From be6f0c1ad702b5416344d02f9fc8fcf98bd5bccf Mon Sep 17 00:00:00 2001 From: Henry Oswald Date: Tue, 4 Nov 2014 12:10:21 +0000 Subject: [PATCH] updated pdf worker --- services/web/public/js/libs/pdf.worker.js | 31255 ++++++++++---------- 1 file changed, 14986 insertions(+), 16269 deletions(-) diff --git a/services/web/public/js/libs/pdf.worker.js b/services/web/public/js/libs/pdf.worker.js index dfb2ea2634..00ff310909 100644 --- a/services/web/public/js/libs/pdf.worker.js +++ b/services/web/public/js/libs/pdf.worker.js @@ -14,14 +14,16 @@ * See the License for the specific language governing permissions and * limitations under the License. */ +/*jshint globalstrict: false */ +/* globals PDFJS */ // Initializing PDFJS global object (if still undefined) if (typeof PDFJS === 'undefined') { (typeof window !== 'undefined' ? window : this).PDFJS = {}; } -PDFJS.version = '0.8.894'; -PDFJS.build = 'ac91047'; +PDFJS.version = '1.0.937'; +PDFJS.build = '308646d'; (function pdfjsWrapper() { // Use strict in our context only - users might not want it @@ -50,7 +52,7 @@ PDFJS.build = 'ac91047'; var globalScope = (typeof window === 'undefined') ? this : window; -var isWorker = (typeof window == 'undefined'); +var isWorker = (typeof window === 'undefined'); var FONT_IDENTITY_MATRIX = [0.001, 0, 0, 0.001, 0, 0]; @@ -67,6 +69,45 @@ var TextRenderingMode = { ADD_TO_PATH_FLAG: 4 }; +var ImageKind = { + GRAYSCALE_1BPP: 1, + RGB_24BPP: 2, + RGBA_32BPP: 3 +}; + +var AnnotationType = { + WIDGET: 1, + TEXT: 2, + LINK: 3 +}; + +var StreamType = { + UNKNOWN: 0, + FLATE: 1, + LZW: 2, + DCT: 3, + JPX: 4, + JBIG: 5, + A85: 6, + AHX: 7, + CCF: 8, + RL: 9 +}; + +var FontType = { + UNKNOWN: 0, + TYPE1: 1, + TYPE1C: 2, + CIDFONTTYPE0: 3, + CIDFONTTYPE0C: 4, + TRUETYPE: 5, + CIDFONTTYPE2: 6, + TYPE3: 7, + OPENTYPE: 8, + TYPE0: 9, + MMTYPE1: 10 +}; + // The global PDFJS object exposes the API // In production, it will be declared outside a global wrapper // In development, it will be declared here @@ -172,7 +213,11 @@ var OPS = PDFJS.OPS = { paintImageMaskXObjectGroup: 84, paintImageXObject: 85, paintInlineImageXObject: 86, - paintInlineImageXObjectGroup: 87 + paintInlineImageXObjectGroup: 87, + paintImageXObjectRepeat: 88, + paintImageMaskXObjectRepeat: 89, + paintSolidColorImageMask: 90, + constructPath: 91 }; // A notice for devs. These are good for things that are helpful to devs, such @@ -218,8 +263,9 @@ function backtrace() { } function assert(cond, msg) { - if (!cond) + if (!cond) { error(msg); + } } var UNSUPPORTED_FEATURES = PDFJS.UNSUPPORTED_FEATURES = { @@ -250,18 +296,25 @@ var UnsupportedManager = PDFJS.UnsupportedManager = // Combines two URLs. The baseUrl shall be absolute URL. If the url is an // absolute URL, it will be returned as is. function combineUrl(baseUrl, url) { - if (!url) + if (!url) { return baseUrl; - if (url.indexOf(':') >= 0) + } + if (/^[a-z][a-z0-9+\-.]*:/i.test(url)) { return url; - if (url.charAt(0) == '/') { + } + var i; + if (url.charAt(0) === '/') { // absolute path - var i = baseUrl.indexOf('://'); - i = baseUrl.indexOf('/', i + 3); + i = baseUrl.indexOf('://'); + if (url.charAt(1) === '/') { + ++i; + } else { + i = baseUrl.indexOf('/', i + 3); + } return baseUrl.substring(0, i) + url; } else { // relative path - var pathLength = baseUrl.length, i; + var pathLength = baseUrl.length; i = baseUrl.lastIndexOf('#'); pathLength = i >= 0 ? i : pathLength; i = baseUrl.lastIndexOf('?', pathLength); @@ -276,11 +329,13 @@ function isValidUrl(url, allowRelative) { if (!url) { return false; } - var colon = url.indexOf(':'); - if (colon < 0) { + // RFC 3986 (http://tools.ietf.org/html/rfc3986#section-3.1) + // scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." ) + var protocol = /^[a-z][a-z0-9+\-.]*(?=:)/i.exec(url); + if (!protocol) { return allowRelative; } - var protocol = url.substr(0, colon); + protocol = protocol[0].toLowerCase(); switch (protocol) { case 'http': case 'https': @@ -293,13 +348,6 @@ function isValidUrl(url, allowRelative) { } PDFJS.isValidUrl = isValidUrl; -// In a well-formed PDF, |cond| holds. If it doesn't, subsequent -// behavior is undefined. -function assertWellFormed(cond, msg) { - if (!cond) - error(msg); -} - function shadow(obj, prop, value) { Object.defineProperty(obj, prop, { value: value, enumerable: true, @@ -325,6 +373,7 @@ var PasswordException = (function PasswordExceptionClosure() { return PasswordException; })(); +PDFJS.PasswordException = PasswordException; var UnknownErrorException = (function UnknownErrorExceptionClosure() { function UnknownErrorException(msg, details) { @@ -338,6 +387,7 @@ var UnknownErrorException = (function UnknownErrorExceptionClosure() { return UnknownErrorException; })(); +PDFJS.UnknownErrorException = UnknownErrorException; var InvalidPDFException = (function InvalidPDFExceptionClosure() { function InvalidPDFException(msg) { @@ -350,6 +400,7 @@ var InvalidPDFException = (function InvalidPDFExceptionClosure() { return InvalidPDFException; })(); +PDFJS.InvalidPDFException = InvalidPDFException; var MissingPDFException = (function MissingPDFExceptionClosure() { function MissingPDFException(msg) { @@ -362,6 +413,22 @@ var MissingPDFException = (function MissingPDFExceptionClosure() { return MissingPDFException; })(); +PDFJS.MissingPDFException = MissingPDFException; + +var UnexpectedResponseException = + (function UnexpectedResponseExceptionClosure() { + function UnexpectedResponseException(msg, status) { + this.name = 'UnexpectedResponseException'; + this.message = msg; + this.status = status; + } + + UnexpectedResponseException.prototype = new Error(); + UnexpectedResponseException.constructor = UnexpectedResponseException; + + return UnexpectedResponseException; +})(); +PDFJS.UnexpectedResponseException = UnexpectedResponseException; var NotImplementedException = (function NotImplementedExceptionClosure() { function NotImplementedException(msg) { @@ -403,33 +470,146 @@ var XRefParseException = (function XRefParseExceptionClosure() { function bytesToString(bytes) { - var str = ''; var length = bytes.length; - for (var n = 0; n < length; ++n) - str += String.fromCharCode(bytes[n]); - return str; + var MAX_ARGUMENT_COUNT = 8192; + if (length < MAX_ARGUMENT_COUNT) { + return String.fromCharCode.apply(null, bytes); + } + var strBuf = []; + for (var i = 0; i < length; i += MAX_ARGUMENT_COUNT) { + var chunkEnd = Math.min(i + MAX_ARGUMENT_COUNT, length); + var chunk = bytes.subarray(i, chunkEnd); + strBuf.push(String.fromCharCode.apply(null, chunk)); + } + return strBuf.join(''); } function stringToBytes(str) { var length = str.length; var bytes = new Uint8Array(length); - for (var n = 0; n < length; ++n) - bytes[n] = str.charCodeAt(n) & 0xFF; + for (var i = 0; i < length; ++i) { + bytes[i] = str.charCodeAt(i) & 0xFF; + } return bytes; } +function string32(value) { + return String.fromCharCode((value >> 24) & 0xff, (value >> 16) & 0xff, + (value >> 8) & 0xff, value & 0xff); +} + +function log2(x) { + var n = 1, i = 0; + while (x > n) { + n <<= 1; + i++; + } + return i; +} + +function readInt8(data, start) { + return (data[start] << 24) >> 24; +} + +function readUint16(data, offset) { + return (data[offset] << 8) | data[offset + 1]; +} + +function readUint32(data, offset) { + return ((data[offset] << 24) | (data[offset + 1] << 16) | + (data[offset + 2] << 8) | data[offset + 3]) >>> 0; +} + +// Lazy test the endianness of the platform +// NOTE: This will be 'true' for simulated TypedArrays +function isLittleEndian() { + var buffer8 = new Uint8Array(2); + buffer8[0] = 1; + var buffer16 = new Uint16Array(buffer8.buffer); + return (buffer16[0] === 1); +} + +Object.defineProperty(PDFJS, 'isLittleEndian', { + configurable: true, + get: function PDFJS_isLittleEndian() { + return shadow(PDFJS, 'isLittleEndian', isLittleEndian()); + } +}); + +//#if !(FIREFOX || MOZCENTRAL || B2G || CHROME) +//// Lazy test if the userAgant support CanvasTypedArrays +function hasCanvasTypedArrays() { + var canvas = document.createElement('canvas'); + canvas.width = canvas.height = 1; + var ctx = canvas.getContext('2d'); + var imageData = ctx.createImageData(1, 1); + return (typeof imageData.data.buffer !== 'undefined'); +} + +Object.defineProperty(PDFJS, 'hasCanvasTypedArrays', { + configurable: true, + get: function PDFJS_hasCanvasTypedArrays() { + return shadow(PDFJS, 'hasCanvasTypedArrays', hasCanvasTypedArrays()); + } +}); + +var Uint32ArrayView = (function Uint32ArrayViewClosure() { + + function Uint32ArrayView(buffer, length) { + this.buffer = buffer; + this.byteLength = buffer.length; + this.length = length === undefined ? (this.byteLength >> 2) : length; + ensureUint32ArrayViewProps(this.length); + } + Uint32ArrayView.prototype = Object.create(null); + + var uint32ArrayViewSetters = 0; + function createUint32ArrayProp(index) { + return { + get: function () { + var buffer = this.buffer, offset = index << 2; + return (buffer[offset] | (buffer[offset + 1] << 8) | + (buffer[offset + 2] << 16) | (buffer[offset + 3] << 24)) >>> 0; + }, + set: function (value) { + var buffer = this.buffer, offset = index << 2; + buffer[offset] = value & 255; + buffer[offset + 1] = (value >> 8) & 255; + buffer[offset + 2] = (value >> 16) & 255; + buffer[offset + 3] = (value >>> 24) & 255; + } + }; + } + + function ensureUint32ArrayViewProps(length) { + while (uint32ArrayViewSetters < length) { + Object.defineProperty(Uint32ArrayView.prototype, + uint32ArrayViewSetters, + createUint32ArrayProp(uint32ArrayViewSetters)); + uint32ArrayViewSetters++; + } + } + + return Uint32ArrayView; +})(); +//#else +//PDFJS.hasCanvasTypedArrays = true; +//#endif + var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0]; var Util = PDFJS.Util = (function UtilClosure() { function Util() {} - Util.makeCssRgb = function Util_makeCssRgb(rgb) { - return 'rgb(' + rgb[0] + ',' + rgb[1] + ',' + rgb[2] + ')'; - }; + var rgbBuf = ['rgb(', 0, ',', 0, ',', 0, ')']; - Util.makeCssCmyk = function Util_makeCssCmyk(cmyk) { - var rgb = ColorSpace.singletons.cmyk.getRgb(cmyk, 0); - return Util.makeCssRgb(rgb); + // makeCssRgb() can be called thousands of times. Using |rgbBuf| avoids + // creating many intermediate strings. + Util.makeCssRgb = function Util_makeCssRgb(rgb) { + rgbBuf[1] = rgb[0]; + rgbBuf[3] = rgb[1]; + rgbBuf[5] = rgb[2]; + return rgbBuf.join(''); }; // Concatenates two transformation matrices together and returns the result. @@ -579,12 +759,11 @@ var Util = PDFJS.Util = (function UtilClosure() { return num < 0 ? -1 : 1; }; - // TODO(mack): Rename appendToArray - Util.concatenateToArray = function concatenateToArray(arr1, arr2) { + Util.appendToArray = function Util_appendToArray(arr1, arr2) { Array.prototype.push.apply(arr1, arr2); }; - Util.prependToArray = function concatenateToArray(arr1, arr2) { + Util.prependToArray = function Util_prependToArray(arr1, arr2) { Array.prototype.unshift.apply(arr1, arr2); }; @@ -631,7 +810,22 @@ var Util = PDFJS.Util = (function UtilClosure() { return Util; })(); +/** + * PDF page viewport created based on scale, rotation and offset. + * @class + * @alias PDFJS.PageViewport + */ var PageViewport = PDFJS.PageViewport = (function PageViewportClosure() { + /** + * @constructor + * @private + * @param viewBox {Array} xMin, yMin, xMax and yMax coordinates. + * @param scale {number} scale of the viewport. + * @param rotation {number} rotations of the viewport in degrees. + * @param offsetX {number} offset X + * @param offsetY {number} offset Y + * @param dontFlip {boolean} if true, axis Y will not be flipped. + */ function PageViewport(viewBox, scale, rotation, offsetX, offsetY, dontFlip) { this.viewBox = viewBox; this.scale = scale; @@ -695,7 +889,14 @@ var PageViewport = PDFJS.PageViewport = (function PageViewportClosure() { this.height = height; this.fontScale = scale; } - PageViewport.prototype = { + PageViewport.prototype = /** @lends PDFJS.PageViewport.prototype */ { + /** + * Clones viewport with additional properties. + * @param args {Object} (optional) If specified, may contain the 'scale' or + * 'rotation' properties to override the corresponding properties in + * the cloned viewport. + * @returns {PDFJS.PageViewport} Cloned viewport. + */ clone: function PageViewPort_clone(args) { args = args || {}; var scale = 'scale' in args ? args.scale : this.scale; @@ -703,15 +904,41 @@ var PageViewport = PDFJS.PageViewport = (function PageViewportClosure() { return new PageViewport(this.viewBox.slice(), scale, rotation, this.offsetX, this.offsetY, args.dontFlip); }, + /** + * Converts PDF point to the viewport coordinates. For examples, useful for + * converting PDF location into canvas pixel coordinates. + * @param x {number} X coordinate. + * @param y {number} Y coordinate. + * @returns {Object} Object that contains 'x' and 'y' properties of the + * point in the viewport coordinate space. + * @see {@link convertToPdfPoint} + * @see {@link convertToViewportRectangle} + */ convertToViewportPoint: function PageViewport_convertToViewportPoint(x, y) { return Util.applyTransform([x, y], this.transform); }, + /** + * Converts PDF rectangle to the viewport coordinates. + * @param rect {Array} xMin, yMin, xMax and yMax coordinates. + * @returns {Array} Contains corresponding coordinates of the rectangle + * in the viewport coordinate space. + * @see {@link convertToViewportPoint} + */ convertToViewportRectangle: function PageViewport_convertToViewportRectangle(rect) { var tl = Util.applyTransform([rect[0], rect[1]], this.transform); var br = Util.applyTransform([rect[2], rect[3]], this.transform); return [tl[0], tl[1], br[0], br[1]]; }, + /** + * Converts viewport coordinates to the PDF location. For examples, useful + * for converting canvas pixel location into PDF one. + * @param x {number} X coordinate. + * @param y {number} Y coordinate. + * @returns {Object} Object that contains 'x' and 'y' properties of the + * point in the PDF coordinate space. + * @see {@link convertToViewportPoint} + */ convertToPdfPoint: function PageViewport_convertToPdfPoint(x, y) { return Util.applyInverseTransform([x, y], this.transform); } @@ -732,19 +959,20 @@ var PDFStringTranslateTable = [ ]; function stringToPDFString(str) { - var i, n = str.length, str2 = ''; + var i, n = str.length, strBuf = []; if (str[0] === '\xFE' && str[1] === '\xFF') { // UTF16BE BOM - for (i = 2; i < n; i += 2) - str2 += String.fromCharCode( - (str.charCodeAt(i) << 8) | str.charCodeAt(i + 1)); + for (i = 2; i < n; i += 2) { + strBuf.push(String.fromCharCode( + (str.charCodeAt(i) << 8) | str.charCodeAt(i + 1))); + } } else { for (i = 0; i < n; ++i) { var code = PDFStringTranslateTable[str.charCodeAt(i)]; - str2 += code ? String.fromCharCode(code) : str.charAt(i); + strBuf.push(code ? String.fromCharCode(code) : str.charAt(i)); } } - return str2; + return strBuf.join(''); } function stringToUTF8String(str) { @@ -759,19 +987,19 @@ function isEmptyObj(obj) { } function isBool(v) { - return typeof v == 'boolean'; + return typeof v === 'boolean'; } function isInt(v) { - return typeof v == 'number' && ((v | 0) == v); + return typeof v === 'number' && ((v | 0) === v); } function isNum(v) { - return typeof v == 'number'; + return typeof v === 'number'; } function isString(v) { - return typeof v == 'string'; + return typeof v === 'string'; } function isNull(v) { @@ -783,7 +1011,7 @@ function isName(v) { } function isCmd(v, cmd) { - return v instanceof Cmd && (!cmd || v.cmd == cmd); + return v instanceof Cmd && (cmd === undefined || v.cmd === cmd); } function isDict(v, type) { @@ -794,7 +1022,7 @@ function isDict(v, type) { return true; } var dictType = v.get('Type'); - return isName(dictType) && dictType.name == type; + return isName(dictType) && dictType.name === type; } function isArray(v) { @@ -802,52 +1030,47 @@ function isArray(v) { } function isStream(v) { - return typeof v == 'object' && v !== null && v !== undefined && - ('getBytes' in v); + return typeof v === 'object' && v !== null && v.getBytes !== undefined; } function isArrayBuffer(v) { - return typeof v == 'object' && v !== null && v !== undefined && - ('byteLength' in v); + return typeof v === 'object' && v !== null && v.byteLength !== undefined; } function isRef(v) { return v instanceof Ref; } -function isPDFFunction(v) { - var fnDict; - if (typeof v != 'object') - return false; - else if (isDict(v)) - fnDict = v; - else if (isStream(v)) - fnDict = v.dict; - else - return false; - return fnDict.has('FunctionType'); -} +/** + * Promise Capability object. + * + * @typedef {Object} PromiseCapability + * @property {Promise} promise - A promise object. + * @property {function} resolve - Fullfills the promise. + * @property {function} reject - Rejects the promise. + */ /** - * Legacy support for PDFJS Promise implementation. - * TODO remove eventually + * Creates a promise capability object. + * @alias PDFJS.createPromiseCapability + * + * @return {PromiseCapability} A capability object contains: + * - a Promise, resolve and reject methods. */ -var LegacyPromise = PDFJS.LegacyPromise = (function LegacyPromiseClosure() { - return function LegacyPromise() { - var resolve, reject; - var promise = new Promise(function (resolve_, reject_) { - resolve = resolve_; - reject = reject_; - }); - promise.resolve = resolve; - promise.reject = reject; - return promise; - }; -})(); +function createPromiseCapability() { + var capability = {}; + capability.promise = new Promise(function (resolve, reject) { + capability.resolve = resolve; + capability.reject = reject; + }); + return capability; +} + +PDFJS.createPromiseCapability = createPromiseCapability; /** * Polyfill for Promises: - * The following promise implementation tries to generally implment the + * The following promise implementation tries to generally implement the * Promise/A+ spec. Some notable differences from other promise libaries are: * - There currently isn't a seperate deferred and promise object. * - Unhandled rejections eventually show an error if they aren't handled. @@ -882,8 +1105,20 @@ var LegacyPromise = PDFJS.LegacyPromise = (function LegacyPromiseClosure() { }; } if (typeof globalScope.Promise.resolve !== 'function') { - globalScope.Promise.resolve = function (x) { - return new globalScope.Promise(function (resolve) { resolve(x); }); + globalScope.Promise.resolve = function (value) { + return new globalScope.Promise(function (resolve) { resolve(value); }); + }; + } + if (typeof globalScope.Promise.reject !== 'function') { + globalScope.Promise.reject = function (reason) { + return new globalScope.Promise(function (resolve, reject) { + reject(reason); + }); + }; + } + if (typeof globalScope.Promise.prototype.catch !== 'function') { + globalScope.Promise.prototype.catch = function (onReject) { + return globalScope.Promise.prototype.then(undefined, onReject); }; } return; @@ -905,7 +1140,7 @@ var LegacyPromise = PDFJS.LegacyPromise = (function LegacyPromiseClosure() { pendingRejectionCheck: false, scheduleHandlers: function scheduleHandlers(promise) { - if (promise._status == STATUS_PENDING) { + if (promise._status === STATUS_PENDING) { return; } @@ -931,10 +1166,10 @@ var LegacyPromise = PDFJS.LegacyPromise = (function LegacyPromiseClosure() { try { if (nextStatus === STATUS_RESOLVED) { - if (typeof(handler.onResolve) == 'function') { + if (typeof handler.onResolve === 'function') { nextValue = handler.onResolve(nextValue); } - } else if (typeof(handler.onReject) === 'function') { + } else if (typeof handler.onReject === 'function') { nextValue = handler.onReject(nextValue); nextStatus = STATUS_RESOLVED; @@ -1009,7 +1244,11 @@ var LegacyPromise = PDFJS.LegacyPromise = (function LegacyPromiseClosure() { function Promise(resolver) { this._status = STATUS_PENDING; this._handlers = []; - resolver.call(this, this._resolve.bind(this), this._reject.bind(this)); + try { + resolver.call(this, this._resolve.bind(this), this._reject.bind(this)); + } catch (e) { + this._reject(e); + } } /** * Builds a promise that is resolved when all the passed in promises are @@ -1045,8 +1284,9 @@ var LegacyPromise = PDFJS.LegacyPromise = (function LegacyPromiseClosure() { } results[i] = value; unresolved--; - if (unresolved === 0) + if (unresolved === 0) { resolveAll(results); + } }; })(i); if (Promise.isPromise(promise)) { @@ -1060,18 +1300,28 @@ var LegacyPromise = PDFJS.LegacyPromise = (function LegacyPromiseClosure() { /** * Checks if the value is likely a promise (has a 'then' function). - * @return {boolean} true if x is thenable + * @return {boolean} true if value is thenable */ Promise.isPromise = function Promise_isPromise(value) { return value && typeof value.then === 'function'; }; + /** * Creates resolved promise - * @param x resolve value + * @param value resolve value * @returns {Promise} */ - Promise.resolve = function Promise_resolve(x) { - return new Promise(function (resolve) { resolve(x); }); + Promise.resolve = function Promise_resolve(value) { + return new Promise(function (resolve) { resolve(value); }); + }; + + /** + * Creates rejected promise + * @param reason rejection value + * @returns {Promise} + */ + Promise.reject = function Promise_reject(reason) { + return new Promise(function (resolve, reject) { reject(reason); }); }; Promise.prototype = { @@ -1086,7 +1336,7 @@ var LegacyPromise = PDFJS.LegacyPromise = (function LegacyPromiseClosure() { return; } - if (status == STATUS_RESOLVED && + if (status === STATUS_RESOLVED && Promise.isPromise(value)) { value.then(this._updateStatus.bind(this, STATUS_RESOLVED), this._updateStatus.bind(this, STATUS_REJECTED)); @@ -1114,7 +1364,7 @@ var LegacyPromise = PDFJS.LegacyPromise = (function LegacyPromiseClosure() { then: function Promise_then(onResolve, onReject) { var nextPromise = new Promise(function (resolve, reject) { - this.resolve = reject; + this.resolve = resolve; this.reject = reject; }); this._handlers.push({ @@ -1125,6 +1375,10 @@ var LegacyPromise = PDFJS.LegacyPromise = (function LegacyPromiseClosure() { }); HandlerManager.scheduleHandlers(this); return nextPromise; + }, + + catch: function Promise_catch(onReject) { + return this.then(undefined, onReject); } }; @@ -1136,8 +1390,9 @@ var LegacyPromise = PDFJS.LegacyPromise = (function LegacyPromiseClosure() { var StatTimer = (function StatTimerClosure() { function rpad(str, pad, length) { - while (str.length < length) + while (str.length < length) { str += pad; + } return str; } function StatTimer() { @@ -1147,17 +1402,21 @@ var StatTimer = (function StatTimerClosure() { } StatTimer.prototype = { time: function StatTimer_time(name) { - if (!this.enabled) + if (!this.enabled) { return; - if (name in this.started) + } + if (name in this.started) { warn('Timer is already running for ' + name); + } this.started[name] = Date.now(); }, timeEnd: function StatTimer_timeEnd(name) { - if (!this.enabled) + if (!this.enabled) { return; - if (!(name in this.started)) + } + if (!(name in this.started)) { warn('Timer has not been started for ' + name); + } this.times.push({ 'name': name, 'start': this.started[name], @@ -1167,16 +1426,18 @@ var StatTimer = (function StatTimerClosure() { delete this.started[name]; }, toString: function StatTimer_toString() { + var i, ii; var times = this.times; var out = ''; // Find the longest name for padding purposes. var longest = 0; - for (var i = 0, ii = times.length; i < ii; ++i) { + for (i = 0, ii = times.length; i < ii; ++i) { var name = times[i]['name']; - if (name.length > longest) + if (name.length > longest) { longest = name.length; + } } - for (var i = 0, ii = times.length; i < ii; ++i) { + for (i = 0, ii = times.length; i < ii; ++i) { var span = times[i]; var duration = span.end - span.start; out += rpad(span['name'], ' ', longest) + ' ' + duration + 'ms\n'; @@ -1188,8 +1449,9 @@ var StatTimer = (function StatTimerClosure() { })(); PDFJS.createBlob = function createBlob(data, contentType) { - if (typeof Blob !== 'undefined') + if (typeof Blob !== 'undefined') { return new Blob([data], { type: contentType }); + } // Blob builder is deprecated in FF14 and removed in FF18. var bb = new MozBlobBuilder(); bb.append(data); @@ -1227,7 +1489,7 @@ function MessageHandler(name, comObj) { this.comObj = comObj; this.callbackIndex = 1; this.postMessageTransfers = true; - var callbacks = this.callbacks = {}; + var callbacksCapabilities = this.callbacksCapabilities = {}; var ah = this.actionHandler = {}; ah['console_log'] = [function ahConsoleLog(data) { @@ -1244,35 +1506,40 @@ function MessageHandler(name, comObj) { var data = event.data; if (data.isReply) { var callbackId = data.callbackId; - if (data.callbackId in callbacks) { - var callback = callbacks[callbackId]; - delete callbacks[callbackId]; - callback(data.data); + if (data.callbackId in callbacksCapabilities) { + var callback = callbacksCapabilities[callbackId]; + delete callbacksCapabilities[callbackId]; + if ('error' in data) { + callback.reject(data.error); + } else { + callback.resolve(data.data); + } } else { error('Cannot resolve callback ' + callbackId); } } else if (data.action in ah) { var action = ah[data.action]; if (data.callbackId) { - var deferred = {}; - var promise = new Promise(function (resolve, reject) { - deferred.resolve = resolve; - deferred.reject = reject; - }); - deferred.promise = promise; - promise.then(function(resolvedData) { + Promise.resolve().then(function () { + return action[0].call(action[1], data.data); + }).then(function (result) { comObj.postMessage({ isReply: true, callbackId: data.callbackId, - data: resolvedData + data: result + }); + }, function (reason) { + comObj.postMessage({ + isReply: true, + callbackId: data.callbackId, + error: reason }); }); - action[0].call(action[1], data.data, deferred); } else { action[0].call(action[1], data.data); } } else { - error('Unkown action from worker: ' + data.action); + error('Unknown action from worker: ' + data.action); } }; } @@ -1289,19 +1556,47 @@ MessageHandler.prototype = { * Sends a message to the comObj to invoke the action with the supplied data. * @param {String} actionName Action to call. * @param {JSON} data JSON data to send. - * @param {function} [callback] Optional callback that will handle a reply. * @param {Array} [transfers] Optional list of transfers/ArrayBuffers */ - send: function messageHandlerSend(actionName, data, callback, transfers) { + send: function messageHandlerSend(actionName, data, transfers) { var message = { action: actionName, data: data }; - if (callback) { - var callbackId = this.callbackIndex++; - this.callbacks[callbackId] = callback; - message.callbackId = callbackId; + this.postMessage(message, transfers); + }, + /** + * Sends a message to the comObj to invoke the action with the supplied data. + * Expects that other side will callback with the response. + * @param {String} actionName Action to call. + * @param {JSON} data JSON data to send. + * @param {Array} [transfers] Optional list of transfers/ArrayBuffers. + * @returns {Promise} Promise to be resolved with response data. + */ + sendWithPromise: + function messageHandlerSendWithPromise(actionName, data, transfers) { + var callbackId = this.callbackIndex++; + var message = { + action: actionName, + data: data, + callbackId: callbackId + }; + var capability = createPromiseCapability(); + this.callbacksCapabilities[callbackId] = capability; + try { + this.postMessage(message, transfers); + } catch (e) { + capability.reject(e); } + return capability.promise; + }, + /** + * Sends raw message to the comObj. + * @private + * @param message {Object} Raw message. + * @param transfers List of transfers/ArrayBuffers, or undefined. + */ + postMessage: function (message, transfers) { if (transfers && this.postMessageTransfers) { this.comObj.postMessage(message, transfers); } else { @@ -1315,2856 +1610,14 @@ function loadJpegStream(id, imageUrl, objs) { img.onload = (function loadJpegStream_onloadClosure() { objs.resolve(id, img); }); + img.onerror = (function loadJpegStream_onerrorClosure() { + objs.resolve(id, null); + warn('Error during JPEG image loading'); + }); img.src = imageUrl; } -var ColorSpace = (function ColorSpaceClosure() { - // Constructor should define this.numComps, this.defaultColor, this.name - function ColorSpace() { - error('should not call ColorSpace constructor'); - } - - ColorSpace.prototype = { - /** - * Converts the color value to the RGB color. The color components are - * located in the src array starting from the srcOffset. Returns the array - * of the rgb components, each value ranging from [0,255]. - */ - getRgb: function ColorSpace_getRgb(src, srcOffset) { - error('Should not call ColorSpace.getRgb'); - }, - /** - * Converts the color value to the RGB color, similar to the getRgb method. - * The result placed into the dest array starting from the destOffset. - */ - getRgbItem: function ColorSpace_getRgb(src, srcOffset, dest, destOffset) { - error('Should not call ColorSpace.getRgbItem'); - }, - /** - * Converts the specified number of the color values to the RGB colors. - * The colors are located in the src array starting from the srcOffset. - * The result is placed into the dest array starting from the destOffset. - * The src array items shall be in [0,2^bits) range, the dest array items - * will be in [0,255] range. - */ - getRgbBuffer: function ColorSpace_getRgbBuffer(src, srcOffset, count, - dest, destOffset, bits) { - error('Should not call ColorSpace.getRgbBuffer'); - }, - /** - * Determines amount of the bytes is required to store the reslut of the - * conversion that done by the getRgbBuffer method. - */ - getOutputLength: function ColorSpace_getOutputLength(inputLength) { - error('Should not call ColorSpace.getOutputLength'); - }, - /** - * Returns true if source data will be equal the result/output data. - */ - isPassthrough: function ColorSpace_isPassthrough(bits) { - return false; - }, - /** - * Creates the output buffer and converts the specified number of the color - * values to the RGB colors, similar to the getRgbBuffer. - */ - createRgbBuffer: function ColorSpace_createRgbBuffer(src, srcOffset, - count, bits) { - if (this.isPassthrough(bits)) { - return src.subarray(srcOffset); - } - var dest = new Uint8Array(count * 3); - var numComponentColors = 1 << bits; - // Optimization: create a color map when there is just one component and - // we are converting more colors than the size of the color map. We - // don't build the map if the colorspace is gray or rgb since those - // methods are faster than building a map. This mainly offers big speed - // ups for indexed and alternate colorspaces. - if (this.numComps === 1 && count > numComponentColors && - this.name !== 'DeviceGray' && this.name !== 'DeviceRGB') { - // TODO it may be worth while to cache the color map. While running - // testing I never hit a cache so I will leave that out for now (perhaps - // we are reparsing colorspaces too much?). - var allColors = bits <= 8 ? new Uint8Array(numComponentColors) : - new Uint16Array(numComponentColors); - for (var i = 0; i < numComponentColors; i++) { - allColors[i] = i; - } - var colorMap = new Uint8Array(numComponentColors * 3); - this.getRgbBuffer(allColors, 0, numComponentColors, colorMap, 0, bits); - - var destOffset = 0; - for (var i = 0; i < count; ++i) { - var key = src[srcOffset++] * 3; - dest[destOffset++] = colorMap[key]; - dest[destOffset++] = colorMap[key + 1]; - dest[destOffset++] = colorMap[key + 2]; - } - return dest; - } - this.getRgbBuffer(src, srcOffset, count, dest, 0, bits); - return dest; - }, - /** - * True if the colorspace has components in the default range of [0, 1]. - * This should be true for all colorspaces except for lab color spaces - * which are [0,100], [-128, 127], [-128, 127]. - */ - usesZeroToOneRange: true - }; - - ColorSpace.parse = function ColorSpace_parse(cs, xref, res) { - var IR = ColorSpace.parseToIR(cs, xref, res); - if (IR instanceof AlternateCS) - return IR; - - return ColorSpace.fromIR(IR); - }; - - ColorSpace.fromIR = function ColorSpace_fromIR(IR) { - var name = isArray(IR) ? IR[0] : IR; - - switch (name) { - case 'DeviceGrayCS': - return this.singletons.gray; - case 'DeviceRgbCS': - return this.singletons.rgb; - case 'DeviceCmykCS': - return this.singletons.cmyk; - case 'CalGrayCS': - var whitePoint = IR[1].WhitePoint; - var blackPoint = IR[1].BlackPoint; - var gamma = IR[1].Gamma; - return new CalGrayCS(whitePoint, blackPoint, gamma); - case 'PatternCS': - var basePatternCS = IR[1]; - if (basePatternCS) - basePatternCS = ColorSpace.fromIR(basePatternCS); - return new PatternCS(basePatternCS); - case 'IndexedCS': - var baseIndexedCS = IR[1]; - var hiVal = IR[2]; - var lookup = IR[3]; - return new IndexedCS(ColorSpace.fromIR(baseIndexedCS), hiVal, lookup); - case 'AlternateCS': - var numComps = IR[1]; - var alt = IR[2]; - var tintFnIR = IR[3]; - - return new AlternateCS(numComps, ColorSpace.fromIR(alt), - PDFFunction.fromIR(tintFnIR)); - case 'LabCS': - var whitePoint = IR[1].WhitePoint; - var blackPoint = IR[1].BlackPoint; - var range = IR[1].Range; - return new LabCS(whitePoint, blackPoint, range); - default: - error('Unkown name ' + name); - } - return null; - }; - - ColorSpace.parseToIR = function ColorSpace_parseToIR(cs, xref, res) { - if (isName(cs)) { - var colorSpaces = res.get('ColorSpace'); - if (isDict(colorSpaces)) { - var refcs = colorSpaces.get(cs.name); - if (refcs) - cs = refcs; - } - } - - cs = xref.fetchIfRef(cs); - var mode; - - if (isName(cs)) { - mode = cs.name; - this.mode = mode; - - switch (mode) { - case 'DeviceGray': - case 'G': - return 'DeviceGrayCS'; - case 'DeviceRGB': - case 'RGB': - return 'DeviceRgbCS'; - case 'DeviceCMYK': - case 'CMYK': - return 'DeviceCmykCS'; - case 'Pattern': - return ['PatternCS', null]; - default: - error('unrecognized colorspace ' + mode); - } - } else if (isArray(cs)) { - mode = cs[0].name; - this.mode = mode; - - switch (mode) { - case 'DeviceGray': - case 'G': - return 'DeviceGrayCS'; - case 'DeviceRGB': - case 'RGB': - return 'DeviceRgbCS'; - case 'DeviceCMYK': - case 'CMYK': - return 'DeviceCmykCS'; - case 'CalGray': - var params = cs[1].getAll(); - return ['CalGrayCS', params]; - case 'CalRGB': - return 'DeviceRgbCS'; - case 'ICCBased': - var stream = xref.fetchIfRef(cs[1]); - var dict = stream.dict; - var numComps = dict.get('N'); - if (numComps == 1) - return 'DeviceGrayCS'; - if (numComps == 3) - return 'DeviceRgbCS'; - if (numComps == 4) - return 'DeviceCmykCS'; - break; - case 'Pattern': - var basePatternCS = cs[1]; - if (basePatternCS) - basePatternCS = ColorSpace.parseToIR(basePatternCS, xref, res); - return ['PatternCS', basePatternCS]; - case 'Indexed': - case 'I': - var baseIndexedCS = ColorSpace.parseToIR(cs[1], xref, res); - var hiVal = cs[2] + 1; - var lookup = xref.fetchIfRef(cs[3]); - if (isStream(lookup)) { - lookup = lookup.getBytes(); - } - return ['IndexedCS', baseIndexedCS, hiVal, lookup]; - case 'Separation': - case 'DeviceN': - var name = cs[1]; - var numComps = 1; - if (isName(name)) - numComps = 1; - else if (isArray(name)) - numComps = name.length; - var alt = ColorSpace.parseToIR(cs[2], xref, res); - var tintFnIR = PDFFunction.getIR(xref, xref.fetchIfRef(cs[3])); - return ['AlternateCS', numComps, alt, tintFnIR]; - case 'Lab': - var params = cs[1].getAll(); - return ['LabCS', params]; - default: - error('unimplemented color space object "' + mode + '"'); - } - } else { - error('unrecognized color space object: "' + cs + '"'); - } - return null; - }; - /** - * Checks if a decode map matches the default decode map for a color space. - * This handles the general decode maps where there are two values per - * component. e.g. [0, 1, 0, 1, 0, 1] for a RGB color. - * This does not handle Lab, Indexed, or Pattern decode maps since they are - * slightly different. - * @param {Array} decode Decode map (usually from an image). - * @param {Number} n Number of components the color space has. - */ - ColorSpace.isDefaultDecode = function ColorSpace_isDefaultDecode(decode, n) { - if (!decode) - return true; - - if (n * 2 !== decode.length) { - warn('The decode map is not the correct length'); - return true; - } - for (var i = 0, ii = decode.length; i < ii; i += 2) { - if (decode[i] !== 0 || decode[i + 1] != 1) - return false; - } - return true; - }; - - ColorSpace.singletons = { - get gray() { - return shadow(this, 'gray', new DeviceGrayCS()); - }, - get rgb() { - return shadow(this, 'rgb', new DeviceRgbCS()); - }, - get cmyk() { - return shadow(this, 'cmyk', new DeviceCmykCS()); - } - }; - - return ColorSpace; -})(); - -/** - * Alternate color space handles both Separation and DeviceN color spaces. A - * Separation color space is actually just a DeviceN with one color component. - * Both color spaces use a tinting function to convert colors to a base color - * space. - */ -var AlternateCS = (function AlternateCSClosure() { - function AlternateCS(numComps, base, tintFn) { - this.name = 'Alternate'; - this.numComps = numComps; - this.defaultColor = new Float32Array(numComps); - for (var i = 0; i < numComps; ++i) { - this.defaultColor[i] = 1; - } - this.base = base; - this.tintFn = tintFn; - } - - AlternateCS.prototype = { - getRgb: function AlternateCS_getRgb(src, srcOffset) { - var rgb = new Uint8Array(3); - this.getRgbItem(src, srcOffset, rgb, 0); - return rgb; - }, - getRgbItem: function AlternateCS_getRgbItem(src, srcOffset, - dest, destOffset) { - var baseNumComps = this.base.numComps; - var input = 'subarray' in src ? - src.subarray(srcOffset, srcOffset + this.numComps) : - Array.prototype.slice.call(src, srcOffset, srcOffset + this.numComps); - var tinted = this.tintFn(input); - this.base.getRgbItem(tinted, 0, dest, destOffset); - }, - getRgbBuffer: function AlternateCS_getRgbBuffer(src, srcOffset, count, - dest, destOffset, bits) { - var tintFn = this.tintFn; - var base = this.base; - var scale = 1 / ((1 << bits) - 1); - var baseNumComps = base.numComps; - var usesZeroToOneRange = base.usesZeroToOneRange; - var isPassthrough = base.isPassthrough(8) || !usesZeroToOneRange; - var pos = isPassthrough ? destOffset : 0; - var baseBuf = isPassthrough ? dest : new Uint8Array(baseNumComps * count); - var numComps = this.numComps; - - var scaled = new Float32Array(numComps); - for (var i = 0; i < count; i++) { - for (var j = 0; j < numComps; j++) { - scaled[j] = src[srcOffset++] * scale; - } - var tinted = tintFn(scaled); - if (usesZeroToOneRange) { - for (var j = 0; j < baseNumComps; j++) { - baseBuf[pos++] = tinted[j] * 255; - } - } else { - base.getRgbItem(tinted, 0, baseBuf, pos); - pos += baseNumComps; - } - } - if (!isPassthrough) { - base.getRgbBuffer(baseBuf, 0, count, dest, destOffset, 8); - } - }, - getOutputLength: function AlternateCS_getOutputLength(inputLength) { - return this.base.getOutputLength(inputLength * - this.base.numComps / this.numComps); - }, - isPassthrough: ColorSpace.prototype.isPassthrough, - createRgbBuffer: ColorSpace.prototype.createRgbBuffer, - isDefaultDecode: function AlternateCS_isDefaultDecode(decodeMap) { - return ColorSpace.isDefaultDecode(decodeMap, this.numComps); - }, - usesZeroToOneRange: true - }; - - return AlternateCS; -})(); - -var PatternCS = (function PatternCSClosure() { - function PatternCS(baseCS) { - this.name = 'Pattern'; - this.base = baseCS; - } - PatternCS.prototype = {}; - - return PatternCS; -})(); - -var IndexedCS = (function IndexedCSClosure() { - function IndexedCS(base, highVal, lookup) { - this.name = 'Indexed'; - this.numComps = 1; - this.defaultColor = new Uint8Array([0]); - this.base = base; - this.highVal = highVal; - - var baseNumComps = base.numComps; - var length = baseNumComps * highVal; - var lookupArray; - - if (isStream(lookup)) { - lookupArray = new Uint8Array(length); - var bytes = lookup.getBytes(length); - lookupArray.set(bytes); - } else if (isString(lookup)) { - lookupArray = new Uint8Array(length); - for (var i = 0; i < length; ++i) - lookupArray[i] = lookup.charCodeAt(i); - } else if (lookup instanceof Uint8Array || lookup instanceof Array) { - lookupArray = lookup; - } else { - error('Unrecognized lookup table: ' + lookup); - } - this.lookup = lookupArray; - } - - IndexedCS.prototype = { - getRgb: function IndexedCS_getRgb(src, srcOffset) { - var numComps = this.base.numComps; - var start = src[srcOffset] * numComps; - return this.base.getRgb(this.lookup, start); - }, - getRgbItem: function IndexedCS_getRgbItem(src, srcOffset, - dest, destOffset) { - var numComps = this.base.numComps; - var start = src[srcOffset] * numComps; - this.base.getRgbItem(this.lookup, start, dest, destOffset); - }, - getRgbBuffer: function IndexedCS_getRgbBuffer(src, srcOffset, count, - dest, destOffset) { - var base = this.base; - var numComps = base.numComps; - var outputDelta = base.getOutputLength(numComps); - var lookup = this.lookup; - - for (var i = 0; i < count; ++i) { - var lookupPos = src[srcOffset++] * numComps; - base.getRgbBuffer(lookup, lookupPos, 1, dest, destOffset, 8); - destOffset += outputDelta; - } - }, - getOutputLength: function IndexedCS_getOutputLength(inputLength) { - return this.base.getOutputLength(inputLength * this.base.numComps); - }, - isPassthrough: ColorSpace.prototype.isPassthrough, - createRgbBuffer: ColorSpace.prototype.createRgbBuffer, - isDefaultDecode: function IndexedCS_isDefaultDecode(decodeMap) { - // indexed color maps shouldn't be changed - return true; - }, - usesZeroToOneRange: true - }; - return IndexedCS; -})(); - -var DeviceGrayCS = (function DeviceGrayCSClosure() { - function DeviceGrayCS() { - this.name = 'DeviceGray'; - this.numComps = 1; - this.defaultColor = new Float32Array([0]); - } - - DeviceGrayCS.prototype = { - getRgb: function DeviceGrayCS_getRgb(src, srcOffset) { - var rgb = new Uint8Array(3); - this.getRgbItem(src, srcOffset, rgb, 0); - return rgb; - }, - getRgbItem: function DeviceGrayCS_getRgbItem(src, srcOffset, - dest, destOffset) { - var c = (src[srcOffset] * 255) | 0; - c = c < 0 ? 0 : c > 255 ? 255 : c; - dest[destOffset] = dest[destOffset + 1] = dest[destOffset + 2] = c; - }, - getRgbBuffer: function DeviceGrayCS_getRgbBuffer(src, srcOffset, count, - dest, destOffset, bits) { - var scale = 255 / ((1 << bits) - 1); - var j = srcOffset, q = destOffset; - for (var i = 0; i < count; ++i) { - var c = (scale * src[j++]) | 0; - dest[q++] = c; - dest[q++] = c; - dest[q++] = c; - } - }, - getOutputLength: function DeviceGrayCS_getOutputLength(inputLength) { - return inputLength * 3; - }, - isPassthrough: ColorSpace.prototype.isPassthrough, - createRgbBuffer: ColorSpace.prototype.createRgbBuffer, - isDefaultDecode: function DeviceGrayCS_isDefaultDecode(decodeMap) { - return ColorSpace.isDefaultDecode(decodeMap, this.numComps); - }, - usesZeroToOneRange: true - }; - return DeviceGrayCS; -})(); - -var DeviceRgbCS = (function DeviceRgbCSClosure() { - function DeviceRgbCS() { - this.name = 'DeviceRGB'; - this.numComps = 3; - this.defaultColor = new Float32Array([0, 0, 0]); - } - DeviceRgbCS.prototype = { - getRgb: function DeviceRgbCS_getRgb(src, srcOffset) { - var rgb = new Uint8Array(3); - this.getRgbItem(src, srcOffset, rgb, 0); - return rgb; - }, - getRgbItem: function DeviceRgbCS_getRgbItem(src, srcOffset, - dest, destOffset) { - var r = (src[srcOffset] * 255) | 0; - var g = (src[srcOffset + 1] * 255) | 0; - var b = (src[srcOffset + 2] * 255) | 0; - dest[destOffset] = r < 0 ? 0 : r > 255 ? 255 : r; - dest[destOffset + 1] = g < 0 ? 0 : g > 255 ? 255 : g; - dest[destOffset + 2] = b < 0 ? 0 : b > 255 ? 255 : b; - }, - getRgbBuffer: function DeviceRgbCS_getRgbBuffer(src, srcOffset, count, - dest, destOffset, bits) { - var length = count * 3; - if (bits == 8) { - dest.set(src.subarray(srcOffset, srcOffset + length), destOffset); - return; - } - var scale = 255 / ((1 << bits) - 1); - var j = srcOffset, q = destOffset; - for (var i = 0; i < length; ++i) { - dest[q++] = (scale * src[j++]) | 0; - } - }, - getOutputLength: function DeviceRgbCS_getOutputLength(inputLength) { - return inputLength; - }, - isPassthrough: function DeviceRgbCS_isPassthrough(bits) { - return bits == 8; - }, - createRgbBuffer: ColorSpace.prototype.createRgbBuffer, - isDefaultDecode: function DeviceRgbCS_isDefaultDecode(decodeMap) { - return ColorSpace.isDefaultDecode(decodeMap, this.numComps); - }, - usesZeroToOneRange: true - }; - return DeviceRgbCS; -})(); - -var DeviceCmykCS = (function DeviceCmykCSClosure() { - // The coefficients below was found using numerical analysis: the method of - // steepest descent for the sum((f_i - color_value_i)^2) for r/g/b colors, - // where color_value is the tabular value from the table of sampled RGB colors - // from CMYK US Web Coated (SWOP) colorspace, and f_i is the corresponding - // CMYK color conversion using the estimation below: - // f(A, B,.. N) = Acc+Bcm+Ccy+Dck+c+Fmm+Gmy+Hmk+Im+Jyy+Kyk+Ly+Mkk+Nk+255 - function convertToRgb(src, srcOffset, srcScale, dest, destOffset) { - var c = src[srcOffset + 0] * srcScale; - var m = src[srcOffset + 1] * srcScale; - var y = src[srcOffset + 2] * srcScale; - var k = src[srcOffset + 3] * srcScale; - - var r = - c * (-4.387332384609988 * c + 54.48615194189176 * m + - 18.82290502165302 * y + 212.25662451639585 * k + - -285.2331026137004) + - m * (1.7149763477362134 * m - 5.6096736904047315 * y + - -17.873870861415444 * k - 5.497006427196366) + - y * (-2.5217340131683033 * y - 21.248923337353073 * k + - 17.5119270841813) + - k * (-21.86122147463605 * k - 189.48180835922747) + 255; - var g = - c * (8.841041422036149 * c + 60.118027045597366 * m + - 6.871425592049007 * y + 31.159100130055922 * k + - -79.2970844816548) + - m * (-15.310361306967817 * m + 17.575251261109482 * y + - 131.35250912493976 * k - 190.9453302588951) + - y * (4.444339102852739 * y + 9.8632861493405 * k - 24.86741582555878) + - k * (-20.737325471181034 * k - 187.80453709719578) + 255; - var b = - c * (0.8842522430003296 * c + 8.078677503112928 * m + - 30.89978309703729 * y - 0.23883238689178934 * k + - -14.183576799673286) + - m * (10.49593273432072 * m + 63.02378494754052 * y + - 50.606957656360734 * k - 112.23884253719248) + - y * (0.03296041114873217 * y + 115.60384449646641 * k + - -193.58209356861505) + - k * (-22.33816807309886 * k - 180.12613974708367) + 255; - - dest[destOffset] = r > 255 ? 255 : r < 0 ? 0 : r; - dest[destOffset + 1] = g > 255 ? 255 : g < 0 ? 0 : g; - dest[destOffset + 2] = b > 255 ? 255 : b < 0 ? 0 : b; - } - - function DeviceCmykCS() { - this.name = 'DeviceCMYK'; - this.numComps = 4; - this.defaultColor = new Float32Array([0, 0, 0, 1]); - } - DeviceCmykCS.prototype = { - getRgb: function DeviceCmykCS_getRgb(src, srcOffset) { - var rgb = new Uint8Array(3); - convertToRgb(src, srcOffset, 1, rgb, 0); - return rgb; - }, - getRgbItem: function DeviceCmykCS_getRgbItem(src, srcOffset, - dest, destOffset) { - convertToRgb(src, srcOffset, 1, dest, destOffset); - }, - getRgbBuffer: function DeviceCmykCS_getRgbBuffer(src, srcOffset, count, - dest, destOffset, bits) { - var scale = 1 / ((1 << bits) - 1); - for (var i = 0; i < count; i++) { - convertToRgb(src, srcOffset, scale, dest, destOffset); - srcOffset += 4; - destOffset += 3; - } - }, - getOutputLength: function DeviceCmykCS_getOutputLength(inputLength) { - return (inputLength >> 2) * 3; - }, - isPassthrough: ColorSpace.prototype.isPassthrough, - createRgbBuffer: ColorSpace.prototype.createRgbBuffer, - isDefaultDecode: function DeviceCmykCS_isDefaultDecode(decodeMap) { - return ColorSpace.isDefaultDecode(decodeMap, this.numComps); - }, - usesZeroToOneRange: true - }; - - return DeviceCmykCS; -})(); - -// -// CalGrayCS: Based on "PDF Reference, Sixth Ed", p.245 -// -var CalGrayCS = (function CalGrayCSClosure() { - function CalGrayCS(whitePoint, blackPoint, gamma) { - this.name = 'CalGray'; - this.numComps = 1; - this.defaultColor = new Float32Array([0]); - - if (!whitePoint) { - error('WhitePoint missing - required for color space CalGray'); - } - blackPoint = blackPoint || [0, 0, 0]; - gamma = gamma || 1; - - // Translate arguments to spec variables. - this.XW = whitePoint[0]; - this.YW = whitePoint[1]; - this.ZW = whitePoint[2]; - - this.XB = blackPoint[0]; - this.YB = blackPoint[1]; - this.ZB = blackPoint[2]; - - this.G = gamma; - - // Validate variables as per spec. - if (this.XW < 0 || this.ZW < 0 || this.YW !== 1) { - error('Invalid WhitePoint components for ' + this.name + - ', no fallback available'); - } - - if (this.XB < 0 || this.YB < 0 || this.ZB < 0) { - info('Invalid BlackPoint for ' + this.name + ', falling back to default'); - this.XB = this.YB = this.ZB = 0; - } - - if (this.XB !== 0 || this.YB !== 0 || this.ZB !== 0) { - warn(this.name + ', BlackPoint: XB: ' + this.XB + ', YB: ' + this.YB + - ', ZB: ' + this.ZB + ', only default values are supported.'); - } - - if (this.G < 1) { - info('Invalid Gamma: ' + this.G + ' for ' + this.name + - ', falling back to default'); - this.G = 1; - } - } - - function convertToRgb(cs, src, srcOffset, dest, destOffset, scale) { - // A represents a gray component of a calibrated gray space. - // A <---> AG in the spec - var A = src[srcOffset] * scale; - var AG = Math.pow(A, cs.G); - - // Computes intermediate variables M, L, N as per spec. - // Except if other than default BlackPoint values are used. - var M = cs.XW * AG; - var L = cs.YW * AG; - var N = cs.ZW * AG; - - // Decode XYZ, as per spec. - var X = M; - var Y = L; - var Z = N; - - // http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html, Ch 4. - // This yields values in range [0, 100]. - var Lstar = Math.max(116 * Math.pow(Y, 1 / 3) - 16, 0); - - // Convert values to rgb range [0, 255]. - dest[destOffset] = Lstar * 255 / 100; - dest[destOffset + 1] = Lstar * 255 / 100; - dest[destOffset + 2] = Lstar * 255 / 100; - } - - CalGrayCS.prototype = { - getRgb: function CalGrayCS_getRgb(src, srcOffset) { - var rgb = new Uint8Array(3); - this.getRgbItem(src, srcOffset, rgb, 0); - return rgb; - }, - getRgbItem: function CalGrayCS_getRgbItem(src, srcOffset, - dest, destOffset) { - convertToRgb(this, src, srcOffset, dest, destOffset, 1); - }, - getRgbBuffer: function CalGrayCS_getRgbBuffer(src, srcOffset, count, - dest, destOffset, bits) { - var scale = 1 / ((1 << bits) - 1); - - for (var i = 0; i < count; ++i) { - convertToRgb(this, src, srcOffset, dest, destOffset, scale); - srcOffset += 1; - destOffset += 3; - } - }, - getOutputLength: function CalGrayCS_getOutputLength(inputLength) { - return inputLength * 3; - }, - isPassthrough: ColorSpace.prototype.isPassthrough, - createRgbBuffer: ColorSpace.prototype.createRgbBuffer, - isDefaultDecode: function CalGrayCS_isDefaultDecode(decodeMap) { - return ColorSpace.isDefaultDecode(decodeMap, this.numComps); - }, - usesZeroToOneRange: true - }; - return CalGrayCS; -})(); - -// -// LabCS: Based on "PDF Reference, Sixth Ed", p.250 -// -var LabCS = (function LabCSClosure() { - function LabCS(whitePoint, blackPoint, range) { - this.name = 'Lab'; - this.numComps = 3; - this.defaultColor = new Float32Array([0, 0, 0]); - - if (!whitePoint) - error('WhitePoint missing - required for color space Lab'); - blackPoint = blackPoint || [0, 0, 0]; - range = range || [-100, 100, -100, 100]; - - // Translate args to spec variables - this.XW = whitePoint[0]; - this.YW = whitePoint[1]; - this.ZW = whitePoint[2]; - this.amin = range[0]; - this.amax = range[1]; - this.bmin = range[2]; - this.bmax = range[3]; - - // These are here just for completeness - the spec doesn't offer any - // formulas that use BlackPoint in Lab - this.XB = blackPoint[0]; - this.YB = blackPoint[1]; - this.ZB = blackPoint[2]; - - // Validate vars as per spec - if (this.XW < 0 || this.ZW < 0 || this.YW !== 1) - error('Invalid WhitePoint components, no fallback available'); - - if (this.XB < 0 || this.YB < 0 || this.ZB < 0) { - info('Invalid BlackPoint, falling back to default'); - this.XB = this.YB = this.ZB = 0; - } - - if (this.amin > this.amax || this.bmin > this.bmax) { - info('Invalid Range, falling back to defaults'); - this.amin = -100; - this.amax = 100; - this.bmin = -100; - this.bmax = 100; - } - } - - // Function g(x) from spec - function fn_g(x) { - if (x >= 6 / 29) - return x * x * x; - else - return (108 / 841) * (x - 4 / 29); - } - - function decode(value, high1, low2, high2) { - return low2 + (value) * (high2 - low2) / (high1); - } - - // If decoding is needed maxVal should be 2^bits per component - 1. - function convertToRgb(cs, src, srcOffset, maxVal, dest, destOffset) { - // XXX: Lab input is in the range of [0, 100], [amin, amax], [bmin, bmax] - // not the usual [0, 1]. If a command like setFillColor is used the src - // values will already be within the correct range. However, if we are - // converting an image we have to map the values to the correct range given - // above. - // Ls,as,bs <---> L*,a*,b* in the spec - var Ls = src[srcOffset]; - var as = src[srcOffset + 1]; - var bs = src[srcOffset + 2]; - if (maxVal !== false) { - Ls = decode(Ls, maxVal, 0, 100); - as = decode(as, maxVal, cs.amin, cs.amax); - bs = decode(bs, maxVal, cs.bmin, cs.bmax); - } - - // Adjust limits of 'as' and 'bs' - as = as > cs.amax ? cs.amax : as < cs.amin ? cs.amin : as; - bs = bs > cs.bmax ? cs.bmax : bs < cs.bmin ? cs.bmin : bs; - - // Computes intermediate variables X,Y,Z as per spec - var M = (Ls + 16) / 116; - var L = M + (as / 500); - var N = M - (bs / 200); - - var X = cs.XW * fn_g(L); - var Y = cs.YW * fn_g(M); - var Z = cs.ZW * fn_g(N); - - var r, g, b; - // Using different conversions for D50 and D65 white points, - // per http://www.color.org/srgb.pdf - if (cs.ZW < 1) { - // Assuming D50 (X=0.9642, Y=1.00, Z=0.8249) - r = X * 3.1339 + Y * -1.6170 + Z * -0.4906; - g = X * -0.9785 + Y * 1.9160 + Z * 0.0333; - b = X * 0.0720 + Y * -0.2290 + Z * 1.4057; - } else { - // Assuming D65 (X=0.9505, Y=1.00, Z=1.0888) - r = X * 3.2406 + Y * -1.5372 + Z * -0.4986; - g = X * -0.9689 + Y * 1.8758 + Z * 0.0415; - b = X * 0.0557 + Y * -0.2040 + Z * 1.0570; - } - // clamp color values to [0,1] range then convert to [0,255] range. - dest[destOffset] = Math.sqrt(r < 0 ? 0 : r > 1 ? 1 : r) * 255; - dest[destOffset + 1] = Math.sqrt(g < 0 ? 0 : g > 1 ? 1 : g) * 255; - dest[destOffset + 2] = Math.sqrt(b < 0 ? 0 : b > 1 ? 1 : b) * 255; - } - - LabCS.prototype = { - getRgb: function LabCS_getRgb(src, srcOffset) { - var rgb = new Uint8Array(3); - convertToRgb(this, src, srcOffset, false, rgb, 0); - return rgb; - }, - getRgbItem: function LabCS_getRgbItem(src, srcOffset, dest, destOffset) { - convertToRgb(this, src, srcOffset, false, dest, destOffset); - }, - getRgbBuffer: function LabCS_getRgbBuffer(src, srcOffset, count, - dest, destOffset, bits) { - var maxVal = (1 << bits) - 1; - for (var i = 0; i < count; i++) { - convertToRgb(this, src, srcOffset, maxVal, dest, destOffset); - srcOffset += 3; - destOffset += 3; - } - }, - getOutputLength: function LabCS_getOutputLength(inputLength) { - return inputLength; - }, - isPassthrough: ColorSpace.prototype.isPassthrough, - isDefaultDecode: function LabCS_isDefaultDecode(decodeMap) { - // XXX: Decoding is handled with the lab conversion because of the strange - // ranges that are used. - return true; - }, - usesZeroToOneRange: false - }; - return LabCS; -})(); - - - -var PatternType = { - AXIAL: 2, - RADIAL: 3 -}; - -var Pattern = (function PatternClosure() { - // Constructor should define this.getPattern - function Pattern() { - error('should not call Pattern constructor'); - } - - Pattern.prototype = { - // Input: current Canvas context - // Output: the appropriate fillStyle or strokeStyle - getPattern: function Pattern_getPattern(ctx) { - error('Should not call Pattern.getStyle: ' + ctx); - } - }; - - Pattern.shadingFromIR = function Pattern_shadingFromIR(raw) { - return Shadings[raw[0]].fromIR(raw); - }; - - Pattern.parseShading = function Pattern_parseShading(shading, matrix, xref, - res) { - - var dict = isStream(shading) ? shading.dict : shading; - var type = dict.get('ShadingType'); - - switch (type) { - case PatternType.AXIAL: - case PatternType.RADIAL: - // Both radial and axial shadings are handled by RadialAxial shading. - return new Shadings.RadialAxial(dict, matrix, xref, res); - default: - UnsupportedManager.notify(UNSUPPORTED_FEATURES.shadingPattern); - return new Shadings.Dummy(); - } - }; - return Pattern; -})(); - -var Shadings = {}; - -// A small number to offset the first/last color stops so we can insert ones to -// support extend. Number.MIN_VALUE appears to be too small and breaks the -// extend. 1e-7 works in FF but chrome seems to use an even smaller sized number -// internally so we have to go bigger. -Shadings.SMALL_NUMBER = 1e-2; - -// Radial and axial shading have very similar implementations -// If needed, the implementations can be broken into two classes -Shadings.RadialAxial = (function RadialAxialClosure() { - function RadialAxial(dict, matrix, xref, res, ctx) { - this.matrix = matrix; - this.coordsArr = dict.get('Coords'); - this.shadingType = dict.get('ShadingType'); - this.type = 'Pattern'; - this.ctx = ctx; - var cs = dict.get('ColorSpace', 'CS'); - cs = ColorSpace.parse(cs, xref, res); - this.cs = cs; - - var t0 = 0.0, t1 = 1.0; - if (dict.has('Domain')) { - var domainArr = dict.get('Domain'); - t0 = domainArr[0]; - t1 = domainArr[1]; - } - - var extendStart = false, extendEnd = false; - if (dict.has('Extend')) { - var extendArr = dict.get('Extend'); - extendStart = extendArr[0]; - extendEnd = extendArr[1]; - } - - if (this.shadingType === PatternType.RADIAL && - (!extendStart || !extendEnd)) { - // Radial gradient only currently works if either circle is fully within - // the other circle. - var x1 = this.coordsArr[0]; - var y1 = this.coordsArr[1]; - var r1 = this.coordsArr[2]; - var x2 = this.coordsArr[3]; - var y2 = this.coordsArr[4]; - var r2 = this.coordsArr[5]; - var distance = Math.sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2)); - if (r1 <= r2 + distance && - r2 <= r1 + distance) { - warn('Unsupported radial gradient.'); - } - } - - this.extendStart = extendStart; - this.extendEnd = extendEnd; - - var fnObj = dict.get('Function'); - var fn; - if (isArray(fnObj)) { - var fnArray = []; - for (var j = 0, jj = fnObj.length; j < jj; j++) { - var obj = xref.fetchIfRef(fnObj[j]); - if (!isPDFFunction(obj)) { - error('Invalid function'); - } - fnArray.push(PDFFunction.parse(xref, obj)); - } - fn = function radialAxialColorFunction(arg) { - var out = []; - for (var i = 0, ii = fnArray.length; i < ii; i++) { - out.push(fnArray[i](arg)[0]); - } - return out; - }; - } else { - if (!isPDFFunction(fnObj)) { - error('Invalid function'); - } - fn = PDFFunction.parse(xref, fnObj); - } - - // 10 samples seems good enough for now, but probably won't work - // if there are sharp color changes. Ideally, we would implement - // the spec faithfully and add lossless optimizations. - var diff = t1 - t0; - var step = diff / 10; - - var colorStops = this.colorStops = []; - - // Protect against bad domains so we don't end up in an infinte loop below. - if (t0 >= t1 || step <= 0) { - // Acrobat doesn't seem to handle these cases so we'll ignore for - // now. - info('Bad shading domain.'); - return; - } - - for (var i = t0; i <= t1; i += step) { - var rgbColor = cs.getRgb(fn([i]), 0); - var cssColor = Util.makeCssRgb(rgbColor); - colorStops.push([(i - t0) / diff, cssColor]); - } - - var background = 'transparent'; - if (dict.has('Background')) { - var rgbColor = cs.getRgb(dict.get('Background'), 0); - background = Util.makeCssRgb(rgbColor); - } - - if (!extendStart) { - // Insert a color stop at the front and offset the first real color stop - // so it doesn't conflict with the one we insert. - colorStops.unshift([0, background]); - colorStops[1][0] += Shadings.SMALL_NUMBER; - } - if (!extendEnd) { - // Same idea as above in extendStart but for the end. - colorStops[colorStops.length - 1][0] -= Shadings.SMALL_NUMBER; - colorStops.push([1, background]); - } - - this.colorStops = colorStops; - } - - RadialAxial.fromIR = function RadialAxial_fromIR(raw) { - var type = raw[1]; - var colorStops = raw[2]; - var p0 = raw[3]; - var p1 = raw[4]; - var r0 = raw[5]; - var r1 = raw[6]; - return { - type: 'Pattern', - getPattern: function RadialAxial_getPattern(ctx) { - var grad; - if (type == PatternType.AXIAL) - grad = ctx.createLinearGradient(p0[0], p0[1], p1[0], p1[1]); - else if (type == PatternType.RADIAL) - grad = ctx.createRadialGradient(p0[0], p0[1], r0, p1[0], p1[1], r1); - - for (var i = 0, ii = colorStops.length; i < ii; ++i) { - var c = colorStops[i]; - grad.addColorStop(c[0], c[1]); - } - return grad; - } - }; - }; - - RadialAxial.prototype = { - getIR: function RadialAxial_getIR() { - var coordsArr = this.coordsArr; - var type = this.shadingType; - if (type == PatternType.AXIAL) { - var p0 = [coordsArr[0], coordsArr[1]]; - var p1 = [coordsArr[2], coordsArr[3]]; - var r0 = null; - var r1 = null; - } else if (type == PatternType.RADIAL) { - var p0 = [coordsArr[0], coordsArr[1]]; - var p1 = [coordsArr[3], coordsArr[4]]; - var r0 = coordsArr[2]; - var r1 = coordsArr[5]; - } else { - error('getPattern type unknown: ' + type); - } - - var matrix = this.matrix; - if (matrix) { - p0 = Util.applyTransform(p0, matrix); - p1 = Util.applyTransform(p1, matrix); - } - - return ['RadialAxial', type, this.colorStops, p0, p1, r0, r1]; - } - }; - - return RadialAxial; -})(); - -Shadings.Dummy = (function DummyClosure() { - function Dummy() { - this.type = 'Pattern'; - } - - Dummy.fromIR = function Dummy_fromIR() { - return { - type: 'Pattern', - getPattern: function Dummy_fromIR_getPattern() { - return 'hotpink'; - } - }; - }; - - Dummy.prototype = { - getIR: function Dummy_getIR() { - return ['Dummy']; - } - }; - return Dummy; -})(); - -var TilingPattern = (function TilingPatternClosure() { - var PaintType = { - COLORED: 1, - UNCOLORED: 2 - }; - - var MAX_PATTERN_SIZE = 3000; // 10in @ 300dpi shall be enough - - function TilingPattern(IR, color, ctx, objs, commonObjs, baseTransform) { - this.name = IR[1][0].name; - this.operatorList = IR[2]; - this.matrix = IR[3] || [1, 0, 0, 1, 0, 0]; - this.bbox = IR[4]; - this.xstep = IR[5]; - this.ystep = IR[6]; - this.paintType = IR[7]; - this.tilingType = IR[8]; - this.color = color; - this.objs = objs; - this.commonObjs = commonObjs; - this.baseTransform = baseTransform; - this.type = 'Pattern'; - this.ctx = ctx; - } - - TilingPattern.getIR = function TilingPattern_getIR(operatorList, dict, args) { - var matrix = dict.get('Matrix'); - var bbox = dict.get('BBox'); - var xstep = dict.get('XStep'); - var ystep = dict.get('YStep'); - var paintType = dict.get('PaintType'); - var tilingType = dict.get('TilingType'); - - return [ - 'TilingPattern', args, operatorList, matrix, bbox, xstep, ystep, - paintType, tilingType - ]; - }; - - TilingPattern.prototype = { - createPatternCanvas: function TilinPattern_createPatternCanvas(owner) { - var operatorList = this.operatorList; - var bbox = this.bbox; - var xstep = this.xstep; - var ystep = this.ystep; - var paintType = this.paintType; - var tilingType = this.tilingType; - var color = this.color; - var objs = this.objs; - var commonObjs = this.commonObjs; - var ctx = this.ctx; - - info('TilingType: ' + tilingType); - - var x0 = bbox[0], y0 = bbox[1], x1 = bbox[2], y1 = bbox[3]; - - var topLeft = [x0, y0]; - // we want the canvas to be as large as the step size - var botRight = [x0 + xstep, y0 + ystep]; - - var width = botRight[0] - topLeft[0]; - var height = botRight[1] - topLeft[1]; - - // Obtain scale from matrix and current transformation matrix. - var matrixScale = Util.singularValueDecompose2dScale(this.matrix); - var curMatrixScale = Util.singularValueDecompose2dScale( - this.baseTransform); - var combinedScale = [matrixScale[0] * curMatrixScale[0], - matrixScale[1] * curMatrixScale[1]]; - - // MAX_PATTERN_SIZE is used to avoid OOM situation. - // Use width and height values that are as close as possible to the end - // result when the pattern is used. Too low value makes the pattern look - // blurry. Too large value makes it look too crispy. - width = Math.min(Math.ceil(Math.abs(width * combinedScale[0])), - MAX_PATTERN_SIZE); - - height = Math.min(Math.ceil(Math.abs(height * combinedScale[1])), - MAX_PATTERN_SIZE); - - var tmpCanvas = CachedCanvases.getCanvas('pattern', width, height, true); - var tmpCtx = tmpCanvas.context; - var graphics = new CanvasGraphics(tmpCtx, commonObjs, objs); - graphics.groupLevel = owner.groupLevel; - - this.setFillAndStrokeStyleToContext(tmpCtx, paintType, color); - - this.setScale(width, height, xstep, ystep); - this.transformToScale(graphics); - - // transform coordinates to pattern space - var tmpTranslate = [1, 0, 0, 1, -topLeft[0], -topLeft[1]]; - graphics.transform.apply(graphics, tmpTranslate); - - this.clipBbox(graphics, bbox, x0, y0, x1, y1); - - graphics.executeOperatorList(operatorList); - return tmpCanvas.canvas; - }, - - setScale: function TilingPattern_setScale(width, height, xstep, ystep) { - this.scale = [width / xstep, height / ystep]; - }, - - transformToScale: function TilingPattern_transformToScale(graphics) { - var scale = this.scale; - var tmpScale = [scale[0], 0, 0, scale[1], 0, 0]; - graphics.transform.apply(graphics, tmpScale); - }, - - scaleToContext: function TilingPattern_scaleToContext() { - var scale = this.scale; - this.ctx.scale(1 / scale[0], 1 / scale[1]); - }, - - clipBbox: function clipBbox(graphics, bbox, x0, y0, x1, y1) { - if (bbox && isArray(bbox) && 4 == bbox.length) { - var bboxWidth = x1 - x0; - var bboxHeight = y1 - y0; - graphics.rectangle(x0, y0, bboxWidth, bboxHeight); - graphics.clip(); - graphics.endPath(); - } - }, - - setFillAndStrokeStyleToContext: - function setFillAndStrokeStyleToContext(context, paintType, color) { - switch (paintType) { - case PaintType.COLORED: - var ctx = this.ctx; - context.fillStyle = ctx.fillStyle; - context.strokeStyle = ctx.strokeStyle; - break; - case PaintType.UNCOLORED: - var rgbColor = ColorSpace.singletons.rgb.getRgb(color, 0); - var cssColor = Util.makeCssRgb(rgbColor); - context.fillStyle = cssColor; - context.strokeStyle = cssColor; - break; - default: - error('Unsupported paint type: ' + paintType); - } - }, - - getPattern: function TilingPattern_getPattern(ctx, owner) { - var temporaryPatternCanvas = this.createPatternCanvas(owner); - - var ctx = this.ctx; - ctx.setTransform.apply(ctx, this.baseTransform); - ctx.transform.apply(ctx, this.matrix); - this.scaleToContext(); - - return ctx.createPattern(temporaryPatternCanvas, 'repeat'); - } - }; - - return TilingPattern; -})(); - - - -var PDFFunction = (function PDFFunctionClosure() { - var CONSTRUCT_SAMPLED = 0; - var CONSTRUCT_INTERPOLATED = 2; - var CONSTRUCT_STICHED = 3; - var CONSTRUCT_POSTSCRIPT = 4; - - return { - getSampleArray: function PDFFunction_getSampleArray(size, outputSize, bps, - str) { - var length = 1; - for (var i = 0, ii = size.length; i < ii; i++) - length *= size[i]; - length *= outputSize; - - var array = []; - var codeSize = 0; - var codeBuf = 0; - // 32 is a valid bps so shifting won't work - var sampleMul = 1.0 / (Math.pow(2.0, bps) - 1); - - var strBytes = str.getBytes((length * bps + 7) / 8); - var strIdx = 0; - for (var i = 0; i < length; i++) { - while (codeSize < bps) { - codeBuf <<= 8; - codeBuf |= strBytes[strIdx++]; - codeSize += 8; - } - codeSize -= bps; - array.push((codeBuf >> codeSize) * sampleMul); - codeBuf &= (1 << codeSize) - 1; - } - return array; - }, - - getIR: function PDFFunction_getIR(xref, fn) { - var dict = fn.dict; - if (!dict) - dict = fn; - - var types = [this.constructSampled, - null, - this.constructInterpolated, - this.constructStiched, - this.constructPostScript]; - - var typeNum = dict.get('FunctionType'); - var typeFn = types[typeNum]; - if (!typeFn) - error('Unknown type of function'); - - return typeFn.call(this, fn, dict, xref); - }, - - fromIR: function PDFFunction_fromIR(IR) { - var type = IR[0]; - switch (type) { - case CONSTRUCT_SAMPLED: - return this.constructSampledFromIR(IR); - case CONSTRUCT_INTERPOLATED: - return this.constructInterpolatedFromIR(IR); - case CONSTRUCT_STICHED: - return this.constructStichedFromIR(IR); - //case CONSTRUCT_POSTSCRIPT: - default: - return this.constructPostScriptFromIR(IR); - } - }, - - parse: function PDFFunction_parse(xref, fn) { - var IR = this.getIR(xref, fn); - return this.fromIR(IR); - }, - - constructSampled: function PDFFunction_constructSampled(str, dict) { - function toMultiArray(arr) { - var inputLength = arr.length; - var outputLength = arr.length / 2; - var out = []; - var index = 0; - for (var i = 0; i < inputLength; i += 2) { - out[index] = [arr[i], arr[i + 1]]; - ++index; - } - return out; - } - var domain = dict.get('Domain'); - var range = dict.get('Range'); - - if (!domain || !range) - error('No domain or range'); - - var inputSize = domain.length / 2; - var outputSize = range.length / 2; - - domain = toMultiArray(domain); - range = toMultiArray(range); - - var size = dict.get('Size'); - var bps = dict.get('BitsPerSample'); - var order = dict.get('Order') || 1; - if (order !== 1) { - // No description how cubic spline interpolation works in PDF32000:2008 - // As in poppler, ignoring order, linear interpolation may work as good - info('No support for cubic spline interpolation: ' + order); - } - - var encode = dict.get('Encode'); - if (!encode) { - encode = []; - for (var i = 0; i < inputSize; ++i) { - encode.push(0); - encode.push(size[i] - 1); - } - } - encode = toMultiArray(encode); - - var decode = dict.get('Decode'); - if (!decode) - decode = range; - else - decode = toMultiArray(decode); - - var samples = this.getSampleArray(size, outputSize, bps, str); - - return [ - CONSTRUCT_SAMPLED, inputSize, domain, encode, decode, samples, size, - outputSize, Math.pow(2, bps) - 1, range - ]; - }, - - constructSampledFromIR: function PDFFunction_constructSampledFromIR(IR) { - // See chapter 3, page 109 of the PDF reference - function interpolate(x, xmin, xmax, ymin, ymax) { - return ymin + ((x - xmin) * ((ymax - ymin) / (xmax - xmin))); - } - - return function constructSampledFromIRResult(args) { - // See chapter 3, page 110 of the PDF reference. - var m = IR[1]; - var domain = IR[2]; - var encode = IR[3]; - var decode = IR[4]; - var samples = IR[5]; - var size = IR[6]; - var n = IR[7]; - var mask = IR[8]; - var range = IR[9]; - - if (m != args.length) - error('Incorrect number of arguments: ' + m + ' != ' + - args.length); - - var x = args; - - // Building the cube vertices: its part and sample index - // http://rjwagner49.com/Mathematics/Interpolation.pdf - var cubeVertices = 1 << m; - var cubeN = new Float64Array(cubeVertices); - var cubeVertex = new Uint32Array(cubeVertices); - for (var j = 0; j < cubeVertices; j++) - cubeN[j] = 1; - - var k = n, pos = 1; - // Map x_i to y_j for 0 <= i < m using the sampled function. - for (var i = 0; i < m; ++i) { - // x_i' = min(max(x_i, Domain_2i), Domain_2i+1) - var domain_2i = domain[i][0]; - var domain_2i_1 = domain[i][1]; - var xi = Math.min(Math.max(x[i], domain_2i), domain_2i_1); - - // e_i = Interpolate(x_i', Domain_2i, Domain_2i+1, - // Encode_2i, Encode_2i+1) - var e = interpolate(xi, domain_2i, domain_2i_1, - encode[i][0], encode[i][1]); - - // e_i' = min(max(e_i, 0), Size_i - 1) - var size_i = size[i]; - e = Math.min(Math.max(e, 0), size_i - 1); - - // Adjusting the cube: N and vertex sample index - var e0 = e < size_i - 1 ? Math.floor(e) : e - 1; // e1 = e0 + 1; - var n0 = e0 + 1 - e; // (e1 - e) / (e1 - e0); - var n1 = e - e0; // (e - e0) / (e1 - e0); - var offset0 = e0 * k; - var offset1 = offset0 + k; // e1 * k - for (var j = 0; j < cubeVertices; j++) { - if (j & pos) { - cubeN[j] *= n1; - cubeVertex[j] += offset1; - } else { - cubeN[j] *= n0; - cubeVertex[j] += offset0; - } - } - - k *= size_i; - pos <<= 1; - } - - var y = new Float64Array(n); - for (var j = 0; j < n; ++j) { - // Sum all cube vertices' samples portions - var rj = 0; - for (var i = 0; i < cubeVertices; i++) - rj += samples[cubeVertex[i] + j] * cubeN[i]; - - // r_j' = Interpolate(r_j, 0, 2^BitsPerSample - 1, - // Decode_2j, Decode_2j+1) - rj = interpolate(rj, 0, 1, decode[j][0], decode[j][1]); - - // y_j = min(max(r_j, range_2j), range_2j+1) - y[j] = Math.min(Math.max(rj, range[j][0]), range[j][1]); - } - - return y; - }; - }, - - constructInterpolated: function PDFFunction_constructInterpolated(str, - dict) { - var c0 = dict.get('C0') || [0]; - var c1 = dict.get('C1') || [1]; - var n = dict.get('N'); - - if (!isArray(c0) || !isArray(c1)) - error('Illegal dictionary for interpolated function'); - - var length = c0.length; - var diff = []; - for (var i = 0; i < length; ++i) - diff.push(c1[i] - c0[i]); - - return [CONSTRUCT_INTERPOLATED, c0, diff, n]; - }, - - constructInterpolatedFromIR: - function PDFFunction_constructInterpolatedFromIR(IR) { - var c0 = IR[1]; - var diff = IR[2]; - var n = IR[3]; - - var length = diff.length; - - return function constructInterpolatedFromIRResult(args) { - var x = n == 1 ? args[0] : Math.pow(args[0], n); - - var out = []; - for (var j = 0; j < length; ++j) - out.push(c0[j] + (x * diff[j])); - - return out; - - }; - }, - - constructStiched: function PDFFunction_constructStiched(fn, dict, xref) { - var domain = dict.get('Domain'); - - if (!domain) - error('No domain'); - - var inputSize = domain.length / 2; - if (inputSize != 1) - error('Bad domain for stiched function'); - - var fnRefs = dict.get('Functions'); - var fns = []; - for (var i = 0, ii = fnRefs.length; i < ii; ++i) - fns.push(PDFFunction.getIR(xref, xref.fetchIfRef(fnRefs[i]))); - - var bounds = dict.get('Bounds'); - var encode = dict.get('Encode'); - - return [CONSTRUCT_STICHED, domain, bounds, encode, fns]; - }, - - constructStichedFromIR: function PDFFunction_constructStichedFromIR(IR) { - var domain = IR[1]; - var bounds = IR[2]; - var encode = IR[3]; - var fnsIR = IR[4]; - var fns = []; - - for (var i = 0, ii = fnsIR.length; i < ii; i++) { - fns.push(PDFFunction.fromIR(fnsIR[i])); - } - - return function constructStichedFromIRResult(args) { - var clip = function constructStichedFromIRClip(v, min, max) { - if (v > max) - v = max; - else if (v < min) - v = min; - return v; - }; - - // clip to domain - var v = clip(args[0], domain[0], domain[1]); - // calulate which bound the value is in - for (var i = 0, ii = bounds.length; i < ii; ++i) { - if (v < bounds[i]) - break; - } - - // encode value into domain of function - var dmin = domain[0]; - if (i > 0) - dmin = bounds[i - 1]; - var dmax = domain[1]; - if (i < bounds.length) - dmax = bounds[i]; - - var rmin = encode[2 * i]; - var rmax = encode[2 * i + 1]; - - var v2 = rmin + (v - dmin) * (rmax - rmin) / (dmax - dmin); - - // call the appropropriate function - return fns[i]([v2]); - }; - }, - - constructPostScript: function PDFFunction_constructPostScript(fn, dict, - xref) { - var domain = dict.get('Domain'); - var range = dict.get('Range'); - - if (!domain) - error('No domain.'); - - if (!range) - error('No range.'); - - var lexer = new PostScriptLexer(fn); - var parser = new PostScriptParser(lexer); - var code = parser.parse(); - - return [CONSTRUCT_POSTSCRIPT, domain, range, code]; - }, - - constructPostScriptFromIR: function PDFFunction_constructPostScriptFromIR( - IR) { - var domain = IR[1]; - var range = IR[2]; - var code = IR[3]; - var numOutputs = range.length / 2; - var evaluator = new PostScriptEvaluator(code); - // Cache the values for a big speed up, the cache size is limited though - // since the number of possible values can be huge from a PS function. - var cache = new FunctionCache(); - return function constructPostScriptFromIRResult(args) { - var initialStack = []; - for (var i = 0, ii = (domain.length / 2); i < ii; ++i) { - initialStack.push(args[i]); - } - - var key = initialStack.join('_'); - if (cache.has(key)) - return cache.get(key); - - var stack = evaluator.execute(initialStack); - var transformed = []; - for (i = numOutputs - 1; i >= 0; --i) { - var out = stack.pop(); - var rangeIndex = 2 * i; - if (out < range[rangeIndex]) - out = range[rangeIndex]; - else if (out > range[rangeIndex + 1]) - out = range[rangeIndex + 1]; - transformed[i] = out; - } - cache.set(key, transformed); - return transformed; - }; - } - }; -})(); - -var FunctionCache = (function FunctionCacheClosure() { - // Of 10 PDF's with type4 functions the maxium number of distinct values seen - // was 256. This still may need some tweaking in the future though. - var MAX_CACHE_SIZE = 1024; - function FunctionCache() { - this.cache = {}; - this.total = 0; - } - FunctionCache.prototype = { - has: function FunctionCache_has(key) { - return key in this.cache; - }, - get: function FunctionCache_get(key) { - return this.cache[key]; - }, - set: function FunctionCache_set(key, value) { - if (this.total < MAX_CACHE_SIZE) { - this.cache[key] = value; - this.total++; - } - } - }; - return FunctionCache; -})(); - -var PostScriptStack = (function PostScriptStackClosure() { - var MAX_STACK_SIZE = 100; - function PostScriptStack(initialStack) { - this.stack = initialStack || []; - } - - PostScriptStack.prototype = { - push: function PostScriptStack_push(value) { - if (this.stack.length >= MAX_STACK_SIZE) - error('PostScript function stack overflow.'); - this.stack.push(value); - }, - pop: function PostScriptStack_pop() { - if (this.stack.length <= 0) - error('PostScript function stack underflow.'); - return this.stack.pop(); - }, - copy: function PostScriptStack_copy(n) { - if (this.stack.length + n >= MAX_STACK_SIZE) - error('PostScript function stack overflow.'); - var stack = this.stack; - for (var i = stack.length - n, j = n - 1; j >= 0; j--, i++) - stack.push(stack[i]); - }, - index: function PostScriptStack_index(n) { - this.push(this.stack[this.stack.length - n - 1]); - }, - // rotate the last n stack elements p times - roll: function PostScriptStack_roll(n, p) { - var stack = this.stack; - var l = stack.length - n; - var r = stack.length - 1, c = l + (p - Math.floor(p / n) * n), i, j, t; - for (i = l, j = r; i < j; i++, j--) { - t = stack[i]; stack[i] = stack[j]; stack[j] = t; - } - for (i = l, j = c - 1; i < j; i++, j--) { - t = stack[i]; stack[i] = stack[j]; stack[j] = t; - } - for (i = c, j = r; i < j; i++, j--) { - t = stack[i]; stack[i] = stack[j]; stack[j] = t; - } - } - }; - return PostScriptStack; -})(); -var PostScriptEvaluator = (function PostScriptEvaluatorClosure() { - function PostScriptEvaluator(operators, operands) { - this.operators = operators; - this.operands = operands; - } - PostScriptEvaluator.prototype = { - execute: function PostScriptEvaluator_execute(initialStack) { - var stack = new PostScriptStack(initialStack); - var counter = 0; - var operators = this.operators; - var length = operators.length; - var operator, a, b; - while (counter < length) { - operator = operators[counter++]; - if (typeof operator == 'number') { - // Operator is really an operand and should be pushed to the stack. - stack.push(operator); - continue; - } - switch (operator) { - // non standard ps operators - case 'jz': // jump if false - b = stack.pop(); - a = stack.pop(); - if (!a) - counter = b; - break; - case 'j': // jump - a = stack.pop(); - counter = a; - break; - - // all ps operators in alphabetical order (excluding if/ifelse) - case 'abs': - a = stack.pop(); - stack.push(Math.abs(a)); - break; - case 'add': - b = stack.pop(); - a = stack.pop(); - stack.push(a + b); - break; - case 'and': - b = stack.pop(); - a = stack.pop(); - if (isBool(a) && isBool(b)) - stack.push(a && b); - else - stack.push(a & b); - break; - case 'atan': - a = stack.pop(); - stack.push(Math.atan(a)); - break; - case 'bitshift': - b = stack.pop(); - a = stack.pop(); - if (a > 0) - stack.push(a << b); - else - stack.push(a >> b); - break; - case 'ceiling': - a = stack.pop(); - stack.push(Math.ceil(a)); - break; - case 'copy': - a = stack.pop(); - stack.copy(a); - break; - case 'cos': - a = stack.pop(); - stack.push(Math.cos(a)); - break; - case 'cvi': - a = stack.pop() | 0; - stack.push(a); - break; - case 'cvr': - // noop - break; - case 'div': - b = stack.pop(); - a = stack.pop(); - stack.push(a / b); - break; - case 'dup': - stack.copy(1); - break; - case 'eq': - b = stack.pop(); - a = stack.pop(); - stack.push(a == b); - break; - case 'exch': - stack.roll(2, 1); - break; - case 'exp': - b = stack.pop(); - a = stack.pop(); - stack.push(Math.pow(a, b)); - break; - case 'false': - stack.push(false); - break; - case 'floor': - a = stack.pop(); - stack.push(Math.floor(a)); - break; - case 'ge': - b = stack.pop(); - a = stack.pop(); - stack.push(a >= b); - break; - case 'gt': - b = stack.pop(); - a = stack.pop(); - stack.push(a > b); - break; - case 'idiv': - b = stack.pop(); - a = stack.pop(); - stack.push((a / b) | 0); - break; - case 'index': - a = stack.pop(); - stack.index(a); - break; - case 'le': - b = stack.pop(); - a = stack.pop(); - stack.push(a <= b); - break; - case 'ln': - a = stack.pop(); - stack.push(Math.log(a)); - break; - case 'log': - a = stack.pop(); - stack.push(Math.log(a) / Math.LN10); - break; - case 'lt': - b = stack.pop(); - a = stack.pop(); - stack.push(a < b); - break; - case 'mod': - b = stack.pop(); - a = stack.pop(); - stack.push(a % b); - break; - case 'mul': - b = stack.pop(); - a = stack.pop(); - stack.push(a * b); - break; - case 'ne': - b = stack.pop(); - a = stack.pop(); - stack.push(a != b); - break; - case 'neg': - a = stack.pop(); - stack.push(-b); - break; - case 'not': - a = stack.pop(); - if (isBool(a) && isBool(b)) - stack.push(a && b); - else - stack.push(a & b); - break; - case 'or': - b = stack.pop(); - a = stack.pop(); - if (isBool(a) && isBool(b)) - stack.push(a || b); - else - stack.push(a | b); - break; - case 'pop': - stack.pop(); - break; - case 'roll': - b = stack.pop(); - a = stack.pop(); - stack.roll(a, b); - break; - case 'round': - a = stack.pop(); - stack.push(Math.round(a)); - break; - case 'sin': - a = stack.pop(); - stack.push(Math.sin(a)); - break; - case 'sqrt': - a = stack.pop(); - stack.push(Math.sqrt(a)); - break; - case 'sub': - b = stack.pop(); - a = stack.pop(); - stack.push(a - b); - break; - case 'true': - stack.push(true); - break; - case 'truncate': - a = stack.pop(); - a = a < 0 ? Math.ceil(a) : Math.floor(a); - stack.push(a); - break; - case 'xor': - b = stack.pop(); - a = stack.pop(); - if (isBool(a) && isBool(b)) - stack.push(a != b); - else - stack.push(a ^ b); - break; - default: - error('Unknown operator ' + operator); - break; - } - } - return stack.stack; - } - }; - return PostScriptEvaluator; -})(); - -var PostScriptParser = (function PostScriptParserClosure() { - function PostScriptParser(lexer) { - this.lexer = lexer; - this.operators = []; - this.token = null; - this.prev = null; - } - PostScriptParser.prototype = { - nextToken: function PostScriptParser_nextToken() { - this.prev = this.token; - this.token = this.lexer.getToken(); - }, - accept: function PostScriptParser_accept(type) { - if (this.token.type == type) { - this.nextToken(); - return true; - } - return false; - }, - expect: function PostScriptParser_expect(type) { - if (this.accept(type)) - return true; - error('Unexpected symbol: found ' + this.token.type + ' expected ' + - type + '.'); - }, - parse: function PostScriptParser_parse() { - this.nextToken(); - this.expect(PostScriptTokenTypes.LBRACE); - this.parseBlock(); - this.expect(PostScriptTokenTypes.RBRACE); - return this.operators; - }, - parseBlock: function PostScriptParser_parseBlock() { - while (true) { - if (this.accept(PostScriptTokenTypes.NUMBER)) { - this.operators.push(this.prev.value); - } else if (this.accept(PostScriptTokenTypes.OPERATOR)) { - this.operators.push(this.prev.value); - } else if (this.accept(PostScriptTokenTypes.LBRACE)) { - this.parseCondition(); - } else { - return; - } - } - }, - parseCondition: function PostScriptParser_parseCondition() { - // Add two place holders that will be updated later - var conditionLocation = this.operators.length; - this.operators.push(null, null); - - this.parseBlock(); - this.expect(PostScriptTokenTypes.RBRACE); - if (this.accept(PostScriptTokenTypes.IF)) { - // The true block is right after the 'if' so it just falls through on - // true else it jumps and skips the true block. - this.operators[conditionLocation] = this.operators.length; - this.operators[conditionLocation + 1] = 'jz'; - } else if (this.accept(PostScriptTokenTypes.LBRACE)) { - var jumpLocation = this.operators.length; - this.operators.push(null, null); - var endOfTrue = this.operators.length; - this.parseBlock(); - this.expect(PostScriptTokenTypes.RBRACE); - this.expect(PostScriptTokenTypes.IFELSE); - // The jump is added at the end of the true block to skip the false - // block. - this.operators[jumpLocation] = this.operators.length; - this.operators[jumpLocation + 1] = 'j'; - - this.operators[conditionLocation] = endOfTrue; - this.operators[conditionLocation + 1] = 'jz'; - } else { - error('PS Function: error parsing conditional.'); - } - } - }; - return PostScriptParser; -})(); - -var PostScriptTokenTypes = { - LBRACE: 0, - RBRACE: 1, - NUMBER: 2, - OPERATOR: 3, - IF: 4, - IFELSE: 5 -}; - -var PostScriptToken = (function PostScriptTokenClosure() { - function PostScriptToken(type, value) { - this.type = type; - this.value = value; - } - - var opCache = {}; - - PostScriptToken.getOperator = function PostScriptToken_getOperator(op) { - var opValue = opCache[op]; - if (opValue) - return opValue; - - return opCache[op] = new PostScriptToken(PostScriptTokenTypes.OPERATOR, op); - }; - - PostScriptToken.LBRACE = new PostScriptToken(PostScriptTokenTypes.LBRACE, - '{'); - PostScriptToken.RBRACE = new PostScriptToken(PostScriptTokenTypes.RBRACE, - '}'); - PostScriptToken.IF = new PostScriptToken(PostScriptTokenTypes.IF, 'IF'); - PostScriptToken.IFELSE = new PostScriptToken(PostScriptTokenTypes.IFELSE, - 'IFELSE'); - return PostScriptToken; -})(); - -var PostScriptLexer = (function PostScriptLexerClosure() { - function PostScriptLexer(stream) { - this.stream = stream; - this.nextChar(); - } - PostScriptLexer.prototype = { - nextChar: function PostScriptLexer_nextChar() { - return (this.currentChar = this.stream.getByte()); - }, - getToken: function PostScriptLexer_getToken() { - var s = ''; - var comment = false; - var ch = this.currentChar; - - // skip comments - while (true) { - if (ch < 0) { - return EOF; - } - - if (comment) { - if (ch === 0x0A || ch === 0x0D) { - comment = false; - } - } else if (ch == 0x25) { // '%' - comment = true; - } else if (!Lexer.isSpace(ch)) { - break; - } - ch = this.nextChar(); - } - switch (ch | 0) { - case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: // '0'-'4' - case 0x35: case 0x36: case 0x37: case 0x38: case 0x39: // '5'-'9' - case 0x2B: case 0x2D: case 0x2E: // '+', '-', '.' - return new PostScriptToken(PostScriptTokenTypes.NUMBER, - this.getNumber()); - case 0x7B: // '{' - this.nextChar(); - return PostScriptToken.LBRACE; - case 0x7D: // '}' - this.nextChar(); - return PostScriptToken.RBRACE; - } - // operator - var str = String.fromCharCode(ch); - while ((ch = this.nextChar()) >= 0 && // and 'A'-'Z', 'a'-'z' - ((ch >= 0x41 && ch <= 0x5A) || (ch >= 0x61 && ch <= 0x7A))) { - str += String.fromCharCode(ch); - } - switch (str.toLowerCase()) { - case 'if': - return PostScriptToken.IF; - case 'ifelse': - return PostScriptToken.IFELSE; - default: - return PostScriptToken.getOperator(str); - } - }, - getNumber: function PostScriptLexer_getNumber() { - var ch = this.currentChar; - var str = String.fromCharCode(ch); - while ((ch = this.nextChar()) >= 0) { - if ((ch >= 0x30 && ch <= 0x39) || // '0'-'9' - ch === 0x2D || ch === 0x2E) { // '-', '.' - str += String.fromCharCode(ch); - } else { - break; - } - } - var value = parseFloat(str); - if (isNaN(value)) - error('Invalid floating point number: ' + value); - return value; - } - }; - return PostScriptLexer; -})(); - - - -var Annotation = (function AnnotationClosure() { - // 12.5.5: Algorithm: Appearance streams - function getTransformMatrix(rect, bbox, matrix) { - var bounds = Util.getAxialAlignedBoundingBox(bbox, matrix); - var minX = bounds[0]; - var minY = bounds[1]; - var maxX = bounds[2]; - var maxY = bounds[3]; - - if (minX === maxX || minY === maxY) { - // From real-life file, bbox was [0, 0, 0, 0]. In this case, - // just apply the transform for rect - return [1, 0, 0, 1, rect[0], rect[1]]; - } - - var xRatio = (rect[2] - rect[0]) / (maxX - minX); - var yRatio = (rect[3] - rect[1]) / (maxY - minY); - return [ - xRatio, - 0, - 0, - yRatio, - rect[0] - minX * xRatio, - rect[1] - minY * yRatio - ]; - } - - function getDefaultAppearance(dict) { - var appearanceState = dict.get('AP'); - if (!isDict(appearanceState)) { - return; - } - - var appearance; - var appearances = appearanceState.get('N'); - if (isDict(appearances)) { - var as = dict.get('AS'); - if (as && appearances.has(as.name)) { - appearance = appearances.get(as.name); - } - } else { - appearance = appearances; - } - return appearance; - } - - function Annotation(params) { - if (params.data) { - this.data = params.data; - return; - } - - var dict = params.dict; - var data = this.data = {}; - - data.subtype = dict.get('Subtype').name; - var rect = dict.get('Rect'); - data.rect = Util.normalizeRect(rect); - data.annotationFlags = dict.get('F'); - - var color = dict.get('C'); - if (isArray(color) && color.length === 3) { - // TODO(mack): currently only supporting rgb; need support different - // colorspaces - data.color = color; - } else { - data.color = [0, 0, 0]; - } - - // Some types of annotations have border style dict which has more - // info than the border array - if (dict.has('BS')) { - var borderStyle = dict.get('BS'); - data.borderWidth = borderStyle.has('W') ? borderStyle.get('W') : 1; - } else { - var borderArray = dict.get('Border') || [0, 0, 1]; - data.borderWidth = borderArray[2] || 0; - - // TODO: implement proper support for annotations with line dash patterns. - var dashArray = borderArray[3]; - if (dashArray && isArray(dashArray)) { - var dashArrayLength = dashArray.length; - if (dashArrayLength > 0) { - // According to the PDF specification: the elements in a dashArray - // shall be numbers that are nonnegative and not all equal to zero. - var isInvalid = false; - var numPositive = 0; - for (var i = 0; i < dashArrayLength; i++) { - if (!(+dashArray[i] >= 0)) { - isInvalid = true; - break; - } else if (dashArray[i] > 0) { - numPositive++; - } - } - if (isInvalid || numPositive === 0) { - data.borderWidth = 0; - } - } - } - } - - this.appearance = getDefaultAppearance(dict); - data.hasAppearance = !!this.appearance; - } - - Annotation.prototype = { - - getData: function Annotation_getData() { - return this.data; - }, - - hasHtml: function Annotation_hasHtml() { - return false; - }, - - getHtmlElement: function Annotation_getHtmlElement(commonObjs) { - throw new NotImplementedException( - 'getHtmlElement() should be implemented in subclass'); - }, - - // TODO(mack): Remove this, it's not really that helpful. - getEmptyContainer: function Annotation_getEmptyContainer(tagName, rect) { - assert(!isWorker, - 'getEmptyContainer() should be called from main thread'); - - rect = rect || this.data.rect; - var element = document.createElement(tagName); - element.style.width = Math.ceil(rect[2] - rect[0]) + 'px'; - element.style.height = Math.ceil(rect[3] - rect[1]) + 'px'; - return element; - }, - - isViewable: function Annotation_isViewable() { - var data = this.data; - return !!( - data && - (!data.annotationFlags || - !(data.annotationFlags & 0x22)) && // Hidden or NoView - data.rect // rectangle is nessessary - ); - }, - - loadResources: function(keys) { - var promise = new LegacyPromise(); - this.appearance.dict.getAsync('Resources').then(function(resources) { - if (!resources) { - promise.resolve(); - return; - } - var objectLoader = new ObjectLoader(resources.map, - keys, - resources.xref); - objectLoader.load().then(function() { - promise.resolve(resources); - }); - }.bind(this)); - - return promise; - }, - - getOperatorList: function Annotation_getToOperatorList(evaluator) { - - var promise = new LegacyPromise(); - - if (!this.appearance) { - promise.resolve(new OperatorList()); - return promise; - } - - var data = this.data; - - var appearanceDict = this.appearance.dict; - var resourcesPromise = this.loadResources([ - 'ExtGState', - 'ColorSpace', - 'Pattern', - 'Shading', - 'XObject', - 'Font' - // ProcSet - // Properties - ]); - var bbox = appearanceDict.get('BBox') || [0, 0, 1, 1]; - var matrix = appearanceDict.get('Matrix') || [1, 0, 0, 1, 0 ,0]; - var transform = getTransformMatrix(data.rect, bbox, matrix); - - var border = data.border; - - resourcesPromise.then(function(resources) { - var opList = new OperatorList(); - opList.addOp(OPS.beginAnnotation, [data.rect, transform, matrix]); - evaluator.getOperatorList(this.appearance, resources, opList); - opList.addOp(OPS.endAnnotation, []); - promise.resolve(opList); - }.bind(this)); - - return promise; - } - }; - - Annotation.getConstructor = - function Annotation_getConstructor(subtype, fieldType) { - - if (!subtype) { - return; - } - - // TODO(mack): Implement FreeText annotations - if (subtype === 'Link') { - return LinkAnnotation; - } else if (subtype === 'Text') { - return TextAnnotation; - } else if (subtype === 'Widget') { - if (!fieldType) { - return; - } - - if (fieldType === 'Tx') { - return TextWidgetAnnotation; - } else { - return WidgetAnnotation; - } - } else { - return Annotation; - } - }; - - // TODO(mack): Support loading annotation from data - Annotation.fromData = function Annotation_fromData(data) { - var subtype = data.subtype; - var fieldType = data.fieldType; - var Constructor = Annotation.getConstructor(subtype, fieldType); - if (Constructor) { - return new Constructor({ data: data }); - } - }; - - Annotation.fromRef = function Annotation_fromRef(xref, ref) { - - var dict = xref.fetchIfRef(ref); - if (!isDict(dict)) { - return; - } - - var subtype = dict.get('Subtype'); - subtype = isName(subtype) ? subtype.name : ''; - if (!subtype) { - return; - } - - var fieldType = Util.getInheritableProperty(dict, 'FT'); - fieldType = isName(fieldType) ? fieldType.name : ''; - - var Constructor = Annotation.getConstructor(subtype, fieldType); - if (!Constructor) { - return; - } - - var params = { - dict: dict, - ref: ref, - }; - - var annotation = new Constructor(params); - - if (annotation.isViewable()) { - return annotation; - } else { - warn('unimplemented annotation type: ' + subtype); - } - }; - - Annotation.appendToOperatorList = function Annotation_appendToOperatorList( - annotations, opList, pdfManager, partialEvaluator) { - - function reject(e) { - annotationsReadyPromise.reject(e); - } - - var annotationsReadyPromise = new LegacyPromise(); - - var annotationPromises = []; - for (var i = 0, n = annotations.length; i < n; ++i) { - annotationPromises.push(annotations[i].getOperatorList(partialEvaluator)); - } - Promise.all(annotationPromises).then(function(datas) { - opList.addOp(OPS.beginAnnotations, []); - for (var i = 0, n = datas.length; i < n; ++i) { - var annotOpList = datas[i]; - opList.addOpList(annotOpList); - } - opList.addOp(OPS.endAnnotations, []); - annotationsReadyPromise.resolve(); - }, reject); - - return annotationsReadyPromise; - }; - - return Annotation; -})(); -PDFJS.Annotation = Annotation; - - -var WidgetAnnotation = (function WidgetAnnotationClosure() { - - function WidgetAnnotation(params) { - Annotation.call(this, params); - - if (params.data) { - return; - } - - var dict = params.dict; - var data = this.data; - - data.fieldValue = stringToPDFString( - Util.getInheritableProperty(dict, 'V') || ''); - data.alternativeText = stringToPDFString(dict.get('TU') || ''); - data.defaultAppearance = Util.getInheritableProperty(dict, 'DA') || ''; - var fieldType = Util.getInheritableProperty(dict, 'FT'); - data.fieldType = isName(fieldType) ? fieldType.name : ''; - data.fieldFlags = Util.getInheritableProperty(dict, 'Ff') || 0; - this.fieldResources = Util.getInheritableProperty(dict, 'DR') || new Dict(); - - // Building the full field name by collecting the field and - // its ancestors 'T' data and joining them using '.'. - var fieldName = []; - var namedItem = dict; - var ref = params.ref; - while (namedItem) { - var parent = namedItem.get('Parent'); - var parentRef = namedItem.getRaw('Parent'); - var name = namedItem.get('T'); - if (name) { - fieldName.unshift(stringToPDFString(name)); - } else { - // The field name is absent, that means more than one field - // with the same name may exist. Replacing the empty name - // with the '`' plus index in the parent's 'Kids' array. - // This is not in the PDF spec but necessary to id the - // the input controls. - var kids = parent.get('Kids'); - var j, jj; - for (j = 0, jj = kids.length; j < jj; j++) { - var kidRef = kids[j]; - if (kidRef.num == ref.num && kidRef.gen == ref.gen) - break; - } - fieldName.unshift('`' + j); - } - namedItem = parent; - ref = parentRef; - } - data.fullName = fieldName.join('.'); - } - - var parent = Annotation.prototype; - Util.inherit(WidgetAnnotation, Annotation, { - isViewable: function WidgetAnnotation_isViewable() { - if (this.data.fieldType === 'Sig') { - warn('unimplemented annotation type: Widget signature'); - return false; - } - - return parent.isViewable.call(this); - } - }); - - return WidgetAnnotation; -})(); - -var TextWidgetAnnotation = (function TextWidgetAnnotationClosure() { - function TextWidgetAnnotation(params) { - WidgetAnnotation.call(this, params); - - if (params.data) { - return; - } - - this.data.textAlignment = Util.getInheritableProperty(params.dict, 'Q'); - } - - // TODO(mack): This dupes some of the logic in CanvasGraphics.setFont() - function setTextStyles(element, item, fontObj) { - - var style = element.style; - style.fontSize = item.fontSize + 'px'; - style.direction = item.fontDirection < 0 ? 'rtl': 'ltr'; - - if (!fontObj) { - return; - } - - style.fontWeight = fontObj.black ? - (fontObj.bold ? 'bolder' : 'bold') : - (fontObj.bold ? 'bold' : 'normal'); - style.fontStyle = fontObj.italic ? 'italic' : 'normal'; - - var fontName = fontObj.loadedName; - var fontFamily = fontName ? '"' + fontName + '", ' : ''; - // Use a reasonable default font if the font doesn't specify a fallback - var fallbackName = fontObj.fallbackName || 'Helvetica, sans-serif'; - style.fontFamily = fontFamily + fallbackName; - } - - - var parent = WidgetAnnotation.prototype; - Util.inherit(TextWidgetAnnotation, WidgetAnnotation, { - hasHtml: function TextWidgetAnnotation_hasHtml() { - return !this.data.hasAppearance && !!this.data.fieldValue; - }, - - getHtmlElement: function TextWidgetAnnotation_getHtmlElement(commonObjs) { - assert(!isWorker, 'getHtmlElement() shall be called from main thread'); - - var item = this.data; - - var element = this.getEmptyContainer('div'); - element.style.display = 'table'; - - var content = document.createElement('div'); - content.textContent = item.fieldValue; - var textAlignment = item.textAlignment; - content.style.textAlign = ['left', 'center', 'right'][textAlignment]; - content.style.verticalAlign = 'middle'; - content.style.display = 'table-cell'; - - var fontObj = item.fontRefName ? - commonObjs.getData(item.fontRefName) : null; - var cssRules = setTextStyles(content, item, fontObj); - - element.appendChild(content); - - return element; - }, - - getOperatorList: function TextWidgetAnnotation_getOperatorList(evaluator) { - if (this.appearance) { - return Annotation.prototype.getOperatorList.call(this, evaluator); - } - - var promise = new LegacyPromise(); - var opList = new OperatorList(); - var data = this.data; - - // Even if there is an appearance stream, ignore it. This is the - // behaviour used by Adobe Reader. - - var defaultAppearance = data.defaultAppearance; - if (!defaultAppearance) { - promise.resolve(opList); - return promise; - } - - // Include any font resources found in the default appearance - - var stream = new Stream(stringToBytes(defaultAppearance)); - evaluator.getOperatorList(stream, this.fieldResources, opList); - var appearanceFnArray = opList.fnArray; - var appearanceArgsArray = opList.argsArray; - var fnArray = []; - var argsArray = []; - - // TODO(mack): Add support for stroke color - data.rgb = [0, 0, 0]; - // TODO THIS DOESN'T MAKE ANY SENSE SINCE THE fnArray IS EMPTY! - for (var i = 0, n = fnArray.length; i < n; ++i) { - var fnId = appearanceFnArray[i]; - var args = appearanceArgsArray[i]; - - if (fnId === OPS.setFont) { - data.fontRefName = args[0]; - var size = args[1]; - if (size < 0) { - data.fontDirection = -1; - data.fontSize = -size; - } else { - data.fontDirection = 1; - data.fontSize = size; - } - } else if (fnId === OPS.setFillRGBColor) { - data.rgb = args; - } else if (fnId === OPS.setFillGray) { - var rgbValue = args[0] * 255; - data.rgb = [rgbValue, rgbValue, rgbValue]; - } - } - promise.resolve(opList); - return promise; - } - }); - - return TextWidgetAnnotation; -})(); - -var TextAnnotation = (function TextAnnotationClosure() { - function TextAnnotation(params) { - Annotation.call(this, params); - - if (params.data) { - return; - } - - var dict = params.dict; - var data = this.data; - - var content = dict.get('Contents'); - var title = dict.get('T'); - data.content = stringToPDFString(content || ''); - data.title = stringToPDFString(title || ''); - data.name = !dict.has('Name') ? 'Note' : dict.get('Name').name; - } - - var ANNOT_MIN_SIZE = 10; - - Util.inherit(TextAnnotation, Annotation, { - - getOperatorList: function TextAnnotation_getOperatorList(evaluator) { - var promise = new LegacyPromise(); - promise.resolve(new OperatorList()); - return promise; - }, - - hasHtml: function TextAnnotation_hasHtml() { - return true; - }, - - getHtmlElement: function TextAnnotation_getHtmlElement(commonObjs) { - assert(!isWorker, 'getHtmlElement() shall be called from main thread'); - - var item = this.data; - var rect = item.rect; - - // sanity check because of OOo-generated PDFs - if ((rect[3] - rect[1]) < ANNOT_MIN_SIZE) { - rect[3] = rect[1] + ANNOT_MIN_SIZE; - } - if ((rect[2] - rect[0]) < ANNOT_MIN_SIZE) { - rect[2] = rect[0] + (rect[3] - rect[1]); // make it square - } - - var container = this.getEmptyContainer('section', rect); - container.className = 'annotText'; - - var image = document.createElement('img'); - image.style.height = container.style.height; - var iconName = item.name; - image.src = PDFJS.imageResourcesPath + 'annotation-' + - iconName.toLowerCase() + '.svg'; - image.alt = '[{{type}} Annotation]'; - image.dataset.l10nId = 'text_annotation_type'; - image.dataset.l10nArgs = JSON.stringify({type: iconName}); - var content = document.createElement('div'); - content.setAttribute('hidden', true); - var title = document.createElement('h1'); - var text = document.createElement('p'); - content.style.left = Math.floor(rect[2] - rect[0]) + 'px'; - content.style.top = '0px'; - title.textContent = item.title; - - if (!item.content && !item.title) { - content.setAttribute('hidden', true); - } else { - var e = document.createElement('span'); - var lines = item.content.split(/(?:\r\n?|\n)/); - for (var i = 0, ii = lines.length; i < ii; ++i) { - var line = lines[i]; - e.appendChild(document.createTextNode(line)); - if (i < (ii - 1)) - e.appendChild(document.createElement('br')); - } - text.appendChild(e); - - var showAnnotation = function showAnnotation() { - container.style.zIndex += 1; - content.removeAttribute('hidden'); - }; - - var hideAnnotation = function hideAnnotation(e) { - if (e.toElement || e.relatedTarget) { // No context menu is used - container.style.zIndex -= 1; - content.setAttribute('hidden', true); - } - }; - - content.addEventListener('mouseover', showAnnotation, false); - content.addEventListener('mouseout', hideAnnotation, false); - image.addEventListener('mouseover', showAnnotation, false); - image.addEventListener('mouseout', hideAnnotation, false); - } - - content.appendChild(title); - content.appendChild(text); - container.appendChild(image); - container.appendChild(content); - - return container; - } - }); - - return TextAnnotation; -})(); - -var LinkAnnotation = (function LinkAnnotationClosure() { - function LinkAnnotation(params) { - Annotation.call(this, params); - - if (params.data) { - return; - } - - var dict = params.dict; - var data = this.data; - - var action = dict.get('A'); - if (action) { - var linkType = action.get('S').name; - if (linkType === 'URI') { - var url = addDefaultProtocolToUrl(action.get('URI')); - // TODO: pdf spec mentions urls can be relative to a Base - // entry in the dictionary. - if (!isValidUrl(url, false)) { - url = ''; - } - data.url = url; - } else if (linkType === 'GoTo') { - data.dest = action.get('D'); - } else if (linkType === 'GoToR') { - var urlDict = action.get('F'); - if (isDict(urlDict)) { - // We assume that the 'url' is a Filspec dictionary - // and fetch the url without checking any further - url = urlDict.get('F') || ''; - } - - // TODO: pdf reference says that GoToR - // can also have 'NewWindow' attribute - if (!isValidUrl(url, false)) { - url = ''; - } - data.url = url; - data.dest = action.get('D'); - } else if (linkType === 'Named') { - data.action = action.get('N').name; - } else { - warn('unrecognized link type: ' + linkType); - } - } else if (dict.has('Dest')) { - // simple destination link - var dest = dict.get('Dest'); - data.dest = isName(dest) ? dest.name : dest; - } - } - - // Lets URLs beginning with 'www.' default to using the 'http://' protocol. - function addDefaultProtocolToUrl(url) { - if (url.indexOf('www.') === 0) { - return ('http://' + url); - } - return url; - } - - Util.inherit(LinkAnnotation, Annotation, { - hasOperatorList: function LinkAnnotation_hasOperatorList() { - return false; - }, - - hasHtml: function LinkAnnotation_hasHtml() { - return true; - }, - - getHtmlElement: function LinkAnnotation_getHtmlElement(commonObjs) { - var rect = this.data.rect; - var element = document.createElement('a'); - var borderWidth = this.data.borderWidth; - - element.style.borderWidth = borderWidth + 'px'; - var color = this.data.color; - var rgb = []; - for (var i = 0; i < 3; ++i) { - rgb[i] = Math.round(color[i] * 255); - } - element.style.borderColor = Util.makeCssRgb(rgb); - element.style.borderStyle = 'solid'; - - var width = rect[2] - rect[0] - 2 * borderWidth; - var height = rect[3] - rect[1] - 2 * borderWidth; - element.style.width = width + 'px'; - element.style.height = height + 'px'; - - element.href = this.data.url || ''; - return element; - } - }); - - return LinkAnnotation; -})(); - - //#if (FIREFOX || MOZCENTRAL) // @@ -4190,7 +1643,8 @@ var NetworkManager = (function NetworkManagerClosure() { function NetworkManager(url, args) { this.url = url; args = args || {}; - this.httpHeaders = args.httpHeaders || {}; + this.isHttp = /^https?:/i.test(url); + this.httpHeaders = (this.isHttp && args.httpHeaders) || {}; this.withCredentials = args.withCredentials || false; this.getXhr = args.getXhr || function NetworkManager_getXhr() { @@ -4207,17 +1661,16 @@ var NetworkManager = (function NetworkManagerClosure() { } function getArrayBuffer(xhr) { - var data = (xhr.mozResponseArrayBuffer || xhr.mozResponse || - xhr.responseArrayBuffer || xhr.response); + var data = xhr.response; if (typeof data !== 'string') { return data; } var length = data.length; - var buffer = new Uint8Array(length); + var array = new Uint8Array(length); for (var i = 0; i < length; i++) { - buffer[i] = data.charCodeAt(i) & 0xFF; + array[i] = data.charCodeAt(i) & 0xFF; } - return buffer; + return array.buffer; } NetworkManager.prototype = { @@ -4232,11 +1685,11 @@ var NetworkManager = (function NetworkManagerClosure() { return this.request(args); }, - requestFull: function NetworkManager_requestRange(listeners) { + requestFull: function NetworkManager_requestFull(listeners) { return this.request(listeners); }, - request: function NetworkManager_requestRange(args) { + request: function NetworkManager_request(args) { var xhr = this.getXhr(); var xhrId = this.currXhrId++; var pendingRequest = this.pendingRequests[xhrId] = { @@ -4252,7 +1705,7 @@ var NetworkManager = (function NetworkManagerClosure() { } xhr.setRequestHeader(property, value); } - if ('begin' in args && 'end' in args) { + if (this.isHttp && 'begin' in args && 'end' in args) { var rangeStr = args.begin + '-' + (args.end - 1); xhr.setRequestHeader('Range', 'bytes=' + rangeStr); pendingRequest.expectedStatus = 206; @@ -4260,27 +1713,54 @@ var NetworkManager = (function NetworkManagerClosure() { pendingRequest.expectedStatus = 200; } - xhr.mozResponseType = xhr.responseType = 'arraybuffer'; - - if (args.onProgress) { - xhr.onprogress = args.onProgress; + if (args.onProgressiveData) { + xhr.responseType = 'moz-chunked-arraybuffer'; + if (xhr.responseType === 'moz-chunked-arraybuffer') { + pendingRequest.onProgressiveData = args.onProgressiveData; + pendingRequest.mozChunked = true; + } else { + xhr.responseType = 'arraybuffer'; + } + } else { + xhr.responseType = 'arraybuffer'; } + if (args.onError) { xhr.onerror = function(evt) { args.onError(xhr.status); }; } xhr.onreadystatechange = this.onStateChange.bind(this, xhrId); + xhr.onprogress = this.onProgress.bind(this, xhrId); pendingRequest.onHeadersReceived = args.onHeadersReceived; pendingRequest.onDone = args.onDone; pendingRequest.onError = args.onError; + pendingRequest.onProgress = args.onProgress; xhr.send(null); return xhrId; }, + onProgress: function NetworkManager_onProgress(xhrId, evt) { + var pendingRequest = this.pendingRequests[xhrId]; + if (!pendingRequest) { + // Maybe abortRequest was called... + return; + } + + if (pendingRequest.mozChunked) { + var chunk = getArrayBuffer(pendingRequest.xhr); + pendingRequest.onProgressiveData(chunk); + } + + var onProgress = pendingRequest.onProgress; + if (onProgress) { + onProgress(evt); + } + }, + onStateChange: function NetworkManager_onStateChange(xhrId, evt) { var pendingRequest = this.pendingRequests[xhrId]; if (!pendingRequest) { @@ -4307,7 +1787,7 @@ var NetworkManager = (function NetworkManagerClosure() { delete this.pendingRequests[xhrId]; // success status == 0 can be on ftp, file and other protocols - if (xhr.status === 0 && /^https?:/i.test(this.url)) { + if (xhr.status === 0 && this.isHttp) { if (pendingRequest.onError) { pendingRequest.onError(xhr.status); } @@ -4341,6 +1821,8 @@ var NetworkManager = (function NetworkManagerClosure() { begin: begin, chunk: chunk }); + } else if (pendingRequest.onProgressiveData) { + pendingRequest.onDone(null); } else { pendingRequest.onDone({ begin: 0, @@ -4360,6 +1842,10 @@ var NetworkManager = (function NetworkManagerClosure() { return this.pendingRequests[xhrId].xhr; }, + isStreamingRequest: function NetworkManager_isStreamingRequest(xhrId) { + return !!(this.pendingRequests[xhrId].onProgressiveData); + }, + isPendingRequest: function NetworkManager_isPendingRequest(xhrId) { return xhrId in this.pendingRequests; }, @@ -4397,7 +1883,8 @@ var ChunkedStream = (function ChunkedStreamClosure() { this.numChunksLoaded = 0; this.numChunks = Math.ceil(length / chunkSize); this.manager = manager; - this.initialDataLength = 0; + this.progressiveDataLength = 0; + this.lastSuccessfulEnsureByteChunk = -1; // a single-entry cache } // required methods for a stream. if a particular stream does not @@ -4407,7 +1894,7 @@ var ChunkedStream = (function ChunkedStreamClosure() { getMissingChunks: function ChunkedStream_getMissingChunks() { var chunks = []; for (var chunk = 0, n = this.numChunks; chunk < n; ++chunk) { - if (!(chunk in this.loadedChunks)) { + if (!this.loadedChunks[chunk]) { chunks.push(chunk); } } @@ -4422,7 +1909,7 @@ var ChunkedStream = (function ChunkedStreamClosure() { return this.numChunksLoaded === this.numChunks; }, - onReceiveData: function(begin, chunk) { + onReceiveData: function ChunkedStream_onReceiveData(begin, chunk) { var end = begin + chunk.byteLength; assert(begin % this.chunkSize === 0, 'Bad begin offset: ' + begin); @@ -4430,38 +1917,59 @@ var ChunkedStream = (function ChunkedStreamClosure() { // See ChunkedStream.moveStart() var length = this.bytes.length; assert(end % this.chunkSize === 0 || end === length, - 'Bad end offset: ' + end); + 'Bad end offset: ' + end); this.bytes.set(new Uint8Array(chunk), begin); var chunkSize = this.chunkSize; var beginChunk = Math.floor(begin / chunkSize); var endChunk = Math.floor((end - 1) / chunkSize) + 1; + var curChunk; - for (var chunk = beginChunk; chunk < endChunk; ++chunk) { - if (!(chunk in this.loadedChunks)) { - this.loadedChunks[chunk] = true; + for (curChunk = beginChunk; curChunk < endChunk; ++curChunk) { + if (!this.loadedChunks[curChunk]) { + this.loadedChunks[curChunk] = true; ++this.numChunksLoaded; } } }, - onReceiveInitialData: function (data) { - this.bytes.set(data); - this.initialDataLength = data.length; - var endChunk = this.end === data.length ? - this.numChunks : Math.floor(data.length / this.chunkSize); - for (var i = 0; i < endChunk; i++) { - this.loadedChunks[i] = true; - ++this.numChunksLoaded; + onReceiveProgressiveData: + function ChunkedStream_onReceiveProgressiveData(data) { + var position = this.progressiveDataLength; + var beginChunk = Math.floor(position / this.chunkSize); + + this.bytes.set(new Uint8Array(data), position); + position += data.byteLength; + this.progressiveDataLength = position; + var endChunk = position >= this.end ? this.numChunks : + Math.floor(position / this.chunkSize); + var curChunk; + for (curChunk = beginChunk; curChunk < endChunk; ++curChunk) { + if (!this.loadedChunks[curChunk]) { + this.loadedChunks[curChunk] = true; + ++this.numChunksLoaded; + } } }, + ensureByte: function ChunkedStream_ensureByte(pos) { + var chunk = Math.floor(pos / this.chunkSize); + if (chunk === this.lastSuccessfulEnsureByteChunk) { + return; + } + + if (!this.loadedChunks[chunk]) { + throw new MissingDataException(pos, pos + 1); + } + this.lastSuccessfulEnsureByteChunk = chunk; + }, + ensureRange: function ChunkedStream_ensureRange(begin, end) { if (begin >= end) { return; } - if (end <= this.initialDataLength) { + if (end <= this.progressiveDataLength) { return; } @@ -4469,21 +1977,22 @@ var ChunkedStream = (function ChunkedStreamClosure() { var beginChunk = Math.floor(begin / chunkSize); var endChunk = Math.floor((end - 1) / chunkSize) + 1; for (var chunk = beginChunk; chunk < endChunk; ++chunk) { - if (!(chunk in this.loadedChunks)) { + if (!this.loadedChunks[chunk]) { throw new MissingDataException(begin, end); } } }, nextEmptyChunk: function ChunkedStream_nextEmptyChunk(beginChunk) { - for (var chunk = beginChunk, n = this.numChunks; chunk < n; ++chunk) { - if (!(chunk in this.loadedChunks)) { + var chunk, n; + for (chunk = beginChunk, n = this.numChunks; chunk < n; ++chunk) { + if (!this.loadedChunks[chunk]) { return chunk; } } // Wrap around to beginning - for (var chunk = 0; chunk < beginChunk; ++chunk) { - if (!(chunk in this.loadedChunks)) { + for (chunk = 0; chunk < beginChunk; ++chunk) { + if (!this.loadedChunks[chunk]) { return chunk; } } @@ -4491,22 +2000,40 @@ var ChunkedStream = (function ChunkedStreamClosure() { }, hasChunk: function ChunkedStream_hasChunk(chunk) { - return chunk in this.loadedChunks; + return !!this.loadedChunks[chunk]; }, get length() { return this.end - this.start; }, + get isEmpty() { + return this.length === 0; + }, + getByte: function ChunkedStream_getByte() { var pos = this.pos; if (pos >= this.end) { return -1; } - this.ensureRange(pos, pos + 1); + this.ensureByte(pos); return this.bytes[this.pos++]; }, + getUint16: function ChunkedStream_getUint16() { + var b0 = this.getByte(); + var b1 = this.getByte(); + return (b0 << 8) + b1; + }, + + getInt32: function ChunkedStream_getInt32() { + var b0 = this.getByte(); + var b1 = this.getByte(); + var b2 = this.getByte(); + var b3 = this.getByte(); + return (b0 << 24) + (b1 << 16) + (b2 << 8) + b3; + }, + // returns subarray of original buffer // should only be read getBytes: function ChunkedStream_getBytes(length) { @@ -4520,14 +2047,21 @@ var ChunkedStream = (function ChunkedStreamClosure() { } var end = pos + length; - if (end > strEnd) + if (end > strEnd) { end = strEnd; + } this.ensureRange(pos, end); this.pos = end; return bytes.subarray(pos, end); }, + peekByte: function ChunkedStream_peekByte() { + var peekedByte = this.getByte(); + this.pos--; + return peekedByte; + }, + peekBytes: function ChunkedStream_peekBytes(length) { var bytes = this.getBytes(length); this.pos -= bytes.length; @@ -4540,8 +2074,9 @@ var ChunkedStream = (function ChunkedStreamClosure() { }, skip: function ChunkedStream_skip(n) { - if (!n) + if (!n) { n = 1; + } this.pos += n; }, @@ -4554,6 +2089,8 @@ var ChunkedStream = (function ChunkedStreamClosure() { }, makeSubStream: function ChunkedStream_makeSubStream(start, length, dict) { + this.ensureRange(start, start + length); + function ChunkedStreamSubstream() {} ChunkedStreamSubstream.prototype = Object.create(this); ChunkedStreamSubstream.prototype.getMissingChunks = function() { @@ -4562,7 +2099,7 @@ var ChunkedStream = (function ChunkedStreamClosure() { var endChunk = Math.floor((this.end - 1) / chunkSize) + 1; var missingChunks = []; for (var chunk = beginChunk; chunk < endChunk; ++chunk) { - if (!(chunk in this.loadedChunks)) { + if (!this.loadedChunks[chunk]) { missingChunks.push(chunk); } } @@ -4584,7 +2121,6 @@ var ChunkedStream = (function ChunkedStreamClosure() { var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { function ChunkedStreamManager(length, chunkSize, url, args) { - var self = this; this.stream = new ChunkedStream(length, chunkSize, this); this.length = length; this.chunkSize = chunkSize; @@ -4625,29 +2161,18 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { this.chunksNeededByRequest = {}; this.requestsByChunk = {}; this.callbacksByRequest = {}; + this.progressiveDataLength = 0; + + this._loadedStreamCapability = createPromiseCapability(); - this.loadedStream = new LegacyPromise(); if (args.initialData) { - this.setInitialData(args.initialData); + this.onReceiveData({chunk: args.initialData}); } } ChunkedStreamManager.prototype = { - - setInitialData: function ChunkedStreamManager_setInitialData(data) { - this.stream.onReceiveInitialData(data); - if (this.stream.allChunksLoaded()) { - this.loadedStream.resolve(this.stream); - } else if (this.msgHandler) { - this.msgHandler.send('DocProgress', { - loaded: data.length, - total: this.length - }); - } - }, - onLoadedStream: function ChunkedStreamManager_getLoadedStream() { - return this.loadedStream; + return this._loadedStreamCapability.promise; }, // Get all the chunks that are not yet loaded and groups them into @@ -4655,7 +2180,7 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { requestAllChunks: function ChunkedStreamManager_requestAllChunks() { var missingChunks = this.stream.getMissingChunks(); this.requestChunks(missingChunks); - return this.loadedStream; + return this._loadedStreamCapability.promise; }, requestChunks: function ChunkedStreamManager_requestChunks(chunks, @@ -4663,8 +2188,9 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { var requestId = this.currRequestId++; var chunksNeeded; + var i, ii; this.chunksNeededByRequest[requestId] = chunksNeeded = {}; - for (var i = 0, ii = chunks.length; i < ii; i++) { + for (i = 0, ii = chunks.length; i < ii; i++) { if (!this.stream.hasChunk(chunks[i])) { chunksNeeded[chunks[i]] = true; } @@ -4695,7 +2221,7 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { var groupedChunksToRequest = this.groupChunks(chunksToRequest); - for (var i = 0; i < groupedChunksToRequest.length; ++i) { + for (i = 0; i < groupedChunksToRequest.length; ++i) { var groupedChunk = groupedChunksToRequest[i]; var begin = groupedChunk.beginChunk * this.chunkSize; var end = Math.min(groupedChunk.endChunk * this.chunkSize, this.length); @@ -4757,13 +2283,13 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { } if (prevChunk >= 0 && prevChunk + 1 !== chunk) { - groupedChunks.push({ - beginChunk: beginChunk, endChunk: prevChunk + 1}); + groupedChunks.push({ beginChunk: beginChunk, + endChunk: prevChunk + 1 }); beginChunk = chunk; } if (i + 1 === chunks.length) { - groupedChunks.push({ - beginChunk: beginChunk, endChunk: chunk + 1}); + groupedChunks.push({ beginChunk: beginChunk, + endChunk: chunk + 1 }); } prevChunk = chunk; @@ -4772,8 +2298,8 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { }, onProgress: function ChunkedStreamManager_onProgress(args) { - var bytesLoaded = this.stream.numChunksLoaded * this.chunkSize + - args.loaded; + var bytesLoaded = (this.stream.numChunksLoaded * this.chunkSize + + args.loaded); this.msgHandler.send('DocProgress', { loaded: bytesLoaded, total: this.length @@ -4782,26 +2308,34 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { onReceiveData: function ChunkedStreamManager_onReceiveData(args) { var chunk = args.chunk; - var begin = args.begin; + var isProgressive = args.begin === undefined; + var begin = isProgressive ? this.progressiveDataLength : args.begin; var end = begin + chunk.byteLength; - var beginChunk = this.getBeginChunk(begin); - var endChunk = this.getEndChunk(end); + var beginChunk = Math.floor(begin / this.chunkSize); + var endChunk = end < this.length ? Math.floor(end / this.chunkSize) : + Math.ceil(end / this.chunkSize); + + if (isProgressive) { + this.stream.onReceiveProgressiveData(chunk); + this.progressiveDataLength = end; + } else { + this.stream.onReceiveData(begin, chunk); + } - this.stream.onReceiveData(begin, chunk); if (this.stream.allChunksLoaded()) { - this.loadedStream.resolve(this.stream); + this._loadedStreamCapability.resolve(this.stream); } var loadedRequests = []; - for (var chunk = beginChunk; chunk < endChunk; ++chunk) { - + var i, requestId; + for (chunk = beginChunk; chunk < endChunk; ++chunk) { // The server might return more chunks than requested var requestIds = this.requestsByChunk[chunk] || []; delete this.requestsByChunk[chunk]; - for (var i = 0; i < requestIds.length; ++i) { - var requestId = requestIds[i]; + for (i = 0; i < requestIds.length; ++i) { + requestId = requestIds[i]; var chunksNeeded = this.chunksNeededByRequest[requestId]; if (chunk in chunksNeeded) { delete chunksNeeded[chunk]; @@ -4835,8 +2369,8 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { } } - for (var i = 0; i < loadedRequests.length; ++i) { - var requestId = loadedRequests[i]; + for (i = 0; i < loadedRequests.length; ++i) { + requestId = loadedRequests[i]; var callback = this.callbacksByRequest[requestId]; delete this.callbacksByRequest[requestId]; if (callback) { @@ -4850,6 +2384,10 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { }); }, + onError: function ChunkedStreamManager_onError(err) { + this._loadedStreamCapability.reject(err); + }, + getBeginChunk: function ChunkedStreamManager_getBeginChunk(begin) { var chunk = Math.floor(begin / this.chunkSize); return chunk; @@ -4875,6 +2413,9 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { +// The maximum number of bytes fetched per range request +var RANGE_CHUNK_SIZE = 65536; + // TODO(mack): Make use of PDFJS.Util.inherit() when it becomes available var BasePdfManager = (function BasePdfManagerClosure() { function BasePdfManager() { @@ -4886,24 +2427,24 @@ var BasePdfManager = (function BasePdfManagerClosure() { throw new NotImplementedException(); }, - ensureModel: function BasePdfManager_ensureModel(prop, args) { - return this.ensure(this.pdfModel, prop, args); + ensureDoc: function BasePdfManager_ensureDoc(prop, args) { + return this.ensure(this.pdfDocument, prop, args); }, ensureXRef: function BasePdfManager_ensureXRef(prop, args) { - return this.ensure(this.pdfModel.xref, prop, args); + return this.ensure(this.pdfDocument.xref, prop, args); }, ensureCatalog: function BasePdfManager_ensureCatalog(prop, args) { - return this.ensure(this.pdfModel.catalog, prop, args); + return this.ensure(this.pdfDocument.catalog, prop, args); }, getPage: function BasePdfManager_pagePage(pageIndex) { - return this.pdfModel.getPage(pageIndex); + return this.pdfDocument.getPage(pageIndex); }, cleanup: function BasePdfManager_cleanup() { - return this.pdfModel.cleanup(); + return this.pdfDocument.cleanup(); }, ensure: function BasePdfManager_ensure(obj, prop, args) { @@ -4918,13 +2459,22 @@ var BasePdfManager = (function BasePdfManagerClosure() { return new NotImplementedException(); }, + sendProgressiveData: function BasePdfManager_sendProgressiveData(chunk) { + return new NotImplementedException(); + }, + updatePassword: function BasePdfManager_updatePassword(password) { - this.pdfModel.xref.password = this.password = password; - if (this.passwordChangedPromise) { - this.passwordChangedPromise.resolve(); + this.pdfDocument.xref.password = this.password = password; + if (this._passwordChangedCapability) { + this._passwordChangedCapability.resolve(); } }, + passwordChanged: function BasePdfManager_passwordChanged() { + this._passwordChangedCapability = createPromiseCapability(); + return this._passwordChangedCapability.promise; + }, + terminate: function BasePdfManager_terminate() { return new NotImplementedException(); } @@ -4936,9 +2486,9 @@ var BasePdfManager = (function BasePdfManagerClosure() { var LocalPdfManager = (function LocalPdfManagerClosure() { function LocalPdfManager(data, password) { var stream = new Stream(data); - this.pdfModel = new PDFDocument(this, stream, password); - this.loadedStream = new LegacyPromise(); - this.loadedStream.resolve(stream); + this.pdfDocument = new PDFDocument(this, stream, password); + this._loadedStreamCapability = createPromiseCapability(); + this._loadedStreamCapability.resolve(stream); } LocalPdfManager.prototype = Object.create(BasePdfManager.prototype); @@ -4946,28 +2496,25 @@ var LocalPdfManager = (function LocalPdfManagerClosure() { LocalPdfManager.prototype.ensure = function LocalPdfManager_ensure(obj, prop, args) { - var promise = new LegacyPromise(); - try { - var value = obj[prop]; - var result; - if (typeof(value) === 'function') { - result = value.apply(obj, args); - } else { - result = value; + return new Promise(function (resolve, reject) { + try { + var value = obj[prop]; + var result; + if (typeof value === 'function') { + result = value.apply(obj, args); + } else { + result = value; + } + resolve(result); + } catch (e) { + reject(e); } - promise.resolve(result); - } catch (e) { - console.log(e.stack); - promise.reject(e); - } - return promise; + }); }; LocalPdfManager.prototype.requestRange = function LocalPdfManager_requestRange(begin, end) { - var promise = new LegacyPromise(); - promise.resolve(); - return promise; + return Promise.resolve(); }; LocalPdfManager.prototype.requestLoadedStream = @@ -4976,7 +2523,7 @@ var LocalPdfManager = (function LocalPdfManagerClosure() { LocalPdfManager.prototype.onLoadedStream = function LocalPdfManager_getLoadedStream() { - return this.loadedStream; + return this._loadedStreamCapability.promise; }; LocalPdfManager.prototype.terminate = @@ -4988,9 +2535,6 @@ var LocalPdfManager = (function LocalPdfManagerClosure() { })(); var NetworkPdfManager = (function NetworkPdfManagerClosure() { - - var CHUNK_SIZE = 65536; - function NetworkPdfManager(args, msgHandler) { this.msgHandler = msgHandler; @@ -5003,10 +2547,10 @@ var NetworkPdfManager = (function NetworkPdfManagerClosure() { disableAutoFetch: args.disableAutoFetch, initialData: args.initialData }; - this.streamManager = new ChunkedStreamManager(args.length, CHUNK_SIZE, + this.streamManager = new ChunkedStreamManager(args.length, RANGE_CHUNK_SIZE, args.url, params); - this.pdfModel = new PDFDocument(this, this.streamManager.getStream(), + this.pdfDocument = new PDFDocument(this, this.streamManager.getStream(), args.password); } @@ -5015,42 +2559,39 @@ var NetworkPdfManager = (function NetworkPdfManagerClosure() { NetworkPdfManager.prototype.ensure = function NetworkPdfManager_ensure(obj, prop, args) { - var promise = new LegacyPromise(); - this.ensureHelper(promise, obj, prop, args); - return promise; - }; + var pdfManager = this; - NetworkPdfManager.prototype.ensureHelper = - function NetworkPdfManager_ensureHelper(promise, obj, prop, args) { - try { - var result; - var value = obj[prop]; - if (typeof(value) === 'function') { - result = value.apply(obj, args); - } else { - result = value; - } - promise.resolve(result); - } catch(e) { - if (!(e instanceof MissingDataException)) { - console.log(e.stack); - promise.reject(e); - return; + return new Promise(function (resolve, reject) { + function ensureHelper() { + try { + var result; + var value = obj[prop]; + if (typeof value === 'function') { + result = value.apply(obj, args); + } else { + result = value; + } + resolve(result); + } catch(e) { + if (!(e instanceof MissingDataException)) { + reject(e); + return; + } + pdfManager.streamManager.requestRange(e.begin, e.end, ensureHelper); + } } - this.streamManager.requestRange(e.begin, e.end, function() { - this.ensureHelper(promise, obj, prop, args); - }.bind(this)); - } + ensureHelper(); + }); }; NetworkPdfManager.prototype.requestRange = function NetworkPdfManager_requestRange(begin, end) { - var promise = new LegacyPromise(); - this.streamManager.requestRange(begin, end, function() { - promise.resolve(); - }); - return promise; + return new Promise(function (resolve) { + this.streamManager.requestRange(begin, end, function() { + resolve(); + }); + }.bind(this)); }; NetworkPdfManager.prototype.requestLoadedStream = @@ -5058,6 +2599,11 @@ var NetworkPdfManager = (function NetworkPdfManagerClosure() { this.streamManager.requestAllChunks(); }; + NetworkPdfManager.prototype.sendProgressiveData = + function NetworkPdfManager_sendProgressiveData(chunk) { + this.streamManager.onReceiveData({ chunk: chunk }); + }; + NetworkPdfManager.prototype.onLoadedStream = function NetworkPdfManager_getLoadedStream() { return this.streamManager.onLoadedStream(); @@ -5075,6 +2621,8 @@ var NetworkPdfManager = (function NetworkPdfManagerClosure() { var Page = (function PageClosure() { + var LETTER_SIZE_MEDIABOX = [0, 0, 612, 792]; + function Page(pdfManager, xref, pageIndex, pageDict, ref, fontCache) { this.pdfManager = pdfManager; this.pageIndex = pageIndex; @@ -5092,51 +2640,69 @@ var Page = (function PageClosure() { getPageProp: function Page_getPageProp(key) { return this.pageDict.get(key); }, - inheritPageProp: function Page_inheritPageProp(key) { + + getInheritedPageProp: function Page_inheritPageProp(key) { var dict = this.pageDict; - var obj = dict.get(key); - while (obj === undefined) { + var value = dict.get(key); + while (value === undefined) { dict = dict.get('Parent'); - if (!dict) + if (!dict) { break; - obj = dict.get(key); + } + value = dict.get(key); } - return obj; + return value; }, + get content() { return this.getPageProp('Contents'); }, + get resources() { - return shadow(this, 'resources', this.inheritPageProp('Resources')); + var value = this.getInheritedPageProp('Resources'); + // For robustness: The spec states that a \Resources entry has to be + // present, but can be empty. Some document omit it still. In this case + // return an empty dictionary: + if (value === undefined) { + value = Dict.empty; + } + return shadow(this, 'resources', value); }, + get mediaBox() { - var obj = this.inheritPageProp('MediaBox'); + var obj = this.getInheritedPageProp('MediaBox'); // Reset invalid media box to letter size. - if (!isArray(obj) || obj.length !== 4) - obj = [0, 0, 612, 792]; + if (!isArray(obj) || obj.length !== 4) { + obj = LETTER_SIZE_MEDIABOX; + } return shadow(this, 'mediaBox', obj); }, + get view() { var mediaBox = this.mediaBox; - var cropBox = this.inheritPageProp('CropBox'); - if (!isArray(cropBox) || cropBox.length !== 4) + var cropBox = this.getInheritedPageProp('CropBox'); + if (!isArray(cropBox) || cropBox.length !== 4) { return shadow(this, 'view', mediaBox); + } // From the spec, 6th ed., p.963: // "The crop, bleed, trim, and art boxes should not ordinarily // extend beyond the boundaries of the media box. If they do, they are // effectively reduced to their intersection with the media box." cropBox = Util.intersect(cropBox, mediaBox); - if (!cropBox) + if (!cropBox) { return shadow(this, 'view', mediaBox); - + } return shadow(this, 'view', cropBox); }, + get annotationRefs() { - return shadow(this, 'annotationRefs', this.inheritPageProp('Annots')); + return shadow(this, 'annotationRefs', + this.getInheritedPageProp('Annots')); }, + get rotate() { - var rotate = this.inheritPageProp('Rotate') || 0; + var rotate = this.getInheritedPageProp('Rotate') || 0; // Normalize rotation so it's a multiple of 90 and between 0 and 270 if (rotate % 90 !== 0) { rotate = 0; @@ -5149,6 +2715,7 @@ var Page = (function PageClosure() { } return shadow(this, 'rotate', rotate); }, + getContentStream: function Page_getContentStream() { var content = this.content; var stream; @@ -5157,8 +2724,9 @@ var Page = (function PageClosure() { var xref = this.xref; var i, n = content.length; var streams = []; - for (i = 0; i < n; ++i) + for (i = 0; i < n; ++i) { streams.push(xref.fetchIfRef(content[i])); + } stream = new StreamsSequenceStream(streams); } else if (isStream(content)) { stream = content; @@ -5168,31 +2736,22 @@ var Page = (function PageClosure() { } return stream; }, - loadResources: function(keys) { + + loadResources: function Page_loadResources(keys) { if (!this.resourcesPromise) { - // TODO: add async inheritPageProp and remove this. + // TODO: add async getInheritedPageProp and remove this. this.resourcesPromise = this.pdfManager.ensure(this, 'resources'); } - var promise = new LegacyPromise(); - this.resourcesPromise.then(function resourceSuccess() { + return this.resourcesPromise.then(function resourceSuccess() { var objectLoader = new ObjectLoader(this.resources.map, keys, this.xref); - objectLoader.load().then(function objectLoaderSuccess() { - promise.resolve(); - }); + return objectLoader.load(); }.bind(this)); - return promise; }, - getOperatorList: function Page_getOperatorList(handler) { + + getOperatorList: function Page_getOperatorList(handler, intent) { var self = this; - var promise = new LegacyPromise(); - - function reject(e) { - promise.reject(e); - } - - var pageListPromise = new LegacyPromise(); var pdfManager = this.pdfManager; var contentStreamPromise = pdfManager.ensure(this, 'getContentStream', @@ -5203,53 +2762,53 @@ var Page = (function PageClosure() { 'Pattern', 'Shading', 'XObject', - 'Font', + 'Font' // ProcSet // Properties ]); - var partialEvaluator = new PartialEvaluator( - pdfManager, this.xref, handler, - this.pageIndex, 'p' + this.pageIndex + '_', - this.idCounters, this.fontCache); + var partialEvaluator = new PartialEvaluator(pdfManager, this.xref, + handler, this.pageIndex, + 'p' + this.pageIndex + '_', + this.idCounters, + this.fontCache); - var dataPromises = Promise.all( - [contentStreamPromise, resourcesPromise], reject); - dataPromises.then(function(data) { + var dataPromises = Promise.all([contentStreamPromise, resourcesPromise]); + var pageListPromise = dataPromises.then(function(data) { var contentStream = data[0]; - - - var opList = new OperatorList(handler, self.pageIndex); + var opList = new OperatorList(intent, handler, self.pageIndex); handler.send('StartRenderPage', { transparency: partialEvaluator.hasBlendModes(self.resources), - pageIndex: self.pageIndex + pageIndex: self.pageIndex, + intent: intent }); - partialEvaluator.getOperatorList(contentStream, self.resources, opList); - pageListPromise.resolve(opList); + return partialEvaluator.getOperatorList(contentStream, self.resources, + opList).then(function () { + return opList; + }); }); var annotationsPromise = pdfManager.ensure(this, 'annotations'); - Promise.all([pageListPromise, annotationsPromise]).then(function(datas) { + return Promise.all([pageListPromise, annotationsPromise]).then( + function(datas) { var pageOpList = datas[0]; var annotations = datas[1]; if (annotations.length === 0) { pageOpList.flush(true); - promise.resolve(pageOpList); - return; + return pageOpList; } var annotationsReadyPromise = Annotation.appendToOperatorList( - annotations, pageOpList, pdfManager, partialEvaluator); - annotationsReadyPromise.then(function () { + annotations, pageOpList, pdfManager, partialEvaluator, intent); + return annotationsReadyPromise.then(function () { pageOpList.flush(true); - promise.resolve(pageOpList); - }, reject); - }, reject); - - return promise; + return pageOpList; + }); + }); }, + extractTextContent: function Page_extractTextContent() { var handler = { on: function nullHandlerOn() {}, @@ -5258,8 +2817,6 @@ var Page = (function PageClosure() { var self = this; - var textContentPromise = new LegacyPromise(); - var pdfManager = this.pdfManager; var contentStreamPromise = pdfManager.ensure(this, 'getContentStream', []); @@ -5272,19 +2829,17 @@ var Page = (function PageClosure() { var dataPromises = Promise.all([contentStreamPromise, resourcesPromise]); - dataPromises.then(function(data) { + return dataPromises.then(function(data) { var contentStream = data[0]; - var partialEvaluator = new PartialEvaluator( - pdfManager, self.xref, handler, - self.pageIndex, 'p' + self.pageIndex + '_', - self.idCounters, self.fontCache); + var partialEvaluator = new PartialEvaluator(pdfManager, self.xref, + handler, self.pageIndex, + 'p' + self.pageIndex + '_', + self.idCounters, + self.fontCache); - var bidiTexts = partialEvaluator.getTextContent(contentStream, - self.resources); - textContentPromise.resolve(bidiTexts); + return partialEvaluator.getTextContent(contentStream, + self.resources); }); - - return textContentPromise; }, getAnnotationsData: function Page_getAnnotationsData() { @@ -5298,7 +2853,7 @@ var Page = (function PageClosure() { get annotations() { var annotations = []; - var annotationRefs = this.annotationRefs || []; + var annotationRefs = (this.annotationRefs || []); for (var i = 0, n = annotationRefs.length; i < n; ++i) { var annotationRef = annotationRefs[i]; var annotation = Annotation.fromRef(this.xref, annotationRef); @@ -5322,16 +2877,17 @@ var Page = (function PageClosure() { */ var PDFDocument = (function PDFDocumentClosure() { function PDFDocument(pdfManager, arg, password) { - if (isStream(arg)) + if (isStream(arg)) { init.call(this, pdfManager, arg, password); - else if (isArrayBuffer(arg)) + } else if (isArrayBuffer(arg)) { init.call(this, pdfManager, new Stream(arg), password); - else + } else { error('PDFDocument: Unknown argument type'); + } } function init(pdfManager, stream, password) { - assertWellFormed(stream.length > 0, 'stream must have data'); + assert(stream.length > 0, 'stream must have data'); this.pdfManager = pdfManager; this.stream = stream; var xref = new XRef(this.stream, password, pdfManager); @@ -5341,15 +2897,19 @@ var PDFDocument = (function PDFDocumentClosure() { function find(stream, needle, limit, backwards) { var pos = stream.pos; var end = stream.end; - var str = ''; - if (pos + limit > end) + var strBuf = []; + if (pos + limit > end) { limit = end - pos; - for (var n = 0; n < limit; ++n) - str += String.fromCharCode(stream.getByte()); + } + for (var n = 0; n < limit; ++n) { + strBuf.push(String.fromCharCode(stream.getByte())); + } + var str = strBuf.join(''); stream.pos = pos; var index = backwards ? str.lastIndexOf(needle) : str.indexOf(needle); - if (index == -1) + if (index === -1) { return false; /* not found */ + } stream.pos += index; return true; /* found */ } @@ -5394,22 +2954,15 @@ var PDFDocument = (function PDFDocumentClosure() { }, get linearization() { - var length = this.stream.length; - var linearization = false; - if (length) { + var linearization = null; + if (this.stream.length) { try { - linearization = new Linearization(this.stream); - if (linearization.length != length) { - linearization = false; - } + linearization = Linearization.create(this.stream); } catch (err) { if (err instanceof MissingDataException) { throw err; } - - info('The linearization data is not available ' + - 'or unreadable PDF data is found'); - linearization = false; + info(err); } } // shadow the prototype getter with a data property @@ -5422,16 +2975,18 @@ var PDFDocument = (function PDFDocumentClosure() { if (linearization) { // Find end of first obj. stream.reset(); - if (find(stream, 'endobj', 1024)) + if (find(stream, 'endobj', 1024)) { startXRef = stream.pos + 6; + } } else { // Find startxref by jumping backward from the end of the file. var step = 1024; var found = false, pos = stream.end; while (!found && pos > 0) { pos -= step - 'startxref'.length; - if (pos < 0) + if (pos < 0) { pos = 0; + } stream.pos = pos; found = find(stream, 'startxref', step, true); } @@ -5447,8 +3002,9 @@ var PDFDocument = (function PDFDocumentClosure() { ch = stream.getByte(); } startXRef = parseInt(str, 10); - if (isNaN(startXRef)) + if (isNaN(startXRef)) { startXRef = 0; + } } } // shadow the prototype getter with a data property @@ -5457,8 +3013,9 @@ var PDFDocument = (function PDFDocumentClosure() { get mainXRefEntriesOffset() { var mainXRefEntriesOffset = 0; var linearization = this.linearization; - if (linearization) + if (linearization) { mainXRefEntriesOffset = linearization.mainXRefEntriesOffset; + } // shadow the prototype getter with a data property return shadow(this, 'mainXRefEntriesOffset', mainXRefEntriesOffset); }, @@ -5519,8 +3076,8 @@ var PDFDocument = (function PDFDocumentClosure() { var value = infoDict.get(key); // Make sure the value conforms to the spec. if (validEntries[key](value)) { - docInfo[key] = typeof value !== 'string' ? value : - stringToPDFString(value); + docInfo[key] = (typeof value !== 'string' ? + value : stringToPDFString(value)); } else { info('Bad value in document info for "' + key + '"'); } @@ -5566,6 +3123,13 @@ var Name = (function NameClosure() { Name.prototype = {}; + var nameCache = {}; + + Name.get = function Name_get(name) { + var nameValue = nameCache[name]; + return (nameValue ? nameValue : (nameCache[name] = new Name(name))); + }; + return Name; })(); @@ -5580,10 +3144,7 @@ var Cmd = (function CmdClosure() { Cmd.get = function Cmd_get(cmd) { var cmdValue = cmdCache[cmd]; - if (cmdValue) - return cmdValue; - - return cmdCache[cmd] = new Cmd(cmd); + return (cmdValue ? cmdValue : (cmdCache[cmd] = new Cmd(cmd))); }; return Cmd; @@ -5594,11 +3155,30 @@ var Dict = (function DictClosure() { return nonSerializable; // creating closure on some variable }; + var GETALL_DICTIONARY_TYPES_WHITELIST = { + 'Background': true, + 'ExtGState': true, + 'Halftone': true, + 'Layout': true, + 'Mask': true, + 'Pagination': true, + 'Printing': true + }; + + function isRecursionAllowedFor(dict) { + if (!isName(dict.Type)) { + return true; + } + var dictType = dict.Type.name; + return GETALL_DICTIONARY_TYPES_WHITELIST[dictType] === true; + } + // xref is optional function Dict(xref) { // Map should only be used internally, use functions below to access. this.map = Object.create(null); this.xref = xref; + this.objId = null; this.__nonSerializable__ = nonSerializable; // disable cloning of the Dict } @@ -5611,12 +3191,12 @@ var Dict = (function DictClosure() { get: function Dict_get(key1, key2, key3) { var value; var xref = this.xref; - if (typeof (value = this.map[key1]) != 'undefined' || key1 in this.map || - typeof key2 == 'undefined') { + if (typeof (value = this.map[key1]) !== 'undefined' || key1 in this.map || + typeof key2 === 'undefined') { return xref ? xref.fetchIfRef(value) : value; } - if (typeof (value = this.map[key2]) != 'undefined' || key2 in this.map || - typeof key3 == 'undefined') { + if (typeof (value = this.map[key2]) !== 'undefined' || key2 in this.map || + typeof key3 === 'undefined') { return xref ? xref.fetchIfRef(value) : value; } value = this.map[key3] || null; @@ -5626,33 +3206,26 @@ var Dict = (function DictClosure() { // Same as get(), but returns a promise and uses fetchIfRefAsync(). getAsync: function Dict_getAsync(key1, key2, key3) { var value; - var promise; var xref = this.xref; - if (typeof (value = this.map[key1]) !== undefined || key1 in this.map || - typeof key2 === undefined) { + if (typeof (value = this.map[key1]) !== 'undefined' || key1 in this.map || + typeof key2 === 'undefined') { if (xref) { return xref.fetchIfRefAsync(value); } - promise = new LegacyPromise(); - promise.resolve(value); - return promise; + return Promise.resolve(value); } - if (typeof (value = this.map[key2]) !== undefined || key2 in this.map || - typeof key3 === undefined) { + if (typeof (value = this.map[key2]) !== 'undefined' || key2 in this.map || + typeof key3 === 'undefined') { if (xref) { return xref.fetchIfRefAsync(value); } - promise = new LegacyPromise(); - promise.resolve(value); - return promise; + return Promise.resolve(value); } value = this.map[key3] || null; if (xref) { return xref.fetchIfRefAsync(value); } - promise = new LegacyPromise(); - promise.resolve(value); - return promise; + return Promise.resolve(value); }, // no dereferencing @@ -5662,10 +3235,52 @@ var Dict = (function DictClosure() { // creates new map and dereferences all Refs getAll: function Dict_getAll() { - var all = {}; - for (var key in this.map) { - var obj = this.get(key); - all[key] = obj instanceof Dict ? obj.getAll() : obj; + var all = Object.create(null); + var queue = null; + var key, obj; + for (key in this.map) { + obj = this.get(key); + if (obj instanceof Dict) { + if (isRecursionAllowedFor(obj)) { + (queue || (queue = [])).push({target: all, key: key, obj: obj}); + } else { + all[key] = this.getRaw(key); + } + } else { + all[key] = obj; + } + } + if (!queue) { + return all; + } + + // trying to take cyclic references into the account + var processed = Object.create(null); + while (queue.length > 0) { + var item = queue.shift(); + var itemObj = item.obj; + var objId = itemObj.objId; + if (objId && objId in processed) { + item.target[item.key] = processed[objId]; + continue; + } + var dereferenced = Object.create(null); + for (key in itemObj.map) { + obj = itemObj.get(key); + if (obj instanceof Dict) { + if (isRecursionAllowedFor(obj)) { + queue.push({target: dereferenced, key: key, obj: obj}); + } else { + dereferenced[key] = itemObj.getRaw(key); + } + } else { + dereferenced[key] = obj; + } + } + if (objId) { + processed[objId] = dereferenced; + } + item.target[item.key] = dereferenced; } return all; }, @@ -5685,6 +3300,8 @@ var Dict = (function DictClosure() { } }; + Dict.empty = new Dict(null); + return Dict; })(); @@ -5694,13 +3311,23 @@ var Ref = (function RefClosure() { this.gen = gen; } - Ref.prototype = {}; + Ref.prototype = { + toString: function Ref_toString() { + // This function is hot, so we make the string as compact as possible. + // |this.gen| is almost always zero, so we treat that case specially. + var str = this.num + 'R'; + if (this.gen !== 0) { + str += this.gen; + } + return str; + } + }; return Ref; })(); -// The reference is identified by number and generation, -// this structure stores only one instance of the reference. +// The reference is identified by number and generation. +// This structure stores only one instance of the reference. var RefSet = (function RefSetClosure() { function RefSet() { this.dict = {}; @@ -5708,15 +3335,15 @@ var RefSet = (function RefSetClosure() { RefSet.prototype = { has: function RefSet_has(ref) { - return ('R' + ref.num + '.' + ref.gen) in this.dict; + return ref.toString() in this.dict; }, put: function RefSet_put(ref) { - this.dict['R' + ref.num + '.' + ref.gen] = true; + this.dict[ref.toString()] = true; }, remove: function RefSet_remove(ref) { - delete this.dict['R' + ref.num + '.' + ref.gen]; + delete this.dict[ref.toString()]; } }; @@ -5730,15 +3357,19 @@ var RefSetCache = (function RefSetCacheClosure() { RefSetCache.prototype = { get: function RefSetCache_get(ref) { - return this.dict['R' + ref.num + '.' + ref.gen]; + return this.dict[ref.toString()]; }, has: function RefSetCache_has(ref) { - return ('R' + ref.num + '.' + ref.gen) in this.dict; + return ref.toString() in this.dict; }, put: function RefSetCache_put(ref, obj) { - this.dict['R' + ref.num + '.' + ref.gen] = obj; + this.dict[ref.toString()] = obj; + }, + + putAlias: function RefSetCache_putAlias(ref, aliasRef) { + this.dict[ref.toString()] = this.get(aliasRef); }, forEach: function RefSetCache_forEach(fn, thisArg) { @@ -5761,7 +3392,7 @@ var Catalog = (function CatalogClosure() { this.xref = xref; this.catDict = xref.getCatalogObj(); this.fontCache = new RefSetCache(); - assertWellFormed(isDict(this.catDict), + assert(isDict(this.catDict), 'catalog object is not a dictionary'); this.pagePromises = []; @@ -5770,11 +3401,12 @@ var Catalog = (function CatalogClosure() { Catalog.prototype = { get metadata() { var streamRef = this.catDict.getRaw('Metadata'); - if (!isRef(streamRef)) + if (!isRef(streamRef)) { return shadow(this, 'metadata', null); + } - var encryptMetadata = !this.xref.encrypt ? false : - this.xref.encrypt.encryptMetadata; + var encryptMetadata = (!this.xref.encrypt ? false : + this.xref.encrypt.encryptMetadata); var stream = this.xref.fetch(streamRef, !encryptMetadata); var metadata; @@ -5801,7 +3433,7 @@ var Catalog = (function CatalogClosure() { }, get toplevelPagesDict() { var pagesObj = this.catDict.get('Pages'); - assertWellFormed(isDict(pagesObj), 'invalid top-level pages dictionary'); + assert(isDict(pagesObj), 'invalid top-level pages dictionary'); // shadow the prototype getter return shadow(this, 'toplevelPagesDict', pagesObj); }, @@ -5832,17 +3464,20 @@ var Catalog = (function CatalogClosure() { while (queue.length > 0) { var i = queue.shift(); var outlineDict = xref.fetchIfRef(i.obj); - if (outlineDict === null) + if (outlineDict === null) { continue; - if (!outlineDict.has('Title')) + } + if (!outlineDict.has('Title')) { error('Invalid outline item'); + } var dest = outlineDict.get('A'); - if (dest) + if (dest) { dest = dest.get('D'); - else if (outlineDict.has('Dest')) { + } else if (outlineDict.has('Dest')) { dest = outlineDict.getRaw('Dest'); - if (isName(dest)) + if (isName(dest)) { dest = dest.name; + } } var title = outlineDict.get('Title'); var outlineItem = { @@ -5868,11 +3503,11 @@ var Catalog = (function CatalogClosure() { } } } - return root.items.length > 0 ? root.items : null; + return (root.items.length > 0 ? root.items : null); }, get numPages() { var obj = this.toplevelPagesDict.get('Count'); - assertWellFormed( + assert( isInt(obj), 'page count in top level pages object is not an integer' ); @@ -5887,16 +3522,19 @@ var Catalog = (function CatalogClosure() { var xref = this.xref; var dests = {}, nameTreeRef, nameDictionaryRef; var obj = this.catDict.get('Names'); - if (obj) + if (obj && obj.has('Dests')) { nameTreeRef = obj.getRaw('Dests'); - else if (this.catDict.has('Dests')) + } else if (this.catDict.has('Dests')) { nameDictionaryRef = this.catDict.get('Dests'); + } if (nameDictionaryRef) { // reading simple destination dictionary obj = nameDictionaryRef; obj.forEach(function catalogForEach(key, value) { - if (!value) return; + if (!value) { + return; + } dests[key] = fetchDestination(value); }); } @@ -5912,6 +3550,62 @@ var Catalog = (function CatalogClosure() { } return shadow(this, 'destinations', dests); }, + getDestination: function Catalog_getDestination(destinationId) { + function fetchDestination(dest) { + return isDict(dest) ? dest.get('D') : dest; + } + + var xref = this.xref; + var dest, nameTreeRef, nameDictionaryRef; + var obj = this.catDict.get('Names'); + if (obj && obj.has('Dests')) { + nameTreeRef = obj.getRaw('Dests'); + } else if (this.catDict.has('Dests')) { + nameDictionaryRef = this.catDict.get('Dests'); + } + + if (nameDictionaryRef) { + // reading simple destination dictionary + obj = nameDictionaryRef; + obj.forEach(function catalogForEach(key, value) { + if (!value) { + return; + } + if (key === destinationId) { + dest = fetchDestination(value); + } + }); + } + if (nameTreeRef) { + var nameTree = new NameTree(nameTreeRef, xref); + dest = fetchDestination(nameTree.get(destinationId)); + } + return dest; + }, + get attachments() { + var xref = this.xref; + var attachments = null, nameTreeRef; + var obj = this.catDict.get('Names'); + if (obj) { + nameTreeRef = obj.getRaw('EmbeddedFiles'); + } + + if (nameTreeRef) { + var nameTree = new NameTree(nameTreeRef, xref); + var names = nameTree.getAll(); + for (var name in names) { + if (!names.hasOwnProperty(name)) { + continue; + } + var fs = new FileSpec(names[name], xref); + if (!attachments) { + attachments = {}; + } + attachments[stringToPDFString(name)] = fs.serializable; + } + } + return shadow(this, 'attachments', attachments); + }, get javaScript() { var xref = this.xref; var obj = this.catDict.get('Names'); @@ -5924,7 +3618,7 @@ var Catalog = (function CatalogClosure() { if (!names.hasOwnProperty(name)) { continue; } - // We don't really use the JavaScript right now so this code is + // We don't really use the JavaScript right now. This code is // defensive so we don't cause errors on document load. var jsDict = names[name]; if (!isDict(jsDict)) { @@ -5944,15 +3638,37 @@ var Catalog = (function CatalogClosure() { javaScript.push(stringToPDFString(js)); } } + + // Append OpenAction actions to javaScript array + var openactionDict = this.catDict.get('OpenAction'); + if (isDict(openactionDict)) { + var objType = openactionDict.get('Type'); + var actionType = openactionDict.get('S'); + var action = openactionDict.get('N'); + var isPrintAction = (isName(objType) && objType.name === 'Action' && + isName(actionType) && actionType.name === 'Named' && + isName(action) && action.name === 'Print'); + + if (isPrintAction) { + javaScript.push('print(true);'); + } + } + return shadow(this, 'javaScript', javaScript); }, cleanup: function Catalog_cleanup() { - this.fontCache.forEach(function (font) { - delete font.sent; - delete font.translated; + var promises = []; + this.fontCache.forEach(function (promise) { + promises.push(promise); }); - this.fontCache.clear(); + return Promise.all(promises).then(function (translatedFonts) { + for (var i = 0, ii = translatedFonts.length; i < ii; i++) { + var font = translatedFonts[i].dict; + delete font.translated; + } + this.fontCache.clear(); + }.bind(this)); }, getPage: function Catalog_getPage(pageIndex) { @@ -5970,7 +3686,7 @@ var Catalog = (function CatalogClosure() { }, getPageDict: function Catalog_getPageDict(pageIndex) { - var promise = new LegacyPromise(); + var capability = createPromiseCapability(); var nodesToVisit = [this.catDict.getRaw('Pages')]; var currentPageIndex = 0; var xref = this.xref; @@ -5983,7 +3699,7 @@ var Catalog = (function CatalogClosure() { xref.fetchAsync(currentNode).then(function (obj) { if ((isDict(obj, 'Page') || (isDict(obj) && !obj.has('Kids')))) { if (pageIndex === currentPageIndex) { - promise.resolve([obj, currentNode]); + capability.resolve([obj, currentNode]); } else { currentPageIndex++; next(); @@ -5992,7 +3708,7 @@ var Catalog = (function CatalogClosure() { } nodesToVisit.push(obj); next(); - }.bind(this), promise.reject.bind(promise)); + }, capability.reject); return; } @@ -6027,10 +3743,10 @@ var Catalog = (function CatalogClosure() { } } } - promise.reject('Page index ' + pageIndex + ' not found.'); + capability.reject('Page index ' + pageIndex + ' not found.'); } next(); - return promise; + return capability.promise; }, getPageIndex: function Catalog_getPageIndex(ref) { @@ -6060,8 +3776,8 @@ var Catalog = (function CatalogClosure() { var found = false; for (var i = 0; i < kids.length; i++) { var kid = kids[i]; - assert(isRef(kid), 'kids must be an ref'); - if (kid.num == kidRef.num) { + assert(isRef(kid), 'kids must be a ref'); + if (kid.num === kidRef.num) { found = true; break; } @@ -6105,13 +3821,16 @@ var Catalog = (function CatalogClosure() { var XRef = (function XRefClosure() { function XRef(stream, password) { - this.stream = stream; this.entries = []; this.xrefstms = {}; // prepare the XRef cache this.cache = []; this.password = password; + this.stats = { + streamTypes: [], + fontTypes: [] + }; } XRef.prototype = { @@ -6135,8 +3854,8 @@ var XRef = (function XRefClosure() { if (encrypt) { var ids = trailerDict.get('ID'); var fileId = (ids && ids.length) ? ids[0] : ''; - this.encrypt = new CipherTransformFactory( - encrypt, fileId, this.password); + this.encrypt = new CipherTransformFactory(encrypt, fileId, + this.password); } // get the root dictionary (catalog) object @@ -6160,9 +3879,9 @@ var XRef = (function XRefClosure() { var obj = this.readXRefTable(parser); // Sanity check - if (!isCmd(obj, 'trailer')) + if (!isCmd(obj, 'trailer')) { error('Invalid XRef table: could not find trailer dictionary'); - + } // Read trailer dictionary, e.g. // trailer // << /Size 22 @@ -6173,9 +3892,14 @@ var XRef = (function XRefClosure() { // The parser goes through the entire stream << ... >> and provides // a getter interface for the key-value table var dict = parser.getObj(); - if (!isDict(dict)) - error('Invalid XRef table: could not parse trailer dictionary'); + // The pdflib PDF generator can generate a nested trailer dictionary + if (!isDict(dict) && dict.dict) { + dict = dict.dict; + } + if (!isDict(dict)) { + error('Invalid XRef table: could not parse trailer dictionary'); + } delete this.tableState; return dict; @@ -6212,9 +3936,9 @@ var XRef = (function XRefClosure() { var first = tableState.firstEntryNum; var count = tableState.entryCount; - if (!isInt(first) || !isInt(count)) + if (!isInt(first) || !isInt(count)) { error('Invalid XRef table: wrong types in subsection header'); - + } // Inner loop is over objects themselves for (var i = tableState.entryNum; i < count; i++) { tableState.streamPos = stream.pos; @@ -6227,21 +3951,21 @@ var XRef = (function XRefClosure() { entry.gen = parser.getObj(); var type = parser.getObj(); - if (isCmd(type, 'f')) + if (isCmd(type, 'f')) { entry.free = true; - else if (isCmd(type, 'n')) + } else if (isCmd(type, 'n')) { entry.uncompressed = true; + } // Validate entry obj if (!isInt(entry.offset) || !isInt(entry.gen) || !(entry.free || entry.uncompressed)) { - console.log(entry.offset, entry.gen, entry.free, - entry.uncompressed); error('Invalid entry in XRef subsection: ' + first + ', ' + count); } - if (!this.entries[i + first]) + if (!this.entries[i + first]) { this.entries[i + first] = entry; + } } tableState.entryNum = 0; @@ -6259,9 +3983,9 @@ var XRef = (function XRefClosure() { } // Sanity check: as per spec, first object must be free - if (this.entries[0] && !this.entries[0].free) + if (this.entries[0] && !this.entries[0].free) { error('Invalid XRef table: unexpected first object'); - + } return obj; }, @@ -6301,13 +4025,12 @@ var XRef = (function XRefClosure() { var entryRanges = streamState.entryRanges; while (entryRanges.length > 0) { - var first = entryRanges[0]; var n = entryRanges[1]; - if (!isInt(first) || !isInt(n)) + if (!isInt(first) || !isInt(n)) { error('Invalid XRef range fields: ' + first + ', ' + n); - + } if (!isInt(typeFieldWidth) || !isInt(offsetFieldWidth) || !isInt(generationFieldWidth)) { error('Invalid XRef entry fields length: ' + first + ', ' + n); @@ -6317,15 +4040,19 @@ var XRef = (function XRefClosure() { streamState.streamPos = stream.pos; var type = 0, offset = 0, generation = 0; - for (j = 0; j < typeFieldWidth; ++j) + for (j = 0; j < typeFieldWidth; ++j) { type = (type << 8) | stream.getByte(); - // if type field is absent, its default value = 1 - if (typeFieldWidth === 0) + } + // if type field is absent, its default value is 1 + if (typeFieldWidth === 0) { type = 1; - for (j = 0; j < offsetFieldWidth; ++j) + } + for (j = 0; j < offsetFieldWidth; ++j) { offset = (offset << 8) | stream.getByte(); - for (j = 0; j < generationFieldWidth; ++j) + } + for (j = 0; j < generationFieldWidth; ++j) { generation = (generation << 8) | stream.getByte(); + } var entry = {}; entry.offset = offset; entry.gen = generation; @@ -6341,8 +4068,9 @@ var XRef = (function XRefClosure() { default: error('Invalid XRef entry type: ' + type); } - if (!this.entries[first + i]) + if (!this.entries[first + i]) { this.entries[first + i] = entry; + } } streamState.entryNum = 0; @@ -6350,14 +4078,16 @@ var XRef = (function XRefClosure() { entryRanges.splice(0, 2); } }, + indexObjects: function XRef_indexObjects() { // Simple scan through the PDF content to find objects, // trailers and XRef streams. function readToken(data, offset) { var token = '', ch = data[offset]; while (ch !== 13 && ch !== 10) { - if (++offset >= data.length) + if (++offset >= data.length) { break; + } token += String.fromCharCode(ch); ch = data[offset]; } @@ -6369,11 +4099,12 @@ var XRef = (function XRefClosure() { // finding byte sequence while (offset < dataLength) { var i = 0; - while (i < length && data[offset + i] == what[i]) + while (i < length && data[offset + i] === what[i]) { ++i; - if (i >= length) + } + if (i >= length) { break; // sequence found - + } offset++; skipped++; } @@ -6390,8 +4121,6 @@ var XRef = (function XRefClosure() { var buffer = stream.getBytes(); var position = stream.start, length = buffer.length; var trailers = [], xrefStms = []; - var state = 0; - var currentToken; while (position < length) { var ch = buffer[position]; if (ch === 32 || ch === 9 || ch === 13 || ch === 10) { @@ -6434,32 +4163,38 @@ var XRef = (function XRefClosure() { } position += contentLength; - } else + } else { position += token.length + 1; + } } // reading XRef streams - for (var i = 0, ii = xrefStms.length; i < ii; ++i) { + var i, ii; + for (i = 0, ii = xrefStms.length; i < ii; ++i) { this.startXRefQueue.push(xrefStms[i]); this.readXRef(/* recoveryMode */ true); } // finding main trailer var dict; - for (var i = 0, ii = trailers.length; i < ii; ++i) { + for (i = 0, ii = trailers.length; i < ii; ++i) { stream.pos = trailers[i]; - var parser = new Parser(new Lexer(stream), true, null); + var parser = new Parser(new Lexer(stream), true, this); var obj = parser.getObj(); - if (!isCmd(obj, 'trailer')) + if (!isCmd(obj, 'trailer')) { continue; + } // read the trailer dictionary - if (!isDict(dict = parser.getObj())) + if (!isDict(dict = parser.getObj())) { continue; + } // taking the first one with 'ID' - if (dict.has('ID')) + if (dict.has('ID')) { return dict; + } } // no tailer with 'ID', taking last one (if exists) - if (dict) + if (dict) { return dict; + } // nothing helps // calling error() would reject worker with an UnknownErrorException. throw new InvalidPDFException('Invalid PDF structure'); @@ -6472,15 +4207,14 @@ var XRef = (function XRefClosure() { while (this.startXRefQueue.length) { var startXRef = this.startXRefQueue[0]; - stream.pos = startXRef; + stream.pos = startXRef + stream.start; - var parser = new Parser(new Lexer(stream), true, null); + var parser = new Parser(new Lexer(stream), true, this); var obj = parser.getObj(); var dict; // Get dictionary if (isCmd(obj, 'xref')) { - // Parse end-of-file XRef dict = this.processXRefTable(parser); if (!this.topDict) { @@ -6499,7 +4233,6 @@ var XRef = (function XRefClosure() { } } } else if (isInt(obj)) { - // Parse in-stream XRef if (!isInt(parser.getObj()) || !isCmd(parser.getObj(), 'obj') || @@ -6510,9 +4243,9 @@ var XRef = (function XRefClosure() { if (!this.topDict) { this.topDict = dict; } - - if (!dict) + if (!dict) { error('Failed to read XRef stream'); + } } else { error('Invalid XRef stream header'); } @@ -6538,95 +4271,109 @@ var XRef = (function XRefClosure() { info('(while reading XRef): ' + e); } - if (recoveryMode) + if (recoveryMode) { return; + } throw new XRefParseException(); }, getEntry: function XRef_getEntry(i) { - var e = this.entries[i]; - if (e === null) - return null; - return e.free || !e.offset ? null : e; // returns null if entry is free + var xrefEntry = this.entries[i]; + if (xrefEntry && !xrefEntry.free && xrefEntry.offset) { + return xrefEntry; + } + return null; }, + fetchIfRef: function XRef_fetchIfRef(obj) { - if (!isRef(obj)) + if (!isRef(obj)) { return obj; + } return this.fetch(obj); }, + fetch: function XRef_fetch(ref, suppressEncryption) { - assertWellFormed(isRef(ref), 'ref object is not a reference'); + assert(isRef(ref), 'ref object is not a reference'); var num = ref.num; - var e; if (num in this.cache) { - e = this.cache[num]; - if (e instanceof Stream) { - return e.makeSubStream(e.start, e.length, e.dict); - } - return e; + var cacheEntry = this.cache[num]; + return cacheEntry; } - e = this.getEntry(num); + var xrefEntry = this.getEntry(num); // the referenced entry can be free - if (e === null) - return (this.cache[num] = e); - - var gen = ref.gen; - var stream, parser; - if (e.uncompressed) { - if (e.gen != gen) - error('inconsistent generation in XRef'); - stream = this.stream.makeSubStream(e.offset); - parser = new Parser(new Lexer(stream), true, this); - var obj1 = parser.getObj(); - var obj2 = parser.getObj(); - var obj3 = parser.getObj(); - if (!isInt(obj1) || obj1 != num || - !isInt(obj2) || obj2 != gen || - !isCmd(obj3)) { - error('bad XRef entry'); - } - if (!isCmd(obj3, 'obj')) { - // some bad pdfs use "obj1234" and really mean 1234 - if (obj3.cmd.indexOf('obj') === 0) { - num = parseInt(obj3.cmd.substring(3), 10); - if (!isNaN(num)) - return num; - } - error('bad XRef entry'); - } - if (this.encrypt && !suppressEncryption) { - try { - e = parser.getObj(this.encrypt.createCipherTransform(num, gen)); - } catch (ex) { - // almost all streams must be encrypted, but sometimes - // they are not probably due to some broken generators - // re-trying without encryption - return this.fetch(ref, true); - } - } else { - e = parser.getObj(); - } - if (!isStream(e)) { - this.cache[num] = e; - } - return e; + if (xrefEntry === null) { + return (this.cache[num] = null); } - // compressed entry - var tableOffset = e.offset; - stream = this.fetch(new Ref(tableOffset, 0)); - if (!isStream(stream)) + if (xrefEntry.uncompressed) { + xrefEntry = this.fetchUncompressed(ref, xrefEntry, suppressEncryption); + } else { + xrefEntry = this.fetchCompressed(xrefEntry, suppressEncryption); + } + if (isDict(xrefEntry)){ + xrefEntry.objId = ref.toString(); + } else if (isStream(xrefEntry)) { + xrefEntry.dict.objId = ref.toString(); + } + return xrefEntry; + }, + + fetchUncompressed: function XRef_fetchUncompressed(ref, xrefEntry, + suppressEncryption) { + var gen = ref.gen; + var num = ref.num; + if (xrefEntry.gen !== gen) { + error('inconsistent generation in XRef'); + } + var stream = this.stream.makeSubStream(xrefEntry.offset + + this.stream.start); + var parser = new Parser(new Lexer(stream), true, this); + var obj1 = parser.getObj(); + var obj2 = parser.getObj(); + var obj3 = parser.getObj(); + if (!isInt(obj1) || parseInt(obj1, 10) !== num || + !isInt(obj2) || parseInt(obj2, 10) !== gen || + !isCmd(obj3)) { + error('bad XRef entry'); + } + if (!isCmd(obj3, 'obj')) { + // some bad PDFs use "obj1234" and really mean 1234 + if (obj3.cmd.indexOf('obj') === 0) { + num = parseInt(obj3.cmd.substring(3), 10); + if (!isNaN(num)) { + return num; + } + } + error('bad XRef entry'); + } + if (this.encrypt && !suppressEncryption) { + xrefEntry = parser.getObj(this.encrypt.createCipherTransform(num, gen)); + } else { + xrefEntry = parser.getObj(); + } + if (!isStream(xrefEntry)) { + this.cache[num] = xrefEntry; + } + return xrefEntry; + }, + + fetchCompressed: function XRef_fetchCompressed(xrefEntry, + suppressEncryption) { + var tableOffset = xrefEntry.offset; + var stream = this.fetch(new Ref(tableOffset, 0)); + if (!isStream(stream)) { error('bad ObjStm stream'); + } var first = stream.dict.get('First'); var n = stream.dict.get('N'); if (!isInt(first) || !isInt(n)) { error('invalid first and n parameters for ObjStm stream'); } - parser = new Parser(new Lexer(stream), false, this); + var parser = new Parser(new Lexer(stream), false, this); parser.allowStreams = true; - var i, entries = [], nums = []; + var i, entries = [], num, nums = []; // read the object numbers to populate cache for (i = 0; i < n; ++i) { num = parser.getObj(); @@ -6648,36 +4395,38 @@ var XRef = (function XRefClosure() { this.cache[num] = entries[i]; } } - e = entries[e.gen]; - if (e === undefined) { + xrefEntry = entries[xrefEntry.gen]; + if (xrefEntry === undefined) { error('bad XRef entry for compressed object'); } - return e; + return xrefEntry; }, + fetchIfRefAsync: function XRef_fetchIfRefAsync(obj) { if (!isRef(obj)) { - var promise = new LegacyPromise(); - promise.resolve(obj); - return promise; + return Promise.resolve(obj); } return this.fetchAsync(obj); }, + fetchAsync: function XRef_fetchAsync(ref, suppressEncryption) { - var promise = new LegacyPromise(); - var tryFetch = function (promise) { + var streamManager = this.stream.manager; + var xref = this; + return new Promise(function tryFetch(resolve, reject) { try { - promise.resolve(this.fetch(ref, suppressEncryption)); + resolve(xref.fetch(ref, suppressEncryption)); } catch (e) { if (e instanceof MissingDataException) { - this.stream.manager.requestRange(e.begin, e.end, tryFetch); + streamManager.requestRange(e.begin, e.end, function () { + tryFetch(resolve, reject); + }); return; } - promise.reject(e); + reject(e); } - }.bind(this, promise); - tryFetch(); - return promise; + }); }, + getCatalogObj: function XRef_getCatalogObj() { return this.root; } @@ -6687,8 +4436,8 @@ var XRef = (function XRefClosure() { })(); /** - * A NameTree is like a Dict but has some adventagous properties, see the spec - * (7.9.6) for more details. + * A NameTree is like a Dict but has some advantageous properties, see the + * spec (7.9.6) for more details. * TODO: implement all the Dict functions and make this more efficent. */ var NameTree = (function NameTreeClosure() { @@ -6718,8 +4467,9 @@ var NameTree = (function NameTreeClosure() { var kids = obj.get('Kids'); for (i = 0, n = kids.length; i < n; i++) { var kid = kids[i]; - if (processed.has(kid)) + if (processed.has(kid)) { error('invalid destinations'); + } queue.push(kid); processed.put(kid); } @@ -6733,11 +4483,172 @@ var NameTree = (function NameTreeClosure() { } } return dict; + }, + + get: function NameTree_get(destinationId) { + if (!this.root) { + return null; + } + + var xref = this.xref; + var kidsOrNames = xref.fetchIfRef(this.root); + var loopCount = 0; + var MAX_NAMES_LEVELS = 10; + var l, r, m; + + // Perform a binary search to quickly find the entry that + // contains the named destination we are looking for. + while (kidsOrNames.has('Kids')) { + loopCount++; + if (loopCount > MAX_NAMES_LEVELS) { + warn('Search depth limit for named destionations has been reached.'); + return null; + } + + var kids = kidsOrNames.get('Kids'); + if (!isArray(kids)) { + return null; + } + + l = 0; + r = kids.length - 1; + while (l <= r) { + m = (l + r) >> 1; + var kid = xref.fetchIfRef(kids[m]); + var limits = kid.get('Limits'); + + if (destinationId < limits[0]) { + r = m - 1; + } else if (destinationId > limits[1]) { + l = m + 1; + } else { + kidsOrNames = xref.fetchIfRef(kids[m]); + break; + } + } + if (l > r) { + return null; + } + } + + // If we get here, then we have found the right entry. Now + // go through the named destinations in the Named dictionary + // until we find the exact destination we're looking for. + var names = kidsOrNames.get('Names'); + if (isArray(names)) { + // Perform a binary search to reduce the lookup time. + l = 0; + r = names.length - 2; + while (l <= r) { + // Check only even indices (0, 2, 4, ...) because the + // odd indices contain the actual D array. + m = (l + r) & ~1; + if (destinationId < names[m]) { + r = m - 2; + } else if (destinationId > names[m]) { + l = m + 2; + } else { + return xref.fetchIfRef(names[m + 1]); + } + } + } + return null; } }; return NameTree; })(); +/** + * "A PDF file can refer to the contents of another file by using a File + * Specification (PDF 1.1)", see the spec (7.11) for more details. + * NOTE: Only embedded files are supported (as part of the attachments support) + * TODO: support the 'URL' file system (with caching if !/V), portable + * collections attributes and related files (/RF) + */ +var FileSpec = (function FileSpecClosure() { + function FileSpec(root, xref) { + if (!root || !isDict(root)) { + return; + } + this.xref = xref; + this.root = root; + if (root.has('FS')) { + this.fs = root.get('FS'); + } + this.description = root.has('Desc') ? + stringToPDFString(root.get('Desc')) : + ''; + if (root.has('RF')) { + warn('Related file specifications are not supported'); + } + this.contentAvailable = true; + if (!root.has('EF')) { + this.contentAvailable = false; + warn('Non-embedded file specifications are not supported'); + } + } + + function pickPlatformItem(dict) { + // Look for the filename in this order: + // UF, F, Unix, Mac, DOS + if (dict.has('UF')) { + return dict.get('UF'); + } else if (dict.has('F')) { + return dict.get('F'); + } else if (dict.has('Unix')) { + return dict.get('Unix'); + } else if (dict.has('Mac')) { + return dict.get('Mac'); + } else if (dict.has('DOS')) { + return dict.get('DOS'); + } else { + return null; + } + } + + FileSpec.prototype = { + get filename() { + if (!this._filename && this.root) { + var filename = pickPlatformItem(this.root) || 'unnamed'; + this._filename = stringToPDFString(filename). + replace(/\\\\/g, '\\'). + replace(/\\\//g, '/'). + replace(/\\/g, '/'); + } + return this._filename; + }, + get content() { + if (!this.contentAvailable) { + return null; + } + if (!this.contentRef && this.root) { + this.contentRef = pickPlatformItem(this.root.get('EF')); + } + var content = null; + if (this.contentRef) { + var xref = this.xref; + var fileObj = xref.fetchIfRef(this.contentRef); + if (fileObj && isStream(fileObj)) { + content = fileObj.getBytes(); + } else { + warn('Embedded file specification points to non-existing/invalid ' + + 'content'); + } + } else { + warn('Embedded file specification does not have a content'); + } + return content; + }, + get serializable() { + return { + filename: this.filename, + content: this.content + }; + } + }; + return FileSpec; +})(); + /** * A helper for loading missing data in object graphs. It traverses the graph * depth first and queues up any objects that have missing data. Once it has @@ -6750,12 +4661,12 @@ var NameTree = (function NameTreeClosure() { * entire PDF document object graph to be traversed. */ var ObjectLoader = (function() { - function mayHaveChildren(value) { return isRef(value) || isDict(value) || isArray(value) || isStream(value); } function addChildren(node, nodesToVisit) { + var value; if (isDict(node) || isStream(node)) { var map; if (isDict(node)) { @@ -6764,14 +4675,14 @@ var ObjectLoader = (function() { map = node.dict.map; } for (var key in map) { - var value = map[key]; + value = map[key]; if (mayHaveChildren(value)) { nodesToVisit.push(value); } } } else if (isArray(node)) { for (var i = 0, ii = node.length; i < ii; i++) { - var value = node[i]; + value = node[i]; if (mayHaveChildren(value)) { nodesToVisit.push(value); } @@ -6787,15 +4698,14 @@ var ObjectLoader = (function() { } ObjectLoader.prototype = { - load: function ObjectLoader_load() { var keys = this.keys; - this.promise = new LegacyPromise(); + this.capability = createPromiseCapability(); // Don't walk the graph if all the data is already loaded. if (!(this.xref.stream instanceof ChunkedStream) || this.xref.stream.getMissingChunks().length === 0) { - this.promise.resolve(); - return this.promise; + this.capability.resolve(); + return this.capability.promise; } this.refSet = new RefSet(); @@ -6806,7 +4716,7 @@ var ObjectLoader = (function() { } this.walk(nodesToVisit); - return this.promise; + return this.capability.promise; }, walk: function ObjectLoader_walk(nodesToVisit) { @@ -6873,17 +4783,14 @@ var ObjectLoader = (function() { } // Everything is loaded. this.refSet = null; - this.promise.resolve(); + this.capability.resolve(); } - }; return ObjectLoader; })(); - - var ISOAdobeCharset = [ '.notdef', 'space', 'exclam', 'quotedbl', 'numbersign', 'dollar', 'percent', 'ampersand', 'quoteright', 'parenleft', 'parenright', @@ -6986,6935 +4893,2858 @@ var ExpertSubsetCharset = [ -var CIDToUnicodeMaps = { - 'Adobe-Japan1': [[32, 160], {f: 12, c: 33}, [45, 8209], {f: 46, c: 46}, 165, - {f: 2, c: 93}, [95, 818], [96, 768], {f: 27, c: 97}, 166, 125, [732, 771], - [700, 8217], 92, [699, 8216], 124, [126, 8764], {f: 3, c: 161}, 8260, 402, - 0, 164, 8220, 171, {f: 2, c: 8249}, {f: 2, c: 64257}, [8210, 8211], 0, 0, - [183, 8729], 0, 8226, 8218, 8222, 8221, 187, 0, 0, 191, {f: 2, c: 769}, - [175, 772], {f: 3, c: 774}, 778, [184, 807], 779, 808, 780, [822, 8212], - 198, 170, 321, 216, 338, 186, 230, 305, 322, 248, 339, 223, 173, 169, 172, - 174, 0, 0, {f: 2, c: 178}, 181, 185, {f: 3, c: 188}, {f: 6, c: 192}, - {f: 16, c: 199}, 0, {f: 6, c: 217}, {f: 6, c: 224}, {f: 16, c: 231}, 0, - {f: 7, c: 249}, 352, 376, 381, [773, 8254], 353, 8482, 382, 0, 8194, - {f: 59, c: 33}, 165, {f: 31, c: 93}, 65512, {f: 2, c: 125}, 0, - {f: 63, c: 65377}, {s: 243}, [8195, 12288], - {f: 2, c: 12289}, 65292, 65294, 12539, {f: 2, c: 65306}, 65311, 65281, - {f: 2, c: 12443}, 180, 65344, 168, 65342, 65507, 65343, {f: 2, c: 12541}, - {f: 2, c: 12445}, 12291, 20189, {f: 3, c: 12293}, 12540, 8213, 8208, 65295, - 65340, [12316, 65374], 8214, 65372, 8230, 8229, {s: 4}, {f: 2, c: 65288}, - {f: 2, c: 12308}, 65339, 65341, 65371, 65373, {f: 10, c: 12296}, 65291, - [8722, 65293], 177, 215, 247, 65309, 8800, 65308, 65310, {f: 2, c: 8806}, - 8734, 8756, 9794, 9792, 176, {f: 2, c: 8242}, 8451, 65509, 65284, - {f: 2, c: 65504}, 65285, 65283, 65286, 65290, 65312, 167, 9734, 9733, 9675, - 9679, 9678, 9671, 9670, 9633, 9632, 9651, 9650, 9661, 9660, 8251, 12306, - 8594, {f: 2, c: 8592}, 8595, 12307, 8712, 8715, {f: 2, c: 8838}, - {f: 2, c: 8834}, 8746, 8745, {f: 2, c: 8743}, 65506, 8658, 8660, 8704, - 8707, 8736, 8869, 8978, 8706, 8711, 8801, 8786, {f: 2, c: 8810}, 8730, - 8765, 8733, 8757, {f: 2, c: 8747}, 8491, 8240, 9839, 9837, 9834, - {f: 2, c: 8224}, 182, 9711, {f: 10, c: 65296}, {f: 26, c: 65313}, - {f: 26, c: 65345}, {f: 83, c: 12353}, {f: 86, c: 12449}, {f: 17, c: 913}, - {f: 7, c: 931}, {f: 17, c: 945}, {f: 7, c: 963}, {f: 6, c: 1040}, 1025, - {f: 32, c: 1046}, 1105, {f: 26, c: 1078}, 20124, 21782, 23043, 38463, - 21696, 24859, 25384, 23030, 36898, 33909, 33564, 31312, 24746, 25569, - 28197, 26093, 33894, 33446, 39925, 26771, 22311, 26017, 25201, 23451, - 22992, 34427, 39156, 32098, 32190, 39822, 25110, 31903, 34999, 23433, - 24245, 25353, 26263, 26696, 38343, 38797, 26447, 20197, 20234, 20301, - 20381, 20553, 22258, 22839, 22996, 23041, 23561, 24799, 24847, 24944, - 26131, 26885, 28858, 30031, 30064, 31227, 32173, 32239, 32963, 33806, - [12176, 34915], 35586, 36949, 36986, 21307, 20117, 20133, 22495, 32946, - 37057, 30959, [12032, 19968], 22769, 28322, 36920, 31282, 33576, 33419, - 39983, 20801, 21360, 21693, 21729, 22240, 23035, 24341, 39154, 28139, - 32996, 34093, 38498, 38512, 38560, 38907, 21515, 21491, 23431, 28879, - [12155, 32701], 36802, [12204, 38632], 21359, 40284, 31418, 19985, 30867, - [12165, 33276], 28198, 22040, 21764, 27421, 34074, 39995, 23013, 21417, - 28006, [12128, 29916], 38287, 22082, 20113, 36939, 38642, 33615, 39180, - 21473, 21942, 23344, 24433, 26144, 26355, 26628, 27704, 27891, 27945, - 29787, 30408, 31310, 38964, 33521, 34907, 35424, 37613, 28082, 30123, - 30410, 39365, 24742, 35585, 36234, 38322, 27022, 21421, 20870, 22290, - 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52600, 52616, {f: 2, c: 52628}, 52632, 52636, {f: 2, c: 52644}, 52647, - 52649, 52656, 52676, 52684, 52688, 52712, 52716, 52720, {f: 2, c: 52728}, - 52731, 52733, 52740, 52744, 52748, 52756, 52761, {f: 2, c: 52768}, 52772, - 52776, {f: 2, c: 52784}, 52787, 52789, {f: 2, c: 52824}, 52828, - {f: 3, c: 52831}, {f: 2, c: 52840}, 52843, 52845, {f: 2, c: 52852}, 52856, - 52860, {f: 2, c: 52868}, 52871, 52873, {f: 2, c: 52880}, 52884, 52888, - {f: 2, c: 52896}, {f: 3, c: 52899}, {f: 2, c: 52908}, 52929, - {f: 2, c: 52964}, 52968, {f: 2, c: 52971}, {f: 2, c: 52980}, - {f: 3, c: 52983}, {f: 2, c: 52992}, 52996, 53000, {f: 2, c: 53008}, 53011, - 53013, 53020, 53024, 53028, {f: 2, c: 53036}, {f: 3, c: 53039}, 53048, - {f: 2, c: 53076}, 53080, 53084, {f: 2, c: 53092}, 53095, 53097, - {f: 2, c: 53104}, 53108, 53112, 53120, 53125, 53132, 53153, 53160, 53168, - 53188, {f: 2, c: 53216}, 53220, 53224, {f: 2, c: 53232}, 53235, 53237, - 53244, 53248, 53252, 53265, 53272, 53293, {f: 2, c: 53300}, 53304, 53308, - {f: 2, c: 53316}, 53319, 53321, 53328, 53332, 53336, 53344, - {f: 2, c: 53356}, 53360, 53364, {f: 2, c: 53372}, 53377, {f: 2, c: 53412}, - 53416, 53420, {f: 2, c: 53428}, 53431, 53433, {f: 2, c: 53440}, 53444, - {f: 2, c: 53448}, {f: 2, c: 53456}, {f: 3, c: 53459}, {f: 2, c: 53468}, - 53472, 53476, {f: 2, c: 53484}, {f: 3, c: 53487}, 53496, 53517, - {f: 2, c: 53552}, 53556, 53560, 53562, {f: 2, c: 53568}, {f: 3, c: 53571}, - {f: 2, c: 53580}, 53584, 53588, {f: 2, c: 53596}, 53599, 53601, 53608, - 53612, 53628, 53636, 53640, {f: 2, c: 53664}, 53668, 53672, - {f: 2, c: 53680}, 53683, 53685, 53690, 53692, 53696, 53720, 53748, 53752, - 53767, 53769, 53776, {f: 2, c: 53804}, 53808, 53812, {f: 2, c: 53820}, - 53823, 53825, 53832, 53852, 53860, {f: 2, c: 53888}, 53892, 53896, - {f: 2, c: 53904}, 53909, 53916, 53920, 53924, 53932, 53937, - {f: 2, c: 53944}, 53948, {f: 2, c: 53951}, 53954, {f: 2, c: 53960}, 53963, - 53972, 53976, 53980, {f: 2, c: 53988}, {f: 2, c: 54000}, 54004, 54008, - {f: 2, c: 54016}, 54019, 54021, {f: 3, c: 54028}, 54032, 54036, 54038, - {f: 2, c: 54044}, {f: 3, c: 54047}, 54053, {f: 2, c: 54056}, 54060, 54064, - {f: 2, c: 54072}, {f: 3, c: 54075}, {f: 2, c: 54084}, {f: 2, c: 54140}, - 54144, 54148, {f: 2, c: 54156}, {f: 3, c: 54159}, {f: 2, c: 54168}, 54172, - 54176, {f: 2, c: 54184}, 54187, 54189, 54196, 54200, 54204, - {f: 2, c: 54212}, {f: 2, c: 54216}, 54224, 54232, 54241, 54243, - {f: 2, c: 54252}, 54256, 54260, {f: 2, c: 54268}, 54271, 54273, 54280, - 54301, 54336, 54340, 54364, 54368, 54372, 54381, 54383, {f: 2, c: 54392}, - 54396, {f: 2, c: 54399}, 54402, {f: 2, c: 54408}, 54411, 54413, 54420, - 54441, 54476, 54480, 54484, 54492, 54495, 54504, 54508, 54512, 54520, - 54523, 54525, 54532, 54536, 54540, {f: 2, c: 54548}, 54551, - {f: 2, c: 54588}, 54592, 54596, {f: 2, c: 54604}, 54607, 54609, - {f: 2, c: 54616}, 54620, 54624, 54629, {f: 2, c: 54632}, 54635, 54637, - {f: 2, c: 54644}, 54648, 54652, {f: 2, c: 54660}, {f: 3, c: 54663}, 54672, - 54693, {f: 2, c: 54728}, 54732, 54736, 54738, {f: 2, c: 54744}, 54747, - 54749, {f: 2, c: 54756}, 54760, 54764, {f: 2, c: 54772}, 54775, 54777, - {f: 2, c: 54784}, 54788, 54792, {f: 2, c: 54800}, {f: 3, c: 54803}, 54812, - 54816, 54820, 54829, {f: 2, c: 54840}, 54844, 54848, 54853, - {f: 2, c: 54856}, 54859, 54861, 54865, {f: 2, c: 54868}, 54872, 54876, - 54887, 54889, {f: 2, c: 54896}, 54900, 54915, 54917, {f: 2, c: 54924}, - 54928, 54932, 54941, 54943, 54945, 54952, 54956, 54960, 54969, 54971, - {f: 2, c: 54980}, 54984, 54988, 54993, 54996, 54999, 55001, 55008, 55012, - 55016, 55024, 55029, {f: 2, c: 55036}, 55040, 55044, 55057, - {f: 2, c: 55064}, 55068, 55072, {f: 2, c: 55080}, 55083, 55085, - {f: 2, c: 55092}, 55096, 55100, 55108, 55111, 55113, {f: 2, c: 55120}, - 55124, {f: 4, c: 55126}, {f: 2, c: 55136}, 55139, 55141, 55145, 55148, - 55152, 55156, {f: 2, c: 55164}, 55169, {f: 2, c: 55176}, 55180, 55184, - {f: 2, c: 55192}, 55195, 55197, 20285, 20339, 20551, 20729, 21152, 21487, - 21621, 21733, 22025, 23233, 23478, 26247, {f: 2, c: 26550}, 26607, 27468, - 29634, 30146, 31292, 33499, 33540, 34903, 34952, 35382, [36040, 63747], - 36303, 36603, 36838, 39381, 21051, 21364, 21508, 24682, 24932, 27580, - 29647, 33050, 35258, [12179, 35282], 38307, 20355, 21002, 22718, 22904, - 23014, [12082, 24178], 24185, 25031, 25536, 26438, 26604, 26751, 28567, - 30286, 30475, 30965, 31240, 31487, 31777, 32925, [12169, 33390], 33393, - 35563, 38291, 20075, 21917, 26359, 28212, 30883, 31469, 33883, 35088, - 34638, 38824, 21208, 22350, 22570, 23884, 24863, 25022, 25121, 25954, - 26577, 27204, 28187, [12130, 29976], 30131, 30435, 30640, 32058, 37039, - {f: 2, c: 37969}, 40853, 21283, 23724, 30002, 32987, 37440, 38296, 21083, - 22536, 23004, 23713, 23831, 24247, 24378, 24394, 24951, 27743, 30074, - 30086, 31968, 32115, 32177, 32652, 33108, 33313, 34193, 35137, 35611, - 37628, [38477, 64009], 40007, 20171, 20215, 20491, 20977, 22607, 24887, - 24894, 24936, 25913, 27114, 28433, 30117, 30342, 30422, 31623, 33445, - 33995, 37799, 38283, 21888, 23458, 22353, 31923, 32697, 37301, 20520, - 21435, 23621, 24040, 25298, 25454, 25818, 25831, 28192, 28844, 31067, - 36317, 36382, 36989, 37445, 37624, 20094, 20214, 20581, [12081, 24062], - 24314, 24838, 26967, 33137, 34388, 36423, 37749, 39467, 20062, 20625, - 26480, 26688, 20745, 21133, 21138, 27298, 30652, 37392, 40660, 21163, - 24623, 36850, 20552, 25001, 25581, 25802, 26684, 27268, 28608, 33160, - 35233, 38548, 22533, 29309, [12125, 29356], 29956, 32121, 32365, 32937, - [12178, 35211, 64010], 35700, 36963, 40273, 25225, 27770, 28500, 32080, - 32570, 35363, 20860, 24906, 31645, 35609, 37463, 37772, 20140, 20435, - 20510, 20670, 20742, 21185, 21197, 21375, 22384, 22659, 24218, 24465, - 24950, 25004, 25806, 25964, 26223, 26299, [26356, 63745], 26775, 28039, - 28805, 28913, 29855, 29861, 29898, 30169, 30828, 30956, 31455, 31478, - 32069, 32147, 32789, 32831, 33051, 33686, 35686, 36629, 36885, 37857, - 38915, 38968, 39514, 39912, 20418, 21843, 22586, [22865, 63753], 23395, - 23622, 24760, 25106, 26690, 26800, 26856, 28330, 30028, 30328, 30926, - 31293, 31995, 32363, 32380, 35336, 35489, 35903, 38542, 40388, 21476, - 21481, 21578, 21617, 22266, 22993, 23396, 23611, 24235, 25335, 25911, - 25925, 25970, 26272, 26543, 27073, 27837, 30204, 30352, 30590, 31295, - 32660, 32771, 32929, 33167, 33510, 33533, 33776, 34241, 34865, 34996, - 35493, 36764, 37678, 38599, 39015, [12220, 39640], [12238, 40723], 21741, - 26011, 26354, 26767, 31296, [12181, 35895], 40288, 22256, 22372, 23825, - 26118, 26801, 26829, 28414, 29736, 34974, 39908, 27752, [12219, 39592], - 20379, 20844, 20849, 21151, 23380, [12079, 24037], 24656, 24685, 25329, - 25511, 25915, 29657, 31354, 34467, 36002, 38799, [20018, 63749], 23521, - [12093, 25096], 26524, [12128, 29916], 31185, 33747, 35463, 35506, 36328, - 36942, 37707, 38982, [24275, 64011], 27112, 34303, 37101, 20896, 23448, - 23532, 24931, 26874, 27454, 28748, 29743, 29912, 31649, 32592, 33733, - 35264, 36011, 38364, 39208, 21038, 24669, 25324, 36866, 20362, 20809, - 21281, 22745, 24291, 26336, 27960, 28826, 29378, 29654, 31568, 33009, - 37979, 21350, 25499, 32619, 20054, 20608, 22602, 22750, 24618, 24871, - 25296, 27088, 39745, 23439, 32024, 32945, 36703, 20132, 20689, 21676, - 21932, 23308, 23968, 24039, 25898, 25934, 26657, 27211, 29409, 30350, - 30703, 32094, 32761, 33184, 34126, 34527, 36611, 36686, 37066, 39171, - 39509, 39851, 19992, 20037, 20061, 20167, 20465, 20855, 21246, 21312, - [12061, 21475], [21477, 63750], 21646, 22036, 22389, 22434, 23495, 23943, - 24272, 25084, 25304, 25937, 26552, 26601, 27083, 27472, 27590, 27628, - 27714, 28317, 28792, 29399, 29590, 29699, 30655, 30697, 31350, 32127, - 32777, [12165, 33276], 33285, 33290, 33503, 34914, 35635, 36092, 36544, - 36881, 37041, 37476, 37558, 39378, 39493, 40169, 40407, - [12244, 40860, 63751, 63752], 22283, 23616, 33738, 38816, 38827, 40628, - 21531, 31384, 32676, 35033, 36557, 37089, 22528, 23624, 25496, 31391, - 23470, [12088, 24339], 31353, 31406, 33422, 36524, 20518, 21048, 21240, - 21367, 22280, 25331, 25458, 27402, 28099, 30519, 21413, 29527, 34152, - 36470, 38357, 26426, 27331, 28528, 35437, 36556, 39243, 26231, 27512, - 36020, [12225, 39740], 21483, 22317, 22862, 25542, 27131, 29674, 30789, - 31418, 31429, 31998, 33909, 35215, 36211, 36917, 38312, 21243, 22343, - 30023, 31584, 33740, 37406, 27224, 20811, 21067, 21127, 25119, 26840, - 26997, 38553, 20677, 21156, 21220, 25027, [12100, 26020], 26681, 27135, - 29822, 31563, 33465, 33771, 35250, 35641, 36817, 39241, 20170, 22935, - 25810, 26129, 27278, 29748, 31105, 31165, 33449, {f: 2, c: 34942}, 35167, - 37670, 20235, 21450, 24613, 25201, 27762, 32026, 32102, 20120, 20834, - 30684, 32943, 20225, 20238, 20854, 20864, 21980, 22120, 22331, 22522, - 22524, 22804, 22855, 22931, 23492, 23696, 23822, [12080, 24049], 24190, - 24524, 25216, 26071, 26083, {f: 2, c: 26398}, 26462, 26827, 26820, 27231, - 27450, 27683, 27773, 27778, 28103, 29592, 29734, 29738, 29826, 29859, - 30072, 30079, 30849, 30959, 31041, {f: 2, c: 31047}, 31098, 31637, 32000, - 32186, 32648, 32774, 32813, 32908, 35352, 35663, [35912, 63744], 36215, - 37665, 37668, 39138, 39249, {f: 2, c: 39438}, 39525, 40594, 32202, 20342, - 21513, 25326, 26708, [12198, 37329, 63754], 21931, 20794, 23068, 25062, - [25295, 63835], 25343, 37027, [35582, 63837], 26262, 29014, 38627, 25423, - 25466, 21335, 26511, 26976, 28275, 30007, 32013, 34930, 22218, 23064, - 20035, 20839, [22856, 63756], 26608, 32784, [12069, 22899, 63873], - [24180, 63886], [25754, 63889], [31178, 63893], [24565, 63907], 24684, - 25288, [25467, 63908], [23527, 63839, 63914], 23511, 21162, 22900, 24361, - [24594, 63840], 29785, 39377, 28611, 33215, 36786, 24817, 33126, - [23615, 63933], 23273, 35365, [26491, 63944], [32016, 63951], 33021, 23612, - [27877, 63971], [21311, 63979], [28346, 63980], 22810, [33590, 63998], - [20025, 63838], 20150, 20294, 21934, 22296, 22727, 24406, 26039, 26086, - 27264, 27573, 28237, 30701, 31471, 31774, 32222, 34507, 34962, 37170, - 37723, 25787, 28606, 29562, 30136, 36948, 21846, 22349, 25018, 25812, - 26311, 28129, 28251, 28525, 28601, 30192, 32835, 33213, 34113, 35203, - 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{f: 3, c: 21909}, {f: 2, c: 21914}, 21918, {f: 7, c: 21920}, - {f: 2, c: 21928}, 21931, 21933, {f: 2, c: 21935}, 21940, 21942, 21944, - 21946, 21948, {f: 5, c: 21951}, 21960, {f: 2, c: 21962}, {f: 2, c: 21967}, - 21973, {f: 3, c: 21975}, 21979, 21982, 21984, 21986, 21991, - {f: 2, c: 21997}, {f: 2, c: 22000}, 22004, {f: 5, c: 22008}, 22015, - {f: 4, c: 22018}, 22023, {f: 2, c: 22026}, {f: 4, c: 22032}, 22037, - {f: 2, c: 22041}, 22045, {f: 3, c: 22048}, {f: 2, c: 22053}, 22056, - {f: 2, c: 22058}, 22067, 22071, 22074, {f: 3, c: 22076}, 22080, - {f: 10, c: 22082}, {f: 5, c: 22095}, {f: 2, c: 22101}, {f: 2, c: 22106}, - {f: 2, c: 22110}, 22113, 22115, 22119, {f: 2, c: 22125}, 22128, 22131, - 22133, 22135, 22138, {f: 3, c: 22141}, {f: 4, c: 22145}, {f: 4, c: 22152}, - 22157, {f: 3, c: 22160}, 22164, {f: 3, c: 22166}, {f: 9, c: 22170}, - {f: 2, c: 22180}, 22183, {f: 5, c: 22185}, {f: 3, c: 22192}, 22197, - {f: 4, c: 22200}, {f: 3, c: 22205}, {f: 2, c: 22211}, {f: 2, c: 22214}, - 22219, {f: 4, c: 22221}, {f: 2, c: 22226}, {f: 2, c: 22229}, - {f: 2, c: 22232}, 22236, 22243, {f: 6, c: 22245}, 22252, {f: 2, c: 22254}, - {f: 2, c: 22258}, {f: 3, c: 22262}, {f: 2, c: 22267}, {f: 3, c: 22272}, - 22277, 22284, {f: 4, c: 22286}, {f: 2, c: 22292}, 22295, {f: 3, c: 22297}, - {f: 2, c: 22301}, {f: 3, c: 22304}, {f: 4, c: 22308}, 22315, - {f: 2, c: 22321}, {f: 5, c: 22324}, {f: 2, c: 22332}, 22335, 22337, - {f: 4, c: 22339}, {f: 2, c: 22344}, 22347, {f: 5, c: 22354}, - {f: 2, c: 22360}, {f: 2, c: 22370}, 22373, 22375, 22380, 22382, - {f: 3, c: 22384}, {f: 2, c: 22388}, {f: 3, c: 22392}, {f: 5, c: 22397}, - {f: 4, c: 22407}, {f: 5, c: 22413}, {f: 7, c: 22420}, {f: 4, c: 22428}, - 22437, 22440, 22442, 22444, {f: 3, c: 22447}, 22451, {f: 3, c: 22453}, - {f: 9, c: 22457}, {f: 7, c: 22468}, {f: 2, c: 22476}, {f: 2, c: 22480}, - 22483, {f: 2, c: 22486}, {f: 2, c: 22491}, 22494, {f: 2, c: 22498}, - {f: 8, c: 22501}, 22510, {f: 4, c: 22512}, {f: 2, c: 22517}, - {f: 2, c: 22523}, {f: 2, c: 22526}, 22529, {f: 2, c: 22531}, - {f: 2, c: 22536}, 22540, {f: 3, c: 22542}, {f: 3, c: 22546}, - 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22858, {f: 2, c: 22860}, 22864, {f: 2, c: 22866}, 22873, {f: 5, c: 22875}, - 22881, {f: 2, c: 22883}, {f: 3, c: 22886}, 22891, 22893, {f: 4, c: 22895}, - 22901, 22903, {f: 3, c: 22906}, {f: 3, c: 22910}, 22917, 22921, - {f: 2, c: 22923}, {f: 4, c: 22926}, {f: 2, c: 22932}, 22936, - {f: 3, c: 22938}, {f: 4, c: 22943}, {f: 2, c: 22950}, {f: 2, c: 22956}, - {f: 2, c: 22960}, {f: 6, c: 22963}, 22970, {f: 2, c: 22972}, - {f: 7, c: 22975}, {f: 3, c: 22983}, {f: 4, c: 22988}, {f: 2, c: 22997}, - 23001, 23003, {f: 5, c: 23006}, 23012, {f: 2, c: 23014}, {f: 3, c: 23017}, - {f: 12, c: 23021}, 23034, {f: 3, c: 23036}, 23040, 23042, {f: 2, c: 23050}, - {f: 4, c: 23053}, 23058, {f: 4, c: 23060}, {f: 3, c: 23065}, - {f: 2, c: 23069}, {f: 2, c: 23073}, 23076, {f: 3, c: 23078}, - {f: 7, c: 23082}, 23091, 23093, {f: 5, c: 23095}, {f: 3, c: 23101}, - {f: 4, c: 23106}, {f: 2, c: 23111}, {f: 10, c: 23115}, {f: 4, c: 23126}, - {f: 7, c: 23131}, {f: 3, c: 23139}, {f: 2, c: 23144}, {f: 2, c: 23147}, - {f: 6, c: 23150}, {f: 2, c: 23160}, {f: 4, c: 23163}, {f: 18, c: 23168}, - {f: 7, c: 23187}, {f: 11, c: 23196}, {f: 2, c: 23208}, {f: 7, c: 23211}, - 23220, {f: 2, c: 23222}, {f: 4, c: 23225}, {f: 2, c: 23231}, - {f: 6, c: 23235}, {f: 2, c: 23242}, {f: 5, c: 23245}, 23251, 23253, - {f: 3, c: 23257}, {f: 3, c: 23261}, 23266, {f: 2, c: 23268}, - {f: 2, c: 23271}, 23274, {f: 5, c: 23276}, {f: 3, c: 23282}, - {f: 5, c: 23286}, {f: 4, c: 23292}, {f: 7, c: 23297}, 23306, - {f: 9, c: 23309}, 23320, {f: 7, c: 23322}, {f: 8, c: 23330}, - {f: 5, c: 23339}, 23345, 23347, {f: 2, c: 23349}, {f: 7, c: 23353}, - {f: 11, c: 23361}, {f: 3, c: 23373}, 23378, 23382, 23390, {f: 2, c: 23392}, - {f: 2, c: 23399}, {f: 3, c: 23405}, 23410, 23412, {f: 2, c: 23414}, 23417, - {f: 2, c: 23419}, 23422, 23426, 23430, 23434, {f: 2, c: 23437}, - {f: 3, c: 23440}, 23444, 23446, 23455, {f: 3, c: 23463}, {f: 4, c: 23468}, - {f: 2, c: 23473}, 23479, {f: 3, c: 23482}, {f: 2, c: 23488}, 23491, - {f: 4, c: 23496}, {f: 3, c: 23501}, 23505, {f: 9, c: 23508}, 23520, 23523, - 23530, 23533, 23535, {f: 4, c: 23537}, 23543, {f: 2, c: 23549}, 23552, - {f: 2, c: 23554}, 23557, 23564, 23568, {f: 2, c: 23570}, 23575, 23577, - 23579, {f: 4, c: 23582}, 23587, 23590, {f: 4, c: 23592}, {f: 4, c: 23597}, - {f: 2, c: 23602}, {f: 2, c: 23605}, {f: 2, c: 23619}, {f: 2, c: 23622}, - {f: 2, c: 23628}, {f: 3, c: 23634}, {f: 3, c: 23638}, {f: 4, c: 23642}, - 23647, 23655, {f: 3, c: 23657}, 23661, 23664, {f: 7, c: 23666}, - {f: 4, c: 23675}, 23680, {f: 5, c: 23683}, {f: 3, c: 23689}, - {f: 2, c: 23694}, {f: 2, c: 23698}, 23701, {f: 4, c: 23709}, - {f: 5, c: 23716}, 23722, {f: 3, c: 23726}, 23730, 23732, 23734, - {f: 4, c: 23737}, 23742, 23744, {f: 2, c: 23746}, {f: 6, c: 23749}, - {f: 6, c: 23756}, {f: 6, c: 23763}, {f: 7, c: 23770}, {f: 2, c: 23778}, - 23783, 23785, {f: 2, c: 23787}, {f: 2, c: 23790}, {f: 3, c: 23793}, 23797, - {f: 4, c: 23799}, 23804, {f: 4, c: 23806}, {f: 2, c: 23812}, - {f: 5, c: 23816}, {f: 5, c: 23823}, 23829, {f: 3, c: 23832}, - {f: 2, c: 23836}, {f: 5, c: 23839}, 23845, 23848, {f: 2, c: 23850}, - {f: 5, c: 23855}, {f: 8, c: 23861}, {f: 8, c: 23871}, {f: 2, c: 23880}, - 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24244, {f: 4, c: 24250}, {f: 10, c: 24255}, {f: 6, c: 24267}, - {f: 2, c: 24276}, {f: 4, c: 24279}, {f: 3, c: 24284}, {f: 4, c: 24292}, - 24297, 24299, {f: 6, c: 24301}, 24309, {f: 2, c: 24312}, {f: 3, c: 24315}, - {f: 3, c: 24325}, 24329, {f: 3, c: 24332}, 24336, 24338, 24340, 24342, - {f: 2, c: 24345}, {f: 3, c: 24348}, {f: 4, c: 24353}, 24360, - {f: 2, c: 24363}, 24366, 24368, 24370, 24372, {f: 3, c: 24374}, 24379, - {f: 3, c: 24381}, {f: 5, c: 24385}, 24391, {f: 3, c: 24393}, 24397, 24399, - 24401, 24404, {f: 3, c: 24410}, {f: 3, c: 24414}, 24419, 24421, - {f: 2, c: 24423}, 24427, {f: 2, c: 24430}, 24434, {f: 3, c: 24436}, 24440, - 24442, {f: 3, c: 24445}, 24451, 24454, {f: 3, c: 24461}, {f: 2, c: 24467}, - 24470, {f: 2, c: 24474}, 24477, 24479, {f: 6, c: 24482}, {f: 2, c: 24491}, - {f: 6, c: 24495}, 24502, 24504, {f: 2, c: 24506}, {f: 5, c: 24510}, - {f: 2, c: 24519}, {f: 2, c: 24522}, 24526, {f: 3, c: 24531}, - {f: 3, c: 24538}, {f: 2, c: 24542}, {f: 2, c: 24546}, {f: 2, c: 24549}, - {f: 2, c: 24552}, 24556, {f: 2, c: 24559}, {f: 3, c: 24562}, - {f: 2, c: 24566}, {f: 2, c: 24569}, 24572, {f: 3, c: 24583}, - {f: 2, c: 24587}, {f: 2, c: 24592}, 24595, {f: 2, c: 24599}, 24602, - {f: 2, c: 24606}, {f: 3, c: 24610}, {f: 3, c: 24620}, {f: 5, c: 24624}, - {f: 5, c: 24630}, {f: 2, c: 24637}, 24640, {f: 7, c: 24644}, 24652, - {f: 2, c: 24654}, 24657, {f: 2, c: 24659}, {f: 3, c: 24662}, - {f: 2, c: 24667}, {f: 4, c: 24670}, {f: 2, c: 24677}, 24686, - {f: 2, c: 24689}, {f: 2, c: 24692}, 24695, 24702, {f: 3, c: 24704}, - {f: 4, c: 24709}, {f: 2, c: 24714}, {f: 4, c: 24718}, 24723, 24725, - {f: 3, c: 24727}, 24732, 24734, {f: 2, c: 24737}, {f: 2, c: 24740}, 24743, - {f: 2, c: 24745}, 24750, 24752, 24755, 24759, {f: 2, c: 24761}, - {f: 8, c: 24765}, {f: 3, c: 24775}, {f: 5, c: 24780}, {f: 3, c: 24786}, - {f: 2, c: 24790}, 24793, 24795, 24798, {f: 4, c: 24802}, 24810, 24821, - {f: 2, c: 24823}, {f: 4, c: 24828}, {f: 4, c: 24834}, 24839, - {f: 3, c: 24842}, {f: 5, c: 24848}, {f: 4, c: 24854}, {f: 2, c: 24861}, - 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{f: 2, c: 30236}, 30243, 30248, 30252, {f: 2, c: 30254}, {f: 2, c: 30257}, - {f: 2, c: 30262}, {f: 2, c: 30265}, 30269, 30273, {f: 2, c: 30276}, 30280, - {f: 2, c: 30282}, {f: 6, c: 30286}, 30293, 30295, {f: 3, c: 30297}, 30301, - {f: 2, c: 30304}, 30310, 30312, 30314, {f: 3, c: 30323}, [12136, 30326], - 30327, {f: 2, c: 30329}, {f: 3, c: 30335}, 30339, 30341, {f: 2, c: 30345}, - {f: 2, c: 30348}, {f: 2, c: 30351}, 30354, {f: 2, c: 30356}, - {f: 2, c: 30359}, {f: 9, c: 30363}, {f: 9, c: 30373}, {f: 2, c: 30383}, - 30387, {f: 3, c: 30389}, 30393, {f: 4, c: 30395}, {f: 2, c: 30400}, - {f: 2, c: 30403}, 30407, 30409, {f: 2, c: 30411}, 30419, 30421, - {f: 2, c: 30425}, {f: 2, c: 30428}, 30432, 30434, 30438, {f: 6, c: 30440}, - 30448, 30451, {f: 3, c: 30453}, {f: 2, c: 30458}, 30461, {f: 2, c: 30463}, - {f: 2, c: 30466}, {f: 2, c: 30469}, 30474, 30476, {f: 11, c: 30478}, - {f: 4, c: 30491}, 30497, {f: 3, c: 30499}, 30503, {f: 3, c: 30506}, 30510, - {f: 5, c: 30512}, 30521, 30523, {f: 3, c: 30525}, 30530, {f: 3, c: 30532}, - {f: 7, c: 30536}, {f: 8, c: 30546}, {f: 2, c: 30556}, {f: 2, c: 30559}, - 30564, 30567, {f: 2, c: 30569}, {f: 12, c: 30573}, {f: 3, c: 30586}, - {f: 3, c: 30593}, {f: 6, c: 30598}, {f: 2, c: 30607}, {f: 5, c: 30611}, - {f: 5, c: 30617}, 30625, {f: 2, c: 30627}, 30630, 30632, 30635, - {f: 2, c: 30638}, {f: 2, c: 30641}, 30644, {f: 5, c: 30646}, 30654, - {f: 7, c: 30656}, {f: 5, c: 30664}, {f: 9, c: 30670}, {f: 2, c: 30680}, - {f: 5, c: 30685}, 30692, 30694, 30696, 30698, {f: 3, c: 30704}, - {f: 2, c: 30708}, 30711, {f: 4, c: 30713}, {f: 6, c: 30723}, - {f: 2, c: 30730}, {f: 3, c: 30734}, 30739, 30741, 30745, 30747, 30750, - {f: 3, c: 30752}, 30756, 30760, {f: 2, c: 30762}, {f: 2, c: 30766}, - {f: 3, c: 30769}, {f: 2, c: 30773}, 30781, 30783, {f: 2, c: 30785}, 30788, - 30790, {f: 4, c: 30792}, 30797, 30799, 30801, {f: 2, c: 30803}, - {f: 5, c: 30808}, {f: 6, c: 30814}, {f: 3, c: 30821}, 30825, - {f: 7, c: 30832}, {f: 4, c: 30840}, {f: 10, c: 30845}, 30856, - {f: 2, c: 30858}, {f: 2, c: 30863}, 30866, {f: 3, c: 30868}, 30873, - 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{f: 2, c: 31172}, {f: 2, c: 31175}, 31178, 31180, {f: 3, c: 31182}, - {f: 2, c: 31187}, {f: 2, c: 31190}, {f: 6, c: 31193}, {f: 3, c: 31200}, - 31205, 31208, 31210, 31212, 31214, {f: 7, c: 31217}, {f: 2, c: 31225}, - 31228, {f: 2, c: 31230}, 31233, {f: 2, c: 31236}, {f: 4, c: 31239}, 31244, - {f: 5, c: 31247}, {f: 2, c: 31253}, {f: 2, c: 31256}, {f: 3, c: 31259}, - 31263, {f: 2, c: 31265}, {f: 10, c: 31268}, {f: 2, c: 31279}, 31282, - {f: 3, c: 31284}, 31288, 31290, 31294, {f: 5, c: 31297}, {f: 5, c: 31303}, - {f: 2, c: 31311}, {f: 5, c: 31314}, {f: 9, c: 31320}, {f: 6, c: 31331}, - 31338, {f: 4, c: 31340}, {f: 3, c: 31345}, 31349, {f: 4, c: 31355}, 31362, - 31365, 31367, {f: 4, c: 31369}, {f: 3, c: 31374}, {f: 2, c: 31379}, - {f: 3, c: 31385}, 31390, {f: 4, c: 31393}, 31399, 31403, {f: 4, c: 31407}, - {f: 2, c: 31412}, {f: 3, c: 31415}, {f: 4, c: 31419}, {f: 4, c: 31424}, - 31430, 31433, {f: 10, c: 31436}, {f: 2, c: 31447}, {f: 4, c: 31450}, - {f: 2, c: 31457}, 31460, {f: 3, c: 31463}, {f: 2, c: 31467}, 31470, - {f: 6, c: 31472}, {f: 2, c: 31479}, {f: 2, c: 31483}, 31486, - {f: 3, c: 31488}, 31493, 31495, 31497, {f: 3, c: 31500}, 31504, - {f: 2, c: 31506}, {f: 3, c: 31510}, 31514, {f: 2, c: 31516}, 31519, - {f: 3, c: 31521}, 31527, 31529, 31533, {f: 2, c: 31535}, 31538, - {f: 4, c: 31540}, 31545, 31547, 31549, {f: 6, c: 31551}, 31560, 31562, - {f: 2, c: 31565}, 31571, 31573, 31575, 31577, 31580, {f: 2, c: 31582}, - 31585, {f: 4, c: 31587}, {f: 6, c: 31592}, {f: 2, c: 31599}, - {f: 2, c: 31603}, 31606, 31608, 31610, {f: 2, c: 31612}, 31615, - {f: 4, c: 31617}, {f: 5, c: 31622}, 31628, {f: 2, c: 31630}, - {f: 3, c: 31633}, 31638, {f: 4, c: 31640}, {f: 3, c: 31646}, - {f: 3, c: 31651}, {f: 3, c: 31662}, {f: 2, c: 31666}, {f: 3, c: 31669}, - {f: 7, c: 31673}, {f: 2, c: 31682}, 31685, 31688, 31690, {f: 4, c: 31693}, - 31698, {f: 5, c: 31700}, {f: 2, c: 31707}, {f: 3, c: 31710}, - {f: 2, c: 31714}, {f: 2, c: 31719}, {f: 3, c: 31723}, {f: 2, c: 31727}, - 31730, {f: 3, c: 31732}, {f: 4, c: 31736}, 31741, 31743, {f: 6, c: 31745}, - {f: 3, c: 31752}, 31758, {f: 6, c: 31760}, {f: 7, c: 31767}, 31776, 31778, - {f: 2, c: 31780}, {f: 2, c: 31784}, {f: 12, c: 31788}, {f: 4, c: 31801}, - 31810, {f: 8, c: 31812}, {f: 14, c: 31822}, {f: 2, c: 31837}, - {f: 3, c: 31841}, {f: 4, c: 31845}, 31851, 31853, {f: 3, c: 31855}, - {f: 6, c: 31861}, {f: 11, c: 31870}, {f: 7, c: 31882}, {f: 2, c: 31891}, - 31894, {f: 3, c: 31897}, {f: 2, c: 31904}, 31907, {f: 4, c: 31910}, - {f: 3, c: 31915}, {f: 2, c: 31919}, {f: 5, c: 31924}, {f: 2, c: 31930}, - {f: 2, c: 31935}, {f: 3, c: 31938}, 31942, 31945, 31947, {f: 7, c: 31950}, - 31960, {f: 2, c: 31962}, {f: 6, c: 31969}, {f: 6, c: 31977}, 31985, 31987, - 31989, 31991, 31994, {f: 2, c: 31996}, 31999, 32001, 32003, 32012, - {f: 2, c: 32014}, {f: 2, c: 32017}, 32022, 32024, {f: 3, c: 32029}, - {f: 4, c: 32035}, {f: 3, c: 32040}, {f: 3, c: 32044}, {f: 5, c: 32052}, - 32059, {f: 2, c: 32061}, 32065, 32067, 32069, {f: 7, c: 32071}, 32079, - {f: 12, c: 32081}, {f: 2, c: 32095}, {f: 3, c: 32099}, 32103, - {f: 5, c: 32105}, {f: 2, c: 32111}, {f: 2, c: 32116}, 32120, - {f: 7, c: 32122}, 32130, {f: 2, c: 32132}, 32135, {f: 5, c: 32138}, - {f: 3, c: 32144}, {f: 8, c: 32148}, 32157, {f: 3, c: 32159}, - {f: 2, c: 32164}, {f: 4, c: 32167}, 32175, {f: 3, c: 32181}, 32188, - {f: 4, c: 32192}, {f: 2, c: 32197}, {f: 2, c: 32200}, {f: 5, c: 32204}, - 32211, {f: 2, c: 32213}, {f: 3, c: 32218}, 32223, 32226, {f: 2, c: 32228}, - 32231, {f: 2, c: 32234}, {f: 2, c: 32237}, 32240, 32243, 32245, - {f: 2, c: 32247}, 32250, {f: 12, c: 32252}, {f: 4, c: 32268}, - {f: 9, c: 32274}, 32284, {f: 3, c: 32288}, {f: 3, c: 32292}, - {f: 3, c: 32296}, 32300, {f: 2, c: 32303}, 32307, 32312, 32314, 32316, - {f: 2, c: 32319}, {f: 3, c: 32322}, {f: 10, c: 32328}, 32339, - {f: 4, c: 32342}, {f: 3, c: 32347}, {f: 3, c: 32351}, {f: 6, c: 32355}, - 32364, {f: 2, c: 32369}, {f: 5, c: 32372}, {f: 2, c: 32378}, - {f: 3, c: 32383}, {f: 5, c: 32387}, 32393, 32395, 32398, {f: 3, c: 32400}, - 32405, 32407, {f: 2, c: 32409}, {f: 2, c: 32413}, 32430, 32436, - {f: 2, c: 32443}, 32470, 32484, 32492, 32505, 32522, 32528, 32542, 32567, - 32569, {f: 7, c: 32571}, 32579, {f: 6, c: 32582}, 32589, 32591, - {f: 2, c: 32594}, 32598, 32601, {f: 4, c: 32603}, 32608, {f: 5, c: 32611}, - {f: 3, c: 32619}, 32623, 32627, {f: 2, c: 32629}, 32632, {f: 4, c: 32634}, - {f: 2, c: 32639}, {f: 3, c: 32642}, 32647, 32649, 32651, 32653, - {f: 5, c: 32655}, {f: 5, c: 32661}, {f: 2, c: 32667}, 32672, - {f: 2, c: 32674}, 32678, 32680, {f: 5, c: 32682}, 32689, {f: 5, c: 32691}, - {f: 2, c: 32698}, 32702, 32704, {f: 3, c: 32706}, {f: 4, c: 32710}, 32715, - 32717, {f: 3, c: 32719}, 32723, {f: 2, c: 32726}, {f: 6, c: 32729}, - {f: 3, c: 32738}, {f: 2, c: 32743}, {f: 4, c: 32746}, 32751, 32754, - {f: 5, c: 32756}, 32762, {f: 3, c: 32765}, 32770, {f: 4, c: 32775}, - {f: 2, c: 32782}, 32785, 32787, {f: 2, c: 32794}, {f: 3, c: 32797}, 32801, - {f: 2, c: 32803}, 32811, 32813, {f: 2, c: 32815}, 32818, 32820, - {f: 2, c: 32825}, 32828, 32830, {f: 2, c: 32832}, {f: 2, c: 32836}, - {f: 3, c: 32839}, {f: 4, c: 32846}, 32851, 32853, 32855, 32857, - {f: 3, c: 32859}, {f: 10, c: 32863}, {f: 4, c: 32875}, 32884, 32888, - {f: 3, c: 32890}, {f: 2, c: 32897}, 32904, 32906, {f: 6, c: 32909}, - {f: 2, c: 32916}, 32919, 32921, 32926, 32931, {f: 3, c: 32934}, 32940, - 32944, 32947, {f: 2, c: 32949}, {f: 2, c: 32952}, 32955, 32965, - {f: 5, c: 32967}, {f: 7, c: 32975}, 32984, {f: 2, c: 32991}, - {f: 2, c: 32994}, 32998, 33006, 33013, 33015, 33017, 33019, - {f: 4, c: 33022}, {f: 2, c: 33027}, {f: 2, c: 33031}, {f: 2, c: 33035}, - 33045, 33047, 33049, {f: 2, c: 33052}, {f: 13, c: 33055}, {f: 2, c: 33069}, - 33072, {f: 3, c: 33075}, 33079, {f: 4, c: 33082}, {f: 7, c: 33087}, 33095, - 33097, 33101, 33103, 33106, {f: 2, c: 33111}, {f: 5, c: 33115}, - {f: 3, c: 33122}, 33128, 33130, 33132, 33135, {f: 2, c: 33138}, - {f: 3, c: 33141}, 33153, {f: 5, c: 33155}, 33161, {f: 4, c: 33163}, 33168, - {f: 6, c: 33170}, 33177, {f: 2, c: 33182}, {f: 2, c: 33185}, - {f: 2, c: 33188}, 33191, {f: 8, c: 33195}, {f: 6, c: 33204}, 33212, - {f: 2, c: 33220}, {f: 2, c: 33223}, 33227, 33230, {f: 8, c: 33232}, 33241, - {f: 4, c: 33243}, {f: 2, c: 33249}, {f: 3, c: 33252}, 33257, 33259, - {f: 5, c: 33262}, {f: 5, c: 33269}, 33277, 33279, 33283, 33291, - {f: 2, c: 33294}, 33297, 33299, {f: 6, c: 33301}, 33309, 33312, - {f: 4, c: 33316}, 33321, 33326, 33330, 33338, {f: 2, c: 33340}, - {f: 5, c: 33343}, {f: 2, c: 33349}, 33352, 33354, {f: 3, c: 33356}, - {f: 8, c: 33360}, {f: 4, c: 33371}, {f: 4, c: 33376}, 33381, 33383, - {f: 2, c: 33385}, {f: 2, c: 33388}, {f: 2, c: 33397}, [12171, 33400], - {f: 2, c: 33403}, {f: 2, c: 33408}, 33411, {f: 3, c: 33413}, 33417, 33420, - 33424, {f: 4, c: 33427}, {f: 2, c: 33434}, 33438, 33440, {f: 2, c: 33442}, - 33447, 33458, {f: 2, c: 33461}, 33466, 33468, {f: 2, c: 33471}, - {f: 2, c: 33474}, {f: 2, c: 33477}, 33481, 33488, 33494, {f: 2, c: 33497}, - 33501, 33506, {f: 3, c: 33512}, {f: 3, c: 33516}, 33520, {f: 2, c: 33522}, - {f: 2, c: 33525}, 33528, 33530, {f: 5, c: 33532}, {f: 2, c: 33546}, 33549, - 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{f: 3, c: 37577}, {f: 2, c: 37581}, {f: 2, c: 37584}, {f: 10, c: 37587}, - 37598, {f: 3, c: 37600}, 37607, 37609, {f: 2, c: 37611}, {f: 4, c: 37618}, - 37623, {f: 3, c: 37625}, {f: 4, c: 37629}, {f: 4, c: 37634}, - {f: 7, c: 37641}, 37649, {f: 2, c: 37651}, {f: 2, c: 37654}, - {f: 3, c: 37660}, 37665, {f: 3, c: 37667}, 37671, {f: 2, c: 37673}, - {f: 2, c: 37676}, {f: 2, c: 37680}, {f: 2, c: 37684}, 37687, - {f: 5, c: 37689}, 37695, 37698, {f: 2, c: 37700}, {f: 3, c: 37704}, 37708, - {f: 6, c: 37710}, {f: 3, c: 37717}, {f: 2, c: 37721}, {f: 8, c: 37724}, - {f: 3, c: 37734}, 37739, {f: 3, c: 37741}, {f: 4, c: 37745}, - {f: 3, c: 37751}, {f: 3, c: 37755}, {f: 3, c: 37759}, 37763, - {f: 2, c: 37765}, {f: 2, c: 37768}, {f: 4, c: 37771}, {f: 6, c: 37776}, - 37783, {f: 9, c: 37785}, {f: 2, c: 37796}, 37800, 37803, 37805, 37807, - {f: 2, c: 37809}, 37812, {f: 2, c: 37814}, {f: 6, c: 37817}, - {f: 3, c: 37824}, {f: 3, c: 37828}, 37833, 37835, {f: 3, c: 37838}, - {f: 4, c: 37842}, {f: 3, c: 37849}, 37856, 37859, {f: 3, c: 37861}, - {f: 12, c: 37865}, 37878, 37880, {f: 9, c: 37882}, {f: 7, c: 37892}, - {f: 4, c: 37900}, 37905, {f: 3, c: 37909}, {f: 3, c: 37914}, - {f: 2, c: 37918}, {f: 5, c: 37921}, {f: 5, c: 37929}, {f: 3, c: 37935}, - 37940, {f: 2, c: 37942}, 37945, {f: 3, c: 37947}, {f: 4, c: 37952}, - {f: 5, c: 37957}, 37963, {f: 5, c: 37965}, 37971, {f: 11, c: 37973}, - {f: 2, c: 37985}, 37988, {f: 5, c: 37990}, 37996, {f: 2, c: 37998}, 38001, - {f: 4, c: 38003}, 38008, {f: 2, c: 38010}, {f: 5, c: 38016}, 38033, 38038, - 38040, 38087, 38095, {f: 2, c: 38099}, 38106, 38118, 38139, 38172, 38176, - 38183, 38195, 38205, 38211, 38216, 38219, 38229, 38234, 38240, 38254, - {f: 2, c: 38260}, {f: 7, c: 38264}, 38273, {f: 2, c: 38276}, - {f: 2, c: 38279}, 38282, 38285, 38288, 38290, {f: 3, c: 38293}, - {f: 8, c: 38297}, 38306, {f: 2, c: 38310}, 38314, {f: 4, c: 38318}, - {f: 3, c: 38323}, {f: 2, c: 38327}, 38330, {f: 3, c: 38336}, - {f: 2, c: 38340}, 38343, 38345, {f: 3, c: 38349}, {f: 3, c: 38353}, - {f: 5, c: 38359}, 38365, {f: 2, c: 38367}, {f: 2, c: 38371}, - {f: 2, c: 38374}, 38380, 38399, 38407, 38419, 38424, 38427, 38430, 38432, - {f: 7, c: 38435}, {f: 3, c: 38443}, {f: 2, c: 38447}, {f: 4, c: 38455}, - 38462, 38465, 38467, 38474, {f: 2, c: 38478}, {f: 3, c: 38481}, - {f: 2, c: 38486}, {f: 2, c: 38489}, 38492, 38494, 38496, {f: 2, c: 38501}, - 38507, {f: 3, c: 38509}, 38513, {f: 4, c: 38521}, {f: 7, c: 38526}, 38535, - 38537, 38540, {f: 3, c: 38545}, 38550, 38554, {f: 10, c: 38557}, 38569, - {f: 5, c: 38571}, 38578, 38581, 38583, 38586, 38591, {f: 2, c: 38594}, - 38600, {f: 2, c: 38602}, {f: 2, c: 38608}, {f: 2, c: 38611}, - {f: 2, c: 38615}, 38618, {f: 3, c: 38621}, 38625, {f: 4, c: 38628}, - {f: 4, c: 38635}, {f: 2, c: 38640}, {f: 2, c: 38644}, 38648, 38650, - {f: 2, c: 38652}, 38655, {f: 2, c: 38658}, 38661, {f: 3, c: 38666}, - {f: 3, c: 38672}, {f: 2, c: 38676}, {f: 5, c: 38679}, 38685, - {f: 8, c: 38687}, {f: 2, c: 38696}, {f: 2, c: 38699}, {f: 2, c: 38702}, - 38705, {f: 5, c: 38707}, {f: 3, c: 38714}, {f: 3, c: 38719}, 38723, - {f: 3, c: 38725}, {f: 8, c: 38729}, [12205, 38737], {f: 2, c: 38740}, - {f: 2, c: 38743}, {f: 2, c: 38748}, 38751, {f: 2, c: 38755}, - {f: 2, c: 38758}, {f: 9, c: 38762}, 38773, {f: 5, c: 38775}, - {f: 8, c: 38781}, {f: 5, c: 38790}, 38796, 38798, 38800, 38803, - {f: 3, c: 38805}, {f: 7, c: 38809}, {f: 2, c: 38817}, {f: 2, c: 38820}, - {f: 4, c: 38823}, 38828, 38830, {f: 2, c: 38832}, 38835, {f: 8, c: 38837}, - {f: 5, c: 38846}, {f: 2, c: 38852}, {f: 2, c: 38855}, 38858, - {f: 6, c: 38861}, {f: 5, c: 38868}, {f: 2, c: 38874}, 38877, - {f: 7, c: 38879}, 38888, {f: 5, c: 38894}, 38900, {f: 8, c: 38903}, 38912, - 38916, 38921, 38923, 38925, {f: 3, c: 38932}, {f: 3, c: 38937}, - {f: 4, c: 38941}, {f: 2, c: 38946}, 38949, {f: 6, c: 38951}, - {f: 2, c: 38958}, {f: 6, c: 38961}, {f: 2, c: 38969}, 38972, - {f: 8, c: 38974}, {f: 5, c: 38983}, {f: 4, c: 38991}, {f: 3, c: 38997}, - 39002, {f: 2, c: 39004}, {f: 3, c: 39007}, {f: 2, c: 39011}, 39014, - {f: 3, c: 39016}, {f: 2, c: 39021}, 39026, 39051, 39054, 39058, 39061, - 39065, 39075, {f: 5, c: 39081}, 39088, 39090, {f: 2, c: 39092}, - {f: 5, c: 39095}, {f: 7, c: 39101}, 39109, 39111, {f: 5, c: 39113}, - {f: 2, c: 39119}, 39124, {f: 2, c: 39126}, {f: 2, c: 39132}, 39137, - {f: 4, c: 39139}, 39148, 39150, {f: 2, c: 39152}, 39155, {f: 7, c: 39157}, - {f: 4, c: 39167}, 39172, {f: 3, c: 39174}, 39179, {f: 2, c: 39182}, - {f: 4, c: 39188}, {f: 2, c: 39193}, {f: 2, c: 39196}, {f: 2, c: 39199}, - {f: 6, c: 39202}, {f: 5, c: 39209}, {f: 4, c: 39215}, {f: 3, c: 39220}, - {f: 4, c: 39224}, 39229, {f: 3, c: 39232}, 39236, {f: 2, c: 39238}, - {f: 4, c: 39245}, 39251, 39254, {f: 4, c: 39256}, 39261, {f: 3, c: 39263}, - 39268, 39270, 39283, {f: 2, c: 39288}, 39291, 39294, {f: 2, c: 39298}, - 39305, 39308, 39310, {f: 11, c: 39322}, {f: 2, c: 39334}, {f: 3, c: 39337}, - {f: 2, c: 39343}, 39346, {f: 12, c: 39349}, {f: 14, c: 39362}, 39379, - {f: 2, c: 39382}, 39386, 39388, 39390, 39392, {f: 10, c: 39395}, - {f: 3, c: 39406}, {f: 13, c: 39410}, 39424, {f: 3, c: 39426}, - {f: 7, c: 39430}, {f: 6, c: 39440}, {f: 2, c: 39447}, {f: 17, c: 39450}, - 39468, 39471, {f: 5, c: 39473}, {f: 5, c: 39481}, 39487, {f: 4, c: 39494}, - {f: 2, c: 39499}, 39502, {f: 5, c: 39504}, 39510, {f: 2, c: 39512}, - {f: 3, c: 39516}, {f: 2, c: 39520}, 39523, {f: 4, c: 39526}, 39531, 39538, - 39555, 39561, {f: 2, c: 39565}, {f: 2, c: 39572}, 39577, 39590, - {f: 6, c: 39593}, {f: 4, c: 39602}, 39609, 39611, {f: 3, c: 39613}, - {f: 2, c: 39619}, {f: 5, c: 39622}, {f: 2, c: 39629}, 39632, 39639, - {f: 6, c: 39641}, 39648, {f: 4, c: 39650}, {f: 4, c: 39655}, 39660, - {f: 9, c: 39664}, 39674, {f: 7, c: 39676}, {f: 2, c: 39684}, 39687, - {f: 4, c: 39689}, 39694, {f: 3, c: 39696}, {f: 6, c: 39700}, - {f: 4, c: 39707}, {f: 2, c: 39712}, 39716, 39718, 39720, {f: 4, c: 39722}, - 39728, {f: 8, c: 39731}, {f: 4, c: 39741}, 39750, {f: 3, c: 39754}, 39760, - {f: 2, c: 39762}, {f: 3, c: 39765}, 39769, {f: 20, c: 39771}, - {f: 4, c: 39792}, {f: 2, c: 39797}, {f: 9, c: 39800}, 39810, - {f: 10, c: 39812}, 39823, {f: 7, c: 39827}, {f: 2, c: 39835}, - {f: 11, c: 39839}, 39852, {f: 17, c: 39855}, {f: 5, c: 39874}, 39880, - {f: 9, c: 39883}, 39893, {f: 4, c: 39895}, 39900, {f: 3, c: 39902}, 39907, - {f: 2, c: 39909}, 39913, {f: 4, c: 39916}, {f: 3, c: 39921}, - {f: 8, c: 39925}, 39934, {f: 8, c: 39936}, {f: 3, c: 39946}, - {f: 2, c: 39950}, 39953, {f: 12, c: 39956}, {f: 2, c: 39969}, 39972, - {f: 2, c: 39974}, {f: 3, c: 39978}, {f: 3, c: 39982}, 39988, 39990, 39992, - 39994, {f: 2, c: 39996}, {f: 6, c: 39999}, {f: 2, c: 40006}, - {f: 8, c: 40010}, 40019, 40021, {f: 4, c: 40025}, 40030, {f: 7, c: 40032}, - {f: 5, c: 40040}, {f: 10, c: 40046}, 40057, 40059, {f: 2, c: 40061}, 40064, - {f: 2, c: 40067}, {f: 2, c: 40073}, 40076, 40079, 40083, {f: 4, c: 40086}, - 40093, 40106, 40108, 40111, 40121, {f: 5, c: 40126}, {f: 2, c: 40136}, - {f: 2, c: 40145}, {f: 2, c: 40154}, {f: 2, c: 40160}, {f: 2, c: 40163}, - {f: 3, c: 40166}, {f: 2, c: 40170}, {f: 6, c: 40173}, 40181, - {f: 15, c: 40183}, 40200, {f: 11, c: 40202}, {f: 5, c: 40214}, 40220, - 40222, {f: 3, c: 40224}, {f: 2, c: 40228}, 40231, {f: 6, c: 40233}, - {f: 10, c: 40241}, {f: 3, c: 40252}, {f: 2, c: 40256}, {f: 14, c: 40259}, - {f: 8, c: 40276}, {f: 2, c: 40286}, {f: 8, c: 40290}, 40299, - {f: 2, c: 40301}, {f: 2, c: 40304}, {f: 20, c: 40307}, 40328, - {f: 9, c: 40330}, {f: 4, c: 40340}, 40345, {f: 10, c: 40347}, - {f: 3, c: 40358}, {f: 5, c: 40362}, {f: 4, c: 40368}, {f: 6, c: 40373}, - {f: 3, c: 40381}, 40385, 40387, {f: 14, c: 40389}, {f: 3, c: 40404}, 40408, - {f: 10, c: 40411}, {f: 8, c: 40423}, {f: 2, c: 40432}, {f: 4, c: 40436}, - {f: 17, c: 40443}, {f: 8, c: 40461}, {f: 4, c: 40470}, 40476, 40484, 40487, - 40494, 40496, 40500, {f: 2, c: 40507}, 40512, 40525, 40528, - {f: 3, c: 40530}, 40534, 40537, 40541, {f: 4, c: 40543}, 40549, - {f: 2, c: 40558}, 40562, 40564, {f: 3, c: 40566}, 40571, {f: 2, c: 40576}, - {f: 4, c: 40579}, {f: 2, c: 40585}, {f: 6, c: 40588}, {f: 3, c: 40596}, - {f: 5, c: 40600}, 40606, {f: 5, c: 40608}, {f: 2, c: 40615}, - {f: 5, c: 40618}, {f: 4, c: 40624}, {f: 2, c: 40630}, {f: 2, c: 40633}, - 40636, {f: 4, c: 40639}, [12232, 40643], {f: 4, c: 40645}, - {f: 2, c: 40650}, 40656, {f: 2, c: 40658}, {f: 3, c: 40661}, - {f: 2, c: 40665}, 40673, {f: 2, c: 40675}, 40678, {f: 4, c: 40683}, - {f: 2, c: 40688}, 40691, {f: 2, c: 40693}, 40696, 40698, {f: 9, c: 40704}, - 40714, 40716, 40719, {f: 2, c: 40721}, 40724, 40726, 40728, - {f: 6, c: 40730}, 40737, {f: 9, c: 40739}, {f: 2, c: 40749}, - {f: 7, c: 40752}, 40760, 40762, 40764, {f: 5, c: 40767}, {f: 5, c: 40773}, - {f: 3, c: 40780}, 40787, {f: 4, c: 40789}, {f: 2, c: 40794}, - {f: 2, c: 40797}, 40802, {f: 2, c: 40804}, {f: 3, c: 40807}, 40811, - {f: 5, c: 40813}, {f: 4, c: 40819}, {f: 7, c: 40824}, {f: 2, c: 40833}, - {f: 2, c: 40846}, {f: 3, c: 40849}, {f: 3, c: 40854}, {f: 2, c: 40861}, - {f: 5, c: 40865}, 63788, {f: 3, c: 64013}, 64017, {f: 2, c: 64019}, 64024, - {f: 3, c: 64031}, {f: 2, c: 64035}, {f: 3, c: 64039}, 11905, - [59414, 131207], [59415, 131209], [59416, 131276], 11908, 13427, 13383, - 11912, 11915, 59422, 13726, 13850, 13838, 11916, 11927, 14702, 14616, - 59430, 14799, 14815, 14963, 14800, {f: 2, c: 59435}, 15182, 15470, 15584, - 11943, [59441, 136663], 59442, 11946, 16470, 16735, 11950, 17207, 11955, - {f: 2, c: 11958}, [59451, 141711], 17329, 17324, 11963, 17373, 17622, - 18017, 17996, [59459, 132361], 18211, 18217, 18300, 18317, 11978, 18759, - 18810, 18813, {f: 2, c: 18818}, {f: 2, c: 18821}, 18847, 18843, 18871, - 18870, [59476, 133533], [59477, 147966], 19619, {f: 3, c: 19615}, 19575, - 19618, {f: 7, c: 19731}, 19886, 59492, {s: 226}, 8364, 165, 0, 0, 12351, - {s: 17}, 12436, {s: 14}, 12535, 12537, 12536, 12538, 0, {f: 3, c: 12339}, - {f: 3, c: 12344}, {f: 3, c: 12586}, {f: 24, c: 12704}, 11904, - {f: 2, c: 11906}, {f: 3, c: 11909}, {f: 2, c: 11913}, {f: 10, c: 11917}, - {f: 2, c: 11928}, {f: 12, c: 11931}, {f: 2, c: 11944}, {f: 3, c: 11947}, - {f: 4, c: 11951}, {f: 2, c: 11956}, {f: 3, c: 11960}, {f: 14, c: 11964}, - {f: 41, c: 11979}, {f: 71, c: 13312}, {f: 43, c: 13384}, - {f: 298, c: 13428}, {f: 111, c: 13727}, {f: 11, c: 13839}, - {f: 765, c: 13851}, {f: 85, c: 14617}, {f: 96, c: 14703}, - {f: 14, c: 14801}, {f: 147, c: 14816}, {f: 218, c: 14964}, - {f: 287, c: 15183}, {f: 113, c: 15471}, {f: 885, c: 15585}, - {f: 264, c: 16471}, {f: 471, c: 16736}, {f: 116, c: 17208}, - {f: 4, c: 17325}, {f: 43, c: 17330}, {f: 248, c: 17374}, - {f: 373, c: 17623}, {f: 20, c: 17997}, {f: 193, c: 18018}, - {f: 5, c: 18212}, {f: 82, c: 18218}, {f: 16, c: 18301}, {f: 441, c: 18318}, - {f: 50, c: 18760}, {f: 2, c: 18811}, {f: 4, c: 18814}, 18820, - {f: 20, c: 18823}, {f: 3, c: 18844}, {f: 22, c: 18848}, {f: 703, c: 18872}, - {f: 39, c: 19576}, {f: 111, c: 19620}, {f: 148, c: 19738}, - {f: 7, c: 19887}] -}; +var DEFAULT_ICON_SIZE = 22; // px +var SUPPORTED_TYPES = ['Link', 'Text', 'Widget']; +var Annotation = (function AnnotationClosure() { + // 12.5.5: Algorithm: Appearance streams + function getTransformMatrix(rect, bbox, matrix) { + var bounds = Util.getAxialAlignedBoundingBox(bbox, matrix); + var minX = bounds[0]; + var minY = bounds[1]; + var maxX = bounds[2]; + var maxY = bounds[3]; + + if (minX === maxX || minY === maxY) { + // From real-life file, bbox was [0, 0, 0, 0]. In this case, + // just apply the transform for rect + return [1, 0, 0, 1, rect[0], rect[1]]; + } + + var xRatio = (rect[2] - rect[0]) / (maxX - minX); + var yRatio = (rect[3] - rect[1]) / (maxY - minY); + return [ + xRatio, + 0, + 0, + yRatio, + rect[0] - minX * xRatio, + rect[1] - minY * yRatio + ]; + } + + function getDefaultAppearance(dict) { + var appearanceState = dict.get('AP'); + if (!isDict(appearanceState)) { + return; + } + + var appearance; + var appearances = appearanceState.get('N'); + if (isDict(appearances)) { + var as = dict.get('AS'); + if (as && appearances.has(as.name)) { + appearance = appearances.get(as.name); + } + } else { + appearance = appearances; + } + return appearance; + } + + function Annotation(params) { + var dict = params.dict; + var data = this.data = {}; + + data.subtype = dict.get('Subtype').name; + var rect = dict.get('Rect') || [0, 0, 0, 0]; + data.rect = Util.normalizeRect(rect); + data.annotationFlags = dict.get('F'); + + var color = dict.get('C'); + if (isArray(color) && color.length === 3) { + // TODO(mack): currently only supporting rgb; need support different + // colorspaces + data.color = color; + } else { + data.color = [0, 0, 0]; + } + + // Some types of annotations have border style dict which has more + // info than the border array + if (dict.has('BS')) { + var borderStyle = dict.get('BS'); + data.borderWidth = borderStyle.has('W') ? borderStyle.get('W') : 1; + } else { + var borderArray = dict.get('Border') || [0, 0, 1]; + data.borderWidth = borderArray[2] || 0; + + // TODO: implement proper support for annotations with line dash patterns. + var dashArray = borderArray[3]; + if (data.borderWidth > 0 && dashArray) { + if (!isArray(dashArray)) { + // Ignore the border if dashArray is not actually an array, + // this is consistent with the behaviour in Adobe Reader. + data.borderWidth = 0; + } else { + var dashArrayLength = dashArray.length; + if (dashArrayLength > 0) { + // According to the PDF specification: the elements in a dashArray + // shall be numbers that are nonnegative and not all equal to zero. + var isInvalid = false; + var numPositive = 0; + for (var i = 0; i < dashArrayLength; i++) { + var validNumber = (+dashArray[i] >= 0); + if (!validNumber) { + isInvalid = true; + break; + } else if (dashArray[i] > 0) { + numPositive++; + } + } + if (isInvalid || numPositive === 0) { + data.borderWidth = 0; + } + } + } + } + } + + this.appearance = getDefaultAppearance(dict); + data.hasAppearance = !!this.appearance; + data.id = params.ref.num; + } + + Annotation.prototype = { + + getData: function Annotation_getData() { + return this.data; + }, + + isInvisible: function Annotation_isInvisible() { + var data = this.data; + if (data && SUPPORTED_TYPES.indexOf(data.subtype) !== -1) { + return false; + } else { + return !!(data && + data.annotationFlags && // Default: not invisible + data.annotationFlags & 0x1); // Invisible + } + }, + + isViewable: function Annotation_isViewable() { + var data = this.data; + return !!(!this.isInvisible() && + data && + (!data.annotationFlags || + !(data.annotationFlags & 0x22)) && // Hidden or NoView + data.rect); // rectangle is necessary + }, + + isPrintable: function Annotation_isPrintable() { + var data = this.data; + return !!(!this.isInvisible() && + data && + data.annotationFlags && // Default: not printable + data.annotationFlags & 0x4 && // Print + !(data.annotationFlags & 0x2) && // Hidden + data.rect); // rectangle is necessary + }, + + loadResources: function Annotation_loadResources(keys) { + return new Promise(function (resolve, reject) { + this.appearance.dict.getAsync('Resources').then(function (resources) { + if (!resources) { + resolve(); + return; + } + var objectLoader = new ObjectLoader(resources.map, + keys, + resources.xref); + objectLoader.load().then(function() { + resolve(resources); + }, reject); + }, reject); + }.bind(this)); + }, + + getOperatorList: function Annotation_getOperatorList(evaluator) { + + if (!this.appearance) { + return Promise.resolve(new OperatorList()); + } + + var data = this.data; + + var appearanceDict = this.appearance.dict; + var resourcesPromise = this.loadResources([ + 'ExtGState', + 'ColorSpace', + 'Pattern', + 'Shading', + 'XObject', + 'Font' + // ProcSet + // Properties + ]); + var bbox = appearanceDict.get('BBox') || [0, 0, 1, 1]; + var matrix = appearanceDict.get('Matrix') || [1, 0, 0, 1, 0 ,0]; + var transform = getTransformMatrix(data.rect, bbox, matrix); + var self = this; + + return resourcesPromise.then(function(resources) { + var opList = new OperatorList(); + opList.addOp(OPS.beginAnnotation, [data.rect, transform, matrix]); + return evaluator.getOperatorList(self.appearance, resources, opList). + then(function () { + opList.addOp(OPS.endAnnotation, []); + self.appearance.reset(); + return opList; + }); + }); + } + }; + + Annotation.getConstructor = + function Annotation_getConstructor(subtype, fieldType) { + + if (!subtype) { + return; + } + + // TODO(mack): Implement FreeText annotations + if (subtype === 'Link') { + return LinkAnnotation; + } else if (subtype === 'Text') { + return TextAnnotation; + } else if (subtype === 'Widget') { + if (!fieldType) { + return; + } + + if (fieldType === 'Tx') { + return TextWidgetAnnotation; + } else { + return WidgetAnnotation; + } + } else { + return Annotation; + } + }; + + Annotation.fromRef = function Annotation_fromRef(xref, ref) { + + var dict = xref.fetchIfRef(ref); + if (!isDict(dict)) { + return; + } + + var subtype = dict.get('Subtype'); + subtype = isName(subtype) ? subtype.name : ''; + if (!subtype) { + return; + } + + var fieldType = Util.getInheritableProperty(dict, 'FT'); + fieldType = isName(fieldType) ? fieldType.name : ''; + + var Constructor = Annotation.getConstructor(subtype, fieldType); + if (!Constructor) { + return; + } + + var params = { + dict: dict, + ref: ref, + }; + + var annotation = new Constructor(params); + + if (annotation.isViewable() || annotation.isPrintable()) { + return annotation; + } else { + if (SUPPORTED_TYPES.indexOf(subtype) === -1) { + warn('unimplemented annotation type: ' + subtype); + } + } + }; + + Annotation.appendToOperatorList = function Annotation_appendToOperatorList( + annotations, opList, pdfManager, partialEvaluator, intent) { + + function reject(e) { + annotationsReadyCapability.reject(e); + } + + var annotationsReadyCapability = createPromiseCapability(); + + var annotationPromises = []; + for (var i = 0, n = annotations.length; i < n; ++i) { + if (intent === 'display' && annotations[i].isViewable() || + intent === 'print' && annotations[i].isPrintable()) { + annotationPromises.push( + annotations[i].getOperatorList(partialEvaluator)); + } + } + Promise.all(annotationPromises).then(function(datas) { + opList.addOp(OPS.beginAnnotations, []); + for (var i = 0, n = datas.length; i < n; ++i) { + var annotOpList = datas[i]; + opList.addOpList(annotOpList); + } + opList.addOp(OPS.endAnnotations, []); + annotationsReadyCapability.resolve(); + }, reject); + + return annotationsReadyCapability.promise; + }; + + return Annotation; +})(); + +var WidgetAnnotation = (function WidgetAnnotationClosure() { + + function WidgetAnnotation(params) { + Annotation.call(this, params); + + var dict = params.dict; + var data = this.data; + + data.fieldValue = stringToPDFString( + Util.getInheritableProperty(dict, 'V') || ''); + data.alternativeText = stringToPDFString(dict.get('TU') || ''); + data.defaultAppearance = Util.getInheritableProperty(dict, 'DA') || ''; + var fieldType = Util.getInheritableProperty(dict, 'FT'); + data.fieldType = isName(fieldType) ? fieldType.name : ''; + data.fieldFlags = Util.getInheritableProperty(dict, 'Ff') || 0; + this.fieldResources = Util.getInheritableProperty(dict, 'DR') || Dict.empty; + + // Building the full field name by collecting the field and + // its ancestors 'T' data and joining them using '.'. + var fieldName = []; + var namedItem = dict; + var ref = params.ref; + while (namedItem) { + var parent = namedItem.get('Parent'); + var parentRef = namedItem.getRaw('Parent'); + var name = namedItem.get('T'); + if (name) { + fieldName.unshift(stringToPDFString(name)); + } else if (parent && ref) { + // The field name is absent, that means more than one field + // with the same name may exist. Replacing the empty name + // with the '`' plus index in the parent's 'Kids' array. + // This is not in the PDF spec but necessary to id the + // the input controls. + var kids = parent.get('Kids'); + var j, jj; + for (j = 0, jj = kids.length; j < jj; j++) { + var kidRef = kids[j]; + if (kidRef.num === ref.num && kidRef.gen === ref.gen) { + break; + } + } + fieldName.unshift('`' + j); + } + namedItem = parent; + ref = parentRef; + } + data.fullName = fieldName.join('.'); + } + + var parent = Annotation.prototype; + Util.inherit(WidgetAnnotation, Annotation, { + isViewable: function WidgetAnnotation_isViewable() { + if (this.data.fieldType === 'Sig') { + warn('unimplemented annotation type: Widget signature'); + return false; + } + + return parent.isViewable.call(this); + } + }); + + return WidgetAnnotation; +})(); + +var TextWidgetAnnotation = (function TextWidgetAnnotationClosure() { + function TextWidgetAnnotation(params) { + WidgetAnnotation.call(this, params); + + this.data.textAlignment = Util.getInheritableProperty(params.dict, 'Q'); + this.data.annotationType = AnnotationType.WIDGET; + this.data.hasHtml = !this.data.hasAppearance && !!this.data.fieldValue; + } + + Util.inherit(TextWidgetAnnotation, WidgetAnnotation, { + getOperatorList: function TextWidgetAnnotation_getOperatorList(evaluator) { + if (this.appearance) { + return Annotation.prototype.getOperatorList.call(this, evaluator); + } + + var opList = new OperatorList(); + var data = this.data; + + // Even if there is an appearance stream, ignore it. This is the + // behaviour used by Adobe Reader. + if (!data.defaultAppearance) { + return Promise.resolve(opList); + } + + var stream = new Stream(stringToBytes(data.defaultAppearance)); + return evaluator.getOperatorList(stream, this.fieldResources, opList). + then(function () { + return opList; + }); + } + }); + + return TextWidgetAnnotation; +})(); + +var InteractiveAnnotation = (function InteractiveAnnotationClosure() { + function InteractiveAnnotation(params) { + Annotation.call(this, params); + + this.data.hasHtml = true; + } + + Util.inherit(InteractiveAnnotation, Annotation, { }); + + return InteractiveAnnotation; +})(); + +var TextAnnotation = (function TextAnnotationClosure() { + function TextAnnotation(params) { + InteractiveAnnotation.call(this, params); + + var dict = params.dict; + var data = this.data; + + var content = dict.get('Contents'); + var title = dict.get('T'); + data.annotationType = AnnotationType.TEXT; + data.content = stringToPDFString(content || ''); + data.title = stringToPDFString(title || ''); + + if (data.hasAppearance) { + data.name = 'NoIcon'; + } else { + data.rect[1] = data.rect[3] - DEFAULT_ICON_SIZE; + data.rect[2] = data.rect[0] + DEFAULT_ICON_SIZE; + data.name = dict.has('Name') ? dict.get('Name').name : 'Note'; + } + + if (dict.has('C')) { + data.hasBgColor = true; + } + } + + Util.inherit(TextAnnotation, InteractiveAnnotation, { }); + + return TextAnnotation; +})(); + +var LinkAnnotation = (function LinkAnnotationClosure() { + function LinkAnnotation(params) { + InteractiveAnnotation.call(this, params); + + var dict = params.dict; + var data = this.data; + data.annotationType = AnnotationType.LINK; + + var action = dict.get('A'); + if (action) { + var linkType = action.get('S').name; + if (linkType === 'URI') { + var url = action.get('URI'); + if (isName(url)) { + // Some bad PDFs do not put parentheses around relative URLs. + url = '/' + url.name; + } else if (url) { + url = addDefaultProtocolToUrl(url); + } + // TODO: pdf spec mentions urls can be relative to a Base + // entry in the dictionary. + if (!isValidUrl(url, false)) { + url = ''; + } + data.url = url; + } else if (linkType === 'GoTo') { + data.dest = action.get('D'); + } else if (linkType === 'GoToR') { + var urlDict = action.get('F'); + if (isDict(urlDict)) { + // We assume that the 'url' is a Filspec dictionary + // and fetch the url without checking any further + url = urlDict.get('F') || ''; + } + + // TODO: pdf reference says that GoToR + // can also have 'NewWindow' attribute + if (!isValidUrl(url, false)) { + url = ''; + } + data.url = url; + data.dest = action.get('D'); + } else if (linkType === 'Named') { + data.action = action.get('N').name; + } else { + warn('unrecognized link type: ' + linkType); + } + } else if (dict.has('Dest')) { + // simple destination link + var dest = dict.get('Dest'); + data.dest = isName(dest) ? dest.name : dest; + } + } + + // Lets URLs beginning with 'www.' default to using the 'http://' protocol. + function addDefaultProtocolToUrl(url) { + if (url && url.indexOf('www.') === 0) { + return ('http://' + url); + } + return url; + } + + Util.inherit(LinkAnnotation, InteractiveAnnotation, { + hasOperatorList: function LinkAnnotation_hasOperatorList() { + return false; + } + }); + + return LinkAnnotation; +})(); + + +var PDFFunction = (function PDFFunctionClosure() { + var CONSTRUCT_SAMPLED = 0; + var CONSTRUCT_INTERPOLATED = 2; + var CONSTRUCT_STICHED = 3; + var CONSTRUCT_POSTSCRIPT = 4; + + return { + getSampleArray: function PDFFunction_getSampleArray(size, outputSize, bps, + str) { + var i, ii; + var length = 1; + for (i = 0, ii = size.length; i < ii; i++) { + length *= size[i]; + } + length *= outputSize; + + var array = new Array(length); + var codeSize = 0; + var codeBuf = 0; + // 32 is a valid bps so shifting won't work + var sampleMul = 1.0 / (Math.pow(2.0, bps) - 1); + + var strBytes = str.getBytes((length * bps + 7) / 8); + var strIdx = 0; + for (i = 0; i < length; i++) { + while (codeSize < bps) { + codeBuf <<= 8; + codeBuf |= strBytes[strIdx++]; + codeSize += 8; + } + codeSize -= bps; + array[i] = (codeBuf >> codeSize) * sampleMul; + codeBuf &= (1 << codeSize) - 1; + } + return array; + }, + + getIR: function PDFFunction_getIR(xref, fn) { + var dict = fn.dict; + if (!dict) { + dict = fn; + } + + var types = [this.constructSampled, + null, + this.constructInterpolated, + this.constructStiched, + this.constructPostScript]; + + var typeNum = dict.get('FunctionType'); + var typeFn = types[typeNum]; + if (!typeFn) { + error('Unknown type of function'); + } + + return typeFn.call(this, fn, dict, xref); + }, + + fromIR: function PDFFunction_fromIR(IR) { + var type = IR[0]; + switch (type) { + case CONSTRUCT_SAMPLED: + return this.constructSampledFromIR(IR); + case CONSTRUCT_INTERPOLATED: + return this.constructInterpolatedFromIR(IR); + case CONSTRUCT_STICHED: + return this.constructStichedFromIR(IR); + //case CONSTRUCT_POSTSCRIPT: + default: + return this.constructPostScriptFromIR(IR); + } + }, + + parse: function PDFFunction_parse(xref, fn) { + var IR = this.getIR(xref, fn); + return this.fromIR(IR); + }, + + parseArray: function PDFFunction_parseArray(xref, fnObj) { + if (!isArray(fnObj)) { + // not an array -- parsing as regular function + return this.parse(xref, fnObj); + } + + var fnArray = []; + for (var j = 0, jj = fnObj.length; j < jj; j++) { + var obj = xref.fetchIfRef(fnObj[j]); + fnArray.push(PDFFunction.parse(xref, obj)); + } + return function (src, srcOffset, dest, destOffset) { + for (var i = 0, ii = fnArray.length; i < ii; i++) { + fnArray[i](src, srcOffset, dest, destOffset + i); + } + }; + }, + + constructSampled: function PDFFunction_constructSampled(str, dict) { + function toMultiArray(arr) { + var inputLength = arr.length; + var out = []; + var index = 0; + for (var i = 0; i < inputLength; i += 2) { + out[index] = [arr[i], arr[i + 1]]; + ++index; + } + return out; + } + var domain = dict.get('Domain'); + var range = dict.get('Range'); + + if (!domain || !range) { + error('No domain or range'); + } + + var inputSize = domain.length / 2; + var outputSize = range.length / 2; + + domain = toMultiArray(domain); + range = toMultiArray(range); + + var size = dict.get('Size'); + var bps = dict.get('BitsPerSample'); + var order = dict.get('Order') || 1; + if (order !== 1) { + // No description how cubic spline interpolation works in PDF32000:2008 + // As in poppler, ignoring order, linear interpolation may work as good + info('No support for cubic spline interpolation: ' + order); + } + + var encode = dict.get('Encode'); + if (!encode) { + encode = []; + for (var i = 0; i < inputSize; ++i) { + encode.push(0); + encode.push(size[i] - 1); + } + } + encode = toMultiArray(encode); + + var decode = dict.get('Decode'); + if (!decode) { + decode = range; + } else { + decode = toMultiArray(decode); + } + + var samples = this.getSampleArray(size, outputSize, bps, str); + + return [ + CONSTRUCT_SAMPLED, inputSize, domain, encode, decode, samples, size, + outputSize, Math.pow(2, bps) - 1, range + ]; + }, + + constructSampledFromIR: function PDFFunction_constructSampledFromIR(IR) { + // See chapter 3, page 109 of the PDF reference + function interpolate(x, xmin, xmax, ymin, ymax) { + return ymin + ((x - xmin) * ((ymax - ymin) / (xmax - xmin))); + } + + return function constructSampledFromIRResult(src, srcOffset, + dest, destOffset) { + // See chapter 3, page 110 of the PDF reference. + var m = IR[1]; + var domain = IR[2]; + var encode = IR[3]; + var decode = IR[4]; + var samples = IR[5]; + var size = IR[6]; + var n = IR[7]; + //var mask = IR[8]; + var range = IR[9]; + + // Building the cube vertices: its part and sample index + // http://rjwagner49.com/Mathematics/Interpolation.pdf + var cubeVertices = 1 << m; + var cubeN = new Float64Array(cubeVertices); + var cubeVertex = new Uint32Array(cubeVertices); + var i, j; + for (j = 0; j < cubeVertices; j++) { + cubeN[j] = 1; + } + + var k = n, pos = 1; + // Map x_i to y_j for 0 <= i < m using the sampled function. + for (i = 0; i < m; ++i) { + // x_i' = min(max(x_i, Domain_2i), Domain_2i+1) + var domain_2i = domain[i][0]; + var domain_2i_1 = domain[i][1]; + var xi = Math.min(Math.max(src[srcOffset +i], domain_2i), + domain_2i_1); + + // e_i = Interpolate(x_i', Domain_2i, Domain_2i+1, + // Encode_2i, Encode_2i+1) + var e = interpolate(xi, domain_2i, domain_2i_1, + encode[i][0], encode[i][1]); + + // e_i' = min(max(e_i, 0), Size_i - 1) + var size_i = size[i]; + e = Math.min(Math.max(e, 0), size_i - 1); + + // Adjusting the cube: N and vertex sample index + var e0 = e < size_i - 1 ? Math.floor(e) : e - 1; // e1 = e0 + 1; + var n0 = e0 + 1 - e; // (e1 - e) / (e1 - e0); + var n1 = e - e0; // (e - e0) / (e1 - e0); + var offset0 = e0 * k; + var offset1 = offset0 + k; // e1 * k + for (j = 0; j < cubeVertices; j++) { + if (j & pos) { + cubeN[j] *= n1; + cubeVertex[j] += offset1; + } else { + cubeN[j] *= n0; + cubeVertex[j] += offset0; + } + } + + k *= size_i; + pos <<= 1; + } + + for (j = 0; j < n; ++j) { + // Sum all cube vertices' samples portions + var rj = 0; + for (i = 0; i < cubeVertices; i++) { + rj += samples[cubeVertex[i] + j] * cubeN[i]; + } + + // r_j' = Interpolate(r_j, 0, 2^BitsPerSample - 1, + // Decode_2j, Decode_2j+1) + rj = interpolate(rj, 0, 1, decode[j][0], decode[j][1]); + + // y_j = min(max(r_j, range_2j), range_2j+1) + dest[destOffset + j] = Math.min(Math.max(rj, range[j][0]), + range[j][1]); + } + }; + }, + + constructInterpolated: function PDFFunction_constructInterpolated(str, + dict) { + var c0 = dict.get('C0') || [0]; + var c1 = dict.get('C1') || [1]; + var n = dict.get('N'); + + if (!isArray(c0) || !isArray(c1)) { + error('Illegal dictionary for interpolated function'); + } + + var length = c0.length; + var diff = []; + for (var i = 0; i < length; ++i) { + diff.push(c1[i] - c0[i]); + } + + return [CONSTRUCT_INTERPOLATED, c0, diff, n]; + }, + + constructInterpolatedFromIR: + function PDFFunction_constructInterpolatedFromIR(IR) { + var c0 = IR[1]; + var diff = IR[2]; + var n = IR[3]; + + var length = diff.length; + + return function constructInterpolatedFromIRResult(src, srcOffset, + dest, destOffset) { + var x = n === 1 ? src[srcOffset] : Math.pow(src[srcOffset], n); + + for (var j = 0; j < length; ++j) { + dest[destOffset + j] = c0[j] + (x * diff[j]); + } + }; + }, + + constructStiched: function PDFFunction_constructStiched(fn, dict, xref) { + var domain = dict.get('Domain'); + + if (!domain) { + error('No domain'); + } + + var inputSize = domain.length / 2; + if (inputSize !== 1) { + error('Bad domain for stiched function'); + } + + var fnRefs = dict.get('Functions'); + var fns = []; + for (var i = 0, ii = fnRefs.length; i < ii; ++i) { + fns.push(PDFFunction.getIR(xref, xref.fetchIfRef(fnRefs[i]))); + } + + var bounds = dict.get('Bounds'); + var encode = dict.get('Encode'); + + return [CONSTRUCT_STICHED, domain, bounds, encode, fns]; + }, + + constructStichedFromIR: function PDFFunction_constructStichedFromIR(IR) { + var domain = IR[1]; + var bounds = IR[2]; + var encode = IR[3]; + var fnsIR = IR[4]; + var fns = []; + var tmpBuf = new Float32Array(1); + + for (var i = 0, ii = fnsIR.length; i < ii; i++) { + fns.push(PDFFunction.fromIR(fnsIR[i])); + } + + return function constructStichedFromIRResult(src, srcOffset, + dest, destOffset) { + var clip = function constructStichedFromIRClip(v, min, max) { + if (v > max) { + v = max; + } else if (v < min) { + v = min; + } + return v; + }; + + // clip to domain + var v = clip(src[srcOffset], domain[0], domain[1]); + // calulate which bound the value is in + for (var i = 0, ii = bounds.length; i < ii; ++i) { + if (v < bounds[i]) { + break; + } + } + + // encode value into domain of function + var dmin = domain[0]; + if (i > 0) { + dmin = bounds[i - 1]; + } + var dmax = domain[1]; + if (i < bounds.length) { + dmax = bounds[i]; + } + + var rmin = encode[2 * i]; + var rmax = encode[2 * i + 1]; + + tmpBuf[0] = rmin + (v - dmin) * (rmax - rmin) / (dmax - dmin); + + // call the appropriate function + fns[i](tmpBuf, 0, dest, destOffset); + }; + }, + + constructPostScript: function PDFFunction_constructPostScript(fn, dict, + xref) { + var domain = dict.get('Domain'); + var range = dict.get('Range'); + + if (!domain) { + error('No domain.'); + } + + if (!range) { + error('No range.'); + } + + var lexer = new PostScriptLexer(fn); + var parser = new PostScriptParser(lexer); + var code = parser.parse(); + + return [CONSTRUCT_POSTSCRIPT, domain, range, code]; + }, + + constructPostScriptFromIR: function PDFFunction_constructPostScriptFromIR( + IR) { + var domain = IR[1]; + var range = IR[2]; + var code = IR[3]; + + var compiled = (new PostScriptCompiler()).compile(code, domain, range); + if (compiled) { + // Compiled function consists of simple expressions such as addition, + // subtraction, Math.max, and also contains 'var' and 'return' + // statements. See the generation in the PostScriptCompiler below. + /*jshint -W054 */ + return new Function('src', 'srcOffset', 'dest', 'destOffset', compiled); + } + + info('Unable to compile PS function'); + + var numOutputs = range.length >> 1; + var numInputs = domain.length >> 1; + var evaluator = new PostScriptEvaluator(code); + // Cache the values for a big speed up, the cache size is limited though + // since the number of possible values can be huge from a PS function. + var cache = {}; + // The MAX_CACHE_SIZE is set to ~4x the maximum number of distinct values + // seen in our tests. + var MAX_CACHE_SIZE = 2048 * 4; + var cache_available = MAX_CACHE_SIZE; + var tmpBuf = new Float32Array(numInputs); + + return function constructPostScriptFromIRResult(src, srcOffset, + dest, destOffset) { + var i, value; + var key = ''; + var input = tmpBuf; + for (i = 0; i < numInputs; i++) { + value = src[srcOffset + i]; + input[i] = value; + key += value + '_'; + } + + var cachedValue = cache[key]; + if (cachedValue !== undefined) { + cachedValue.set(dest, destOffset); + return; + } + + var output = new Float32Array(numOutputs); + var stack = evaluator.execute(input); + var stackIndex = stack.length - numOutputs; + for (i = 0; i < numOutputs; i++) { + value = stack[stackIndex + i]; + var bound = range[i * 2]; + if (value < bound) { + value = bound; + } else { + bound = range[i * 2 +1]; + if (value > bound) { + value = bound; + } + } + output[i] = value; + } + if (cache_available > 0) { + cache_available--; + cache[key] = output; + } + output.set(dest, destOffset); + }; + } + }; +})(); + +function isPDFFunction(v) { + var fnDict; + if (typeof v !== 'object') { + return false; + } else if (isDict(v)) { + fnDict = v; + } else if (isStream(v)) { + fnDict = v.dict; + } else { + return false; + } + return fnDict.has('FunctionType'); +} + +var PostScriptStack = (function PostScriptStackClosure() { + var MAX_STACK_SIZE = 100; + function PostScriptStack(initialStack) { + this.stack = !initialStack ? [] : + Array.prototype.slice.call(initialStack, 0); + } + + PostScriptStack.prototype = { + push: function PostScriptStack_push(value) { + if (this.stack.length >= MAX_STACK_SIZE) { + error('PostScript function stack overflow.'); + } + this.stack.push(value); + }, + pop: function PostScriptStack_pop() { + if (this.stack.length <= 0) { + error('PostScript function stack underflow.'); + } + return this.stack.pop(); + }, + copy: function PostScriptStack_copy(n) { + if (this.stack.length + n >= MAX_STACK_SIZE) { + error('PostScript function stack overflow.'); + } + var stack = this.stack; + for (var i = stack.length - n, j = n - 1; j >= 0; j--, i++) { + stack.push(stack[i]); + } + }, + index: function PostScriptStack_index(n) { + this.push(this.stack[this.stack.length - n - 1]); + }, + // rotate the last n stack elements p times + roll: function PostScriptStack_roll(n, p) { + var stack = this.stack; + var l = stack.length - n; + var r = stack.length - 1, c = l + (p - Math.floor(p / n) * n), i, j, t; + for (i = l, j = r; i < j; i++, j--) { + t = stack[i]; stack[i] = stack[j]; stack[j] = t; + } + for (i = l, j = c - 1; i < j; i++, j--) { + t = stack[i]; stack[i] = stack[j]; stack[j] = t; + } + for (i = c, j = r; i < j; i++, j--) { + t = stack[i]; stack[i] = stack[j]; stack[j] = t; + } + } + }; + return PostScriptStack; +})(); +var PostScriptEvaluator = (function PostScriptEvaluatorClosure() { + function PostScriptEvaluator(operators) { + this.operators = operators; + } + PostScriptEvaluator.prototype = { + execute: function PostScriptEvaluator_execute(initialStack) { + var stack = new PostScriptStack(initialStack); + var counter = 0; + var operators = this.operators; + var length = operators.length; + var operator, a, b; + while (counter < length) { + operator = operators[counter++]; + if (typeof operator === 'number') { + // Operator is really an operand and should be pushed to the stack. + stack.push(operator); + continue; + } + switch (operator) { + // non standard ps operators + case 'jz': // jump if false + b = stack.pop(); + a = stack.pop(); + if (!a) { + counter = b; + } + break; + case 'j': // jump + a = stack.pop(); + counter = a; + break; + + // all ps operators in alphabetical order (excluding if/ifelse) + case 'abs': + a = stack.pop(); + stack.push(Math.abs(a)); + break; + case 'add': + b = stack.pop(); + a = stack.pop(); + stack.push(a + b); + break; + case 'and': + b = stack.pop(); + a = stack.pop(); + if (isBool(a) && isBool(b)) { + stack.push(a && b); + } else { + stack.push(a & b); + } + break; + case 'atan': + a = stack.pop(); + stack.push(Math.atan(a)); + break; + case 'bitshift': + b = stack.pop(); + a = stack.pop(); + if (a > 0) { + stack.push(a << b); + } else { + stack.push(a >> b); + } + break; + case 'ceiling': + a = stack.pop(); + stack.push(Math.ceil(a)); + break; + case 'copy': + a = stack.pop(); + stack.copy(a); + break; + case 'cos': + a = stack.pop(); + stack.push(Math.cos(a)); + break; + case 'cvi': + a = stack.pop() | 0; + stack.push(a); + break; + case 'cvr': + // noop + break; + case 'div': + b = stack.pop(); + a = stack.pop(); + stack.push(a / b); + break; + case 'dup': + stack.copy(1); + break; + case 'eq': + b = stack.pop(); + a = stack.pop(); + stack.push(a === b); + break; + case 'exch': + stack.roll(2, 1); + break; + case 'exp': + b = stack.pop(); + a = stack.pop(); + stack.push(Math.pow(a, b)); + break; + case 'false': + stack.push(false); + break; + case 'floor': + a = stack.pop(); + stack.push(Math.floor(a)); + break; + case 'ge': + b = stack.pop(); + a = stack.pop(); + stack.push(a >= b); + break; + case 'gt': + b = stack.pop(); + a = stack.pop(); + stack.push(a > b); + break; + case 'idiv': + b = stack.pop(); + a = stack.pop(); + stack.push((a / b) | 0); + break; + case 'index': + a = stack.pop(); + stack.index(a); + break; + case 'le': + b = stack.pop(); + a = stack.pop(); + stack.push(a <= b); + break; + case 'ln': + a = stack.pop(); + stack.push(Math.log(a)); + break; + case 'log': + a = stack.pop(); + stack.push(Math.log(a) / Math.LN10); + break; + case 'lt': + b = stack.pop(); + a = stack.pop(); + stack.push(a < b); + break; + case 'mod': + b = stack.pop(); + a = stack.pop(); + stack.push(a % b); + break; + case 'mul': + b = stack.pop(); + a = stack.pop(); + stack.push(a * b); + break; + case 'ne': + b = stack.pop(); + a = stack.pop(); + stack.push(a !== b); + break; + case 'neg': + a = stack.pop(); + stack.push(-a); + break; + case 'not': + a = stack.pop(); + if (isBool(a)) { + stack.push(!a); + } else { + stack.push(~a); + } + break; + case 'or': + b = stack.pop(); + a = stack.pop(); + if (isBool(a) && isBool(b)) { + stack.push(a || b); + } else { + stack.push(a | b); + } + break; + case 'pop': + stack.pop(); + break; + case 'roll': + b = stack.pop(); + a = stack.pop(); + stack.roll(a, b); + break; + case 'round': + a = stack.pop(); + stack.push(Math.round(a)); + break; + case 'sin': + a = stack.pop(); + stack.push(Math.sin(a)); + break; + case 'sqrt': + a = stack.pop(); + stack.push(Math.sqrt(a)); + break; + case 'sub': + b = stack.pop(); + a = stack.pop(); + stack.push(a - b); + break; + case 'true': + stack.push(true); + break; + case 'truncate': + a = stack.pop(); + a = a < 0 ? Math.ceil(a) : Math.floor(a); + stack.push(a); + break; + case 'xor': + b = stack.pop(); + a = stack.pop(); + if (isBool(a) && isBool(b)) { + stack.push(a !== b); + } else { + stack.push(a ^ b); + } + break; + default: + error('Unknown operator ' + operator); + break; + } + } + return stack.stack; + } + }; + return PostScriptEvaluator; +})(); + +// Most of the PDFs functions consist of simple operations such as: +// roll, exch, sub, cvr, pop, index, dup, mul, if, gt, add. +// +// We can compile most of such programs, and at the same moment, we can +// optimize some expressions using basic math properties. Keeping track of +// min/max values will allow us to avoid extra Math.min/Math.max calls. +var PostScriptCompiler = (function PostScriptCompilerClosure() { + function AstNode(type) { + this.type = type; + } + AstNode.prototype.visit = function (visitor) { + throw new Error('abstract method'); + }; + + function AstArgument(index, min, max) { + AstNode.call(this, 'args'); + this.index = index; + this.min = min; + this.max = max; + } + AstArgument.prototype = Object.create(AstNode.prototype); + AstArgument.prototype.visit = function (visitor) { + visitor.visitArgument(this); + }; + + function AstLiteral(number) { + AstNode.call(this, 'literal'); + this.number = number; + this.min = number; + this.max = number; + } + AstLiteral.prototype = Object.create(AstNode.prototype); + AstLiteral.prototype.visit = function (visitor) { + visitor.visitLiteral(this); + }; + + function AstBinaryOperation(op, arg1, arg2, min, max) { + AstNode.call(this, 'binary'); + this.op = op; + this.arg1 = arg1; + this.arg2 = arg2; + this.min = min; + this.max = max; + } + AstBinaryOperation.prototype = Object.create(AstNode.prototype); + AstBinaryOperation.prototype.visit = function (visitor) { + visitor.visitBinaryOperation(this); + }; + + function AstMin(arg, max) { + AstNode.call(this, 'max'); + this.arg = arg; + this.min = arg.min; + this.max = max; + } + AstMin.prototype = Object.create(AstNode.prototype); + AstMin.prototype.visit = function (visitor) { + visitor.visitMin(this); + }; + + function AstVariable(index, min, max) { + AstNode.call(this, 'var'); + this.index = index; + this.min = min; + this.max = max; + } + AstVariable.prototype = Object.create(AstNode.prototype); + AstVariable.prototype.visit = function (visitor) { + visitor.visitVariable(this); + }; + + function AstVariableDefinition(variable, arg) { + AstNode.call(this, 'definition'); + this.variable = variable; + this.arg = arg; + } + AstVariableDefinition.prototype = Object.create(AstNode.prototype); + AstVariableDefinition.prototype.visit = function (visitor) { + visitor.visitVariableDefinition(this); + }; + + function ExpressionBuilderVisitor() { + this.parts = []; + } + ExpressionBuilderVisitor.prototype = { + visitArgument: function (arg) { + this.parts.push('Math.max(', arg.min, ', Math.min(', + arg.max, ', src[srcOffset + ', arg.index, ']))'); + }, + visitVariable: function (variable) { + this.parts.push('v', variable.index); + }, + visitLiteral: function (literal) { + this.parts.push(literal.number); + }, + visitBinaryOperation: function (operation) { + this.parts.push('('); + operation.arg1.visit(this); + this.parts.push(' ', operation.op, ' '); + operation.arg2.visit(this); + this.parts.push(')'); + }, + visitVariableDefinition: function (definition) { + this.parts.push('var '); + definition.variable.visit(this); + this.parts.push(' = '); + definition.arg.visit(this); + this.parts.push(';'); + }, + visitMin: function (max) { + this.parts.push('Math.min('); + max.arg.visit(this); + this.parts.push(', ', max.max, ')'); + }, + toString: function () { + return this.parts.join(''); + } + }; + + function buildAddOperation(num1, num2) { + if (num2.type === 'literal' && num2.number === 0) { + // optimization: second operand is 0 + return num1; + } + if (num1.type === 'literal' && num1.number === 0) { + // optimization: first operand is 0 + return num2; + } + if (num2.type === 'literal' && num1.type === 'literal') { + // optimization: operands operand are literals + return new AstLiteral(num1.number + num2.number); + } + return new AstBinaryOperation('+', num1, num2, + num1.min + num2.min, num1.max + num2.max); + } + + function buildMulOperation(num1, num2) { + if (num2.type === 'literal') { + // optimization: second operands is a literal... + if (num2.number === 0) { + return new AstLiteral(0); // and it's 0 + } else if (num2.number === 1) { + return num1; // and it's 1 + } else if (num1.type === 'literal') { + // ... and first operands is a literal too + return new AstLiteral(num1.number * num2.number); + } + } + if (num1.type === 'literal') { + // optimization: first operands is a literal... + if (num1.number === 0) { + return new AstLiteral(0); // and it's 0 + } else if (num1.number === 1) { + return num2; // and it's 1 + } + } + var min = Math.min(num1.min * num2.min, num1.min * num2.max, + num1.max * num2.min, num1.max * num2.max); + var max = Math.max(num1.min * num2.min, num1.min * num2.max, + num1.max * num2.min, num1.max * num2.max); + return new AstBinaryOperation('*', num1, num2, min, max); + } + + function buildSubOperation(num1, num2) { + if (num2.type === 'literal') { + // optimization: second operands is a literal... + if (num2.number === 0) { + return num1; // ... and it's 0 + } else if (num1.type === 'literal') { + // ... and first operands is a literal too + return new AstLiteral(num1.number - num2.number); + } + } + if (num2.type === 'binary' && num2.op === '-' && + num1.type === 'literal' && num1.number === 1 && + num2.arg1.type === 'literal' && num2.arg1.number === 1) { + // optimization for case: 1 - (1 - x) + return num2.arg2; + } + return new AstBinaryOperation('-', num1, num2, + num1.min - num2.max, num1.max - num2.min); + } + + function buildMinOperation(num1, max) { + if (num1.min >= max) { + // optimization: num1 min value is not less than required max + return new AstLiteral(max); // just returning max + } else if (num1.max <= max) { + // optimization: num1 max value is not greater than required max + return num1; // just returning an argument + } + return new AstMin(num1, max); + } + + function PostScriptCompiler() {} + PostScriptCompiler.prototype = { + compile: function PostScriptCompiler_compile(code, domain, range) { + var stack = []; + var i, ii; + var instructions = []; + var inputSize = domain.length >> 1, outputSize = range.length >> 1; + var lastRegister = 0; + var n, j, min, max; + var num1, num2, ast1, ast2, tmpVar, item; + for (i = 0; i < inputSize; i++) { + stack.push(new AstArgument(i, domain[i * 2], domain[i * 2 + 1])); + } + + for (i = 0, ii = code.length; i < ii; i++) { + item = code[i]; + if (typeof item === 'number') { + stack.push(new AstLiteral(item)); + continue; + } + + switch (item) { + case 'add': + if (stack.length < 2) { + return null; + } + num2 = stack.pop(); + num1 = stack.pop(); + stack.push(buildAddOperation(num1, num2)); + break; + case 'cvr': + if (stack.length < 1) { + return null; + } + break; + case 'mul': + if (stack.length < 2) { + return null; + } + num2 = stack.pop(); + num1 = stack.pop(); + stack.push(buildMulOperation(num1, num2)); + break; + case 'sub': + if (stack.length < 2) { + return null; + } + num2 = stack.pop(); + num1 = stack.pop(); + stack.push(buildSubOperation(num1, num2)); + break; + case 'exch': + if (stack.length < 2) { + return null; + } + ast1 = stack.pop(); ast2 = stack.pop(); + stack.push(ast1, ast2); + break; + case 'pop': + if (stack.length < 1) { + return null; + } + stack.pop(); + break; + case 'index': + if (stack.length < 1) { + return null; + } + num1 = stack.pop(); + if (num1.type !== 'literal') { + return null; + } + n = num1.number; + if (n < 0 || (n|0) !== n || stack.length < n) { + return null; + } + ast1 = stack[stack.length - n - 1]; + if (ast1.type === 'literal' || ast1.type === 'var') { + stack.push(ast1); + break; + } + tmpVar = new AstVariable(lastRegister++, ast1.min, ast1.max); + stack[stack.length - n - 1] = tmpVar; + stack.push(tmpVar); + instructions.push(new AstVariableDefinition(tmpVar, ast1)); + break; + case 'dup': + if (stack.length < 1) { + return null; + } + if (typeof code[i + 1] === 'number' && code[i + 2] === 'gt' && + code[i + 3] === i + 7 && code[i + 4] === 'jz' && + code[i + 5] === 'pop' && code[i + 6] === code[i + 1]) { + // special case of the commands sequence for the min operation + num1 = stack.pop(); + stack.push(buildMinOperation(num1, code[i + 1])); + i += 6; + break; + } + ast1 = stack[stack.length - 1]; + if (ast1.type === 'literal' || ast1.type === 'var') { + // we don't have to save into intermediate variable a literal or + // variable. + stack.push(ast1); + break; + } + tmpVar = new AstVariable(lastRegister++, ast1.min, ast1.max); + stack[stack.length - 1] = tmpVar; + stack.push(tmpVar); + instructions.push(new AstVariableDefinition(tmpVar, ast1)); + break; + case 'roll': + if (stack.length < 2) { + return null; + } + num2 = stack.pop(); + num1 = stack.pop(); + if (num2.type !== 'literal' || num1.type !== 'literal') { + // both roll operands must be numbers + return null; + } + j = num2.number; + n = num1.number; + if (n <= 0 || (n|0) !== n || (j|0) !== j || stack.length < n) { + // ... and integers + return null; + } + j = ((j % n) + n) % n; + if (j === 0) { + break; // just skipping -- there are nothing to rotate + } + Array.prototype.push.apply(stack, + stack.splice(stack.length - n, n - j)); + break; + default: + return null; // unsupported operator + } + } + + if (stack.length !== outputSize) { + return null; + } + + var result = []; + instructions.forEach(function (instruction) { + var statementBuilder = new ExpressionBuilderVisitor(); + instruction.visit(statementBuilder); + result.push(statementBuilder.toString()); + }); + stack.forEach(function (expr, i) { + var statementBuilder = new ExpressionBuilderVisitor(); + expr.visit(statementBuilder); + var min = range[i * 2], max = range[i * 2 + 1]; + var out = [statementBuilder.toString()]; + if (min > expr.min) { + out.unshift('Math.max(', min, ', '); + out.push(')'); + } + if (max < expr.max) { + out.unshift('Math.min(', max, ', '); + out.push(')'); + } + out.unshift('dest[destOffset + ', i, '] = '); + out.push(';'); + result.push(out.join('')); + }); + return result.join('\n'); + } + }; + + return PostScriptCompiler; +})(); + + +var ColorSpace = (function ColorSpaceClosure() { + // Constructor should define this.numComps, this.defaultColor, this.name + function ColorSpace() { + error('should not call ColorSpace constructor'); + } + + ColorSpace.prototype = { + /** + * Converts the color value to the RGB color. The color components are + * located in the src array starting from the srcOffset. Returns the array + * of the rgb components, each value ranging from [0,255]. + */ + getRgb: function ColorSpace_getRgb(src, srcOffset) { + var rgb = new Uint8Array(3); + this.getRgbItem(src, srcOffset, rgb, 0); + return rgb; + }, + /** + * Converts the color value to the RGB color, similar to the getRgb method. + * The result placed into the dest array starting from the destOffset. + */ + getRgbItem: function ColorSpace_getRgbItem(src, srcOffset, + dest, destOffset) { + error('Should not call ColorSpace.getRgbItem'); + }, + /** + * Converts the specified number of the color values to the RGB colors. + * The colors are located in the src array starting from the srcOffset. + * The result is placed into the dest array starting from the destOffset. + * The src array items shall be in [0,2^bits) range, the dest array items + * will be in [0,255] range. alpha01 indicates how many alpha components + * there are in the dest array; it will be either 0 (RGB array) or 1 (RGBA + * array). + */ + getRgbBuffer: function ColorSpace_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + error('Should not call ColorSpace.getRgbBuffer'); + }, + /** + * Determines the number of bytes required to store the result of the + * conversion done by the getRgbBuffer method. As in getRgbBuffer, + * |alpha01| is either 0 (RGB output) or 1 (RGBA output). + */ + getOutputLength: function ColorSpace_getOutputLength(inputLength, + alpha01) { + error('Should not call ColorSpace.getOutputLength'); + }, + /** + * Returns true if source data will be equal the result/output data. + */ + isPassthrough: function ColorSpace_isPassthrough(bits) { + return false; + }, + /** + * Fills in the RGB colors in the destination buffer. alpha01 indicates + * how many alpha components there are in the dest array; it will be either + * 0 (RGB array) or 1 (RGBA array). + */ + fillRgb: function ColorSpace_fillRgb(dest, originalWidth, + originalHeight, width, height, + actualHeight, bpc, comps, alpha01) { + var count = originalWidth * originalHeight; + var rgbBuf = null; + var numComponentColors = 1 << bpc; + var needsResizing = originalHeight !== height || originalWidth !== width; + var i, ii; + + if (this.isPassthrough(bpc)) { + rgbBuf = comps; + } else if (this.numComps === 1 && count > numComponentColors && + this.name !== 'DeviceGray' && this.name !== 'DeviceRGB') { + // Optimization: create a color map when there is just one component and + // we are converting more colors than the size of the color map. We + // don't build the map if the colorspace is gray or rgb since those + // methods are faster than building a map. This mainly offers big speed + // ups for indexed and alternate colorspaces. + // + // TODO it may be worth while to cache the color map. While running + // testing I never hit a cache so I will leave that out for now (perhaps + // we are reparsing colorspaces too much?). + var allColors = bpc <= 8 ? new Uint8Array(numComponentColors) : + new Uint16Array(numComponentColors); + var key; + for (i = 0; i < numComponentColors; i++) { + allColors[i] = i; + } + var colorMap = new Uint8Array(numComponentColors * 3); + this.getRgbBuffer(allColors, 0, numComponentColors, colorMap, 0, bpc, + /* alpha01 = */ 0); + + var destPos, rgbPos; + if (!needsResizing) { + // Fill in the RGB values directly into |dest|. + destPos = 0; + for (i = 0; i < count; ++i) { + key = comps[i] * 3; + dest[destPos++] = colorMap[key]; + dest[destPos++] = colorMap[key + 1]; + dest[destPos++] = colorMap[key + 2]; + destPos += alpha01; + } + } else { + rgbBuf = new Uint8Array(count * 3); + rgbPos = 0; + for (i = 0; i < count; ++i) { + key = comps[i] * 3; + rgbBuf[rgbPos++] = colorMap[key]; + rgbBuf[rgbPos++] = colorMap[key + 1]; + rgbBuf[rgbPos++] = colorMap[key + 2]; + } + } + } else { + if (!needsResizing) { + // Fill in the RGB values directly into |dest|. + this.getRgbBuffer(comps, 0, width * actualHeight, dest, 0, bpc, + alpha01); + } else { + rgbBuf = new Uint8Array(count * 3); + this.getRgbBuffer(comps, 0, count, rgbBuf, 0, bpc, + /* alpha01 = */ 0); + } + } + + if (rgbBuf) { + if (needsResizing) { + PDFImage.resize(rgbBuf, bpc, 3, originalWidth, originalHeight, width, + height, dest, alpha01); + } else { + rgbPos = 0; + destPos = 0; + for (i = 0, ii = width * actualHeight; i < ii; i++) { + dest[destPos++] = rgbBuf[rgbPos++]; + dest[destPos++] = rgbBuf[rgbPos++]; + dest[destPos++] = rgbBuf[rgbPos++]; + destPos += alpha01; + } + } + } + }, + /** + * True if the colorspace has components in the default range of [0, 1]. + * This should be true for all colorspaces except for lab color spaces + * which are [0,100], [-128, 127], [-128, 127]. + */ + usesZeroToOneRange: true + }; + + ColorSpace.parse = function ColorSpace_parse(cs, xref, res) { + var IR = ColorSpace.parseToIR(cs, xref, res); + if (IR instanceof AlternateCS) { + return IR; + } + return ColorSpace.fromIR(IR); + }; + + ColorSpace.fromIR = function ColorSpace_fromIR(IR) { + var name = isArray(IR) ? IR[0] : IR; + var whitePoint, blackPoint, gamma; + + switch (name) { + case 'DeviceGrayCS': + return this.singletons.gray; + case 'DeviceRgbCS': + return this.singletons.rgb; + case 'DeviceCmykCS': + return this.singletons.cmyk; + case 'CalGrayCS': + whitePoint = IR[1].WhitePoint; + blackPoint = IR[1].BlackPoint; + gamma = IR[1].Gamma; + return new CalGrayCS(whitePoint, blackPoint, gamma); + case 'CalRGBCS': + whitePoint = IR[1].WhitePoint; + blackPoint = IR[1].BlackPoint; + gamma = IR[1].Gamma; + var matrix = IR[1].Matrix; + return new CalRGBCS(whitePoint, blackPoint, gamma, matrix); + case 'PatternCS': + var basePatternCS = IR[1]; + if (basePatternCS) { + basePatternCS = ColorSpace.fromIR(basePatternCS); + } + return new PatternCS(basePatternCS); + case 'IndexedCS': + var baseIndexedCS = IR[1]; + var hiVal = IR[2]; + var lookup = IR[3]; + return new IndexedCS(ColorSpace.fromIR(baseIndexedCS), hiVal, lookup); + case 'AlternateCS': + var numComps = IR[1]; + var alt = IR[2]; + var tintFnIR = IR[3]; + + return new AlternateCS(numComps, ColorSpace.fromIR(alt), + PDFFunction.fromIR(tintFnIR)); + case 'LabCS': + whitePoint = IR[1].WhitePoint; + blackPoint = IR[1].BlackPoint; + var range = IR[1].Range; + return new LabCS(whitePoint, blackPoint, range); + default: + error('Unknown name ' + name); + } + return null; + }; + + ColorSpace.parseToIR = function ColorSpace_parseToIR(cs, xref, res) { + if (isName(cs)) { + var colorSpaces = res.get('ColorSpace'); + if (isDict(colorSpaces)) { + var refcs = colorSpaces.get(cs.name); + if (refcs) { + cs = refcs; + } + } + } + + cs = xref.fetchIfRef(cs); + var mode; + + if (isName(cs)) { + mode = cs.name; + this.mode = mode; + + switch (mode) { + case 'DeviceGray': + case 'G': + return 'DeviceGrayCS'; + case 'DeviceRGB': + case 'RGB': + return 'DeviceRgbCS'; + case 'DeviceCMYK': + case 'CMYK': + return 'DeviceCmykCS'; + case 'Pattern': + return ['PatternCS', null]; + default: + error('unrecognized colorspace ' + mode); + } + } else if (isArray(cs)) { + mode = cs[0].name; + this.mode = mode; + var numComps, params; + + switch (mode) { + case 'DeviceGray': + case 'G': + return 'DeviceGrayCS'; + case 'DeviceRGB': + case 'RGB': + return 'DeviceRgbCS'; + case 'DeviceCMYK': + case 'CMYK': + return 'DeviceCmykCS'; + case 'CalGray': + params = cs[1].getAll(); + return ['CalGrayCS', params]; + case 'CalRGB': + params = cs[1].getAll(); + return ['CalRGBCS', params]; + case 'ICCBased': + var stream = xref.fetchIfRef(cs[1]); + var dict = stream.dict; + numComps = dict.get('N'); + if (numComps === 1) { + return 'DeviceGrayCS'; + } else if (numComps === 3) { + return 'DeviceRgbCS'; + } else if (numComps === 4) { + return 'DeviceCmykCS'; + } + break; + case 'Pattern': + var basePatternCS = cs[1]; + if (basePatternCS) { + basePatternCS = ColorSpace.parseToIR(basePatternCS, xref, res); + } + return ['PatternCS', basePatternCS]; + case 'Indexed': + case 'I': + var baseIndexedCS = ColorSpace.parseToIR(cs[1], xref, res); + var hiVal = cs[2] + 1; + var lookup = xref.fetchIfRef(cs[3]); + if (isStream(lookup)) { + lookup = lookup.getBytes(); + } + return ['IndexedCS', baseIndexedCS, hiVal, lookup]; + case 'Separation': + case 'DeviceN': + var name = cs[1]; + numComps = 1; + if (isName(name)) { + numComps = 1; + } else if (isArray(name)) { + numComps = name.length; + } + var alt = ColorSpace.parseToIR(cs[2], xref, res); + var tintFnIR = PDFFunction.getIR(xref, xref.fetchIfRef(cs[3])); + return ['AlternateCS', numComps, alt, tintFnIR]; + case 'Lab': + params = cs[1].getAll(); + return ['LabCS', params]; + default: + error('unimplemented color space object "' + mode + '"'); + } + } else { + error('unrecognized color space object: "' + cs + '"'); + } + return null; + }; + /** + * Checks if a decode map matches the default decode map for a color space. + * This handles the general decode maps where there are two values per + * component. e.g. [0, 1, 0, 1, 0, 1] for a RGB color. + * This does not handle Lab, Indexed, or Pattern decode maps since they are + * slightly different. + * @param {Array} decode Decode map (usually from an image). + * @param {Number} n Number of components the color space has. + */ + ColorSpace.isDefaultDecode = function ColorSpace_isDefaultDecode(decode, n) { + if (!decode) { + return true; + } + + if (n * 2 !== decode.length) { + warn('The decode map is not the correct length'); + return true; + } + for (var i = 0, ii = decode.length; i < ii; i += 2) { + if (decode[i] !== 0 || decode[i + 1] !== 1) { + return false; + } + } + return true; + }; + + ColorSpace.singletons = { + get gray() { + return shadow(this, 'gray', new DeviceGrayCS()); + }, + get rgb() { + return shadow(this, 'rgb', new DeviceRgbCS()); + }, + get cmyk() { + return shadow(this, 'cmyk', new DeviceCmykCS()); + } + }; + + return ColorSpace; +})(); + +/** + * Alternate color space handles both Separation and DeviceN color spaces. A + * Separation color space is actually just a DeviceN with one color component. + * Both color spaces use a tinting function to convert colors to a base color + * space. + */ +var AlternateCS = (function AlternateCSClosure() { + function AlternateCS(numComps, base, tintFn) { + this.name = 'Alternate'; + this.numComps = numComps; + this.defaultColor = new Float32Array(numComps); + for (var i = 0; i < numComps; ++i) { + this.defaultColor[i] = 1; + } + this.base = base; + this.tintFn = tintFn; + this.tmpBuf = new Float32Array(base.numComps); + } + + AlternateCS.prototype = { + getRgb: ColorSpace.prototype.getRgb, + getRgbItem: function AlternateCS_getRgbItem(src, srcOffset, + dest, destOffset) { + var tmpBuf = this.tmpBuf; + this.tintFn(src, srcOffset, tmpBuf, 0); + this.base.getRgbItem(tmpBuf, 0, dest, destOffset); + }, + getRgbBuffer: function AlternateCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + var tintFn = this.tintFn; + var base = this.base; + var scale = 1 / ((1 << bits) - 1); + var baseNumComps = base.numComps; + var usesZeroToOneRange = base.usesZeroToOneRange; + var isPassthrough = (base.isPassthrough(8) || !usesZeroToOneRange) && + alpha01 === 0; + var pos = isPassthrough ? destOffset : 0; + var baseBuf = isPassthrough ? dest : new Uint8Array(baseNumComps * count); + var numComps = this.numComps; + + var scaled = new Float32Array(numComps); + var tinted = new Float32Array(baseNumComps); + var i, j; + if (usesZeroToOneRange) { + for (i = 0; i < count; i++) { + for (j = 0; j < numComps; j++) { + scaled[j] = src[srcOffset++] * scale; + } + tintFn(scaled, 0, tinted, 0); + for (j = 0; j < baseNumComps; j++) { + baseBuf[pos++] = tinted[j] * 255; + } + } + } else { + for (i = 0; i < count; i++) { + for (j = 0; j < numComps; j++) { + scaled[j] = src[srcOffset++] * scale; + } + tintFn(scaled, 0, tinted, 0); + base.getRgbItem(tinted, 0, baseBuf, pos); + pos += baseNumComps; + } + } + if (!isPassthrough) { + base.getRgbBuffer(baseBuf, 0, count, dest, destOffset, 8, alpha01); + } + }, + getOutputLength: function AlternateCS_getOutputLength(inputLength, + alpha01) { + return this.base.getOutputLength(inputLength * + this.base.numComps / this.numComps, + alpha01); + }, + isPassthrough: ColorSpace.prototype.isPassthrough, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function AlternateCS_isDefaultDecode(decodeMap) { + return ColorSpace.isDefaultDecode(decodeMap, this.numComps); + }, + usesZeroToOneRange: true + }; + + return AlternateCS; +})(); + +var PatternCS = (function PatternCSClosure() { + function PatternCS(baseCS) { + this.name = 'Pattern'; + this.base = baseCS; + } + PatternCS.prototype = {}; + + return PatternCS; +})(); + +var IndexedCS = (function IndexedCSClosure() { + function IndexedCS(base, highVal, lookup) { + this.name = 'Indexed'; + this.numComps = 1; + this.defaultColor = new Uint8Array([0]); + this.base = base; + this.highVal = highVal; + + var baseNumComps = base.numComps; + var length = baseNumComps * highVal; + var lookupArray; + + if (isStream(lookup)) { + lookupArray = new Uint8Array(length); + var bytes = lookup.getBytes(length); + lookupArray.set(bytes); + } else if (isString(lookup)) { + lookupArray = new Uint8Array(length); + for (var i = 0; i < length; ++i) { + lookupArray[i] = lookup.charCodeAt(i); + } + } else if (lookup instanceof Uint8Array || lookup instanceof Array) { + lookupArray = lookup; + } else { + error('Unrecognized lookup table: ' + lookup); + } + this.lookup = lookupArray; + } + + IndexedCS.prototype = { + getRgb: ColorSpace.prototype.getRgb, + getRgbItem: function IndexedCS_getRgbItem(src, srcOffset, + dest, destOffset) { + var numComps = this.base.numComps; + var start = src[srcOffset] * numComps; + this.base.getRgbItem(this.lookup, start, dest, destOffset); + }, + getRgbBuffer: function IndexedCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + var base = this.base; + var numComps = base.numComps; + var outputDelta = base.getOutputLength(numComps, alpha01); + var lookup = this.lookup; + + for (var i = 0; i < count; ++i) { + var lookupPos = src[srcOffset++] * numComps; + base.getRgbBuffer(lookup, lookupPos, 1, dest, destOffset, 8, alpha01); + destOffset += outputDelta; + } + }, + getOutputLength: function IndexedCS_getOutputLength(inputLength, alpha01) { + return this.base.getOutputLength(inputLength * this.base.numComps, + alpha01); + }, + isPassthrough: ColorSpace.prototype.isPassthrough, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function IndexedCS_isDefaultDecode(decodeMap) { + // indexed color maps shouldn't be changed + return true; + }, + usesZeroToOneRange: true + }; + return IndexedCS; +})(); + +var DeviceGrayCS = (function DeviceGrayCSClosure() { + function DeviceGrayCS() { + this.name = 'DeviceGray'; + this.numComps = 1; + this.defaultColor = new Float32Array([0]); + } + + DeviceGrayCS.prototype = { + getRgb: ColorSpace.prototype.getRgb, + getRgbItem: function DeviceGrayCS_getRgbItem(src, srcOffset, + dest, destOffset) { + var c = (src[srcOffset] * 255) | 0; + c = c < 0 ? 0 : c > 255 ? 255 : c; + dest[destOffset] = dest[destOffset + 1] = dest[destOffset + 2] = c; + }, + getRgbBuffer: function DeviceGrayCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + var scale = 255 / ((1 << bits) - 1); + var j = srcOffset, q = destOffset; + for (var i = 0; i < count; ++i) { + var c = (scale * src[j++]) | 0; + dest[q++] = c; + dest[q++] = c; + dest[q++] = c; + q += alpha01; + } + }, + getOutputLength: function DeviceGrayCS_getOutputLength(inputLength, + alpha01) { + return inputLength * (3 + alpha01); + }, + isPassthrough: ColorSpace.prototype.isPassthrough, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function DeviceGrayCS_isDefaultDecode(decodeMap) { + return ColorSpace.isDefaultDecode(decodeMap, this.numComps); + }, + usesZeroToOneRange: true + }; + return DeviceGrayCS; +})(); + +var DeviceRgbCS = (function DeviceRgbCSClosure() { + function DeviceRgbCS() { + this.name = 'DeviceRGB'; + this.numComps = 3; + this.defaultColor = new Float32Array([0, 0, 0]); + } + DeviceRgbCS.prototype = { + getRgb: ColorSpace.prototype.getRgb, + getRgbItem: function DeviceRgbCS_getRgbItem(src, srcOffset, + dest, destOffset) { + var r = (src[srcOffset] * 255) | 0; + var g = (src[srcOffset + 1] * 255) | 0; + var b = (src[srcOffset + 2] * 255) | 0; + dest[destOffset] = r < 0 ? 0 : r > 255 ? 255 : r; + dest[destOffset + 1] = g < 0 ? 0 : g > 255 ? 255 : g; + dest[destOffset + 2] = b < 0 ? 0 : b > 255 ? 255 : b; + }, + getRgbBuffer: function DeviceRgbCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + if (bits === 8 && alpha01 === 0) { + dest.set(src.subarray(srcOffset, srcOffset + count * 3), destOffset); + return; + } + var scale = 255 / ((1 << bits) - 1); + var j = srcOffset, q = destOffset; + for (var i = 0; i < count; ++i) { + dest[q++] = (scale * src[j++]) | 0; + dest[q++] = (scale * src[j++]) | 0; + dest[q++] = (scale * src[j++]) | 0; + q += alpha01; + } + }, + getOutputLength: function DeviceRgbCS_getOutputLength(inputLength, + alpha01) { + return (inputLength * (3 + alpha01) / 3) | 0; + }, + isPassthrough: function DeviceRgbCS_isPassthrough(bits) { + return bits === 8; + }, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function DeviceRgbCS_isDefaultDecode(decodeMap) { + return ColorSpace.isDefaultDecode(decodeMap, this.numComps); + }, + usesZeroToOneRange: true + }; + return DeviceRgbCS; +})(); + +var DeviceCmykCS = (function DeviceCmykCSClosure() { + // The coefficients below was found using numerical analysis: the method of + // steepest descent for the sum((f_i - color_value_i)^2) for r/g/b colors, + // where color_value is the tabular value from the table of sampled RGB colors + // from CMYK US Web Coated (SWOP) colorspace, and f_i is the corresponding + // CMYK color conversion using the estimation below: + // f(A, B,.. N) = Acc+Bcm+Ccy+Dck+c+Fmm+Gmy+Hmk+Im+Jyy+Kyk+Ly+Mkk+Nk+255 + function convertToRgb(src, srcOffset, srcScale, dest, destOffset) { + var c = src[srcOffset + 0] * srcScale; + var m = src[srcOffset + 1] * srcScale; + var y = src[srcOffset + 2] * srcScale; + var k = src[srcOffset + 3] * srcScale; + + var r = + (c * (-4.387332384609988 * c + 54.48615194189176 * m + + 18.82290502165302 * y + 212.25662451639585 * k + + -285.2331026137004) + + m * (1.7149763477362134 * m - 5.6096736904047315 * y + + -17.873870861415444 * k - 5.497006427196366) + + y * (-2.5217340131683033 * y - 21.248923337353073 * k + + 17.5119270841813) + + k * (-21.86122147463605 * k - 189.48180835922747) + 255) | 0; + var g = + (c * (8.841041422036149 * c + 60.118027045597366 * m + + 6.871425592049007 * y + 31.159100130055922 * k + + -79.2970844816548) + + m * (-15.310361306967817 * m + 17.575251261109482 * y + + 131.35250912493976 * k - 190.9453302588951) + + y * (4.444339102852739 * y + 9.8632861493405 * k - 24.86741582555878) + + k * (-20.737325471181034 * k - 187.80453709719578) + 255) | 0; + var b = + (c * (0.8842522430003296 * c + 8.078677503112928 * m + + 30.89978309703729 * y - 0.23883238689178934 * k + + -14.183576799673286) + + m * (10.49593273432072 * m + 63.02378494754052 * y + + 50.606957656360734 * k - 112.23884253719248) + + y * (0.03296041114873217 * y + 115.60384449646641 * k + + -193.58209356861505) + + k * (-22.33816807309886 * k - 180.12613974708367) + 255) | 0; + + dest[destOffset] = r > 255 ? 255 : r < 0 ? 0 : r; + dest[destOffset + 1] = g > 255 ? 255 : g < 0 ? 0 : g; + dest[destOffset + 2] = b > 255 ? 255 : b < 0 ? 0 : b; + } + + function DeviceCmykCS() { + this.name = 'DeviceCMYK'; + this.numComps = 4; + this.defaultColor = new Float32Array([0, 0, 0, 1]); + } + DeviceCmykCS.prototype = { + getRgb: ColorSpace.prototype.getRgb, + getRgbItem: function DeviceCmykCS_getRgbItem(src, srcOffset, + dest, destOffset) { + convertToRgb(src, srcOffset, 1, dest, destOffset); + }, + getRgbBuffer: function DeviceCmykCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + var scale = 1 / ((1 << bits) - 1); + for (var i = 0; i < count; i++) { + convertToRgb(src, srcOffset, scale, dest, destOffset); + srcOffset += 4; + destOffset += 3 + alpha01; + } + }, + getOutputLength: function DeviceCmykCS_getOutputLength(inputLength, + alpha01) { + return (inputLength / 4 * (3 + alpha01)) | 0; + }, + isPassthrough: ColorSpace.prototype.isPassthrough, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function DeviceCmykCS_isDefaultDecode(decodeMap) { + return ColorSpace.isDefaultDecode(decodeMap, this.numComps); + }, + usesZeroToOneRange: true + }; + + return DeviceCmykCS; +})(); + +// +// CalGrayCS: Based on "PDF Reference, Sixth Ed", p.245 +// +var CalGrayCS = (function CalGrayCSClosure() { + function CalGrayCS(whitePoint, blackPoint, gamma) { + this.name = 'CalGray'; + this.numComps = 1; + this.defaultColor = new Float32Array([0]); + + if (!whitePoint) { + error('WhitePoint missing - required for color space CalGray'); + } + blackPoint = blackPoint || [0, 0, 0]; + gamma = gamma || 1; + + // Translate arguments to spec variables. + this.XW = whitePoint[0]; + this.YW = whitePoint[1]; + this.ZW = whitePoint[2]; + + this.XB = blackPoint[0]; + this.YB = blackPoint[1]; + this.ZB = blackPoint[2]; + + this.G = gamma; + + // Validate variables as per spec. + if (this.XW < 0 || this.ZW < 0 || this.YW !== 1) { + error('Invalid WhitePoint components for ' + this.name + + ', no fallback available'); + } + + if (this.XB < 0 || this.YB < 0 || this.ZB < 0) { + info('Invalid BlackPoint for ' + this.name + ', falling back to default'); + this.XB = this.YB = this.ZB = 0; + } + + if (this.XB !== 0 || this.YB !== 0 || this.ZB !== 0) { + warn(this.name + ', BlackPoint: XB: ' + this.XB + ', YB: ' + this.YB + + ', ZB: ' + this.ZB + ', only default values are supported.'); + } + + if (this.G < 1) { + info('Invalid Gamma: ' + this.G + ' for ' + this.name + + ', falling back to default'); + this.G = 1; + } + } + + function convertToRgb(cs, src, srcOffset, dest, destOffset, scale) { + // A represents a gray component of a calibrated gray space. + // A <---> AG in the spec + var A = src[srcOffset] * scale; + var AG = Math.pow(A, cs.G); + + // Computes L as per spec. ( = cs.YW * AG ) + // Except if other than default BlackPoint values are used. + var L = cs.YW * AG; + // http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html, Ch 4. + // Convert values to rgb range [0, 255]. + var val = Math.max(295.8 * Math.pow(L, 0.333333333333333333) - 40.8, 0) | 0; + dest[destOffset] = val; + dest[destOffset + 1] = val; + dest[destOffset + 2] = val; + } + + CalGrayCS.prototype = { + getRgb: ColorSpace.prototype.getRgb, + getRgbItem: function CalGrayCS_getRgbItem(src, srcOffset, + dest, destOffset) { + convertToRgb(this, src, srcOffset, dest, destOffset, 1); + }, + getRgbBuffer: function CalGrayCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + var scale = 1 / ((1 << bits) - 1); + + for (var i = 0; i < count; ++i) { + convertToRgb(this, src, srcOffset, dest, destOffset, scale); + srcOffset += 1; + destOffset += 3 + alpha01; + } + }, + getOutputLength: function CalGrayCS_getOutputLength(inputLength, alpha01) { + return inputLength * (3 + alpha01); + }, + isPassthrough: ColorSpace.prototype.isPassthrough, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function CalGrayCS_isDefaultDecode(decodeMap) { + return ColorSpace.isDefaultDecode(decodeMap, this.numComps); + }, + usesZeroToOneRange: true + }; + return CalGrayCS; +})(); + +// +// CalRGBCS: Based on "PDF Reference, Sixth Ed", p.247 +// +var CalRGBCS = (function CalRGBCSClosure() { + + // See http://www.brucelindbloom.com/index.html?Eqn_ChromAdapt.html for these + // matrices. + var BRADFORD_SCALE_MATRIX = new Float32Array([ + 0.8951, 0.2664, -0.1614, + -0.7502, 1.7135, 0.0367, + 0.0389, -0.0685, 1.0296]); + + var BRADFORD_SCALE_INVERSE_MATRIX = new Float32Array([ + 0.9869929, -0.1470543, 0.1599627, + 0.4323053, 0.5183603, 0.0492912, + -0.0085287, 0.0400428, 0.9684867]); + + // See http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html. + var SRGB_D65_XYZ_TO_RGB_MATRIX = new Float32Array([ + 3.2404542, -1.5371385, -0.4985314, + -0.9692660, 1.8760108, 0.0415560, + 0.0556434, -0.2040259, 1.0572252]); + + var FLAT_WHITEPOINT_MATRIX = new Float32Array([1, 1, 1]); + + var tempNormalizeMatrix = new Float32Array(3); + var tempConvertMatrix1 = new Float32Array(3); + var tempConvertMatrix2 = new Float32Array(3); + + var DECODE_L_CONSTANT = Math.pow(((8 + 16) / 116), 3) / 8.0; + + function CalRGBCS(whitePoint, blackPoint, gamma, matrix) { + this.name = 'CalRGB'; + this.numComps = 3; + this.defaultColor = new Float32Array(3); + + if (!whitePoint) { + error('WhitePoint missing - required for color space CalRGB'); + } + blackPoint = blackPoint || new Float32Array(3); + gamma = gamma || new Float32Array([1, 1, 1]); + matrix = matrix || new Float32Array([1, 0, 0, 0, 1, 0, 0, 0, 1]); + + // Translate arguments to spec variables. + var XW = whitePoint[0]; + var YW = whitePoint[1]; + var ZW = whitePoint[2]; + this.whitePoint = whitePoint; + + var XB = blackPoint[0]; + var YB = blackPoint[1]; + var ZB = blackPoint[2]; + this.blackPoint = blackPoint; + + this.GR = gamma[0]; + this.GG = gamma[1]; + this.GB = gamma[2]; + + this.MXA = matrix[0]; + this.MYA = matrix[1]; + this.MZA = matrix[2]; + this.MXB = matrix[3]; + this.MYB = matrix[4]; + this.MZB = matrix[5]; + this.MXC = matrix[6]; + this.MYC = matrix[7]; + this.MZC = matrix[8]; + + // Validate variables as per spec. + if (XW < 0 || ZW < 0 || YW !== 1) { + error('Invalid WhitePoint components for ' + this.name + + ', no fallback available'); + } + + if (XB < 0 || YB < 0 || ZB < 0) { + info('Invalid BlackPoint for ' + this.name + ' [' + XB + ', ' + YB + + ', ' + ZB + '], falling back to default'); + this.blackPoint = new Float32Array(3); + } + + if (this.GR < 0 || this.GG < 0 || this.GB < 0) { + info('Invalid Gamma [' + this.GR + ', ' + this.GG + ', ' + this.GB + + '] for ' + this.name + ', falling back to default'); + this.GR = this.GG = this.GB = 1; + } + + if (this.MXA < 0 || this.MYA < 0 || this.MZA < 0 || + this.MXB < 0 || this.MYB < 0 || this.MZB < 0 || + this.MXC < 0 || this.MYC < 0 || this.MZC < 0) { + info('Invalid Matrix for ' + this.name + ' [' + + this.MXA + ', ' + this.MYA + ', ' + this.MZA + + this.MXB + ', ' + this.MYB + ', ' + this.MZB + + this.MXC + ', ' + this.MYC + ', ' + this.MZC + + '], falling back to default'); + this.MXA = this.MYB = this.MZC = 1; + this.MXB = this.MYA = this.MZA = this.MXC = this.MYC = this.MZB = 0; + } + } + + function matrixProduct(a, b, result) { + result[0] = a[0] * b[0] + a[1] * b[1] + a[2] * b[2]; + result[1] = a[3] * b[0] + a[4] * b[1] + a[5] * b[2]; + result[2] = a[6] * b[0] + a[7] * b[1] + a[8] * b[2]; + } + + function convertToFlat(sourceWhitePoint, LMS, result) { + result[0] = LMS[0] * 1 / sourceWhitePoint[0]; + result[1] = LMS[1] * 1 / sourceWhitePoint[1]; + result[2] = LMS[2] * 1 / sourceWhitePoint[2]; + } + + function convertToD65(sourceWhitePoint, LMS, result) { + var D65X = 0.95047; + var D65Y = 1; + var D65Z = 1.08883; + + result[0] = LMS[0] * D65X / sourceWhitePoint[0]; + result[1] = LMS[1] * D65Y / sourceWhitePoint[1]; + result[2] = LMS[2] * D65Z / sourceWhitePoint[2]; + } + + function sRGBTransferFunction(color) { + // See http://en.wikipedia.org/wiki/SRGB. + if (color <= 0.0031308){ + return adjustToRange(0, 1, 12.92 * color); + } + + return adjustToRange(0, 1, (1 + 0.055) * Math.pow(color, 1 / 2.4) - 0.055); + } + + function adjustToRange(min, max, value) { + return Math.max(min, Math.min(max, value)); + } + + function decodeL(L) { + if (L < 0) { + return -decodeL(-L); + } + + if (L > 8.0) { + return Math.pow(((L + 16) / 116), 3); + } + + return L * DECODE_L_CONSTANT; + } + + function compensateBlackPoint(sourceBlackPoint, XYZ_Flat, result) { + + // In case the blackPoint is already the default blackPoint then there is + // no need to do compensation. + if (sourceBlackPoint[0] === 0 && + sourceBlackPoint[1] === 0 && + sourceBlackPoint[2] === 0) { + result[0] = XYZ_Flat[0]; + result[1] = XYZ_Flat[1]; + result[2] = XYZ_Flat[2]; + return; + } + + // For the blackPoint calculation details, please see + // http://www.adobe.com/content/dam/Adobe/en/devnet/photoshop/sdk/ + // AdobeBPC.pdf. + // The destination blackPoint is the default blackPoint [0, 0, 0]. + var zeroDecodeL = decodeL(0); + + var X_DST = zeroDecodeL; + var X_SRC = decodeL(sourceBlackPoint[0]); + + var Y_DST = zeroDecodeL; + var Y_SRC = decodeL(sourceBlackPoint[1]); + + var Z_DST = zeroDecodeL; + var Z_SRC = decodeL(sourceBlackPoint[2]); + + var X_Scale = (1 - X_DST) / (1 - X_SRC); + var X_Offset = 1 - X_Scale; + + var Y_Scale = (1 - Y_DST) / (1 - Y_SRC); + var Y_Offset = 1 - Y_Scale; + + var Z_Scale = (1 - Z_DST) / (1 - Z_SRC); + var Z_Offset = 1 - Z_Scale; + + result[0] = XYZ_Flat[0] * X_Scale + X_Offset; + result[1] = XYZ_Flat[1] * Y_Scale + Y_Offset; + result[2] = XYZ_Flat[2] * Z_Scale + Z_Offset; + } + + function normalizeWhitePointToFlat(sourceWhitePoint, XYZ_In, result) { + + // In case the whitePoint is already flat then there is no need to do + // normalization. + if (sourceWhitePoint[0] === 1 && sourceWhitePoint[2] === 1) { + result[0] = XYZ_In[0]; + result[1] = XYZ_In[1]; + result[2] = XYZ_In[2]; + return; + } + + var LMS = result; + matrixProduct(BRADFORD_SCALE_MATRIX, XYZ_In, LMS); + + var LMS_Flat = tempNormalizeMatrix; + convertToFlat(sourceWhitePoint, LMS, LMS_Flat); + + matrixProduct(BRADFORD_SCALE_INVERSE_MATRIX, LMS_Flat, result); + } + + function normalizeWhitePointToD65(sourceWhitePoint, XYZ_In, result) { + + var LMS = result; + matrixProduct(BRADFORD_SCALE_MATRIX, XYZ_In, LMS); + + var LMS_D65 = tempNormalizeMatrix; + convertToD65(sourceWhitePoint, LMS, LMS_D65); + + matrixProduct(BRADFORD_SCALE_INVERSE_MATRIX, LMS_D65, result); + } + + function convertToRgb(cs, src, srcOffset, dest, destOffset, scale) { + // A, B and C represent a red, green and blue components of a calibrated + // rgb space. + var A = adjustToRange(0, 1, src[srcOffset] * scale); + var B = adjustToRange(0, 1, src[srcOffset + 1] * scale); + var C = adjustToRange(0, 1, src[srcOffset + 2] * scale); + + // A <---> AGR in the spec + // B <---> BGG in the spec + // C <---> CGB in the spec + var AGR = Math.pow(A, cs.GR); + var BGG = Math.pow(B, cs.GG); + var CGB = Math.pow(C, cs.GB); + + // Computes intermediate variables L, M, N as per spec. + // To decode X, Y, Z values map L, M, N directly to them. + var X = cs.MXA * AGR + cs.MXB * BGG + cs.MXC * CGB; + var Y = cs.MYA * AGR + cs.MYB * BGG + cs.MYC * CGB; + var Z = cs.MZA * AGR + cs.MZB * BGG + cs.MZC * CGB; + + // The following calculations are based on this document: + // http://www.adobe.com/content/dam/Adobe/en/devnet/photoshop/sdk/ + // AdobeBPC.pdf. + var XYZ = tempConvertMatrix1; + XYZ[0] = X; + XYZ[1] = Y; + XYZ[2] = Z; + var XYZ_Flat = tempConvertMatrix2; + + normalizeWhitePointToFlat(cs.whitePoint, XYZ, XYZ_Flat); + + var XYZ_Black = tempConvertMatrix1; + compensateBlackPoint(cs.blackPoint, XYZ_Flat, XYZ_Black); + + var XYZ_D65 = tempConvertMatrix2; + normalizeWhitePointToD65(FLAT_WHITEPOINT_MATRIX, XYZ_Black, XYZ_D65); + + var SRGB = tempConvertMatrix1; + matrixProduct(SRGB_D65_XYZ_TO_RGB_MATRIX, XYZ_D65, SRGB); + + var sR = sRGBTransferFunction(SRGB[0]); + var sG = sRGBTransferFunction(SRGB[1]); + var sB = sRGBTransferFunction(SRGB[2]); + + // Convert the values to rgb range [0, 255]. + dest[destOffset] = Math.round(sR * 255); + dest[destOffset + 1] = Math.round(sG * 255); + dest[destOffset + 2] = Math.round(sB * 255); + } + + CalRGBCS.prototype = { + getRgb: function CalRGBCS_getRgb(src, srcOffset) { + var rgb = new Uint8Array(3); + this.getRgbItem(src, srcOffset, rgb, 0); + return rgb; + }, + getRgbItem: function CalRGBCS_getRgbItem(src, srcOffset, + dest, destOffset) { + convertToRgb(this, src, srcOffset, dest, destOffset, 1); + }, + getRgbBuffer: function CalRGBCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + var scale = 1 / ((1 << bits) - 1); + + for (var i = 0; i < count; ++i) { + convertToRgb(this, src, srcOffset, dest, destOffset, scale); + srcOffset += 3; + destOffset += 3 + alpha01; + } + }, + getOutputLength: function CalRGBCS_getOutputLength(inputLength, alpha01) { + return (inputLength * (3 + alpha01) / 3) | 0; + }, + isPassthrough: ColorSpace.prototype.isPassthrough, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function CalRGBCS_isDefaultDecode(decodeMap) { + return ColorSpace.isDefaultDecode(decodeMap, this.numComps); + }, + usesZeroToOneRange: true + }; + return CalRGBCS; +})(); + +// +// LabCS: Based on "PDF Reference, Sixth Ed", p.250 +// +var LabCS = (function LabCSClosure() { + function LabCS(whitePoint, blackPoint, range) { + this.name = 'Lab'; + this.numComps = 3; + this.defaultColor = new Float32Array([0, 0, 0]); + + if (!whitePoint) { + error('WhitePoint missing - required for color space Lab'); + } + blackPoint = blackPoint || [0, 0, 0]; + range = range || [-100, 100, -100, 100]; + + // Translate args to spec variables + this.XW = whitePoint[0]; + this.YW = whitePoint[1]; + this.ZW = whitePoint[2]; + this.amin = range[0]; + this.amax = range[1]; + this.bmin = range[2]; + this.bmax = range[3]; + + // These are here just for completeness - the spec doesn't offer any + // formulas that use BlackPoint in Lab + this.XB = blackPoint[0]; + this.YB = blackPoint[1]; + this.ZB = blackPoint[2]; + + // Validate vars as per spec + if (this.XW < 0 || this.ZW < 0 || this.YW !== 1) { + error('Invalid WhitePoint components, no fallback available'); + } + + if (this.XB < 0 || this.YB < 0 || this.ZB < 0) { + info('Invalid BlackPoint, falling back to default'); + this.XB = this.YB = this.ZB = 0; + } + + if (this.amin > this.amax || this.bmin > this.bmax) { + info('Invalid Range, falling back to defaults'); + this.amin = -100; + this.amax = 100; + this.bmin = -100; + this.bmax = 100; + } + } + + // Function g(x) from spec + function fn_g(x) { + if (x >= 6 / 29) { + return x * x * x; + } else { + return (108 / 841) * (x - 4 / 29); + } + } + + function decode(value, high1, low2, high2) { + return low2 + (value) * (high2 - low2) / (high1); + } + + // If decoding is needed maxVal should be 2^bits per component - 1. + function convertToRgb(cs, src, srcOffset, maxVal, dest, destOffset) { + // XXX: Lab input is in the range of [0, 100], [amin, amax], [bmin, bmax] + // not the usual [0, 1]. If a command like setFillColor is used the src + // values will already be within the correct range. However, if we are + // converting an image we have to map the values to the correct range given + // above. + // Ls,as,bs <---> L*,a*,b* in the spec + var Ls = src[srcOffset]; + var as = src[srcOffset + 1]; + var bs = src[srcOffset + 2]; + if (maxVal !== false) { + Ls = decode(Ls, maxVal, 0, 100); + as = decode(as, maxVal, cs.amin, cs.amax); + bs = decode(bs, maxVal, cs.bmin, cs.bmax); + } + + // Adjust limits of 'as' and 'bs' + as = as > cs.amax ? cs.amax : as < cs.amin ? cs.amin : as; + bs = bs > cs.bmax ? cs.bmax : bs < cs.bmin ? cs.bmin : bs; + + // Computes intermediate variables X,Y,Z as per spec + var M = (Ls + 16) / 116; + var L = M + (as / 500); + var N = M - (bs / 200); + + var X = cs.XW * fn_g(L); + var Y = cs.YW * fn_g(M); + var Z = cs.ZW * fn_g(N); + + var r, g, b; + // Using different conversions for D50 and D65 white points, + // per http://www.color.org/srgb.pdf + if (cs.ZW < 1) { + // Assuming D50 (X=0.9642, Y=1.00, Z=0.8249) + r = X * 3.1339 + Y * -1.6170 + Z * -0.4906; + g = X * -0.9785 + Y * 1.9160 + Z * 0.0333; + b = X * 0.0720 + Y * -0.2290 + Z * 1.4057; + } else { + // Assuming D65 (X=0.9505, Y=1.00, Z=1.0888) + r = X * 3.2406 + Y * -1.5372 + Z * -0.4986; + g = X * -0.9689 + Y * 1.8758 + Z * 0.0415; + b = X * 0.0557 + Y * -0.2040 + Z * 1.0570; + } + // clamp color values to [0,1] range then convert to [0,255] range. + dest[destOffset] = r <= 0 ? 0 : r >= 1 ? 255 : Math.sqrt(r) * 255 | 0; + dest[destOffset + 1] = g <= 0 ? 0 : g >= 1 ? 255 : Math.sqrt(g) * 255 | 0; + dest[destOffset + 2] = b <= 0 ? 0 : b >= 1 ? 255 : Math.sqrt(b) * 255 | 0; + } + + LabCS.prototype = { + getRgb: ColorSpace.prototype.getRgb, + getRgbItem: function LabCS_getRgbItem(src, srcOffset, dest, destOffset) { + convertToRgb(this, src, srcOffset, false, dest, destOffset); + }, + getRgbBuffer: function LabCS_getRgbBuffer(src, srcOffset, count, + dest, destOffset, bits, + alpha01) { + var maxVal = (1 << bits) - 1; + for (var i = 0; i < count; i++) { + convertToRgb(this, src, srcOffset, maxVal, dest, destOffset); + srcOffset += 3; + destOffset += 3 + alpha01; + } + }, + getOutputLength: function LabCS_getOutputLength(inputLength, alpha01) { + return (inputLength * (3 + alpha01) / 3) | 0; + }, + isPassthrough: ColorSpace.prototype.isPassthrough, + fillRgb: ColorSpace.prototype.fillRgb, + isDefaultDecode: function LabCS_isDefaultDecode(decodeMap) { + // XXX: Decoding is handled with the lab conversion because of the strange + // ranges that are used. + return true; + }, + usesZeroToOneRange: false + }; + return LabCS; +})(); var ARCFourCipher = (function ARCFourCipherClosure() { @@ -13923,8 +7753,9 @@ var ARCFourCipher = (function ARCFourCipherClosure() { this.b = 0; var s = new Uint8Array(256); var i, j = 0, tmp, keyLength = key.length; - for (i = 0; i < 256; ++i) + for (i = 0; i < 256; ++i) { s[i] = i; + } for (i = 0; i < 256; ++i) { tmp = s[i]; j = (j + tmp + key[i % keyLength]) & 0xFF; @@ -13984,12 +7815,14 @@ var calculateMD5 = (function calculateMD5Closure() { var paddedLength = (length + 72) & ~63; // data + 9 extra bytes var padded = new Uint8Array(paddedLength); var i, j, n; - for (i = 0; i < length; ++i) + for (i = 0; i < length; ++i) { padded[i] = data[offset++]; + } padded[i++] = 0x80; n = paddedLength - 8; - while (i < n) + while (i < n) { padded[i++] = 0; + } padded[i++] = (length << 3) & 0xFF; padded[i++] = (length >> 5) & 0xFF; padded[i++] = (length >> 13) & 0xFF; @@ -13998,13 +7831,11 @@ var calculateMD5 = (function calculateMD5Closure() { padded[i++] = 0; padded[i++] = 0; padded[i++] = 0; - // chunking - // TODO ArrayBuffer ? var w = new Int32Array(16); for (i = 0; i < paddedLength;) { for (j = 0; j < 16; ++j, i += 4) { w[j] = (padded[i] | (padded[i + 1] << 8) | - (padded[i + 2] << 16) | (padded[i + 3] << 24)); + (padded[i + 2] << 16) | (padded[i + 3] << 24)); } var a = h0, b = h1, c = h2, d = h3, f, g; for (j = 0; j < 64; ++j) { @@ -14033,15 +7864,487 @@ var calculateMD5 = (function calculateMD5Closure() { h3 = (h3 + d) | 0; } return new Uint8Array([ - h0 & 0xFF, (h0 >> 8) & 0xFF, (h0 >> 16) & 0xFF, (h0 >>> 24) & 0xFF, - h1 & 0xFF, (h1 >> 8) & 0xFF, (h1 >> 16) & 0xFF, (h1 >>> 24) & 0xFF, - h2 & 0xFF, (h2 >> 8) & 0xFF, (h2 >> 16) & 0xFF, (h2 >>> 24) & 0xFF, - h3 & 0xFF, (h3 >> 8) & 0xFF, (h3 >> 16) & 0xFF, (h3 >>> 24) & 0xFF + h0 & 0xFF, (h0 >> 8) & 0xFF, (h0 >> 16) & 0xFF, (h0 >>> 24) & 0xFF, + h1 & 0xFF, (h1 >> 8) & 0xFF, (h1 >> 16) & 0xFF, (h1 >>> 24) & 0xFF, + h2 & 0xFF, (h2 >> 8) & 0xFF, (h2 >> 16) & 0xFF, (h2 >>> 24) & 0xFF, + h3 & 0xFF, (h3 >> 8) & 0xFF, (h3 >> 16) & 0xFF, (h3 >>> 24) & 0xFF ]); } + + return hash; +})(); +var Word64 = (function Word64Closure() { + function Word64(highInteger, lowInteger) { + this.high = highInteger | 0; + this.low = lowInteger | 0; + } + Word64.prototype = { + and: function Word64_and(word) { + this.high &= word.high; + this.low &= word.low; + }, + xor: function Word64_xor(word) { + this.high ^= word.high; + this.low ^= word.low; + }, + + or: function Word64_or(word) { + this.high |= word.high; + this.low |= word.low; + }, + + shiftRight: function Word64_shiftRight(places) { + if (places >= 32) { + this.low = (this.high >>> (places - 32)) | 0; + this.high = 0; + } else { + this.low = (this.low >>> places) | (this.high << (32 - places)); + this.high = (this.high >>> places) | 0; + } + }, + + shiftLeft: function Word64_shiftLeft(places) { + if (places >= 32) { + this.high = this.low << (places - 32); + this.low = 0; + } else { + this.high = (this.high << places) | (this.low >>> (32 - places)); + this.low = this.low << places; + } + }, + + rotateRight: function Word64_rotateRight(places) { + var low, high; + if (places & 32) { + high = this.low; + low = this.high; + } else { + low = this.low; + high = this.high; + } + places &= 31; + this.low = (low >>> places) | (high << (32 - places)); + this.high = (high >>> places) | (low << (32 - places)); + }, + + not: function Word64_not() { + this.high = ~this.high; + this.low = ~this.low; + }, + + add: function Word64_add(word) { + var lowAdd = (this.low >>> 0) + (word.low >>> 0); + var highAdd = (this.high >>> 0) + (word.high >>> 0); + if (lowAdd > 0xFFFFFFFF) { + highAdd += 1; + } + this.low = lowAdd | 0; + this.high = highAdd | 0; + }, + + copyTo: function Word64_copyTo(bytes, offset) { + bytes[offset] = (this.high >>> 24) & 0xFF; + bytes[offset + 1] = (this.high >> 16) & 0xFF; + bytes[offset + 2] = (this.high >> 8) & 0xFF; + bytes[offset + 3] = this.high & 0xFF; + bytes[offset + 4] = (this.low >>> 24) & 0xFF; + bytes[offset + 5] = (this.low >> 16) & 0xFF; + bytes[offset + 6] = (this.low >> 8) & 0xFF; + bytes[offset + 7] = this.low & 0xFF; + }, + + assign: function Word64_assign(word) { + this.high = word.high; + this.low = word.low; + } + }; + return Word64; +})(); + +var calculateSHA256 = (function calculateSHA256Closure() { + function rotr(x, n) { + return (x >>> n) | (x << 32 - n); + } + + function ch(x, y, z) { + return (x & y) ^ (~x & z); + } + + function maj(x, y, z) { + return (x & y) ^ (x & z) ^ (y & z); + } + + function sigma(x) { + return rotr(x, 2) ^ rotr(x, 13) ^ rotr(x, 22); + } + + function sigmaPrime(x) { + return rotr(x, 6) ^ rotr(x, 11) ^ rotr(x, 25); + } + + function littleSigma(x) { + return rotr(x, 7) ^ rotr(x, 18) ^ x >>> 3; + } + + function littleSigmaPrime(x) { + return rotr(x, 17) ^ rotr(x, 19) ^ x >>> 10; + } + + var k = [0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, + 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, + 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, + 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, + 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, + 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, + 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, + 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, + 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, + 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, + 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, + 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, + 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, + 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, + 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, + 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2]; + + function hash(data, offset, length) { + // initial hash values + var h0 = 0x6a09e667, h1 = 0xbb67ae85, h2 = 0x3c6ef372, + h3 = 0xa54ff53a, h4 = 0x510e527f, h5 = 0x9b05688c, + h6 = 0x1f83d9ab, h7 = 0x5be0cd19; + // pre-processing + var paddedLength = Math.ceil((length + 9) / 64) * 64; + var padded = new Uint8Array(paddedLength); + var i, j, n; + for (i = 0; i < length; ++i) { + padded[i] = data[offset++]; + } + padded[i++] = 0x80; + n = paddedLength - 8; + while (i < n) { + padded[i++] = 0; + } + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = (length >>> 29) & 0xFF; + padded[i++] = (length >> 21) & 0xFF; + padded[i++] = (length >> 13) & 0xFF; + padded[i++] = (length >> 5) & 0xFF; + padded[i++] = (length << 3) & 0xFF; + var w = new Uint32Array(64); + // for each 512 bit block + for (i = 0; i < paddedLength;) { + for (j = 0; j < 16; ++j) { + w[j] = (padded[i] << 24 | (padded[i + 1] << 16) | + (padded[i + 2] << 8) | (padded[i + 3])); + i += 4; + } + + for (j = 16; j < 64; ++j) { + w[j] = littleSigmaPrime(w[j - 2]) + w[j - 7] + + littleSigma(w[j - 15]) + w[j - 16] | 0; + } + var a = h0, b = h1, c = h2, d = h3, e = h4, + f = h5, g = h6, h = h7, t1, t2; + for (j = 0; j < 64; ++j) { + t1 = h + sigmaPrime(e) + ch(e, f, g) + k[j] + w[j]; + t2 = sigma(a) + maj(a, b, c); + h = g; + g = f; + f = e; + e = (d + t1) | 0; + d = c; + c = b; + b = a; + a = (t1 + t2) | 0; + } + h0 = (h0 + a) | 0; + h1 = (h1 + b) | 0; + h2 = (h2 + c) | 0; + h3 = (h3 + d) | 0; + h4 = (h4 + e) | 0; + h5 = (h5 + f) | 0; + h6 = (h6 + g) | 0; + h7 = (h7 + h) | 0; + } + return new Uint8Array([ + (h0 >> 24) & 0xFF, (h0 >> 16) & 0xFF, (h0 >> 8) & 0xFF, (h0) & 0xFF, + (h1 >> 24) & 0xFF, (h1 >> 16) & 0xFF, (h1 >> 8) & 0xFF, (h1) & 0xFF, + (h2 >> 24) & 0xFF, (h2 >> 16) & 0xFF, (h2 >> 8) & 0xFF, (h2) & 0xFF, + (h3 >> 24) & 0xFF, (h3 >> 16) & 0xFF, (h3 >> 8) & 0xFF, (h3) & 0xFF, + (h4 >> 24) & 0xFF, (h4 >> 16) & 0xFF, (h4 >> 8) & 0xFF, (h4) & 0xFF, + (h5 >> 24) & 0xFF, (h5 >> 16) & 0xFF, (h5 >> 8) & 0xFF, (h5) & 0xFF, + (h6 >> 24) & 0xFF, (h6 >> 16) & 0xFF, (h6 >> 8) & 0xFF, (h6) & 0xFF, + (h7 >> 24) & 0xFF, (h7 >> 16) & 0xFF, (h7 >> 8) & 0xFF, (h7) & 0xFF + ]); + } + return hash; })(); +var calculateSHA512 = (function calculateSHA512Closure() { + function ch(result, x, y, z, tmp) { + result.assign(x); + result.and(y); + tmp.assign(x); + tmp.not(); + tmp.and(z); + result.xor(tmp); + } + + function maj(result, x, y, z, tmp) { + result.assign(x); + result.and(y); + tmp.assign(x); + tmp.and(z); + result.xor(tmp); + tmp.assign(y); + tmp.and(z); + result.xor(tmp); + } + + function sigma(result, x, tmp) { + result.assign(x); + result.rotateRight(28); + tmp.assign(x); + tmp.rotateRight(34); + result.xor(tmp); + tmp.assign(x); + tmp.rotateRight(39); + result.xor(tmp); + } + + function sigmaPrime(result, x, tmp) { + result.assign(x); + result.rotateRight(14); + tmp.assign(x); + tmp.rotateRight(18); + result.xor(tmp); + tmp.assign(x); + tmp.rotateRight(41); + result.xor(tmp); + } + + function littleSigma(result, x, tmp) { + result.assign(x); + result.rotateRight(1); + tmp.assign(x); + tmp.rotateRight(8); + result.xor(tmp); + tmp.assign(x); + tmp.shiftRight(7); + result.xor(tmp); + } + + function littleSigmaPrime(result, x, tmp) { + result.assign(x); + result.rotateRight(19); + tmp.assign(x); + tmp.rotateRight(61); + result.xor(tmp); + tmp.assign(x); + tmp.shiftRight(6); + result.xor(tmp); + } + + var k = [ + new Word64(0x428a2f98, 0xd728ae22), new Word64(0x71374491, 0x23ef65cd), + new Word64(0xb5c0fbcf, 0xec4d3b2f), new Word64(0xe9b5dba5, 0x8189dbbc), + new Word64(0x3956c25b, 0xf348b538), new Word64(0x59f111f1, 0xb605d019), + new Word64(0x923f82a4, 0xaf194f9b), new Word64(0xab1c5ed5, 0xda6d8118), + new Word64(0xd807aa98, 0xa3030242), new Word64(0x12835b01, 0x45706fbe), + new Word64(0x243185be, 0x4ee4b28c), new Word64(0x550c7dc3, 0xd5ffb4e2), + new Word64(0x72be5d74, 0xf27b896f), new Word64(0x80deb1fe, 0x3b1696b1), + new Word64(0x9bdc06a7, 0x25c71235), new Word64(0xc19bf174, 0xcf692694), + new Word64(0xe49b69c1, 0x9ef14ad2), new Word64(0xefbe4786, 0x384f25e3), + new Word64(0x0fc19dc6, 0x8b8cd5b5), new Word64(0x240ca1cc, 0x77ac9c65), + new Word64(0x2de92c6f, 0x592b0275), new Word64(0x4a7484aa, 0x6ea6e483), + new Word64(0x5cb0a9dc, 0xbd41fbd4), new Word64(0x76f988da, 0x831153b5), + new Word64(0x983e5152, 0xee66dfab), new Word64(0xa831c66d, 0x2db43210), + new Word64(0xb00327c8, 0x98fb213f), new Word64(0xbf597fc7, 0xbeef0ee4), + new Word64(0xc6e00bf3, 0x3da88fc2), new Word64(0xd5a79147, 0x930aa725), + new Word64(0x06ca6351, 0xe003826f), new Word64(0x14292967, 0x0a0e6e70), + new Word64(0x27b70a85, 0x46d22ffc), new Word64(0x2e1b2138, 0x5c26c926), + new Word64(0x4d2c6dfc, 0x5ac42aed), new Word64(0x53380d13, 0x9d95b3df), + new Word64(0x650a7354, 0x8baf63de), new Word64(0x766a0abb, 0x3c77b2a8), + new Word64(0x81c2c92e, 0x47edaee6), new Word64(0x92722c85, 0x1482353b), + new Word64(0xa2bfe8a1, 0x4cf10364), new Word64(0xa81a664b, 0xbc423001), + new Word64(0xc24b8b70, 0xd0f89791), new Word64(0xc76c51a3, 0x0654be30), + new Word64(0xd192e819, 0xd6ef5218), new Word64(0xd6990624, 0x5565a910), + new Word64(0xf40e3585, 0x5771202a), new Word64(0x106aa070, 0x32bbd1b8), + new Word64(0x19a4c116, 0xb8d2d0c8), new Word64(0x1e376c08, 0x5141ab53), + new Word64(0x2748774c, 0xdf8eeb99), new Word64(0x34b0bcb5, 0xe19b48a8), + new Word64(0x391c0cb3, 0xc5c95a63), new Word64(0x4ed8aa4a, 0xe3418acb), + new Word64(0x5b9cca4f, 0x7763e373), new Word64(0x682e6ff3, 0xd6b2b8a3), + new Word64(0x748f82ee, 0x5defb2fc), new Word64(0x78a5636f, 0x43172f60), + new Word64(0x84c87814, 0xa1f0ab72), new Word64(0x8cc70208, 0x1a6439ec), + new Word64(0x90befffa, 0x23631e28), new Word64(0xa4506ceb, 0xde82bde9), + new Word64(0xbef9a3f7, 0xb2c67915), new Word64(0xc67178f2, 0xe372532b), + new Word64(0xca273ece, 0xea26619c), new Word64(0xd186b8c7, 0x21c0c207), + new Word64(0xeada7dd6, 0xcde0eb1e), new Word64(0xf57d4f7f, 0xee6ed178), + new Word64(0x06f067aa, 0x72176fba), new Word64(0x0a637dc5, 0xa2c898a6), + new Word64(0x113f9804, 0xbef90dae), new Word64(0x1b710b35, 0x131c471b), + new Word64(0x28db77f5, 0x23047d84), new Word64(0x32caab7b, 0x40c72493), + new Word64(0x3c9ebe0a, 0x15c9bebc), new Word64(0x431d67c4, 0x9c100d4c), + new Word64(0x4cc5d4be, 0xcb3e42b6), new Word64(0x597f299c, 0xfc657e2a), + new Word64(0x5fcb6fab, 0x3ad6faec), new Word64(0x6c44198c, 0x4a475817)]; + + function hash(data, offset, length, mode384) { + mode384 = !!mode384; + // initial hash values + var h0, h1, h2, h3, h4, h5, h6, h7; + if (!mode384) { + h0 = new Word64(0x6a09e667, 0xf3bcc908); + h1 = new Word64(0xbb67ae85, 0x84caa73b); + h2 = new Word64(0x3c6ef372, 0xfe94f82b); + h3 = new Word64(0xa54ff53a, 0x5f1d36f1); + h4 = new Word64(0x510e527f, 0xade682d1); + h5 = new Word64(0x9b05688c, 0x2b3e6c1f); + h6 = new Word64(0x1f83d9ab, 0xfb41bd6b); + h7 = new Word64(0x5be0cd19, 0x137e2179); + } + else { + // SHA384 is exactly the same + // except with different starting values and a trimmed result + h0 = new Word64(0xcbbb9d5d, 0xc1059ed8); + h1 = new Word64(0x629a292a, 0x367cd507); + h2 = new Word64(0x9159015a, 0x3070dd17); + h3 = new Word64(0x152fecd8, 0xf70e5939); + h4 = new Word64(0x67332667, 0xffc00b31); + h5 = new Word64(0x8eb44a87, 0x68581511); + h6 = new Word64(0xdb0c2e0d, 0x64f98fa7); + h7 = new Word64(0x47b5481d, 0xbefa4fa4); + } + + // pre-processing + var paddedLength = Math.ceil((length + 17) / 128) * 128; + var padded = new Uint8Array(paddedLength); + var i, j, n; + for (i = 0; i < length; ++i) { + padded[i] = data[offset++]; + } + padded[i++] = 0x80; + n = paddedLength - 16; + while (i < n) { + padded[i++] = 0; + } + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = 0; + padded[i++] = (length >>> 29) & 0xFF; + padded[i++] = (length >> 21) & 0xFF; + padded[i++] = (length >> 13) & 0xFF; + padded[i++] = (length >> 5) & 0xFF; + padded[i++] = (length << 3) & 0xFF; + + var w = new Array(80); + for (i = 0; i < 80; i++) { + w[i] = new Word64(0, 0); + } + var a = new Word64(0, 0), b = new Word64(0, 0), c = new Word64(0, 0); + var d = new Word64(0, 0), e = new Word64(0, 0), f = new Word64(0, 0); + var g = new Word64(0, 0), h = new Word64(0, 0); + var t1 = new Word64(0, 0), t2 = new Word64(0, 0); + var tmp1 = new Word64(0, 0), tmp2 = new Word64(0, 0), tmp3; + + // for each 1024 bit block + for (i = 0; i < paddedLength;) { + for (j = 0; j < 16; ++j) { + w[j].high = (padded[i] << 24) | (padded[i + 1] << 16) | + (padded[i + 2] << 8) | (padded[i + 3]); + w[j].low = (padded[i + 4]) << 24 | (padded[i + 5]) << 16 | + (padded[i + 6]) << 8 | (padded[i + 7]); + i += 8; + } + for (j = 16; j < 80; ++j) { + tmp3 = w[j]; + littleSigmaPrime(tmp3, w[j - 2], tmp2); + tmp3.add(w[j - 7]); + littleSigma(tmp1, w[j - 15], tmp2); + tmp3.add(tmp1); + tmp3.add(w[j - 16]); + } + + a.assign(h0); b.assign(h1); c.assign(h2); d.assign(h3); + e.assign(h4); f.assign(h5); g.assign(h6); h.assign(h7); + for (j = 0; j < 80; ++j) { + t1.assign(h); + sigmaPrime(tmp1, e, tmp2); + t1.add(tmp1); + ch(tmp1, e, f, g, tmp2); + t1.add(tmp1); + t1.add(k[j]); + t1.add(w[j]); + + sigma(t2, a, tmp2); + maj(tmp1, a, b, c, tmp2); + t2.add(tmp1); + + tmp3 = h; + h = g; + g = f; + f = e; + d.add(t1); + e = d; + d = c; + c = b; + b = a; + tmp3.assign(t1); + tmp3.add(t2); + a = tmp3; + } + h0.add(a); + h1.add(b); + h2.add(c); + h3.add(d); + h4.add(e); + h5.add(f); + h6.add(g); + h7.add(h); + } + + var result; + if (!mode384) { + result = new Uint8Array(64); + h0.copyTo(result,0); + h1.copyTo(result,8); + h2.copyTo(result,16); + h3.copyTo(result,24); + h4.copyTo(result,32); + h5.copyTo(result,40); + h6.copyTo(result,48); + h7.copyTo(result,56); + } + else { + result = new Uint8Array(48); + h0.copyTo(result,0); + h1.copyTo(result,8); + h2.copyTo(result,16); + h3.copyTo(result,24); + h4.copyTo(result,32); + h5.copyTo(result,40); + } + return result; + } + + return hash; +})(); +var calculateSHA384 = (function calculateSHA384Closure() { + function hash(data, offset, length) { + return calculateSHA512(data, offset, length, true); + } + + return hash; +})(); var NullCipher = (function NullCipherClosure() { function NullCipher() { } @@ -14127,7 +8430,14 @@ var AES128Cipher = (function AES128CipherClosure() { 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d]); - + var mixCol = new Uint8Array(256); + for (var i = 0; i < 256; i++) { + if (i < 128) { + mixCol[i] = i << 1; + } else { + mixCol[i] = (i << 1) ^ 0x1b; + } + } var mix = new Uint32Array([ 0x00000000, 0x0e090d0b, 0x1c121a16, 0x121b171d, 0x3824342c, 0x362d3927, 0x24362e3a, 0x2a3f2331, 0x70486858, 0x7e416553, 0x6c5a724e, 0x62537f45, @@ -14181,14 +8491,21 @@ var AES128Cipher = (function AES128CipherClosure() { var t1 = result[j - 3], t2 = result[j - 2], t3 = result[j - 1], t4 = result[j - 4]; // SubWord - t1 = s[t1]; t2 = s[t2]; t3 = s[t3]; t4 = s[t4]; + t1 = s[t1]; + t2 = s[t2]; + t3 = s[t3]; + t4 = s[t4]; // Rcon t1 = t1 ^ rcon[i]; for (var n = 0; n < 4; ++n) { - result[j] = (t1 ^= result[j - 16]); j++; - result[j] = (t2 ^= result[j - 16]); j++; - result[j] = (t3 ^= result[j - 16]); j++; - result[j] = (t4 ^= result[j - 16]); j++; + result[j] = (t1 ^= result[j - 16]); + j++; + result[j] = (t2 ^= result[j - 16]); + j++; + result[j] = (t3 ^= result[j - 16]); + j++; + result[j] = (t4 ^= result[j - 16]); + j++; } } return result; @@ -14200,28 +8517,43 @@ var AES128Cipher = (function AES128CipherClosure() { var i, j, k; var t, u, v; // AddRoundKey - for (j = 0, k = 160; j < 16; ++j, ++k) + for (j = 0, k = 160; j < 16; ++j, ++k) { state[j] ^= key[k]; + } for (i = 9; i >= 1; --i) { // InvShiftRows - t = state[13]; state[13] = state[9]; state[9] = state[5]; - state[5] = state[1]; state[1] = t; - t = state[14]; u = state[10]; state[14] = state[6]; - state[10] = state[2]; state[6] = t; state[2] = u; - t = state[15]; u = state[11]; v = state[7]; state[15] = state[3]; - state[11] = t; state[7] = u; state[3] = v; + t = state[13]; + state[13] = state[9]; + state[9] = state[5]; + state[5] = state[1]; + state[1] = t; + t = state[14]; + u = state[10]; + state[14] = state[6]; + state[10] = state[2]; + state[6] = t; + state[2] = u; + t = state[15]; + u = state[11]; + v = state[7]; + state[15] = state[3]; + state[11] = t; + state[7] = u; + state[3] = v; // InvSubBytes - for (j = 0; j < 16; ++j) + for (j = 0; j < 16; ++j) { state[j] = inv_s[state[j]]; + } // AddRoundKey - for (j = 0, k = i * 16; j < 16; ++j, ++k) + for (j = 0, k = i * 16; j < 16; ++j, ++k) { state[j] ^= key[k]; + } // InvMixColumns for (j = 0; j < 16; j += 4) { var s0 = mix[state[j]], s1 = mix[state[j + 1]], - s2 = mix[state[j + 2]], s3 = mix[state[j + 3]]; + s2 = mix[state[j + 2]], s3 = mix[state[j + 3]]; t = (s0 ^ (s1 >>> 8) ^ (s1 << 24) ^ (s2 >>> 16) ^ (s2 << 16) ^ - (s3 >>> 24) ^ (s3 << 8)); + (s3 >>> 24) ^ (s3 << 8)); state[j] = (t >>> 24) & 0xFF; state[j + 1] = (t >> 16) & 0xFF; state[j + 2] = (t >> 8) & 0xFF; @@ -14229,12 +8561,24 @@ var AES128Cipher = (function AES128CipherClosure() { } } // InvShiftRows - t = state[13]; state[13] = state[9]; state[9] = state[5]; - state[5] = state[1]; state[1] = t; - t = state[14]; u = state[10]; state[14] = state[6]; - state[10] = state[2]; state[6] = t; state[2] = u; - t = state[15]; u = state[11]; v = state[7]; state[15] = state[3]; - state[11] = t; state[7] = u; state[3] = v; + t = state[13]; + state[13] = state[9]; + state[9] = state[5]; + state[5] = state[1]; + state[1] = t; + t = state[14]; + u = state[10]; + state[14] = state[6]; + state[10] = state[2]; + state[6] = t; + state[2] = u; + t = state[15]; + u = state[11]; + v = state[7]; + state[15] = state[3]; + state[11] = t; + state[7] = u; + state[3] = v; for (j = 0; j < 16; ++j) { // InvSubBytes state[j] = inv_s[state[j]]; @@ -14244,6 +8588,85 @@ var AES128Cipher = (function AES128CipherClosure() { return state; } + function encrypt128(input, key) { + var t, u, v, k; + var state = new Uint8Array(16); + state.set(input); + for (j = 0; j < 16; ++j) { + // AddRoundKey + state[j] ^= key[j]; + } + + for (i = 1; i < 10; i++) { + //SubBytes + for (j = 0; j < 16; ++j) { + state[j] = s[state[j]]; + } + //ShiftRows + v = state[1]; + state[1] = state[5]; + state[5] = state[9]; + state[9] = state[13]; + state[13] = v; + v = state[2]; + u = state[6]; + state[2] = state[10]; + state[6] = state[14]; + state[10] = v; + state[14] = u; + v = state[3]; + u = state[7]; + t = state[11]; + state[3] = state[15]; + state[7] = v; + state[11] = u; + state[15] = t; + //MixColumns + for (var j = 0; j < 16; j += 4) { + var s0 = state[j + 0], s1 = state[j + 1]; + var s2 = state[j + 2], s3 = state[j + 3]; + t = s0 ^ s1 ^ s2 ^ s3; + state[j + 0] ^= t ^ mixCol[s0 ^ s1]; + state[j + 1] ^= t ^ mixCol[s1 ^ s2]; + state[j + 2] ^= t ^ mixCol[s2 ^ s3]; + state[j + 3] ^= t ^ mixCol[s3 ^ s0]; + } + //AddRoundKey + for (j = 0, k = i * 16; j < 16; ++j, ++k) { + state[j] ^= key[k]; + } + } + + //SubBytes + for (j = 0; j < 16; ++j) { + state[j] = s[state[j]]; + } + //ShiftRows + v = state[1]; + state[1] = state[5]; + state[5] = state[9]; + state[9] = state[13]; + state[13] = v; + v = state[2]; + u = state[6]; + state[2] = state[10]; + state[6] = state[14]; + state[10] = v; + state[14] = u; + v = state[3]; + u = state[7]; + t = state[11]; + state[3] = state[15]; + state[7] = v; + state[11] = u; + state[15] = t; + //AddRoundKey + for (j = 0, k = 160; j < 16; ++j, ++k) { + state[j] ^= key[k]; + } + return state; + } + function AES128Cipher(key) { this.key = expandKey128(key); this.buffer = new Uint8Array(16); @@ -14257,13 +8680,15 @@ var AES128Cipher = (function AES128CipherClosure() { for (i = 0; i < sourceLength; ++i) { buffer[bufferLength] = data[i]; ++bufferLength; - if (bufferLength < 16) + if (bufferLength < 16) { continue; + } // buffer is full, decrypting var plain = decrypt128(buffer, this.key); // xor-ing the IV vector to get plain text - for (j = 0; j < 16; ++j) + for (j = 0; j < 16; ++j) { plain[j] ^= iv[j]; + } iv = buffer; result.push(plain); buffer = new Uint8Array(16); @@ -14281,12 +8706,23 @@ var AES128Cipher = (function AES128CipherClosure() { if (finalize) { // undo a padding that is described in RFC 2898 var lastBlock = result[result.length - 1]; - outputLength -= lastBlock[15]; - result[result.length - 1] = lastBlock.subarray(0, 16 - lastBlock[15]); + var psLen = lastBlock[15]; + if (psLen <= 16) { + for (i = 15, ii = 16 - psLen; i >= ii; --i) { + if (lastBlock[i] !== psLen) { + // Invalid padding, assume that the block has no padding. + psLen = 0; + break; + } + } + outputLength -= psLen; + result[result.length - 1] = lastBlock.subarray(0, 16 - psLen); + } } var output = new Uint8Array(outputLength); - for (i = 0, j = 0, ii = result.length; i < ii; ++i, j += 16) + for (i = 0, j = 0, ii = result.length; i < ii; ++i, j += 16) { output.set(result[i], j); + } return output; } @@ -14295,8 +8731,9 @@ var AES128Cipher = (function AES128CipherClosure() { var i, sourceLength = data.length; var buffer = this.buffer, bufferLength = this.bufferPosition; // waiting for IV values -- they are at the start of the stream - for (i = 0; bufferLength < 16 && i < sourceLength; ++i, ++bufferLength) + for (i = 0; bufferLength < 16 && i < sourceLength; ++i, ++bufferLength) { buffer[bufferLength] = data[i]; + } if (bufferLength < 16) { // need more data this.bufferLength = bufferLength; @@ -14308,21 +8745,707 @@ var AES128Cipher = (function AES128CipherClosure() { // starting decryption this.decryptBlock = decryptBlock2; return this.decryptBlock(data.subarray(16), finalize); + }, + encrypt: function AES128Cipher_encrypt(data, iv) { + var i, j, ii, sourceLength = data.length, + buffer = this.buffer, bufferLength = this.bufferPosition, + result = []; + if (!iv) { + iv = new Uint8Array(16); + } + for (i = 0; i < sourceLength; ++i) { + buffer[bufferLength] = data[i]; + ++bufferLength; + if (bufferLength < 16) { + continue; + } + for (j = 0; j < 16; ++j) { + buffer[j] ^= iv[j]; + } + + // buffer is full, encrypting + var cipher = encrypt128(buffer, this.key); + iv = cipher; + result.push(cipher); + buffer = new Uint8Array(16); + bufferLength = 0; + } + // saving incomplete buffer + this.buffer = buffer; + this.bufferLength = bufferLength; + this.iv = iv; + if (result.length === 0) { + return new Uint8Array([]); + } + // combining plain text blocks into one + var outputLength = 16 * result.length; + var output = new Uint8Array(outputLength); + for (i = 0, j = 0, ii = result.length; i < ii; ++i, j += 16) { + output.set(result[i], j); + } + return output; } }; return AES128Cipher; })(); +var AES256Cipher = (function AES256CipherClosure() { + var rcon = new Uint8Array([ + 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, + 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, + 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, + 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, + 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, + 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, + 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, + 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, + 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, + 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, + 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, + 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, + 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, + 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, + 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, + 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, + 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, + 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, + 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, + 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, + 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, + 0x74, 0xe8, 0xcb, 0x8d]); + + var s = new Uint8Array([ + 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, + 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, + 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, + 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, + 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, + 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, + 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, + 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, + 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, + 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, + 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, + 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, + 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, + 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, + 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d, + 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, + 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, + 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, + 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11, + 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, + 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, + 0xb0, 0x54, 0xbb, 0x16]); + + var inv_s = new Uint8Array([ + 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, + 0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, + 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32, + 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, + 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, + 0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, + 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50, + 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, + 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, + 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, + 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41, + 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, + 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, + 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, + 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b, + 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, + 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, + 0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, + 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d, + 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, + 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, + 0x55, 0x21, 0x0c, 0x7d]); + + var mixCol = new Uint8Array(256); + for (var i = 0; i < 256; i++) { + if (i < 128) { + mixCol[i] = i << 1; + } else { + mixCol[i] = (i << 1) ^ 0x1b; + } + } + var mix = new Uint32Array([ + 0x00000000, 0x0e090d0b, 0x1c121a16, 0x121b171d, 0x3824342c, 0x362d3927, + 0x24362e3a, 0x2a3f2331, 0x70486858, 0x7e416553, 0x6c5a724e, 0x62537f45, + 0x486c5c74, 0x4665517f, 0x547e4662, 0x5a774b69, 0xe090d0b0, 0xee99ddbb, + 0xfc82caa6, 0xf28bc7ad, 0xd8b4e49c, 0xd6bde997, 0xc4a6fe8a, 0xcaaff381, + 0x90d8b8e8, 0x9ed1b5e3, 0x8ccaa2fe, 0x82c3aff5, 0xa8fc8cc4, 0xa6f581cf, + 0xb4ee96d2, 0xbae79bd9, 0xdb3bbb7b, 0xd532b670, 0xc729a16d, 0xc920ac66, + 0xe31f8f57, 0xed16825c, 0xff0d9541, 0xf104984a, 0xab73d323, 0xa57ade28, + 0xb761c935, 0xb968c43e, 0x9357e70f, 0x9d5eea04, 0x8f45fd19, 0x814cf012, + 0x3bab6bcb, 0x35a266c0, 0x27b971dd, 0x29b07cd6, 0x038f5fe7, 0x0d8652ec, + 0x1f9d45f1, 0x119448fa, 0x4be30393, 0x45ea0e98, 0x57f11985, 0x59f8148e, + 0x73c737bf, 0x7dce3ab4, 0x6fd52da9, 0x61dc20a2, 0xad766df6, 0xa37f60fd, + 0xb16477e0, 0xbf6d7aeb, 0x955259da, 0x9b5b54d1, 0x894043cc, 0x87494ec7, + 0xdd3e05ae, 0xd33708a5, 0xc12c1fb8, 0xcf2512b3, 0xe51a3182, 0xeb133c89, + 0xf9082b94, 0xf701269f, 0x4de6bd46, 0x43efb04d, 0x51f4a750, 0x5ffdaa5b, + 0x75c2896a, 0x7bcb8461, 0x69d0937c, 0x67d99e77, 0x3daed51e, 0x33a7d815, + 0x21bccf08, 0x2fb5c203, 0x058ae132, 0x0b83ec39, 0x1998fb24, 0x1791f62f, + 0x764dd68d, 0x7844db86, 0x6a5fcc9b, 0x6456c190, 0x4e69e2a1, 0x4060efaa, + 0x527bf8b7, 0x5c72f5bc, 0x0605bed5, 0x080cb3de, 0x1a17a4c3, 0x141ea9c8, + 0x3e218af9, 0x302887f2, 0x223390ef, 0x2c3a9de4, 0x96dd063d, 0x98d40b36, + 0x8acf1c2b, 0x84c61120, 0xaef93211, 0xa0f03f1a, 0xb2eb2807, 0xbce2250c, + 0xe6956e65, 0xe89c636e, 0xfa877473, 0xf48e7978, 0xdeb15a49, 0xd0b85742, + 0xc2a3405f, 0xccaa4d54, 0x41ecdaf7, 0x4fe5d7fc, 0x5dfec0e1, 0x53f7cdea, + 0x79c8eedb, 0x77c1e3d0, 0x65daf4cd, 0x6bd3f9c6, 0x31a4b2af, 0x3fadbfa4, + 0x2db6a8b9, 0x23bfa5b2, 0x09808683, 0x07898b88, 0x15929c95, 0x1b9b919e, + 0xa17c0a47, 0xaf75074c, 0xbd6e1051, 0xb3671d5a, 0x99583e6b, 0x97513360, + 0x854a247d, 0x8b432976, 0xd134621f, 0xdf3d6f14, 0xcd267809, 0xc32f7502, + 0xe9105633, 0xe7195b38, 0xf5024c25, 0xfb0b412e, 0x9ad7618c, 0x94de6c87, + 0x86c57b9a, 0x88cc7691, 0xa2f355a0, 0xacfa58ab, 0xbee14fb6, 0xb0e842bd, + 0xea9f09d4, 0xe49604df, 0xf68d13c2, 0xf8841ec9, 0xd2bb3df8, 0xdcb230f3, + 0xcea927ee, 0xc0a02ae5, 0x7a47b13c, 0x744ebc37, 0x6655ab2a, 0x685ca621, + 0x42638510, 0x4c6a881b, 0x5e719f06, 0x5078920d, 0x0a0fd964, 0x0406d46f, + 0x161dc372, 0x1814ce79, 0x322bed48, 0x3c22e043, 0x2e39f75e, 0x2030fa55, + 0xec9ab701, 0xe293ba0a, 0xf088ad17, 0xfe81a01c, 0xd4be832d, 0xdab78e26, + 0xc8ac993b, 0xc6a59430, 0x9cd2df59, 0x92dbd252, 0x80c0c54f, 0x8ec9c844, + 0xa4f6eb75, 0xaaffe67e, 0xb8e4f163, 0xb6edfc68, 0x0c0a67b1, 0x02036aba, + 0x10187da7, 0x1e1170ac, 0x342e539d, 0x3a275e96, 0x283c498b, 0x26354480, + 0x7c420fe9, 0x724b02e2, 0x605015ff, 0x6e5918f4, 0x44663bc5, 0x4a6f36ce, + 0x587421d3, 0x567d2cd8, 0x37a10c7a, 0x39a80171, 0x2bb3166c, 0x25ba1b67, + 0x0f853856, 0x018c355d, 0x13972240, 0x1d9e2f4b, 0x47e96422, 0x49e06929, + 0x5bfb7e34, 0x55f2733f, 0x7fcd500e, 0x71c45d05, 0x63df4a18, 0x6dd64713, + 0xd731dcca, 0xd938d1c1, 0xcb23c6dc, 0xc52acbd7, 0xef15e8e6, 0xe11ce5ed, + 0xf307f2f0, 0xfd0efffb, 0xa779b492, 0xa970b999, 0xbb6bae84, 0xb562a38f, + 0x9f5d80be, 0x91548db5, 0x834f9aa8, 0x8d4697a3]); + + function expandKey256(cipherKey) { + var b = 240, result = new Uint8Array(b); + var r = 1; + + result.set(cipherKey); + for (var j = 32, i = 1; j < b; ++i) { + if (j % 32 === 16) { + t1 = s[t1]; + t2 = s[t2]; + t3 = s[t3]; + t4 = s[t4]; + } else if (j % 32 === 0) { + // RotWord + var t1 = result[j - 3], t2 = result[j - 2], + t3 = result[j - 1], t4 = result[j - 4]; + // SubWord + t1 = s[t1]; + t2 = s[t2]; + t3 = s[t3]; + t4 = s[t4]; + // Rcon + t1 = t1 ^ r; + if ((r <<= 1) >= 256) { + r = (r ^ 0x1b) & 0xFF; + } + } + + for (var n = 0; n < 4; ++n) { + result[j] = (t1 ^= result[j - 32]); + j++; + result[j] = (t2 ^= result[j - 32]); + j++; + result[j] = (t3 ^= result[j - 32]); + j++; + result[j] = (t4 ^= result[j - 32]); + j++; + } + } + return result; + } + + function decrypt256(input, key) { + var state = new Uint8Array(16); + state.set(input); + var i, j, k; + var t, u, v; + // AddRoundKey + for (j = 0, k = 224; j < 16; ++j, ++k) { + state[j] ^= key[k]; + } + for (i = 13; i >= 1; --i) { + // InvShiftRows + t = state[13]; + state[13] = state[9]; + state[9] = state[5]; + state[5] = state[1]; + state[1] = t; + t = state[14]; + u = state[10]; + state[14] = state[6]; + state[10] = state[2]; + state[6] = t; + state[2] = u; + t = state[15]; + u = state[11]; + v = state[7]; + state[15] = state[3]; + state[11] = t; + state[7] = u; + state[3] = v; + // InvSubBytes + for (j = 0; j < 16; ++j) { + state[j] = inv_s[state[j]]; + } + // AddRoundKey + for (j = 0, k = i * 16; j < 16; ++j, ++k) { + state[j] ^= key[k]; + } + // InvMixColumns + for (j = 0; j < 16; j += 4) { + var s0 = mix[state[j]], s1 = mix[state[j + 1]], + s2 = mix[state[j + 2]], s3 = mix[state[j + 3]]; + t = (s0 ^ (s1 >>> 8) ^ (s1 << 24) ^ (s2 >>> 16) ^ (s2 << 16) ^ + (s3 >>> 24) ^ (s3 << 8)); + state[j] = (t >>> 24) & 0xFF; + state[j + 1] = (t >> 16) & 0xFF; + state[j + 2] = (t >> 8) & 0xFF; + state[j + 3] = t & 0xFF; + } + } + // InvShiftRows + t = state[13]; + state[13] = state[9]; + state[9] = state[5]; + state[5] = state[1]; + state[1] = t; + t = state[14]; + u = state[10]; + state[14] = state[6]; + state[10] = state[2]; + state[6] = t; + state[2] = u; + t = state[15]; + u = state[11]; + v = state[7]; + state[15] = state[3]; + state[11] = t; + state[7] = u; + state[3] = v; + for (j = 0; j < 16; ++j) { + // InvSubBytes + state[j] = inv_s[state[j]]; + // AddRoundKey + state[j] ^= key[j]; + } + return state; + } + + function encrypt256(input, key) { + var t, u, v, k; + var state = new Uint8Array(16); + state.set(input); + for (j = 0; j < 16; ++j) { + // AddRoundKey + state[j] ^= key[j]; + } + + for (i = 1; i < 14; i++) { + //SubBytes + for (j = 0; j < 16; ++j) { + state[j] = s[state[j]]; + } + //ShiftRows + v = state[1]; + state[1] = state[5]; + state[5] = state[9]; + state[9] = state[13]; + state[13] = v; + v = state[2]; + u = state[6]; + state[2] = state[10]; + state[6] = state[14]; + state[10] = v; + state[14] = u; + v = state[3]; + u = state[7]; + t = state[11]; + state[3] = state[15]; + state[7] = v; + state[11] = u; + state[15] = t; + //MixColumns + for (var j = 0; j < 16; j += 4) { + var s0 = state[j + 0], s1 = state[j + 1]; + var s2 = state[j + 2], s3 = state[j + 3]; + t = s0 ^ s1 ^ s2 ^ s3; + state[j + 0] ^= t ^ mixCol[s0 ^ s1]; + state[j + 1] ^= t ^ mixCol[s1 ^ s2]; + state[j + 2] ^= t ^ mixCol[s2 ^ s3]; + state[j + 3] ^= t ^ mixCol[s3 ^ s0]; + } + //AddRoundKey + for (j = 0, k = i * 16; j < 16; ++j, ++k) { + state[j] ^= key[k]; + } + } + + //SubBytes + for (j = 0; j < 16; ++j) { + state[j] = s[state[j]]; + } + //ShiftRows + v = state[1]; + state[1] = state[5]; + state[5] = state[9]; + state[9] = state[13]; + state[13] = v; + v = state[2]; + u = state[6]; + state[2] = state[10]; + state[6] = state[14]; + state[10] = v; + state[14] = u; + v = state[3]; + u = state[7]; + t = state[11]; + state[3] = state[15]; + state[7] = v; + state[11] = u; + state[15] = t; + //AddRoundKey + for (j = 0, k = 224; j < 16; ++j, ++k) { + state[j] ^= key[k]; + } + + return state; + + } + + function AES256Cipher(key) { + this.key = expandKey256(key); + this.buffer = new Uint8Array(16); + this.bufferPosition = 0; + } + + function decryptBlock2(data, finalize) { + var i, j, ii, sourceLength = data.length, + buffer = this.buffer, bufferLength = this.bufferPosition, + result = [], iv = this.iv; + + for (i = 0; i < sourceLength; ++i) { + buffer[bufferLength] = data[i]; + ++bufferLength; + if (bufferLength < 16) { + continue; + } + // buffer is full, decrypting + var plain = decrypt256(buffer, this.key); + // xor-ing the IV vector to get plain text + for (j = 0; j < 16; ++j) { + plain[j] ^= iv[j]; + } + iv = buffer; + result.push(plain); + buffer = new Uint8Array(16); + bufferLength = 0; + } + // saving incomplete buffer + this.buffer = buffer; + this.bufferLength = bufferLength; + this.iv = iv; + if (result.length === 0) { + return new Uint8Array([]); + } + // combining plain text blocks into one + var outputLength = 16 * result.length; + if (finalize) { + // undo a padding that is described in RFC 2898 + var lastBlock = result[result.length - 1]; + var psLen = lastBlock[15]; + if (psLen <= 16) { + for (i = 15, ii = 16 - psLen; i >= ii; --i) { + if (lastBlock[i] !== psLen) { + // Invalid padding, assume that the block has no padding. + psLen = 0; + break; + } + } + outputLength -= psLen; + result[result.length - 1] = lastBlock.subarray(0, 16 - psLen); + } + } + var output = new Uint8Array(outputLength); + for (i = 0, j = 0, ii = result.length; i < ii; ++i, j += 16) { + output.set(result[i], j); + } + return output; + + } + + AES256Cipher.prototype = { + decryptBlock: function AES256Cipher_decryptBlock(data, finalize, iv) { + var i, sourceLength = data.length; + var buffer = this.buffer, bufferLength = this.bufferPosition; + // if not supplied an IV wait for IV values + // they are at the start of the stream + if (iv) { + this.iv = iv; + } else { + for (i = 0; bufferLength < 16 && + i < sourceLength; ++i, ++bufferLength) { + buffer[bufferLength] = data[i]; + } + if (bufferLength < 16) { + //need more data + this.bufferLength = bufferLength; + return new Uint8Array([]); + } + this.iv = buffer; + data = data.subarray(16); + } + this.buffer = new Uint8Array(16); + this.bufferLength = 0; + // starting decryption + this.decryptBlock = decryptBlock2; + return this.decryptBlock(data, finalize); + }, + encrypt: function AES256Cipher_encrypt(data, iv) { + var i, j, ii, sourceLength = data.length, + buffer = this.buffer, bufferLength = this.bufferPosition, + result = []; + if (!iv) { + iv = new Uint8Array(16); + } + for (i = 0; i < sourceLength; ++i) { + buffer[bufferLength] = data[i]; + ++bufferLength; + if (bufferLength < 16) { + continue; + } + for (j = 0; j < 16; ++j) { + buffer[j] ^= iv[j]; + } + + // buffer is full, encrypting + var cipher = encrypt256(buffer, this.key); + this.iv = cipher; + result.push(cipher); + buffer = new Uint8Array(16); + bufferLength = 0; + } + // saving incomplete buffer + this.buffer = buffer; + this.bufferLength = bufferLength; + this.iv = iv; + if (result.length === 0) { + return new Uint8Array([]); + } + // combining plain text blocks into one + var outputLength = 16 * result.length; + var output = new Uint8Array(outputLength); + for (i = 0, j = 0, ii = result.length; i < ii; ++i, j += 16) { + output.set(result[i], j); + } + return output; + } + }; + + return AES256Cipher; +})(); + +var PDF17 = (function PDF17Closure() { + + function compareByteArrays(array1, array2) { + if (array1.length !== array2.length) { + return false; + } + for (var i = 0; i < array1.length; i++) { + if (array1[i] !== array2[i]) { + return false; + } + } + return true; + } + + function PDF17() { + } + + PDF17.prototype = { + checkOwnerPassword: function PDF17_checkOwnerPassword(password, + ownerValidationSalt, + userBytes, + ownerPassword) { + var hashData = new Uint8Array(password.length + 56); + hashData.set(password, 0); + hashData.set(ownerValidationSalt, password.length); + hashData.set(userBytes, password.length + ownerValidationSalt.length); + var result = calculateSHA256(hashData, 0, hashData.length); + return compareByteArrays(result, ownerPassword); + }, + checkUserPassword: function PDF17_checkUserPassword(password, + userValidationSalt, + userPassword) { + var hashData = new Uint8Array(password.length + 8); + hashData.set(password, 0); + hashData.set(userValidationSalt, password.length); + var result = calculateSHA256(hashData, 0, hashData.length); + return compareByteArrays(result, userPassword); + }, + getOwnerKey: function PDF17_getOwnerKey(password, ownerKeySalt, userBytes, + ownerEncryption) { + var hashData = new Uint8Array(password.length + 56); + hashData.set(password, 0); + hashData.set(ownerKeySalt, password.length); + hashData.set(userBytes, password.length + ownerKeySalt.length); + var key = calculateSHA256(hashData, 0, hashData.length); + var cipher = new AES256Cipher(key); + return cipher.decryptBlock(ownerEncryption, + false, + new Uint8Array(16)); + + }, + getUserKey: function PDF17_getUserKey(password, userKeySalt, + userEncryption) { + var hashData = new Uint8Array(password.length + 8); + hashData.set(password, 0); + hashData.set(userKeySalt, password.length); + //key is the decryption key for the UE string + var key = calculateSHA256(hashData, 0, hashData.length); + var cipher = new AES256Cipher(key); + return cipher.decryptBlock(userEncryption, + false, + new Uint8Array(16)); + } + }; + return PDF17; +})(); + +var PDF20 = (function PDF20Closure() { + + function concatArrays(array1, array2) { + var t = new Uint8Array(array1.length + array2.length); + t.set(array1, 0); + t.set(array2, array1.length); + return t; + } + + function calculatePDF20Hash(password, input, userBytes) { + //This refers to Algorithm 2.B as defined in ISO 32000-2 + var k = calculateSHA256(input, 0, input.length).subarray(0, 32); + var e = [0]; + var i = 0; + while (i < 64 || e[e.length - 1] > i - 32) { + var arrayLength = password.length + k.length + userBytes.length; + + var k1 = new Uint8Array(arrayLength * 64); + var array = concatArrays(password, k); + array = concatArrays(array, userBytes); + for (var j = 0, pos = 0; j < 64; j++, pos += arrayLength) { + k1.set(array, pos); + } + //AES128 CBC NO PADDING with + //first 16 bytes of k as the key and the second 16 as the iv. + var cipher = new AES128Cipher(k.subarray(0, 16)); + e = cipher.encrypt(k1, k.subarray(16, 32)); + //Now we have to take the first 16 bytes of an unsigned + //big endian integer... and compute the remainder + //modulo 3.... That is a fairly large number and + //JavaScript isn't going to handle that well... + //So we're using a trick that allows us to perform + //modulo math byte by byte + var remainder = 0; + for (var z = 0; z < 16; z++) { + remainder *= (256 % 3); + remainder %= 3; + remainder += ((e[z] >>> 0) % 3); + remainder %= 3; + } + if (remainder === 0) { + k = calculateSHA256(e, 0, e.length); + } + else if (remainder === 1) { + k = calculateSHA384(e, 0, e.length); + } + else if (remainder === 2) { + k = calculateSHA512(e, 0, e.length); + } + i++; + } + return k.subarray(0, 32); + } + + function PDF20() { + } + + function compareByteArrays(array1, array2) { + if (array1.length !== array2.length) { + return false; + } + for (var i = 0; i < array1.length; i++) { + if (array1[i] !== array2[i]) { + return false; + } + } + return true; + } + + PDF20.prototype = { + hash: function PDF20_hash(password, concatBytes, userBytes) { + return calculatePDF20Hash(password, concatBytes, userBytes); + }, + checkOwnerPassword: function PDF20_checkOwnerPassword(password, + ownerValidationSalt, + userBytes, + ownerPassword) { + var hashData = new Uint8Array(password.length + 56); + hashData.set(password, 0); + hashData.set(ownerValidationSalt, password.length); + hashData.set(userBytes, password.length + ownerValidationSalt.length); + var result = calculatePDF20Hash(password, hashData, userBytes); + return compareByteArrays(result, ownerPassword); + }, + checkUserPassword: function PDF20_checkUserPassword(password, + userValidationSalt, + userPassword) { + var hashData = new Uint8Array(password.length + 8); + hashData.set(password, 0); + hashData.set(userValidationSalt, password.length); + var result = calculatePDF20Hash(password, hashData, []); + return compareByteArrays(result, userPassword); + }, + getOwnerKey: function PDF20_getOwnerKey(password, ownerKeySalt, userBytes, + ownerEncryption) { + var hashData = new Uint8Array(password.length + 56); + hashData.set(password, 0); + hashData.set(ownerKeySalt, password.length); + hashData.set(userBytes, password.length + ownerKeySalt.length); + var key = calculatePDF20Hash(password, hashData, userBytes); + var cipher = new AES256Cipher(key); + return cipher.decryptBlock(ownerEncryption, + false, + new Uint8Array(16)); + + }, + getUserKey: function PDF20_getUserKey(password, userKeySalt, + userEncryption) { + var hashData = new Uint8Array(password.length + 8); + hashData.set(password, 0); + hashData.set(userKeySalt, password.length); + //key is the decryption key for the UE string + var key = calculatePDF20Hash(password, hashData, []); + var cipher = new AES256Cipher(key); + return cipher.decryptBlock(userEncryption, + false, + new Uint8Array(16)); + } + }; + return PDF20; +})(); + var CipherTransform = (function CipherTransformClosure() { function CipherTransform(stringCipherConstructor, streamCipherConstructor) { this.stringCipherConstructor = stringCipherConstructor; this.streamCipherConstructor = streamCipherConstructor; } + CipherTransform.prototype = { - createStream: function CipherTransform_createStream(stream) { + createStream: function CipherTransform_createStream(stream, length) { var cipher = new this.streamCipherConstructor(); - return new DecryptStream(stream, + return new DecryptStream(stream, length, function cipherTransformDecryptStream(data, finalize) { return cipher.decryptBlock(data, finalize); } @@ -14345,28 +9468,63 @@ var CipherTransformFactory = (function CipherTransformFactoryClosure() { 0x2E, 0x2E, 0x00, 0xB6, 0xD0, 0x68, 0x3E, 0x80, 0x2F, 0x0C, 0xA9, 0xFE, 0x64, 0x53, 0x69, 0x7A]); + function createEncryptionKey20(revision, password, ownerPassword, + ownerValidationSalt, ownerKeySalt, uBytes, + userPassword, userValidationSalt, userKeySalt, + ownerEncryption, userEncryption, perms) { + if (password) { + var passwordLength = Math.min(127, password.length); + password = password.subarray(0, passwordLength); + } else { + password = []; + } + var pdfAlgorithm; + if (revision === 6) { + pdfAlgorithm = new PDF20(); + } else { + pdfAlgorithm = new PDF17(); + } + + if (pdfAlgorithm) { + if (pdfAlgorithm.checkUserPassword(password, userValidationSalt, + userPassword)) { + return pdfAlgorithm.getUserKey(password, userKeySalt, userEncryption); + } else if (pdfAlgorithm.checkOwnerPassword(password, ownerValidationSalt, + uBytes, + ownerPassword)) { + return pdfAlgorithm.getOwnerKey(password, ownerKeySalt, uBytes, + ownerEncryption); + } + } + + return null; + } + function prepareKeyData(fileId, password, ownerPassword, userPassword, flags, revision, keyLength, encryptMetadata) { var hashDataSize = 40 + ownerPassword.length + fileId.length; var hashData = new Uint8Array(hashDataSize), i = 0, j, n; if (password) { n = Math.min(32, password.length); - for (; i < n; ++i) + for (; i < n; ++i) { hashData[i] = password[i]; + } } j = 0; while (i < 32) { hashData[i++] = defaultPasswordBytes[j++]; } // as now the padded password in the hashData[0..i] - for (j = 0, n = ownerPassword.length; j < n; ++j) + for (j = 0, n = ownerPassword.length; j < n; ++j) { hashData[i++] = ownerPassword[j]; + } hashData[i++] = flags & 0xFF; hashData[i++] = (flags >> 8) & 0xFF; hashData[i++] = (flags >> 16) & 0xFF; hashData[i++] = (flags >>> 24) & 0xFF; - for (j = 0, n = fileId.length; j < n; ++j) + for (j = 0, n = fileId.length; j < n; ++j) { hashData[i++] = fileId[j]; + } if (revision >= 4 && !encryptMetadata) { hashData[i++] = 0xFF; hashData[i++] = 0xFF; @@ -14377,46 +9535,53 @@ var CipherTransformFactory = (function CipherTransformFactoryClosure() { var keyLengthInBytes = keyLength >> 3; if (revision >= 3) { for (j = 0; j < 50; ++j) { - hash = calculateMD5(hash, 0, keyLengthInBytes); + hash = calculateMD5(hash, 0, keyLengthInBytes); } } var encryptionKey = hash.subarray(0, keyLengthInBytes); var cipher, checkData; if (revision >= 3) { - for (i = 0; i < 32; ++i) + for (i = 0; i < 32; ++i) { hashData[i] = defaultPasswordBytes[i]; - for (j = 0, n = fileId.length; j < n; ++j) + } + for (j = 0, n = fileId.length; j < n; ++j) { hashData[i++] = fileId[j]; + } cipher = new ARCFourCipher(encryptionKey); - var checkData = cipher.encryptBlock(calculateMD5(hashData, 0, i)); + checkData = cipher.encryptBlock(calculateMD5(hashData, 0, i)); n = encryptionKey.length; var derivedKey = new Uint8Array(n), k; for (j = 1; j <= 19; ++j) { - for (k = 0; k < n; ++k) + for (k = 0; k < n; ++k) { derivedKey[k] = encryptionKey[k] ^ j; + } cipher = new ARCFourCipher(derivedKey); checkData = cipher.encryptBlock(checkData); } for (j = 0, n = checkData.length; j < n; ++j) { - if (userPassword[j] != checkData[j]) + if (userPassword[j] !== checkData[j]) { return null; + } } } else { cipher = new ARCFourCipher(encryptionKey); checkData = cipher.encryptBlock(defaultPasswordBytes); for (j = 0, n = checkData.length; j < n; ++j) { - if (userPassword[j] != checkData[j]) + if (userPassword[j] !== checkData[j]) { return null; + } } } return encryptionKey; } + function decodeUserPassword(password, ownerPassword, revision, keyLength) { var hashData = new Uint8Array(32), i = 0, j, n; n = Math.min(32, password.length); - for (; i < n; ++i) + for (; i < n; ++i) { hashData[i] = password[i]; + } j = 0; while (i < 32) { hashData[i++] = defaultPasswordBytes[j++]; @@ -14425,7 +9590,7 @@ var CipherTransformFactory = (function CipherTransformFactoryClosure() { var keyLengthInBytes = keyLength >> 3; if (revision >= 3) { for (j = 0; j < 50; ++j) { - hash = calculateMD5(hash, 0, hash.length); + hash = calculateMD5(hash, 0, hash.length); } } @@ -14434,8 +9599,9 @@ var CipherTransformFactory = (function CipherTransformFactoryClosure() { userPassword = ownerPassword; var derivedKey = new Uint8Array(keyLengthInBytes), k; for (j = 19; j >= 0; j--) { - for (k = 0; k < keyLengthInBytes; ++k) + for (k = 0; k < keyLengthInBytes; ++k) { derivedKey[k] = hash[k] ^ j; + } cipher = new ARCFourCipher(derivedKey); userPassword = cipher.encryptBlock(userPassword); } @@ -14446,39 +9612,66 @@ var CipherTransformFactory = (function CipherTransformFactoryClosure() { return userPassword; } - var identityName = new Name('Identity'); + var identityName = Name.get('Identity'); function CipherTransformFactory(dict, fileId, password) { var filter = dict.get('Filter'); - if (!isName(filter) || filter.name != 'Standard') + if (!isName(filter) || filter.name !== 'Standard') { error('unknown encryption method'); + } this.dict = dict; var algorithm = dict.get('V'); if (!isInt(algorithm) || - (algorithm != 1 && algorithm != 2 && algorithm != 4)) + (algorithm !== 1 && algorithm !== 2 && algorithm !== 4 && + algorithm !== 5)) { error('unsupported encryption algorithm'); + } this.algorithm = algorithm; var keyLength = dict.get('Length') || 40; if (!isInt(keyLength) || - keyLength < 40 || (keyLength % 8) !== 0) + keyLength < 40 || (keyLength % 8) !== 0) { error('invalid key length'); + } + // prepare keys var ownerPassword = stringToBytes(dict.get('O')).subarray(0, 32); var userPassword = stringToBytes(dict.get('U')).subarray(0, 32); var flags = dict.get('P'); var revision = dict.get('R'); - var encryptMetadata = algorithm == 4 && // meaningful when V is 4 - dict.get('EncryptMetadata') !== false; // makes true as default value + // meaningful when V is 4 or 5 + var encryptMetadata = ((algorithm === 4 || algorithm === 5) && + dict.get('EncryptMetadata') !== false); this.encryptMetadata = encryptMetadata; var fileIdBytes = stringToBytes(fileId); var passwordBytes; - if (password) + if (password) { passwordBytes = stringToBytes(password); + } - var encryptionKey = prepareKeyData(fileIdBytes, passwordBytes, - ownerPassword, userPassword, flags, - revision, keyLength, encryptMetadata); + var encryptionKey; + if (algorithm !== 5) { + encryptionKey = prepareKeyData(fileIdBytes, passwordBytes, + ownerPassword, userPassword, flags, + revision, keyLength, encryptMetadata); + } + else { + var ownerValidationSalt = stringToBytes(dict.get('O')).subarray(32, 40); + var ownerKeySalt = stringToBytes(dict.get('O')).subarray(40, 48); + var uBytes = stringToBytes(dict.get('U')).subarray(0, 48); + var userValidationSalt = stringToBytes(dict.get('U')).subarray(32, 40); + var userKeySalt = stringToBytes(dict.get('U')).subarray(40, 48); + var ownerEncryption = stringToBytes(dict.get('OE')); + var userEncryption = stringToBytes(dict.get('UE')); + var perms = stringToBytes(dict.get('Perms')); + encryptionKey = + createEncryptionKey20(revision, passwordBytes, + ownerPassword, ownerValidationSalt, + ownerKeySalt, uBytes, + userPassword, userValidationSalt, + userKeySalt, ownerEncryption, + userEncryption, perms); + } if (!encryptionKey && !password) { throw new PasswordException('No password given', PasswordResponses.NEED_PASSWORD); @@ -14491,13 +9684,14 @@ var CipherTransformFactory = (function CipherTransformFactoryClosure() { revision, keyLength, encryptMetadata); } - if (!encryptionKey) + if (!encryptionKey) { throw new PasswordException('Incorrect Password', PasswordResponses.INCORRECT_PASSWORD); + } this.encryptionKey = encryptionKey; - if (algorithm == 4) { + if (algorithm >= 4) { this.cf = dict.get('CF'); this.stmf = dict.get('StmF') || identityName; this.strf = dict.get('StrF') || identityName; @@ -14507,8 +9701,9 @@ var CipherTransformFactory = (function CipherTransformFactoryClosure() { function buildObjectKey(num, gen, encryptionKey, isAes) { var key = new Uint8Array(encryptionKey.length + 9), i, n; - for (i = 0, n = encryptionKey.length; i < n; ++i) + for (i = 0, n = encryptionKey.length; i < n; ++i) { key[i] = encryptionKey[i]; + } key[i++] = num & 0xFF; key[i++] = (num >> 8) & 0xFF; key[i++] = (num >> 16) & 0xFF; @@ -14527,23 +9722,27 @@ var CipherTransformFactory = (function CipherTransformFactoryClosure() { function buildCipherConstructor(cf, name, num, gen, key) { var cryptFilter = cf.get(name.name); var cfm; - if (cryptFilter !== null && cryptFilter !== undefined) + if (cryptFilter !== null && cryptFilter !== undefined) { cfm = cryptFilter.get('CFM'); - if (!cfm || cfm.name == 'None') { + } + if (!cfm || cfm.name === 'None') { return function cipherTransformFactoryBuildCipherConstructorNone() { return new NullCipher(); }; } - if ('V2' == cfm.name) { + if ('V2' === cfm.name) { return function cipherTransformFactoryBuildCipherConstructorV2() { - return new ARCFourCipher( - buildObjectKey(num, gen, key, false)); + return new ARCFourCipher(buildObjectKey(num, gen, key, false)); }; } - if ('AESV2' == cfm.name) { + if ('AESV2' === cfm.name) { return function cipherTransformFactoryBuildCipherConstructorAESV2() { - return new AES128Cipher( - buildObjectKey(num, gen, key, true)); + return new AES128Cipher(buildObjectKey(num, gen, key, true)); + }; + } + if ('AESV3' === cfm.name) { + return function cipherTransformFactoryBuildCipherConstructorAESV3() { + return new AES256Cipher(key); }; } error('Unknown crypto method'); @@ -14552,12 +9751,12 @@ var CipherTransformFactory = (function CipherTransformFactoryClosure() { CipherTransformFactory.prototype = { createCipherTransform: function CipherTransformFactory_createCipherTransform(num, gen) { - if (this.algorithm == 4) { + if (this.algorithm === 4 || this.algorithm === 5) { return new CipherTransform( buildCipherConstructor(this.cf, this.stmf, - num, gen, this.encryptionKey), + num, gen, this.encryptionKey), buildCipherConstructor(this.cf, this.strf, - num, gen, this.encryptionKey)); + num, gen, this.encryptionKey)); } // algorithms 1 and 2 var key = buildObjectKey(num, gen, this.encryptionKey, false); @@ -14571,14 +9770,785 @@ var CipherTransformFactory = (function CipherTransformFactoryClosure() { return CipherTransformFactory; })(); +var PatternType = { + FUNCTION_BASED: 1, + AXIAL: 2, + RADIAL: 3, + FREE_FORM_MESH: 4, + LATTICE_FORM_MESH: 5, + COONS_PATCH_MESH: 6, + TENSOR_PATCH_MESH: 7 +}; + +var Pattern = (function PatternClosure() { + // Constructor should define this.getPattern + function Pattern() { + error('should not call Pattern constructor'); + } + + Pattern.prototype = { + // Input: current Canvas context + // Output: the appropriate fillStyle or strokeStyle + getPattern: function Pattern_getPattern(ctx) { + error('Should not call Pattern.getStyle: ' + ctx); + } + }; + + Pattern.parseShading = function Pattern_parseShading(shading, matrix, xref, + res) { + + var dict = isStream(shading) ? shading.dict : shading; + var type = dict.get('ShadingType'); + + switch (type) { + case PatternType.AXIAL: + case PatternType.RADIAL: + // Both radial and axial shadings are handled by RadialAxial shading. + return new Shadings.RadialAxial(dict, matrix, xref, res); + case PatternType.FREE_FORM_MESH: + case PatternType.LATTICE_FORM_MESH: + case PatternType.COONS_PATCH_MESH: + case PatternType.TENSOR_PATCH_MESH: + return new Shadings.Mesh(shading, matrix, xref, res); + default: + UnsupportedManager.notify(UNSUPPORTED_FEATURES.shadingPattern); + return new Shadings.Dummy(); + } + }; + return Pattern; +})(); + +var Shadings = {}; + +// A small number to offset the first/last color stops so we can insert ones to +// support extend. Number.MIN_VALUE appears to be too small and breaks the +// extend. 1e-7 works in FF but chrome seems to use an even smaller sized number +// internally so we have to go bigger. +Shadings.SMALL_NUMBER = 1e-2; + +// Radial and axial shading have very similar implementations +// If needed, the implementations can be broken into two classes +Shadings.RadialAxial = (function RadialAxialClosure() { + function RadialAxial(dict, matrix, xref, res) { + this.matrix = matrix; + this.coordsArr = dict.get('Coords'); + this.shadingType = dict.get('ShadingType'); + this.type = 'Pattern'; + var cs = dict.get('ColorSpace', 'CS'); + cs = ColorSpace.parse(cs, xref, res); + this.cs = cs; + + var t0 = 0.0, t1 = 1.0; + if (dict.has('Domain')) { + var domainArr = dict.get('Domain'); + t0 = domainArr[0]; + t1 = domainArr[1]; + } + + var extendStart = false, extendEnd = false; + if (dict.has('Extend')) { + var extendArr = dict.get('Extend'); + extendStart = extendArr[0]; + extendEnd = extendArr[1]; + } + + if (this.shadingType === PatternType.RADIAL && + (!extendStart || !extendEnd)) { + // Radial gradient only currently works if either circle is fully within + // the other circle. + var x1 = this.coordsArr[0]; + var y1 = this.coordsArr[1]; + var r1 = this.coordsArr[2]; + var x2 = this.coordsArr[3]; + var y2 = this.coordsArr[4]; + var r2 = this.coordsArr[5]; + var distance = Math.sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2)); + if (r1 <= r2 + distance && + r2 <= r1 + distance) { + warn('Unsupported radial gradient.'); + } + } + + this.extendStart = extendStart; + this.extendEnd = extendEnd; + + var fnObj = dict.get('Function'); + var fn = PDFFunction.parseArray(xref, fnObj); + + // 10 samples seems good enough for now, but probably won't work + // if there are sharp color changes. Ideally, we would implement + // the spec faithfully and add lossless optimizations. + var diff = t1 - t0; + var step = diff / 10; + + var colorStops = this.colorStops = []; + + // Protect against bad domains so we don't end up in an infinte loop below. + if (t0 >= t1 || step <= 0) { + // Acrobat doesn't seem to handle these cases so we'll ignore for + // now. + info('Bad shading domain.'); + return; + } + + var color = new Float32Array(cs.numComps), ratio = new Float32Array(1); + var rgbColor; + for (var i = t0; i <= t1; i += step) { + ratio[0] = i; + fn(ratio, 0, color, 0); + rgbColor = cs.getRgb(color, 0); + var cssColor = Util.makeCssRgb(rgbColor); + colorStops.push([(i - t0) / diff, cssColor]); + } + + var background = 'transparent'; + if (dict.has('Background')) { + rgbColor = cs.getRgb(dict.get('Background'), 0); + background = Util.makeCssRgb(rgbColor); + } + + if (!extendStart) { + // Insert a color stop at the front and offset the first real color stop + // so it doesn't conflict with the one we insert. + colorStops.unshift([0, background]); + colorStops[1][0] += Shadings.SMALL_NUMBER; + } + if (!extendEnd) { + // Same idea as above in extendStart but for the end. + colorStops[colorStops.length - 1][0] -= Shadings.SMALL_NUMBER; + colorStops.push([1, background]); + } + + this.colorStops = colorStops; + } + + RadialAxial.prototype = { + getIR: function RadialAxial_getIR() { + var coordsArr = this.coordsArr; + var shadingType = this.shadingType; + var type, p0, p1, r0, r1; + if (shadingType === PatternType.AXIAL) { + p0 = [coordsArr[0], coordsArr[1]]; + p1 = [coordsArr[2], coordsArr[3]]; + r0 = null; + r1 = null; + type = 'axial'; + } else if (shadingType === PatternType.RADIAL) { + p0 = [coordsArr[0], coordsArr[1]]; + p1 = [coordsArr[3], coordsArr[4]]; + r0 = coordsArr[2]; + r1 = coordsArr[5]; + type = 'radial'; + } else { + error('getPattern type unknown: ' + shadingType); + } + + var matrix = this.matrix; + if (matrix) { + p0 = Util.applyTransform(p0, matrix); + p1 = Util.applyTransform(p1, matrix); + } + + return ['RadialAxial', type, this.colorStops, p0, p1, r0, r1]; + } + }; + + return RadialAxial; +})(); + +// All mesh shading. For now, they will be presented as set of the triangles +// to be drawn on the canvas and rgb color for each vertex. +Shadings.Mesh = (function MeshClosure() { + function MeshStreamReader(stream, context) { + this.stream = stream; + this.context = context; + this.buffer = 0; + this.bufferLength = 0; + + var numComps = context.numComps; + this.tmpCompsBuf = new Float32Array(numComps); + var csNumComps = context.colorSpace; + this.tmpCsCompsBuf = context.colorFn ? new Float32Array(csNumComps) : + this.tmpCompsBuf; + } + MeshStreamReader.prototype = { + get hasData() { + if (this.stream.end) { + return this.stream.pos < this.stream.end; + } + if (this.bufferLength > 0) { + return true; + } + var nextByte = this.stream.getByte(); + if (nextByte < 0) { + return false; + } + this.buffer = nextByte; + this.bufferLength = 8; + return true; + }, + readBits: function MeshStreamReader_readBits(n) { + var buffer = this.buffer; + var bufferLength = this.bufferLength; + if (n === 32) { + if (bufferLength === 0) { + return ((this.stream.getByte() << 24) | + (this.stream.getByte() << 16) | (this.stream.getByte() << 8) | + this.stream.getByte()) >>> 0; + } + buffer = (buffer << 24) | (this.stream.getByte() << 16) | + (this.stream.getByte() << 8) | this.stream.getByte(); + var nextByte = this.stream.getByte(); + this.buffer = nextByte & ((1 << bufferLength) - 1); + return ((buffer << (8 - bufferLength)) | + ((nextByte & 0xFF) >> bufferLength)) >>> 0; + } + if (n === 8 && bufferLength === 0) { + return this.stream.getByte(); + } + while (bufferLength < n) { + buffer = (buffer << 8) | this.stream.getByte(); + bufferLength += 8; + } + bufferLength -= n; + this.bufferLength = bufferLength; + this.buffer = buffer & ((1 << bufferLength) - 1); + return buffer >> bufferLength; + }, + align: function MeshStreamReader_align() { + this.buffer = 0; + this.bufferLength = 0; + }, + readFlag: function MeshStreamReader_readFlag() { + return this.readBits(this.context.bitsPerFlag); + }, + readCoordinate: function MeshStreamReader_readCoordinate() { + var bitsPerCoordinate = this.context.bitsPerCoordinate; + var xi = this.readBits(bitsPerCoordinate); + var yi = this.readBits(bitsPerCoordinate); + var decode = this.context.decode; + var scale = bitsPerCoordinate < 32 ? 1 / ((1 << bitsPerCoordinate) - 1) : + 2.3283064365386963e-10; // 2 ^ -32 + return [ + xi * scale * (decode[1] - decode[0]) + decode[0], + yi * scale * (decode[3] - decode[2]) + decode[2] + ]; + }, + readComponents: function MeshStreamReader_readComponents() { + var numComps = this.context.numComps; + var bitsPerComponent = this.context.bitsPerComponent; + var scale = bitsPerComponent < 32 ? 1 / ((1 << bitsPerComponent) - 1) : + 2.3283064365386963e-10; // 2 ^ -32 + var decode = this.context.decode; + var components = this.tmpCompsBuf; + for (var i = 0, j = 4; i < numComps; i++, j += 2) { + var ci = this.readBits(bitsPerComponent); + components[i] = ci * scale * (decode[j + 1] - decode[j]) + decode[j]; + } + var color = this.tmpCsCompsBuf; + if (this.context.colorFn) { + this.context.colorFn(components, 0, color, 0); + } + return this.context.colorSpace.getRgb(color, 0); + } + }; + + function decodeType4Shading(mesh, reader) { + var coords = mesh.coords; + var colors = mesh.colors; + var operators = []; + var ps = []; // not maintaining cs since that will match ps + var verticesLeft = 0; // assuming we have all data to start a new triangle + while (reader.hasData) { + var f = reader.readFlag(); + var coord = reader.readCoordinate(); + var color = reader.readComponents(); + if (verticesLeft === 0) { // ignoring flags if we started a triangle + assert(0 <= f && f <= 2, 'Unknown type4 flag'); + switch (f) { + case 0: + verticesLeft = 3; + break; + case 1: + ps.push(ps[ps.length - 2], ps[ps.length - 1]); + verticesLeft = 1; + break; + case 2: + ps.push(ps[ps.length - 3], ps[ps.length - 1]); + verticesLeft = 1; + break; + } + operators.push(f); + } + ps.push(coords.length); + coords.push(coord); + colors.push(color); + verticesLeft--; + + reader.align(); + } + + var psPacked = new Int32Array(ps); + + mesh.figures.push({ + type: 'triangles', + coords: psPacked, + colors: psPacked + }); + } + + function decodeType5Shading(mesh, reader, verticesPerRow) { + var coords = mesh.coords; + var colors = mesh.colors; + var ps = []; // not maintaining cs since that will match ps + while (reader.hasData) { + var coord = reader.readCoordinate(); + var color = reader.readComponents(); + ps.push(coords.length); + coords.push(coord); + colors.push(color); + } + + var psPacked = new Int32Array(ps); + + mesh.figures.push({ + type: 'lattice', + coords: psPacked, + colors: psPacked, + verticesPerRow: verticesPerRow + }); + } + + var MIN_SPLIT_PATCH_CHUNKS_AMOUNT = 3; + var MAX_SPLIT_PATCH_CHUNKS_AMOUNT = 20; + + var TRIANGLE_DENSITY = 20; // count of triangles per entire mesh bounds + + var getB = (function getBClosure() { + function buildB(count) { + var lut = []; + for (var i = 0; i <= count; i++) { + var t = i / count, t_ = 1 - t; + lut.push(new Float32Array([t_ * t_ * t_, 3 * t * t_ * t_, + 3 * t * t * t_, t * t * t])); + } + return lut; + } + var cache = []; + return function getB(count) { + if (!cache[count]) { + cache[count] = buildB(count); + } + return cache[count]; + }; + })(); + + function buildFigureFromPatch(mesh, index) { + var figure = mesh.figures[index]; + assert(figure.type === 'patch', 'Unexpected patch mesh figure'); + + var coords = mesh.coords, colors = mesh.colors; + var pi = figure.coords; + var ci = figure.colors; + + var figureMinX = Math.min(coords[pi[0]][0], coords[pi[3]][0], + coords[pi[12]][0], coords[pi[15]][0]); + var figureMinY = Math.min(coords[pi[0]][1], coords[pi[3]][1], + coords[pi[12]][1], coords[pi[15]][1]); + var figureMaxX = Math.max(coords[pi[0]][0], coords[pi[3]][0], + coords[pi[12]][0], coords[pi[15]][0]); + var figureMaxY = Math.max(coords[pi[0]][1], coords[pi[3]][1], + coords[pi[12]][1], coords[pi[15]][1]); + var splitXBy = Math.ceil((figureMaxX - figureMinX) * TRIANGLE_DENSITY / + (mesh.bounds[2] - mesh.bounds[0])); + splitXBy = Math.max(MIN_SPLIT_PATCH_CHUNKS_AMOUNT, + Math.min(MAX_SPLIT_PATCH_CHUNKS_AMOUNT, splitXBy)); + var splitYBy = Math.ceil((figureMaxY - figureMinY) * TRIANGLE_DENSITY / + (mesh.bounds[3] - mesh.bounds[1])); + splitYBy = Math.max(MIN_SPLIT_PATCH_CHUNKS_AMOUNT, + Math.min(MAX_SPLIT_PATCH_CHUNKS_AMOUNT, splitYBy)); + + var verticesPerRow = splitXBy + 1; + var figureCoords = new Int32Array((splitYBy + 1) * verticesPerRow); + var figureColors = new Int32Array((splitYBy + 1) * verticesPerRow); + var k = 0; + var cl = new Uint8Array(3), cr = new Uint8Array(3); + var c0 = colors[ci[0]], c1 = colors[ci[1]], + c2 = colors[ci[2]], c3 = colors[ci[3]]; + var bRow = getB(splitYBy), bCol = getB(splitXBy); + for (var row = 0; row <= splitYBy; row++) { + cl[0] = ((c0[0] * (splitYBy - row) + c2[0] * row) / splitYBy) | 0; + cl[1] = ((c0[1] * (splitYBy - row) + c2[1] * row) / splitYBy) | 0; + cl[2] = ((c0[2] * (splitYBy - row) + c2[2] * row) / splitYBy) | 0; + + cr[0] = ((c1[0] * (splitYBy - row) + c3[0] * row) / splitYBy) | 0; + cr[1] = ((c1[1] * (splitYBy - row) + c3[1] * row) / splitYBy) | 0; + cr[2] = ((c1[2] * (splitYBy - row) + c3[2] * row) / splitYBy) | 0; + + for (var col = 0; col <= splitXBy; col++, k++) { + if ((row === 0 || row === splitYBy) && + (col === 0 || col === splitXBy)) { + continue; + } + var x = 0, y = 0; + var q = 0; + for (var i = 0; i <= 3; i++) { + for (var j = 0; j <= 3; j++, q++) { + var m = bRow[row][i] * bCol[col][j]; + x += coords[pi[q]][0] * m; + y += coords[pi[q]][1] * m; + } + } + figureCoords[k] = coords.length; + coords.push([x, y]); + figureColors[k] = colors.length; + var newColor = new Uint8Array(3); + newColor[0] = ((cl[0] * (splitXBy - col) + cr[0] * col) / splitXBy) | 0; + newColor[1] = ((cl[1] * (splitXBy - col) + cr[1] * col) / splitXBy) | 0; + newColor[2] = ((cl[2] * (splitXBy - col) + cr[2] * col) / splitXBy) | 0; + colors.push(newColor); + } + } + figureCoords[0] = pi[0]; + figureColors[0] = ci[0]; + figureCoords[splitXBy] = pi[3]; + figureColors[splitXBy] = ci[1]; + figureCoords[verticesPerRow * splitYBy] = pi[12]; + figureColors[verticesPerRow * splitYBy] = ci[2]; + figureCoords[verticesPerRow * splitYBy + splitXBy] = pi[15]; + figureColors[verticesPerRow * splitYBy + splitXBy] = ci[3]; + + mesh.figures[index] = { + type: 'lattice', + coords: figureCoords, + colors: figureColors, + verticesPerRow: verticesPerRow + }; + } + + function decodeType6Shading(mesh, reader) { + // A special case of Type 7. The p11, p12, p21, p22 automatically filled + var coords = mesh.coords; + var colors = mesh.colors; + var ps = new Int32Array(16); // p00, p10, ..., p30, p01, ..., p33 + var cs = new Int32Array(4); // c00, c30, c03, c33 + while (reader.hasData) { + var f = reader.readFlag(); + assert(0 <= f && f <= 3, 'Unknown type6 flag'); + var i, ii; + var pi = coords.length; + for (i = 0, ii = (f !== 0 ? 8 : 12); i < ii; i++) { + coords.push(reader.readCoordinate()); + } + var ci = colors.length; + for (i = 0, ii = (f !== 0 ? 2 : 4); i < ii; i++) { + colors.push(reader.readComponents()); + } + var tmp1, tmp2, tmp3, tmp4; + switch (f) { + case 0: + ps[12] = pi + 3; ps[13] = pi + 4; ps[14] = pi + 5; ps[15] = pi + 6; + ps[ 8] = pi + 2; /* values for 5, 6, 9, 10 are */ ps[11] = pi + 7; + ps[ 4] = pi + 1; /* calculated below */ ps[ 7] = pi + 8; + ps[ 0] = pi; ps[ 1] = pi + 11; ps[ 2] = pi + 10; ps[ 3] = pi + 9; + cs[2] = ci + 1; cs[3] = ci + 2; + cs[0] = ci; cs[1] = ci + 3; + break; + case 1: + tmp1 = ps[12]; tmp2 = ps[13]; tmp3 = ps[14]; tmp4 = ps[15]; + ps[12] = pi + 5; ps[13] = pi + 4; ps[14] = pi + 3; ps[15] = pi + 2; + ps[ 8] = pi + 6; /* values for 5, 6, 9, 10 are */ ps[11] = pi + 1; + ps[ 4] = pi + 7; /* calculated below */ ps[ 7] = pi; + ps[ 0] = tmp1; ps[ 1] = tmp2; ps[ 2] = tmp3; ps[ 3] = tmp4; + tmp1 = cs[2]; tmp2 = cs[3]; + cs[2] = ci + 1; cs[3] = ci; + cs[0] = tmp1; cs[1] = tmp2; + break; + case 2: + ps[12] = ps[15]; ps[13] = pi + 7; ps[14] = pi + 6; ps[15] = pi + 5; + ps[ 8] = ps[11]; /* values for 5, 6, 9, 10 are */ ps[11] = pi + 4; + ps[ 4] = ps[7]; /* calculated below */ ps[ 7] = pi + 3; + ps[ 0] = ps[3]; ps[ 1] = pi; ps[ 2] = pi + 1; ps[ 3] = pi + 2; + cs[2] = cs[3]; cs[3] = ci + 1; + cs[0] = cs[1]; cs[1] = ci; + break; + case 3: + ps[12] = ps[0]; ps[13] = ps[1]; ps[14] = ps[2]; ps[15] = ps[3]; + ps[ 8] = pi; /* values for 5, 6, 9, 10 are */ ps[11] = pi + 7; + ps[ 4] = pi + 1; /* calculated below */ ps[ 7] = pi + 6; + ps[ 0] = pi + 2; ps[ 1] = pi + 3; ps[ 2] = pi + 4; ps[ 3] = pi + 5; + cs[2] = cs[0]; cs[3] = cs[1]; + cs[0] = ci; cs[1] = ci + 1; + break; + } + // set p11, p12, p21, p22 + ps[5] = coords.length; + coords.push([ + (-4 * coords[ps[0]][0] - coords[ps[15]][0] + + 6 * (coords[ps[4]][0] + coords[ps[1]][0]) - + 2 * (coords[ps[12]][0] + coords[ps[3]][0]) + + 3 * (coords[ps[13]][0] + coords[ps[7]][0])) / 9, + (-4 * coords[ps[0]][1] - coords[ps[15]][1] + + 6 * (coords[ps[4]][1] + coords[ps[1]][1]) - + 2 * (coords[ps[12]][1] + coords[ps[3]][1]) + + 3 * (coords[ps[13]][1] + coords[ps[7]][1])) / 9 + ]); + ps[6] = coords.length; + coords.push([ + (-4 * coords[ps[3]][0] - coords[ps[12]][0] + + 6 * (coords[ps[2]][0] + coords[ps[7]][0]) - + 2 * (coords[ps[0]][0] + coords[ps[15]][0]) + + 3 * (coords[ps[4]][0] + coords[ps[14]][0])) / 9, + (-4 * coords[ps[3]][1] - coords[ps[12]][1] + + 6 * (coords[ps[2]][1] + coords[ps[7]][1]) - + 2 * (coords[ps[0]][1] + coords[ps[15]][1]) + + 3 * (coords[ps[4]][1] + coords[ps[14]][1])) / 9 + ]); + ps[9] = coords.length; + coords.push([ + (-4 * coords[ps[12]][0] - coords[ps[3]][0] + + 6 * (coords[ps[8]][0] + coords[ps[13]][0]) - + 2 * (coords[ps[0]][0] + coords[ps[15]][0]) + + 3 * (coords[ps[11]][0] + coords[ps[1]][0])) / 9, + (-4 * coords[ps[12]][1] - coords[ps[3]][1] + + 6 * (coords[ps[8]][1] + coords[ps[13]][1]) - + 2 * (coords[ps[0]][1] + coords[ps[15]][1]) + + 3 * (coords[ps[11]][1] + coords[ps[1]][1])) / 9 + ]); + ps[10] = coords.length; + coords.push([ + (-4 * coords[ps[15]][0] - coords[ps[0]][0] + + 6 * (coords[ps[11]][0] + coords[ps[14]][0]) - + 2 * (coords[ps[12]][0] + coords[ps[3]][0]) + + 3 * (coords[ps[2]][0] + coords[ps[8]][0])) / 9, + (-4 * coords[ps[15]][1] - coords[ps[0]][1] + + 6 * (coords[ps[11]][1] + coords[ps[14]][1]) - + 2 * (coords[ps[12]][1] + coords[ps[3]][1]) + + 3 * (coords[ps[2]][1] + coords[ps[8]][1])) / 9 + ]); + mesh.figures.push({ + type: 'patch', + coords: new Int32Array(ps), // making copies of ps and cs + colors: new Int32Array(cs) + }); + } + } + + function decodeType7Shading(mesh, reader) { + var coords = mesh.coords; + var colors = mesh.colors; + var ps = new Int32Array(16); // p00, p10, ..., p30, p01, ..., p33 + var cs = new Int32Array(4); // c00, c30, c03, c33 + while (reader.hasData) { + var f = reader.readFlag(); + assert(0 <= f && f <= 3, 'Unknown type7 flag'); + var i, ii; + var pi = coords.length; + for (i = 0, ii = (f !== 0 ? 12 : 16); i < ii; i++) { + coords.push(reader.readCoordinate()); + } + var ci = colors.length; + for (i = 0, ii = (f !== 0 ? 2 : 4); i < ii; i++) { + colors.push(reader.readComponents()); + } + var tmp1, tmp2, tmp3, tmp4; + switch (f) { + case 0: + ps[12] = pi + 3; ps[13] = pi + 4; ps[14] = pi + 5; ps[15] = pi + 6; + ps[ 8] = pi + 2; ps[ 9] = pi + 13; ps[10] = pi + 14; ps[11] = pi + 7; + ps[ 4] = pi + 1; ps[ 5] = pi + 12; ps[ 6] = pi + 15; ps[ 7] = pi + 8; + ps[ 0] = pi; ps[ 1] = pi + 11; ps[ 2] = pi + 10; ps[ 3] = pi + 9; + cs[2] = ci + 1; cs[3] = ci + 2; + cs[0] = ci; cs[1] = ci + 3; + break; + case 1: + tmp1 = ps[12]; tmp2 = ps[13]; tmp3 = ps[14]; tmp4 = ps[15]; + ps[12] = pi + 5; ps[13] = pi + 4; ps[14] = pi + 3; ps[15] = pi + 2; + ps[ 8] = pi + 6; ps[ 9] = pi + 11; ps[10] = pi + 10; ps[11] = pi + 1; + ps[ 4] = pi + 7; ps[ 5] = pi + 8; ps[ 6] = pi + 9; ps[ 7] = pi; + ps[ 0] = tmp1; ps[ 1] = tmp2; ps[ 2] = tmp3; ps[ 3] = tmp4; + tmp1 = cs[2]; tmp2 = cs[3]; + cs[2] = ci + 1; cs[3] = ci; + cs[0] = tmp1; cs[1] = tmp2; + break; + case 2: + ps[12] = ps[15]; ps[13] = pi + 7; ps[14] = pi + 6; ps[15] = pi + 5; + ps[ 8] = ps[11]; ps[ 9] = pi + 8; ps[10] = pi + 11; ps[11] = pi + 4; + ps[ 4] = ps[7]; ps[ 5] = pi + 9; ps[ 6] = pi + 10; ps[ 7] = pi + 3; + ps[ 0] = ps[3]; ps[ 1] = pi; ps[ 2] = pi + 1; ps[ 3] = pi + 2; + cs[2] = cs[3]; cs[3] = ci + 1; + cs[0] = cs[1]; cs[1] = ci; + break; + case 3: + ps[12] = ps[0]; ps[13] = ps[1]; ps[14] = ps[2]; ps[15] = ps[3]; + ps[ 8] = pi; ps[ 9] = pi + 9; ps[10] = pi + 8; ps[11] = pi + 7; + ps[ 4] = pi + 1; ps[ 5] = pi + 10; ps[ 6] = pi + 11; ps[ 7] = pi + 6; + ps[ 0] = pi + 2; ps[ 1] = pi + 3; ps[ 2] = pi + 4; ps[ 3] = pi + 5; + cs[2] = cs[0]; cs[3] = cs[1]; + cs[0] = ci; cs[1] = ci + 1; + break; + } + mesh.figures.push({ + type: 'patch', + coords: new Int32Array(ps), // making copies of ps and cs + colors: new Int32Array(cs) + }); + } + } + + function updateBounds(mesh) { + var minX = mesh.coords[0][0], minY = mesh.coords[0][1], + maxX = minX, maxY = minY; + for (var i = 1, ii = mesh.coords.length; i < ii; i++) { + var x = mesh.coords[i][0], y = mesh.coords[i][1]; + minX = minX > x ? x : minX; + minY = minY > y ? y : minY; + maxX = maxX < x ? x : maxX; + maxY = maxY < y ? y : maxY; + } + mesh.bounds = [minX, minY, maxX, maxY]; + } + + function packData(mesh) { + var i, ii, j, jj; + + var coords = mesh.coords; + var coordsPacked = new Float32Array(coords.length * 2); + for (i = 0, j = 0, ii = coords.length; i < ii; i++) { + var xy = coords[i]; + coordsPacked[j++] = xy[0]; + coordsPacked[j++] = xy[1]; + } + mesh.coords = coordsPacked; + + var colors = mesh.colors; + var colorsPacked = new Uint8Array(colors.length * 3); + for (i = 0, j = 0, ii = colors.length; i < ii; i++) { + var c = colors[i]; + colorsPacked[j++] = c[0]; + colorsPacked[j++] = c[1]; + colorsPacked[j++] = c[2]; + } + mesh.colors = colorsPacked; + + var figures = mesh.figures; + for (i = 0, ii = figures.length; i < ii; i++) { + var figure = figures[i], ps = figure.coords, cs = figure.colors; + for (j = 0, jj = ps.length; j < jj; j++) { + ps[j] *= 2; + cs[j] *= 3; + } + } + } + + function Mesh(stream, matrix, xref, res) { + assert(isStream(stream), 'Mesh data is not a stream'); + var dict = stream.dict; + this.matrix = matrix; + this.shadingType = dict.get('ShadingType'); + this.type = 'Pattern'; + this.bbox = dict.get('BBox'); + var cs = dict.get('ColorSpace', 'CS'); + cs = ColorSpace.parse(cs, xref, res); + this.cs = cs; + this.background = dict.has('Background') ? + cs.getRgb(dict.get('Background'), 0) : null; + + var fnObj = dict.get('Function'); + var fn = fnObj ? PDFFunction.parseArray(xref, fnObj) : null; + + this.coords = []; + this.colors = []; + this.figures = []; + + var decodeContext = { + bitsPerCoordinate: dict.get('BitsPerCoordinate'), + bitsPerComponent: dict.get('BitsPerComponent'), + bitsPerFlag: dict.get('BitsPerFlag'), + decode: dict.get('Decode'), + colorFn: fn, + colorSpace: cs, + numComps: fn ? 1 : cs.numComps + }; + var reader = new MeshStreamReader(stream, decodeContext); + + var patchMesh = false; + switch (this.shadingType) { + case PatternType.FREE_FORM_MESH: + decodeType4Shading(this, reader); + break; + case PatternType.LATTICE_FORM_MESH: + var verticesPerRow = dict.get('VerticesPerRow') | 0; + assert(verticesPerRow >= 2, 'Invalid VerticesPerRow'); + decodeType5Shading(this, reader, verticesPerRow); + break; + case PatternType.COONS_PATCH_MESH: + decodeType6Shading(this, reader); + patchMesh = true; + break; + case PatternType.TENSOR_PATCH_MESH: + decodeType7Shading(this, reader); + patchMesh = true; + break; + default: + error('Unsupported mesh type.'); + break; + } + + if (patchMesh) { + // dirty bounds calculation for determining, how dense shall be triangles + updateBounds(this); + for (var i = 0, ii = this.figures.length; i < ii; i++) { + buildFigureFromPatch(this, i); + } + } + // calculate bounds + updateBounds(this); + + packData(this); + } + + Mesh.prototype = { + getIR: function Mesh_getIR() { + return ['Mesh', this.shadingType, this.coords, this.colors, this.figures, + this.bounds, this.matrix, this.bbox, this.background]; + } + }; + + return Mesh; +})(); + +Shadings.Dummy = (function DummyClosure() { + function Dummy() { + this.type = 'Pattern'; + } + + Dummy.prototype = { + getIR: function Dummy_getIR() { + return ['Dummy']; + } + }; + return Dummy; +})(); + +function getTilingPatternIR(operatorList, dict, args) { + var matrix = dict.get('Matrix'); + var bbox = dict.get('BBox'); + var xstep = dict.get('XStep'); + var ystep = dict.get('YStep'); + var paintType = dict.get('PaintType'); + var tilingType = dict.get('TilingType'); + + return [ + 'TilingPattern', args, operatorList, matrix, bbox, xstep, ystep, + paintType, tilingType + ]; +} var PartialEvaluator = (function PartialEvaluatorClosure() { function PartialEvaluator(pdfManager, xref, handler, pageIndex, uniquePrefix, idCounters, fontCache) { - this.state = new EvalState(); - this.stateStack = []; - this.pdfManager = pdfManager; this.xref = xref; this.handler = handler; @@ -14588,6 +10558,28 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { this.fontCache = fontCache; } + // Trying to minimize Date.now() usage and check every 100 time + var TIME_SLOT_DURATION_MS = 20; + var CHECK_TIME_EVERY = 100; + function TimeSlotManager() { + this.reset(); + } + TimeSlotManager.prototype = { + check: function TimeSlotManager_check() { + if (++this.checked < CHECK_TIME_EVERY) { + return false; + } + this.checked = 0; + return this.endTime <= Date.now(); + }, + reset: function TimeSlotManager_reset() { + this.endTime = Date.now() + TIME_SLOT_DURATION_MS; + this.checked = 0; + } + }; + + var deferred = Promise.resolve(); + var TILING_PATTERN = 1, SHADING_PATTERN = 2; PartialEvaluator.prototype = { @@ -14596,14 +10588,20 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { return false; } + var processed = Object.create(null); + if (resources.objId) { + processed[resources.objId] = true; + } + var nodes = [resources]; while (nodes.length) { + var key; var node = nodes.shift(); // First check the current resources for blend modes. var graphicStates = node.get('ExtGState'); if (isDict(graphicStates)) { graphicStates = graphicStates.getAll(); - for (var key in graphicStates) { + for (key in graphicStates) { var graphicState = graphicStates[key]; var bm = graphicState['BM']; if (isName(bm) && bm.name !== 'Normal') { @@ -14617,14 +10615,26 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { continue; } xObjects = xObjects.getAll(); - for (var key in xObjects) { + for (key in xObjects) { var xObject = xObjects[key]; if (!isStream(xObject)) { continue; } + if (xObject.dict.objId) { + if (processed[xObject.dict.objId]) { + // stream has objId and is processed already + continue; + } + processed[xObject.dict.objId] = true; + } var xResources = xObject.dict.get('Resources'); - if (isDict(xResources)) { + // Checking objId to detect an infinite loop. + if (isDict(xResources) && + (!xResources.objId || !processed[xResources.objId])) { nodes.push(xResources); + if (xResources.objId) { + processed[xResources.objId] = true; + } } } } @@ -14634,9 +10644,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { buildFormXObject: function PartialEvaluator_buildFormXObject(resources, xobj, smask, operatorList, - state) { - var self = this; - + initialState) { var matrix = xobj.dict.get('Matrix'); var bbox = xobj.dict.get('BBox'); var group = xobj.dict.get('Group'); @@ -14644,47 +10652,63 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { var groupOptions = { matrix: matrix, bbox: bbox, - smask: !!smask, + smask: smask, isolated: false, knockout: false }; var groupSubtype = group.get('S'); + var colorSpace; if (isName(groupSubtype) && groupSubtype.name === 'Transparency') { - groupOptions.isolated = group.get('I') || false; - groupOptions.knockout = group.get('K') || false; - // There is also a group colorspace, but since we put everything in - // RGB I'm not sure we need it. + groupOptions.isolated = (group.get('I') || false); + groupOptions.knockout = (group.get('K') || false); + colorSpace = (group.has('CS') ? + ColorSpace.parse(group.get('CS'), this.xref, resources) : null); } + + if (smask && smask.backdrop) { + colorSpace = colorSpace || ColorSpace.singletons.rgb; + smask.backdrop = colorSpace.getRgb(smask.backdrop, 0); + } + operatorList.addOp(OPS.beginGroup, [groupOptions]); } operatorList.addOp(OPS.paintFormXObjectBegin, [matrix, bbox]); - this.getOperatorList(xobj, xobj.dict.get('Resources') || resources, - operatorList, state); - operatorList.addOp(OPS.paintFormXObjectEnd, []); + return this.getOperatorList(xobj, + (xobj.dict.get('Resources') || resources), operatorList, initialState). + then(function () { + operatorList.addOp(OPS.paintFormXObjectEnd, []); - if (group) { - operatorList.addOp(OPS.endGroup, [groupOptions]); - } + if (group) { + operatorList.addOp(OPS.endGroup, [groupOptions]); + } + }); }, - buildPaintImageXObject: function PartialEvaluator_buildPaintImageXObject( - resources, image, inline, operatorList) { + buildPaintImageXObject: + function PartialEvaluator_buildPaintImageXObject(resources, image, + inline, operatorList, + cacheKey, cache) { var self = this; var dict = image.dict; var w = dict.get('Width', 'W'); var h = dict.get('Height', 'H'); + if (!(w && isNum(w)) || !(h && isNum(h))) { + warn('Image dimensions are missing, or not numbers.'); + return; + } if (PDFJS.maxImageSize !== -1 && w * h > PDFJS.maxImageSize) { warn('Image exceeded maximum allowed size and was removed.'); return; } - var imageMask = dict.get('ImageMask', 'IM') || false; + var imageMask = (dict.get('ImageMask', 'IM') || false); + var imgData, args; if (imageMask) { - // This depends on a tmpCanvas beeing filled with the + // This depends on a tmpCanvas being filled with the // current fillStyle, such that processing the pixel // data can't be done here. Instead of creating a // complete PDFImage, only read the information needed @@ -14695,109 +10719,137 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { var bitStrideLength = (width + 7) >> 3; var imgArray = image.getBytes(bitStrideLength * height); var decode = dict.get('Decode', 'D'); - var inverseDecode = !!decode && decode[0] > 0; + var inverseDecode = (!!decode && decode[0] > 0); - operatorList.addOp(OPS.paintImageMaskXObject, - [PDFImage.createMask(imgArray, width, height, inverseDecode)] - ); + imgData = PDFImage.createMask(imgArray, width, height, + image instanceof DecodeStream, + inverseDecode); + imgData.cached = true; + args = [imgData]; + operatorList.addOp(OPS.paintImageMaskXObject, args); + if (cacheKey) { + cache.key = cacheKey; + cache.fn = OPS.paintImageMaskXObject; + cache.args = args; + } return; } - var softMask = dict.get('SMask', 'SM') || false; - var mask = dict.get('Mask') || false; + var softMask = (dict.get('SMask', 'SM') || false); + var mask = (dict.get('Mask') || false); var SMALL_IMAGE_DIMENSIONS = 200; // Inlining small images into the queue as RGB data - if (inline && !softMask && !mask && - !(image instanceof JpegStream) && + if (inline && !softMask && !mask && !(image instanceof JpegStream) && (w + h) < SMALL_IMAGE_DIMENSIONS) { var imageObj = new PDFImage(this.xref, resources, image, inline, null, null); - var imgData = imageObj.getImageData(); + // We force the use of RGBA_32BPP images here, because we can't handle + // any other kind. + imgData = imageObj.createImageData(/* forceRGBA = */ true); operatorList.addOp(OPS.paintInlineImageXObject, [imgData]); return; } // If there is no imageMask, create the PDFImage and a lot // of image processing can be done here. - var uniquePrefix = this.uniquePrefix || ''; + var uniquePrefix = (this.uniquePrefix || ''); var objId = 'img_' + uniquePrefix + (++this.idCounters.obj); operatorList.addDependency(objId); - var args = [objId, w, h]; + args = [objId, w, h]; if (!softMask && !mask && image instanceof JpegStream && image.isNativelySupported(this.xref, resources)) { // These JPEGs don't need any more processing so we can just send it. operatorList.addOp(OPS.paintJpegXObject, args); - this.handler.send( - 'obj', [objId, this.pageIndex, 'JpegStream', image.getIR()]); + this.handler.send('obj', + [objId, this.pageIndex, 'JpegStream', image.getIR()]); return; } - - PDFImage.buildImage(function(imageObj) { - var imgData = imageObj.getImageData(); + PDFImage.buildImage(self.handler, self.xref, resources, image, inline). + then(function(imageObj) { + var imgData = imageObj.createImageData(/* forceRGBA = */ false); self.handler.send('obj', [objId, self.pageIndex, 'Image', imgData], - null, [imgData.data.buffer]); - }, self.handler, self.xref, resources, image, inline); + [imgData.data.buffer]); + }).then(null, function (reason) { + warn('Unable to decode image: ' + reason); + self.handler.send('obj', [objId, self.pageIndex, 'Image', null]); + }); operatorList.addOp(OPS.paintImageXObject, args); + if (cacheKey) { + cache.key = cacheKey; + cache.fn = OPS.paintImageXObject; + cache.args = args; + } }, - handleTilingType: function PartialEvaluator_handleTilingType( - fn, args, resources, pattern, patternDict, - operatorList) { + handleSMask: function PartialEvaluator_handleSmask(smask, resources, + operatorList, + stateManager) { + var smaskContent = smask.get('G'); + var smaskOptions = { + subtype: smask.get('S').name, + backdrop: smask.get('BC') + }; + return this.buildFormXObject(resources, smaskContent, smaskOptions, + operatorList, stateManager.state.clone()); + }, + + handleTilingType: + function PartialEvaluator_handleTilingType(fn, args, resources, + pattern, patternDict, + operatorList) { // Create an IR of the pattern code. - var tilingOpList = this.getOperatorList(pattern, - patternDict.get('Resources') || resources); - // Add the dependencies to the parent operator list so they are resolved - // before sub operator list is executed synchronously. - operatorList.addDependencies(tilingOpList.dependencies); - operatorList.addOp(fn, TilingPattern.getIR({ - fnArray: tilingOpList.fnArray, - argsArray: tilingOpList.argsArray - }, patternDict, args)); + var tilingOpList = new OperatorList(); + return this.getOperatorList(pattern, + (patternDict.get('Resources') || resources), tilingOpList). + then(function () { + // Add the dependencies to the parent operator list so they are + // resolved before sub operator list is executed synchronously. + operatorList.addDependencies(tilingOpList.dependencies); + operatorList.addOp(fn, getTilingPatternIR({ + fnArray: tilingOpList.fnArray, + argsArray: tilingOpList.argsArray + }, patternDict, args)); + }); }, - handleSetFont: function PartialEvaluator_handleSetFont( - resources, fontArgs, fontRef, operatorList) { - + handleSetFont: + function PartialEvaluator_handleSetFont(resources, fontArgs, fontRef, + operatorList, state) { // TODO(mack): Not needed? var fontName; if (fontArgs) { fontArgs = fontArgs.slice(); fontName = fontArgs[0].name; } + var self = this; - var font = this.loadFont(fontName, fontRef, this.xref, resources, - operatorList); - this.state.font = font; - var loadedName = font.loadedName; - if (!font.sent) { - var fontData = font.translated.exportData(); - - self.handler.send('commonobj', [ - loadedName, - 'Font', - fontData - ]); - font.sent = true; - } - - return loadedName; + return this.loadFont(fontName, fontRef, this.xref, resources).then( + function (translated) { + if (!translated.font.isType3Font) { + return translated; + } + return translated.loadType3Data(self, resources, operatorList).then( + function () { + return translated; + }); + }).then(function (translated) { + state.font = translated.font; + translated.send(self.handler); + return translated.loadedName; + }); }, - handleText: function PartialEvaluator_handleText(chars) { - var font = this.state.font.translated; + handleText: function PartialEvaluator_handleText(chars, state) { + var font = state.font; var glyphs = font.charsToGlyphs(chars); - var isAddToPathSet = !!(this.state.textRenderingMode & + var isAddToPathSet = !!(state.textRenderingMode & TextRenderingMode.ADD_TO_PATH_FLAG); if (font.data && (isAddToPathSet || PDFJS.disableFontFace)) { - for (var i = 0; i < glyphs.length; i++) { - if (glyphs[i] === null) { - continue; - } - var fontChar = glyphs[i].fontChar; + var buildPath = function (fontChar) { if (!font.renderer.hasBuiltPath(fontChar)) { var path = font.renderer.getPathJs(fontChar); this.handler.send('commonobj', [ @@ -14806,6 +10858,21 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { path ]); } + }.bind(this); + + for (var i = 0, ii = glyphs.length; i < ii; i++) { + var glyph = glyphs[i]; + if (glyph === null) { + continue; + } + buildPath(glyph.fontChar); + + // If the glyph has an accent we need to build a path for its + // fontChar too, otherwise CanvasGraphics_paintChar will fail. + var accent = glyph.accent; + if (accent && accent.fontChar) { + buildPath(accent.fontChar); + } } } @@ -14813,12 +10880,15 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { }, setGState: function PartialEvaluator_setGState(resources, gState, - operatorList) { - + operatorList, xref, + stateManager) { + // This array holds the converted/processed state data. + var gStateObj = []; + var gStateMap = gState.map; var self = this; - // TODO(mack): This should be rewritten so that this function returns - // what should be added to the queue during each iteration - function setGStateForKey(gStateObj, key, value) { + var promise = Promise.resolve(); + for (var key in gStateMap) { + var value = gStateMap[key]; switch (key) { case 'Type': break; @@ -14834,21 +10904,37 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { gStateObj.push([key, value]); break; case 'Font': - var loadedName = self.handleSetFont(resources, null, value[0], - operatorList); - operatorList.addDependency(loadedName); - gStateObj.push([key, [loadedName, value[1]]]); + promise = promise.then(function () { + return self.handleSetFont(resources, null, value[0], + operatorList, stateManager.state). + then(function (loadedName) { + operatorList.addDependency(loadedName); + gStateObj.push([key, [loadedName, value[1]]]); + }); + }); break; case 'BM': gStateObj.push([key, value]); break; case 'SMask': - // We support the default so don't trigger a warning bar. - if (!isName(value) || value.name != 'None') - UnsupportedManager.notify(UNSUPPORTED_FEATURES.smask); + if (isName(value) && value.name === 'None') { + gStateObj.push([key, false]); + break; + } + var dict = xref.fetchIfRef(value); + if (isDict(dict)) { + promise = promise.then(function () { + return self.handleSMask(dict, resources, operatorList, + stateManager); + }); + gStateObj.push([key, true]); + } else { + warn('Unsupported SMask type'); + } + break; // Only generate info log messages for the following since - // they are unlikey to have a big impact on the rendering. + // they are unlikely to have a big impact on the rendering. case 'OP': case 'op': case 'OPM': @@ -14871,29 +10957,20 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { break; } } - - // This array holds the converted/processed state data. - var gStateObj = []; - var gStateMap = gState.map; - for (var key in gStateMap) { - var value = gStateMap[key]; - setGStateForKey(gStateObj, key, value); - } - - operatorList.addOp(OPS.setGState, [gStateObj]); + return promise.then(function () { + if (gStateObj.length >= 0) { + operatorList.addOp(OPS.setGState, [gStateObj]); + } + }); }, loadFont: function PartialEvaluator_loadFont(fontName, font, xref, - resources, - parentOperatorList) { + resources) { function errorFont() { - return { - translated: new ErrorFont('Font ' + fontName + ' is not available'), - loadedName: 'g_font_error' - }; + return Promise.resolve(new TranslatedFont('g_font_error', + new ErrorFont('Font ' + fontName + ' is not available'), font)); } - var fontRef; if (font) { // Loading by ref. assert(isRef(font)); @@ -14907,6 +10984,11 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { return errorFont(); } } + if (!fontRef) { + warn('fontRef not available'); + return errorFont(); + } + if (this.fontCache.has(fontRef)) { return this.fontCache.get(fontRef); } @@ -14915,140 +10997,216 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { if (!isDict(font)) { return errorFont(); } - // Workaround for bad PDF generators that doesn't reference fonts + + // We are holding font.translated references just for fontRef that are not + // dictionaries (Dict). See explanation below. + if (font.translated) { + return font.translated; + } + + var fontCapability = createPromiseCapability(); + + var preEvaluatedFont = this.preEvaluateFont(font, xref); + var descriptor = preEvaluatedFont.descriptor; + var fontID = fontRef.num + '_' + fontRef.gen; + if (isDict(descriptor)) { + if (!descriptor.fontAliases) { + descriptor.fontAliases = Object.create(null); + } + + var fontAliases = descriptor.fontAliases; + var hash = preEvaluatedFont.hash; + if (fontAliases[hash]) { + var aliasFontRef = fontAliases[hash].aliasRef; + if (aliasFontRef && this.fontCache.has(aliasFontRef)) { + this.fontCache.putAlias(fontRef, aliasFontRef); + return this.fontCache.get(fontRef); + } + } + + if (!fontAliases[hash]) { + fontAliases[hash] = { + fontID: Font.getFontID() + }; + } + + fontAliases[hash].aliasRef = fontRef; + fontID = fontAliases[hash].fontID; + } + + // Workaround for bad PDF generators that don't reference fonts // properly, i.e. by not using an object identifier. // Check if the fontRef is a Dict (as opposed to a standard object), // in which case we don't cache the font and instead reference it by // fontName in font.loadedName below. var fontRefIsDict = isDict(fontRef); if (!fontRefIsDict) { - this.fontCache.put(fontRef, font); + this.fontCache.put(fontRef, fontCapability.promise); } - // keep track of each font we translated so the caller can - // load them asynchronously before calling display on a page + // Keep track of each font we translated so the caller can + // load them asynchronously before calling display on a page. font.loadedName = 'g_font_' + (fontRefIsDict ? - fontName.replace(/\W/g, '') : (fontRef.num + '_' + fontRef.gen)); + fontName.replace(/\W/g, '') : fontID); + + font.translated = fontCapability.promise; + + // TODO move promises into translate font + var translatedPromise; + try { + translatedPromise = Promise.resolve( + this.translateFont(preEvaluatedFont, xref)); + } catch (e) { + translatedPromise = Promise.reject(e); + } + + translatedPromise.then(function (translatedFont) { + if (translatedFont.fontType !== undefined) { + var xrefFontStats = xref.stats.fontTypes; + xrefFontStats[translatedFont.fontType] = true; + } + + fontCapability.resolve(new TranslatedFont(font.loadedName, + translatedFont, font)); + }, function (reason) { + // TODO fontCapability.reject? + UnsupportedManager.notify(UNSUPPORTED_FEATURES.font); - if (!font.translated) { - var translated; try { - translated = this.translateFont(font, xref); - } catch (e) { - UnsupportedManager.notify(UNSUPPORTED_FEATURES.font); - translated = new ErrorFont(e instanceof Error ? e.message : e); - } - font.translated = translated; - } + // error, but it's still nice to have font type reported + var descriptor = preEvaluatedFont.descriptor; + var fontFile3 = descriptor && descriptor.get('FontFile3'); + var subtype = fontFile3 && fontFile3.get('Subtype'); + var fontType = getFontType(preEvaluatedFont.type, + subtype && subtype.name); + var xrefFontStats = xref.stats.fontTypes; + xrefFontStats[fontType] = true; + } catch (ex) { } - if (font.translated.loadCharProcs) { - var charProcs = font.get('CharProcs').getAll(); - var fontResources = font.get('Resources') || resources; - var charProcKeys = Object.keys(charProcs); - var charProcOperatorList = {}; - for (var i = 0, n = charProcKeys.length; i < n; ++i) { - var key = charProcKeys[i]; - var glyphStream = charProcs[key]; - var operatorList = this.getOperatorList(glyphStream, fontResources); - charProcOperatorList[key] = operatorList.getIR(); - if (!parentOperatorList) { - continue; - } - // Add the dependencies to the parent operator list so they are - // resolved before sub operator list is executed synchronously. - parentOperatorList.addDependencies(charProcOperatorList.dependencies); - } - font.translated.charProcOperatorList = charProcOperatorList; - font.loaded = true; - } else { - font.loaded = true; + fontCapability.resolve(new TranslatedFont(font.loadedName, + new ErrorFont(reason instanceof Error ? reason.message : reason), + font)); + }); + return fontCapability.promise; + }, + + buildPath: function PartialEvaluator_buildPath(operatorList, fn, args) { + var lastIndex = operatorList.length - 1; + if (!args) { + args = []; } - return font; + if (lastIndex < 0 || + operatorList.fnArray[lastIndex] !== OPS.constructPath) { + operatorList.addOp(OPS.constructPath, [[fn], args]); + } else { + var opArgs = operatorList.argsArray[lastIndex]; + opArgs[0].push(fn); + Array.prototype.push.apply(opArgs[1], args); + } + }, + + handleColorN: function PartialEvaluator_handleColorN(operatorList, fn, args, + cs, patterns, resources, xref) { + // compile tiling patterns + var patternName = args[args.length - 1]; + // SCN/scn applies patterns along with normal colors + var pattern; + if (isName(patternName) && + (pattern = patterns.get(patternName.name))) { + var dict = (isStream(pattern) ? pattern.dict : pattern); + var typeNum = dict.get('PatternType'); + + if (typeNum === TILING_PATTERN) { + var color = cs.base ? cs.base.getRgb(args, 0) : null; + return this.handleTilingType(fn, color, resources, pattern, + dict, operatorList); + } else if (typeNum === SHADING_PATTERN) { + var shading = dict.get('Shading'); + var matrix = dict.get('Matrix'); + pattern = Pattern.parseShading(shading, matrix, xref, resources); + operatorList.addOp(fn, pattern.getIR()); + return Promise.resolve(); + } else { + return Promise.reject('Unknown PatternType: ' + typeNum); + } + } + // TODO shall we fail here? + operatorList.addOp(fn, args); + return Promise.resolve(); }, getOperatorList: function PartialEvaluator_getOperatorList(stream, resources, operatorList, - evaluatorState) { + initialState) { var self = this; var xref = this.xref; - var handler = this.handler; + var imageCache = {}; - operatorList = operatorList || new OperatorList(); + assert(operatorList); - resources = resources || new Dict(); - var xobjs = resources.get('XObject') || new Dict(); - var patterns = resources.get('Pattern') || new Dict(); - var preprocessor = new EvaluatorPreprocessor(stream, xref); - if (evaluatorState) { - preprocessor.setState(evaluatorState); - } + resources = (resources || Dict.empty); + var xobjs = (resources.get('XObject') || Dict.empty); + var patterns = (resources.get('Pattern') || Dict.empty); + var stateManager = new StateManager(initialState || new EvalState()); + var preprocessor = new EvaluatorPreprocessor(stream, xref, stateManager); + var timeSlotManager = new TimeSlotManager(); - var promise = new LegacyPromise(); - var operation; - while ((operation = preprocessor.read())) { + return new Promise(function next(resolve, reject) { + timeSlotManager.reset(); + var stop, operation = {}, i, ii, cs; + while (!(stop = timeSlotManager.check())) { + // The arguments parsed by read() are used beyond this loop, so we + // cannot reuse the same array on each iteration. Therefore we pass + // in |null| as the initial value (see the comment on + // EvaluatorPreprocessor_read() for why). + operation.args = null; + if (!(preprocessor.read(operation))) { + break; + } var args = operation.args; var fn = operation.fn; - switch (fn) { - case OPS.setStrokeColorN: - case OPS.setFillColorN: - if (args[args.length - 1].code) { - break; - } - // compile tiling patterns - var patternName = args[args.length - 1]; - // SCN/scn applies patterns along with normal colors - var pattern; - if (isName(patternName) && - (pattern = patterns.get(patternName.name))) { - - var dict = isStream(pattern) ? pattern.dict : pattern; - var typeNum = dict.get('PatternType'); - - if (typeNum == TILING_PATTERN) { - self.handleTilingType(fn, args, resources, pattern, dict, - operatorList); - args = []; - continue; - } else if (typeNum == SHADING_PATTERN) { - var shading = dict.get('Shading'); - var matrix = dict.get('Matrix'); - var pattern = Pattern.parseShading(shading, matrix, xref, - resources); - args = pattern.getIR(); - } else { - error('Unkown PatternType ' + typeNum); - } - } - break; + switch (fn | 0) { case OPS.paintXObject: if (args[0].code) { break; } // eagerly compile XForm objects var name = args[0].name; + if (imageCache.key === name) { + operatorList.addOp(imageCache.fn, imageCache.args); + args = null; + continue; + } + var xobj = xobjs.get(name); if (xobj) { - assertWellFormed( - isStream(xobj), 'XObject should be a stream'); + assert(isStream(xobj), 'XObject should be a stream'); var type = xobj.dict.get('Subtype'); - assertWellFormed( - isName(type), - 'XObject should have a Name subtype' - ); + assert(isName(type), + 'XObject should have a Name subtype'); - if ('Form' == type.name) { - self.buildFormXObject(resources, xobj, null, operatorList, - preprocessor.getState()); - args = []; - continue; - } else if ('Image' == type.name) { + if (type.name === 'Form') { + stateManager.save(); + return self.buildFormXObject(resources, xobj, null, + operatorList, + stateManager.state.clone()). + then(function () { + stateManager.restore(); + next(resolve, reject); + }, reject); + } else if (type.name === 'Image') { self.buildPaintImageXObject(resources, xobj, false, - operatorList); - args = []; + operatorList, name, imageCache); + args = null; + continue; + } else if (type.name === 'PS') { + // PostScript XObjects are unused when viewing documents. + // See section 4.7.1 of Adobe's PDF reference. + info('Ignored XObject subtype PS'); continue; } else { error('Unhandled XObject subtype ' + type.name); @@ -15056,65 +11214,143 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { } break; case OPS.setFont: + var fontSize = args[1]; // eagerly collect all fonts - var loadedName = self.handleSetFont(resources, args, null, - operatorList); - operatorList.addDependency(loadedName); - args[0] = loadedName; - break; + return self.handleSetFont(resources, args, null, + operatorList, stateManager.state). + then(function (loadedName) { + operatorList.addDependency(loadedName); + operatorList.addOp(OPS.setFont, [loadedName, fontSize]); + next(resolve, reject); + }, reject); case OPS.endInlineImage: - self.buildPaintImageXObject(resources, args[0], true, - operatorList); - args = []; - continue; - case OPS.save: - var old = this.state; - this.stateStack.push(this.state); - this.state = old.clone(); - break; - case OPS.restore: - var prev = this.stateStack.pop(); - if (prev) { - this.state = prev; + var cacheKey = args[0].cacheKey; + if (cacheKey && imageCache.key === cacheKey) { + operatorList.addOp(imageCache.fn, imageCache.args); + args = null; + continue; } - break; + self.buildPaintImageXObject(resources, args[0], true, + operatorList, cacheKey, imageCache); + args = null; + continue; case OPS.showText: - args[0] = this.handleText(args[0]); + args[0] = self.handleText(args[0], stateManager.state); break; case OPS.showSpacedText: var arr = args[0]; + var combinedGlyphs = []; var arrLength = arr.length; - for (var i = 0; i < arrLength; ++i) { - if (isString(arr[i])) { - arr[i] = this.handleText(arr[i]); + for (i = 0; i < arrLength; ++i) { + var arrItem = arr[i]; + if (isString(arrItem)) { + Array.prototype.push.apply(combinedGlyphs, + self.handleText(arrItem, stateManager.state)); + } else if (isNum(arrItem)) { + combinedGlyphs.push(arrItem); } } + args[0] = combinedGlyphs; + fn = OPS.showText; break; case OPS.nextLineShowText: - args[0] = this.handleText(args[0]); + operatorList.addOp(OPS.nextLine); + args[0] = self.handleText(args[0], stateManager.state); + fn = OPS.showText; break; case OPS.nextLineSetSpacingShowText: - args[2] = this.handleText(args[2]); + operatorList.addOp(OPS.nextLine); + operatorList.addOp(OPS.setWordSpacing, [args.shift()]); + operatorList.addOp(OPS.setCharSpacing, [args.shift()]); + args[0] = self.handleText(args[0], stateManager.state); + fn = OPS.showText; break; case OPS.setTextRenderingMode: - this.state.textRenderingMode = args[0]; + stateManager.state.textRenderingMode = args[0]; break; - // Parse the ColorSpace data to a raw format. + case OPS.setFillColorSpace: + stateManager.state.fillColorSpace = + ColorSpace.parse(args[0], xref, resources); + continue; case OPS.setStrokeColorSpace: - args = [ColorSpace.parseToIR(args[0], xref, resources)]; + stateManager.state.strokeColorSpace = + ColorSpace.parse(args[0], xref, resources); + continue; + case OPS.setFillColor: + cs = stateManager.state.fillColorSpace; + args = cs.getRgb(args, 0); + fn = OPS.setFillRGBColor; break; + case OPS.setStrokeColor: + cs = stateManager.state.strokeColorSpace; + args = cs.getRgb(args, 0); + fn = OPS.setStrokeRGBColor; + break; + case OPS.setFillGray: + stateManager.state.fillColorSpace = ColorSpace.singletons.gray; + args = ColorSpace.singletons.gray.getRgb(args, 0); + fn = OPS.setFillRGBColor; + break; + case OPS.setStrokeGray: + stateManager.state.strokeColorSpace = ColorSpace.singletons.gray; + args = ColorSpace.singletons.gray.getRgb(args, 0); + fn = OPS.setStrokeRGBColor; + break; + case OPS.setFillCMYKColor: + stateManager.state.fillColorSpace = ColorSpace.singletons.cmyk; + args = ColorSpace.singletons.cmyk.getRgb(args, 0); + fn = OPS.setFillRGBColor; + break; + case OPS.setStrokeCMYKColor: + stateManager.state.strokeColorSpace = ColorSpace.singletons.cmyk; + args = ColorSpace.singletons.cmyk.getRgb(args, 0); + fn = OPS.setStrokeRGBColor; + break; + case OPS.setFillRGBColor: + stateManager.state.fillColorSpace = ColorSpace.singletons.rgb; + args = ColorSpace.singletons.rgb.getRgb(args, 0); + break; + case OPS.setStrokeRGBColor: + stateManager.state.strokeColorSpace = ColorSpace.singletons.rgb; + args = ColorSpace.singletons.rgb.getRgb(args, 0); + break; + case OPS.setFillColorN: + cs = stateManager.state.fillColorSpace; + if (cs.name === 'Pattern') { + return self.handleColorN(operatorList, OPS.setFillColorN, + args, cs, patterns, resources, xref).then(function() { + next(resolve, reject); + }, reject); + } + args = cs.getRgb(args, 0); + fn = OPS.setFillRGBColor; + break; + case OPS.setStrokeColorN: + cs = stateManager.state.strokeColorSpace; + if (cs.name === 'Pattern') { + return self.handleColorN(operatorList, OPS.setStrokeColorN, + args, cs, patterns, resources, xref).then(function() { + next(resolve, reject); + }, reject); + } + args = cs.getRgb(args, 0); + fn = OPS.setStrokeRGBColor; + break; + case OPS.shadingFill: var shadingRes = resources.get('Shading'); - if (!shadingRes) + if (!shadingRes) { error('No shading resource found'); + } var shading = shadingRes.get(args[0].name); - if (!shading) + if (!shading) { error('No shading object found'); + } - var shadingFill = Pattern.parseShading( - shading, null, xref, resources); + var shadingFill = Pattern.parseShading(shading, null, xref, + resources); var patternIR = shadingFill.getIR(); args = [patternIR]; fn = OPS.shadingFill; @@ -15123,74 +11359,225 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { var dictName = args[0]; var extGState = resources.get('ExtGState'); - if (!isDict(extGState) || !extGState.has(dictName.name)) + if (!isDict(extGState) || !extGState.has(dictName.name)) { break; + } var gState = extGState.get(dictName.name); - self.setGState(resources, gState, operatorList); - args = []; + return self.setGState(resources, gState, operatorList, xref, + stateManager).then(function() { + next(resolve, reject); + }, reject); + case OPS.moveTo: + case OPS.lineTo: + case OPS.curveTo: + case OPS.curveTo2: + case OPS.curveTo3: + case OPS.closePath: + self.buildPath(operatorList, fn, args); continue; - } // switch - + case OPS.rectangle: + self.buildPath(operatorList, fn, args); + continue; + } operatorList.addOp(fn, args); - } - - // some pdf don't close all restores inside object/form - // closing those for them - for (var i = 0, ii = preprocessor.savedStatesDepth; i < ii; i++) { - operatorList.addOp(OPS.restore, []); - } - - return operatorList; + } + if (stop) { + deferred.then(function () { + next(resolve, reject); + }); + return; + } + // Some PDFs don't close all restores inside object/form. + // Closing those for them. + for (i = 0, ii = preprocessor.savedStatesDepth; i < ii; i++) { + operatorList.addOp(OPS.restore, []); + } + resolve(); + }); }, - getTextContent: function PartialEvaluator_getTextContent( - stream, resources, state) { + getTextContent: function PartialEvaluator_getTextContent(stream, resources, + stateManager) { - var bidiTexts; + stateManager = (stateManager || new StateManager(new TextState())); + + var textContent = { + items: [], + styles: Object.create(null) + }; + var bidiTexts = textContent.items; var SPACE_FACTOR = 0.35; var MULTI_SPACE_FACTOR = 1.5; - var textState; - - if (!state) { - textState = new TextState(); - bidiTexts = []; - state = { - textState: textState, - bidiTexts: bidiTexts - }; - } else { - bidiTexts = state.bidiTexts; - textState = state.textState; - } var self = this; var xref = this.xref; - function handleSetFont(fontName, fontRef) { - return self.loadFont(fontName, fontRef, xref, resources, null); - } + resources = (xref.fetchIfRef(resources) || Dict.empty); - resources = xref.fetchIfRef(resources) || new Dict(); // The xobj is parsed iff it's needed, e.g. if there is a `DO` cmd. var xobjs = null; + var xobjsCache = {}; - var preprocessor = new EvaluatorPreprocessor(stream, xref); - var res = resources; + var preprocessor = new EvaluatorPreprocessor(stream, xref, stateManager); - var chunk = ''; - var font = null; - var charSpace = 0, wordSpace = 0; - var operation; - while ((operation = preprocessor.read())) { + var textState; + + function newTextChunk() { + var font = textState.font; + if (!(font.loadedName in textContent.styles)) { + textContent.styles[font.loadedName] = { + fontFamily: font.fallbackName, + ascent: font.ascent, + descent: font.descent, + vertical: font.vertical + }; + } + return { + // |str| is initially an array which we push individual chars to, and + // then runBidi() overwrites it with the final string. + str: [], + dir: null, + width: 0, + height: 0, + transform: null, + fontName: font.loadedName + }; + } + + function runBidi(textChunk) { + var str = textChunk.str.join(''); + var bidiResult = PDFJS.bidi(str, -1, textState.font.vertical); + textChunk.str = bidiResult.str; + textChunk.dir = bidiResult.dir; + return textChunk; + } + + function handleSetFont(fontName, fontRef) { + return self.loadFont(fontName, fontRef, xref, resources). + then(function (translated) { + textState.font = translated.font; + textState.fontMatrix = translated.font.fontMatrix || + FONT_IDENTITY_MATRIX; + }); + } + + function buildTextGeometry(chars, textChunk) { + var font = textState.font; + textChunk = textChunk || newTextChunk(); + if (!textChunk.transform) { + // 9.4.4 Text Space Details + var tsm = [textState.fontSize * textState.textHScale, 0, + 0, textState.fontSize, + 0, textState.textRise]; + var trm = textChunk.transform = Util.transform(textState.ctm, + Util.transform(textState.textMatrix, tsm)); + if (!font.vertical) { + textChunk.height = Math.sqrt(trm[2] * trm[2] + trm[3] * trm[3]); + } else { + textChunk.width = Math.sqrt(trm[0] * trm[0] + trm[1] * trm[1]); + } + } + var width = 0; + var height = 0; + var glyphs = font.charsToGlyphs(chars); + var defaultVMetrics = font.defaultVMetrics; + for (var i = 0; i < glyphs.length; i++) { + var glyph = glyphs[i]; + if (!glyph) { // Previous glyph was a space. + width += textState.wordSpacing * textState.textHScale; + continue; + } + var vMetricX = null; + var vMetricY = null; + var glyphWidth = null; + if (font.vertical) { + if (glyph.vmetric) { + glyphWidth = glyph.vmetric[0]; + vMetricX = glyph.vmetric[1]; + vMetricY = glyph.vmetric[2]; + } else { + glyphWidth = glyph.width; + vMetricX = glyph.width * 0.5; + vMetricY = defaultVMetrics[2]; + } + } else { + glyphWidth = glyph.width; + } + + var glyphUnicode = glyph.unicode; + if (NormalizedUnicodes[glyphUnicode] !== undefined) { + glyphUnicode = NormalizedUnicodes[glyphUnicode]; + } + glyphUnicode = reverseIfRtl(glyphUnicode); + + // The following will calculate the x and y of the individual glyphs. + // if (font.vertical) { + // tsm[4] -= vMetricX * Math.abs(textState.fontSize) * + // textState.fontMatrix[0]; + // tsm[5] -= vMetricY * textState.fontSize * + // textState.fontMatrix[0]; + // } + // var trm = Util.transform(textState.textMatrix, tsm); + // var pt = Util.applyTransform([trm[4], trm[5]], textState.ctm); + // var x = pt[0]; + // var y = pt[1]; + + var tx = 0; + var ty = 0; + if (!font.vertical) { + var w0 = glyphWidth * textState.fontMatrix[0]; + tx = (w0 * textState.fontSize + textState.charSpacing) * + textState.textHScale; + width += tx; + } else { + var w1 = glyphWidth * textState.fontMatrix[0]; + ty = w1 * textState.fontSize + textState.charSpacing; + height += ty; + } + textState.translateTextMatrix(tx, ty); + + textChunk.str.push(glyphUnicode); + } + + var a = textState.textLineMatrix[0]; + var b = textState.textLineMatrix[1]; + var scaleLineX = Math.sqrt(a * a + b * b); + a = textState.ctm[0]; + b = textState.ctm[1]; + var scaleCtmX = Math.sqrt(a * a + b * b); + if (!font.vertical) { + textChunk.width += width * scaleCtmX * scaleLineX; + } else { + textChunk.height += Math.abs(height * scaleCtmX * scaleLineX); + } + return textChunk; + } + + var timeSlotManager = new TimeSlotManager(); + + return new Promise(function next(resolve, reject) { + timeSlotManager.reset(); + var stop, operation = {}, args = []; + while (!(stop = timeSlotManager.check())) { + // The arguments parsed by read() are not used beyond this loop, so + // we can reuse the same array on every iteration, thus avoiding + // unnecessary allocations. + args.length = 0; + operation.args = args; + if (!(preprocessor.read(operation))) { + break; + } + textState = stateManager.state; var fn = operation.fn; - var args = operation.args; - switch (fn) { - // TODO: Add support for SAVE/RESTORE and XFORM here. + args = operation.args; + + switch (fn | 0) { case OPS.setFont: - font = handleSetFont(args[0].name).translated; textState.fontSize = args[1]; - break; + return handleSetFont(args[0].name).then(function() { + next(resolve, reject); + }, reject); case OPS.setTextRise: textState.textRise = args[0]; break; @@ -15201,146 +11588,176 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { textState.leading = args[0]; break; case OPS.moveText: - textState.translateTextMatrix(args[0], args[1]); + textState.translateTextLineMatrix(args[0], args[1]); + textState.textMatrix = textState.textLineMatrix.slice(); break; case OPS.setLeadingMoveText: textState.leading = -args[1]; - textState.translateTextMatrix(args[0], args[1]); + textState.translateTextLineMatrix(args[0], args[1]); + textState.textMatrix = textState.textLineMatrix.slice(); break; case OPS.nextLine: - textState.translateTextMatrix(0, -textState.leading); + textState.carriageReturn(); break; case OPS.setTextMatrix: - textState.setTextMatrix(args[0], args[1], - args[2], args[3], args[4], args[5]); + textState.setTextMatrix(args[0], args[1], args[2], args[3], + args[4], args[5]); + textState.setTextLineMatrix(args[0], args[1], args[2], args[3], + args[4], args[5]); break; case OPS.setCharSpacing: - charSpace = args[0]; + textState.charSpacing = args[0]; break; case OPS.setWordSpacing: - wordSpace = args[0]; + textState.wordSpacing = args[0]; break; case OPS.beginText: - textState.initialiseTextObj(); + textState.textMatrix = IDENTITY_MATRIX.slice(); + textState.textLineMatrix = IDENTITY_MATRIX.slice(); break; case OPS.showSpacedText: var items = args[0]; + var textChunk = newTextChunk(); + var offset; for (var j = 0, jj = items.length; j < jj; j++) { if (typeof items[j] === 'string') { - chunk += fontCharsToUnicode(items[j], font); - } else if (items[j] < 0 && font.spaceWidth > 0) { - var fakeSpaces = -items[j] / font.spaceWidth; - if (fakeSpaces > MULTI_SPACE_FACTOR) { - fakeSpaces = Math.round(fakeSpaces); - while (fakeSpaces--) { - chunk += ' '; + buildTextGeometry(items[j], textChunk); + } else { + var val = items[j] / 1000; + if (!textState.font.vertical) { + offset = -val * textState.fontSize * textState.textHScale * + textState.textMatrix[0]; + textState.translateTextMatrix(offset, 0); + textChunk.width += offset; + } else { + offset = -val * textState.fontSize * + textState.textMatrix[3]; + textState.translateTextMatrix(0, offset); + textChunk.height += offset; + } + if (items[j] < 0 && textState.font.spaceWidth > 0) { + var fakeSpaces = -items[j] / textState.font.spaceWidth; + if (fakeSpaces > MULTI_SPACE_FACTOR) { + fakeSpaces = Math.round(fakeSpaces); + while (fakeSpaces--) { + textChunk.str.push(' '); + } + } else if (fakeSpaces > SPACE_FACTOR) { + textChunk.str.push(' '); } - } else if (fakeSpaces > SPACE_FACTOR) { - chunk += ' '; } } } + bidiTexts.push(runBidi(textChunk)); break; case OPS.showText: - chunk += fontCharsToUnicode(args[0], font); + bidiTexts.push(runBidi(buildTextGeometry(args[0]))); break; case OPS.nextLineShowText: - // For search, adding a extra white space for line breaks would be - // better here, but that causes too much spaces in the - // text-selection divs. - chunk += fontCharsToUnicode(args[0], font); + textState.carriageReturn(); + bidiTexts.push(runBidi(buildTextGeometry(args[0]))); break; case OPS.nextLineSetSpacingShowText: - // Note comment in "'" - chunk += fontCharsToUnicode(args[2], font); + textState.wordSpacing = args[0]; + textState.charSpacing = args[1]; + textState.carriageReturn(); + bidiTexts.push(runBidi(buildTextGeometry(args[2]))); break; case OPS.paintXObject: - // Set the chunk such that the following if won't add something - // to the state. - chunk = ''; - if (args[0].code) { break; } if (!xobjs) { - xobjs = resources.get('XObject') || new Dict(); + xobjs = (resources.get('XObject') || Dict.empty); } var name = args[0].name; - var xobj = xobjs.get(name); - if (!xobj) + if (xobjsCache.key === name) { + if (xobjsCache.texts) { + Util.appendToArray(bidiTexts, xobjsCache.texts.items); + Util.extendObj(textContent.styles, xobjsCache.texts.styles); + } break; - assertWellFormed(isStream(xobj), 'XObject should be a stream'); + } + + var xobj = xobjs.get(name); + if (!xobj) { + break; + } + assert(isStream(xobj), 'XObject should be a stream'); var type = xobj.dict.get('Subtype'); - assertWellFormed( - isName(type), - 'XObject should have a Name subtype' - ); + assert(isName(type), + 'XObject should have a Name subtype'); - if ('Form' !== type.name) + if ('Form' !== type.name) { + xobjsCache.key = name; + xobjsCache.texts = null; break; + } - state = this.getTextContent( - xobj, - xobj.dict.get('Resources') || resources, - state - ); - break; + stateManager.save(); + var matrix = xobj.dict.get('Matrix'); + if (isArray(matrix) && matrix.length === 6) { + stateManager.transform(matrix); + } + + return self.getTextContent(xobj, + xobj.dict.get('Resources') || resources, stateManager). + then(function (formTextContent) { + Util.appendToArray(bidiTexts, formTextContent.items); + Util.extendObj(textContent.styles, formTextContent.styles); + stateManager.restore(); + + xobjsCache.key = name; + xobjsCache.texts = formTextContent; + + next(resolve, reject); + }, reject); case OPS.setGState: var dictName = args[0]; var extGState = resources.get('ExtGState'); - if (!isDict(extGState) || !extGState.has(dictName.name)) + if (!isDict(extGState) || !extGState.has(dictName.name)) { break; + } - var gsState = extGState.get(dictName.name); - - for (var i = 0; i < gsState.length; i++) { - if (gsState[i] === 'Font') { - font = handleSetFont(args[0].name).translated; + var gsStateMap = extGState.get(dictName.name); + var gsStateFont = null; + for (var key in gsStateMap) { + if (key === 'Font') { + assert(!gsStateFont); + gsStateFont = gsStateMap[key]; } } + if (gsStateFont) { + textState.fontSize = gsStateFont[1]; + return handleSetFont(gsStateFont[0]).then(function() { + next(resolve, reject); + }, reject); + } break; } // switch - - if (chunk !== '') { - var bidiText = PDFJS.bidi(chunk, -1, font.vertical); - var renderParams = textState.calcRenderParams(preprocessor.ctm); - bidiText.x = renderParams.renderMatrix[4] - (textState.fontSize * - renderParams.vScale * Math.sin(renderParams.angle)); - bidiText.y = renderParams.renderMatrix[5] + (textState.fontSize * - renderParams.vScale * Math.cos(renderParams.angle)); - var fontHeight = textState.fontSize * renderParams.vScale; - var fontAscent = font.ascent ? font.ascent * fontHeight : - font.descent ? (1 + font.descent) * fontHeight : fontHeight; - bidiText.x = renderParams.renderMatrix[4] - (fontAscent * - Math.sin(renderParams.angle)); - bidiText.y = renderParams.renderMatrix[5] + (fontAscent * - Math.cos(renderParams.angle)); - if (bidiText.dir == 'ttb') { - bidiText.x += renderParams.vScale / 2; - bidiText.y -= renderParams.vScale; - } - bidiTexts.push(bidiText); - - chunk = ''; - } - } // while - - return state; + } // while + if (stop) { + deferred.then(function () { + next(resolve, reject); + }); + return; + } + resolve(textContent); + }); }, extractDataStructures: function partialEvaluatorExtractDataStructures(dict, baseDict, xref, properties) { // 9.10.2 - var toUnicode = dict.get('ToUnicode') || - baseDict.get('ToUnicode'); - if (toUnicode) - properties.toUnicode = this.readToUnicode(toUnicode, xref, properties); - + var toUnicode = (dict.get('ToUnicode') || baseDict.get('ToUnicode')); + if (toUnicode) { + properties.toUnicode = this.readToUnicode(toUnicode); + } if (properties.composite) { // CIDSystemInfo helps to match CID to glyphs var cidSystemInfo = dict.get('CIDSystemInfo'); @@ -15353,84 +11770,91 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { } var cidToGidMap = dict.get('CIDToGIDMap'); - if (isStream(cidToGidMap)) + if (isStream(cidToGidMap)) { properties.cidToGidMap = this.readCidToGidMap(cidToGidMap); + } } // Based on 9.6.6 of the spec the encoding can come from multiple places - // but should be prioritized in the following order: - // 1. Encoding dictionary - // 2. Encoding within font file (Type1 or Type1C) - // 3. Default (depends on font type) - // Differences applied to the above. - // Note: we don't fill in the encoding from the font file(2) here but use - // the flag overridableEncoding to signal that the font can override the - // encoding if it has one built in. - var overridableEncoding = true; - var hasEncoding = false; - var flags = properties.flags; + // and depends on the font type. The base encoding and differences are + // read here, but the encoding that is actually used is chosen during + // glyph mapping in the font. + // TODO: Loading the built in encoding in the font would allow the + // differences to be merged in here not require us to hold on to it. var differences = []; - var baseEncoding = properties.type === 'TrueType' ? - Encodings.WinAnsiEncoding : - Encodings.StandardEncoding; - // The Symbolic attribute can be misused for regular fonts - // Heuristic: we have to check if the font is a standard one and has - // Symbolic font name - if (!!(flags & FontFlags.Symbolic)) { - baseEncoding = !properties.file && /Symbol/i.test(properties.name) ? - Encodings.SymbolSetEncoding : Encodings.MacRomanEncoding; - } + var baseEncodingName = null; + var encoding; if (dict.has('Encoding')) { - var encoding = dict.get('Encoding'); + encoding = dict.get('Encoding'); if (isDict(encoding)) { - var baseName = encoding.get('BaseEncoding'); - if (baseName) { - overridableEncoding = false; - hasEncoding = true; - baseEncoding = Encodings[baseName.name]; - } - + baseEncodingName = encoding.get('BaseEncoding'); + baseEncodingName = (isName(baseEncodingName) ? + baseEncodingName.name : null); // Load the differences between the base and original if (encoding.has('Differences')) { - hasEncoding = true; var diffEncoding = encoding.get('Differences'); var index = 0; for (var j = 0, jj = diffEncoding.length; j < jj; j++) { var data = diffEncoding[j]; - if (isNum(data)) + if (isNum(data)) { index = data; - else + } else { differences[index++] = data.name; + } } } } else if (isName(encoding)) { - overridableEncoding = false; - hasEncoding = true; - baseEncoding = Encodings[encoding.name]; + baseEncodingName = encoding.name; } else { error('Encoding is not a Name nor a Dict'); } + // According to table 114 if the encoding is a named encoding it must be + // one of these predefined encodings. + if ((baseEncodingName !== 'MacRomanEncoding' && + baseEncodingName !== 'MacExpertEncoding' && + baseEncodingName !== 'WinAnsiEncoding')) { + baseEncodingName = null; + } + } + + if (baseEncodingName) { + properties.defaultEncoding = Encodings[baseEncodingName].slice(); + } else { + encoding = (properties.type === 'TrueType' ? + Encodings.WinAnsiEncoding : Encodings.StandardEncoding); + // The Symbolic attribute can be misused for regular fonts + // Heuristic: we have to check if the font is a standard one also + if (!!(properties.flags & FontFlags.Symbolic)) { + encoding = Encodings.MacRomanEncoding; + if (!properties.file) { + if (/Symbol/i.test(properties.name)) { + encoding = Encodings.SymbolSetEncoding; + } else if (/Dingbats/i.test(properties.name)) { + encoding = Encodings.ZapfDingbatsEncoding; + } + } + } + properties.defaultEncoding = encoding; } properties.differences = differences; - properties.baseEncoding = baseEncoding; - properties.hasEncoding = hasEncoding; - properties.overridableEncoding = overridableEncoding; + properties.baseEncodingName = baseEncodingName; + properties.dict = dict; }, - readToUnicode: function PartialEvaluator_readToUnicode(toUnicode, xref, - properties) { - var cmapObj = toUnicode; - var charToUnicode = []; + readToUnicode: function PartialEvaluator_readToUnicode(toUnicode) { + var cmap, cmapObj = toUnicode; if (isName(cmapObj)) { - var isIdentityMap = cmapObj.name.substr(0, 9) == 'Identity-'; - if (!isIdentityMap) - error('ToUnicode file cmap translation not implemented'); + cmap = CMapFactory.create(cmapObj, + { url: PDFJS.cMapUrl, packed: PDFJS.cMapPacked }, null).getMap(); + return new ToUnicodeMap(cmap); } else if (isStream(cmapObj)) { - var cmap = CMapFactory.create(cmapObj).map; + cmap = CMapFactory.create(cmapObj, + { url: PDFJS.cMapUrl, packed: PDFJS.cMapPacked }, null).getMap(); // Convert UTF-16BE - for (var i in cmap) { - var token = cmap[i]; + // NOTE: cmap can be a sparse array, so use forEach instead of for(;;) + // to iterate over all keys. + cmap.forEach(function(token, i) { var str = []; for (var k = 0; k < token.length; k += 2) { var w1 = (token.charCodeAt(k) << 8) | token.charCodeAt(k + 1); @@ -15443,11 +11867,12 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { str.push(((w1 & 0x3ff) << 10) + (w2 & 0x3ff) + 0x10000); } cmap[i] = String.fromCharCode.apply(String, str); - } - return cmap; + }); + return new ToUnicodeMap(cmap); } - return charToUnicode; + return null; }, + readCidToGidMap: function PartialEvaluator_readCidToGidMap(cidToGidStream) { // Extract the encoding from the CIDToGIDMap var glyphsData = cidToGidStream.getBytes(); @@ -15456,98 +11881,107 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { var result = []; for (var j = 0, jj = glyphsData.length; j < jj; j++) { var glyphID = (glyphsData[j++] << 8) | glyphsData[j]; - if (glyphID === 0) + if (glyphID === 0) { continue; - + } var code = j >> 1; result[code] = glyphID; } return result; }, - extractWidths: function PartialEvaluator_extractWidths(dict, - xref, - descriptor, - properties) { + extractWidths: function PartialEvaluator_extractWidths(dict, xref, + descriptor, + properties) { var glyphsWidths = []; var defaultWidth = 0; var glyphsVMetrics = []; var defaultVMetrics; + var i, ii, j, jj, start, code, widths; if (properties.composite) { defaultWidth = dict.get('DW') || 1000; - var widths = dict.get('W'); + widths = dict.get('W'); if (widths) { - for (var i = 0, ii = widths.length; i < ii; i++) { - var start = widths[i++]; - var code = xref.fetchIfRef(widths[i]); + for (i = 0, ii = widths.length; i < ii; i++) { + start = widths[i++]; + code = xref.fetchIfRef(widths[i]); if (isArray(code)) { - for (var j = 0, jj = code.length; j < jj; j++) + for (j = 0, jj = code.length; j < jj; j++) { glyphsWidths[start++] = code[j]; + } } else { var width = widths[++i]; - for (var j = start; j <= code; j++) + for (j = start; j <= code; j++) { glyphsWidths[j] = width; + } } } } if (properties.vertical) { - var vmetrics = dict.get('DW2') || [880, -1000]; + var vmetrics = (dict.get('DW2') || [880, -1000]); defaultVMetrics = [vmetrics[1], defaultWidth * 0.5, vmetrics[0]]; vmetrics = dict.get('W2'); if (vmetrics) { - for (var i = 0, ii = vmetrics.length; i < ii; i++) { - var start = vmetrics[i++]; - var code = xref.fetchIfRef(vmetrics[i]); + for (i = 0, ii = vmetrics.length; i < ii; i++) { + start = vmetrics[i++]; + code = xref.fetchIfRef(vmetrics[i]); if (isArray(code)) { - for (var j = 0, jj = code.length; j < jj; j++) + for (j = 0, jj = code.length; j < jj; j++) { glyphsVMetrics[start++] = [code[j++], code[j++], code[j]]; + } } else { var vmetric = [vmetrics[++i], vmetrics[++i], vmetrics[++i]]; - for (var j = start; j <= code; j++) + for (j = start; j <= code; j++) { glyphsVMetrics[j] = vmetric; + } } } } } } else { var firstChar = properties.firstChar; - var widths = dict.get('Widths'); + widths = dict.get('Widths'); if (widths) { - var j = firstChar; - for (var i = 0, ii = widths.length; i < ii; i++) + j = firstChar; + for (i = 0, ii = widths.length; i < ii; i++) { glyphsWidths[j++] = widths[i]; - defaultWidth = parseFloat(descriptor.get('MissingWidth')) || 0; + } + defaultWidth = (parseFloat(descriptor.get('MissingWidth')) || 0); } else { // Trying get the BaseFont metrics (see comment above). var baseFontName = dict.get('BaseFont'); if (isName(baseFontName)) { var metrics = this.getBaseFontMetrics(baseFontName.name); - glyphsWidths = metrics.widths; + glyphsWidths = this.buildCharCodeToWidth(metrics.widths, + properties); defaultWidth = metrics.defaultWidth; } } } // Heuristic: detection of monospace font by checking all non-zero widths - var isMonospace = true, firstWidth = defaultWidth; + var isMonospace = true; + var firstWidth = defaultWidth; for (var glyph in glyphsWidths) { var glyphWidth = glyphsWidths[glyph]; - if (!glyphWidth) + if (!glyphWidth) { continue; + } if (!firstWidth) { firstWidth = glyphWidth; continue; } - if (firstWidth != glyphWidth) { + if (firstWidth !== glyphWidth) { isMonospace = false; break; } } - if (isMonospace) + if (isMonospace) { properties.flags |= FontFlags.FixedPitch; + } properties.defaultWidth = defaultWidth; properties.widths = glyphsWidths; @@ -15556,17 +11990,17 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { }, isSerifFont: function PartialEvaluator_isSerifFont(baseFontName) { - // Simulating descriptor flags attribute var fontNameWoStyle = baseFontName.split('-')[0]; return (fontNameWoStyle in serifFonts) || - (fontNameWoStyle.search(/serif/gi) !== -1); + (fontNameWoStyle.search(/serif/gi) !== -1); }, getBaseFontMetrics: function PartialEvaluator_getBaseFontMetrics(name) { - var defaultWidth = 0, widths = [], monospace = false; - - var lookupName = stdFontMap[name] || name; + var defaultWidth = 0; + var widths = []; + var monospace = false; + var lookupName = (stdFontMap[name] || name); if (!(lookupName in Metrics)) { // Use default fonts for looking up font metrics if the passed @@ -15593,44 +12027,113 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { }; }, - translateFont: function PartialEvaluator_translateFont(dict, - xref) { + buildCharCodeToWidth: + function PartialEvaluator_bulildCharCodeToWidth(widthsByGlyphName, + properties) { + var widths = Object.create(null); + var differences = properties.differences; + var encoding = properties.defaultEncoding; + for (var charCode = 0; charCode < 256; charCode++) { + if (charCode in differences && + widthsByGlyphName[differences[charCode]]) { + widths[charCode] = widthsByGlyphName[differences[charCode]]; + continue; + } + if (charCode in encoding && widthsByGlyphName[encoding[charCode]]) { + widths[charCode] = widthsByGlyphName[encoding[charCode]]; + continue; + } + } + return widths; + }, + + preEvaluateFont: function PartialEvaluator_preEvaluateFont(dict, xref) { var baseDict = dict; var type = dict.get('Subtype'); - assertWellFormed(isName(type), 'invalid font Subtype'); + assert(isName(type), 'invalid font Subtype'); var composite = false; - if (type.name == 'Type0') { + var uint8array; + if (type.name === 'Type0') { // If font is a composite // - get the descendant font // - set the type according to the descendant font // - get the FontDescriptor from the descendant font var df = dict.get('DescendantFonts'); - if (!df) + if (!df) { error('Descendant fonts are not specified'); - - dict = isArray(df) ? xref.fetchIfRef(df[0]) : df; + } + dict = (isArray(df) ? xref.fetchIfRef(df[0]) : df); type = dict.get('Subtype'); - assertWellFormed(isName(type), 'invalid font Subtype'); + assert(isName(type), 'invalid font Subtype'); composite = true; } - var maxCharIndex = composite ? 0xFFFF : 0xFF; var descriptor = dict.get('FontDescriptor'); + if (descriptor) { + var hash = new MurmurHash3_64(); + var encoding = baseDict.getRaw('Encoding'); + if (isName(encoding)) { + hash.update(encoding.name); + } else if (isRef(encoding)) { + hash.update(encoding.num + '_' + encoding.gen); + } + + var toUnicode = dict.get('ToUnicode') || baseDict.get('ToUnicode'); + if (isStream(toUnicode)) { + var stream = toUnicode.str || toUnicode; + uint8array = stream.buffer ? + new Uint8Array(stream.buffer.buffer, 0, stream.bufferLength) : + new Uint8Array(stream.bytes.buffer, + stream.start, stream.end - stream.start); + hash.update(uint8array); + + } else if (isName(toUnicode)) { + hash.update(toUnicode.name); + } + + var widths = dict.get('Widths') || baseDict.get('Widths'); + if (widths) { + uint8array = new Uint8Array(new Uint32Array(widths).buffer); + hash.update(uint8array); + } + } + + return { + descriptor: descriptor, + dict: dict, + baseDict: baseDict, + composite: composite, + type: type.name, + hash: hash ? hash.hexdigest() : '' + }; + }, + + translateFont: function PartialEvaluator_translateFont(preEvaluatedFont, + xref) { + var baseDict = preEvaluatedFont.baseDict; + var dict = preEvaluatedFont.dict; + var composite = preEvaluatedFont.composite; + var descriptor = preEvaluatedFont.descriptor; + var type = preEvaluatedFont.type; + var maxCharIndex = (composite ? 0xFFFF : 0xFF); + var properties; + if (!descriptor) { - if (type.name == 'Type3') { + if (type === 'Type3') { // FontDescriptor is only required for Type3 fonts when the document // is a tagged pdf. Create a barbebones one to get by. - descriptor = new Dict(); - descriptor.set('FontName', new Name(type.name)); + descriptor = new Dict(null); + descriptor.set('FontName', Name.get(type)); } else { // Before PDF 1.5 if the font was one of the base 14 fonts, having a // FontDescriptor was not required. // This case is here for compatibility. var baseFontName = dict.get('BaseFont'); - if (!isName(baseFontName)) + if (!isName(baseFontName)) { error('Base font is not specified'); + } // Using base font name as a font name. baseFontName = baseFontName.name.replace(/[,_]/g, '-'); @@ -15638,14 +12141,14 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { // Simulating descriptor flags attribute var fontNameWoStyle = baseFontName.split('-')[0]; - var flags = ( - this.isSerifFont(fontNameWoStyle) ? FontFlags.Serif : 0) | + var flags = + (this.isSerifFont(fontNameWoStyle) ? FontFlags.Serif : 0) | (metrics.monospace ? FontFlags.FixedPitch : 0) | (symbolsFonts[fontNameWoStyle] ? FontFlags.Symbolic : - FontFlags.Nonsymbolic); + FontFlags.Nonsymbolic); - var properties = { - type: type.name, + properties = { + type: type, name: baseFontName, widths: metrics.widths, defaultWidth: metrics.defaultWidth, @@ -15654,7 +12157,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { lastChar: maxCharIndex }; this.extractDataStructures(dict, dict, xref, properties); - + properties.widths = this.buildCharCodeToWidth(metrics.widths, + properties); return new Font(baseFontName, null, properties); } } @@ -15664,47 +12168,52 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { // to ignore this rule when a variant of a standart font is used. // TODO Fill the width array depending on which of the base font this is // a variant. - var firstChar = dict.get('FirstChar') || 0; - var lastChar = dict.get('LastChar') || maxCharIndex; + var firstChar = (dict.get('FirstChar') || 0); + var lastChar = (dict.get('LastChar') || maxCharIndex); var fontName = descriptor.get('FontName'); var baseFont = dict.get('BaseFont'); - // Some bad pdf's have a string as the font name. + // Some bad PDFs have a string as the font name. if (isString(fontName)) { - fontName = new Name(fontName); + fontName = Name.get(fontName); } if (isString(baseFont)) { - baseFont = new Name(baseFont); + baseFont = Name.get(baseFont); } - if (type.name !== 'Type3') { + if (type !== 'Type3') { var fontNameStr = fontName && fontName.name; var baseFontStr = baseFont && baseFont.name; if (fontNameStr !== baseFontStr) { info('The FontDescriptor\'s FontName is "' + fontNameStr + '" but should be the same as the Font\'s BaseFont "' + baseFontStr + '"'); + // Workaround for cases where e.g. fontNameStr = 'Arial' and + // baseFontStr = 'Arial,Bold' (needed when no font file is embedded). + if (fontNameStr && baseFontStr && + baseFontStr.indexOf(fontNameStr) === 0) { + fontName = baseFont; + } } } - fontName = fontName || baseFont; + fontName = (fontName || baseFont); - assertWellFormed(isName(fontName), 'invalid font name'); + assert(isName(fontName), 'invalid font name'); var fontFile = descriptor.get('FontFile', 'FontFile2', 'FontFile3'); if (fontFile) { if (fontFile.dict) { var subtype = fontFile.dict.get('Subtype'); - if (subtype) + if (subtype) { subtype = subtype.name; - + } var length1 = fontFile.dict.get('Length1'); - var length2 = fontFile.dict.get('Length2'); } } - var properties = { - type: type.name, + properties = { + type: type, name: fontName.name, subtype: subtype, file: fontFile, @@ -15714,9 +12223,9 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { composite: composite, wideChars: composite, fixedPitch: false, - fontMatrix: dict.get('FontMatrix') || FONT_IDENTITY_MATRIX, + fontMatrix: (dict.get('FontMatrix') || FONT_IDENTITY_MATRIX), firstChar: firstChar || 0, - lastChar: lastChar || maxCharIndex, + lastChar: (lastChar || maxCharIndex), bbox: descriptor.get('FontBBox'), ascent: descriptor.get('Ascent'), descent: descriptor.get('Descent'), @@ -15731,204 +12240,133 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { var cidEncoding = baseDict.get('Encoding'); if (isName(cidEncoding)) { properties.cidEncoding = cidEncoding.name; - properties.vertical = /-V$/.test(cidEncoding.name); } - properties.cmap = CMapFactory.create(cidEncoding); + properties.cMap = CMapFactory.create(cidEncoding, + { url: PDFJS.cMapUrl, packed: PDFJS.cMapPacked }, null); + properties.vertical = properties.cMap.vertical; } - this.extractWidths(dict, xref, descriptor, properties); this.extractDataStructures(dict, baseDict, xref, properties); + this.extractWidths(dict, xref, descriptor, properties); - if (type.name === 'Type3') { - properties.coded = true; + if (type === 'Type3') { + properties.isType3Font = true; } return new Font(fontName.name, fontFile, properties); } }; - PartialEvaluator.optimizeQueue = - function PartialEvaluator_optimizeQueue(queue) { - - function squash(array, index, howMany, element) { - if (isArray(array)) { - array.splice(index, howMany, element); - } else { - // Replace the element. - array[index] = element; - // Shift everything after the element up. - var sub = array.subarray(index + howMany); - array.set(sub, index + 1); - } - } - - var fnArray = queue.fnArray, argsArray = queue.argsArray; - // grouping paintInlineImageXObject's into paintInlineImageXObjectGroup - // searching for (save, transform, paintInlineImageXObject, restore)+ - var MIN_IMAGES_IN_INLINE_IMAGES_BLOCK = 10; - var MAX_IMAGES_IN_INLINE_IMAGES_BLOCK = 200; - var MAX_WIDTH = 1000; - var IMAGE_PADDING = 1; - for (var i = 0, ii = argsArray.length; i < ii; i++) { - if (fnArray[i] === OPS.paintInlineImageXObject && - fnArray[i - 2] === OPS.save && fnArray[i - 1] === OPS.transform && - fnArray[i + 1] === OPS.restore) { - var j = i - 2; - for (i += 2; i < ii && fnArray[i - 4] === fnArray[i]; i++) { - } - var count = Math.min((i - j) >> 2, - MAX_IMAGES_IN_INLINE_IMAGES_BLOCK); - if (count < MIN_IMAGES_IN_INLINE_IMAGES_BLOCK) { - continue; - } - // assuming that heights of those image is too small (~1 pixel) - // packing as much as possible by lines - var maxX = 0; - var map = [], maxLineHeight = 0; - var currentX = IMAGE_PADDING, currentY = IMAGE_PADDING; - for (var q = 0; q < count; q++) { - var transform = argsArray[j + (q << 2) + 1]; - var img = argsArray[j + (q << 2) + 2][0]; - if (currentX + img.width > MAX_WIDTH) { - // starting new line - maxX = Math.max(maxX, currentX); - currentY += maxLineHeight + 2 * IMAGE_PADDING; - currentX = 0; - maxLineHeight = 0; - } - map.push({ - transform: transform, - x: currentX, y: currentY, - w: img.width, h: img.height - }); - currentX += img.width + 2 * IMAGE_PADDING; - maxLineHeight = Math.max(maxLineHeight, img.height); - } - var imgWidth = Math.max(maxX, currentX) + IMAGE_PADDING; - var imgHeight = currentY + maxLineHeight + IMAGE_PADDING; - var imgData = new Uint8Array(imgWidth * imgHeight * 4); - var imgRowSize = imgWidth << 2; - for (var q = 0; q < count; q++) { - var data = argsArray[j + (q << 2) + 2][0].data; - // copy image by lines and extends pixels into padding - var rowSize = map[q].w << 2; - var dataOffset = 0; - var offset = (map[q].x + map[q].y * imgWidth) << 2; - imgData.set( - data.subarray(0, rowSize), offset - imgRowSize); - for (var k = 0, kk = map[q].h; k < kk; k++) { - imgData.set( - data.subarray(dataOffset, dataOffset + rowSize), offset); - dataOffset += rowSize; - offset += imgRowSize; - } - imgData.set( - data.subarray(dataOffset - rowSize, dataOffset), offset); - while (offset >= 0) { - data[offset - 4] = data[offset]; - data[offset - 3] = data[offset + 1]; - data[offset - 2] = data[offset + 2]; - data[offset - 1] = data[offset + 3]; - data[offset + rowSize] = data[offset + rowSize - 4]; - data[offset + rowSize + 1] = data[offset + rowSize - 3]; - data[offset + rowSize + 2] = data[offset + rowSize - 2]; - data[offset + rowSize + 3] = data[offset + rowSize - 1]; - offset -= imgRowSize; - } - } - // replacing queue items - squash(fnArray, j, count * 4, OPS.paintInlineImageXObjectGroup); - argsArray.splice(j, count * 4, - [{width: imgWidth, height: imgHeight, data: imgData}, map]); - i = j; - ii = argsArray.length; - } - } - // grouping paintImageMaskXObject's into paintImageMaskXObjectGroup - // searching for (save, transform, paintImageMaskXObject, restore)+ - var MIN_IMAGES_IN_MASKS_BLOCK = 10; - var MAX_IMAGES_IN_MASKS_BLOCK = 100; - for (var i = 0, ii = argsArray.length; i < ii; i++) { - if (fnArray[i] === OPS.paintImageMaskXObject && - fnArray[i - 2] === OPS.save && fnArray[i - 1] === OPS.transform && - fnArray[i + 1] === OPS.restore) { - var j = i - 2; - for (i += 2; i < ii && fnArray[i - 4] === fnArray[i]; i++) { - } - var count = Math.min((i - j) >> 2, - MAX_IMAGES_IN_MASKS_BLOCK); - if (count < MIN_IMAGES_IN_MASKS_BLOCK) { - continue; - } - var images = []; - for (var q = 0; q < count; q++) { - var transform = argsArray[j + (q << 2) + 1]; - var maskParams = argsArray[j + (q << 2) + 2][0]; - images.push({data: maskParams.data, width: maskParams.width, - height: maskParams.height, transform: transform}); - } - // replacing queue items - squash(fnArray, j, count * 4, OPS.paintImageMaskXObjectGroup); - argsArray.splice(j, count * 4, [images]); - i = j; - ii = argsArray.length; - } - } - }; - return PartialEvaluator; })(); -var OperatorList = (function OperatorListClosure() { - var CHUNK_SIZE = 100; - - function getTransfers(queue) { - var transfers = []; - var fnArray = queue.fnArray, argsArray = queue.argsArray; - for (var i = 0, ii = queue.length; i < ii; i++) { - switch (fnArray[i]) { - case OPS.paintInlineImageXObject: - case OPS.paintInlineImageXObjectGroup: - case OPS.paintImageMaskXObject: - var arg = argsArray[i][0]; // first param in imgData - transfers.push(arg.data.buffer); - break; - } +var TranslatedFont = (function TranslatedFontClosure() { + function TranslatedFont(loadedName, font, dict) { + this.loadedName = loadedName; + this.font = font; + this.dict = dict; + this.type3Loaded = null; + this.sent = false; + } + TranslatedFont.prototype = { + send: function (handler) { + if (this.sent) { + return; } - return transfers; + var fontData = this.font.exportData(); + handler.send('commonobj', [ + this.loadedName, + 'Font', + fontData + ]); + this.sent = true; + }, + loadType3Data: function (evaluator, resources, parentOperatorList) { + assert(this.font.isType3Font); + + if (this.type3Loaded) { + return this.type3Loaded; + } + + var translatedFont = this.font; + var loadCharProcsPromise = Promise.resolve(); + var charProcs = this.dict.get('CharProcs').getAll(); + var fontResources = this.dict.get('Resources') || resources; + var charProcKeys = Object.keys(charProcs); + var charProcOperatorList = {}; + for (var i = 0, n = charProcKeys.length; i < n; ++i) { + loadCharProcsPromise = loadCharProcsPromise.then(function (key) { + var glyphStream = charProcs[key]; + var operatorList = new OperatorList(); + return evaluator.getOperatorList(glyphStream, fontResources, + operatorList).then(function () { + charProcOperatorList[key] = operatorList.getIR(); + + // Add the dependencies to the parent operator list so they are + // resolved before sub operator list is executed synchronously. + parentOperatorList.addDependencies(operatorList.dependencies); + }, function (reason) { + warn('Type3 font resource \"' + key + '\" is not available'); + var operatorList = new OperatorList(); + charProcOperatorList[key] = operatorList.getIR(); + }); + }.bind(this, charProcKeys[i])); + } + this.type3Loaded = loadCharProcsPromise.then(function () { + translatedFont.charProcOperatorList = charProcOperatorList; + }); + return this.type3Loaded; } + }; + return TranslatedFont; +})(); +var OperatorList = (function OperatorListClosure() { + var CHUNK_SIZE = 1000; + var CHUNK_SIZE_ABOUT = CHUNK_SIZE - 5; // close to chunk size - function OperatorList(messageHandler, pageIndex) { + function getTransfers(queue) { + var transfers = []; + var fnArray = queue.fnArray, argsArray = queue.argsArray; + for (var i = 0, ii = queue.length; i < ii; i++) { + switch (fnArray[i]) { + case OPS.paintInlineImageXObject: + case OPS.paintInlineImageXObjectGroup: + case OPS.paintImageMaskXObject: + var arg = argsArray[i][0]; // first param in imgData + if (!arg.cached) { + transfers.push(arg.data.buffer); + } + break; + } + } + return transfers; + } + + function OperatorList(intent, messageHandler, pageIndex) { this.messageHandler = messageHandler; - // When there isn't a message handler the fn array needs to be able to grow - // since we can't flush the operators. - if (messageHandler) { - this.fnArray = new Uint8Array(CHUNK_SIZE); - } else { - this.fnArray = []; - } + this.fnArray = []; this.argsArray = []; - this.dependencies = {}, + this.dependencies = {}; this.pageIndex = pageIndex; - this.fnIndex = 0; + this.intent = intent; } OperatorList.prototype = { - get length() { return this.argsArray.length; }, addOp: function(fn, args) { + this.fnArray.push(fn); + this.argsArray.push(args); if (this.messageHandler) { - this.fnArray[this.fnIndex++] = fn; - this.argsArray.push(args); - if (this.fnIndex >= CHUNK_SIZE) { + if (this.fnArray.length >= CHUNK_SIZE) { + this.flush(); + } else if (this.fnArray.length >= CHUNK_SIZE_ABOUT && + (fn === OPS.restore || fn === OPS.endText)) { + // heuristic to flush on boundary of restore or endText this.flush(); } - } else { - this.fnArray.push(fn); - this.argsArray.push(args); } }, @@ -15962,7 +12400,9 @@ var OperatorList = (function OperatorListClosure() { }, flush: function(lastChunk) { - PartialEvaluator.optimizeQueue(this); + if (this.intent !== 'oplist') { + new QueueOptimizer().optimize(this); + } var transfers = getTransfers(this); this.messageHandler.send('RenderPageChunk', { operatorList: { @@ -15971,76 +12411,105 @@ var OperatorList = (function OperatorListClosure() { lastChunk: lastChunk, length: this.length }, - pageIndex: this.pageIndex - }, null, transfers); - this.dependencies = []; - this.fnIndex = 0; - this.argsArray = []; + pageIndex: this.pageIndex, + intent: this.intent + }, transfers); + this.dependencies = {}; + this.fnArray.length = 0; + this.argsArray.length = 0; } }; return OperatorList; })(); +var StateManager = (function StateManagerClosure() { + function StateManager(initialState) { + this.state = initialState; + this.stateStack = []; + } + StateManager.prototype = { + save: function () { + var old = this.state; + this.stateStack.push(this.state); + this.state = old.clone(); + }, + restore: function () { + var prev = this.stateStack.pop(); + if (prev) { + this.state = prev; + } + }, + transform: function (args) { + this.state.ctm = Util.transform(this.state.ctm, args); + } + }; + return StateManager; +})(); + var TextState = (function TextStateClosure() { function TextState() { + this.ctm = new Float32Array(IDENTITY_MATRIX); this.fontSize = 0; - this.textMatrix = [1, 0, 0, 1, 0, 0]; - this.stateStack = []; - //textState variables + this.font = null; + this.fontMatrix = FONT_IDENTITY_MATRIX; + this.textMatrix = IDENTITY_MATRIX.slice(); + this.textLineMatrix = IDENTITY_MATRIX.slice(); + this.charSpacing = 0; + this.wordSpacing = 0; this.leading = 0; this.textHScale = 1; this.textRise = 0; } + TextState.prototype = { - initialiseTextObj: function TextState_initialiseTextObj() { - var m = this.textMatrix; - m[0] = 1, m[1] = 0, m[2] = 0, m[3] = 1, m[4] = 0, m[5] = 0; - }, setTextMatrix: function TextState_setTextMatrix(a, b, c, d, e, f) { var m = this.textMatrix; - m[0] = a, m[1] = b, m[2] = c, m[3] = d, m[4] = e, m[5] = f; + m[0] = a; m[1] = b; m[2] = c; m[3] = d; m[4] = e; m[5] = f; + }, + setTextLineMatrix: function TextState_setTextMatrix(a, b, c, d, e, f) { + var m = this.textLineMatrix; + m[0] = a; m[1] = b; m[2] = c; m[3] = d; m[4] = e; m[5] = f; }, translateTextMatrix: function TextState_translateTextMatrix(x, y) { var m = this.textMatrix; m[4] = m[0] * x + m[2] * y + m[4]; m[5] = m[1] * x + m[3] * y + m[5]; }, - calcRenderParams: function TextState_calcRenderingParams(cm) { - var tm = this.textMatrix; - var a = this.fontSize; - var b = a * this.textHScale; - var c = this.textRise; - var vScale = Math.sqrt((tm[2] * tm[2]) + (tm[3] * tm[3])); - var angle = Math.atan2(tm[1], tm[0]); - var m0 = tm[0] * cm[0] + tm[1] * cm[2]; - var m1 = tm[0] * cm[1] + tm[1] * cm[3]; - var m2 = tm[2] * cm[0] + tm[3] * cm[2]; - var m3 = tm[2] * cm[1] + tm[3] * cm[3]; - var m4 = tm[4] * cm[0] + tm[5] * cm[2] + cm[4]; - var m5 = tm[4] * cm[1] + tm[5] * cm[3] + cm[5]; - var renderMatrix = [ - b * m0, - b * m1, - a * m2, - a * m3, - c * m2 + m4, - c * m3 + m5 - ]; - return { - renderMatrix: renderMatrix, - vScale: vScale, - angle: angle - }; + translateTextLineMatrix: function TextState_translateTextMatrix(x, y) { + var m = this.textLineMatrix; + m[4] = m[0] * x + m[2] * y + m[4]; + m[5] = m[1] * x + m[3] * y + m[5]; }, + calcRenderMatrix: function TextState_calcRendeMatrix(ctm) { + // 9.4.4 Text Space Details + var tsm = [this.fontSize * this.textHScale, 0, + 0, this.fontSize, + 0, this.textRise]; + return Util.transform(ctm, Util.transform(this.textMatrix, tsm)); + }, + carriageReturn: function TextState_carriageReturn() { + this.translateTextLineMatrix(0, -this.leading); + this.textMatrix = this.textLineMatrix.slice(); + }, + clone: function TextState_clone() { + var clone = Object.create(this); + clone.textMatrix = this.textMatrix.slice(); + clone.textLineMatrix = this.textLineMatrix.slice(); + clone.fontMatrix = this.fontMatrix.slice(); + return clone; + } }; return TextState; })(); var EvalState = (function EvalStateClosure() { function EvalState() { + this.ctm = new Float32Array(IDENTITY_MATRIX); this.font = null; this.textRenderingMode = TextRenderingMode.FILL; + this.fillColorSpace = ColorSpace.singletons.gray; + this.strokeColorSpace = ColorSpace.singletons.gray; } EvalState.prototype = { clone: function CanvasExtraState_clone() { @@ -16050,7 +12519,7 @@ var EvalState = (function EvalStateClosure() { return EvalState; })(); -var EvaluatorPreprocessor = (function EvaluatorPreprocessor() { +var EvaluatorPreprocessor = (function EvaluatorPreprocessorClosure() { // Specifies properties for each command // // If variableArgs === true: [0, `numArgs`] expected @@ -16110,7 +12579,7 @@ var EvaluatorPreprocessor = (function EvaluatorPreprocessor() { TJ: { id: OPS.showSpacedText, numArgs: 1, variableArgs: false }, '\'': { id: OPS.nextLineShowText, numArgs: 1, variableArgs: false }, '"': { id: OPS.nextLineSetSpacingShowText, numArgs: 3, - variableArgs: false }, + variableArgs: false }, // Type3 fonts d0: { id: OPS.setCharWidth, numArgs: 2, variableArgs: false }, @@ -16144,7 +12613,7 @@ var EvaluatorPreprocessor = (function EvaluatorPreprocessor() { DP: { id: OPS.markPointProps, numArgs: 2, variableArgs: false }, BMC: { id: OPS.beginMarkedContent, numArgs: 1, variableArgs: false }, BDC: { id: OPS.beginMarkedContentProps, numArgs: 2, - variableArgs: false }, + variableArgs: false }, EMC: { id: OPS.endMarkedContent, numArgs: 0, variableArgs: false }, // Compatibility @@ -16164,101 +12633,121 @@ var EvaluatorPreprocessor = (function EvaluatorPreprocessor() { 'null': null }; - function EvaluatorPreprocessor(stream, xref) { + function EvaluatorPreprocessor(stream, xref, stateManager) { // TODO(mduan): pass array of knownCommands rather than OP_MAP // dictionary this.parser = new Parser(new Lexer(stream, OP_MAP), false, xref); - this.ctm = new Float32Array([1, 0, 0, 1, 0, 0]); - this.savedStates = []; + this.stateManager = stateManager; + this.nonProcessedArgs = []; } + EvaluatorPreprocessor.prototype = { get savedStatesDepth() { - return this.savedStates.length; + return this.stateManager.stateStack.length; }, - read: function EvaluatorPreprocessor_read() { - var args = []; + + // |operation| is an object with two fields: + // + // - |fn| is an out param. + // + // - |args| is an inout param. On entry, it should have one of two values. + // + // - An empty array. This indicates that the caller is providing the + // array in which the args will be stored in. The caller should use + // this value if it can reuse a single array for each call to read(). + // + // - |null|. This indicates that the caller needs this function to create + // the array in which any args are stored in. If there are zero args, + // this function will leave |operation.args| as |null| (thus avoiding + // allocations that would occur if we used an empty array to represent + // zero arguments). Otherwise, it will replace |null| with a new array + // containing the arguments. The caller should use this value if it + // cannot reuse an array for each call to read(). + // + // These two modes are present because this function is very hot and so + // avoiding allocations where possible is worthwhile. + // + read: function EvaluatorPreprocessor_read(operation) { + var args = operation.args; while (true) { var obj = this.parser.getObj(); - if (isEOF(obj)) { - return null; // no more commands - } - if (!isCmd(obj)) { - // argument - if (obj !== null && obj !== undefined) { - args.push(obj instanceof Dict ? obj.getAll() : obj); - assertWellFormed(args.length <= 33, 'Too many arguments'); - } - continue; - } - - var cmd = obj.cmd; - // Check that the command is valid - var opSpec = OP_MAP[cmd]; - if (!opSpec) { - warn('Unknown command "' + cmd + '"'); - continue; - } - - var fn = opSpec.id; - - // Validate the number of arguments for the command - if (opSpec.variableArgs) { - if (args.length > opSpec.numArgs) { - info('Command ' + fn + ': expected [0,' + opSpec.numArgs + - '] args, but received ' + args.length + ' args'); - } - } else { - if (args.length < opSpec.numArgs) { - // If we receive too few args, it's not possible to possible - // to execute the command, so skip the command - info('Command ' + fn + ': because expected ' + - opSpec.numArgs + ' args, but received ' + args.length + - ' args; skipping'); - args = []; + if (isCmd(obj)) { + var cmd = obj.cmd; + // Check that the command is valid + var opSpec = OP_MAP[cmd]; + if (!opSpec) { + warn('Unknown command "' + cmd + '"'); continue; - } else if (args.length > opSpec.numArgs) { - info('Command ' + fn + ': expected ' + opSpec.numArgs + - ' args, but received ' + args.length + ' args'); + } + + var fn = opSpec.id; + var numArgs = opSpec.numArgs; + var argsLength = args !== null ? args.length : 0; + + if (!opSpec.variableArgs) { + // Postscript commands can be nested, e.g. /F2 /GS2 gs 5.711 Tf + if (argsLength !== numArgs) { + var nonProcessedArgs = this.nonProcessedArgs; + while (argsLength > numArgs) { + nonProcessedArgs.push(args.shift()); + argsLength--; + } + while (argsLength < numArgs && nonProcessedArgs.length !== 0) { + if (!args) { + args = []; + } + args.unshift(nonProcessedArgs.pop()); + argsLength++; + } + } + + if (argsLength < numArgs) { + // If we receive too few args, it's not possible to possible + // to execute the command, so skip the command + info('Command ' + fn + ': because expected ' + + numArgs + ' args, but received ' + argsLength + + ' args; skipping'); + args = null; + continue; + } + } else if (argsLength > numArgs) { + info('Command ' + fn + ': expected [0,' + numArgs + + '] args, but received ' + argsLength + ' args'); + } + + // TODO figure out how to type-check vararg functions + this.preprocessCommand(fn, args); + + operation.fn = fn; + operation.args = args; + return true; + } else { + if (isEOF(obj)) { + return false; // no more commands + } + // argument + if (obj !== null) { + if (!args) { + args = []; + } + args.push((obj instanceof Dict ? obj.getAll() : obj)); + assert(args.length <= 33, 'Too many arguments'); } } - - // TODO figure out how to type-check vararg functions - - this.preprocessCommand(fn, args); - - return {fn: fn, args: args}; } }, - getState: function EvaluatorPreprocessor_getState() { - return { - ctm: this.ctm - }; - }, - setState: function EvaluatorPreprocessor_setState(state) { - this.ctm = state.ctm; - }, - preprocessCommand: function EvaluatorPreprocessor_preprocessCommand(fn, - args) { + + preprocessCommand: + function EvaluatorPreprocessor_preprocessCommand(fn, args) { switch (fn | 0) { case OPS.save: - this.savedStates.push(this.getState()); + this.stateManager.save(); break; case OPS.restore: - var previousState = this.savedStates.pop(); - if (previousState) { - this.setState(previousState); - } + this.stateManager.restore(); break; case OPS.transform: - var ctm = this.ctm; - var m = new Float32Array(6); - m[0] = ctm[0] * args[0] + ctm[2] * args[1]; - m[1] = ctm[1] * args[0] + ctm[3] * args[1]; - m[2] = ctm[0] * args[2] + ctm[2] * args[3]; - m[3] = ctm[1] * args[2] + ctm[3] * args[3]; - m[4] = ctm[0] * args[4] + ctm[2] * args[5] + ctm[4]; - m[5] = ctm[1] * args[4] + ctm[3] * args[5] + ctm[5]; - this.ctm = m; + this.stateManager.transform(args); break; } } @@ -16266,11 +12755,1352 @@ var EvaluatorPreprocessor = (function EvaluatorPreprocessor() { return EvaluatorPreprocessor; })(); +var QueueOptimizer = (function QueueOptimizerClosure() { + function addState(parentState, pattern, fn) { + var state = parentState; + for (var i = 0, ii = pattern.length - 1; i < ii; i++) { + var item = pattern[i]; + state = (state[item] || (state[item] = [])); + } + state[pattern[pattern.length - 1]] = fn; + } + + function handlePaintSolidColorImageMask(iFirstSave, count, fnArray, + argsArray) { + // Handles special case of mainly LaTeX documents which use image masks to + // draw lines with the current fill style. + // 'count' groups of (save, transform, paintImageMaskXObject, restore)+ + // have been found at iFirstSave. + var iFirstPIMXO = iFirstSave + 2; + for (var i = 0; i < count; i++) { + var arg = argsArray[iFirstPIMXO + 4 * i]; + var imageMask = arg.length === 1 && arg[0]; + if (imageMask && imageMask.width === 1 && imageMask.height === 1 && + (!imageMask.data.length || + (imageMask.data.length === 1 && imageMask.data[0] === 0))) { + fnArray[iFirstPIMXO + 4 * i] = OPS.paintSolidColorImageMask; + continue; + } + break; + } + return count - i; + } + + var InitialState = []; + + // This replaces (save, transform, paintInlineImageXObject, restore)+ + // sequences with one |paintInlineImageXObjectGroup| operation. + addState(InitialState, + [OPS.save, OPS.transform, OPS.paintInlineImageXObject, OPS.restore], + function foundInlineImageGroup(context) { + var MIN_IMAGES_IN_INLINE_IMAGES_BLOCK = 10; + var MAX_IMAGES_IN_INLINE_IMAGES_BLOCK = 200; + var MAX_WIDTH = 1000; + var IMAGE_PADDING = 1; + + var fnArray = context.fnArray, argsArray = context.argsArray; + var curr = context.iCurr; + var iFirstSave = curr - 3; + var iFirstTransform = curr - 2; + var iFirstPIIXO = curr - 1; + + // Look for the quartets. + var i = iFirstSave + 4; + var ii = fnArray.length; + while (i + 3 < ii) { + if (fnArray[i] !== OPS.save || + fnArray[i + 1] !== OPS.transform || + fnArray[i + 2] !== OPS.paintInlineImageXObject || + fnArray[i + 3] !== OPS.restore) { + break; // ops don't match + } + i += 4; + } + + // At this point, i is the index of the first op past the last valid + // quartet. + var count = Math.min((i - iFirstSave) / 4, + MAX_IMAGES_IN_INLINE_IMAGES_BLOCK); + if (count < MIN_IMAGES_IN_INLINE_IMAGES_BLOCK) { + return i; + } + + // assuming that heights of those image is too small (~1 pixel) + // packing as much as possible by lines + var maxX = 0; + var map = [], maxLineHeight = 0; + var currentX = IMAGE_PADDING, currentY = IMAGE_PADDING; + var q; + for (q = 0; q < count; q++) { + var transform = argsArray[iFirstTransform + (q << 2)]; + var img = argsArray[iFirstPIIXO + (q << 2)][0]; + if (currentX + img.width > MAX_WIDTH) { + // starting new line + maxX = Math.max(maxX, currentX); + currentY += maxLineHeight + 2 * IMAGE_PADDING; + currentX = 0; + maxLineHeight = 0; + } + map.push({ + transform: transform, + x: currentX, y: currentY, + w: img.width, h: img.height + }); + currentX += img.width + 2 * IMAGE_PADDING; + maxLineHeight = Math.max(maxLineHeight, img.height); + } + var imgWidth = Math.max(maxX, currentX) + IMAGE_PADDING; + var imgHeight = currentY + maxLineHeight + IMAGE_PADDING; + var imgData = new Uint8Array(imgWidth * imgHeight * 4); + var imgRowSize = imgWidth << 2; + for (q = 0; q < count; q++) { + var data = argsArray[iFirstPIIXO + (q << 2)][0].data; + // Copy image by lines and extends pixels into padding. + var rowSize = map[q].w << 2; + var dataOffset = 0; + var offset = (map[q].x + map[q].y * imgWidth) << 2; + imgData.set(data.subarray(0, rowSize), offset - imgRowSize); + for (var k = 0, kk = map[q].h; k < kk; k++) { + imgData.set(data.subarray(dataOffset, dataOffset + rowSize), offset); + dataOffset += rowSize; + offset += imgRowSize; + } + imgData.set(data.subarray(dataOffset - rowSize, dataOffset), offset); + while (offset >= 0) { + data[offset - 4] = data[offset]; + data[offset - 3] = data[offset + 1]; + data[offset - 2] = data[offset + 2]; + data[offset - 1] = data[offset + 3]; + data[offset + rowSize] = data[offset + rowSize - 4]; + data[offset + rowSize + 1] = data[offset + rowSize - 3]; + data[offset + rowSize + 2] = data[offset + rowSize - 2]; + data[offset + rowSize + 3] = data[offset + rowSize - 1]; + offset -= imgRowSize; + } + } + + // Replace queue items. + fnArray.splice(iFirstSave, count * 4, OPS.paintInlineImageXObjectGroup); + argsArray.splice(iFirstSave, count * 4, + [{ width: imgWidth, height: imgHeight, kind: ImageKind.RGBA_32BPP, + data: imgData }, map]); + + return iFirstSave + 1; + }); + + // This replaces (save, transform, paintImageMaskXObject, restore)+ + // sequences with one |paintImageMaskXObjectGroup| or one + // |paintImageMaskXObjectRepeat| operation. + addState(InitialState, + [OPS.save, OPS.transform, OPS.paintImageMaskXObject, OPS.restore], + function foundImageMaskGroup(context) { + var MIN_IMAGES_IN_MASKS_BLOCK = 10; + var MAX_IMAGES_IN_MASKS_BLOCK = 100; + var MAX_SAME_IMAGES_IN_MASKS_BLOCK = 1000; + + var fnArray = context.fnArray, argsArray = context.argsArray; + var curr = context.iCurr; + var iFirstSave = curr - 3; + var iFirstTransform = curr - 2; + var iFirstPIMXO = curr - 1; + + // Look for the quartets. + var i = iFirstSave + 4; + var ii = fnArray.length; + while (i + 3 < ii) { + if (fnArray[i] !== OPS.save || + fnArray[i + 1] !== OPS.transform || + fnArray[i + 2] !== OPS.paintImageMaskXObject || + fnArray[i + 3] !== OPS.restore) { + break; // ops don't match + } + i += 4; + } + + // At this point, i is the index of the first op past the last valid + // quartet. + var count = (i - iFirstSave) / 4; + count = handlePaintSolidColorImageMask(iFirstSave, count, fnArray, + argsArray); + if (count < MIN_IMAGES_IN_MASKS_BLOCK) { + return i; + } + + var q; + var isSameImage = false; + var iTransform, transformArgs; + var firstPIMXOArg0 = argsArray[iFirstPIMXO][0]; + if (argsArray[iFirstTransform][1] === 0 && + argsArray[iFirstTransform][2] === 0) { + isSameImage = true; + var firstTransformArg0 = argsArray[iFirstTransform][0]; + var firstTransformArg3 = argsArray[iFirstTransform][3]; + iTransform = iFirstTransform + 4; + var iPIMXO = iFirstPIMXO + 4; + for (q = 1; q < count; q++, iTransform += 4, iPIMXO += 4) { + transformArgs = argsArray[iTransform]; + if (argsArray[iPIMXO][0] !== firstPIMXOArg0 || + transformArgs[0] !== firstTransformArg0 || + transformArgs[1] !== 0 || + transformArgs[2] !== 0 || + transformArgs[3] !== firstTransformArg3) { + if (q < MIN_IMAGES_IN_MASKS_BLOCK) { + isSameImage = false; + } else { + count = q; + } + break; // different image or transform + } + } + } + + if (isSameImage) { + count = Math.min(count, MAX_SAME_IMAGES_IN_MASKS_BLOCK); + var positions = new Float32Array(count * 2); + iTransform = iFirstTransform; + for (q = 0; q < count; q++, iTransform += 4) { + transformArgs = argsArray[iTransform]; + positions[(q << 1)] = transformArgs[4]; + positions[(q << 1) + 1] = transformArgs[5]; + } + + // Replace queue items. + fnArray.splice(iFirstSave, count * 4, OPS.paintImageMaskXObjectRepeat); + argsArray.splice(iFirstSave, count * 4, + [firstPIMXOArg0, firstTransformArg0, firstTransformArg3, positions]); + } else { + count = Math.min(count, MAX_IMAGES_IN_MASKS_BLOCK); + var images = []; + for (q = 0; q < count; q++) { + transformArgs = argsArray[iFirstTransform + (q << 2)]; + var maskParams = argsArray[iFirstPIMXO + (q << 2)][0]; + images.push({ data: maskParams.data, width: maskParams.width, + height: maskParams.height, + transform: transformArgs }); + } + + // Replace queue items. + fnArray.splice(iFirstSave, count * 4, OPS.paintImageMaskXObjectGroup); + argsArray.splice(iFirstSave, count * 4, [images]); + } + + return iFirstSave + 1; + }); + + // This replaces (save, transform, paintImageXObject, restore)+ sequences + // with one paintImageXObjectRepeat operation, if the |transform| and + // |paintImageXObjectRepeat| ops are appropriate. + addState(InitialState, + [OPS.save, OPS.transform, OPS.paintImageXObject, OPS.restore], + function (context) { + var MIN_IMAGES_IN_BLOCK = 3; + var MAX_IMAGES_IN_BLOCK = 1000; + + var fnArray = context.fnArray, argsArray = context.argsArray; + var curr = context.iCurr; + var iFirstSave = curr - 3; + var iFirstTransform = curr - 2; + var iFirstPIXO = curr - 1; + var iFirstRestore = curr; + + if (argsArray[iFirstTransform][1] !== 0 || + argsArray[iFirstTransform][2] !== 0) { + return iFirstRestore + 1; // transform has the wrong form + } + + // Look for the quartets. + var firstPIXOArg0 = argsArray[iFirstPIXO][0]; + var firstTransformArg0 = argsArray[iFirstTransform][0]; + var firstTransformArg3 = argsArray[iFirstTransform][3]; + var i = iFirstSave + 4; + var ii = fnArray.length; + while (i + 3 < ii) { + if (fnArray[i] !== OPS.save || + fnArray[i + 1] !== OPS.transform || + fnArray[i + 2] !== OPS.paintImageXObject || + fnArray[i + 3] !== OPS.restore) { + break; // ops don't match + } + if (argsArray[i + 1][0] !== firstTransformArg0 || + argsArray[i + 1][1] !== 0 || + argsArray[i + 1][2] !== 0 || + argsArray[i + 1][3] !== firstTransformArg3) { + break; // transforms don't match + } + if (argsArray[i + 2][0] !== firstPIXOArg0) { + break; // images don't match + } + i += 4; + } + + // At this point, i is the index of the first op past the last valid + // quartet. + var count = Math.min((i - iFirstSave) / 4, MAX_IMAGES_IN_BLOCK); + if (count < MIN_IMAGES_IN_BLOCK) { + return i; + } + + // Extract the (x,y) positions from all of the matching transforms. + var positions = new Float32Array(count * 2); + var iTransform = iFirstTransform; + for (var q = 0; q < count; q++, iTransform += 4) { + var transformArgs = argsArray[iTransform]; + positions[(q << 1)] = transformArgs[4]; + positions[(q << 1) + 1] = transformArgs[5]; + } + + // Replace queue items. + var args = [firstPIXOArg0, firstTransformArg0, firstTransformArg3, + positions]; + fnArray.splice(iFirstSave, count * 4, OPS.paintImageXObjectRepeat); + argsArray.splice(iFirstSave, count * 4, args); + + return iFirstSave + 1; + }); + + // This replaces (beginText, setFont, setTextMatrix, showText, endText)+ + // sequences with (beginText, setFont, (setTextMatrix, showText)+, endText)+ + // sequences, if the font for each one is the same. + addState(InitialState, + [OPS.beginText, OPS.setFont, OPS.setTextMatrix, OPS.showText, OPS.endText], + function (context) { + var MIN_CHARS_IN_BLOCK = 3; + var MAX_CHARS_IN_BLOCK = 1000; + + var fnArray = context.fnArray, argsArray = context.argsArray; + var curr = context.iCurr; + var iFirstBeginText = curr - 4; + var iFirstSetFont = curr - 3; + var iFirstSetTextMatrix = curr - 2; + var iFirstShowText = curr - 1; + var iFirstEndText = curr; + + // Look for the quintets. + var firstSetFontArg0 = argsArray[iFirstSetFont][0]; + var firstSetFontArg1 = argsArray[iFirstSetFont][1]; + var i = iFirstBeginText + 5; + var ii = fnArray.length; + while (i + 4 < ii) { + if (fnArray[i] !== OPS.beginText || + fnArray[i + 1] !== OPS.setFont || + fnArray[i + 2] !== OPS.setTextMatrix || + fnArray[i + 3] !== OPS.showText || + fnArray[i + 4] !== OPS.endText) { + break; // ops don't match + } + if (argsArray[i + 1][0] !== firstSetFontArg0 || + argsArray[i + 1][1] !== firstSetFontArg1) { + break; // fonts don't match + } + i += 5; + } + + // At this point, i is the index of the first op past the last valid + // quintet. + var count = Math.min(((i - iFirstBeginText) / 5), MAX_CHARS_IN_BLOCK); + if (count < MIN_CHARS_IN_BLOCK) { + return i; + } + + // If the preceding quintet is (, setFont, setTextMatrix, + // showText, endText), include that as well. (E.g. might be + // |dependency|.) + var iFirst = iFirstBeginText; + if (iFirstBeginText >= 4 && + fnArray[iFirstBeginText - 4] === fnArray[iFirstSetFont] && + fnArray[iFirstBeginText - 3] === fnArray[iFirstSetTextMatrix] && + fnArray[iFirstBeginText - 2] === fnArray[iFirstShowText] && + fnArray[iFirstBeginText - 1] === fnArray[iFirstEndText] && + argsArray[iFirstBeginText - 4][0] === firstSetFontArg0 && + argsArray[iFirstBeginText - 4][1] === firstSetFontArg1) { + count++; + iFirst -= 5; + } + + // Remove (endText, beginText, setFont) trios. + var iEndText = iFirst + 4; + for (var q = 1; q < count; q++) { + fnArray.splice(iEndText, 3); + argsArray.splice(iEndText, 3); + iEndText += 2; + } + + return iEndText + 1; + }); + + function QueueOptimizer() {} + + QueueOptimizer.prototype = { + optimize: function QueueOptimizer_optimize(queue) { + var fnArray = queue.fnArray, argsArray = queue.argsArray; + var context = { + iCurr: 0, + fnArray: fnArray, + argsArray: argsArray + }; + var state; + var i = 0, ii = fnArray.length; + while (i < ii) { + state = (state || InitialState)[fnArray[i]]; + if (typeof state === 'function') { // we found some handler + context.iCurr = i; + // state() returns the index of the first non-matching op (if we + // didn't match) or the first op past the modified ops (if we did + // match and replace). + i = state(context); + state = undefined; // reset the state machine + ii = context.fnArray.length; + } else { + i++; + } + } + } + }; + return QueueOptimizer; +})(); + + +var BUILT_IN_CMAPS = [ +// << Start unicode maps. +'Adobe-GB1-UCS2', +'Adobe-CNS1-UCS2', +'Adobe-Japan1-UCS2', +'Adobe-Korea1-UCS2', +// >> End unicode maps. +'78-EUC-H', +'78-EUC-V', +'78-H', +'78-RKSJ-H', +'78-RKSJ-V', +'78-V', +'78ms-RKSJ-H', +'78ms-RKSJ-V', +'83pv-RKSJ-H', +'90ms-RKSJ-H', +'90ms-RKSJ-V', +'90msp-RKSJ-H', +'90msp-RKSJ-V', +'90pv-RKSJ-H', +'90pv-RKSJ-V', +'Add-H', +'Add-RKSJ-H', +'Add-RKSJ-V', +'Add-V', +'Adobe-CNS1-0', +'Adobe-CNS1-1', +'Adobe-CNS1-2', +'Adobe-CNS1-3', +'Adobe-CNS1-4', +'Adobe-CNS1-5', +'Adobe-CNS1-6', +'Adobe-GB1-0', +'Adobe-GB1-1', +'Adobe-GB1-2', +'Adobe-GB1-3', +'Adobe-GB1-4', +'Adobe-GB1-5', +'Adobe-Japan1-0', +'Adobe-Japan1-1', +'Adobe-Japan1-2', +'Adobe-Japan1-3', +'Adobe-Japan1-4', +'Adobe-Japan1-5', +'Adobe-Japan1-6', +'Adobe-Korea1-0', +'Adobe-Korea1-1', +'Adobe-Korea1-2', +'B5-H', +'B5-V', +'B5pc-H', +'B5pc-V', +'CNS-EUC-H', +'CNS-EUC-V', +'CNS1-H', +'CNS1-V', +'CNS2-H', +'CNS2-V', +'ETHK-B5-H', +'ETHK-B5-V', +'ETen-B5-H', +'ETen-B5-V', +'ETenms-B5-H', +'ETenms-B5-V', +'EUC-H', +'EUC-V', +'Ext-H', +'Ext-RKSJ-H', +'Ext-RKSJ-V', +'Ext-V', +'GB-EUC-H', +'GB-EUC-V', +'GB-H', +'GB-V', +'GBK-EUC-H', +'GBK-EUC-V', +'GBK2K-H', +'GBK2K-V', +'GBKp-EUC-H', +'GBKp-EUC-V', +'GBT-EUC-H', +'GBT-EUC-V', +'GBT-H', +'GBT-V', +'GBTpc-EUC-H', +'GBTpc-EUC-V', +'GBpc-EUC-H', +'GBpc-EUC-V', +'H', +'HKdla-B5-H', +'HKdla-B5-V', +'HKdlb-B5-H', +'HKdlb-B5-V', +'HKgccs-B5-H', +'HKgccs-B5-V', +'HKm314-B5-H', +'HKm314-B5-V', +'HKm471-B5-H', +'HKm471-B5-V', +'HKscs-B5-H', +'HKscs-B5-V', +'Hankaku', +'Hiragana', +'KSC-EUC-H', +'KSC-EUC-V', +'KSC-H', +'KSC-Johab-H', +'KSC-Johab-V', +'KSC-V', +'KSCms-UHC-H', +'KSCms-UHC-HW-H', +'KSCms-UHC-HW-V', +'KSCms-UHC-V', +'KSCpc-EUC-H', +'KSCpc-EUC-V', +'Katakana', +'NWP-H', +'NWP-V', +'RKSJ-H', +'RKSJ-V', +'Roman', +'UniCNS-UCS2-H', +'UniCNS-UCS2-V', +'UniCNS-UTF16-H', +'UniCNS-UTF16-V', +'UniCNS-UTF32-H', +'UniCNS-UTF32-V', +'UniCNS-UTF8-H', +'UniCNS-UTF8-V', +'UniGB-UCS2-H', +'UniGB-UCS2-V', +'UniGB-UTF16-H', +'UniGB-UTF16-V', +'UniGB-UTF32-H', +'UniGB-UTF32-V', +'UniGB-UTF8-H', +'UniGB-UTF8-V', +'UniJIS-UCS2-H', +'UniJIS-UCS2-HW-H', +'UniJIS-UCS2-HW-V', +'UniJIS-UCS2-V', +'UniJIS-UTF16-H', +'UniJIS-UTF16-V', +'UniJIS-UTF32-H', +'UniJIS-UTF32-V', +'UniJIS-UTF8-H', +'UniJIS-UTF8-V', +'UniJIS2004-UTF16-H', +'UniJIS2004-UTF16-V', +'UniJIS2004-UTF32-H', +'UniJIS2004-UTF32-V', +'UniJIS2004-UTF8-H', +'UniJIS2004-UTF8-V', +'UniJISPro-UCS2-HW-V', +'UniJISPro-UCS2-V', +'UniJISPro-UTF8-V', +'UniJISX0213-UTF32-H', +'UniJISX0213-UTF32-V', +'UniJISX02132004-UTF32-H', +'UniJISX02132004-UTF32-V', +'UniKS-UCS2-H', +'UniKS-UCS2-V', +'UniKS-UTF16-H', +'UniKS-UTF16-V', +'UniKS-UTF32-H', +'UniKS-UTF32-V', +'UniKS-UTF8-H', +'UniKS-UTF8-V', +'V', +'WP-Symbol']; + +// CMap, not to be confused with TrueType's cmap. +var CMap = (function CMapClosure() { + function CMap(builtInCMap) { + // Codespace ranges are stored as follows: + // [[1BytePairs], [2BytePairs], [3BytePairs], [4BytePairs]] + // where nBytePairs are ranges e.g. [low1, high1, low2, high2, ...] + this.codespaceRanges = [[], [], [], []]; + this.numCodespaceRanges = 0; + // Map entries have one of two forms. + // - cid chars are 16-bit unsigned integers, stored as integers. + // - bf chars are variable-length byte sequences, stored as strings, with + // one byte per character. + this._map = []; + this.vertical = false; + this.useCMap = null; + this.builtInCMap = builtInCMap; + } + CMap.prototype = { + addCodespaceRange: function(n, low, high) { + this.codespaceRanges[n - 1].push(low, high); + this.numCodespaceRanges++; + }, + + mapCidRange: function(low, high, dstLow) { + while (low <= high) { + this._map[low++] = dstLow++; + } + }, + + mapBfRange: function(low, high, dstLow) { + var lastByte = dstLow.length - 1; + while (low <= high) { + this._map[low++] = dstLow; + // Only the last byte has to be incremented. + dstLow = dstLow.substr(0, lastByte) + + String.fromCharCode(dstLow.charCodeAt(lastByte) + 1); + } + }, + + mapBfRangeToArray: function(low, high, array) { + var i = 0, ii = array.length; + while (low <= high && i < ii) { + this._map[low] = array[i++]; + ++low; + } + }, + + // This is used for both bf and cid chars. + mapOne: function(src, dst) { + this._map[src] = dst; + }, + + lookup: function(code) { + return this._map[code]; + }, + + contains: function(code) { + return this._map[code] !== undefined; + }, + + forEach: function(callback) { + // Most maps have fewer than 65536 entries, and for those we use normal + // array iteration. But really sparse tables are possible -- e.g. with + // indices in the *billions*. For such tables we use for..in, which isn't + // ideal because it stringifies the indices for all present elements, but + // it does avoid iterating over every undefined entry. + var map = this._map; + var length = map.length; + var i; + if (length <= 0x10000) { + for (i = 0; i < length; i++) { + if (map[i] !== undefined) { + callback(i, map[i]); + } + } + } else { + for (i in this._map) { + callback(i, map[i]); + } + } + }, + + charCodeOf: function(value) { + return this._map.indexOf(value); + }, + + getMap: function() { + return this._map; + }, + + readCharCode: function(str, offset, out) { + var c = 0; + var codespaceRanges = this.codespaceRanges; + var codespaceRangesLen = this.codespaceRanges.length; + // 9.7.6.2 CMap Mapping + // The code length is at most 4. + for (var n = 0; n < codespaceRangesLen; n++) { + c = ((c << 8) | str.charCodeAt(offset + n)) >>> 0; + // Check each codespace range to see if it falls within. + var codespaceRange = codespaceRanges[n]; + for (var k = 0, kk = codespaceRange.length; k < kk;) { + var low = codespaceRange[k++]; + var high = codespaceRange[k++]; + if (c >= low && c <= high) { + out.charcode = c; + out.length = n + 1; + return; + } + } + } + out.charcode = 0; + out.length = 1; + } + }; + return CMap; +})(); + +// A special case of CMap, where the _map array implicitly has a length of +// 65535 and each element is equal to its index. +var IdentityCMap = (function IdentityCMapClosure() { + function IdentityCMap(vertical, n) { + CMap.call(this); + this.vertical = vertical; + this.addCodespaceRange(n, 0, 0xffff); + } + Util.inherit(IdentityCMap, CMap, {}); + + IdentityCMap.prototype = { + addCodespaceRange: CMap.prototype.addCodespaceRange, + + mapCidRange: function(low, high, dstLow) { + error('should not call mapCidRange'); + }, + + mapBfRange: function(low, high, dstLow) { + error('should not call mapBfRange'); + }, + + mapBfRangeToArray: function(low, high, array) { + error('should not call mapBfRangeToArray'); + }, + + mapOne: function(src, dst) { + error('should not call mapCidOne'); + }, + + lookup: function(code) { + return (isInt(code) && code <= 0xffff) ? code : undefined; + }, + + contains: function(code) { + return isInt(code) && code <= 0xffff; + }, + + forEach: function(callback) { + for (var i = 0; i <= 0xffff; i++) { + callback(i, i); + } + }, + + charCodeOf: function(value) { + return (isInt(value) && value <= 0xffff) ? value : -1; + }, + + getMap: function() { + // Sometimes identity maps must be instantiated, but it's rare. + var map = new Array(0x10000); + for (var i = 0; i <= 0xffff; i++) { + map[i] = i; + } + return map; + }, + + readCharCode: CMap.prototype.readCharCode + }; + + return IdentityCMap; +})(); + +var BinaryCMapReader = (function BinaryCMapReaderClosure() { + function fetchBinaryData(url) { + var nonBinaryRequest = PDFJS.disableWorker; + var request = new XMLHttpRequest(); + request.open('GET', url, false); + if (!nonBinaryRequest) { + try { + request.responseType = 'arraybuffer'; + nonBinaryRequest = request.responseType !== 'arraybuffer'; + } catch (e) { + nonBinaryRequest = true; + } + } + if (nonBinaryRequest && request.overrideMimeType) { + request.overrideMimeType('text/plain; charset=x-user-defined'); + } + request.send(null); + if (nonBinaryRequest ? !request.responseText : !request.response) { + error('Unable to get binary cMap at: ' + url); + } + if (nonBinaryRequest) { + var data = Array.prototype.map.call(request.responseText, function (ch) { + return ch.charCodeAt(0) & 255; + }); + return new Uint8Array(data); + } + return new Uint8Array(request.response); + } + + function hexToInt(a, size) { + var n = 0; + for (var i = 0; i <= size; i++) { + n = (n << 8) | a[i]; + } + return n >>> 0; + } + + function hexToStr(a, size) { + // This code is hot. Special-case some common values to avoid creating an + // object with subarray(). + if (size === 1) { + return String.fromCharCode(a[0], a[1]); + } + if (size === 3) { + return String.fromCharCode(a[0], a[1], a[2], a[3]); + } + return String.fromCharCode.apply(null, a.subarray(0, size + 1)); + } + + function addHex(a, b, size) { + var c = 0; + for (var i = size; i >= 0; i--) { + c += a[i] + b[i]; + a[i] = c & 255; + c >>= 8; + } + } + + function incHex(a, size) { + var c = 1; + for (var i = size; i >= 0 && c > 0; i--) { + c += a[i]; + a[i] = c & 255; + c >>= 8; + } + } + + var MAX_NUM_SIZE = 16; + var MAX_ENCODED_NUM_SIZE = 19; // ceil(MAX_NUM_SIZE * 7 / 8) + + function BinaryCMapStream(data) { + this.buffer = data; + this.pos = 0; + this.end = data.length; + this.tmpBuf = new Uint8Array(MAX_ENCODED_NUM_SIZE); + } + + BinaryCMapStream.prototype = { + readByte: function () { + if (this.pos >= this.end) { + return -1; + } + return this.buffer[this.pos++]; + }, + readNumber: function () { + var n = 0; + var last; + do { + var b = this.readByte(); + if (b < 0) { + error('unexpected EOF in bcmap'); + } + last = !(b & 0x80); + n = (n << 7) | (b & 0x7F); + } while (!last); + return n; + }, + readSigned: function () { + var n = this.readNumber(); + return (n & 1) ? ~(n >>> 1) : n >>> 1; + }, + readHex: function (num, size) { + num.set(this.buffer.subarray(this.pos, + this.pos + size + 1)); + this.pos += size + 1; + }, + readHexNumber: function (num, size) { + var last; + var stack = this.tmpBuf, sp = 0; + do { + var b = this.readByte(); + if (b < 0) { + error('unexpected EOF in bcmap'); + } + last = !(b & 0x80); + stack[sp++] = b & 0x7F; + } while (!last); + var i = size, buffer = 0, bufferSize = 0; + while (i >= 0) { + while (bufferSize < 8 && stack.length > 0) { + buffer = (stack[--sp] << bufferSize) | buffer; + bufferSize += 7; + } + num[i] = buffer & 255; + i--; + buffer >>= 8; + bufferSize -= 8; + } + }, + readHexSigned: function (num, size) { + this.readHexNumber(num, size); + var sign = num[size] & 1 ? 255 : 0; + var c = 0; + for (var i = 0; i <= size; i++) { + c = ((c & 1) << 8) | num[i]; + num[i] = (c >> 1) ^ sign; + } + }, + readString: function () { + var len = this.readNumber(); + var s = ''; + for (var i = 0; i < len; i++) { + s += String.fromCharCode(this.readNumber()); + } + return s; + } + }; + + function processBinaryCMap(url, cMap, extend) { + var data = fetchBinaryData(url); + var stream = new BinaryCMapStream(data); + + var header = stream.readByte(); + cMap.vertical = !!(header & 1); + + var useCMap = null; + var start = new Uint8Array(MAX_NUM_SIZE); + var end = new Uint8Array(MAX_NUM_SIZE); + var char = new Uint8Array(MAX_NUM_SIZE); + var charCode = new Uint8Array(MAX_NUM_SIZE); + var tmp = new Uint8Array(MAX_NUM_SIZE); + var code; + + var b; + while ((b = stream.readByte()) >= 0) { + var type = b >> 5; + if (type === 7) { // metadata, e.g. comment or usecmap + switch (b & 0x1F) { + case 0: + stream.readString(); // skipping comment + break; + case 1: + useCMap = stream.readString(); + break; + } + continue; + } + var sequence = !!(b & 0x10); + var dataSize = b & 15; + + assert(dataSize + 1 <= MAX_NUM_SIZE); + + var ucs2DataSize = 1; + var subitemsCount = stream.readNumber(); + var i; + switch (type) { + case 0: // codespacerange + stream.readHex(start, dataSize); + stream.readHexNumber(end, dataSize); + addHex(end, start, dataSize); + cMap.addCodespaceRange(dataSize + 1, hexToInt(start, dataSize), + hexToInt(end, dataSize)); + for (i = 1; i < subitemsCount; i++) { + incHex(end, dataSize); + stream.readHexNumber(start, dataSize); + addHex(start, end, dataSize); + stream.readHexNumber(end, dataSize); + addHex(end, start, dataSize); + cMap.addCodespaceRange(dataSize + 1, hexToInt(start, dataSize), + hexToInt(end, dataSize)); + } + break; + case 1: // notdefrange + stream.readHex(start, dataSize); + stream.readHexNumber(end, dataSize); + addHex(end, start, dataSize); + code = stream.readNumber(); + // undefined range, skipping + for (i = 1; i < subitemsCount; i++) { + incHex(end, dataSize); + stream.readHexNumber(start, dataSize); + addHex(start, end, dataSize); + stream.readHexNumber(end, dataSize); + addHex(end, start, dataSize); + code = stream.readNumber(); + // nop + } + break; + case 2: // cidchar + stream.readHex(char, dataSize); + code = stream.readNumber(); + cMap.mapOne(hexToInt(char, dataSize), code); + for (i = 1; i < subitemsCount; i++) { + incHex(char, dataSize); + if (!sequence) { + stream.readHexNumber(tmp, dataSize); + addHex(char, tmp, dataSize); + } + code = stream.readSigned() + (code + 1); + cMap.mapOne(hexToInt(char, dataSize), code); + } + break; + case 3: // cidrange + stream.readHex(start, dataSize); + stream.readHexNumber(end, dataSize); + addHex(end, start, dataSize); + code = stream.readNumber(); + cMap.mapCidRange(hexToInt(start, dataSize), hexToInt(end, dataSize), + code); + for (i = 1; i < subitemsCount; i++) { + incHex(end, dataSize); + if (!sequence) { + stream.readHexNumber(start, dataSize); + addHex(start, end, dataSize); + } else { + start.set(end); + } + stream.readHexNumber(end, dataSize); + addHex(end, start, dataSize); + code = stream.readNumber(); + cMap.mapCidRange(hexToInt(start, dataSize), hexToInt(end, dataSize), + code); + } + break; + case 4: // bfchar + stream.readHex(char, ucs2DataSize); + stream.readHex(charCode, dataSize); + cMap.mapOne(hexToInt(char, ucs2DataSize), + hexToStr(charCode, dataSize)); + for (i = 1; i < subitemsCount; i++) { + incHex(char, ucs2DataSize); + if (!sequence) { + stream.readHexNumber(tmp, ucs2DataSize); + addHex(char, tmp, ucs2DataSize); + } + incHex(charCode, dataSize); + stream.readHexSigned(tmp, dataSize); + addHex(charCode, tmp, dataSize); + cMap.mapOne(hexToInt(char, ucs2DataSize), + hexToStr(charCode, dataSize)); + } + break; + case 5: // bfrange + stream.readHex(start, ucs2DataSize); + stream.readHexNumber(end, ucs2DataSize); + addHex(end, start, ucs2DataSize); + stream.readHex(charCode, dataSize); + cMap.mapBfRange(hexToInt(start, ucs2DataSize), + hexToInt(end, ucs2DataSize), + hexToStr(charCode, dataSize)); + for (i = 1; i < subitemsCount; i++) { + incHex(end, ucs2DataSize); + if (!sequence) { + stream.readHexNumber(start, ucs2DataSize); + addHex(start, end, ucs2DataSize); + } else { + start.set(end); + } + stream.readHexNumber(end, ucs2DataSize); + addHex(end, start, ucs2DataSize); + stream.readHex(charCode, dataSize); + cMap.mapBfRange(hexToInt(start, ucs2DataSize), + hexToInt(end, ucs2DataSize), + hexToStr(charCode, dataSize)); + } + break; + default: + error('Unknown type: ' + type); + break; + } + } + + if (useCMap) { + extend(useCMap); + } + return cMap; + } + + function BinaryCMapReader() {} + + BinaryCMapReader.prototype = { + read: processBinaryCMap + }; + + return BinaryCMapReader; +})(); + +var CMapFactory = (function CMapFactoryClosure() { + function strToInt(str) { + var a = 0; + for (var i = 0; i < str.length; i++) { + a = (a << 8) | str.charCodeAt(i); + } + return a >>> 0; + } + + function expectString(obj) { + if (!isString(obj)) { + error('Malformed CMap: expected string.'); + } + } + + function expectInt(obj) { + if (!isInt(obj)) { + error('Malformed CMap: expected int.'); + } + } + + function parseBfChar(cMap, lexer) { + while (true) { + var obj = lexer.getObj(); + if (isEOF(obj)) { + break; + } + if (isCmd(obj, 'endbfchar')) { + return; + } + expectString(obj); + var src = strToInt(obj); + obj = lexer.getObj(); + // TODO are /dstName used? + expectString(obj); + var dst = obj; + cMap.mapOne(src, dst); + } + } + + function parseBfRange(cMap, lexer) { + while (true) { + var obj = lexer.getObj(); + if (isEOF(obj)) { + break; + } + if (isCmd(obj, 'endbfrange')) { + return; + } + expectString(obj); + var low = strToInt(obj); + obj = lexer.getObj(); + expectString(obj); + var high = strToInt(obj); + obj = lexer.getObj(); + if (isInt(obj) || isString(obj)) { + var dstLow = isInt(obj) ? String.fromCharCode(obj) : obj; + cMap.mapBfRange(low, high, dstLow); + } else if (isCmd(obj, '[')) { + obj = lexer.getObj(); + var array = []; + while (!isCmd(obj, ']') && !isEOF(obj)) { + array.push(obj); + obj = lexer.getObj(); + } + cMap.mapBfRangeToArray(low, high, array); + } else { + break; + } + } + error('Invalid bf range.'); + } + + function parseCidChar(cMap, lexer) { + while (true) { + var obj = lexer.getObj(); + if (isEOF(obj)) { + break; + } + if (isCmd(obj, 'endcidchar')) { + return; + } + expectString(obj); + var src = strToInt(obj); + obj = lexer.getObj(); + expectInt(obj); + var dst = obj; + cMap.mapOne(src, dst); + } + } + + function parseCidRange(cMap, lexer) { + while (true) { + var obj = lexer.getObj(); + if (isEOF(obj)) { + break; + } + if (isCmd(obj, 'endcidrange')) { + return; + } + expectString(obj); + var low = strToInt(obj); + obj = lexer.getObj(); + expectString(obj); + var high = strToInt(obj); + obj = lexer.getObj(); + expectInt(obj); + var dstLow = obj; + cMap.mapCidRange(low, high, dstLow); + } + } + + function parseCodespaceRange(cMap, lexer) { + while (true) { + var obj = lexer.getObj(); + if (isEOF(obj)) { + break; + } + if (isCmd(obj, 'endcodespacerange')) { + return; + } + if (!isString(obj)) { + break; + } + var low = strToInt(obj); + obj = lexer.getObj(); + if (!isString(obj)) { + break; + } + var high = strToInt(obj); + cMap.addCodespaceRange(obj.length, low, high); + } + error('Invalid codespace range.'); + } + + function parseWMode(cMap, lexer) { + var obj = lexer.getObj(); + if (isInt(obj)) { + cMap.vertical = !!obj; + } + } + + function parseCMap(cMap, lexer, builtInCMapParams, useCMap) { + var previous; + var embededUseCMap; + objLoop: while (true) { + var obj = lexer.getObj(); + if (isEOF(obj)) { + break; + } else if (isName(obj)) { + if (obj.name === 'WMode') { + parseWMode(cMap, lexer); + } + previous = obj; + } else if (isCmd(obj)) { + switch (obj.cmd) { + case 'endcmap': + break objLoop; + case 'usecmap': + if (isName(previous)) { + embededUseCMap = previous.name; + } + break; + case 'begincodespacerange': + parseCodespaceRange(cMap, lexer); + break; + case 'beginbfchar': + parseBfChar(cMap, lexer); + break; + case 'begincidchar': + parseCidChar(cMap, lexer); + break; + case 'beginbfrange': + parseBfRange(cMap, lexer); + break; + case 'begincidrange': + parseCidRange(cMap, lexer); + break; + } + } + } + + if (!useCMap && embededUseCMap) { + // Load the usecmap definition from the file only if there wasn't one + // specified. + useCMap = embededUseCMap; + } + if (useCMap) { + extendCMap(cMap, builtInCMapParams, useCMap); + } + } + + function extendCMap(cMap, builtInCMapParams, useCMap) { + cMap.useCMap = createBuiltInCMap(useCMap, builtInCMapParams); + // If there aren't any code space ranges defined clone all the parent ones + // into this cMap. + if (cMap.numCodespaceRanges === 0) { + var useCodespaceRanges = cMap.useCMap.codespaceRanges; + for (var i = 0; i < useCodespaceRanges.length; i++) { + cMap.codespaceRanges[i] = useCodespaceRanges[i].slice(); + } + cMap.numCodespaceRanges = cMap.useCMap.numCodespaceRanges; + } + // Merge the map into the current one, making sure not to override + // any previously defined entries. + cMap.useCMap.forEach(function(key, value) { + if (!cMap.contains(key)) { + cMap.mapOne(key, cMap.useCMap.lookup(key)); + } + }); + } + + function parseBinaryCMap(name, builtInCMapParams) { + var url = builtInCMapParams.url + name + '.bcmap'; + var cMap = new CMap(true); + new BinaryCMapReader().read(url, cMap, function (useCMap) { + extendCMap(cMap, builtInCMapParams, useCMap); + }); + return cMap; + } + + function createBuiltInCMap(name, builtInCMapParams) { + if (name === 'Identity-H') { + return new IdentityCMap(false, 2); + } else if (name === 'Identity-V') { + return new IdentityCMap(true, 2); + } + if (BUILT_IN_CMAPS.indexOf(name) === -1) { + error('Unknown cMap name: ' + name); + } + assert(builtInCMapParams, 'built-in cMap parameters are not provided'); + + if (builtInCMapParams.packed) { + return parseBinaryCMap(name, builtInCMapParams); + } + + var request = new XMLHttpRequest(); + var url = builtInCMapParams.url + name; + request.open('GET', url, false); + request.send(null); + if (!request.responseText) { + error('Unable to get cMap at: ' + url); + } + var cMap = new CMap(true); + var lexer = new Lexer(new StringStream(request.responseText)); + parseCMap(cMap, lexer, builtInCMapParams, null); + return cMap; + } + + return { + create: function (encoding, builtInCMapParams, useCMap) { + if (isName(encoding)) { + return createBuiltInCMap(encoding.name, builtInCMapParams); + } else if (isStream(encoding)) { + var cMap = new CMap(); + var lexer = new Lexer(encoding); + try { + parseCMap(cMap, lexer, builtInCMapParams, useCMap); + } catch (e) { + warn('Invalid CMap data. ' + e); + } + return cMap; + } + error('Encoding required.'); + } + }; +})(); + // Unicode Private Use Area -var CMAP_GLYPH_OFFSET = 0xE000; -var GLYPH_AREA_SIZE = 0x1900; -var SYMBOLIC_FONT_GLYPH_OFFSET = 0xF000; +var PRIVATE_USE_OFFSET_START = 0xE000; +var PRIVATE_USE_OFFSET_END = 0xF8FF; +var SKIP_PRIVATE_USE_RANGE_F000_TO_F01F = false; // PDF Glyph Space Units are one Thousandth of a TextSpace Unit // except for Type 3 fonts @@ -16402,7 +14232,7 @@ var Encodings = { 'summation', 'product', 'pi', 'integral', 'ordfeminine', 'ordmasculine', 'Omega', 'ae', 'oslash', 'questiondown', 'exclamdown', 'logicalnot', 'radical', 'florin', 'approxequal', 'Delta', 'guillemotleft', - 'guillemotright', 'ellipsis', '', 'Agrave', 'Atilde', 'Otilde', 'OE', + 'guillemotright', 'ellipsis', 'space', 'Agrave', 'Atilde', 'Otilde', 'OE', 'oe', 'endash', 'emdash', 'quotedblleft', 'quotedblright', 'quoteleft', 'quoteright', 'divide', 'lozenge', 'ydieresis', 'Ydieresis', 'fraction', 'currency', 'guilsinglleft', 'guilsinglright', 'fi', 'fl', 'daggerdbl', @@ -16454,7 +14284,7 @@ var Encodings = { 'guilsinglleft', 'OE', 'bullet', 'Zcaron', 'bullet', 'bullet', 'quoteleft', 'quoteright', 'quotedblleft', 'quotedblright', 'bullet', 'endash', 'emdash', 'tilde', 'trademark', 'scaron', 'guilsinglright', 'oe', 'bullet', - 'zcaron', 'Ydieresis', '', 'exclamdown', 'cent', 'sterling', + 'zcaron', 'Ydieresis', 'space', 'exclamdown', 'cent', 'sterling', 'currency', 'yen', 'brokenbar', 'section', 'dieresis', 'copyright', 'ordfeminine', 'guillemotleft', 'logicalnot', 'hyphen', 'registered', 'macron', 'degree', 'plusminus', 'twosuperior', 'threesuperior', 'acute', @@ -16507,7 +14337,7 @@ var Encodings = { 'parenrighttp', 'parenrightex', 'parenrightbt', 'bracketrighttp', 'bracketrightex', 'bracketrightbt', 'bracerighttp', 'bracerightmid', 'bracerightbt'], - zapfDingbatsEncoding: ['', '', '', '', '', '', '', '', '', '', '', '', '', '', + ZapfDingbatsEncoding: ['', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', 'space', 'a1', 'a2', 'a202', 'a3', 'a4', 'a5', 'a119', 'a118', 'a117', 'a11', 'a12', 'a13', 'a14', 'a15', 'a16', 'a105', 'a17', 'a18', 'a19', @@ -16518,19 +14348,19 @@ var Encodings = { 'a57', 'a58', 'a59', 'a60', 'a61', 'a62', 'a63', 'a64', 'a65', 'a66', 'a67', 'a68', 'a69', 'a70', 'a71', 'a72', 'a73', 'a74', 'a203', 'a75', 'a204', 'a76', 'a77', 'a78', 'a79', 'a81', 'a82', 'a83', 'a84', 'a97', - 'a98', 'a99', 'a100', '', '', '', '', '', '', '', '', '', '', '', '', '', - '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', - '', '', 'a101', 'a102', 'a103', 'a104', 'a106', 'a107', 'a108', 'a112', - 'a111', 'a110', 'a109', 'a120', 'a121', 'a122', 'a123', 'a124', 'a125', - 'a126', 'a127', 'a128', 'a129', 'a130', 'a131', 'a132', 'a133', 'a134', - 'a135', 'a136', 'a137', 'a138', 'a139', 'a140', 'a141', 'a142', 'a143', - 'a144', 'a145', 'a146', 'a147', 'a148', 'a149', 'a150', 'a151', 'a152', - 'a153', 'a154', 'a155', 'a156', 'a157', 'a158', 'a159', 'a160', 'a161', - 'a163', 'a164', 'a196', 'a165', 'a192', 'a166', 'a167', 'a168', 'a169', - 'a170', 'a171', 'a172', 'a173', 'a162', 'a174', 'a175', 'a176', 'a177', - 'a178', 'a179', 'a193', 'a180', 'a199', 'a181', 'a200', 'a182', '', 'a201', - 'a183', 'a184', 'a197', 'a185', 'a194', 'a198', 'a186', 'a195', 'a187', - 'a188', 'a189', 'a190', 'a191'] + 'a98', 'a99', 'a100', '', 'a89', 'a90', 'a93', 'a94', 'a91', 'a92', 'a205', + 'a85', 'a206', 'a86', 'a87', 'a88', 'a95', 'a96', '', '', '', '', '', '', + '', '', '', '', '', '', '', '', '', '', '', '', '', 'a101', 'a102', 'a103', + 'a104', 'a106', 'a107', 'a108', 'a112', 'a111', 'a110', 'a109', 'a120', + 'a121', 'a122', 'a123', 'a124', 'a125', 'a126', 'a127', 'a128', 'a129', + 'a130', 'a131', 'a132', 'a133', 'a134', 'a135', 'a136', 'a137', 'a138', + 'a139', 'a140', 'a141', 'a142', 'a143', 'a144', 'a145', 'a146', 'a147', + 'a148', 'a149', 'a150', 'a151', 'a152', 'a153', 'a154', 'a155', 'a156', + 'a157', 'a158', 'a159', 'a160', 'a161', 'a163', 'a164', 'a196', 'a165', + 'a192', 'a166', 'a167', 'a168', 'a169', 'a170', 'a171', 'a172', 'a173', + 'a162', 'a174', 'a175', 'a176', 'a177', 'a178', 'a179', 'a193', 'a180', + 'a199', 'a181', 'a200', 'a182', '', 'a201', 'a183', 'a184', 'a197', 'a185', + 'a194', 'a198', 'a186', 'a195', 'a187', 'a188', 'a189', 'a190', 'a191'] }; /** @@ -16616,7 +14446,7 @@ var nonStdFontMap = { 'MS-PMincho': 'MS PMincho', 'MS-PMincho-Bold': 'MS PMincho-Bold', 'MS-PMincho-BoldItalic': 'MS PMincho-BoldItalic', - 'MS-PMincho-Italic': 'MS PMincho-Italic', + 'MS-PMincho-Italic': 'MS PMincho-Italic' }; var serifFonts = { @@ -16670,43 +14500,12 @@ var symbolsFonts = { 'Dingbats': true, 'Symbol': true, 'ZapfDingbats': true }; -var CMapConverterList = { - 'H': jis7ToUnicode, - 'V': jis7ToUnicode, - 'EUC-H': eucjpToUnicode, - 'EUC-V': eucjpToUnicode, - '83pv-RKSJ-H': sjis83pvToUnicode, - '90pv-RKSJ-H': sjis90pvToUnicode, - '90ms-RKSJ-H': sjisToUnicode, - '90ms-RKSJ-V': sjisToUnicode, - '90msp-RKSJ-H': sjisToUnicode, - '90msp-RKSJ-V': sjisToUnicode, - 'GBK-EUC-H': gbkToUnicode, - 'GBKp-EUC-H': gbkToUnicode, - 'B5pc-H': big5ToUnicode, - 'ETenms-B5-H': big5ToUnicode, - 'ETenms-B5-V': big5ToUnicode, -}; - -// CMaps using Hankaku (Halfwidth) Latin glyphs instead of proportional one. -// We need to distinguish them to get correct widths from CIDFont dicts. -var HalfwidthCMaps = { - 'H': true, - 'V': true, - 'EUC-H': true, - 'EUC-V': true, - '90ms-RKSJ-H': true, - '90ms-RKSJ-V': true, - 'UniJIS-UCS2-HW-H': true, - 'UniJIS-UCS2-HW-V': true -}; - // Glyph map for well-known standard fonts. Sometimes Ghostscript uses CID fonts // but does not embed the CID to GID mapping. The mapping is incomplete for all // glyphs, but common for some set of the standard fonts. var GlyphMapForStandardFonts = { '2': 10, '3': 32, '4': 33, '5': 34, '6': 35, '7': 36, '8': 37, '9': 38, - '10': 39, '11': 40, '12': 41, '13': 42, '14': 43, '15': 44, '16': 173, + '10': 39, '11': 40, '12': 41, '13': 42, '14': 43, '15': 44, '16': 45, '17': 46, '18': 47, '19': 48, '20': 49, '21': 50, '22': 51, '23': 52, '24': 53, '25': 54, '26': 55, '27': 56, '28': 57, '29': 58, '30': 894, '31': 60, '32': 61, '33': 62, '34': 63, '35': 64, '36': 65, '37': 66, @@ -16730,7 +14529,12 @@ var GlyphMapForStandardFonts = { '149': 8805, '150': 165, '151': 181, '152': 8706, '153': 8721, '154': 8719, '156': 8747, '157': 170, '158': 186, '159': 8486, '160': 230, '161': 248, '162': 191, '163': 161, '164': 172, '165': 8730, '166': 402, '167': 8776, - '168': 8710, '169': 171, '170': 187, '171': 8230, '210': 218, '305': 963, + '168': 8710, '169': 171, '170': 187, '171': 8230, '210': 218, '223': 711, + '224': 321, '225': 322, '227': 353, '229': 382, '234': 253, '252': 263, + '253': 268, '254': 269, '258': 258, '260': 260, '261': 261, '265': 280, + '266': 281, '268': 283, '269': 313, '275': 323, '276': 324, '278': 328, + '284': 345, '285': 346, '286': 347, '292': 367, '295': 377, '296': 378, + '298': 380, '305': 963, '306': 964, '307': 966, '308': 8215, '309': 8252, '310': 8319, '311': 8359, '312': 8592, '313': 8593, '337': 9552, '493': 1039, '494': 1040, '705': 1524, '706': 8362, '710': 64288, '711': 64298, '759': 1617, '761': 1776, @@ -16771,82 +14575,42 @@ var GlyphMapForStandardFonts = { '3316': 578, '3379': 42785, '3393': 1159, '3416': 8377 }; -var decodeBytes; -if (typeof TextDecoder !== 'undefined') { - // The encodings supported by TextDecoder can be found at: - // http://encoding.spec.whatwg.org/#concept-encoding-get - decodeBytes = function(bytes, encoding, fatal) { - return new TextDecoder(encoding, {fatal: !!fatal}).decode(bytes); - }; -} else if (typeof FileReaderSync !== 'undefined') { - decodeBytes = function(bytes, encoding) { - return new FileReaderSync().readAsText(new Blob([bytes]), encoding); - }; -} else { - // Clear the list so that decodeBytes will never be called. - CMapConverterList = {}; -} - -function jis7ToUnicode(str) { - var bytes = stringToBytes(str); - var length = bytes.length; - for (var i = 0; i < length; ++i) { - bytes[i] |= 0x80; - } - return decodeBytes(bytes, 'euc-jp'); -} - -function eucjpToUnicode(str) { - return decodeBytes(stringToBytes(str), 'euc-jp'); -} - -function sjisToUnicode(str) { - return decodeBytes(stringToBytes(str), 'shift_jis'); -} - -function sjis83pvToUnicode(str) { - var bytes = stringToBytes(str); - try { - // TODO: 83pv has incompatible mappings in ed40..ee9c range. - return decodeBytes(bytes, 'shift_jis', true); - } catch (e) { - warn('Unsupported 83pv character found'); - // Just retry without checking errors for now. - return decodeBytes(bytes, 'shift_jis'); - } -} - -function sjis90pvToUnicode(str) { - var bytes = stringToBytes(str); - try { - // TODO: 90pv has incompatible mappings in 8740..879c and eb41..ee9c. - return decodeBytes(bytes, 'shift_jis', true); - } catch (e) { - warn('Unsupported 90pv character found'); - // Just retry without checking errors for now. - return decodeBytes(bytes, 'shift_jis'); - } -} - -function gbkToUnicode(str) { - return decodeBytes(stringToBytes(str), 'gbk'); -} - -function big5ToUnicode(str) { - return decodeBytes(stringToBytes(str), 'big5'); -} - -// Some characters, e.g. copyrightserif, mapped to the private use area and +// Some characters, e.g. copyrightserif, are mapped to the private use area and // might not be displayed using standard fonts. Mapping/hacking well-known chars // to the similar equivalents in the normal characters range. -function mapPrivateUseChars(code) { - switch (code) { - case 0xF8E9: // copyrightsans - case 0xF6D9: // copyrightserif - return 0x00A9; // copyright - default: - return code; +var SpecialPUASymbols = { + '63721': 0x00A9, // copyrightsans (0xF8E9) => copyright + '63193': 0x00A9, // copyrightserif (0xF6D9) => copyright + '63720': 0x00AE, // registersans (0xF8E8) => registered + '63194': 0x00AE, // registerserif (0xF6DA) => registered + '63722': 0x2122, // trademarksans (0xF8EA) => trademark + '63195': 0x2122, // trademarkserif (0xF6DB) => trademark + '63729': 0x23A7, // bracelefttp (0xF8F1) + '63730': 0x23A8, // braceleftmid (0xF8F2) + '63731': 0x23A9, // braceleftbt (0xF8F3) + '63740': 0x23AB, // bracerighttp (0xF8FC) + '63741': 0x23AC, // bracerightmid (0xF8FD) + '63742': 0x23AD, // bracerightmid (0xF8FE) + '63726': 0x23A1, // bracketlefttp (0xF8EE) + '63727': 0x23A2, // bracketleftex (0xF8EF) + '63728': 0x23A3, // bracketleftbt (0xF8F0) + '63737': 0x23A4, // bracketrighttp (0xF8F9) + '63738': 0x23A5, // bracketrightex (0xF8FA) + '63739': 0x23A6, // bracketrightbt (0xF8FB) + '63723': 0x239B, // parenlefttp (0xF8EB) + '63724': 0x239C, // parenleftex (0xF8EC) + '63725': 0x239D, // parenleftbt (0xF8ED) + '63734': 0x239E, // parenrighttp (0xF8F6) + '63735': 0x239F, // parenrightex (0xF8F7) + '63736': 0x23A0, // parenrightbt (0xF8F8) +}; +function mapSpecialUnicodeValues(code) { + if (code >= 0xFFF0 && code <= 0xFFFF) { // Specials unicode block. + return 0; + } else if (code >= 0xF600 && code <= 0xF8FF) { + return (SpecialPUASymbols[code] || code); } + return code; } var UnicodeRanges = [ @@ -17016,28 +14780,25 @@ var MacStandardGlyphOrdering = [ function getUnicodeRangeFor(value) { for (var i = 0, ii = UnicodeRanges.length; i < ii; i++) { var range = UnicodeRanges[i]; - if (value >= range.begin && value < range.end) + if (value >= range.begin && value < range.end) { return i; + } } return -1; } function isRTLRangeFor(value) { var range = UnicodeRanges[13]; - if (value >= range.begin && value < range.end) + if (value >= range.begin && value < range.end) { return true; + } range = UnicodeRanges[11]; - if (value >= range.begin && value < range.end) + if (value >= range.begin && value < range.end) { return true; + } return false; } -function isSpecialUnicode(unicode) { - return (unicode <= 0x1F || (unicode >= 127 && unicode < GLYPH_AREA_SIZE)) || - (unicode >= CMAP_GLYPH_OFFSET && - unicode < CMAP_GLYPH_OFFSET + GLYPH_AREA_SIZE); -} - // The normalization table is obtained by filtering the Unicode characters // database with entries. var NormalizedUnicodes = { @@ -18423,29 +16184,14 @@ var NormalizedUnicodes = { function reverseIfRtl(chars) { var charsLength = chars.length; //reverse an arabic ligature - if (charsLength <= 1 || !isRTLRangeFor(chars.charCodeAt(0))) + if (charsLength <= 1 || !isRTLRangeFor(chars.charCodeAt(0))) { return chars; - - var s = ''; - for (var ii = charsLength - 1; ii >= 0; ii--) - s += chars[ii]; - return s; -} - -function fontCharsToUnicode(charCodes, font) { - var glyphs = font.charsToGlyphs(charCodes); - var result = ''; - for (var i = 0, ii = glyphs.length; i < ii; i++) { - var glyph = glyphs[i]; - if (!glyph) - continue; - - var glyphUnicode = glyph.unicode; - if (glyphUnicode in NormalizedUnicodes) - glyphUnicode = NormalizedUnicodes[glyphUnicode]; - result += reverseIfRtl(glyphUnicode); } - return result; + var s = ''; + for (var ii = charsLength - 1; ii >= 0; ii--) { + s += chars[ii]; + } + return s; } function adjustWidths(properties) { @@ -18461,6 +16207,254 @@ function adjustWidths(properties) { properties.defaultWidth *= scale; } +function getFontType(type, subtype) { + switch (type) { + case 'Type1': + return subtype === 'Type1C' ? FontType.TYPE1C : FontType.TYPE1; + case 'CIDFontType0': + return subtype === 'CIDFontType0C' ? FontType.CIDFONTTYPE0C : + FontType.CIDFONTTYPE0; + case 'OpenType': + return FontType.OPENTYPE; + case 'TrueType': + return FontType.TRUETYPE; + case 'CIDFontType2': + return FontType.CIDFONTTYPE2; + case 'MMType1': + return FontType.MMTYPE1; + case 'Type0': + return FontType.TYPE0; + default: + return FontType.UNKNOWN; + } +} + +var Glyph = (function GlyphClosure() { + function Glyph(fontChar, unicode, accent, width, vmetric, operatorListId) { + this.fontChar = fontChar; + this.unicode = unicode; + this.accent = accent; + this.width = width; + this.vmetric = vmetric; + this.operatorListId = operatorListId; + } + + Glyph.prototype.matchesForCache = + function(fontChar, unicode, accent, width, vmetric, operatorListId) { + return this.fontChar === fontChar && + this.unicode === unicode && + this.accent === accent && + this.width === width && + this.vmetric === vmetric && + this.operatorListId === operatorListId; + }; + + return Glyph; +})(); + +var ToUnicodeMap = (function ToUnicodeMapClosure() { + function ToUnicodeMap(cmap) { + // The elements of this._map can be integers or strings, depending on how + // |cmap| was created. + this._map = cmap; + } + + ToUnicodeMap.prototype = { + get length() { + return this._map.length; + }, + + forEach: function(callback) { + for (var charCode in this._map) { + callback(charCode, this._map[charCode].charCodeAt(0)); + } + }, + + get: function(i) { + return this._map[i]; + }, + + charCodeOf: function(v) { + return this._map.indexOf(v); + } + }; + + return ToUnicodeMap; +})(); + +var IdentityToUnicodeMap = (function IdentityToUnicodeMapClosure() { + function IdentityToUnicodeMap(firstChar, lastChar) { + this.firstChar = firstChar; + this.lastChar = lastChar; + } + + IdentityToUnicodeMap.prototype = { + get length() { + error('should not access .length'); + }, + + forEach: function (callback) { + for (var i = this.firstChar, ii = this.lastChar; i <= ii; i++) { + callback(i, i); + } + }, + + get: function (i) { + if (this.firstChar <= i && i <= this.lastChar) { + return String.fromCharCode(i); + } + return undefined; + }, + + charCodeOf: function (v) { + error('should not call .charCodeOf'); + } + }; + + return IdentityToUnicodeMap; +})(); + +var OpenTypeFileBuilder = (function OpenTypeFileBuilderClosure() { + function writeInt16(dest, offset, num) { + dest[offset] = (num >> 8) & 0xFF; + dest[offset + 1] = num & 0xFF; + } + + function writeInt32(dest, offset, num) { + dest[offset] = (num >> 24) & 0xFF; + dest[offset + 1] = (num >> 16) & 0xFF; + dest[offset + 2] = (num >> 8) & 0xFF; + dest[offset + 3] = num & 0xFF; + } + + function writeData(dest, offset, data) { + var i, ii; + if (data instanceof Uint8Array) { + dest.set(data, offset); + } else if (typeof data === 'string') { + for (i = 0, ii = data.length; i < ii; i++) { + dest[offset++] = data.charCodeAt(i) & 0xFF; + } + } else { + // treating everything else as array + for (i = 0, ii = data.length; i < ii; i++) { + dest[offset++] = data[i] & 0xFF; + } + } + } + + function OpenTypeFileBuilder(sfnt) { + this.sfnt = sfnt; + this.tables = Object.create(null); + } + + OpenTypeFileBuilder.getSearchParams = + function OpenTypeFileBuilder_getSearchParams(entriesCount, entrySize) { + var maxPower2 = 1, log2 = 0; + while ((maxPower2 ^ entriesCount) > maxPower2) { + maxPower2 <<= 1; + log2++; + } + var searchRange = maxPower2 * entrySize; + return { + range: searchRange, + entry: log2, + rangeShift: entrySize * entriesCount - searchRange + }; + }; + + var OTF_HEADER_SIZE = 12; + var OTF_TABLE_ENTRY_SIZE = 16; + + OpenTypeFileBuilder.prototype = { + toArray: function OpenTypeFileBuilder_toArray() { + var sfnt = this.sfnt; + + // Tables needs to be written by ascendant alphabetic order + var tables = this.tables; + var tablesNames = Object.keys(tables); + tablesNames.sort(); + var numTables = tablesNames.length; + + var i, j, jj, table, tableName; + // layout the tables data + var offset = OTF_HEADER_SIZE + numTables * OTF_TABLE_ENTRY_SIZE; + var tableOffsets = [offset]; + for (i = 0; i < numTables; i++) { + table = tables[tablesNames[i]]; + var paddedLength = ((table.length + 3) & ~3) >>> 0; + offset += paddedLength; + tableOffsets.push(offset); + } + + var file = new Uint8Array(offset); + // write the table data first (mostly for checksum) + for (i = 0; i < numTables; i++) { + table = tables[tablesNames[i]]; + writeData(file, tableOffsets[i], table); + } + + // sfnt version (4 bytes) + if (sfnt === 'true') { + // Windows hates the Mac TrueType sfnt version number + sfnt = string32(0x00010000); + } + file[0] = sfnt.charCodeAt(0) & 0xFF; + file[1] = sfnt.charCodeAt(1) & 0xFF; + file[2] = sfnt.charCodeAt(2) & 0xFF; + file[3] = sfnt.charCodeAt(3) & 0xFF; + + // numTables (2 bytes) + writeInt16(file, 4, numTables); + + var searchParams = OpenTypeFileBuilder.getSearchParams(numTables, 16); + + // searchRange (2 bytes) + writeInt16(file, 6, searchParams.range); + // entrySelector (2 bytes) + writeInt16(file, 8, searchParams.entry); + // rangeShift (2 bytes) + writeInt16(file, 10, searchParams.rangeShift); + + offset = OTF_HEADER_SIZE; + // writing table entries + for (i = 0; i < numTables; i++) { + tableName = tablesNames[i]; + file[offset] = tableName.charCodeAt(0) & 0xFF; + file[offset + 1] = tableName.charCodeAt(1) & 0xFF; + file[offset + 2] = tableName.charCodeAt(2) & 0xFF; + file[offset + 3] = tableName.charCodeAt(3) & 0xFF; + + // checksum + var checksum = 0; + for (j = tableOffsets[i], jj = tableOffsets[i + 1]; j < jj; j += 4) { + var quad = (file[j] << 24) + (file[j + 1] << 16) + + (file[j + 2] << 8) + file[j + 3]; + checksum = (checksum + quad) | 0; + } + writeInt32(file, offset + 4, checksum); + + // offset + writeInt32(file, offset + 8, tableOffsets[i]); + // length + writeInt32(file, offset + 12, tables[tableName].length); + + offset += OTF_TABLE_ENTRY_SIZE; + } + return file; + }, + + addTable: function OpenTypeFileBuilder_addTable(tag, data) { + if (tag in this.tables) { + throw new Error('Table ' + tag + ' already exists'); + } + this.tables[tag] = data; + } + }; + + return OpenTypeFileBuilder; +})(); + /** * 'Font' is the class the outside world should use, it encapsulate all the font * decoding logics whatever type it is (assuming the font type is supported). @@ -18471,13 +16465,15 @@ function adjustWidths(properties) { */ var Font = (function FontClosure() { function Font(name, file, properties) { + var charCode, glyphName, fontChar; this.name = name; this.loadedName = properties.loadedName; - this.coded = properties.coded; - this.loadCharProcs = properties.coded; + this.isType3Font = properties.isType3Font; this.sizes = []; + this.glyphCache = {}; + var names = name.split('+'); names = names.length > 1 ? names[1] : names[0]; names = names.split(/[-,_]/g)[0]; @@ -18486,29 +16482,35 @@ var Font = (function FontClosure() { this.isMonospace = !!(properties.flags & FontFlags.FixedPitch); var type = properties.type; + var subtype = properties.subtype; this.type = type; - this.fallbackName = this.isMonospace ? 'monospace' : - this.isSerifFont ? 'serif' : 'sans-serif'; + this.fallbackName = (this.isMonospace ? 'monospace' : + (this.isSerifFont ? 'serif' : 'sans-serif')); this.differences = properties.differences; this.widths = properties.widths; this.defaultWidth = properties.defaultWidth; this.composite = properties.composite; this.wideChars = properties.wideChars; - this.hasEncoding = properties.hasEncoding; - this.cmap = properties.cmap; + this.cMap = properties.cMap; this.ascent = properties.ascent / PDF_GLYPH_SPACE_UNITS; this.descent = properties.descent / PDF_GLYPH_SPACE_UNITS; - this.fontMatrix = properties.fontMatrix; - if (properties.type == 'Type3') { - this.encoding = properties.baseEncoding; + + this.toUnicode = properties.toUnicode = this.buildToUnicode(properties); + + this.toFontChar = []; + + if (properties.type === 'Type3') { + for (charCode = 0; charCode < 256; charCode++) { + this.toFontChar[charCode] = (this.differences[charCode] || + properties.defaultEncoding[charCode]); + } + this.fontType = FontType.TYPE3; return; } - // Trying to fix encoding using glyph CIDSystemInfo. - this.loadCidToUnicode(properties); this.cidEncoding = properties.cidEncoding; this.vertical = properties.vertical; if (this.vertical) { @@ -18516,33 +16518,30 @@ var Font = (function FontClosure() { this.defaultVMetrics = properties.defaultVMetrics; } - if (properties.toUnicode && properties.toUnicode.length > 0) - this.toUnicode = properties.toUnicode; - else - this.rebuildToUnicode(properties); + if (!file || file.isEmpty) { + if (file) { + // Some bad PDF generators will include empty font files, + // attempting to recover by assuming that no file exists. + warn('Font file is empty in "' + name + '" (' + this.loadedName + ')'); + } - this.toFontChar = this.buildToFontChar(this.toUnicode); - - if (!file) { + this.missingFile = true; // The file data is not specified. Trying to fix the font name // to be used with the canvas.font. var fontName = name.replace(/[,_]/g, '-'); var isStandardFont = fontName in stdFontMap; fontName = stdFontMap[fontName] || nonStdFontMap[fontName] || fontName; - this.bold = (fontName.search(/bold/gi) != -1); - this.italic = (fontName.search(/oblique/gi) != -1) || - (fontName.search(/italic/gi) != -1); + this.bold = (fontName.search(/bold/gi) !== -1); + this.italic = ((fontName.search(/oblique/gi) !== -1) || + (fontName.search(/italic/gi) !== -1)); // Use 'name' instead of 'fontName' here because the original // name ArialBlack for example will be replaced by Helvetica. - this.black = (name.search(/Black/g) != -1); + this.black = (name.search(/Black/g) !== -1); // if at least one width is present, remeasure all chars when exists this.remeasure = Object.keys(this.widths).length > 0; - - this.encoding = properties.baseEncoding; - this.noUnicodeAdaptation = true; if (isStandardFont && type === 'CIDFontType2' && properties.cidEncoding.indexOf('Identity-') === 0) { // Standard fonts might be embedded as CID font without glyph mapping. @@ -18551,20 +16550,82 @@ var Font = (function FontClosure() { for (var code in GlyphMapForStandardFonts) { map[+code] = GlyphMapForStandardFonts[code]; } + var isIdentityUnicode = this.toUnicode instanceof IdentityToUnicodeMap; + if (!isIdentityUnicode) { + this.toUnicode.forEach(function(charCode, unicodeCharCode) { + map[+charCode] = unicodeCharCode; + }); + } this.toFontChar = map; - this.toUnicode = map; + this.toUnicode = new ToUnicodeMap(map); + } else if (/Symbol/i.test(fontName)) { + var symbols = Encodings.SymbolSetEncoding; + for (charCode in symbols) { + fontChar = GlyphsUnicode[symbols[charCode]]; + if (!fontChar) { + continue; + } + this.toFontChar[charCode] = fontChar; + } + for (charCode in properties.differences) { + fontChar = GlyphsUnicode[properties.differences[charCode]]; + if (!fontChar) { + continue; + } + this.toFontChar[charCode] = fontChar; + } + } else if (/Dingbats/i.test(fontName)) { + var dingbats = Encodings.ZapfDingbatsEncoding; + for (charCode in dingbats) { + fontChar = DingbatsGlyphsUnicode[dingbats[charCode]]; + if (!fontChar) { + continue; + } + this.toFontChar[charCode] = fontChar; + } + for (charCode in properties.differences) { + fontChar = DingbatsGlyphsUnicode[properties.differences[charCode]]; + if (!fontChar) { + continue; + } + this.toFontChar[charCode] = fontChar; + } + } else if (isStandardFont) { + this.toFontChar = []; + for (charCode in properties.defaultEncoding) { + glyphName = (properties.differences[charCode] || + properties.defaultEncoding[charCode]); + this.toFontChar[charCode] = GlyphsUnicode[glyphName]; + } + } else { + var unicodeCharCode, notCidFont = (type.indexOf('CIDFontType') === -1); + this.toUnicode.forEach(function(charCode, unicodeCharCode) { + if (notCidFont) { + glyphName = (properties.differences[charCode] || + properties.defaultEncoding[charCode]); + unicodeCharCode = (GlyphsUnicode[glyphName] || unicodeCharCode); + } + this.toFontChar[charCode] = unicodeCharCode; + }.bind(this)); } this.loadedName = fontName.split('-')[0]; this.loading = false; + this.fontType = getFontType(type, subtype); return; } // Some fonts might use wrong font types for Type1C or CIDFontType0C - var subtype = properties.subtype; - if (subtype == 'Type1C' && (type != 'Type1' && type != 'MMType1')) - type = 'Type1'; - if (subtype == 'CIDFontType0C' && type != 'CIDFontType0') + if (subtype === 'Type1C' && (type !== 'Type1' && type !== 'MMType1')) { + // Some TrueType fonts by mistake claim Type1C + if (isTrueTypeFile(file)) { + subtype = 'TrueType'; + } else { + type = 'Type1'; + } + } + if (subtype === 'CIDFontType0C' && type !== 'CIDFontType0') { type = 'CIDFontType0'; + } // XXX: Temporarily change the type for open type so we trigger a warning. // This should be removed when we add support for open type. if (subtype === 'OpenType') { @@ -18573,11 +16634,14 @@ var Font = (function FontClosure() { var data; switch (type) { + case 'MMType1': + info('MMType1 font (' + name + '), falling back to Type1.'); + /* falls through */ case 'Type1': case 'CIDFontType0': this.mimetype = 'font/opentype'; - var cff = (subtype == 'Type1C' || subtype == 'CIDFontType0C') ? + var cff = (subtype === 'Type1C' || subtype === 'CIDFontType0C') ? new CFFFont(file, properties) : new Type1Font(name, file, properties); adjustWidths(properties); @@ -18594,6 +16658,9 @@ var Font = (function FontClosure() { // Repair the TrueType file. It is can be damaged in the point of // view of the sanitizer data = this.checkAndRepair(name, file, properties); + if (this.isOpenType) { + type = 'OpenType'; + } break; default: @@ -18602,6 +16669,7 @@ var Font = (function FontClosure() { } this.data = data; + this.fontType = getFontType(type, subtype); // Transfer some properties again that could change during font conversion this.fontMatrix = properties.fontMatrix; @@ -18613,144 +16681,140 @@ var Font = (function FontClosure() { this.loading = true; } - var numFonts = 0; - function getUniqueName() { - return 'pdfFont' + numFonts++; + Font.getFontID = (function () { + var ID = 1; + return function Font_getFontID() { + return String(ID++); + }; + })(); + + function int16(b0, b1) { + return (b0 << 8) + b1; } - function stringToArray(str) { - var array = []; - for (var i = 0, ii = str.length; i < ii; ++i) - array[i] = str.charCodeAt(i); - - return array; - } - - function arrayToString(arr) { - var str = ''; - for (var i = 0, ii = arr.length; i < ii; ++i) - str += String.fromCharCode(arr[i]); - - return str; - } - - function int16(bytes) { - return (bytes[0] << 8) + (bytes[1] & 0xff); - } - - function int32(bytes) { - return (bytes[0] << 24) + (bytes[1] << 16) + - (bytes[2] << 8) + (bytes[3] & 0xff); - } - - function getMaxPower2(number) { - var maxPower = 0; - var value = number; - while (value >= 2) { - value /= 2; - maxPower++; - } - - value = 2; - for (var i = 1; i < maxPower; i++) - value *= 2; - return value; + function int32(b0, b1, b2, b3) { + return (b0 << 24) + (b1 << 16) + (b2 << 8) + b3; } function string16(value) { - return String.fromCharCode((value >> 8) & 0xff) + - String.fromCharCode(value & 0xff); + return String.fromCharCode((value >> 8) & 0xff, value & 0xff); } function safeString16(value) { // clamp value to the 16-bit int range - value = value > 0x7FFF ? 0x7FFF : value < -0x8000 ? -0x8000 : value; - return String.fromCharCode((value >> 8) & 0xff) + - String.fromCharCode(value & 0xff); + value = (value > 0x7FFF ? 0x7FFF : (value < -0x8000 ? -0x8000 : value)); + return String.fromCharCode((value >> 8) & 0xff, value & 0xff); } - function string32(value) { - return String.fromCharCode((value >> 24) & 0xff) + - String.fromCharCode((value >> 16) & 0xff) + - String.fromCharCode((value >> 8) & 0xff) + - String.fromCharCode(value & 0xff); + function isTrueTypeFile(file) { + var header = file.peekBytes(4); + return readUint32(header, 0) === 0x00010000; } - function createOpenTypeHeader(sfnt, file, numTables) { - // Windows hates the Mac TrueType sfnt version number - if (sfnt == 'true') - sfnt = string32(0x00010000); + /** + * Rebuilds the char code to glyph ID map by trying to replace the char codes + * with their unicode value. It also moves char codes that are in known + * problematic locations. + * @return {Object} Two properties: + * 'toFontChar' - maps original char codes(the value that will be read + * from commands such as show text) to the char codes that will be used in the + * font that we build + * 'charCodeToGlyphId' - maps the new font char codes to glyph ids + */ + function adjustMapping(charCodeToGlyphId, properties) { + var toUnicode = properties.toUnicode; + var isSymbolic = !!(properties.flags & FontFlags.Symbolic); + var isIdentityUnicode = + properties.toUnicode instanceof IdentityToUnicodeMap; + var isCidFontType2 = (properties.type === 'CIDFontType2'); + var newMap = Object.create(null); + var toFontChar = []; + var usedFontCharCodes = []; + var nextAvailableFontCharCode = PRIVATE_USE_OFFSET_START; + for (var originalCharCode in charCodeToGlyphId) { + originalCharCode |= 0; + var glyphId = charCodeToGlyphId[originalCharCode]; + var fontCharCode = originalCharCode; + // First try to map the value to a unicode position if a non identity map + // was created. + if (!isIdentityUnicode) { + if (toUnicode.get(originalCharCode) !== undefined) { + var unicode = toUnicode.get(fontCharCode); + // TODO: Try to map ligatures to the correct spot. + if (unicode.length === 1) { + fontCharCode = unicode.charCodeAt(0); + } + } else if (isCidFontType2) { + // For CIDFontType2, move characters not present in toUnicode + // to the private use area (fixes bug 1028735 and issue 4881). + fontCharCode = nextAvailableFontCharCode; + } + } + // Try to move control characters, special characters and already mapped + // characters to the private use area since they will not be drawn by + // canvas if left in their current position. Also, move characters if the + // font was symbolic and there is only an identity unicode map since the + // characters probably aren't in the correct position (fixes an issue + // with firefox and thuluthfont). + if ((usedFontCharCodes[fontCharCode] !== undefined || + fontCharCode <= 0x1f || // Control chars + fontCharCode === 0x7F || // Control char + fontCharCode === 0xAD || // Soft hyphen + (fontCharCode >= 0x80 && fontCharCode <= 0x9F) || // Control chars + // Prevent drawing characters in the specials unicode block. + (fontCharCode >= 0xFFF0 && fontCharCode <= 0xFFFF) || + (isSymbolic && isIdentityUnicode)) && + nextAvailableFontCharCode <= PRIVATE_USE_OFFSET_END) { // Room left. + // Loop to try and find a free spot in the private use area. + do { + fontCharCode = nextAvailableFontCharCode++; - // sfnt version (4 bytes) - var header = sfnt; + if (SKIP_PRIVATE_USE_RANGE_F000_TO_F01F && fontCharCode === 0xF000) { + fontCharCode = 0xF020; + nextAvailableFontCharCode = fontCharCode + 1; + } - // numTables (2 bytes) - header += string16(numTables); + } while (usedFontCharCodes[fontCharCode] !== undefined && + nextAvailableFontCharCode <= PRIVATE_USE_OFFSET_END); + } - // searchRange (2 bytes) - var tablesMaxPower2 = getMaxPower2(numTables); - var searchRange = tablesMaxPower2 * 16; - header += string16(searchRange); - - // entrySelector (2 bytes) - header += string16(Math.log(tablesMaxPower2) / Math.log(2)); - - // rangeShift (2 bytes) - header += string16(numTables * 16 - searchRange); - - file.file += header; - file.virtualOffset += header.length; + newMap[fontCharCode] = glyphId; + toFontChar[originalCharCode] = fontCharCode; + usedFontCharCodes[fontCharCode] = true; + } + return { + toFontChar: toFontChar, + charCodeToGlyphId: newMap, + nextAvailableFontCharCode: nextAvailableFontCharCode + }; } - function createTableEntry(file, tag, data) { - // offset - var offset = file.virtualOffset; - - // length - var length = data.length; - - // Per spec tables must be 4-bytes align so add padding as needed - while (data.length & 3) - data.push(0x00); - - while (file.virtualOffset & 3) - file.virtualOffset++; - - // checksum - var checksum = 0, n = data.length; - for (var i = 0; i < n; i += 4) - checksum = (checksum + int32([data[i], data[i + 1], data[i + 2], - data[i + 3]])) | 0; - - var tableEntry = (tag + string32(checksum) + - string32(offset) + string32(length)); - file.file += tableEntry; - file.virtualOffset += data.length; - } - - function getRanges(glyphs, deltas) { + function getRanges(glyphs) { // Array.sort() sorts by characters, not numerically, so convert to an // array of characters. var codes = []; - var length = glyphs.length; - for (var n = 0; n < length; ++n) - codes.push({ unicode: glyphs[n].unicode, code: n }); + for (var charCode in glyphs) { + codes.push({ fontCharCode: charCode | 0, glyphId: glyphs[charCode] }); + } codes.sort(function fontGetRangesSort(a, b) { - return a.unicode - b.unicode; + return a.fontCharCode - b.fontCharCode; }); // Split the sorted codes into ranges. var ranges = []; + var length = codes.length; for (var n = 0; n < length; ) { - var start = codes[n].unicode; - var codeIndices = [deltas ? deltas[codes[n].code] : codes[n].code + 1]; + var start = codes[n].fontCharCode; + var codeIndices = [codes[n].glyphId]; ++n; var end = start; - while (n < length && end + 1 == codes[n].unicode) { - codeIndices.push(deltas ? deltas[codes[n].code] : codes[n].code + 1); + while (n < length && end + 1 === codes[n].fontCharCode) { + codeIndices.push(codes[n].glyphId); ++end; ++n; - if (end === 0xFFFF) { break; } + if (end === 0xFFFF) { + break; + } } ranges.push([start, end, codeIndices]); } @@ -18758,9 +16822,8 @@ var Font = (function FontClosure() { return ranges; } - function createCmapTable(glyphs, deltas) { - var ranges = getRanges(glyphs, deltas); - + function createCmapTable(glyphs) { + var ranges = getRanges(glyphs); var numTables = ranges[ranges.length - 1][1] > 0xFFFF ? 2 : 1; var cmap = '\x00\x00' + // version string16(numTables) + // numTables @@ -18768,7 +16831,8 @@ var Font = (function FontClosure() { '\x00\x01' + // encodingID string32(4 + numTables * 8); // start of the table record - for (var i = ranges.length - 1; i >= 0; --i) { + var i, ii, j, jj; + for (i = ranges.length - 1; i >= 0; --i) { if (ranges[i][0] <= 0xFFFF) { break; } } var bmpLength = i + 1; @@ -18778,10 +16842,7 @@ var Font = (function FontClosure() { } var trailingRangesCount = ranges[i][1] < 0xFFFF ? 1 : 0; var segCount = bmpLength + trailingRangesCount; - var segCount2 = segCount * 2; - var searchRange = getMaxPower2(segCount) * 2; - var searchEntry = Math.log(segCount) / Math.log(2); - var rangeShift = 2 * segCount - searchRange; + var searchParams = OpenTypeFileBuilder.getSearchParams(segCount, 2); // Fill up the 4 parallel arrays describing the segments. var startCount = ''; @@ -18791,15 +16852,16 @@ var Font = (function FontClosure() { var glyphsIds = ''; var bias = 0; - for (var i = 0, ii = bmpLength; i < ii; i++) { - var range = ranges[i]; - var start = range[0]; - var end = range[1]; + var range, start, end, codes; + for (i = 0, ii = bmpLength; i < ii; i++) { + range = ranges[i]; + start = range[0]; + end = range[1]; startCount += string16(start); endCount += string16(end); - var codes = range[2]; + codes = range[2]; var contiguous = true; - for (var j = 1, jj = codes.length; j < jj; ++j) { + for (j = 1, jj = codes.length; j < jj; ++j) { if (codes[j] !== codes[j - 1] + 1) { contiguous = false; break; @@ -18812,7 +16874,7 @@ var Font = (function FontClosure() { idDeltas += string16(0); idRangeOffsets += string16(offset); - for (var j = 0, jj = codes.length; j < jj; ++j) { + for (j = 0, jj = codes.length; j < jj; ++j) { glyphsIds += string16(codes[j]); } } else { @@ -18831,10 +16893,10 @@ var Font = (function FontClosure() { } var format314 = '\x00\x00' + // language - string16(segCount2) + - string16(searchRange) + - string16(searchEntry) + - string16(rangeShift) + + string16(2 * segCount) + + string16(searchParams.range) + + string16(searchParams.entry) + + string16(searchParams.rangeShift) + endCount + '\x00\x00' + startCount + idDeltas + idRangeOffsets + glyphsIds; @@ -18846,14 +16908,14 @@ var Font = (function FontClosure() { string32(4 + numTables * 8 + 4 + format314.length); // start of the table record format31012 = ''; - for (var i = 0, ii = ranges.length; i < ii; i++) { - var range = ranges[i]; - var start = range[0]; - var codes = range[2]; + for (i = 0, ii = ranges.length; i < ii; i++) { + range = ranges[i]; + start = range[0]; + codes = range[2]; var code = codes[0]; - for (var j = 1, jj = codes.length; j < jj; ++j) { + for (j = 1, jj = codes.length; j < jj; ++j) { if (codes[j] !== codes[j - 1] + 1) { - var end = range[0] + j - 1; + end = range[0] + j - 1; format31012 += string32(start) + // startCharCode string32(end) + // endCharCode string32(code); // startGlyphID @@ -18872,29 +16934,28 @@ var Font = (function FontClosure() { string32(format31012.length / 12); // nGroups } - return stringToArray(cmap + - '\x00\x04' + // format - string16(format314.length + 4) + // length - format314 + header31012 + format31012); + return cmap + '\x00\x04' + // format + string16(format314.length + 4) + // length + format314 + header31012 + format31012; } function validateOS2Table(os2) { var stream = new Stream(os2.data); - var version = int16(stream.getBytes(2)); + var version = stream.getUint16(); // TODO verify all OS/2 tables fields, but currently we validate only those // that give us issues stream.getBytes(60); // skipping type, misc sizes, panose, unicode ranges - var selection = int16(stream.getBytes(2)); + var selection = stream.getUint16(); if (version < 4 && (selection & 0x0300)) { return false; } - var firstChar = int16(stream.getBytes(2)); - var lastChar = int16(stream.getBytes(2)); + var firstChar = stream.getUint16(); + var lastChar = stream.getUint16(); if (firstChar > lastChar) { return false; } stream.getBytes(6); // skipping sTypoAscender/Descender/LineGap - var usWinAscent = int16(stream.getBytes(2)); + var usWinAscent = stream.getUint16(); if (usWinAscent === 0) { // makes font unreadable by windows return false; } @@ -18922,12 +16983,14 @@ var Font = (function FontClosure() { var lastCharIndex = 0; if (charstrings) { - for (var i = 0; i < charstrings.length; ++i) { - var code = charstrings[i].unicode; - if (firstCharIndex > code || !firstCharIndex) + for (var code in charstrings) { + code |= 0; + if (firstCharIndex > code || !firstCharIndex) { firstCharIndex = code; - if (lastCharIndex < code) + } + if (lastCharIndex < code) { lastCharIndex = code; + } var position = getUnicodeRangeFor(code); if (position < 32) { @@ -18949,18 +17012,18 @@ var Font = (function FontClosure() { } var bbox = properties.bbox || [0, 0, 0, 0]; - var unitsPerEm = override.unitsPerEm || - 1 / (properties.fontMatrix || FONT_IDENTITY_MATRIX)[0]; + var unitsPerEm = (override.unitsPerEm || + 1 / (properties.fontMatrix || FONT_IDENTITY_MATRIX)[0]); // if the font units differ to the PDF glyph space units // then scale up the values - var scale = properties.ascentScaled ? 1.0 : - unitsPerEm / PDF_GLYPH_SPACE_UNITS; + var scale = (properties.ascentScaled ? 1.0 : + unitsPerEm / PDF_GLYPH_SPACE_UNITS); - var typoAscent = override.ascent || Math.round(scale * - (properties.ascent || bbox[3])); - var typoDescent = override.descent || Math.round(scale * - (properties.descent || bbox[1])); + var typoAscent = (override.ascent || + Math.round(scale * (properties.ascent || bbox[3]))); + var typoDescent = (override.descent || + Math.round(scale * (properties.descent || bbox[1]))); if (typoDescent > 0 && properties.descent > 0 && bbox[1] < 0) { typoDescent = -typoDescent; // fixing incorrect descent } @@ -19011,15 +17074,15 @@ var Font = (function FontClosure() { function createPostTable(properties) { var angle = Math.floor(properties.italicAngle * (Math.pow(2, 16))); - return '\x00\x03\x00\x00' + // Version number - string32(angle) + // italicAngle - '\x00\x00' + // underlinePosition - '\x00\x00' + // underlineThickness - string32(properties.fixedPitch) + // isFixedPitch - '\x00\x00\x00\x00' + // minMemType42 - '\x00\x00\x00\x00' + // maxMemType42 - '\x00\x00\x00\x00' + // minMemType1 - '\x00\x00\x00\x00'; // maxMemType1 + return ('\x00\x03\x00\x00' + // Version number + string32(angle) + // italicAngle + '\x00\x00' + // underlinePosition + '\x00\x00' + // underlineThickness + string32(properties.fixedPitch) + // isFixedPitch + '\x00\x00\x00\x00' + // minMemType42 + '\x00\x00\x00\x00' + // maxMemType42 + '\x00\x00\x00\x00' + // minMemType1 + '\x00\x00\x00\x00'); // maxMemType1 } function createNameTable(name, proto) { @@ -19043,13 +17106,15 @@ var Font = (function FontClosure() { // Mac want 1-byte per character strings while Windows want // 2-bytes per character, so duplicate the names table var stringsUnicode = []; - for (var i = 0, ii = strings.length; i < ii; i++) { - var str = proto[1][i] || strings[i]; + var i, ii, j, jj, str; + for (i = 0, ii = strings.length; i < ii; i++) { + str = proto[1][i] || strings[i]; - var strUnicode = ''; - for (var j = 0, jj = str.length; j < jj; j++) - strUnicode += string16(str.charCodeAt(j)); - stringsUnicode.push(strUnicode); + var strBufUnicode = []; + for (j = 0, jj = str.length; j < jj; j++) { + strBufUnicode.push(string16(str.charCodeAt(j))); + } + stringsUnicode.push(strBufUnicode.join('')); } var names = [strings, stringsUnicode]; @@ -19065,10 +17130,10 @@ var Font = (function FontClosure() { // Build the name records field var strOffset = 0; - for (var i = 0, ii = platforms.length; i < ii; i++) { + for (i = 0, ii = platforms.length; i < ii; i++) { var strs = names[i]; - for (var j = 0, jj = strs.length; j < jj; j++) { - var str = strs[j]; + for (j = 0, jj = strs.length; j < jj; j++) { + str = strs[j]; var nameRecord = platforms[i] + // platform ID encodings[i] + // encoding ID @@ -19085,37 +17150,6 @@ var Font = (function FontClosure() { return nameTable; } - // Normalize the charcodes in the cmap table into unicode values - // that will work with the (3, 1) cmap table we will write out. - function cmapCharcodeToUnicode(charcode, symbolic, platformId, encodingId) { - var unicode; - if (symbolic) { - // These codes will be shifted into the range - // SYMBOLIC_FONT_GLYPH_OFFSET to (SYMBOLIC_FONT_GLYPH_OFFSET + 0xFF) - // so that they are not in the control character range that could - // be displayed as spaces by browsers. - if (platformId === 3 && encodingId === 0 || - platformId === 1 && encodingId === 0) { - unicode = SYMBOLIC_FONT_GLYPH_OFFSET | (charcode & 0xFF); - } - } else { - if (platformId === 3 && encodingId === 1) { - // A (3, 1) table is alredy unicode (Microsoft Unicode format) - unicode = charcode; - } else if (platformId === 1 && encodingId === 0) { - // TODO(mack): Should apply the changes to convert the - // MacRomanEncoding to Mac OS Roman encoding in 9.6.6.4 - // table 115 of the pdf spec - var glyphName = Encodings.MacRomanEncoding[charcode]; - if (glyphName) { - unicode = GlyphsUnicode[glyphName]; - } - } - } - return unicode; - } - - Font.prototype = { name: null, font: null, @@ -19129,23 +17163,20 @@ var Font = (function FontClosure() { exportData: function Font_exportData() { var data = {}; for (var i in this) { - if (this.hasOwnProperty(i)) + if (this.hasOwnProperty(i)) { data[i] = this[i]; + } } return data; }, checkAndRepair: function Font_checkAndRepair(name, font, properties) { function readTableEntry(file) { - var tag = file.getBytes(4); - tag = String.fromCharCode(tag[0]) + - String.fromCharCode(tag[1]) + - String.fromCharCode(tag[2]) + - String.fromCharCode(tag[3]); + var tag = bytesToString(file.getBytes(4)); - var checksum = int32(file.getBytes(4)); - var offset = int32(file.getBytes(4)); - var length = int32(file.getBytes(4)); + var checksum = file.getInt32(); + var offset = file.getInt32() >>> 0; + var length = file.getInt32() >>> 0; // Read the table associated data var previousPosition = file.pos; @@ -19154,7 +17185,7 @@ var Font = (function FontClosure() { var data = file.getBytes(length); file.pos = previousPosition; - if (tag == 'head') { + if (tag === 'head') { // clearing checksum adjustment data[8] = data[9] = data[10] = data[11] = 0; data[17] |= 0x20; //Set font optimized for cleartype flag @@ -19171,116 +17202,57 @@ var Font = (function FontClosure() { function readOpenTypeHeader(ttf) { return { - version: arrayToString(ttf.getBytes(4)), - numTables: int16(ttf.getBytes(2)), - searchRange: int16(ttf.getBytes(2)), - entrySelector: int16(ttf.getBytes(2)), - rangeShift: int16(ttf.getBytes(2)) + version: bytesToString(ttf.getBytes(4)), + numTables: ttf.getUint16(), + searchRange: ttf.getUint16(), + entrySelector: ttf.getUint16(), + rangeShift: ttf.getUint16() }; } - function createGlyphNameMap(glyphs, ids, properties) { - var glyphNames = properties.glyphNames; - if (!glyphNames) { - properties.glyphNameMap = {}; - return; - } - var glyphsLength = glyphs.length; - var glyphNameMap = {}; - var encoding = []; - for (var i = 0; i < glyphsLength; ++i) { - var glyphName = glyphNames[ids[i]]; - if (!glyphName) - continue; - var unicode = glyphs[i].unicode; - glyphNameMap[glyphName] = unicode; - var code = glyphs[i].code; - encoding[code] = glyphName; - } - properties.glyphNameMap = glyphNameMap; - if (properties.overridableEncoding) - properties.baseEncoding = encoding; - } - /** * Read the appropriate subtable from the cmap according to 9.6.6.4 from * PDF spec */ - function readCmapTable(cmap, font, hasEncoding, isSymbolicFont) { + function readCmapTable(cmap, font, isSymbolicFont) { + var segment; var start = (font.start ? font.start : 0) + cmap.offset; font.pos = start; - var version = int16(font.getBytes(2)); - var numTables = int16(font.getBytes(2)); + var version = font.getUint16(); + var numTables = font.getUint16(); var potentialTable; - var foundPreferredTable; - // There's an order of preference in terms of which cmap subtable we - // want to use. So scan through them to find our preferred table. + var canBreak = false; + // There's an order of preference in terms of which cmap subtable to + // use: + // - non-symbolic fonts the preference is a 3,1 table then a 1,0 table + // - symbolic fonts the preference is a 3,0 table then a 1,0 table + // The following takes advantage of the fact that the tables are sorted + // to work. for (var i = 0; i < numTables; i++) { - var platformId = int16(font.getBytes(2)); - var encodingId = int16(font.getBytes(2)); - var offset = int32(font.getBytes(4)); + var platformId = font.getUint16(); + var encodingId = font.getUint16(); + var offset = font.getInt32() >>> 0; var useTable = false; - var canBreak = false; - // The following block implements the following from the spec: - // - // When the font has no Encoding entry, or the font descriptor’s - // Symbolic flag is set (in which case the Encoding entry - // is ignored), this shall occur: - // - If the font contains a (3, 0) subtable, the range of - // - Otherwise, the (1, 0) subtable will be used. - // Otherwise, if the font does have an encoding: - // - Use the (3, 1) cmap subtable - // - Otherwise, use the (1, 0) subtable if present - // - // The following diverges slightly from the above spec in order - // to handle the case that hasEncoding and isSymbolicFont are both - // true. In this, based on the ordering of the rules in the spec, - // my interpretation is that we should be acting as if the font is - // symbolic. - // - // However, in this case, the test pdf 'preistabelle.pdf' - // is interpreting this case as a non-symbolic font. In this case - // though, 'presitabelle.pdf' does contain a (3, 1) table and does - // not contain a (3, 0) table which indicates it is non-symbolic. - // - // Thus, I am using this heurisitic of looking at which table is - // found to truly determine whether or not the font is symbolic. - // That is, if the specific symbolic/non-symbolic font specific - // tables (3, 0) or (3, 1) is found, that information is used for - // deciding if the font is symbolic or not. - // - // TODO(mack): This section needs some more thought on whether the - // heuristic is good enough. For now, it passes all the regression - // tests. - if (isSymbolicFont && platformId === 3 && encodingId === 0) { + if (platformId === 1 && encodingId === 0) { + useTable = true; + // Continue the loop since there still may be a higher priority + // table. + } else if (!isSymbolicFont && platformId === 3 && encodingId === 1) { useTable = true; canBreak = true; - foundPreferredTable = true; - } else if (hasEncoding && platformId === 3 && encodingId === 1) { + } else if (isSymbolicFont && platformId === 3 && encodingId === 0) { useTable = true; canBreak = true; - foundPreferredTable = true; - // Update the isSymbolicFont based on this heuristic - isSymbolicFont = false; - } else if (platformId === 1 && encodingId === 0 && - !foundPreferredTable) { - useTable = true; - foundPreferredTable = true; - } else if (!potentialTable) { - // We will use an arbitrary table if we cannot find a preferred - // table - useTable = true; } if (useTable) { potentialTable = { platformId: platformId, encodingId: encodingId, - offset: offset, - isSymbolicFont: isSymbolicFont + offset: offset }; } if (canBreak) { @@ -19289,35 +17261,33 @@ var Font = (function FontClosure() { } if (!potentialTable) { - error('Could not find a cmap table'); - return; - } - - if (!foundPreferredTable) { - warn('Did not find a cmap of suitable format. Interpreting (' + - potentialTable.platformId + ', ' + potentialTable.encodingId + - ') as (3, 1) table'); - potentialTable.platformId = 3; - potentialTable.encodingId = 1; + warn('Could not find a preferred cmap table.'); + return { + platformId: -1, + encodingId: -1, + mappings: [], + hasShortCmap: false + }; } font.pos = start + potentialTable.offset; - var format = int16(font.getBytes(2)); - var length = int16(font.getBytes(2)); - var language = int16(font.getBytes(2)); + var format = font.getUint16(); + var length = font.getUint16(); + var language = font.getUint16(); var hasShortCmap = false; var mappings = []; + var j, glyphId; // TODO(mack): refactor this cmap subtable reading logic out if (format === 0) { - for (var j = 0; j < 256; j++) { + for (j = 0; j < 256; j++) { var index = font.getByte(); if (!index) { continue; } mappings.push({ - charcode: j, + charCode: j, glyphId: index }); } @@ -19325,25 +17295,25 @@ var Font = (function FontClosure() { } else if (format === 4) { // re-creating the table in format 4 since the encoding // might be changed - var segCount = (int16(font.getBytes(2)) >> 1); + var segCount = (font.getUint16() >> 1); font.getBytes(6); // skipping range fields var segIndex, segments = []; for (segIndex = 0; segIndex < segCount; segIndex++) { - segments.push({ end: int16(font.getBytes(2)) }); + segments.push({ end: font.getUint16() }); } - font.getBytes(2); + font.getUint16(); for (segIndex = 0; segIndex < segCount; segIndex++) { - segments[segIndex].start = int16(font.getBytes(2)); + segments[segIndex].start = font.getUint16(); } for (segIndex = 0; segIndex < segCount; segIndex++) { - segments[segIndex].delta = int16(font.getBytes(2)); + segments[segIndex].delta = font.getUint16(); } var offsetsCount = 0; for (segIndex = 0; segIndex < segCount; segIndex++) { - var segment = segments[segIndex]; - var rangeOffset = int16(font.getBytes(2)); + segment = segments[segIndex]; + var rangeOffset = font.getUint16(); if (!rangeOffset) { segment.offsetIndex = -1; continue; @@ -19352,53 +17322,53 @@ var Font = (function FontClosure() { var offsetIndex = (rangeOffset >> 1) - (segCount - segIndex); segment.offsetIndex = offsetIndex; offsetsCount = Math.max(offsetsCount, offsetIndex + - segment.end - segment.start + 1); + segment.end - segment.start + 1); } var offsets = []; - for (var j = 0; j < offsetsCount; j++) { - offsets.push(int16(font.getBytes(2))); + for (j = 0; j < offsetsCount; j++) { + offsets.push(font.getUint16()); } for (segIndex = 0; segIndex < segCount; segIndex++) { - var segment = segments[segIndex]; - var start = segment.start, end = segment.end; - var delta = segment.delta, offsetIndex = segment.offsetIndex; + segment = segments[segIndex]; + start = segment.start; + var end = segment.end; + var delta = segment.delta; + offsetIndex = segment.offsetIndex; - for (var j = start; j <= end; j++) { - if (j == 0xFFFF) { + for (j = start; j <= end; j++) { + if (j === 0xFFFF) { continue; } - var glyphId = offsetIndex < 0 ? j : - offsets[offsetIndex + j - start]; + glyphId = (offsetIndex < 0 ? + j : offsets[offsetIndex + j - start]); glyphId = (glyphId + delta) & 0xFFFF; if (glyphId === 0) { continue; } mappings.push({ - charcode: j, + charCode: j, glyphId: glyphId }); } } - } else if (format == 6) { + } else if (format === 6) { // Format 6 is a 2-bytes dense mapping, which means the font data // lives glue together even if they are pretty far in the unicode // table. (This looks weird, so I can have missed something), this // works on Linux but seems to fails on Mac so let's rewrite the // cmap table to a 3-1-4 style - var firstCode = int16(font.getBytes(2)); - var entryCount = int16(font.getBytes(2)); + var firstCode = font.getUint16(); + var entryCount = font.getUint16(); - var glyphs = []; - var ids = []; - for (var j = 0; j < entryCount; j++) { - var glyphId = int16(font.getBytes(2)); - var charcode = firstCode + j; + for (j = 0; j < entryCount; j++) { + glyphId = font.getUint16(); + var charCode = firstCode + j; mappings.push({ - charcode: charcode, + charCode: charCode, glyphId: glyphId }); } @@ -19408,10 +17378,10 @@ var Font = (function FontClosure() { // removing duplicate entries mappings.sort(function (a, b) { - return a.charcode - b.charcode; + return a.charCode - b.charCode; }); - for (var i = 1; i < mappings.length; i++) { - if (mappings[i - 1].charcode === mappings[i].charcode) { + for (i = 1; i < mappings.length; i++) { + if (mappings[i - 1].charCode === mappings[i].charCode) { mappings.splice(i, 1); i--; } @@ -19420,7 +17390,6 @@ var Font = (function FontClosure() { return { platformId: potentialTable.platformId, encodingId: potentialTable.encodingId, - isSymbolicFont: potentialTable.isSymbolicFont, mappings: mappings, hasShortCmap: hasShortCmap }; @@ -19436,7 +17405,7 @@ var Font = (function FontClosure() { font.pos = (font.start ? font.start : 0) + header.offset; font.pos += header.length - 2; - var numOfMetrics = int16(font.getBytes(2)); + var numOfMetrics = font.getUint16(); if (numOfMetrics > numGlyphs) { info('The numOfMetrics (' + numOfMetrics + ') should not be ' + @@ -19452,13 +17421,12 @@ var Font = (function FontClosure() { ((metrics.length - numOfMetrics * 4) >> 1); if (numMissing > 0) { - font.pos = (font.start ? font.start : 0) + metrics.offset; - var entries = ''; - for (var i = 0, ii = metrics.length; i < ii; i++) - entries += String.fromCharCode(font.getByte()); - for (var i = 0; i < numMissing; i++) - entries += '\x00\x00'; - metrics.data = stringToArray(entries); + // For each missing glyph, we set both the width and lsb to 0 (zero). + // Since we need to add two properties for each glyph, this explains + // the use of |numMissing * 2| when initializing the typed array. + var entries = new Uint8Array(metrics.length + numMissing * 2); + entries.set(metrics.data); + metrics.data = entries; } } @@ -19476,8 +17444,8 @@ var Font = (function FontClosure() { return glyf.length; } - var j = 10, flagsCount = 0; - for (var i = 0; i < contoursCount; i++) { + var i, j = 10, flagsCount = 0; + for (i = 0; i < contoursCount; i++) { var endPoint = (glyf[j] << 8) | glyf[j + 1]; flagsCount = endPoint + 1; j += 2; @@ -19489,7 +17457,7 @@ var Font = (function FontClosure() { var instructionsEnd = j; // validating flags var coordinatesLength = 0; - for (var i = 0; i < flagsCount; i++) { + for (i = 0; i < flagsCount; i++) { var flag = glyf[j++]; if (flag & 0xC0) { // reserved flags must be zero, cleaning up @@ -19540,7 +17508,7 @@ var Font = (function FontClosure() { // Validate version: // Should always be 0x00010000 - var version = int32([data[0], data[1], data[2], data[3]]); + var version = int32(data[0], data[1], data[2], data[3]); if (version >> 16 !== 1) { info('Attempting to fix invalid version in head table: ' + version); data[0] = 0; @@ -19549,7 +17517,7 @@ var Font = (function FontClosure() { data[3] = 0; } - var indexToLocFormat = int16([data[50], data[51]]); + var indexToLocFormat = int16(data[50], data[51]); if (indexToLocFormat < 0 || indexToLocFormat > 1) { info('Attempting to fix invalid indexToLocFormat in head table: ' + indexToLocFormat); @@ -19620,8 +17588,15 @@ var Font = (function FontClosure() { var startOffset = itemDecode(locaData, 0); var writeOffset = 0; itemEncode(locaData, 0, writeOffset); - for (var i = 0, j = itemSize; i < numGlyphs; i++, j += itemSize) { + var i, j; + for (i = 0, j = itemSize; i < numGlyphs; i++, j += itemSize) { var endOffset = itemDecode(locaData, j); + if (endOffset > oldGlyfDataLength && + ((oldGlyfDataLength + 3) & ~3) === endOffset) { + // Aspose breaks fonts by aligning the glyphs to the qword, but not + // the glyf table size, which makes last glyph out of range. + endOffset = oldGlyfDataLength; + } if (endOffset > oldGlyfDataLength) { // glyph end offset points outside glyf data, rejecting the glyph itemEncode(locaData, j, writeOffset); @@ -19641,8 +17616,9 @@ var Font = (function FontClosure() { // to have single glyph with one point var simpleGlyph = new Uint8Array( [0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 49, 0]); - for (var i = 0, j = itemSize; i < numGlyphs; i++, j += itemSize) + for (i = 0, j = itemSize; i < numGlyphs; i++, j += itemSize) { itemEncode(locaData, j, simpleGlyph.length); + } glyf.data = simpleGlyph; return; } @@ -19668,25 +17644,27 @@ var Font = (function FontClosure() { font.pos = start; var length = post.length, end = start + length; - var version = int32(font.getBytes(4)); + var version = font.getInt32(); // skip rest to the tables font.getBytes(28); var glyphNames; var valid = true; + var i; + switch (version) { case 0x00010000: glyphNames = MacStandardGlyphOrdering; break; case 0x00020000: - var numGlyphs = int16(font.getBytes(2)); - if (numGlyphs != maxpNumGlyphs) { + var numGlyphs = font.getUint16(); + if (numGlyphs !== maxpNumGlyphs) { valid = false; break; } var glyphNameIndexes = []; - for (var i = 0; i < numGlyphs; ++i) { - var index = int16(font.getBytes(2)); + for (i = 0; i < numGlyphs; ++i) { + var index = font.getUint16(); if (index >= 32768) { valid = false; break; @@ -19697,16 +17675,17 @@ var Font = (function FontClosure() { break; } var customNames = []; + var strBuf = []; while (font.pos < end) { var stringLength = font.getByte(); - var string = ''; - for (var i = 0; i < stringLength; ++i) { - string += String.fromCharCode(font.getByte()); + strBuf.length = stringLength; + for (i = 0; i < stringLength; ++i) { + strBuf[i] = String.fromCharCode(font.getByte()); } - customNames.push(string); + customNames.push(strBuf.join('')); } glyphNames = []; - for (var i = 0; i < numGlyphs; ++i) { + for (i = 0; i < numGlyphs; ++i) { var j = glyphNameIndexes[i]; if (j < 258) { glyphNames.push(MacStandardGlyphOrdering[j]); @@ -19732,33 +17711,35 @@ var Font = (function FontClosure() { var names = [[], []]; var length = nameTable.length, end = start + length; - var format = int16(font.getBytes(2)); + var format = font.getUint16(); var FORMAT_0_HEADER_LENGTH = 6; if (format !== 0 || length < FORMAT_0_HEADER_LENGTH) { // unsupported name table format or table "too" small return names; } - var numRecords = int16(font.getBytes(2)); - var stringsStart = int16(font.getBytes(2)); + var numRecords = font.getUint16(); + var stringsStart = font.getUint16(); var records = []; var NAME_RECORD_LENGTH = 12; - for (var i = 0; i < numRecords && + var i, ii; + + for (i = 0; i < numRecords && font.pos + NAME_RECORD_LENGTH <= end; i++) { var r = { - platform: int16(font.getBytes(2)), - encoding: int16(font.getBytes(2)), - language: int16(font.getBytes(2)), - name: int16(font.getBytes(2)), - length: int16(font.getBytes(2)), - offset: int16(font.getBytes(2)) + platform: font.getUint16(), + encoding: font.getUint16(), + language: font.getUint16(), + name: font.getUint16(), + length: font.getUint16(), + offset: font.getUint16() }; // using only Macintosh and Windows platform/encoding names - if ((r.platform == 1 && r.encoding === 0 && r.language === 0) || - (r.platform == 3 && r.encoding == 1 && r.language == 0x409)) { + if ((r.platform === 1 && r.encoding === 0 && r.language === 0) || + (r.platform === 3 && r.encoding === 1 && r.language === 0x409)) { records.push(r); } } - for (var i = 0, ii = records.length; i < ii; i++) { + for (i = 0, ii = records.length; i < ii; i++) { var record = records[i]; var pos = start + stringsStart + record.offset; if (pos + record.length > end) { @@ -19766,12 +17747,11 @@ var Font = (function FontClosure() { } font.pos = pos; var nameIndex = record.name; - var encoding = record.encoding ? 1 : 0; if (record.encoding) { // unicode var str = ''; for (var j = 0, jj = record.length; j < jj; j += 2) { - str += String.fromCharCode(int16(font.getBytes(2))); + str += String.fromCharCode(font.getUint16()); } names[1][nameIndex] = str; } else { @@ -19795,7 +17775,7 @@ var Font = (function FontClosure() { function sanitizeTTProgram(table, ttContext) { var data = table.data; - var i = 0, n, lastEndf = 0, lastDeff = 0; + var i = 0, j, n, b, funcId, pc, lastEndf = 0, lastDeff = 0; var stack = []; var callstack = []; var functionsCalled = []; @@ -19811,7 +17791,7 @@ var Font = (function FontClosure() { if (inFDEF || inELSE) { i += n; } else { - for (var j = 0; j < n; j++) { + for (j = 0; j < n; j++) { stack.push(data[i++]); } } @@ -19820,8 +17800,8 @@ var Font = (function FontClosure() { if (inFDEF || inELSE) { i += n * 2; } else { - for (var j = 0; j < n; j++) { - var b = data[i++]; + for (j = 0; j < n; j++) { + b = data[i++]; stack.push((b << 8) | data[i++]); } } @@ -19830,7 +17810,7 @@ var Font = (function FontClosure() { if (inFDEF || inELSE) { i += n; } else { - for (var j = 0; j < n; j++) { + for (j = 0; j < n; j++) { stack.push(data[i++]); } } @@ -19839,15 +17819,15 @@ var Font = (function FontClosure() { if (inFDEF || inELSE) { i += n * 2; } else { - for (var j = 0; j < n; j++) { - var b = data[i++]; + for (j = 0; j < n; j++) { + b = data[i++]; stack.push((b << 8) | data[i++]); } } } else if (op === 0x2B && !tooComplexToFollowFunctions) { // CALL if (!inFDEF && !inELSE) { // collecting inforamtion about which functions are used - var funcId = stack[stack.length - 1]; + funcId = stack[stack.length - 1]; ttContext.functionsUsed[funcId] = true; if (funcId in ttContext.functionsStackDeltas) { stack.length += ttContext.functionsStackDeltas[funcId]; @@ -19855,7 +17835,7 @@ var Font = (function FontClosure() { functionsCalled.indexOf(funcId) < 0) { callstack.push({data: data, i: i, stackTop: stack.length - 1}); functionsCalled.push(funcId); - var pc = ttContext.functionsDefined[funcId]; + pc = ttContext.functionsDefined[funcId]; if (!pc) { warn('TT: CALL non-existent function'); ttContext.hintsValid = false; @@ -19873,20 +17853,20 @@ var Font = (function FontClosure() { inFDEF = true; // collecting inforamtion about which functions are defined lastDeff = i; - var funcId = stack.pop(); + funcId = stack.pop(); ttContext.functionsDefined[funcId] = {data: data, i: i}; } else if (op === 0x2D) { // ENDF - end of function if (inFDEF) { inFDEF = false; lastEndf = i; } else { - var pc = callstack.pop(); + pc = callstack.pop(); if (!pc) { warn('TT: ENDF bad stack'); ttContext.hintsValid = false; return; } - var funcId = functionsCalled.pop(); + funcId = functionsCalled.pop(); data = pc.data; i = pc.i; ttContext.functionsStackDeltas[funcId] = @@ -19910,9 +17890,13 @@ var Font = (function FontClosure() { } --ifLevel; } else if (op === 0x1C) { // JMPR - var offset = stack[stack.length - 1]; - // only jumping forward to prevent infinite loop - if (offset > 0) { i += offset - 1; } + if (!inFDEF && !inELSE) { + var offset = stack[stack.length - 1]; + // only jumping forward to prevent infinite loop + if (offset > 0) { + i += offset - 1; + } + } } // Adjusting stack not extactly, but just enough to get function id if (!inFDEF && !inELSE) { @@ -19952,6 +17936,11 @@ var Font = (function FontClosure() { if (ttContext.tooComplexToFollowFunctions) { return; } + if (ttContext.functionsDefined.length > maxFunctionDefs) { + warn('TT: more functions defined than expected'); + ttContext.hintsValid = false; + return; + } for (var j = 0, jj = ttContext.functionsUsed.length; j < jj; j++) { if (j > maxFunctionDefs) { warn('TT: invalid function id: ' + j); @@ -19970,13 +17959,14 @@ var Font = (function FontClosure() { if (content.length > 1) { // concatenating the content items var newLength = 0; - for (var j = 0, jj = content.length; j < jj; j++) { + var j, jj; + for (j = 0, jj = content.length; j < jj; j++) { newLength += content[j].length; } newLength = (newLength + 3) & ~3; var result = new Uint8Array(newLength); var pos = 0; - for (var j = 0, jj = content.length; j < jj; j++) { + for (j = 0, jj = content.length; j < jj; j++) { result.set(content[j], pos); pos += content[j].length; } @@ -20018,11 +18008,13 @@ var Font = (function FontClosure() { var header = readOpenTypeHeader(font); var numTables = header.numTables; + var cff, cffFile; var tables = { 'OS/2': null, cmap: null, head: null, hhea: null, - hmtx: null, maxp: null, name: null, post: null}; + hmtx: null, maxp: null, name: null, post: null }; + var table; for (var i = 0; i < numTables; i++) { - var table = readTableEntry(font); + table = readTableEntry(font); if (VALID_TABLES.indexOf(table.tag) < 0) { continue; // skipping table if it's not a required or optional table } @@ -20037,8 +18029,8 @@ var Font = (function FontClosure() { // OpenType font if (!tables.head || !tables.hhea || !tables.maxp || !tables.post) { // no major tables: throwing everything at CFFFont - var cffFile = new Stream(tables['CFF '].data); - var cff = new CFFFont(cffFile, properties); + cffFile = new Stream(tables['CFF '].data); + cff = new CFFFont(cffFile, properties); return this.convert(name, cff, properties); } @@ -20048,10 +18040,12 @@ var Font = (function FontClosure() { delete tables.fpgm; delete tables.prep; delete tables['cvt ']; + this.isOpenType = true; } else { if (!tables.glyf || !tables.loca) { error('Required "glyf" or "loca" tables are not found'); } + this.isOpenType = false; } if (!tables.maxp) { @@ -20059,24 +18053,24 @@ var Font = (function FontClosure() { } font.pos = (font.start || 0) + tables.maxp.offset; - var version = int32(font.getBytes(4)); - var numGlyphs = int16(font.getBytes(2)); + var version = font.getInt32(); + var numGlyphs = font.getUint16(); var maxFunctionDefs = 0; if (version >= 0x00010000 && tables.maxp.length >= 22) { // maxZones can be invalid font.pos += 8; - var maxZones = int16(font.getBytes(2)); + var maxZones = font.getUint16(); if (maxZones > 2) { // reset to 2 if font has invalid maxZones tables.maxp.data[14] = 0; tables.maxp.data[15] = 2; } font.pos += 4; - maxFunctionDefs = int16(font.getBytes(2)); + maxFunctionDefs = font.getUint16(); } var dupFirstEntry = false; - if (properties.type == 'CIDFontType2' && properties.toUnicode && - properties.toUnicode[0] > '\u0000') { + if (properties.type === 'CIDFontType2' && properties.toUnicode && + properties.toUnicode.get(0) > '\u0000') { // oracle's defect (see 3427), duplicating first entry dupFirstEntry = true; numGlyphs++; @@ -20092,24 +18086,6 @@ var Font = (function FontClosure() { delete tables['cvt ']; } - // Tables needs to be written by ascendant alphabetic order - var tablesNames = Object.keys(tables); - tablesNames.sort(); - - numTables = tablesNames.length; - - // header and new offsets. Table entry information is appended to the - // end of file. The virtualOffset represents where to put the actual - // data of a particular table; - var ttf = { - file: '', - virtualOffset: numTables * (4 * 4) - }; - - // The new numbers of tables will be the last one plus the num - // of missing tables - createOpenTypeHeader(header.version, ttf, numTables); - // Ensure the hmtx table contains the advance width and // sidebearings information for numGlyphs in the maxp table sanitizeMetrics(font, tables.hhea, tables.hmtx, numGlyphs); @@ -20121,8 +18097,8 @@ var Font = (function FontClosure() { sanitizeHead(tables.head, numGlyphs, isTrueType ? tables.loca.length : 0); if (isTrueType) { - var isGlyphLocationsLong = int16([tables.head.data[50], - tables.head.data[51]]); + var isGlyphLocationsLong = int16(tables.head.data[50], + tables.head.data[51]); sanitizeGlyphLocations(tables.loca, tables.glyf, numGlyphs, isGlyphLocationsLong, hintsValid, dupFirstEntry); } @@ -20146,244 +18122,142 @@ var Font = (function FontClosure() { } } - var glyphs, ids; - if (properties.type == 'CIDFontType2') { - // Replace the old CMAP table with a shiny new one - // Type2 composite fonts map characters directly to glyphs so the cmap - // table must be replaced. - // canvas fillText will reencode some characters even if the font has a - // glyph at that position - e.g. newline is converted to a space and - // U+00AD (soft hyphen) is not drawn. - // So, offset all the glyphs by 0xFF to avoid these cases and use - // the encoding to map incoming characters to the new glyph positions - if (!tables.cmap) { - tables.cmap = { - tag: 'cmap', - data: null - }; - } - + var charCodeToGlyphId = [], charCode; + if (properties.type === 'CIDFontType2') { var cidToGidMap = properties.cidToGidMap || []; - var gidToCidMap = [0]; - if (cidToGidMap.length > 0) { - for (var j = cidToGidMap.length - 1; j >= 0; j--) { - var gid = cidToGidMap[j]; - if (gid) - gidToCidMap[gid] = j; + var cidToGidMapLength = cidToGidMap.length; + properties.cMap.forEach(function(charCode, cid) { + assert(cid <= 0xffff, 'Max size of CID is 65,535'); + var glyphId = -1; + if (cidToGidMapLength === 0) { + glyphId = charCode; + } else if (cidToGidMap[cid] !== undefined) { + glyphId = cidToGidMap[cid]; } - // filling the gaps using CID above the CIDs currently used in font - var nextCid = cidToGidMap.length; - for (var i = 1; i < numGlyphs; i++) { - if (!gidToCidMap[i]) - gidToCidMap[i] = nextCid++; - } - } else { - for (var i = 1; i < numGlyphs; i++) { - gidToCidMap[i] = i; - } - if (dupFirstEntry) { - gidToCidMap[numGlyphs - 1] = 0; - } - } - - glyphs = []; - ids = []; - - var usedUnicodes = []; - var unassignedUnicodeItems = []; - var toFontChar = this.cidToFontChar || this.toFontChar; - for (var i = 1; i < numGlyphs; i++) { - var cid = gidToCidMap[i]; - var unicode = toFontChar[cid]; - if (!unicode || typeof unicode !== 'number' || - isSpecialUnicode(unicode) || unicode in usedUnicodes) { - unassignedUnicodeItems.push(i); - continue; - } - usedUnicodes[unicode] = true; - glyphs.push({ unicode: unicode, code: cid }); - ids.push(i); - } - - // unassigned codepoints will never be used for non-Identity CMap - // because the input will be Unicode - if (!this.cidToFontChar) { - // trying to fit as many unassigned symbols as we can - // in the range allocated for the user defined symbols - var unusedUnicode = CMAP_GLYPH_OFFSET; - for (var j = 0, jj = unassignedUnicodeItems.length; j < jj; j++) { - var i = unassignedUnicodeItems[j]; - var cid = gidToCidMap[i]; - while (unusedUnicode in usedUnicodes) - unusedUnicode++; - if (unusedUnicode >= CMAP_GLYPH_OFFSET + GLYPH_AREA_SIZE) - break; - var unicode = unusedUnicode++; - this.toFontChar[cid] = unicode; - usedUnicodes[unicode] = true; - glyphs.push({ unicode: unicode, code: cid }); - ids.push(i); + if (glyphId >= 0 && glyphId < numGlyphs) { + charCodeToGlyphId[charCode] = glyphId; } + }); + if (dupFirstEntry) { + charCodeToGlyphId[0] = numGlyphs - 1; } } else { - this.useToFontChar = true; // Most of the following logic in this code branch is based on the // 9.6.6.4 of the PDF spec. - - // TODO(mack): - // We are using this.hasEncoding to mean that the encoding is either - // MacRomanEncoding or WinAnsiEncoding (following spec in 9.6.6.4), - // but this.hasEncoding is currently true for any encodings on the - // Encodings object (e.g. MacExpertEncoding). So should consider using - // better check for this. - var cmapTable = readCmapTable(tables.cmap, font, this.hasEncoding, - this.isSymbolicFont); - - // TODO(mack): If the (3, 0) cmap table used, then the font is - // symbolic. The range of charcodes in the cmap table should be - // one of the following: - // -> 0x0000 - 0x00FF - // -> 0xF000 - 0xF0FF - // -> 0xF100 - 0xF1FF - // -> 0xF200 - 0xF2FF - // If it is not, we should change not consider this a symbolic font - this.isSymbolicFont = cmapTable.isSymbolicFont; - + var cmapTable = readCmapTable(tables.cmap, font, this.isSymbolicFont); var cmapPlatformId = cmapTable.platformId; var cmapEncodingId = cmapTable.encodingId; var cmapMappings = cmapTable.mappings; var cmapMappingsLength = cmapMappings.length; - var glyphs = []; - var ids = []; - for (var i = 0; i < cmapMappingsLength; ++i) { - var cmapMapping = cmapMappings[i]; - var charcode = cmapMapping.charcode; - var unicode = cmapCharcodeToUnicode(charcode, this.isSymbolicFont, - cmapPlatformId, cmapEncodingId); + var hasEncoding = properties.differences.length || + !!properties.baseEncodingName; - if (!unicode) { - // TODO(mack): gotta check if skipping mappings where we cannot find - // a unicode is the correct behaviour - continue; + // The spec seems to imply that if the font is symbolic the encoding + // should be ignored, this doesn't appear to work for 'preistabelle.pdf' + // where the the font is symbolic and it has an encoding. + if (hasEncoding && + (cmapPlatformId === 3 && cmapEncodingId === 1 || + cmapPlatformId === 1 && cmapEncodingId === 0) || + (cmapPlatformId === -1 && cmapEncodingId === -1 && // Temporary hack + !!Encodings[properties.baseEncodingName])) { // Temporary hack + // When no preferred cmap table was found and |baseEncodingName| is + // one of the predefined encodings, we seem to obtain a better + // |charCodeToGlyphId| map from the code below (fixes bug 1057544). + // TODO: Note that this is a hack which should be removed as soon as + // we have proper support for more exotic cmap tables. + + var baseEncoding = []; + if (properties.baseEncodingName === 'MacRomanEncoding' || + properties.baseEncodingName === 'WinAnsiEncoding') { + baseEncoding = Encodings[properties.baseEncodingName]; } - glyphs.push({ - code: charcode, - unicode: unicode - }); - ids.push(cmapMapping.glyphId); - } - - var hasShortCmap = cmapTable.hasShortCmap; - var toFontChar = this.toFontChar; - - if (hasShortCmap && ids.length == numGlyphs) { - // Fixes the short cmap tables -- some generators use incorrect - // glyph id. - for (var i = 0, ii = ids.length; i < ii; i++) { - ids[i] = i; - } - } - - // Rewrite the whole toFontChar dictionary with a new one using the - // information from the mappings in the cmap table. - var newToFontChar = []; - if (this.isSymbolicFont) { - for (var i = 0, ii = glyphs.length; i < ii; i++) { - var glyph = glyphs[i]; - // For (3, 0) cmap tables: - // The charcode key being stored in toFontChar is the lower byte - // of the two-byte charcodes of the cmap table since according to - // the spec: 'each byte from the string shall be prepended with the - // high byte of the range [of charcodes in the cmap table], to form - // a two-byte character, which shall be used to select the - // associated glyph description from the subtable'. - // - // For (1, 0) cmap tables: - // 'single bytes from the string shall be used to look up the - // associated glyph descriptions from the subtable'. This means - // charcodes in the cmap will be single bytes, so no-op since - // glyph.code & 0xFF === glyph.code - newToFontChar[glyph.code & 0xFF] = glyph.unicode; - } - } else { - - var encoding = properties.baseEncoding; - var differences = properties.differences; - - // TODO(mack): check if it is necessary to shift control characters - // for non-symbolic fonts so that browsers dont't render them using - // space characters - - var glyphCodeMapping = cmapTable.glyphCodeMapping; - for (var charcode = 0; charcode < encoding.length; ++charcode) { - if (!encoding.hasOwnProperty(charcode)) { + for (charCode = 0; charCode < 256; charCode++) { + var glyphName; + if (this.differences && charCode in this.differences) { + glyphName = this.differences[charCode]; + } else if (charCode in baseEncoding && + baseEncoding[charCode] !== '') { + glyphName = baseEncoding[charCode]; + } else { + glyphName = Encodings.StandardEncoding[charCode]; + } + if (!glyphName) { continue; } - - // Since the cmap table that we will be writing out is a (3, 1) - // unicode table, in this section we will rewrites the charcodes - // in the pdf into unicodes - - var glyphName = encoding[charcode]; - // A nonsymbolic font should not have a Differences array, but - // if it does have one, we should still use it - if (charcode in differences) { - glyphName = differences[charcode]; + var unicodeOrCharCode; + if (cmapPlatformId === 3 && cmapEncodingId === 1) { + unicodeOrCharCode = GlyphsUnicode[glyphName]; + } else if (cmapPlatformId === 1 && cmapEncodingId === 0) { + // TODO: the encoding needs to be updated with mac os table. + unicodeOrCharCode = Encodings.MacRomanEncoding.indexOf(glyphName); } - // Finally, any undefined entries in the table shall be filled - // using StandardEncoding - if (!glyphName) { - glyphName = Encodings.StandardEncoding[charcode]; + var found = false; + for (i = 0; i < cmapMappingsLength; ++i) { + if (cmapMappings[i].charCode === unicodeOrCharCode) { + charCodeToGlyphId[charCode] = cmapMappings[i].glyphId; + found = true; + break; + } } - - // TODO(mack): Handle the case that the glyph name cannot be - // mapped as specified, in which case the glyph name shall be - // looked up in the font program's 'post' table (if one is - // present) and the associated glyph id shall be used. - // - // For now, we're just using the '.notdef' glyph name in this - // case. - glyphName = glyphName || '.notdef'; - - var unicode = GlyphsUnicode[glyphName]; - newToFontChar[charcode] = unicode; + if (!found && properties.glyphNames) { + // Try to map using the post table. There are currently no known + // pdfs that this fixes. + var glyphId = properties.glyphNames.indexOf(glyphName); + if (glyphId > 0) { + charCodeToGlyphId[charCode] = glyphId; + } + } + } + } else { + // For (3, 0) cmap tables: + // The charcode key being stored in charCodeToGlyphId is the lower + // byte of the two-byte charcodes of the cmap table since according to + // the spec: 'each byte from the string shall be prepended with the + // high byte of the range [of charcodes in the cmap table], to form + // a two-byte character, which shall be used to select the + // associated glyph description from the subtable'. + // + // For (1, 0) cmap tables: + // 'single bytes from the string shall be used to look up the + // associated glyph descriptions from the subtable'. This means + // charcodes in the cmap will be single bytes, so no-op since + // glyph.charCode & 0xFF === glyph.charCode + for (i = 0; i < cmapMappingsLength; ++i) { + charCode = cmapMappings[i].charCode & 0xFF; + charCodeToGlyphId[charCode] = cmapMappings[i].glyphId; } } - this.toFontChar = toFontChar = newToFontChar; - - createGlyphNameMap(glyphs, ids, properties); - this.glyphNameMap = properties.glyphNameMap; } - if (glyphs.length === 0) { + if (charCodeToGlyphId.length === 0) { // defines at least one glyph - glyphs.push({ unicode: 0xF000, code: 0xF000, glyph: '.notdef' }); - ids.push(0); + charCodeToGlyphId[0] = 0; } // Converting glyphs and ids into font's cmap table - tables.cmap.data = createCmapTable(glyphs, ids); - var unicodeIsEnabled = []; - for (var i = 0, ii = glyphs.length; i < ii; i++) { - unicodeIsEnabled[glyphs[i].unicode] = true; - } - this.unicodeIsEnabled = unicodeIsEnabled; + var newMapping = adjustMapping(charCodeToGlyphId, properties); + this.toFontChar = newMapping.toFontChar; + tables.cmap = { + tag: 'cmap', + data: createCmapTable(newMapping.charCodeToGlyphId) + }; if (!tables['OS/2'] || !validateOS2Table(tables['OS/2'])) { // extract some more font properties from the OpenType head and // hhea tables; yMin and descent value are always negative var override = { - unitsPerEm: int16([tables.head.data[18], tables.head.data[19]]), - yMax: int16([tables.head.data[42], tables.head.data[43]]), - yMin: int16([tables.head.data[38], tables.head.data[39]]) - 0x10000, - ascent: int16([tables.hhea.data[4], tables.hhea.data[5]]), - descent: int16([tables.hhea.data[6], tables.hhea.data[7]]) - 0x10000 + unitsPerEm: int16(tables.head.data[18], tables.head.data[19]), + yMax: int16(tables.head.data[42], tables.head.data[43]), + yMin: int16(tables.head.data[38], tables.head.data[39]) - 0x10000, + ascent: int16(tables.hhea.data[4], tables.hhea.data[5]), + descent: int16(tables.hhea.data[6], tables.hhea.data[7]) - 0x10000 }; tables['OS/2'] = { tag: 'OS/2', - data: stringToArray(createOS2Table(properties, glyphs, override)) + data: createOS2Table(properties, newMapping.charCodeToGlyphId, + override) }; } @@ -20391,16 +18265,16 @@ var Font = (function FontClosure() { if (!tables.post) { tables.post = { tag: 'post', - data: stringToArray(createPostTable(properties)) + data: createPostTable(properties) }; } if (!isTrueType) { try { // Trying to repair CFF file - var cffFile = new Stream(tables['CFF '].data); + cffFile = new Stream(tables['CFF '].data); var parser = new CFFParser(cffFile, properties); - var cff = parser.parse(); + cff = parser.parse(); var compiler = new CFFCompiler(cff); tables['CFF '].data = compiler.compile(); } catch (e) { @@ -20412,330 +18286,304 @@ var Font = (function FontClosure() { if (!tables.name) { tables.name = { tag: 'name', - data: stringToArray(createNameTable(this.name)) + data: createNameTable(this.name) }; } else { // ... using existing 'name' table as prototype var namePrototype = readNameTable(tables.name); - tables.name.data = stringToArray(createNameTable(name, namePrototype)); + tables.name.data = createNameTable(name, namePrototype); } - // rewrite the tables but tweak offsets - for (var i = 0; i < numTables; i++) { - var table = tables[tablesNames[i]]; - var data = []; - - var tableData = table.data; - for (var j = 0, jj = tableData.length; j < jj; j++) - data.push(tableData[j]); - createTableEntry(ttf, table.tag, data); + var builder = new OpenTypeFileBuilder(header.version); + for (var tableTag in tables) { + builder.addTable(tableTag, tables[tableTag].data); } - - // Add the table datas - for (var i = 0; i < numTables; i++) { - var table = tables[tablesNames[i]]; - var tableData = table.data; - ttf.file += arrayToString(tableData); - - // 4-byte aligned data - while (ttf.file.length & 3) - ttf.file += String.fromCharCode(0); - } - - return stringToArray(ttf.file); + return builder.toArray(); }, convert: function Font_convert(fontName, font, properties) { - function isFixedPitch(glyphs) { - for (var i = 0, ii = glyphs.length - 1; i < ii; i++) { - if (glyphs[i] != glyphs[i + 1]) - return false; + // TODO: Check the charstring widths to determine this. + properties.fixedPitch = false; + + var mapping = font.getGlyphMapping(properties); + var newMapping = adjustMapping(mapping, properties); + this.toFontChar = newMapping.toFontChar; + var numGlyphs = font.numGlyphs; + + function getCharCodes(charCodeToGlyphId, glyphId) { + var charCodes = null; + for (var charCode in charCodeToGlyphId) { + if (glyphId === charCodeToGlyphId[charCode]) { + if (!charCodes) { + charCodes = []; + } + charCodes.push(charCode | 0); + } } - return true; + return charCodes; } - // The offsets object holds at the same time a representation of where - // to write the table entry information about a table and another offset - // representing the offset where to draw the actual data of a particular - // table - var REQ_TABLES_CNT = 9; - - var otf = { - file: '', - virtualOffset: 9 * (4 * 4) - }; - - createOpenTypeHeader('\x4F\x54\x54\x4F', otf, 9); - - var charstrings = font.charstrings; - properties.fixedPitch = isFixedPitch(charstrings); - - var glyphNameMap = {}; - for (var i = 0; i < charstrings.length; ++i) { - var charstring = charstrings[i]; - glyphNameMap[charstring.glyph] = charstring.unicode; + function createCharCode(charCodeToGlyphId, glyphId) { + for (var charCode in charCodeToGlyphId) { + if (glyphId === charCodeToGlyphId[charCode]) { + return charCode | 0; + } + } + newMapping.charCodeToGlyphId[newMapping.nextAvailableFontCharCode] = + glyphId; + return newMapping.nextAvailableFontCharCode++; } - this.glyphNameMap = glyphNameMap; var seacs = font.seacs; - if (SEAC_ANALYSIS_ENABLED && seacs) { - var seacMap = []; + if (SEAC_ANALYSIS_ENABLED && seacs && seacs.length) { var matrix = properties.fontMatrix || FONT_IDENTITY_MATRIX; - for (var i = 0; i < charstrings.length; ++i) { - var charstring = charstrings[i]; - var seac = seacs[charstring.gid]; - if (!seac) { - continue; - } + var charset = font.getCharset(); + var seacMap = Object.create(null); + for (var glyphId in seacs) { + glyphId |= 0; + var seac = seacs[glyphId]; var baseGlyphName = Encodings.StandardEncoding[seac[2]]; - var baseUnicode = glyphNameMap[baseGlyphName]; var accentGlyphName = Encodings.StandardEncoding[seac[3]]; - var accentUnicode = glyphNameMap[accentGlyphName]; - if (!baseUnicode || !accentUnicode) { + var baseGlyphId = charset.indexOf(baseGlyphName); + var accentGlyphId = charset.indexOf(accentGlyphName); + if (baseGlyphId < 0 || accentGlyphId < 0) { continue; } var accentOffset = { x: seac[0] * matrix[0] + seac[1] * matrix[2] + matrix[4], y: seac[0] * matrix[1] + seac[1] * matrix[3] + matrix[5] }; - seacMap[charstring.unicode] = { - baseUnicode: baseUnicode, - accentUnicode: accentUnicode, - accentOffset: accentOffset - }; + + var charCodes = getCharCodes(mapping, glyphId); + if (!charCodes) { + // There's no point in mapping it if the char code was never mapped + // to begin with. + continue; + } + for (var i = 0, ii = charCodes.length; i < ii; i++) { + var charCode = charCodes[i]; + // Find a fontCharCode that maps to the base and accent glyphs. + // If one doesn't exists, create it. + var charCodeToGlyphId = newMapping.charCodeToGlyphId; + var baseFontCharCode = createCharCode(charCodeToGlyphId, + baseGlyphId); + var accentFontCharCode = createCharCode(charCodeToGlyphId, + accentGlyphId); + seacMap[charCode] = { + baseFontCharCode: baseFontCharCode, + accentFontCharCode: accentFontCharCode, + accentOffset: accentOffset + }; + } } properties.seacMap = seacMap; } - if (properties.overridableEncoding && (properties.subtype == 'Type1C' || - properties.subtype == 'CIDFontType0C')) { - var encoding = []; - for (var i = 0; i < charstrings.length; ++i) { - var charstring = charstrings[i]; - encoding[charstring.code] = charstring.glyph; - } - properties.baseEncoding = encoding; - } - if (properties.subtype == 'CIDFontType0C') { - var toFontChar = []; - for (var i = 0; i < charstrings.length; ++i) { - var charstring = charstrings[i]; - toFontChar[charstring.code] = charstring.unicode; - } - this.toFontChar = toFontChar; - } var unitsPerEm = 1 / (properties.fontMatrix || FONT_IDENTITY_MATRIX)[0]; - var fields = { - // PostScript Font Program - 'CFF ': font.data, + var builder = new OpenTypeFileBuilder('\x4F\x54\x54\x4F'); + // PostScript Font Program + builder.addTable('CFF ', font.data); + // OS/2 and Windows Specific metrics + builder.addTable('OS/2', createOS2Table(properties, + newMapping.charCodeToGlyphId)); + // Character to glyphs mapping + builder.addTable('cmap', createCmapTable(newMapping.charCodeToGlyphId)); + // Font header + builder.addTable('head', + '\x00\x01\x00\x00' + // Version number + '\x00\x00\x10\x00' + // fontRevision + '\x00\x00\x00\x00' + // checksumAdjustement + '\x5F\x0F\x3C\xF5' + // magicNumber + '\x00\x00' + // Flags + safeString16(unitsPerEm) + // unitsPerEM + '\x00\x00\x00\x00\x9e\x0b\x7e\x27' + // creation date + '\x00\x00\x00\x00\x9e\x0b\x7e\x27' + // modifification date + '\x00\x00' + // xMin + safeString16(properties.descent) + // yMin + '\x0F\xFF' + // xMax + safeString16(properties.ascent) + // yMax + string16(properties.italicAngle ? 2 : 0) + // macStyle + '\x00\x11' + // lowestRecPPEM + '\x00\x00' + // fontDirectionHint + '\x00\x00' + // indexToLocFormat + '\x00\x00'); // glyphDataFormat - // OS/2 and Windows Specific metrics - 'OS/2': stringToArray(createOS2Table(properties, charstrings)), + // Horizontal header + builder.addTable('hhea', + '\x00\x01\x00\x00' + // Version number + safeString16(properties.ascent) + // Typographic Ascent + safeString16(properties.descent) + // Typographic Descent + '\x00\x00' + // Line Gap + '\xFF\xFF' + // advanceWidthMax + '\x00\x00' + // minLeftSidebearing + '\x00\x00' + // minRightSidebearing + '\x00\x00' + // xMaxExtent + safeString16(properties.capHeight) + // caretSlopeRise + safeString16(Math.tan(properties.italicAngle) * + properties.xHeight) + // caretSlopeRun + '\x00\x00' + // caretOffset + '\x00\x00' + // -reserved- + '\x00\x00' + // -reserved- + '\x00\x00' + // -reserved- + '\x00\x00' + // -reserved- + '\x00\x00' + // metricDataFormat + string16(numGlyphs)); // Number of HMetrics - // Character to glyphs mapping - 'cmap': createCmapTable(charstrings.slice(), - ('glyphIds' in font) ? font.glyphIds : null), - - // Font header - 'head': (function fontFieldsHead() { - return stringToArray( - '\x00\x01\x00\x00' + // Version number - '\x00\x00\x10\x00' + // fontRevision - '\x00\x00\x00\x00' + // checksumAdjustement - '\x5F\x0F\x3C\xF5' + // magicNumber - '\x00\x00' + // Flags - safeString16(unitsPerEm) + // unitsPerEM - '\x00\x00\x00\x00\x9e\x0b\x7e\x27' + // creation date - '\x00\x00\x00\x00\x9e\x0b\x7e\x27' + // modifification date - '\x00\x00' + // xMin - safeString16(properties.descent) + // yMin - '\x0F\xFF' + // xMax - safeString16(properties.ascent) + // yMax - string16(properties.italicAngle ? 2 : 0) + // macStyle - '\x00\x11' + // lowestRecPPEM - '\x00\x00' + // fontDirectionHint - '\x00\x00' + // indexToLocFormat - '\x00\x00'); // glyphDataFormat - })(), - - // Horizontal header - 'hhea': (function fontFieldsHhea() { - return stringToArray( - '\x00\x01\x00\x00' + // Version number - safeString16(properties.ascent) + // Typographic Ascent - safeString16(properties.descent) + // Typographic Descent - '\x00\x00' + // Line Gap - '\xFF\xFF' + // advanceWidthMax - '\x00\x00' + // minLeftSidebearing - '\x00\x00' + // minRightSidebearing - '\x00\x00' + // xMaxExtent - safeString16(properties.capHeight) + // caretSlopeRise - safeString16(Math.tan(properties.italicAngle) * - properties.xHeight) + // caretSlopeRun - '\x00\x00' + // caretOffset - '\x00\x00' + // -reserved- - '\x00\x00' + // -reserved- - '\x00\x00' + // -reserved- - '\x00\x00' + // -reserved- - '\x00\x00' + // metricDataFormat - string16(charstrings.length + 1)); // Number of HMetrics - })(), - - // Horizontal metrics - 'hmtx': (function fontFieldsHmtx() { + // Horizontal metrics + builder.addTable('hmtx', (function fontFieldsHmtx() { + var charstrings = font.charstrings; + var cffWidths = font.cff ? font.cff.widths : null; var hmtx = '\x00\x00\x00\x00'; // Fake .notdef - for (var i = 0, ii = charstrings.length; i < ii; i++) { - var charstring = charstrings[i]; - var width = 'width' in charstring ? charstring.width : 0; + for (var i = 1, ii = numGlyphs; i < ii; i++) { + var width = 0; + if (charstrings) { + var charstring = charstrings[i - 1]; + width = 'width' in charstring ? charstring.width : 0; + } else if (cffWidths) { + width = Math.ceil(cffWidths[i] || 0); + } hmtx += string16(width) + string16(0); } - return stringToArray(hmtx); - })(), + return hmtx; + })()); - // Maximum profile - 'maxp': (function fontFieldsMaxp() { - return stringToArray( - '\x00\x00\x50\x00' + // Version number - string16(charstrings.length + 1)); // Num of glyphs - })(), + // Maximum profile + builder.addTable('maxp', + '\x00\x00\x50\x00' + // Version number + string16(numGlyphs)); // Num of glyphs - // Naming tables - 'name': stringToArray(createNameTable(fontName)), + // Naming tables + builder.addTable('name', createNameTable(fontName)); - // PostScript informations - 'post': stringToArray(createPostTable(properties)) - }; + // PostScript informations + builder.addTable('post', createPostTable(properties)); - for (var field in fields) - createTableEntry(otf, field, fields[field]); - - for (var field in fields) { - var table = fields[field]; - otf.file += arrayToString(table); - } - - return stringToArray(otf.file); + return builder.toArray(); }, - buildToFontChar: function Font_buildToFontChar(toUnicode) { - var result = []; - var unusedUnicode = CMAP_GLYPH_OFFSET; - for (var i = 0, ii = toUnicode.length; i < ii; i++) { - var unicode = toUnicode[i]; - var fontCharCode = typeof unicode === 'object' ? unusedUnicode++ : - unicode; - if (typeof unicode !== 'undefined') { - if (isString(fontCharCode) && fontCharCode.length === 1) { - fontCharCode = fontCharCode.charCodeAt(0); - } - result[i] = fontCharCode; - } + /** + * Builds a char code to unicode map based on section 9.10 of the spec. + * @param {Object} properties Font properties object. + * @return {Object} A ToUnicodeMap object. + */ + buildToUnicode: function Font_buildToUnicode(properties) { + // Section 9.10.2 Mapping Character Codes to Unicode Values + if (properties.toUnicode && properties.toUnicode.length !== 0) { + return properties.toUnicode; } - return result; - }, - - rebuildToUnicode: function Font_rebuildToUnicode(properties) { - var firstChar = properties.firstChar, lastChar = properties.lastChar; - var map = []; - var toUnicode = this.toUnicode || this.cidToUnicode; - if (toUnicode) { - var isIdentityMap = toUnicode.length === 0; - for (var i = firstChar, ii = lastChar; i <= ii; i++) { - // TODO missing map the character according font's CMap - map[i] = isIdentityMap ? String.fromCharCode(i) : toUnicode[i]; + // According to the spec if the font is a simple font we should only map + // to unicode if the base encoding is MacRoman, MacExpert, or WinAnsi or + // the differences array only contains adobe standard or symbol set names, + // in pratice it seems better to always try to create a toUnicode + // map based of the default encoding. + var toUnicode, charcode; + if (!properties.composite /* is simple font */) { + toUnicode = []; + var encoding = properties.defaultEncoding.slice(); + var baseEncodingName = properties.baseEncodingName; + // Merge in the differences array. + var differences = properties.differences; + for (charcode in differences) { + encoding[charcode] = differences[charcode]; } - } else { - for (var i = firstChar, ii = lastChar; i <= ii; i++) { - var glyph = properties.differences[i]; - if (!glyph) - glyph = properties.baseEncoding[i]; - if (!!glyph && (glyph in GlyphsUnicode)) - map[i] = String.fromCharCode(GlyphsUnicode[glyph]); - } - } - this.toUnicode = map; - }, - - loadCidToUnicode: function Font_loadCidToUnicode(properties) { - if (!properties.cidSystemInfo) - return; - - var cidToUnicodeMap = [], unicodeToCIDMap = []; - this.cidToUnicode = cidToUnicodeMap; - this.unicodeToCID = unicodeToCIDMap; - - var cidEncoding = properties.cidEncoding; - if (properties.toUnicode) { - if (cidEncoding && cidEncoding.indexOf('Identity-') !== 0) { - warn('Need to create a reverse mapping from \'ToUnicode\' CMap'); - } - return; // 'ToUnicode' CMap will be used - } - - var cidSystemInfo = properties.cidSystemInfo; - var cidToUnicode; - if (cidSystemInfo) { - cidToUnicode = CIDToUnicodeMaps[ - cidSystemInfo.registry + '-' + cidSystemInfo.ordering]; - } - - if (!cidToUnicode) - return; // identity encoding - - var overwrite = HalfwidthCMaps[cidEncoding]; - var cid = 1, i, j, k, ii; - for (i = 0, ii = cidToUnicode.length; i < ii; ++i) { - var unicode = cidToUnicode[i]; - if (isArray(unicode)) { - var length = unicode.length; - for (j = 0; j < length; j++) { - cidToUnicodeMap[cid] = k = unicode[j]; - if (!unicodeToCIDMap[k] || overwrite) { - unicodeToCIDMap[k] = cid; + for (charcode in encoding) { + // a) Map the character code to a character name. + var glyphName = encoding[charcode]; + // b) Look up the character name in the Adobe Glyph List (see the + // Bibliography) to obtain the corresponding Unicode value. + if (glyphName === '') { + continue; + } else if (GlyphsUnicode[glyphName] === undefined) { + // (undocumented) c) Few heuristics to recognize unknown glyphs + // NOTE: Adobe Reader does not do this step, but OSX Preview does + var code = 0; + switch (glyphName[0]) { + case 'G': // Gxx glyph + if (glyphName.length === 3) { + code = parseInt(glyphName.substr(1), 16); + } + break; + case 'g': // g00xx glyph + if (glyphName.length === 5) { + code = parseInt(glyphName.substr(1), 16); + } + break; + case 'C': // Cddd glyph + case 'c': // cddd glyph + if (glyphName.length >= 3) { + code = +glyphName.substr(1); + } + break; } - } - cid++; - } else if (typeof unicode === 'object') { - var fillLength = unicode.f; - if (fillLength) { - k = unicode.c; - for (j = 0; j < fillLength; ++j) { - cidToUnicodeMap[cid] = k; - if (!unicodeToCIDMap[k] || overwrite) { - unicodeToCIDMap[k] = cid; + if (code) { + // If |baseEncodingName| is one the predefined encodings, + // and |code| equals |charcode|, using the glyph defined in the + // baseEncoding seems to yield a better |toUnicode| mapping + // (fixes issue 5070). + if (baseEncodingName && code === +charcode) { + var baseEncoding = Encodings[baseEncodingName]; + if (baseEncoding && (glyphName = baseEncoding[charcode])) { + toUnicode[charcode] = + String.fromCharCode(GlyphsUnicode[glyphName]); + continue; + } } - cid++; - k++; + toUnicode[charcode] = String.fromCharCode(code); } - } else - cid += unicode.s; - } else if (unicode) { - cidToUnicodeMap[cid] = unicode; - if (!unicodeToCIDMap[unicode] || overwrite) { - unicodeToCIDMap[unicode] = cid; + continue; } - cid++; - } else - cid++; + toUnicode[charcode] = String.fromCharCode(GlyphsUnicode[glyphName]); + } + return new ToUnicodeMap(toUnicode); + } + // If the font is a composite font that uses one of the predefined CMaps + // listed in Table 118 (except Identity–H and Identity–V) or whose + // descendant CIDFont uses the Adobe-GB1, Adobe-CNS1, Adobe-Japan1, or + // Adobe-Korea1 character collection: + if (properties.composite && ( + (properties.cMap.builtInCMap && + !(properties.cMap instanceof IdentityCMap)) || + (properties.cidSystemInfo.registry === 'Adobe' && + (properties.cidSystemInfo.ordering === 'GB1' || + properties.cidSystemInfo.ordering === 'CNS1' || + properties.cidSystemInfo.ordering === 'Japan1' || + properties.cidSystemInfo.ordering === 'Korea1')))) { + // Then: + // a) Map the character code to a character identifier (CID) according + // to the font’s CMap. + // b) Obtain the registry and ordering of the character collection used + // by the font’s CMap (for example, Adobe and Japan1) from its + // CIDSystemInfo dictionary. + var registry = properties.cidSystemInfo.registry; + var ordering = properties.cidSystemInfo.ordering; + // c) Construct a second CMap name by concatenating the registry and + // ordering obtained in step (b) in the format registry–ordering–UCS2 + // (for example, Adobe–Japan1–UCS2). + var ucs2CMapName = new Name(registry + '-' + ordering + '-UCS2'); + // d) Obtain the CMap with the name constructed in step (c) (available + // from the ASN Web site; see the Bibliography). + var ucs2CMap = CMapFactory.create(ucs2CMapName, + { url: PDFJS.cMapUrl, packed: PDFJS.cMapPacked }, null); + var cMap = properties.cMap; + toUnicode = []; + cMap.forEach(function(charcode, cid) { + assert(cid <= 0xffff, 'Max size of CID is 65,535'); + // e) Map the CID obtained in step (a) according to the CMap obtained + // in step (d), producing a Unicode value. + var ucs2 = ucs2CMap.lookup(cid); + if (ucs2) { + toUnicode[charcode] = + String.fromCharCode((ucs2.charCodeAt(0) << 8) + + ucs2.charCodeAt(1)); + } + }); + return new ToUnicodeMap(toUnicode); } - if (!cidEncoding) { - return; - } - if (cidEncoding.indexOf('Identity-') !== 0) { - // input is already Unicode for non-Identity CMap encodings. - this.cidToUnicode = []; - // For CIDFontType2, however, we need cid-to-Unicode conversion - // to rebuild cmap. - if (properties.type == 'CIDFontType2') { - this.cidToFontChar = cidToUnicodeMap; - } - } else { - // We don't have to do reverse conversions if the string is - // already CID. - this.unicodeToCID = []; - } + // The viewer's choice, just use an identity map. + return new IdentityToUnicodeMap(properties.firstChar, + properties.lastChar); }, get spaceWidth() { @@ -20756,18 +18604,24 @@ var Font = (function FontClosure() { var glyphUnicode = GlyphsUnicode[glyphName]; // finding the charcode via unicodeToCID map var charcode = 0; - if (this.composite) - charcode = this.unicodeToCID[glyphUnicode]; + if (this.composite) { + if (this.cMap.contains(glyphUnicode)) { + charcode = this.cMap.lookup(glyphUnicode); + } + } // ... via toUnicode map - if (!charcode && 'toUnicode' in this) - charcode = this.toUnicode.indexOf(glyphUnicode); + if (!charcode && 'toUnicode' in this) { + charcode = this.toUnicode.charCodeOf(glyphUnicode); + } // setting it to unicode if negative or undefined - if (charcode <= 0) + if (charcode <= 0) { charcode = glyphUnicode; + } // trying to get width via charcode width = this.widths[charcode]; - if (width) + if (width) { break; // the non-zero width found + } } width = width || this.defaultWidth; // Do not shadow the property here. See discussion: @@ -20777,153 +18631,87 @@ var Font = (function FontClosure() { }, charToGlyph: function Font_charToGlyph(charcode) { - var fontCharCode, width, operatorList, disabled; + var fontCharCode, width, operatorListId; - var width = this.widths[charcode]; - var vmetric = this.vmetrics && this.vmetrics[charcode]; - - switch (this.type) { - case 'CIDFontType0': - var cid = this.unicodeToCID[charcode] || charcode; - if (this.unicodeToCID.length > 0) { - width = this.widths[cid]; - vmetric = this.vmetrics && this.vmetrics[cid]; - } - if (this.noUnicodeAdaptation) { - fontCharCode = this.toFontChar[charcode] || charcode; - break; - } - // CIDFontType0 is not encoded in Unicode. - fontCharCode = this.toFontChar[cid] || cid; - break; - case 'CIDFontType2': - if (this.unicodeToCID.length > 0) { - var cid = this.unicodeToCID[charcode] || charcode; - width = this.widths[cid]; - vmetric = this.vmetrics && this.vmetrics[cid]; - fontCharCode = charcode; - break; - } - fontCharCode = this.toFontChar[charcode] || charcode; - break; - case 'MMType1': // XXX at the moment only "standard" fonts are supported - case 'Type1': - var glyphName = this.differences[charcode] || this.encoding[charcode]; - if (!isNum(width)) - width = this.widths[glyphName]; - if (this.noUnicodeAdaptation) { - fontCharCode = mapPrivateUseChars(GlyphsUnicode[glyphName] || - charcode); - break; - } - fontCharCode = this.glyphNameMap[glyphName] || - GlyphsUnicode[glyphName] || charcode; - break; - case 'Type3': - var glyphName = this.differences[charcode] || this.encoding[charcode]; - operatorList = this.charProcOperatorList[glyphName]; - fontCharCode = charcode; - break; - case 'TrueType': - if (this.useToFontChar) { - fontCharCode = this.toFontChar[charcode] || charcode; - break; - } - var glyphName = this.differences[charcode] || this.encoding[charcode]; - if (!glyphName) - glyphName = Encodings.StandardEncoding[charcode]; - if (!isNum(width)) - width = this.widths[glyphName]; - if (this.noUnicodeAdaptation) { - fontCharCode = GlyphsUnicode[glyphName] || charcode; - break; - } - if (!this.hasEncoding || this.isSymbolicFont) { - fontCharCode = this.useToFontChar ? this.toFontChar[charcode] : - charcode; - break; - } - - // MacRoman encoding address by re-encoding the cmap table - - fontCharCode = glyphName in this.glyphNameMap ? - this.glyphNameMap[glyphName] : GlyphsUnicode[glyphName]; - break; - default: - warn('Unsupported font type: ' + this.type); - break; + var widthCode = charcode; + if (this.cMap && this.cMap.contains(charcode)) { + widthCode = this.cMap.lookup(charcode); } - - var unicodeChars = !('toUnicode' in this) ? charcode : - this.toUnicode[charcode] || charcode; - if (typeof unicodeChars === 'number') { - unicodeChars = String.fromCharCode(unicodeChars); - } - + width = this.widths[widthCode]; width = isNum(width) ? width : this.defaultWidth; - disabled = this.unicodeIsEnabled ? - !this.unicodeIsEnabled[fontCharCode] : false; + var vmetric = this.vmetrics && this.vmetrics[widthCode]; + + var unicode = this.toUnicode.get(charcode) || charcode; + if (typeof unicode === 'number') { + unicode = String.fromCharCode(unicode); + } + + // First try the toFontChar map, if it's not there then try falling + // back to the char code. + fontCharCode = this.toFontChar[charcode] || charcode; + if (this.missingFile) { + fontCharCode = mapSpecialUnicodeValues(fontCharCode); + } + + if (this.isType3Font) { + // Font char code in this case is actually a glyph name. + operatorListId = fontCharCode; + } var accent = null; - if (this.seacMap && this.seacMap[fontCharCode]) { - var seac = this.seacMap[fontCharCode]; - fontCharCode = seac.baseUnicode; + if (this.seacMap && this.seacMap[charcode]) { + var seac = this.seacMap[charcode]; + fontCharCode = seac.baseFontCharCode; accent = { - fontChar: String.fromCharCode(seac.accentUnicode), + fontChar: String.fromCharCode(seac.accentFontCharCode), offset: seac.accentOffset }; } - return { - fontChar: String.fromCharCode(fontCharCode), - unicode: unicodeChars, - accent: accent, - width: width, - vmetric: vmetric, - disabled: disabled, - operatorList: operatorList - }; + var fontChar = String.fromCharCode(fontCharCode); + + var glyph = this.glyphCache[charcode]; + if (!glyph || + !glyph.matchesForCache(fontChar, unicode, accent, width, vmetric, + operatorListId)) { + glyph = new Glyph(fontChar, unicode, accent, width, vmetric, + operatorListId); + this.glyphCache[charcode] = glyph; + } + return glyph; }, charsToGlyphs: function Font_charsToGlyphs(chars) { var charsCache = this.charsCache; - var glyphs; + var glyphs, glyph, charcode; // if we translated this string before, just grab it from the cache if (charsCache) { glyphs = charsCache[chars]; - if (glyphs) + if (glyphs) { return glyphs; + } } // lazily create the translation cache - if (!charsCache) + if (!charsCache) { charsCache = this.charsCache = Object.create(null); + } glyphs = []; var charsCacheKey = chars; + var i = 0, ii; - var converter; - var cidEncoding = this.cidEncoding; - if (cidEncoding) { - converter = CMapConverterList[cidEncoding]; - if (converter) { - chars = converter(chars); - } else if (cidEncoding.indexOf('Uni') !== 0 && - cidEncoding.indexOf('Identity-') !== 0) { - warn('Unsupported CMap: ' + cidEncoding); - } - } - if (!converter && this.cmap) { - var i = 0; + if (this.cMap) { // composite fonts have multi-byte strings convert the string from // single-byte to multi-byte + var c = {}; while (i < chars.length) { - var c = this.cmap.readCharCode(chars, i); - var charcode = c[0]; - var length = c[1]; + this.cMap.readCharCode(chars, i, c); + charcode = c.charcode; + var length = c.length; i += length; - var glyph = this.charToGlyph(charcode); + glyph = this.charToGlyph(charcode); glyphs.push(glyph); // placing null after each word break charcode (ASCII SPACE) // Ignore occurences of 0x20 in multiple-byte codes. @@ -20931,14 +18719,14 @@ var Font = (function FontClosure() { glyphs.push(null); } } - } - else { - for (var i = 0, ii = chars.length; i < ii; ++i) { - var charcode = chars.charCodeAt(i); - var glyph = this.charToGlyph(charcode); + } else { + for (i = 0, ii = chars.length; i < ii; ++i) { + charcode = chars.charCodeAt(i); + glyph = this.charToGlyph(charcode); glyphs.push(glyph); - if (charcode == 0x20) + if (charcode === 0x20) { glyphs.push(null); + } } } @@ -20953,6 +18741,8 @@ var Font = (function FontClosure() { var ErrorFont = (function ErrorFontClosure() { function ErrorFont(error) { this.error = error; + this.loadedName = 'g_font_error'; + this.loading = false; } ErrorFont.prototype = { @@ -20967,6 +18757,61 @@ var ErrorFont = (function ErrorFontClosure() { return ErrorFont; })(); +/** + * Shared logic for building a char code to glyph id mapping for Type1 and + * simple CFF fonts. See section 9.6.6.2 of the spec. + * @param {Object} properties Font properties object. + * @param {Object} builtInEncoding The encoding contained within the actual font + * data. + * @param {Array} Array of glyph names where the index is the glyph ID. + * @returns {Object} A char code to glyph ID map. + */ +function type1FontGlyphMapping(properties, builtInEncoding, glyphNames) { + var charCodeToGlyphId = Object.create(null); + var glyphId, charCode, baseEncoding; + + if (properties.baseEncodingName) { + // If a valid base encoding name was used, the mapping is initialized with + // that. + baseEncoding = Encodings[properties.baseEncodingName]; + for (charCode = 0; charCode < baseEncoding.length; charCode++) { + glyphId = glyphNames.indexOf(baseEncoding[charCode]); + if (glyphId >= 0) { + charCodeToGlyphId[charCode] = glyphId; + } + } + } else if (!!(properties.flags & FontFlags.Symbolic)) { + // For a symbolic font the encoding should be the fonts built-in + // encoding. + for (charCode in builtInEncoding) { + charCodeToGlyphId[charCode] = builtInEncoding[charCode]; + } + } else { + // For non-symbolic fonts that don't have a base encoding the standard + // encoding should be used. + baseEncoding = Encodings.StandardEncoding; + for (charCode = 0; charCode < baseEncoding.length; charCode++) { + glyphId = glyphNames.indexOf(baseEncoding[charCode]); + if (glyphId >= 0) { + charCodeToGlyphId[charCode] = glyphId; + } + } + } + + // Lastly, merge in the differences. + var differences = properties.differences; + if (differences) { + for (charCode in differences) { + var glyphName = differences[charCode]; + glyphId = glyphNames.indexOf(glyphName); + if (glyphId >= 0) { + charCodeToGlyphId[charCode] = glyphId; + } + } + } + return charCodeToGlyphId; +} + /* * CharStrings are encoded following the the CharString Encoding sequence * describe in Chapter 6 of the "Adobe Type1 Font Format" specification. @@ -21036,6 +18881,7 @@ var Type1CharString = (function Type1CharStringClosure() { convert: function Type1CharString_convert(encoded, subrs) { var count = encoded.length; var error = false; + var wx, sbx, subrNumber; for (var i = 0; i < count; i++) { var value = encoded[i]; if (value < 32) { @@ -21093,7 +18939,7 @@ var Type1CharString = (function Type1CharStringClosure() { error = true; break; } - var subrNumber = this.stack.pop(); + subrNumber = this.stack.pop(); error = this.convert(subrs[subrNumber], subrs); break; case 11: // return @@ -21105,12 +18951,12 @@ var Type1CharString = (function Type1CharStringClosure() { } // To convert to type2 we have to move the width value to the // first part of the charstring and then use hmoveto with lsb. - var wx = this.stack.pop(); - var sbx = this.stack.pop(); + wx = this.stack.pop(); + sbx = this.stack.pop(); this.lsb = sbx; this.width = wx; - this.stack.push(sbx); - error = this.executeCommand(1, COMMAND_MAP.hmoveto); + this.stack.push(wx, sbx); + error = this.executeCommand(2, COMMAND_MAP.hmoveto); break; case 14: // endchar this.output.push(COMMAND_MAP.endchar[0]); @@ -21179,13 +19025,13 @@ var Type1CharString = (function Type1CharStringClosure() { // (dx, dy). The height argument will not be used for vmtx and // vhea tables reconstruction -- ignoring it. var wy = this.stack.pop(); - var wx = this.stack.pop(); + wx = this.stack.pop(); var sby = this.stack.pop(); - var sbx = this.stack.pop(); + sbx = this.stack.pop(); this.lsb = sbx; this.width = wx; - this.stack.push(sbx, sby); - error = this.executeCommand(2, COMMAND_MAP.rmoveto); + this.stack.push(wx, sbx, sby); + error = this.executeCommand(3, COMMAND_MAP.rmoveto); break; case (12 << 8) + 12: // div if (this.stack.length < 2) { @@ -21201,7 +19047,7 @@ var Type1CharString = (function Type1CharStringClosure() { error = true; break; } - var subrNumber = this.stack.pop(); + subrNumber = this.stack.pop(); var numArgs = this.stack.pop(); if (subrNumber === 0 && numArgs === 3) { var flexArgs = this.stack.splice(this.stack.length - 17, 17); @@ -21282,7 +19128,7 @@ var Type1CharString = (function Type1CharStringClosure() { if (keepStack) { this.stack.splice(start, howManyArgs); } else { - this.stack = []; + this.stack.length = 0; } return false; } @@ -21308,18 +19154,46 @@ var Type1Parser = (function Type1ParserClosure() { var EEXEC_ENCRYPT_KEY = 55665; var CHAR_STRS_ENCRYPT_KEY = 4330; - function decrypt(stream, key, discardNumber) { - var r = key, c1 = 52845, c2 = 22719; - var decryptedString = []; + function isHexDigit(code) { + return code >= 48 && code <= 57 || // '0'-'9' + code >= 65 && code <= 70 || // 'A'-'F' + code >= 97 && code <= 102; // 'a'-'f' + } - var value = ''; - var count = stream.length; + function decrypt(data, key, discardNumber) { + var r = key | 0, c1 = 52845, c2 = 22719; + var count = data.length; + var decrypted = new Uint8Array(count); for (var i = 0; i < count; i++) { - value = stream[i]; - decryptedString[i] = value ^ (r >> 8); + var value = data[i]; + decrypted[i] = value ^ (r >> 8); r = ((value + r) * c1 + c2) & ((1 << 16) - 1); } - return decryptedString.slice(discardNumber); + return Array.prototype.slice.call(decrypted, discardNumber); + } + + function decryptAscii(data, key, discardNumber) { + var r = key | 0, c1 = 52845, c2 = 22719; + var count = data.length, maybeLength = count >>> 1; + var decrypted = new Uint8Array(maybeLength); + var i, j; + for (i = 0, j = 0; i < count; i++) { + var digit1 = data[i]; + if (!isHexDigit(digit1)) { + continue; + } + i++; + var digit2; + while (i < count && !isHexDigit(digit2 = data[i])) { + i++; + } + if (i < count) { + var value = parseInt(String.fromCharCode(digit1, digit2), 16); + decrypted[j++] = value ^ (r >> 8); + r = ((value + r) * c1 + c2) & ((1 << 16) - 1); + } + } + return Array.prototype.slice.call(decrypted, discardNumber, j); } function isSpecial(c) { @@ -21331,7 +19205,11 @@ var Type1Parser = (function Type1ParserClosure() { function Type1Parser(stream, encrypted) { if (encrypted) { - stream = new Stream(decrypt(stream.getBytes(), EEXEC_ENCRYPT_KEY, 4)); + var data = stream.getBytes(); + var isBinary = !(isHexDigit(data[0]) && isHexDigit(data[1]) && + isHexDigit(data[2]) && isHexDigit(data[3])); + stream = new Stream(isBinary ? decrypt(data, EEXEC_ENCRYPT_KEY, 4) : + decryptAscii(data, EEXEC_ENCRYPT_KEY, 4)); } this.stream = stream; this.nextChar(); @@ -21423,7 +19301,7 @@ var Type1Parser = (function Type1ParserClosure() { } } }; - var token; + var token, length, data, lenIV, encoded; while ((token = this.getToken()) !== null) { if (token !== '/') { continue; @@ -21447,12 +19325,11 @@ var Type1Parser = (function Type1ParserClosure() { continue; } var glyph = this.getToken(); - var length = this.readInt(); + length = this.readInt(); this.getToken(); // read in 'RD' or '-|' - var data = stream.makeSubStream(stream.pos, length); - var lenIV = program.properties.privateData['lenIV']; - var encoded = decrypt(data.getBytes(), CHAR_STRS_ENCRYPT_KEY, - lenIV); + data = stream.makeSubStream(stream.pos, length); + lenIV = program.properties.privateData['lenIV']; + encoded = decrypt(data.getBytes(), CHAR_STRS_ENCRYPT_KEY, lenIV); // Skip past the required space and binary data. stream.skip(length); this.nextChar(); @@ -21471,12 +19348,11 @@ var Type1Parser = (function Type1ParserClosure() { this.getToken(); // read in 'array' while ((token = this.getToken()) === 'dup') { var index = this.readInt(); - var length = this.readInt(); + length = this.readInt(); this.getToken(); // read in 'RD' or '-|' - var data = stream.makeSubStream(stream.pos, length); - var lenIV = program.properties.privateData['lenIV']; - var encoded = decrypt(data.getBytes(), CHAR_STRS_ENCRYPT_KEY, - lenIV); + data = stream.makeSubStream(stream.pos, length); + lenIV = program.properties.privateData['lenIV']; + encoded = decrypt(data.getBytes(), CHAR_STRS_ENCRYPT_KEY, lenIV); // Skip past the required space and binary data. stream.skip(length); this.nextChar(); @@ -21523,8 +19399,8 @@ var Type1Parser = (function Type1ParserClosure() { } for (var i = 0; i < charstrings.length; i++) { - var glyph = charstrings[i].glyph; - var encoded = charstrings[i].encoded; + glyph = charstrings[i].glyph; + encoded = charstrings[i].encoded; var charString = new Type1CharString(); var error = charString.convert(encoded, subrs); var output = charString.output; @@ -21535,11 +19411,11 @@ var Type1Parser = (function Type1ParserClosure() { output = [14]; } program.charstrings.push({ - glyph: glyph, - data: output, - seac: charString.seac, + glyphName: glyph, + charstring: output, + width: charString.width, lsb: charString.lsb, - width: charString.width + seac: charString.seac }); } @@ -21570,7 +19446,7 @@ var Type1Parser = (function Type1ParserClosure() { this.getToken(); // read in 'array' for (var j = 0; j < size; j++) { - var token = this.getToken(); + token = this.getToken(); // skipping till first dup or def (e.g. ignoring for statement) while (token !== 'dup' && token !== 'def') { token = this.getToken(); @@ -21588,10 +19464,7 @@ var Type1Parser = (function Type1ParserClosure() { this.getToken(); // read the in 'put' } } - if (properties.overridableEncoding && encoding) { - properties.baseEncoding = encoding; - break; - } + properties.builtInEncoding = encoding; break; case 'FontBBox': var fontBBox = this.readNumberArray(); @@ -21646,7 +19519,7 @@ var CFFStandardStrings = [ 'odieresis', 'ograve', 'otilde', 'scaron', 'uacute', 'ucircumflex', 'udieresis', 'ugrave', 'yacute', 'ydieresis', 'zcaron', 'exclamsmall', 'Hungarumlautsmall', 'dollaroldstyle', 'dollarsuperior', 'ampersandsmall', - 'Acutesmall', 'parenleftsuperior', 'parenrightsuperior', '266 ff', + 'Acutesmall', 'parenleftsuperior', 'parenrightsuperior', 'twodotenleader', 'onedotenleader', 'zerooldstyle', 'oneoldstyle', 'twooldstyle', 'threeoldstyle', 'fouroldstyle', 'fiveoldstyle', 'sixoldstyle', 'sevenoldstyle', 'eightoldstyle', 'nineoldstyle', 'commasuperior', @@ -21689,7 +19562,7 @@ var Type1Font = function Type1Font(name, file, properties) { var headerBlockLength = properties.length1; var eexecBlockLength = properties.length2; var pfbHeader = file.peekBytes(PFB_HEADER_SIZE); - var pfbHeaderPresent = pfbHeader[0] == 0x80 && pfbHeader[1] == 0x01; + var pfbHeaderPresent = pfbHeader[0] === 0x80 && pfbHeader[1] === 0x01; if (pfbHeaderPresent) { file.skip(PFB_HEADER_SIZE); headerBlockLength = (pfbHeader[5] << 24) | (pfbHeader[4] << 16) | @@ -21711,10 +19584,11 @@ var Type1Font = function Type1Font(name, file, properties) { var eexecBlock = new Stream(file.getBytes(eexecBlockLength)); var eexecBlockParser = new Type1Parser(eexecBlock, true); var data = eexecBlockParser.extractFontProgram(); - for (var info in data.properties) + for (var info in data.properties) { properties[info] = data.properties[info]; + } - var charstrings = this.getOrderedCharStrings(data.charstrings, properties); + var charstrings = data.charstrings; var type2Charstrings = this.getType2Charstrings(charstrings); var subrs = this.getType2Subrs(data.subrs); @@ -21725,35 +19599,37 @@ var Type1Font = function Type1Font(name, file, properties) { }; Type1Font.prototype = { - getOrderedCharStrings: function Type1Font_getOrderedCharStrings(glyphs, - properties) { - var charstrings = []; - var usedUnicodes = []; - var i, length, glyphName; - var unusedUnicode = CMAP_GLYPH_OFFSET; - for (i = 0, length = glyphs.length; i < length; i++) { - var item = glyphs[i]; - var glyphName = item.glyph; - var unicode = glyphName in GlyphsUnicode ? - GlyphsUnicode[glyphName] : unusedUnicode++; - while (usedUnicodes[unicode]) { - unicode = unusedUnicode++; + get numGlyphs() { + return this.charstrings.length + 1; + }, + + getCharset: function Type1Font_getCharset() { + var charset = ['.notdef']; + var charstrings = this.charstrings; + for (var glyphId = 0; glyphId < charstrings.length; glyphId++) { + charset.push(charstrings[glyphId].glyphName); + } + return charset; + }, + + getGlyphMapping: function Type1Font_getGlyphMapping(properties) { + var charstrings = this.charstrings; + var glyphNames = ['.notdef'], glyphId; + for (glyphId = 0; glyphId < charstrings.length; glyphId++) { + glyphNames.push(charstrings[glyphId].glyphName); + } + var encoding = properties.builtInEncoding; + if (encoding) { + var builtInEncoding = {}; + for (var charCode in encoding) { + glyphId = glyphNames.indexOf(encoding[charCode]); + if (glyphId >= 0) { + builtInEncoding[charCode] = glyphId; + } } - usedUnicodes[unicode] = true; - charstrings.push({ - glyph: glyphName, - unicode: unicode, - gid: i, - charstring: item.data, - width: item.width, - lsb: item.lsb - }); } - charstrings.sort(function charstrings_sort(a, b) { - return a.unicode - b.unicode; - }); - return charstrings; + return type1FontGlyphMapping(properties, builtInEncoding, glyphNames); }, getSeacs: function Type1Font_getSeacs(charstrings) { @@ -21762,7 +19638,8 @@ Type1Font.prototype = { for (i = 0, ii = charstrings.length; i < ii; i++) { var charstring = charstrings[i]; if (charstring.seac) { - seacMap[i] = charstring.seac; + // Offset by 1 for .notdef + seacMap[i + 1] = charstring.seac; } } return seacMap; @@ -21780,19 +19657,22 @@ Type1Font.prototype = { getType2Subrs: function Type1Font_getType2Subrs(type1Subrs) { var bias = 0; var count = type1Subrs.length; - if (count < 1133) + if (count < 1133) { bias = 107; - else if (count < 33769) + } else if (count < 33769) { bias = 1131; - else + } else { bias = 32768; + } // Add a bunch of empty subrs to deal with the Type2 bias var type2Subrs = []; - for (var i = 0; i < bias; i++) + var i; + for (i = 0; i < bias; i++) { type2Subrs.push([0x0B]); + } - for (var i = 0; i < count; i++) { + for (i = 0; i < count; i++) { type2Subrs.push(type1Subrs[i]); } @@ -21833,22 +19713,23 @@ Type1Font.prototype = { var count = glyphs.length; var charsetArray = [0]; - for (var i = 0; i < count; i++) { - var index = CFFStandardStrings.indexOf(charstrings[i].glyph); - // Some characters like asterikmath && circlecopyrt are - // missing from the original strings, for the moment let's - // map them to .notdef and see later if it cause any - // problems - if (index == -1) + var i, ii; + for (i = 0; i < count; i++) { + var index = CFFStandardStrings.indexOf(charstrings[i].glyphName); + // TODO: Insert the string and correctly map it. Previously it was + // thought mapping names that aren't in the standard strings to .notdef + // was fine, however in issue818 when mapping them all to .notdef the + // adieresis glyph no longer worked. + if (index === -1) { index = 0; - + } charsetArray.push((index >> 8) & 0xff, index & 0xff); } cff.charset = new CFFCharset(false, 0, [], charsetArray); var charStringsIndex = new CFFIndex(); charStringsIndex.add([0x8B, 0x0E]); // .notdef - for (var i = 0; i < count; i++) { + for (i = 0; i < count; i++) { charStringsIndex.add(glyphs[i]); } cff.charStrings = charStringsIndex; @@ -21871,10 +19752,11 @@ Type1Font.prototype = { 'StdHW', 'StdVW' ]; - for (var i = 0, ii = fields.length; i < ii; i++) { + for (i = 0, ii = fields.length; i < ii; i++) { var field = fields[i]; - if (!properties.privateData.hasOwnProperty(field)) + if (!properties.privateData.hasOwnProperty(field)) { continue; + } var value = properties.privateData[field]; if (isArray(value)) { // All of the private dictionary array data in CFF must be stored as @@ -21888,7 +19770,7 @@ Type1Font.prototype = { cff.topDict.privateDict = privateDict; var subrIndex = new CFFIndex(); - for (var i = 0, ii = subrs.length; i < ii; i++) { + for (i = 0, ii = subrs.length; i < ii; i++) { subrIndex.add(subrs[i]); } privateDict.subrsIndex = subrIndex; @@ -21905,7 +19787,7 @@ var CFFFont = (function CFFFontClosure() { var parser = new CFFParser(file, properties); this.cff = parser.parse(); var compiler = new CFFCompiler(this.cff); - this.readExtra(); + this.seacs = this.cff.seacs; try { this.data = compiler.compile(); } catch (e) { @@ -21917,111 +19799,42 @@ var CFFFont = (function CFFFontClosure() { } CFFFont.prototype = { - readExtra: function CFFFont_readExtra() { - // charstrings contains info about glyphs (one element per glyph - // containing mappings for {unicode, width}) - var charstrings = this.getCharStrings(); - - // create the mapping between charstring and glyph id - var glyphIds = []; - for (var i = 0, ii = charstrings.length; i < ii; i++) - glyphIds.push(charstrings[i].gid); - - this.charstrings = charstrings; - this.glyphIds = glyphIds; - this.seacs = this.cff.seacs; + get numGlyphs() { + return this.cff.charStrings.count; }, - getCharStrings: function CFFFont_getCharStrings() { + getCharset: function CFFFont_getCharset() { + return this.cff.charset.charset; + }, + getGlyphMapping: function CFFFont_getGlyphMapping() { var cff = this.cff; + var properties = this.properties; var charsets = cff.charset.charset; - var encoding = cff.encoding ? cff.encoding.encoding : null; - var charstrings = []; - var unicodeUsed = []; - var unassignedUnicodeItems = []; - var inverseEncoding = []; - var gidStart = 0; - if (charsets[0] === '.notdef') { - gidStart = 1; - } - // According to section 9.7.4.2 CIDFontType0C glyph selection should be - // handled differently. - if (this.properties.subtype === 'CIDFontType0C') { - if (this.cff.isCIDFont) { + var charCodeToGlyphId; + var glyphId; + + if (properties.composite) { + charCodeToGlyphId = Object.create(null); + if (cff.isCIDFont) { // If the font is actually a CID font then we should use the charset // to map CIDs to GIDs. - inverseEncoding = charsets; + for (glyphId = 0; glyphId < charsets.length; glyphId++) { + var cid = charsets[glyphId]; + var charCode = properties.cMap.charCodeOf(cid); + charCodeToGlyphId[charCode] = glyphId; + } } else { // If it is NOT actually a CID font then CIDs should be mapped // directly to GIDs. - inverseEncoding = []; - for (var i = 0, ii = cff.charStrings.count; i < ii; i++) { - inverseEncoding.push(i); - } - // Use the identity map for charsets as well. - charsets = inverseEncoding; - } - } else { - for (var charcode in encoding) { - var gid = encoding[charcode]; - if (gid in inverseEncoding) { - // Glyphs can be multiply-encoded if there was an encoding - // supplement. Convert to an array and append the charcode. - var previousCharcode = inverseEncoding[gid]; - if (!isArray(previousCharcode)) { - inverseEncoding[gid] = [previousCharcode]; - } - inverseEncoding[gid].push(charcode | 0); - } else { - inverseEncoding[gid] = charcode | 0; + for (glyphId = 0; glyphId < cff.charStrings.count; glyphId++) { + charCodeToGlyphId[glyphId] = glyphId; } } + return charCodeToGlyphId; } - for (var i = gidStart, ii = charsets.length; i < ii; i++) { - var glyph = charsets[i]; - - var codes = inverseEncoding[i]; - if (!isArray(codes)) { - codes = [codes]; - } - - for (var j = 0; j < codes.length; j++) { - var code = codes[j]; - - if (!code || isSpecialUnicode(code)) { - unassignedUnicodeItems.push(i, code); - continue; - } - charstrings.push({ - unicode: code, - code: code, - gid: i, - glyph: glyph - }); - unicodeUsed[code] = true; - } - } - - var nextUnusedUnicode = CMAP_GLYPH_OFFSET; - for (var j = 0, jj = unassignedUnicodeItems.length; j < jj; j += 2) { - var i = unassignedUnicodeItems[j]; - // giving unicode value anyway - while (nextUnusedUnicode in unicodeUsed) - nextUnusedUnicode++; - var unicode = nextUnusedUnicode++; - charstrings.push({ - unicode: unicode, - code: unassignedUnicodeItems[j + 1] || 0, - gid: i, - glyph: charsets[i] - }); - } - - // sort the array by the unicode value (again) - charstrings.sort(function getCharStringsSort(a, b) { - return a.unicode - b.unicode; - }); - return charstrings; + var encoding = cff.encoding ? cff.encoding.encoding : null; + charCodeToGlyphId = type1FontGlyphMapping(properties, encoding, charsets); + return charCodeToGlyphId; } }; @@ -22031,10 +19844,10 @@ var CFFFont = (function CFFFontClosure() { var CFFParser = (function CFFParserClosure() { var CharstringValidationData = [ null, - { id: 'hstem', min: 2, resetStack: true, stem: true }, + { id: 'hstem', min: 2, stackClearing: true, stem: true }, null, - { id: 'vstem', min: 2, resetStack: true, stem: true }, - { id: 'vmoveto', min: 1, resetStack: true }, + { id: 'vstem', min: 2, stackClearing: true, stem: true }, + { id: 'vmoveto', min: 1, stackClearing: true }, { id: 'rlineto', min: 2, resetStack: true }, { id: 'hlineto', min: 1, resetStack: true }, { id: 'vlineto', min: 1, resetStack: true }, @@ -22044,16 +19857,16 @@ var CFFParser = (function CFFParserClosure() { { id: 'return', min: 0, undefStack: true }, null, // 12 null, - null, // endchar + { id: 'endchar', min: 0, stackClearing: true }, null, null, null, - { id: 'hstemhm', min: 2, resetStack: true, stem: true }, - null, // hintmask - null, // cntrmask - { id: 'rmoveto', min: 2, resetStack: true }, - { id: 'hmoveto', min: 1, resetStack: true }, - { id: 'vstemhm', min: 2, resetStack: true, stem: true }, + { id: 'hstemhm', min: 2, stackClearing: true, stem: true }, + { id: 'hintmask', min: 0, stackClearing: true }, + { id: 'cntrmask', min: 0, stackClearing: true }, + { id: 'rmoveto', min: 2, stackClearing: true }, + { id: 'hmoveto', min: 1, stackClearing: true }, + { id: 'vstemhm', min: 2, stackClearing: true, stem: true }, { id: 'rcurveline', min: 8, resetStack: true }, { id: 'rlinecurve', min: 8, resetStack: true }, { id: 'vvcurveto', min: 4, resetStack: true }, @@ -22159,6 +19972,7 @@ var CFFParser = (function CFFParserClosure() { var charStringsAndSeacs = this.parseCharStrings(charStringOffset); cff.charStrings = charStringsAndSeacs.charStrings; cff.seacs = charStringsAndSeacs.seacs; + cff.widths = charStringsAndSeacs.widths; var fontMatrix = topDict.getByName('FontMatrix'); if (fontMatrix) { @@ -22203,12 +20017,17 @@ var CFFParser = (function CFFParserClosure() { }, parseHeader: function CFFParser_parseHeader() { var bytes = this.bytes; + var bytesLength = bytes.length; var offset = 0; - while (bytes[offset] != 1) + // Prevent an infinite loop, by checking that the offset is within the + // bounds of the bytes array. Necessary in empty, or invalid, font files. + while (offset < bytesLength && bytes[offset] !== 1) { ++offset; - - if (offset !== 0) { + } + if (offset >= bytesLength) { + error('Invalid CFF header'); + } else if (offset !== 0) { info('cff data is shifted'); bytes = bytes.subarray(offset); this.bytes = bytes; @@ -22218,7 +20037,7 @@ var CFFParser = (function CFFParserClosure() { var hdrSize = bytes[2]; var offSize = bytes[3]; var header = new CFFHeader(major, minor, hdrSize, offSize); - return {obj: header, endPos: hdrSize}; + return { obj: header, endPos: hdrSize }; }, parseDict: function CFFParser_parseDict(dict) { var pos = 0; @@ -22260,12 +20079,14 @@ var CFFParser = (function CFFParserClosure() { var b1 = b >> 4; var b2 = b & 15; - if (b1 == eof) + if (b1 === eof) { break; + } str += lookup[b1]; - if (b2 == eof) + if (b2 === eof) { break; + } str += lookup[b2]; } return parseFloat(str); @@ -22274,13 +20095,14 @@ var CFFParser = (function CFFParserClosure() { var operands = []; var entries = []; - var pos = 0; + pos = 0; var end = dict.length; while (pos < end) { var b = dict[pos]; if (b <= 21) { - if (b === 12) + if (b === 12) { b = (b << 8) | dict[++pos]; + } entries.push([b, operands]); operands = []; ++pos; @@ -22295,15 +20117,15 @@ var CFFParser = (function CFFParserClosure() { var bytes = this.bytes; var count = (bytes[pos++] << 8) | bytes[pos++]; var offsets = []; - var start = pos; var end = pos; + var i, ii; if (count !== 0) { var offsetSize = bytes[pos++]; // add 1 for offset to determine size of last object var startPos = pos + ((count + 1) * offsetSize) - 1; - for (var i = 0, ii = count + 1; i < ii; ++i) { + for (i = 0, ii = count + 1; i < ii; ++i) { var offset = 0; for (var j = 0; j < offsetSize; ++j) { offset <<= 8; @@ -22313,7 +20135,7 @@ var CFFParser = (function CFFParserClosure() { } end = offsets[count]; } - for (var i = 0, ii = offsets.length - 1; i < ii; ++i) { + for (i = 0, ii = offsets.length - 1; i < ii; ++i) { var offsetStart = offsets[i]; var offsetEnd = offsets[i + 1]; cffIndex.add(bytes.subarray(offsetStart, offsetEnd)); @@ -22337,13 +20159,13 @@ var CFFParser = (function CFFParserClosure() { if ((c < 33 || c > 126) || c === 91 /* [ */ || c === 93 /* ] */ || c === 40 /* ( */ || c === 41 /* ) */ || c === 123 /* { */ || c === 125 /* } */ || c === 60 /* < */ || c === 62 /* > */ || - c === 47 /* / */ || c === 37 /* % */) { + c === 47 /* / */ || c === 37 /* % */ || c === 35 /* # */) { data[j] = 95; continue; } data[j] = c; } - names.push(String.fromCharCode.apply(null, data)); + names.push(bytesToString(data)); } return names; }, @@ -22351,14 +20173,12 @@ var CFFParser = (function CFFParserClosure() { var strings = new CFFStrings(); for (var i = 0, ii = index.count; i < ii; ++i) { var data = index.get(i); - strings.add(String.fromCharCode.apply(null, data)); + strings.add(bytesToString(data)); } return strings; }, createDict: function CFFParser_createDict(Type, dict, strings) { var cffDict = new Type(strings); - var types = cffDict.types; - for (var i = 0, ii = dict.length; i < ii; ++i) { var pair = dict[i]; var key = pair[0]; @@ -22370,6 +20190,7 @@ var CFFParser = (function CFFParserClosure() { parseCharStrings: function CFFParser_parseCharStrings(charStringOffset) { var charStrings = this.parseIndex(charStringOffset).obj; var seacs = []; + var widths = []; var count = charStrings.count; for (var i = 0; i < count; i++) { var charstring = charStrings.get(i); @@ -22381,10 +20202,11 @@ var CFFParser = (function CFFParserClosure() { var valid = true; var data = charstring; var length = data.length; + var firstStackClearing = true; for (var j = 0; j < length;) { var value = data[j++]; var validationCommand = null; - if (value == 12) { + if (value === 12) { var q = data[j++]; if (q === 0) { // The CFF specification state that the 'dotsection' command @@ -22402,7 +20224,7 @@ var CFFParser = (function CFFParserClosure() { stack[stackSize] = ((data[j] << 24) | (data[j + 1] << 16)) >> 16; j += 2; stackSize++; - } else if (value == 14) { + } else if (value === 14) { if (stackSize >= 4) { stackSize -= 4; if (SEAC_ANALYSIS_ENABLED) { @@ -22410,24 +20232,26 @@ var CFFParser = (function CFFParserClosure() { valid = false; } } + validationCommand = CharstringValidationData[value]; } else if (value >= 32 && value <= 246) { // number stack[stackSize] = value - 139; stackSize++; } else if (value >= 247 && value <= 254) { // number (+1 bytes) - stack[stackSize] = value < 251 ? - ((value - 247) << 8) + data[j] + 108 : - -((value - 251) << 8) - data[j] - 108; + stack[stackSize] = (value < 251 ? + ((value - 247) << 8) + data[j] + 108 : + -((value - 251) << 8) - data[j] - 108); j++; stackSize++; - } else if (value == 255) { // number (32 bit) + } else if (value === 255) { // number (32 bit) stack[stackSize] = ((data[j] << 24) | (data[j + 1] << 16) | - (data[j + 2] << 8) | data[j + 3]) / 65536; + (data[j + 2] << 8) | data[j + 3]) / 65536; j += 4; stackSize++; - } else if (value == 19 || value == 20) { + } else if (value === 19 || value === 20) { hints += stackSize >> 1; j += (hints + 7) >> 3; // skipping right amount of hints flag data - stackSize = 0; + stackSize %= 2; + validationCommand = CharstringValidationData[value]; } else { validationCommand = CharstringValidationData[value]; } @@ -22444,17 +20268,35 @@ var CFFParser = (function CFFParserClosure() { break; } } + if (firstStackClearing && validationCommand.stackClearing) { + firstStackClearing = false; + // the optional character width can be found before the first + // stack-clearing command arguments + stackSize -= validationCommand.min; + if (stackSize >= 2 && validationCommand.stem) { + // there are even amount of arguments for stem commands + stackSize %= 2; + } else if (stackSize > 1) { + warn('Found too many parameters for stack-clearing command'); + } + if (stackSize > 0 && stack[stackSize - 1] >= 0) { + widths[i] = stack[stackSize - 1]; + } + } if ('stackDelta' in validationCommand) { if ('stackFn' in validationCommand) { validationCommand.stackFn(stack, stackSize); } stackSize += validationCommand.stackDelta; + } else if (validationCommand.stackClearing) { + stackSize = 0; } else if (validationCommand.resetStack) { stackSize = 0; undefStack = false; } else if (validationCommand.undefStack) { stackSize = 0; undefStack = true; + firstStackClearing = false; } } } @@ -22463,7 +20305,7 @@ var CFFParser = (function CFFParserClosure() { charStrings.set(i, new Uint8Array([14])); } } - return { charStrings: charStrings, seacs: seacs }; + return { charStrings: charStrings, seacs: seacs, widths: widths }; }, emptyPrivateDictionary: function CFFParser_emptyPrivateDictionary(parentDict) { @@ -22500,8 +20342,9 @@ var CFFParser = (function CFFParserClosure() { parentDict.privateDict = privateDict; // Parse the Subrs index also since it's relative to the private dict. - if (!privateDict.getByName('Subrs')) + if (!privateDict.getByName('Subrs')) { return; + } var subrsOffset = privateDict.getByName('Subrs'); var relativeOffset = offset + subrsOffset; // Validate the offset. @@ -22516,10 +20359,10 @@ var CFFParser = (function CFFParserClosure() { if (pos === 0) { return new CFFCharset(true, CFFCharsetPredefinedTypes.ISO_ADOBE, ISOAdobeCharset); - } else if (pos == 1) { + } else if (pos === 1) { return new CFFCharset(true, CFFCharsetPredefinedTypes.EXPERT, ExpertCharset); - } else if (pos == 2) { + } else if (pos === 2) { return new CFFCharset(true, CFFCharsetPredefinedTypes.EXPERT_SUBSET, ExpertSubsetCharset); } @@ -22528,31 +20371,34 @@ var CFFParser = (function CFFParserClosure() { var start = pos; var format = bytes[pos++]; var charset = ['.notdef']; + var id, count, i; // subtract 1 for the .notdef glyph length -= 1; switch (format) { case 0: - for (var i = 0; i < length; i++) { - var id = (bytes[pos++] << 8) | bytes[pos++]; + for (i = 0; i < length; i++) { + id = (bytes[pos++] << 8) | bytes[pos++]; charset.push(cid ? id : strings.get(id)); } break; case 1: while (charset.length <= length) { - var id = (bytes[pos++] << 8) | bytes[pos++]; - var count = bytes[pos++]; - for (var i = 0; i <= count; i++) + id = (bytes[pos++] << 8) | bytes[pos++]; + count = bytes[pos++]; + for (i = 0; i <= count; i++) { charset.push(cid ? id++ : strings.get(id++)); + } } break; case 2: while (charset.length <= length) { - var id = (bytes[pos++] << 8) | bytes[pos++]; - var count = (bytes[pos++] << 8) | bytes[pos++]; - for (var i = 0; i <= count; i++) + id = (bytes[pos++] << 8) | bytes[pos++]; + count = (bytes[pos++] << 8) | bytes[pos++]; + for (i = 0; i <= count; i++) { charset.push(cid ? id++ : strings.get(id++)); + } } break; default: @@ -22572,47 +20418,49 @@ var CFFParser = (function CFFParserClosure() { var bytes = this.bytes; var predefined = false; var hasSupplement = false; - var format; + var format, i, ii; var raw = null; function readSupplement() { var supplementsCount = bytes[pos++]; - for (var i = 0; i < supplementsCount; i++) { + for (i = 0; i < supplementsCount; i++) { var code = bytes[pos++]; var sid = (bytes[pos++] << 8) + (bytes[pos++] & 0xff); encoding[code] = charset.indexOf(strings.get(sid)); } } - if (pos === 0 || pos == 1) { + if (pos === 0 || pos === 1) { predefined = true; format = pos; var baseEncoding = pos ? Encodings.ExpertEncoding : Encodings.StandardEncoding; - for (var i = 0, ii = charset.length; i < ii; i++) { + for (i = 0, ii = charset.length; i < ii; i++) { var index = baseEncoding.indexOf(charset[i]); - if (index != -1) { + if (index !== -1) { encoding[index] = i; } } } else { var dataStart = pos; - var format = bytes[pos++]; + format = bytes[pos++]; switch (format & 0x7f) { case 0: var glyphsCount = bytes[pos++]; - for (var i = 1; i <= glyphsCount; i++) + for (i = 1; i <= glyphsCount; i++) { encoding[bytes[pos++]] = i; + } break; case 1: var rangesCount = bytes[pos++]; var gid = 1; - for (var i = 0; i < rangesCount; i++) { + for (i = 0; i < rangesCount; i++) { var start = bytes[pos++]; var left = bytes[pos++]; - for (var j = start; j <= start + left; j++) + for (var j = start; j <= start + left; j++) { encoding[j] = gid++; + } } break; @@ -22641,21 +20489,24 @@ var CFFParser = (function CFFParserClosure() { var bytes = this.bytes; var format = bytes[pos++]; var fdSelect = []; + var i; + switch (format) { case 0: - for (var i = 0; i < length; ++i) { + for (i = 0; i < length; ++i) { var id = bytes[pos++]; fdSelect.push(id); } break; case 3: var rangesCount = (bytes[pos++] << 8) | bytes[pos++]; - for (var i = 0; i < rangesCount; ++i) { + for (i = 0; i < rangesCount; ++i) { var first = (bytes[pos++] << 8) | bytes[pos++]; var fdIndex = bytes[pos++]; var next = (bytes[pos] << 8) | bytes[pos + 1]; - for (var j = first; j < next; ++j) + for (var j = first; j < next; ++j) { fdSelect.push(fdIndex); + } } // Advance past the sentinel(next). pos += 2; @@ -22709,10 +20560,12 @@ var CFFStrings = (function CFFStringsClosure() { } CFFStrings.prototype = { get: function CFFStrings_get(index) { - if (index >= 0 && index <= 390) + if (index >= 0 && index <= 390) { return CFFStandardStrings[index]; - if (index - 391 <= this.strings.length) + } + if (index - 391 <= this.strings.length) { return this.strings[index - 391]; + } return CFFStandardStrings[0]; }, add: function CFFStrings_add(value) { @@ -22763,15 +20616,18 @@ var CFFDict = (function CFFDictClosure() { CFFDict.prototype = { // value should always be an array setByKey: function CFFDict_setByKey(key, value) { - if (!(key in this.keyToNameMap)) + if (!(key in this.keyToNameMap)) { return false; + } // ignore empty values - if (value.length === 0) + if (value.length === 0) { return true; + } var type = this.types[key]; // remove the array wrapping these types of values - if (type === 'num' || type === 'sid' || type === 'offset') + if (type === 'num' || type === 'sid' || type === 'offset') { value = value[0]; + } this.values[key] = value; return true; }, @@ -22785,11 +20641,13 @@ var CFFDict = (function CFFDictClosure() { return this.nameToKeyMap[name] in this.values; }, getByName: function CFFDict_getByName(name) { - if (!(name in this.nameToKeyMap)) + if (!(name in this.nameToKeyMap)) { error('Invalid dictionary name "' + name + '"'); + } var key = this.nameToKeyMap[name]; - if (!(key in this.values)) + if (!(key in this.values)) { return this.defaults[key]; + } return this.values[key]; }, removeByName: function CFFDict_removeByName(name) { @@ -22862,8 +20720,9 @@ var CFFTopDict = (function CFFTopDictClosure() { ]; var tables = null; function CFFTopDict(strings) { - if (tables === null) + if (tables === null) { tables = CFFDict.createTables(layout); + } CFFDict.call(this, tables, strings); this.privateDict = null; } @@ -22894,8 +20753,9 @@ var CFFPrivateDict = (function CFFPrivateDictClosure() { ]; var tables = null; function CFFPrivateDict(strings) { - if (tables === null) + if (tables === null) { tables = CFFDict.createTables(layout); + } CFFDict.call(this, tables, strings); this.subrsIndex = null; } @@ -22908,11 +20768,6 @@ var CFFCharsetPredefinedTypes = { EXPERT: 1, EXPERT_SUBSET: 2 }; -var CFFCharsetEmbeddedTypes = { - FORMAT0: 0, - FORMAT1: 1, - FORMAT2: 2 -}; var CFFCharset = (function CFFCharsetClosure() { function CFFCharset(predefined, format, charset, raw) { this.predefined = predefined; @@ -22923,14 +20778,6 @@ var CFFCharset = (function CFFCharsetClosure() { return CFFCharset; })(); -var CFFEncodingPredefinedTypes = { - STANDARD: 0, - EXPERT: 1 -}; -var CFFCharsetEmbeddedTypes = { - FORMAT0: 0, - FORMAT1: 1 -}; var CFFEncoding = (function CFFEncodingClosure() { function CFFEncoding(predefined, format, encoding, raw) { this.predefined = predefined; @@ -22960,8 +20807,9 @@ var CFFOffsetTracker = (function CFFOffsetTrackerClosure() { return key in this.offsets; }, track: function CFFOffsetTracker_track(key, location) { - if (key in this.offsets) + if (key in this.offsets) { error('Already tracking location of ' + key); + } this.offsets[key] = location; }, offset: function CFFOffsetTracker_offset(value) { @@ -22972,8 +20820,9 @@ var CFFOffsetTracker = (function CFFOffsetTrackerClosure() { setEntryLocation: function CFFOffsetTracker_setEntryLocation(key, values, output) { - if (!(key in this.offsets)) + if (!(key in this.offsets)) { error('Not tracking location of ' + key); + } var data = output.data; var dataOffset = this.offsets[key]; var size = 5; @@ -22985,8 +20834,9 @@ var CFFOffsetTracker = (function CFFOffsetTrackerClosure() { var offset4 = offset0 + 4; // It's easy to screw up offsets so perform this sanity check. if (data[offset0] !== 0x1d || data[offset1] !== 0 || - data[offset2] !== 0 || data[offset3] !== 0 || data[offset4] !== 0) + data[offset2] !== 0 || data[offset3] !== 0 || data[offset4] !== 0) { error('writing to an offset that is not empty'); + } var value = values[i]; data[offset0] = 0x1d; data[offset1] = (value >> 24) & 0xFF; @@ -23001,13 +20851,6 @@ var CFFOffsetTracker = (function CFFOffsetTrackerClosure() { // Takes a CFF and converts it to the binary representation. var CFFCompiler = (function CFFCompilerClosure() { - function stringToArray(str) { - var array = []; - for (var i = 0, ii = str.length; i < ii; ++i) - array[i] = str.charCodeAt(i); - - return array; - } function CFFCompiler(cff) { this.cff = cff; } @@ -23104,7 +20947,7 @@ var CFFCompiler = (function CFFCompilerClosure() { output.add(fdSelect); // It is unclear if the sub font dictionary can have CID related // dictionary keys, but the sanitizer doesn't like them so remove them. - var compiled = this.compileTopDicts(cff.fdArray, output.length, true); + compiled = this.compileTopDicts(cff.fdArray, output.length, true); topDictTracker.setEntryLocation('FDArray', [output.length], output); output.add(compiled.output); var fontDictTrackers = compiled.trackers; @@ -23121,10 +20964,11 @@ var CFFCompiler = (function CFFCompilerClosure() { return output.data; }, encodeNumber: function CFFCompiler_encodeNumber(value) { - if (parseFloat(value) == parseInt(value, 10) && !isNaN(value)) // isInt + if (parseFloat(value) === parseInt(value, 10) && !isNaN(value)) { // isInt return this.encodeInteger(value); - else + } else { return this.encodeFloat(value); + } }, encodeFloat: function CFFCompiler_encodeFloat(num) { var value = num.toString(); @@ -23137,7 +20981,8 @@ var CFFCompiler = (function CFFCompilerClosure() { } var nibbles = ''; - for (var i = 0, ii = value.length; i < ii; ++i) { + var i, ii; + for (i = 0, ii = value.length; i < ii; ++i) { var a = value[i]; if (a === 'e') { nibbles += value[++i] === '-' ? 'c' : 'b'; @@ -23151,7 +20996,7 @@ var CFFCompiler = (function CFFCompilerClosure() { } nibbles += (nibbles.length & 1) ? 'f' : 'ff'; var out = [30]; - for (var i = 0, ii = nibbles.length; i < ii; i += 2) { + for (i = 0, ii = nibbles.length; i < ii; i += 2) { out.push(parseInt(nibbles.substr(i, 2), 16)); } return out; @@ -23187,8 +21032,9 @@ var CFFCompiler = (function CFFCompilerClosure() { }, compileNameIndex: function CFFCompiler_compileNameIndex(names) { var nameIndex = new CFFIndex(); - for (var i = 0, ii = names.length; i < ii; ++i) - nameIndex.add(stringToArray(names[i])); + for (var i = 0, ii = names.length; i < ii; ++i) { + nameIndex.add(stringToBytes(names[i])); + } return this.compileIndex(nameIndex); }, compileTopDicts: function CFFCompiler_compileTopDicts(dicts, @@ -23256,16 +21102,22 @@ var CFFCompiler = (function CFFCompilerClosure() { var order = dict.order; for (var i = 0; i < order.length; ++i) { var key = order[i]; - if (!(key in dict.values)) + if (!(key in dict.values)) { continue; + } var values = dict.values[key]; var types = dict.types[key]; - if (!isArray(types)) types = [types]; - if (!isArray(values)) values = [values]; + if (!isArray(types)) { + types = [types]; + } + if (!isArray(values)) { + values = [values]; + } // Remove any empty dict values. - if (values.length === 0) + if (values.length === 0) { continue; + } for (var j = 0, jj = types.length; j < jj; ++j) { var type = types[j]; @@ -23282,15 +21134,17 @@ var CFFCompiler = (function CFFCompilerClosure() { var name = dict.keyToNameMap[key]; // Some offsets have the offset and the length, so just record the // position of the first one. - if (!offsetTracker.isTracking(name)) + if (!offsetTracker.isTracking(name)) { offsetTracker.track(name, out.length); + } out = out.concat([0x1d, 0, 0, 0, 0]); break; case 'array': case 'delta': out = out.concat(this.encodeNumber(value)); - for (var k = 1, kk = values.length; k < kk; ++k) + for (var k = 1, kk = values.length; k < kk; ++k) { out = out.concat(this.encodeNumber(values[k])); + } break; default: error('Unknown data type of ' + type); @@ -23303,8 +21157,9 @@ var CFFCompiler = (function CFFCompilerClosure() { }, compileStringIndex: function CFFCompiler_compileStringIndex(strings) { var stringIndex = new CFFIndex(); - for (var i = 0, ii = strings.length; i < ii; ++i) - stringIndex.add(stringToArray(strings[i])); + for (var i = 0, ii = strings.length; i < ii; ++i) { + stringIndex.add(stringToBytes(strings[i])); + } return this.compileIndex(stringIndex); }, compileGlobalSubrIndex: function CFFCompiler_compileGlobalSubrIndex() { @@ -23325,8 +21180,9 @@ var CFFCompiler = (function CFFCompilerClosure() { }, compileTypedArray: function CFFCompiler_compileTypedArray(data) { var out = []; - for (var i = 0, ii = data.length; i < ii; ++i) + for (var i = 0, ii = data.length; i < ii; ++i) { out[i] = data[i]; + } return out; }, compileIndex: function CFFCompiler_compileIndex(index, trackers) { @@ -23337,31 +21193,34 @@ var CFFCompiler = (function CFFCompilerClosure() { // If there is no object, just create an index. This technically // should just be [0, 0] but OTS has an issue with that. - if (count === 0) + if (count === 0) { return [0, 0, 0]; + } var data = [(count >> 8) & 0xFF, count & 0xff]; - var lastOffset = 1; - for (var i = 0; i < count; ++i) + var lastOffset = 1, i; + for (i = 0; i < count; ++i) { lastOffset += objects[i].length; + } var offsetSize; - if (lastOffset < 0x100) + if (lastOffset < 0x100) { offsetSize = 1; - else if (lastOffset < 0x10000) + } else if (lastOffset < 0x10000) { offsetSize = 2; - else if (lastOffset < 0x1000000) + } else if (lastOffset < 0x1000000) { offsetSize = 3; - else + } else { offsetSize = 4; + } // Next byte contains the offset size use to reference object in the file data.push(offsetSize); // Add another offset after this one because we need a new offset var relativeOffset = 1; - for (var i = 0; i < count + 1; i++) { + for (i = 0; i < count + 1; i++) { if (offsetSize === 1) { data.push(relativeOffset & 0xFF); } else if (offsetSize === 2) { @@ -23378,17 +21237,19 @@ var CFFCompiler = (function CFFCompilerClosure() { relativeOffset & 0xFF); } - if (objects[i]) + if (objects[i]) { relativeOffset += objects[i].length; + } } - var offset = data.length; - for (var i = 0; i < count; i++) { + for (i = 0; i < count; i++) { // Notify the tracker where the object will be offset in the data. - if (trackers[i]) + if (trackers[i]) { trackers[i].offset(data.length); - for (var j = 0, jj = objects[i].length; j < jj; j++) + } + for (var j = 0, jj = objects[i].length; j < jj; j++) { data.push(objects[i][j]); + } } return data; } @@ -23408,7 +21269,7 @@ var CFFCompiler = (function CFFCompilerClosure() { // https://github.com/mozilla/pdf.js/issues/1689 (function checkChromeWindows() { if (/Windows.*Chrome/.test(navigator.userAgent)) { - SYMBOLIC_FONT_GLYPH_OFFSET = 0xF100; + SKIP_PRIVATE_USE_RANGE_F000_TO_F01F = true; } })(); @@ -23424,25 +21285,26 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { } function parseCmap(data, start, end) { - var offset = getUshort(data, start + 2) === 1 ? getLong(data, start + 8) : - getLong(data, start + 16); + var offset = (getUshort(data, start + 2) === 1 ? + getLong(data, start + 8) : getLong(data, start + 16)); var format = getUshort(data, start + offset); + var length, ranges, p, i; if (format === 4) { - var length = getUshort(data, start + offset + 2); + length = getUshort(data, start + offset + 2); var segCount = getUshort(data, start + offset + 6) >> 1; - var p = start + offset + 14; - var ranges = []; - for (var i = 0; i < segCount; i++, p += 2) { + p = start + offset + 14; + ranges = []; + for (i = 0; i < segCount; i++, p += 2) { ranges[i] = {end: getUshort(data, p)}; } p += 2; - for (var i = 0; i < segCount; i++, p += 2) { + for (i = 0; i < segCount; i++, p += 2) { ranges[i].start = getUshort(data, p); } - for (var i = 0; i < segCount; i++, p += 2) { + for (i = 0; i < segCount; i++, p += 2) { ranges[i].idDelta = getUshort(data, p); } - for (var i = 0; i < segCount; i++, p += 2) { + for (i = 0; i < segCount; i++, p += 2) { var idOffset = getUshort(data, p); if (idOffset === 0) { continue; @@ -23455,11 +21317,11 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { } return ranges; } else if (format === 12) { - var length = getLong(data, start + offset + 4); + length = getLong(data, start + offset + 4); var groups = getLong(data, start + offset + 12); - var p = start + offset + 16; - var ranges = []; - for (var i = 0; i < groups; i++) { + p = start + offset + 16; + ranges = []; + for (i = 0; i < groups; i++) { ranges.push({ start: getLong(data, p), end: getLong(data, p + 4), @@ -23474,13 +21336,13 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { function parseCff(data, start, end) { var properties = {}; - var parser = new CFFParser( - new Stream(data, start, end - start), properties); + var parser = new CFFParser(new Stream(data, start, end - start), + properties); var cff = parser.parse(); return { glyphs: cff.charStrings.objects, - subrs: cff.topDict.privateDict && cff.topDict.privateDict.subrsIndex && - cff.topDict.privateDict.subrsIndex.objects, + subrs: (cff.topDict.privateDict && cff.topDict.privateDict.subrsIndex && + cff.topDict.privateDict.subrsIndex.objects), gsubrs: cff.globalSubrIndex && cff.globalSubrIndex.objects }; } @@ -23541,16 +21403,13 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { var i = 0; var numberOfContours = ((code[i] << 24) | (code[i + 1] << 16)) >> 16; - var xMin = ((code[i + 2] << 24) | (code[i + 3] << 16)) >> 16; - var yMin = ((code[i + 4] << 24) | (code[i + 5] << 16)) >> 16; - var xMax = ((code[i + 6] << 24) | (code[i + 7] << 16)) >> 16; - var yMax = ((code[i + 8] << 24) | (code[i + 9] << 16)) >> 16; + var flags; + var x = 0, y = 0; i += 10; if (numberOfContours < 0) { // composite glyph - var x = 0, y = 0; do { - var flags = (code[i] << 8) | code[i + 1]; + flags = (code[i] << 8) | code[i + 1]; var glyphIndex = (code[i + 2] << 8) | code[i + 3]; i += 4; var arg1, arg2; @@ -23595,7 +21454,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { } else { // simple glyph var endPtsOfContours = []; - for (var j = 0; j < numberOfContours; j++) { + var j, jj; + for (j = 0; j < numberOfContours; j++) { endPtsOfContours.push((code[i] << 8) | code[i + 1]); i += 2; } @@ -23604,7 +21464,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { var numberOfPoints = endPtsOfContours[endPtsOfContours.length - 1] + 1; var points = []; while (points.length < numberOfPoints) { - var flags = code[i++], repeat = 1; + flags = code[i++]; + var repeat = 1; if ((flags & 0x08)) { repeat += code[i++]; } @@ -23612,8 +21473,7 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { points.push({flags: flags}); } } - var x = 0, y = 0; - for (var j = 0; j < numberOfPoints; j++) { + for (j = 0; j < numberOfPoints; j++) { switch (points[j].flags & 0x12) { case 0x00: x += ((code[i] << 24) | (code[i + 1] << 16)) >> 16; @@ -23628,7 +21488,7 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { } points[j].x = x; } - for (var j = 0; j < numberOfPoints; j++) { + for (j = 0; j < numberOfPoints; j++) { switch (points[j].flags & 0x24) { case 0x00: y += ((code[i] << 24) | (code[i + 1] << 16)) >> 16; @@ -23645,7 +21505,7 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { } var startPoint = 0; - for (var i = 0; i < numberOfContours; i++) { + for (i = 0; i < numberOfContours; i++) { var endPoint = endPtsOfContours[i]; // contours might have implicit points, which is located in the middle // between two neighboring off-curve points @@ -23666,7 +21526,7 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { contour.push(p); } moveTo(contour[0].x, contour[0].y); - for (var j = 1, jj = contour.length; j < jj; j++) { + for (j = 1, jj = contour.length; j < jj; j++) { if ((contour[j].flags & 1)) { lineTo(contour[j].x, contour[j].y); } else if ((contour[j + 1].flags & 1)){ @@ -23705,6 +21565,7 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { while (i < code.length) { var stackClean = false; var v = code[i++]; + var xa, xb, ya, yb, y1, y2, y3, n, subrCode; switch (v) { case 1: // hstem stems += stack.length >> 1; @@ -23750,15 +21611,15 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { break; case 8: // rrcurveto while (stack.length > 0) { - var xa = x + stack.shift(), ya = y + stack.shift(); - var xb = xa + stack.shift(), yb = ya + stack.shift(); + xa = x + stack.shift(); ya = y + stack.shift(); + xb = xa + stack.shift(); yb = ya + stack.shift(); x = xb + stack.shift(); y = yb + stack.shift(); bezierCurveTo(xa, ya, xb, yb, x, y); } break; case 10: // callsubr - var n = stack.pop() + font.subrsBias; - var subrCode = font.subrs[n]; + n = stack.pop() + font.subrsBias; + subrCode = font.subrs[n]; if (subrCode) { parse(subrCode); } @@ -23769,49 +21630,50 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { v = code[i++]; switch (v) { case 34: // flex - var xa = x + stack.shift(); - var xb = xa + stack.shift(), y1 = y + stack.shift(); + xa = x + stack.shift(); + xb = xa + stack.shift(); y1 = y + stack.shift(); x = xb + stack.shift(); bezierCurveTo(xa, y, xb, y1, x, y1); - var xa = x + stack.shift(); - var xb = xa + stack.shift(); + xa = x + stack.shift(); + xb = xa + stack.shift(); x = xb + stack.shift(); bezierCurveTo(xa, y1, xb, y, x, y); break; case 35: // flex - var xa = x + stack.shift(), ya = y + stack.shift(); - var xb = xa + stack.shift(), yb = ya + stack.shift(); + xa = x + stack.shift(); ya = y + stack.shift(); + xb = xa + stack.shift(); yb = ya + stack.shift(); x = xb + stack.shift(); y = yb + stack.shift(); bezierCurveTo(xa, ya, xb, yb, x, y); - var xa = x + stack.shift(), ya = y + stack.shift(); - var xb = xa + stack.shift(), yb = ya + stack.shift(); + xa = x + stack.shift(); ya = y + stack.shift(); + xb = xa + stack.shift(); yb = ya + stack.shift(); x = xb + stack.shift(); y = yb + stack.shift(); bezierCurveTo(xa, ya, xb, yb, x, y); stack.pop(); // fd break; case 36: // hflex1 - var xa = x + stack.shift(), y1 = y + stack.shift(); - var xb = xa + stack.shift(), y2 = y1 + stack.shift(); + xa = x + stack.shift(); y1 = y + stack.shift(); + xb = xa + stack.shift(); y2 = y1 + stack.shift(); x = xb + stack.shift(); bezierCurveTo(xa, y1, xb, y2, x, y2); - var xa = x + stack.shift(); - var xb = xa + stack.shift(), y3 = y2 + stack.shift(); + xa = x + stack.shift(); + xb = xa + stack.shift(); y3 = y2 + stack.shift(); x = xb + stack.shift(); bezierCurveTo(xa, y2, xb, y3, x, y); break; case 37: // flex1 var x0 = x, y0 = y; - var xa = x + stack.shift(), ya = y + stack.shift(); - var xb = xa + stack.shift(), yb = ya + stack.shift(); + xa = x + stack.shift(); ya = y + stack.shift(); + xb = xa + stack.shift(); yb = ya + stack.shift(); x = xb + stack.shift(); y = yb + stack.shift(); bezierCurveTo(xa, ya, xb, yb, x, y); - var xa = x + stack.shift(), ya = y + stack.shift(); - var xb = xa + stack.shift(), yb = ya + stack.shift(); + xa = x + stack.shift(); ya = y + stack.shift(); + xb = xa + stack.shift(); yb = ya + stack.shift(); x = xb; y = yb; - if (Math.abs(x - x0) > Math.abs(y - y0)) + if (Math.abs(x - x0) > Math.abs(y - y0)) { x += stack.shift(); - else + } else { y += stack.shift(); + } bezierCurveTo(xa, ya, xb, yb, x, y); break; default: @@ -23867,8 +21729,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { break; case 24: // rcurveline while (stack.length > 2) { - var xa = x + stack.shift(), ya = y + stack.shift(); - var xb = xa + stack.shift(), yb = ya + stack.shift(); + xa = x + stack.shift(); ya = y + stack.shift(); + xb = xa + stack.shift(); yb = ya + stack.shift(); x = xb + stack.shift(); y = yb + stack.shift(); bezierCurveTo(xa, ya, xb, yb, x, y); } @@ -23882,8 +21744,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { y += stack.shift(); lineTo(x, y); } - var xa = x + stack.shift(), ya = y + stack.shift(); - var xb = xa + stack.shift(), yb = ya + stack.shift(); + xa = x + stack.shift(); ya = y + stack.shift(); + xb = xa + stack.shift(); yb = ya + stack.shift(); x = xb + stack.shift(); y = yb + stack.shift(); bezierCurveTo(xa, ya, xb, yb, x, y); break; @@ -23892,8 +21754,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { x += stack.shift(); } while (stack.length > 0) { - var xa = x, ya = y + stack.shift(); - var xb = xa + stack.shift(), yb = ya + stack.shift(); + xa = x; ya = y + stack.shift(); + xb = xa + stack.shift(); yb = ya + stack.shift(); x = xb; y = yb + stack.shift(); bezierCurveTo(xa, ya, xb, yb, x, y); } @@ -23903,8 +21765,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { y += stack.shift(); } while (stack.length > 0) { - var xa = x + stack.shift(), ya = y; - var xb = xa + stack.shift(), yb = ya + stack.shift(); + xa = x + stack.shift(); ya = y; + xb = xa + stack.shift(); yb = ya + stack.shift(); x = xb + stack.shift(); y = yb; bezierCurveTo(xa, ya, xb, yb, x, y); } @@ -23914,16 +21776,16 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { i += 2; break; case 29: // callgsubr - var n = stack.pop() + font.gsubrsBias; - var subrCode = font.gsubrs[n]; + n = stack.pop() + font.gsubrsBias; + subrCode = font.gsubrs[n]; if (subrCode) { parse(subrCode); } break; case 30: // vhcurveto while (stack.length > 0) { - var xa = x, ya = y + stack.shift(); - var xb = xa + stack.shift(), yb = ya + stack.shift(); + xa = x; ya = y + stack.shift(); + xb = xa + stack.shift(); yb = ya + stack.shift(); x = xb + stack.shift(); y = yb + (stack.length === 1 ? stack.shift() : 0); bezierCurveTo(xa, ya, xb, yb, x, y); @@ -23931,8 +21793,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { break; } - var xa = x + stack.shift(), ya = y; - var xb = xa + stack.shift(), yb = ya + stack.shift(); + xa = x + stack.shift(); ya = y; + xb = xa + stack.shift(); yb = ya + stack.shift(); y = yb + stack.shift(); x = xb + (stack.length === 1 ? stack.shift() : 0); bezierCurveTo(xa, ya, xb, yb, x, y); @@ -23940,8 +21802,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { break; case 31: // hvcurveto while (stack.length > 0) { - var xa = x + stack.shift(), ya = y; - var xb = xa + stack.shift(), yb = ya + stack.shift(); + xa = x + stack.shift(); ya = y; + xb = xa + stack.shift(); yb = ya + stack.shift(); y = yb + stack.shift(); x = xb + (stack.length === 1 ? stack.shift() : 0); bezierCurveTo(xa, ya, xb, yb, x, y); @@ -23949,23 +21811,24 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { break; } - var xa = x, ya = y + stack.shift(); - var xb = xa + stack.shift(), yb = ya + stack.shift(); + xa = x; ya = y + stack.shift(); + xb = xa + stack.shift(); yb = ya + stack.shift(); x = xb + stack.shift(); y = yb + (stack.length === 1 ? stack.shift() : 0); bezierCurveTo(xa, ya, xb, yb, x, y); } break; default: - if (v < 32) + if (v < 32) { error('unknown operator: ' + v); - if (v < 247) + } + if (v < 247) { stack.push(v - 139); - else if (v < 251) + } else if (v < 251) { stack.push((v - 247) * 256 + code[i++] + 108); - else if (v < 255) + } else if (v < 255) { stack.push(-(v - 251) * 256 - code[i++] - 108); - else { + } else { stack.push(((code[i] << 24) | (code[i + 1] << 16) | (code[i + 2] << 8) | code[i + 3]) / 65536); i += 4; @@ -24049,10 +21912,10 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { this.glyphNameMap = glyphNameMap || GlyphsUnicode; this.compiledGlyphs = []; - this.gsubrsBias = this.gsubrs.length < 1240 ? 107 : - this.gsubrs.length < 33900 ? 1131 : 32768; - this.subrsBias = this.subrs.length < 1240 ? 107 : - this.subrs.length < 33900 ? 1131 : 32768; + this.gsubrsBias = (this.gsubrs.length < 1240 ? + 107 : (this.gsubrs.length < 33900 ? 1131 : 32768)); + this.subrsBias = (this.subrs.length < 1240 ? + 107 : (this.subrs.length < 33900 ? 1131 : 32768)); } Util.inherit(Type2Compiled, CompiledFont, { @@ -24068,7 +21931,7 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { var cmap, glyf, loca, cff, indexToLocFormat, unitsPerEm; var numTables = getUshort(data, 4); for (var i = 0, p = 12; i < numTables; i++, p += 16) { - var tag = String.fromCharCode.apply(null, data.subarray(p, p + 4)); + var tag = bytesToString(data.subarray(p, p + 4)); var offset = getLong(data, p + 8); var length = getLong(data, p + 12); switch (tag) { @@ -24092,8 +21955,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { } if (glyf) { - var fontMatrix = !unitsPerEm ? font.fontMatrix : - [1 / unitsPerEm, 0, 0, 1 / unitsPerEm, 0, 0]; + var fontMatrix = (!unitsPerEm ? font.fontMatrix : + [1 / unitsPerEm, 0, 0, 1 / unitsPerEm, 0, 0]); return new TrueTypeCompiled( parseGlyfTable(glyf, loca, indexToLocFormat), cmap, fontMatrix); } else { @@ -28312,6 +26175,211 @@ var GlyphsUnicode = { '.notdef': 0x0000 }; +var DingbatsGlyphsUnicode = { + space: 0x0020, + a1: 0x2701, + a2: 0x2702, + a202: 0x2703, + a3: 0x2704, + a4: 0x260E, + a5: 0x2706, + a119: 0x2707, + a118: 0x2708, + a117: 0x2709, + a11: 0x261B, + a12: 0x261E, + a13: 0x270C, + a14: 0x270D, + a15: 0x270E, + a16: 0x270F, + a105: 0x2710, + a17: 0x2711, + a18: 0x2712, + a19: 0x2713, + a20: 0x2714, + a21: 0x2715, + a22: 0x2716, + a23: 0x2717, + a24: 0x2718, + a25: 0x2719, + a26: 0x271A, + a27: 0x271B, + a28: 0x271C, + a6: 0x271D, + a7: 0x271E, + a8: 0x271F, + a9: 0x2720, + a10: 0x2721, + a29: 0x2722, + a30: 0x2723, + a31: 0x2724, + a32: 0x2725, + a33: 0x2726, + a34: 0x2727, + a35: 0x2605, + a36: 0x2729, + a37: 0x272A, + a38: 0x272B, + a39: 0x272C, + a40: 0x272D, + a41: 0x272E, + a42: 0x272F, + a43: 0x2730, + a44: 0x2731, + a45: 0x2732, + a46: 0x2733, + a47: 0x2734, + a48: 0x2735, + a49: 0x2736, + a50: 0x2737, + a51: 0x2738, + a52: 0x2739, + a53: 0x273A, + a54: 0x273B, + a55: 0x273C, + a56: 0x273D, + a57: 0x273E, + a58: 0x273F, + a59: 0x2740, + a60: 0x2741, + a61: 0x2742, + a62: 0x2743, + a63: 0x2744, + a64: 0x2745, + a65: 0x2746, + a66: 0x2747, + a67: 0x2748, + a68: 0x2749, + a69: 0x274A, + a70: 0x274B, + a71: 0x25CF, + a72: 0x274D, + a73: 0x25A0, + a74: 0x274F, + a203: 0x2750, + a75: 0x2751, + a204: 0x2752, + a76: 0x25B2, + a77: 0x25BC, + a78: 0x25C6, + a79: 0x2756, + a81: 0x25D7, + a82: 0x2758, + a83: 0x2759, + a84: 0x275A, + a97: 0x275B, + a98: 0x275C, + a99: 0x275D, + a100: 0x275E, + a101: 0x2761, + a102: 0x2762, + a103: 0x2763, + a104: 0x2764, + a106: 0x2765, + a107: 0x2766, + a108: 0x2767, + a112: 0x2663, + a111: 0x2666, + a110: 0x2665, + a109: 0x2660, + a120: 0x2460, + a121: 0x2461, + a122: 0x2462, + a123: 0x2463, + a124: 0x2464, + a125: 0x2465, + a126: 0x2466, + a127: 0x2467, + a128: 0x2468, + a129: 0x2469, + a130: 0x2776, + a131: 0x2777, + a132: 0x2778, + a133: 0x2779, + a134: 0x277A, + a135: 0x277B, + a136: 0x277C, + a137: 0x277D, + a138: 0x277E, + a139: 0x277F, + a140: 0x2780, + a141: 0x2781, + a142: 0x2782, + a143: 0x2783, + a144: 0x2784, + a145: 0x2785, + a146: 0x2786, + a147: 0x2787, + a148: 0x2788, + a149: 0x2789, + a150: 0x278A, + a151: 0x278B, + a152: 0x278C, + a153: 0x278D, + a154: 0x278E, + a155: 0x278F, + a156: 0x2790, + a157: 0x2791, + a158: 0x2792, + a159: 0x2793, + a160: 0x2794, + a161: 0x2192, + a163: 0x2194, + a164: 0x2195, + a196: 0x2798, + a165: 0x2799, + a192: 0x279A, + a166: 0x279B, + a167: 0x279C, + a168: 0x279D, + a169: 0x279E, + a170: 0x279F, + a171: 0x27A0, + a172: 0x27A1, + a173: 0x27A2, + a162: 0x27A3, + a174: 0x27A4, + a175: 0x27A5, + a176: 0x27A6, + a177: 0x27A7, + a178: 0x27A8, + a179: 0x27A9, + a193: 0x27AA, + a180: 0x27AB, + a199: 0x27AC, + a181: 0x27AD, + a200: 0x27AE, + a182: 0x27AF, + a201: 0x27B1, + a183: 0x27B2, + a184: 0x27B3, + a197: 0x27B4, + a185: 0x27B5, + a194: 0x27B6, + a198: 0x27B7, + a186: 0x27B8, + a195: 0x27B9, + a187: 0x27BA, + a188: 0x27BB, + a189: 0x27BC, + a190: 0x27BD, + a191: 0x27BE, + a89: 0x2768, // 0xF8D7 + a90: 0x2769, // 0xF8D8 + a93: 0x276A, // 0xF8D9 + a94: 0x276B, // 0xF8DA + a91: 0x276C, // 0xF8DB + a92: 0x276D, // 0xF8DC + a205: 0x276E, // 0xF8DD + a85: 0x276F, // 0xF8DE + a206: 0x2770, // 0xF8DF + a86: 0x2771, // 0xF8E0 + a87: 0x2772, // 0xF8E1 + a88: 0x2773, // 0xF8E2 + a95: 0x2774, // 0xF8E3 + a96: 0x2775, // 0xF8E4 + '.notdef': 0x0000 +}; var PDFImage = (function PDFImageClosure() { @@ -28319,22 +26387,24 @@ var PDFImage = (function PDFImageClosure() { * Decode the image in the main thread if it supported. Resovles the promise * when the image data is ready. */ - function handleImageData(handler, xref, res, image, promise) { + function handleImageData(handler, xref, res, image) { if (image instanceof JpegStream && image.isNativelyDecodable(xref, res)) { // For natively supported jpegs send them to the main thread for decoding. var dict = image.dict; var colorSpace = dict.get('ColorSpace', 'CS'); colorSpace = ColorSpace.parse(colorSpace, xref, res); var numComps = colorSpace.numComps; - handler.send('JpegDecode', [image.getIR(), numComps], function(message) { + var decodePromise = handler.sendWithPromise('JpegDecode', + [image.getIR(), numComps]); + return decodePromise.then(function (message) { var data = message.data; - var stream = new Stream(data, 0, data.length, image.dict); - promise.resolve(stream); + return new Stream(data, 0, data.length, image.dict); }); } else { - promise.resolve(image); + return Promise.resolve(image); } } + /** * Decode and clamp a value. The formula is different from the spec because we * don't decode to float range [0,1], we decode it in the [0,max] range. @@ -28342,26 +26412,34 @@ var PDFImage = (function PDFImageClosure() { function decodeAndClamp(value, addend, coefficient, max) { value = addend + value * coefficient; // Clamp the value to the range - return value < 0 ? 0 : value > max ? max : value; + return (value < 0 ? 0 : (value > max ? max : value)); } + function PDFImage(xref, res, image, inline, smask, mask, isMask) { this.image = image; - if (image.getParams) { - // JPX/JPEG2000 streams directly contain bits per component - // and color space mode information. - warn('get params from actual stream'); - // var bits = ... - // var colorspace = ... + var dict = image.dict; + if (dict.has('Filter')) { + var filter = dict.get('Filter').name; + if (filter === 'JPXDecode') { + var jpxImage = new JpxImage(); + jpxImage.parseImageProperties(image.stream); + image.stream.reset(); + image.bitsPerComponent = jpxImage.bitsPerComponent; + image.numComps = jpxImage.componentsCount; + } else if (filter === 'JBIG2Decode') { + image.bitsPerComponent = 1; + image.numComps = 1; + } } // TODO cache rendered images? - var dict = image.dict; this.width = dict.get('Width', 'W'); this.height = dict.get('Height', 'H'); - if (this.width < 1 || this.height < 1) + if (this.width < 1 || this.height < 1) { error('Invalid image width: ' + this.width + ' or height: ' + this.height); + } this.interpolate = dict.get('Interpolate', 'I') || false; this.imageMask = dict.get('ImageMask', 'IM') || false; @@ -28371,10 +26449,11 @@ var PDFImage = (function PDFImageClosure() { if (!bitsPerComponent) { bitsPerComponent = dict.get('BitsPerComponent', 'BPC'); if (!bitsPerComponent) { - if (this.imageMask) + if (this.imageMask) { bitsPerComponent = 1; - else + } else { error('Bits per component missing in image: ' + this.imageMask); + } } } this.bpc = bitsPerComponent; @@ -28382,8 +26461,21 @@ var PDFImage = (function PDFImageClosure() { if (!this.imageMask) { var colorSpace = dict.get('ColorSpace', 'CS'); if (!colorSpace) { - warn('JPX images (which don"t require color spaces'); - colorSpace = new Name('DeviceRGB'); + info('JPX images (which do not require color spaces)'); + switch (image.numComps) { + case 1: + colorSpace = Name.get('DeviceGray'); + break; + case 3: + colorSpace = Name.get('DeviceRGB'); + break; + case 4: + colorSpace = Name.get('DeviceCMYK'); + break; + default: + error('JPX images with ' + this.numComps + + ' color components not supported.'); + } } this.colorSpace = ColorSpace.parse(colorSpace, xref, res); this.numComps = this.colorSpace.numComps; @@ -28419,51 +26511,47 @@ var PDFImage = (function PDFImageClosure() { } } /** - * Handles processing of image data and calls the callback with an argument - * of a PDFImage when the image is ready to be used. + * Handles processing of image data and returns the Promise that is resolved + * with a PDFImage when the image is ready to be used. */ - PDFImage.buildImage = function PDFImage_buildImage(callback, handler, xref, + PDFImage.buildImage = function PDFImage_buildImage(handler, xref, res, image, inline) { - var imageDataPromise = new LegacyPromise(); - var smaskPromise = new LegacyPromise(); - var maskPromise = new LegacyPromise(); - // The image data and smask data may not be ready yet, wait till both are - // resolved. - Promise.all([imageDataPromise, smaskPromise, maskPromise]).then( - function(results) { - var imageData = results[0], smaskData = results[1], maskData = results[2]; - var image = new PDFImage(xref, res, imageData, inline, smaskData, - maskData); - callback(image); - }); - - handleImageData(handler, xref, res, image, imageDataPromise); + var imagePromise = handleImageData(handler, xref, res, image); + var smaskPromise; + var maskPromise; var smask = image.dict.get('SMask'); var mask = image.dict.get('Mask'); if (smask) { - handleImageData(handler, xref, res, smask, smaskPromise); - maskPromise.resolve(null); + smaskPromise = handleImageData(handler, xref, res, smask); + maskPromise = Promise.resolve(null); } else { - smaskPromise.resolve(null); + smaskPromise = Promise.resolve(null); if (mask) { if (isStream(mask)) { - handleImageData(handler, xref, res, mask, maskPromise); + maskPromise = handleImageData(handler, xref, res, mask); } else if (isArray(mask)) { - maskPromise.resolve(mask); + maskPromise = Promise.resolve(mask); } else { warn('Unsupported mask format.'); - maskPromise.resolve(null); + maskPromise = Promise.resolve(null); } } else { - maskPromise.resolve(null); + maskPromise = Promise.resolve(null); } } + return Promise.all([imagePromise, smaskPromise, maskPromise]).then( + function(results) { + var imageData = results[0]; + var smaskData = results[1]; + var maskData = results[2]; + return new PDFImage(xref, res, imageData, inline, smaskData, maskData); + }); }; /** - * Resize an image using the nearest neighbor algorithm. Currently only + * Resize an image using the nearest neighbor algorithm. Currently only * supports one and three component images. * @param {TypedArray} pixels The original image with one component. * @param {Number} bpc Number of bits per component. @@ -28472,49 +26560,92 @@ var PDFImage = (function PDFImageClosure() { * @param {Number} h1 Original height. * @param {Number} w2 New width. * @param {Number} h2 New height. + * @param {TypedArray} dest (Optional) The destination buffer. + * @param {Number} alpha01 (Optional) Size reserved for the alpha channel. * @return {TypedArray} Resized image data. */ PDFImage.resize = function PDFImage_resize(pixels, bpc, components, - w1, h1, w2, h2) { + w1, h1, w2, h2, dest, alpha01) { + + if (components !== 1 && components !== 3) { + error('Unsupported component count for resizing.'); + } + var length = w2 * h2 * components; - var temp = bpc <= 8 ? new Uint8Array(length) : - bpc <= 16 ? new Uint16Array(length) : new Uint32Array(length); + var temp = dest ? dest : (bpc <= 8 ? new Uint8Array(length) : + (bpc <= 16 ? new Uint16Array(length) : new Uint32Array(length))); var xRatio = w1 / w2; var yRatio = h1 / h2; - var px, py, newIndex, oldIndex; - for (var i = 0; i < h2; i++) { - for (var j = 0; j < w2; j++) { - px = Math.floor(j * xRatio); - py = Math.floor(i * yRatio); - newIndex = (i * w2) + j; - oldIndex = ((py * w1) + px); - if (components === 1) { - temp[newIndex] = pixels[oldIndex]; - } else if (components === 3) { - newIndex *= 3; - oldIndex *= 3; - temp[newIndex] = pixels[oldIndex]; - temp[newIndex + 1] = pixels[oldIndex + 1]; - temp[newIndex + 2] = pixels[oldIndex + 2]; + var i, j, py, newIndex = 0, oldIndex; + var xScaled = new Uint16Array(w2); + var w1Scanline = w1 * components; + if (alpha01 !== 1) { + alpha01 = 0; + } + + for (j = 0; j < w2; j++) { + xScaled[j] = Math.floor(j * xRatio) * components; + } + + if (components === 1) { + for (i = 0; i < h2; i++) { + py = Math.floor(i * yRatio) * w1Scanline; + for (j = 0; j < w2; j++) { + oldIndex = py + xScaled[j]; + temp[newIndex++] = pixels[oldIndex]; + } + } + } else if (components === 3) { + for (i = 0; i < h2; i++) { + py = Math.floor(i * yRatio) * w1Scanline; + for (j = 0; j < w2; j++) { + oldIndex = py + xScaled[j]; + temp[newIndex++] = pixels[oldIndex++]; + temp[newIndex++] = pixels[oldIndex++]; + temp[newIndex++] = pixels[oldIndex++]; + newIndex += alpha01; } } } return temp; }; - PDFImage.createMask = function PDFImage_createMask(imgArray, width, height, - inverseDecode) { - // Copy imgArray into a typed array (inverting if necessary) so it can be - // transferred to the main thread. - var length = ((width + 7) >> 3) * height; - var data = new Uint8Array(length); - if (inverseDecode) { - for (var i = 0; i < length; i++) { - data[i] = ~imgArray[i]; - } + PDFImage.createMask = + function PDFImage_createMask(imgArray, width, height, + imageIsFromDecodeStream, inverseDecode) { + + // |imgArray| might not contain full data for every pixel of the mask, so + // we need to distinguish between |computedLength| and |actualLength|. + // In particular, if inverseDecode is true, then the array we return must + // have a length of |computedLength|. + + var computedLength = ((width + 7) >> 3) * height; + var actualLength = imgArray.byteLength; + var haveFullData = computedLength === actualLength; + var data, i; + + if (imageIsFromDecodeStream && (!inverseDecode || haveFullData)) { + // imgArray came from a DecodeStream and its data is in an appropriate + // form, so we can just transfer it. + data = imgArray; + } else if (!inverseDecode) { + data = new Uint8Array(actualLength); + data.set(imgArray); } else { - for (var i = 0; i < length; i++) { - data[i] = imgArray[i]; + data = new Uint8Array(computedLength); + data.set(imgArray); + for (i = actualLength; i < computedLength; i++) { + data[i] = 0xff; + } + } + + // If necessary, invert the original mask data (but not any extra we might + // have added above). It's safe to modify the array -- whether it's the + // original or a copy, we're about to transfer it anyway, so nothing else + // in this thread can be relying on its contents. + if (inverseDecode) { + for (i = 0; i < actualLength; i++) { + data[i] = ~data[i]; } } @@ -28523,85 +26654,100 @@ var PDFImage = (function PDFImageClosure() { PDFImage.prototype = { get drawWidth() { - if (!this.smask) - return this.width; - return Math.max(this.width, this.smask.width); + return Math.max(this.width, + this.smask && this.smask.width || 0, + this.mask && this.mask.width || 0); }, + get drawHeight() { - if (!this.smask) - return this.height; - return Math.max(this.height, this.smask.height); + return Math.max(this.height, + this.smask && this.smask.height || 0, + this.mask && this.mask.height || 0); }, + decodeBuffer: function PDFImage_decodeBuffer(buffer) { var bpc = this.bpc; - var decodeMap = this.decode; var numComps = this.numComps; - var decodeAddends, decodeCoefficients; var decodeAddends = this.decodeAddends; var decodeCoefficients = this.decodeCoefficients; var max = (1 << bpc) - 1; + var i, ii; if (bpc === 1) { // If the buffer needed decode that means it just needs to be inverted. - for (var i = 0, ii = buffer.length; i < ii; i++) { + for (i = 0, ii = buffer.length; i < ii; i++) { buffer[i] = +!(buffer[i]); } return; } var index = 0; - for (var i = 0, ii = this.width * this.height; i < ii; i++) { + for (i = 0, ii = this.width * this.height; i < ii; i++) { for (var j = 0; j < numComps; j++) { buffer[index] = decodeAndClamp(buffer[index], decodeAddends[j], - decodeCoefficients[j], max); + decodeCoefficients[j], max); index++; } } }, + getComponents: function PDFImage_getComponents(buffer) { var bpc = this.bpc; // This image doesn't require any extra work. - if (bpc === 8) + if (bpc === 8) { return buffer; + } - var bufferLength = buffer.length; var width = this.width; var height = this.height; var numComps = this.numComps; var length = width * height * numComps; var bufferPos = 0; - var output = bpc <= 8 ? new Uint8Array(length) : - bpc <= 16 ? new Uint16Array(length) : new Uint32Array(length); + var output = (bpc <= 8 ? new Uint8Array(length) : + (bpc <= 16 ? new Uint16Array(length) : new Uint32Array(length))); var rowComps = width * numComps; var max = (1 << bpc) - 1; + var i = 0, ii, buf; if (bpc === 1) { // Optimization for reading 1 bpc images. - var mask = 0; - var buf = 0; + var mask, loop1End, loop2End; + for (var j = 0; j < height; j++) { + loop1End = i + (rowComps & ~7); + loop2End = i + rowComps; - for (var i = 0, ii = length; i < ii; ++i) { - if (i % rowComps === 0) { - mask = 0; - buf = 0; - } else { - mask >>= 1; + // unroll loop for all full bytes + while (i < loop1End) { + buf = buffer[bufferPos++]; + output[i] = (buf >> 7) & 1; + output[i + 1] = (buf >> 6) & 1; + output[i + 2] = (buf >> 5) & 1; + output[i + 3] = (buf >> 4) & 1; + output[i + 4] = (buf >> 3) & 1; + output[i + 5] = (buf >> 2) & 1; + output[i + 6] = (buf >> 1) & 1; + output[i + 7] = buf & 1; + i += 8; } - if (mask <= 0) { + // handle remaing bits + if (i < loop2End) { buf = buffer[bufferPos++]; mask = 128; + while (i < loop2End) { + output[i++] = +!!(buf & mask); + mask >>= 1; + } } - - output[i] = +!!(buf & mask); } } else { // The general case that handles all other bpc values. - var bits = 0, buf = 0; - for (var i = 0, ii = length; i < ii; ++i) { + var bits = 0; + buf = 0; + for (i = 0, ii = length; i < ii; ++i) { if (i % rowComps === 0) { buf = 0; bits = 0; @@ -28614,50 +26760,55 @@ var PDFImage = (function PDFImageClosure() { var remainingBits = bits - bpc; var value = buf >> remainingBits; - output[i] = value < 0 ? 0 : value > max ? max : value; + output[i] = (value < 0 ? 0 : (value > max ? max : value)); buf = buf & ((1 << remainingBits) - 1); bits = remainingBits; } } return output; }, - getOpacity: function PDFImage_getOpacity(width, height, image) { + + fillOpacity: function PDFImage_fillOpacity(rgbaBuf, width, height, + actualHeight, image) { var smask = this.smask; var mask = this.mask; - var originalWidth = this.width; - var originalHeight = this.height; - var buf; + var alphaBuf, sw, sh, i, ii, j; if (smask) { - var sw = smask.width; - var sh = smask.height; - buf = new Uint8Array(sw * sh); - smask.fillGrayBuffer(buf); - if (sw != width || sh != height) - buf = PDFImage.resize(buf, smask.bpc, 1, sw, sh, width, height); + sw = smask.width; + sh = smask.height; + alphaBuf = new Uint8Array(sw * sh); + smask.fillGrayBuffer(alphaBuf); + if (sw !== width || sh !== height) { + alphaBuf = PDFImage.resize(alphaBuf, smask.bpc, 1, sw, sh, width, + height); + } } else if (mask) { if (mask instanceof PDFImage) { - var sw = mask.width; - var sh = mask.height; - buf = new Uint8Array(sw * sh); + sw = mask.width; + sh = mask.height; + alphaBuf = new Uint8Array(sw * sh); mask.numComps = 1; - mask.fillGrayBuffer(buf); + mask.fillGrayBuffer(alphaBuf); - // Need to invert values in buffer - for (var i = 0, ii = sw * sh; i < ii; ++i) - buf[i] = 255 - buf[i]; + // Need to invert values in rgbaBuf + for (i = 0, ii = sw * sh; i < ii; ++i) { + alphaBuf[i] = 255 - alphaBuf[i]; + } - if (sw != width || sh != height) - buf = PDFImage.resize(buf, mask.bpc, 1, sw, sh, width, height); + if (sw !== width || sh !== height) { + alphaBuf = PDFImage.resize(alphaBuf, mask.bpc, 1, sw, sh, width, + height); + } } else if (isArray(mask)) { // Color key mask: if any of the compontents are outside the range // then they should be painted. - buf = new Uint8Array(width * height); + alphaBuf = new Uint8Array(width * height); var numComps = this.numComps; - for (var i = 0, ii = width * height; i < ii; ++i) { + for (i = 0, ii = width * height; i < ii; ++i) { var opacity = 0; var imageOffset = i * numComps; - for (var j = 0; j < numComps; ++j) { + for (j = 0; j < numComps; ++j) { var color = image[imageOffset + j]; var maskOffset = j * 2; if (color < mask[maskOffset] || color > mask[maskOffset + 1]) { @@ -28665,122 +26816,214 @@ var PDFImage = (function PDFImageClosure() { break; } } - buf[i] = opacity; + alphaBuf[i] = opacity; } } else { error('Unknown mask format.'); } - } else { - buf = new Uint8Array(width * height); - for (var i = 0, ii = width * height; i < ii; ++i) - buf[i] = 255; } - return buf; + + if (alphaBuf) { + for (i = 0, j = 3, ii = width * actualHeight; i < ii; ++i, j += 4) { + rgbaBuf[j] = alphaBuf[i]; + } + } else { + // No mask. + for (i = 0, j = 3, ii = width * actualHeight; i < ii; ++i, j += 4) { + rgbaBuf[j] = 255; + } + } }, + undoPreblend: function PDFImage_undoPreblend(buffer, width, height) { var matte = this.smask && this.smask.matte; if (!matte) { return; } - - function clamp(value) { - return (value < 0 ? 0 : value > 255 ? 255 : value) | 0; - } - var matteRgb = this.colorSpace.getRgb(matte, 0); + var matteR = matteRgb[0]; + var matteG = matteRgb[1]; + var matteB = matteRgb[2]; var length = width * height * 4; + var r, g, b; for (var i = 0; i < length; i += 4) { var alpha = buffer[i + 3]; if (alpha === 0) { // according formula we have to get Infinity in all components - // making it as white (tipical paper color) should be okay + // making it white (typical paper color) should be okay buffer[i] = 255; buffer[i + 1] = 255; buffer[i + 2] = 255; continue; } var k = 255 / alpha; - buffer[i] = clamp((buffer[i] - matteRgb[0]) * k + matteRgb[0]); - buffer[i + 1] = clamp((buffer[i + 1] - matteRgb[1]) * k + matteRgb[1]); - buffer[i + 2] = clamp((buffer[i + 2] - matteRgb[2]) * k + matteRgb[2]); + r = (buffer[i] - matteR) * k + matteR; + g = (buffer[i + 1] - matteG) * k + matteG; + b = (buffer[i + 2] - matteB) * k + matteB; + buffer[i] = r <= 0 ? 0 : r >= 255 ? 255 : r | 0; + buffer[i + 1] = g <= 0 ? 0 : g >= 255 ? 255 : g | 0; + buffer[i + 2] = b <= 0 ? 0 : b >= 255 ? 255 : b | 0; } }, - fillRgbaBuffer: function PDFImage_fillRgbaBuffer(buffer, width, height) { + + createImageData: function PDFImage_createImageData(forceRGBA) { + var drawWidth = this.drawWidth; + var drawHeight = this.drawHeight; + var imgData = { // other fields are filled in below + width: drawWidth, + height: drawHeight + }; + var numComps = this.numComps; var originalWidth = this.width; var originalHeight = this.height; var bpc = this.bpc; - // rows start at byte boundary; + // Rows start at byte boundary. var rowBytes = (originalWidth * numComps * bpc + 7) >> 3; - var imgArray = this.getImageBytes(originalHeight * rowBytes); + var imgArray; - // imgArray can be incomplete (e.g. after CCITT fax encoding) + if (!forceRGBA) { + // If it is a 1-bit-per-pixel grayscale (i.e. black-and-white) image + // without any complications, we pass a same-sized copy to the main + // thread rather than expanding by 32x to RGBA form. This saves *lots* + // of memory for many scanned documents. It's also much faster. + // + // Similarly, if it is a 24-bit-per pixel RGB image without any + // complications, we avoid expanding by 1.333x to RGBA form. + var kind; + if (this.colorSpace.name === 'DeviceGray' && bpc === 1) { + kind = ImageKind.GRAYSCALE_1BPP; + } else if (this.colorSpace.name === 'DeviceRGB' && bpc === 8 && + !this.needsDecode) { + kind = ImageKind.RGB_24BPP; + } + if (kind && !this.smask && !this.mask && + drawWidth === originalWidth && drawHeight === originalHeight) { + imgData.kind = kind; + + imgArray = this.getImageBytes(originalHeight * rowBytes); + // If imgArray came from a DecodeStream, we're safe to transfer it + // (and thus neuter it) because it will constitute the entire + // DecodeStream's data. But if it came from a Stream, we need to + // copy it because it'll only be a portion of the Stream's data, and + // the rest will be read later on. + if (this.image instanceof DecodeStream) { + imgData.data = imgArray; + } else { + var newArray = new Uint8Array(imgArray.length); + newArray.set(imgArray); + imgData.data = newArray; + } + if (this.needsDecode) { + // Invert the buffer (which must be grayscale if we reached here). + assert(kind === ImageKind.GRAYSCALE_1BPP); + var buffer = imgData.data; + for (var i = 0, ii = buffer.length; i < ii; i++) { + buffer[i] ^= 0xff; + } + } + return imgData; + } + if (this.image instanceof JpegStream && !this.smask && !this.mask) { + imgData.kind = ImageKind.RGB_24BPP; + imgData.data = this.getImageBytes(originalHeight * rowBytes, + drawWidth, drawHeight, true); + return imgData; + } + } + + imgArray = this.getImageBytes(originalHeight * rowBytes); + // imgArray can be incomplete (e.g. after CCITT fax encoding). var actualHeight = 0 | (imgArray.length / rowBytes * - height / originalHeight); + drawHeight / originalHeight); + var comps = this.getComponents(imgArray); - // Build opacity here since color key masking needs to be perormed on - // undecoded values. - var opacity = this.getOpacity(width, height, comps); + + // If opacity data is present, use RGBA_32BPP form. Otherwise, use the + // more compact RGB_24BPP form if allowable. + var alpha01, maybeUndoPreblend; + if (!forceRGBA && !this.smask && !this.mask) { + imgData.kind = ImageKind.RGB_24BPP; + imgData.data = new Uint8Array(drawWidth * drawHeight * 3); + alpha01 = 0; + maybeUndoPreblend = false; + } else { + imgData.kind = ImageKind.RGBA_32BPP; + imgData.data = new Uint8Array(drawWidth * drawHeight * 4); + alpha01 = 1; + maybeUndoPreblend = true; + + // Color key masking (opacity) must be performed before decoding. + this.fillOpacity(imgData.data, drawWidth, drawHeight, actualHeight, + comps); + } if (this.needsDecode) { this.decodeBuffer(comps); } - var rgbBuf = this.colorSpace.createRgbBuffer(comps, 0, - originalWidth * originalHeight, bpc); - if (originalWidth != width || originalHeight != height) - rgbBuf = PDFImage.resize(rgbBuf, this.bpc, 3, originalWidth, - originalHeight, width, height); - var compsPos = 0; - var opacityPos = 0; - var length = width * actualHeight * 4; - - for (var i = 0; i < length; i += 4) { - buffer[i] = rgbBuf[compsPos++]; - buffer[i + 1] = rgbBuf[compsPos++]; - buffer[i + 2] = rgbBuf[compsPos++]; - buffer[i + 3] = opacity[opacityPos++]; + this.colorSpace.fillRgb(imgData.data, originalWidth, originalHeight, + drawWidth, drawHeight, actualHeight, bpc, comps, + alpha01); + if (maybeUndoPreblend) { + this.undoPreblend(imgData.data, drawWidth, actualHeight); } - this.undoPreblend(buffer, width, actualHeight); + return imgData; }, + fillGrayBuffer: function PDFImage_fillGrayBuffer(buffer) { var numComps = this.numComps; - if (numComps != 1) + if (numComps !== 1) { error('Reading gray scale from a color image: ' + numComps); + } var width = this.width; var height = this.height; var bpc = this.bpc; - // rows start at byte boundary; + // rows start at byte boundary var rowBytes = (width * numComps * bpc + 7) >> 3; var imgArray = this.getImageBytes(height * rowBytes); var comps = this.getComponents(imgArray); + var i, length; + + if (bpc === 1) { + // inline decoding (= inversion) for 1 bpc images + length = width * height; + if (this.needsDecode) { + // invert and scale to {0, 255} + for (i = 0; i < length; ++i) { + buffer[i] = (comps[i] - 1) & 255; + } + } else { + // scale to {0, 255} + for (i = 0; i < length; ++i) { + buffer[i] = (-comps[i]) & 255; + } + } + return; + } + if (this.needsDecode) { this.decodeBuffer(comps); } - var length = width * height; + length = width * height; // we aren't using a colorspace so we need to scale the value var scale = 255 / ((1 << bpc) - 1); - for (var i = 0; i < length; ++i) + for (i = 0; i < length; ++i) { buffer[i] = (scale * comps[i]) | 0; + } }, - getImageData: function PDFImage_getImageData() { - var drawWidth = this.drawWidth; - var drawHeight = this.drawHeight; - var imgData = { - width: drawWidth, - height: drawHeight, - data: new Uint8Array(drawWidth * drawHeight * 4) - }; - var pixels = imgData.data; - this.fillRgbaBuffer(pixels, drawWidth, drawHeight); - return imgData; - }, - getImageBytes: function PDFImage_getImageBytes(length) { + + getImageBytes: function PDFImage_getImageBytes(length, + drawWidth, drawHeight, + forceRGB) { this.image.reset(); + this.image.drawWidth = drawWidth || this.width; + this.image.drawHeight = drawHeight || this.height; + this.image.forceRGB = !!forceRGB; return this.image.getBytes(length); } }; @@ -31735,7 +29978,7 @@ var Metrics = { var EOF = {}; function isEOF(v) { - return v == EOF; + return (v === EOF); } var Parser = (function ParserClosure() { @@ -31743,6 +29986,11 @@ var Parser = (function ParserClosure() { this.lexer = lexer; this.allowStreams = allowStreams; this.xref = xref; + this.imageCache = { + length: 0, + adler32: 0, + stream: null + }; this.refill(); } @@ -31761,51 +30009,58 @@ var Parser = (function ParserClosure() { } }, getObj: function Parser_getObj(cipherTransform) { - if (isCmd(this.buf1, 'BI')) { // inline image - this.shift(); - return this.makeInlineImage(cipherTransform); - } - if (isCmd(this.buf1, '[')) { // array - this.shift(); - var array = []; - while (!isCmd(this.buf1, ']') && !isEOF(this.buf1)) - array.push(this.getObj(cipherTransform)); - if (isEOF(this.buf1)) - error('End of file inside array'); - this.shift(); - return array; - } - if (isCmd(this.buf1, '<<')) { // dictionary or stream - this.shift(); - var dict = new Dict(this.xref); - while (!isCmd(this.buf1, '>>') && !isEOF(this.buf1)) { - if (!isName(this.buf1)) { - info('Malformed dictionary, key must be a name object'); + var buf1 = this.buf1; + this.shift(); + + if (buf1 instanceof Cmd) { + switch (buf1.cmd) { + case 'BI': // inline image + return this.makeInlineImage(cipherTransform); + case '[': // array + var array = []; + while (!isCmd(this.buf1, ']') && !isEOF(this.buf1)) { + array.push(this.getObj(cipherTransform)); + } + if (isEOF(this.buf1)) { + error('End of file inside array'); + } this.shift(); - continue; - } + return array; + case '<<': // dictionary or stream + var dict = new Dict(this.xref); + while (!isCmd(this.buf1, '>>') && !isEOF(this.buf1)) { + if (!isName(this.buf1)) { + info('Malformed dictionary: key must be a name object'); + this.shift(); + continue; + } - var key = this.buf1.name; - this.shift(); - if (isEOF(this.buf1)) - break; - dict.set(key, this.getObj(cipherTransform)); - } - if (isEOF(this.buf1)) - error('End of file inside dictionary'); + var key = this.buf1.name; + this.shift(); + if (isEOF(this.buf1)) { + break; + } + dict.set(key, this.getObj(cipherTransform)); + } + if (isEOF(this.buf1)) { + error('End of file inside dictionary'); + } - // stream objects are not allowed inside content streams or - // object streams - if (isCmd(this.buf2, 'stream')) { - return this.allowStreams ? - this.makeStream(dict, cipherTransform) : dict; + // Stream objects are not allowed inside content streams or + // object streams. + if (isCmd(this.buf2, 'stream')) { + return (this.allowStreams ? + this.makeStream(dict, cipherTransform) : dict); + } + this.shift(); + return dict; + default: // simple object + return buf1; } - this.shift(); - return dict; } - if (isInt(this.buf1)) { // indirect reference or integer - var num = this.buf1; - this.shift(); + + if (isInt(buf1)) { // indirect reference or integer + var num = buf1; if (isInt(this.buf1) && isCmd(this.buf2, 'R')) { var ref = new Ref(num, this.buf1); this.shift(); @@ -31814,33 +30069,34 @@ var Parser = (function ParserClosure() { } return num; } - if (isString(this.buf1)) { // string - var str = this.buf1; - this.shift(); - if (cipherTransform) + + if (isString(buf1)) { // string + var str = buf1; + if (cipherTransform) { str = cipherTransform.decryptString(str); + } return str; } // simple object - var obj = this.buf1; - this.shift(); - return obj; + return buf1; }, makeInlineImage: function Parser_makeInlineImage(cipherTransform) { var lexer = this.lexer; var stream = lexer.stream; // parse dictionary - var dict = new Dict(); + var dict = new Dict(null); while (!isCmd(this.buf1, 'ID') && !isEOF(this.buf1)) { - if (!isName(this.buf1)) + if (!isName(this.buf1)) { error('Dictionary key must be a name object'); + } var key = this.buf1.name; this.shift(); - if (isEOF(this.buf1)) + if (isEOF(this.buf1)) { break; + } dict.set(key, this.getObj(cipherTransform)); } @@ -31849,41 +30105,80 @@ var Parser = (function ParserClosure() { // searching for the /EI\s/ var state = 0, ch, i, ii; - while (state != 4 && (ch = stream.getByte()) !== -1) { - switch (ch | 0) { - case 0x20: - case 0x0D: - case 0x0A: - // let's check next five bytes to be ASCII... just be sure - var followingBytes = stream.peekBytes(5); - for (i = 0, ii = followingBytes.length; i < ii; i++) { + var E = 0x45, I = 0x49, SPACE = 0x20, NL = 0xA, CR = 0xD; + while ((ch = stream.getByte()) !== -1) { + if (state === 0) { + state = (ch === E) ? 1 : 0; + } else if (state === 1) { + state = (ch === I) ? 2 : 0; + } else { + assert(state === 2); + if (ch === SPACE || ch === NL || ch === CR) { + // Let's check the next five bytes are ASCII... just be sure. + var n = 5; + var followingBytes = stream.peekBytes(n); + for (i = 0; i < n; i++) { ch = followingBytes[i]; - if (ch !== 0x0A && ch !== 0x0D && (ch < 0x20 || ch > 0x7F)) { - // not a LF, CR, SPACE or any visible ASCII character + if (ch !== NL && ch !== CR && (ch < SPACE || ch > 0x7F)) { + // Not a LF, CR, SPACE or any visible ASCII character, i.e. + // it's binary stuff. Resetting the state. state = 0; - break; // some binary stuff found, resetting the state + break; } } - state = state === 3 ? 4 : 0; - break; - case 0x45: - state = 2; - break; - case 0x49: - state = state === 2 ? 3 : 0; - break; - default: + if (state === 2) { + break; // finished! + } + } else { state = 0; - break; + } } } var length = (stream.pos - 4) - startPos; var imageStream = stream.makeSubStream(startPos, length, dict); - if (cipherTransform) - imageStream = cipherTransform.createStream(imageStream); + + // trying to cache repeat images, first we are trying to "warm up" caching + // using length, then comparing adler32 + var MAX_LENGTH_TO_CACHE = 1000; + var cacheImage = false, adler32; + if (length < MAX_LENGTH_TO_CACHE && this.imageCache.length === length) { + var imageBytes = imageStream.getBytes(); + imageStream.reset(); + + var a = 1; + var b = 0; + for (i = 0, ii = imageBytes.length; i < ii; ++i) { + a = (a + (imageBytes[i] & 0xff)) % 65521; + b = (b + a) % 65521; + } + adler32 = (b << 16) | a; + + if (this.imageCache.stream && this.imageCache.adler32 === adler32) { + this.buf2 = Cmd.get('EI'); + this.shift(); + + this.imageCache.stream.reset(); + return this.imageCache.stream; + } + cacheImage = true; + } + if (!cacheImage && !this.imageCache.stream) { + this.imageCache.length = length; + this.imageCache.stream = null; + } + + if (cipherTransform) { + imageStream = cipherTransform.createStream(imageStream, length); + } + imageStream = this.filter(imageStream, dict, length); imageStream.dict = dict; + if (cacheImage) { + imageStream.cacheKey = 'inline_' + length + '_' + adler32; + this.imageCache.adler32 = adler32; + this.imageCache.stream = imageStream; + } this.buf2 = Cmd.get('EI'); this.shift(); @@ -31892,7 +30187,7 @@ var Parser = (function ParserClosure() { }, fetchIfRef: function Parser_fetchIfRef(obj) { // not relying on the xref.fetchIfRef -- xref might not be set - return isRef(obj) ? this.xref.fetch(obj) : obj; + return (isRef(obj) ? this.xref.fetch(obj) : obj); }, makeStream: function Parser_makeStream(dict, cipherTransform) { var lexer = this.lexer; @@ -31922,11 +30217,14 @@ var Parser = (function ParserClosure() { var ENDSTREAM_SIGNATURE_LENGTH = 9; var ENDSTREAM_SIGNATURE = [0x65, 0x6E, 0x64, 0x73, 0x74, 0x72, 0x65, 0x61, 0x6D]; - var skipped = 0, found = false; + var skipped = 0, found = false, i, j; while (stream.pos < stream.end) { var scanBytes = stream.peekBytes(SCAN_BLOCK_SIZE); var scanLength = scanBytes.length - ENDSTREAM_SIGNATURE_LENGTH; - var found = false, i, ii, j; + if (scanLength <= 0) { + break; + } + found = false; for (i = 0, j = 0; i < scanLength; i++) { var b = scanBytes[i]; if (b !== ENDSTREAM_SIGNATURE[j]) { @@ -31935,6 +30233,7 @@ var Parser = (function ParserClosure() { } else { j++; if (j >= ENDSTREAM_SIGNATURE_LENGTH) { + i++; found = true; break; } @@ -31960,8 +30259,9 @@ var Parser = (function ParserClosure() { this.shift(); // 'endstream' stream = stream.makeSubStream(pos, length, dict); - if (cipherTransform) - stream = cipherTransform.createStream(stream); + if (cipherTransform) { + stream = cipherTransform.createStream(stream, length); + } stream = this.filter(stream, dict, length); stream.dict = dict; return stream; @@ -31969,72 +30269,114 @@ var Parser = (function ParserClosure() { filter: function Parser_filter(stream, dict, length) { var filter = this.fetchIfRef(dict.get('Filter', 'F')); var params = this.fetchIfRef(dict.get('DecodeParms', 'DP')); - if (isName(filter)) + if (isName(filter)) { return this.makeFilter(stream, filter.name, length, params); + } + + var maybeLength = length; if (isArray(filter)) { var filterArray = filter; var paramsArray = params; for (var i = 0, ii = filterArray.length; i < ii; ++i) { filter = filterArray[i]; - if (!isName(filter)) + if (!isName(filter)) { error('Bad filter name: ' + filter); + } params = null; - if (isArray(paramsArray) && (i in paramsArray)) + if (isArray(paramsArray) && (i in paramsArray)) { params = paramsArray[i]; - stream = this.makeFilter(stream, filter.name, length, params); + } + stream = this.makeFilter(stream, filter.name, maybeLength, params); // after the first stream the length variable is invalid - length = null; + maybeLength = null; } } return stream; }, - makeFilter: function Parser_makeFilter(stream, name, length, params) { + makeFilter: function Parser_makeFilter(stream, name, maybeLength, params) { if (stream.dict.get('Length') === 0) { return new NullStream(stream); } - if (name == 'FlateDecode' || name == 'Fl') { + try { if (params) { - return new PredictorStream(new FlateStream(stream), params); + params = this.fetchIfRef(params); } - return new FlateStream(stream); - } - if (name == 'LZWDecode' || name == 'LZW') { - var earlyChange = 1; - if (params) { - if (params.has('EarlyChange')) - earlyChange = params.get('EarlyChange'); - return new PredictorStream( - new LZWStream(stream, earlyChange), params); + var xrefStreamStats = this.xref.stats.streamTypes; + if (name === 'FlateDecode' || name === 'Fl') { + xrefStreamStats[StreamType.FLATE] = true; + if (params) { + return new PredictorStream(new FlateStream(stream, maybeLength), + maybeLength, params); + } + return new FlateStream(stream, maybeLength); } - return new LZWStream(stream, earlyChange); + if (name === 'LZWDecode' || name === 'LZW') { + xrefStreamStats[StreamType.LZW] = true; + var earlyChange = 1; + if (params) { + if (params.has('EarlyChange')) { + earlyChange = params.get('EarlyChange'); + } + return new PredictorStream( + new LZWStream(stream, maybeLength, earlyChange), + maybeLength, params); + } + return new LZWStream(stream, maybeLength, earlyChange); + } + if (name === 'DCTDecode' || name === 'DCT') { + // According to the specification: for inline images, the ID operator + // shall be followed by a single whitespace character (unless it uses + // ASCII85Decode or ASCIIHexDecode filters). + // In practice this only seems to be followed for inline JPEG images, + // and generally ignoring the first byte of the stream if it is a + // whitespace char can even *cause* issues (e.g. in the CCITTFaxDecode + // filters used in issue2984.pdf). + // Hence when the first byte of the stream of an inline JPEG image is + // a whitespace character, we thus simply skip over it. + if (isCmd(this.buf1, 'ID')) { + var firstByte = stream.peekByte(); + if (firstByte === 0x0A /* LF */ || firstByte === 0x0D /* CR */ || + firstByte === 0x20 /* SPACE */) { + stream.skip(); + } + } + xrefStreamStats[StreamType.DCT] = true; + return new JpegStream(stream, maybeLength, stream.dict, this.xref); + } + if (name === 'JPXDecode' || name === 'JPX') { + xrefStreamStats[StreamType.JPX] = true; + return new JpxStream(stream, maybeLength, stream.dict); + } + if (name === 'ASCII85Decode' || name === 'A85') { + xrefStreamStats[StreamType.A85] = true; + return new Ascii85Stream(stream, maybeLength); + } + if (name === 'ASCIIHexDecode' || name === 'AHx') { + xrefStreamStats[StreamType.AHX] = true; + return new AsciiHexStream(stream, maybeLength); + } + if (name === 'CCITTFaxDecode' || name === 'CCF') { + xrefStreamStats[StreamType.CCF] = true; + return new CCITTFaxStream(stream, maybeLength, params); + } + if (name === 'RunLengthDecode' || name === 'RL') { + xrefStreamStats[StreamType.RL] = true; + return new RunLengthStream(stream, maybeLength); + } + if (name === 'JBIG2Decode') { + xrefStreamStats[StreamType.JBIG] = true; + return new Jbig2Stream(stream, maybeLength, stream.dict); + } + warn('filter "' + name + '" not supported yet'); + return stream; + } catch (ex) { + if (ex instanceof MissingDataException) { + throw ex; + } + warn('Invalid stream: \"' + ex + '\"'); + return new NullStream(stream); } - if (name == 'DCTDecode' || name == 'DCT') { - var bytes = stream.getBytes(length); - return new JpegStream(bytes, stream.dict, this.xref); - } - if (name == 'JPXDecode' || name == 'JPX') { - var bytes = stream.getBytes(length); - return new JpxStream(bytes, stream.dict); - } - if (name == 'ASCII85Decode' || name == 'A85') { - return new Ascii85Stream(stream); - } - if (name == 'ASCIIHexDecode' || name == 'AHx') { - return new AsciiHexStream(stream); - } - if (name == 'CCITTFaxDecode' || name == 'CCF') { - return new CCITTFaxStream(stream, params); - } - if (name == 'RunLengthDecode' || name == 'RL') { - return new RunLengthStream(stream); - } - if (name == 'JBIG2Decode') { - var bytes = stream.getBytes(length); - return new Jbig2Stream(bytes, stream.dict); - } - warn('filter "' + name + '" not supported yet'); - return stream; } }; @@ -32046,6 +30388,13 @@ var Lexer = (function LexerClosure() { this.stream = stream; this.nextChar(); + // While lexing, we build up many strings one char at a time. Using += for + // this can result in lots of garbage strings. It's better to build an + // array of single-char strings and then join() them together at the end. + // And reusing a single array (i.e. |this.strBuf|) over and over for this + // purpose uses less memory than using a new array for each string. + this.strBuf = []; + // The PDFs might have "glued" commands with other commands, operands or // literals, e.g. "q1". The knownCommands is a dictionary of the valid // commands and their prefixes. The prefixes are built the following way: @@ -32057,29 +30406,29 @@ var Lexer = (function LexerClosure() { } Lexer.isSpace = function Lexer_isSpace(ch) { - // space is one of the following characters: SPACE, TAB, CR, or LF - return ch === 0x20 || ch === 0x09 || ch === 0x0D || ch === 0x0A; + // Space is one of the following characters: SPACE, TAB, CR or LF. + return (ch === 0x20 || ch === 0x09 || ch === 0x0D || ch === 0x0A); }; - // A '1' in this array means the character is white space. A '1' or + // A '1' in this array means the character is white space. A '1' or // '2' means the character ends a name or command. var specialChars = [ - 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, // 0x - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 1x - 1, 0, 0, 0, 0, 2, 0, 0, 2, 2, 0, 0, 0, 0, 0, 2, // 2x - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, // 3x - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 4x - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0, // 5x - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 6x - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0, // 7x - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 8x - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 9x - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // ax - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // bx - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // cx - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // dx - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // ex - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 // fx + 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, // 0x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 1x + 1, 0, 0, 0, 0, 2, 0, 0, 2, 2, 0, 0, 0, 0, 0, 2, // 2x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, // 3x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 4x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0, // 5x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 6x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0, // 7x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 8x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 9x + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // ax + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // bx + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // cx + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // dx + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // ex + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 // fx ]; function toHexDigit(ch) { @@ -32097,36 +30446,87 @@ var Lexer = (function LexerClosure() { nextChar: function Lexer_nextChar() { return (this.currentChar = this.stream.getByte()); }, + peekChar: function Lexer_peekChar() { + return this.stream.peekByte(); + }, getNumber: function Lexer_getNumber() { - var floating = false; var ch = this.currentChar; - var str = String.fromCharCode(ch); + var eNotation = false; + var divideBy = 0; // different from 0 if it's a floating point value + var sign = 1; + + if (ch === 0x2D) { // '-' + sign = -1; + ch = this.nextChar(); + } else if (ch === 0x2B) { // '+' + ch = this.nextChar(); + } + if (ch === 0x2E) { // '.' + divideBy = 10; + ch = this.nextChar(); + } + if (ch < 0x30 || ch > 0x39) { // '0' - '9' + error('Invalid number: ' + String.fromCharCode(ch)); + return 0; + } + + var baseValue = ch - 0x30; // '0' + var powerValue = 0; + var powerValueSign = 1; + while ((ch = this.nextChar()) >= 0) { - if (ch === 0x2E && !floating) { // '.' - str += '.'; - floating = true; + if (0x30 <= ch && ch <= 0x39) { // '0' - '9' + var currentDigit = ch - 0x30; // '0' + if (eNotation) { // We are after an 'e' or 'E' + powerValue = powerValue * 10 + currentDigit; + } else { + if (divideBy !== 0) { // We are after a point + divideBy *= 10; + } + baseValue = baseValue * 10 + currentDigit; + } + } else if (ch === 0x2E) { // '.' + if (divideBy === 0) { + divideBy = 1; + } else { + // A number can have only one '.' + break; + } } else if (ch === 0x2D) { // '-' // ignore minus signs in the middle of numbers to match // Adobe's behavior warn('Badly formated number'); - } else if (ch >= 0x30 && ch <= 0x39) { // '0'-'9' - str += String.fromCharCode(ch); } else if (ch === 0x45 || ch === 0x65) { // 'E', 'e' - floating = true; + // 'E' can be either a scientific notation or the beginning of a new + // operator + ch = this.peekChar(); + if (ch === 0x2B || ch === 0x2D) { // '+', '-' + powerValueSign = (ch === 0x2D) ? -1 : 1; + this.nextChar(); // Consume the sign character + } else if (ch < 0x30 || ch > 0x39) { // '0' - '9' + // The 'E' must be the beginning of a new operator + break; + } + eNotation = true; } else { // the last character doesn't belong to us break; } } - var value = parseFloat(str); - if (isNaN(value)) - error('Invalid floating point number: ' + value); - return value; + + if (divideBy !== 0) { + baseValue /= divideBy; + } + if (eNotation) { + baseValue *= Math.pow(10, powerValueSign * powerValue); + } + return sign * baseValue; }, getString: function Lexer_getString() { var numParen = 1; var done = false; - var str = ''; + var strBuf = this.strBuf; + strBuf.length = 0; var ch = this.nextChar(); while (true) { @@ -32138,14 +30538,14 @@ var Lexer = (function LexerClosure() { break; case 0x28: // '(' ++numParen; - str += '('; + strBuf.push('('); break; case 0x29: // ')' if (--numParen === 0) { this.nextChar(); // consume strings ')' done = true; } else { - str += ')'; + strBuf.push(')'); } break; case 0x5C: // '\\' @@ -32156,24 +30556,24 @@ var Lexer = (function LexerClosure() { done = true; break; case 0x6E: // 'n' - str += '\n'; + strBuf.push('\n'); break; case 0x72: // 'r' - str += '\r'; + strBuf.push('\r'); break; case 0x74: // 't' - str += '\t'; + strBuf.push('\t'); break; case 0x62: // 'b' - str += '\b'; + strBuf.push('\b'); break; case 0x66: // 'f' - str += '\f'; + strBuf.push('\f'); break; case 0x5C: // '\' case 0x28: // '(' case 0x29: // ')' - str += String.fromCharCode(ch); + strBuf.push(String.fromCharCode(ch)); break; case 0x30: case 0x31: case 0x32: case 0x33: // '0'-'3' case 0x34: case 0x35: case 0x36: case 0x37: // '4'-'7' @@ -32188,18 +30588,22 @@ var Lexer = (function LexerClosure() { x = (x << 3) + (ch & 0x0F); } } - - str += String.fromCharCode(x); + strBuf.push(String.fromCharCode(x)); break; - case 0x0A: case 0x0D: // LF, CR + case 0x0D: // CR + if (this.peekChar() === 0x0A) { // LF + this.nextChar(); + } + break; + case 0x0A: // LF break; default: - str += String.fromCharCode(ch); + strBuf.push(String.fromCharCode(ch)); break; } break; default: - str += String.fromCharCode(ch); + strBuf.push(String.fromCharCode(ch)); break; } if (done) { @@ -32209,35 +30613,38 @@ var Lexer = (function LexerClosure() { ch = this.nextChar(); } } - return str; + return strBuf.join(''); }, getName: function Lexer_getName() { - var str = '', ch; + var ch; + var strBuf = this.strBuf; + strBuf.length = 0; while ((ch = this.nextChar()) >= 0 && !specialChars[ch]) { if (ch === 0x23) { // '#' ch = this.nextChar(); var x = toHexDigit(ch); - if (x != -1) { + if (x !== -1) { var x2 = toHexDigit(this.nextChar()); - if (x2 == -1) + if (x2 === -1) { error('Illegal digit in hex char in name: ' + x2); - str += String.fromCharCode((x << 4) | x2); + } + strBuf.push(String.fromCharCode((x << 4) | x2)); } else { - str += '#'; - str += String.fromCharCode(ch); + strBuf.push('#', String.fromCharCode(ch)); } } else { - str += String.fromCharCode(ch); + strBuf.push(String.fromCharCode(ch)); } } - if (str.length > 128) { + if (strBuf.length > 128) { error('Warning: name token is longer than allowed by the spec: ' + - str.length); + strBuf.length); } - return new Name(str); + return Name.get(strBuf.join('')); }, getHexString: function Lexer_getHexString() { - var str = ''; + var strBuf = this.strBuf; + strBuf.length = 0; var ch = this.currentChar; var isFirstHex = true; var firstDigit; @@ -32267,13 +30674,13 @@ var Lexer = (function LexerClosure() { ch = this.nextChar(); continue; } - str += String.fromCharCode((firstDigit << 4) | secondDigit); + strBuf.push(String.fromCharCode((firstDigit << 4) | secondDigit)); } isFirstHex = !isFirstHex; ch = this.nextChar(); } } - return str; + return strBuf.join(''); }, getObj: function Lexer_getObj() { // skip whitespace and comments @@ -32284,8 +30691,9 @@ var Lexer = (function LexerClosure() { return EOF; } if (comment) { - if (ch === 0x0A || ch == 0x0D) // LF, CR + if (ch === 0x0A || ch === 0x0D) { // LF, CR comment = false; + } } else if (ch === 0x25) { // '%' comment = true; } else if (specialChars[ch] !== 1) { @@ -32342,29 +30750,32 @@ var Lexer = (function LexerClosure() { // command var str = String.fromCharCode(ch); var knownCommands = this.knownCommands; - var knownCommandFound = knownCommands && (str in knownCommands); + var knownCommandFound = knownCommands && knownCommands[str] !== undefined; while ((ch = this.nextChar()) >= 0 && !specialChars[ch]) { // stop if known command is found and next character does not make // the str a command var possibleCommand = str + String.fromCharCode(ch); - if (knownCommandFound && !(possibleCommand in knownCommands)) { + if (knownCommandFound && knownCommands[possibleCommand] === undefined) { break; } - if (str.length == 128) + if (str.length === 128) { error('Command token too long: ' + str.length); + } str = possibleCommand; - knownCommandFound = knownCommands && (str in knownCommands); + knownCommandFound = knownCommands && knownCommands[str] !== undefined; } - if (str == 'true') + if (str === 'true') { return true; - if (str == 'false') + } + if (str === 'false') { return false; - if (str == 'null') + } + if (str === 'null') { return null; + } return Cmd.get(str); }, skipToNextLine: function Lexer_skipToNextLine() { - var stream = this.stream; var ch = this.currentChar; while (ch >= 0) { if (ch === 0x0D) { // CR @@ -32385,87 +30796,264 @@ var Lexer = (function LexerClosure() { return Lexer; })(); -var Linearization = (function LinearizationClosure() { - function Linearization(stream) { - this.parser = new Parser(new Lexer(stream), false, null); - var obj1 = this.parser.getObj(); - var obj2 = this.parser.getObj(); - var obj3 = this.parser.getObj(); - this.linDict = this.parser.getObj(); - if (isInt(obj1) && isInt(obj2) && isCmd(obj3, 'obj') && - isDict(this.linDict)) { - var obj = this.linDict.get('Linearized'); - if (!(isNum(obj) && obj > 0)) - this.linDict = null; - } - } - - Linearization.prototype = { - getInt: function Linearization_getInt(name) { - var linDict = this.linDict; - var obj; - if (isDict(linDict) && - isInt(obj = linDict.get(name)) && - obj > 0) { +var Linearization = { + create: function LinearizationCreate(stream) { + function getInt(name, allowZeroValue) { + var obj = linDict.get(name); + if (isInt(obj) && (allowZeroValue ? obj >= 0 : obj > 0)) { return obj; } - error('"' + name + '" field in linearization table is invalid'); - }, - getHint: function Linearization_getHint(index) { - var linDict = this.linDict; - var obj1, obj2; - if (isDict(linDict) && - isArray(obj1 = linDict.get('H')) && - obj1.length >= 2 && - isInt(obj2 = obj1[index]) && - obj2 > 0) { - return obj2; + throw new Error('The "' + name + '" parameter in the linearization ' + + 'dictionary is invalid.'); + } + function getHints() { + var hints = linDict.get('H'), hintsLength, item; + if (isArray(hints) && + ((hintsLength = hints.length) === 2 || hintsLength === 4)) { + for (var index = 0; index < hintsLength; index++) { + if (!(isInt(item = hints[index]) && item > 0)) { + throw new Error('Hint (' + index + + ') in the linearization dictionary is invalid.'); + } + } + return hints; } - error('Hints table in linearization table is invalid: ' + index); + throw new Error('Hint array in the linearization dictionary is invalid.'); + } + var parser = new Parser(new Lexer(stream), false, null); + var obj1 = parser.getObj(); + var obj2 = parser.getObj(); + var obj3 = parser.getObj(); + var linDict = parser.getObj(); + var obj, length; + if (!(isInt(obj1) && isInt(obj2) && isCmd(obj3, 'obj') && isDict(linDict) && + isNum(obj = linDict.get('Linearized')) && obj > 0)) { + return null; // No valid linearization dictionary found. + } else if ((length = getInt('L')) !== stream.length) { + throw new Error('The "L" parameter in the linearization dictionary ' + + 'does not equal the stream length.'); + } + return { + length: length, + hints: getHints(), + objectNumberFirst: getInt('O'), + endFirst: getInt('E'), + numPages: getInt('N'), + mainXRefEntriesOffset: getInt('T'), + pageFirst: (linDict.has('P') ? getInt('P', true) : 0) + }; + } +}; + + +var PostScriptParser = (function PostScriptParserClosure() { + function PostScriptParser(lexer) { + this.lexer = lexer; + this.operators = []; + this.token = null; + this.prev = null; + } + PostScriptParser.prototype = { + nextToken: function PostScriptParser_nextToken() { + this.prev = this.token; + this.token = this.lexer.getToken(); }, - get length() { - if (!isDict(this.linDict)) - return 0; - return this.getInt('L'); + accept: function PostScriptParser_accept(type) { + if (this.token.type === type) { + this.nextToken(); + return true; + } + return false; }, - get hintsOffset() { - return this.getHint(0); + expect: function PostScriptParser_expect(type) { + if (this.accept(type)) { + return true; + } + error('Unexpected symbol: found ' + this.token.type + ' expected ' + + type + '.'); }, - get hintsLength() { - return this.getHint(1); + parse: function PostScriptParser_parse() { + this.nextToken(); + this.expect(PostScriptTokenTypes.LBRACE); + this.parseBlock(); + this.expect(PostScriptTokenTypes.RBRACE); + return this.operators; }, - get hintsOffset2() { - return this.getHint(2); + parseBlock: function PostScriptParser_parseBlock() { + while (true) { + if (this.accept(PostScriptTokenTypes.NUMBER)) { + this.operators.push(this.prev.value); + } else if (this.accept(PostScriptTokenTypes.OPERATOR)) { + this.operators.push(this.prev.value); + } else if (this.accept(PostScriptTokenTypes.LBRACE)) { + this.parseCondition(); + } else { + return; + } + } }, - get hintsLenth2() { - return this.getHint(3); - }, - get objectNumberFirst() { - return this.getInt('O'); - }, - get endFirst() { - return this.getInt('E'); - }, - get numPages() { - return this.getInt('N'); - }, - get mainXRefEntriesOffset() { - return this.getInt('T'); - }, - get pageFirst() { - return this.getInt('P'); + parseCondition: function PostScriptParser_parseCondition() { + // Add two place holders that will be updated later + var conditionLocation = this.operators.length; + this.operators.push(null, null); + + this.parseBlock(); + this.expect(PostScriptTokenTypes.RBRACE); + if (this.accept(PostScriptTokenTypes.IF)) { + // The true block is right after the 'if' so it just falls through on + // true else it jumps and skips the true block. + this.operators[conditionLocation] = this.operators.length; + this.operators[conditionLocation + 1] = 'jz'; + } else if (this.accept(PostScriptTokenTypes.LBRACE)) { + var jumpLocation = this.operators.length; + this.operators.push(null, null); + var endOfTrue = this.operators.length; + this.parseBlock(); + this.expect(PostScriptTokenTypes.RBRACE); + this.expect(PostScriptTokenTypes.IFELSE); + // The jump is added at the end of the true block to skip the false + // block. + this.operators[jumpLocation] = this.operators.length; + this.operators[jumpLocation + 1] = 'j'; + + this.operators[conditionLocation] = endOfTrue; + this.operators[conditionLocation + 1] = 'jz'; + } else { + error('PS Function: error parsing conditional.'); + } } }; - - return Linearization; + return PostScriptParser; })(); +var PostScriptTokenTypes = { + LBRACE: 0, + RBRACE: 1, + NUMBER: 2, + OPERATOR: 3, + IF: 4, + IFELSE: 5 +}; + +var PostScriptToken = (function PostScriptTokenClosure() { + function PostScriptToken(type, value) { + this.type = type; + this.value = value; + } + + var opCache = {}; + + PostScriptToken.getOperator = function PostScriptToken_getOperator(op) { + var opValue = opCache[op]; + if (opValue) { + return opValue; + } + return opCache[op] = new PostScriptToken(PostScriptTokenTypes.OPERATOR, op); + }; + + PostScriptToken.LBRACE = new PostScriptToken(PostScriptTokenTypes.LBRACE, + '{'); + PostScriptToken.RBRACE = new PostScriptToken(PostScriptTokenTypes.RBRACE, + '}'); + PostScriptToken.IF = new PostScriptToken(PostScriptTokenTypes.IF, 'IF'); + PostScriptToken.IFELSE = new PostScriptToken(PostScriptTokenTypes.IFELSE, + 'IFELSE'); + return PostScriptToken; +})(); + +var PostScriptLexer = (function PostScriptLexerClosure() { + function PostScriptLexer(stream) { + this.stream = stream; + this.nextChar(); + + this.strBuf = []; + } + PostScriptLexer.prototype = { + nextChar: function PostScriptLexer_nextChar() { + return (this.currentChar = this.stream.getByte()); + }, + getToken: function PostScriptLexer_getToken() { + var comment = false; + var ch = this.currentChar; + + // skip comments + while (true) { + if (ch < 0) { + return EOF; + } + + if (comment) { + if (ch === 0x0A || ch === 0x0D) { + comment = false; + } + } else if (ch === 0x25) { // '%' + comment = true; + } else if (!Lexer.isSpace(ch)) { + break; + } + ch = this.nextChar(); + } + switch (ch | 0) { + case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: // '0'-'4' + case 0x35: case 0x36: case 0x37: case 0x38: case 0x39: // '5'-'9' + case 0x2B: case 0x2D: case 0x2E: // '+', '-', '.' + return new PostScriptToken(PostScriptTokenTypes.NUMBER, + this.getNumber()); + case 0x7B: // '{' + this.nextChar(); + return PostScriptToken.LBRACE; + case 0x7D: // '}' + this.nextChar(); + return PostScriptToken.RBRACE; + } + // operator + var strBuf = this.strBuf; + strBuf.length = 0; + strBuf[0] = String.fromCharCode(ch); + + while ((ch = this.nextChar()) >= 0 && // and 'A'-'Z', 'a'-'z' + ((ch >= 0x41 && ch <= 0x5A) || (ch >= 0x61 && ch <= 0x7A))) { + strBuf.push(String.fromCharCode(ch)); + } + var str = strBuf.join(''); + switch (str.toLowerCase()) { + case 'if': + return PostScriptToken.IF; + case 'ifelse': + return PostScriptToken.IFELSE; + default: + return PostScriptToken.getOperator(str); + } + }, + getNumber: function PostScriptLexer_getNumber() { + var ch = this.currentChar; + var strBuf = this.strBuf; + strBuf.length = 0; + strBuf[0] = String.fromCharCode(ch); + + while ((ch = this.nextChar()) >= 0) { + if ((ch >= 0x30 && ch <= 0x39) || // '0'-'9' + ch === 0x2D || ch === 0x2E) { // '-', '.' + strBuf.push(String.fromCharCode(ch)); + } else { + break; + } + } + var value = parseFloat(strBuf.join('')); + if (isNaN(value)) { + error('Invalid floating point number: ' + value); + } + return value; + } + }; + return PostScriptLexer; +})(); var Stream = (function StreamClosure() { function Stream(arrayBuffer, start, length, dict) { - this.bytes = arrayBuffer instanceof Uint8Array ? arrayBuffer : - new Uint8Array(arrayBuffer); + this.bytes = (arrayBuffer instanceof Uint8Array ? + arrayBuffer : new Uint8Array(arrayBuffer)); this.start = start || 0; this.pos = this.start; this.end = (start + length) || this.bytes.length; @@ -32478,11 +31066,27 @@ var Stream = (function StreamClosure() { get length() { return this.end - this.start; }, + get isEmpty() { + return this.length === 0; + }, getByte: function Stream_getByte() { - if (this.pos >= this.end) + if (this.pos >= this.end) { return -1; + } return this.bytes[this.pos++]; }, + getUint16: function Stream_getUint16() { + var b0 = this.getByte(); + var b1 = this.getByte(); + return (b0 << 8) + b1; + }, + getInt32: function Stream_getInt32() { + var b0 = this.getByte(); + var b1 = this.getByte(); + var b2 = this.getByte(); + var b3 = this.getByte(); + return (b0 << 24) + (b1 << 16) + (b2 << 8) + b3; + }, // returns subarray of original buffer // should only be read getBytes: function Stream_getBytes(length) { @@ -32490,24 +31094,30 @@ var Stream = (function StreamClosure() { var pos = this.pos; var strEnd = this.end; - if (!length) + if (!length) { return bytes.subarray(pos, strEnd); - + } var end = pos + length; - if (end > strEnd) + if (end > strEnd) { end = strEnd; - + } this.pos = end; return bytes.subarray(pos, end); }, + peekByte: function Stream_peekByte() { + var peekedByte = this.getByte(); + this.pos--; + return peekedByte; + }, peekBytes: function Stream_peekBytes(length) { var bytes = this.getBytes(length); this.pos -= bytes.length; return bytes; }, skip: function Stream_skip(n) { - if (!n) + if (!n) { n = 1; + } this.pos += n; }, reset: function Stream_reset() { @@ -32529,8 +31139,9 @@ var StringStream = (function StringStreamClosure() { function StringStream(str) { var length = str.length; var bytes = new Uint8Array(length); - for (var n = 0; n < length; ++n) + for (var n = 0; n < length; ++n) { bytes[n] = str.charCodeAt(n); + } Stream.call(this, bytes); } @@ -32541,36 +31152,68 @@ var StringStream = (function StringStreamClosure() { // super class for the decoding streams var DecodeStream = (function DecodeStreamClosure() { - function DecodeStream() { + // Lots of DecodeStreams are created whose buffers are never used. For these + // we share a single empty buffer. This is (a) space-efficient and (b) avoids + // having special cases that would be required if we used |null| for an empty + // buffer. + var emptyBuffer = new Uint8Array(0); + + function DecodeStream(maybeMinBufferLength) { this.pos = 0; this.bufferLength = 0; this.eof = false; - this.buffer = null; + this.buffer = emptyBuffer; + this.minBufferLength = 512; + if (maybeMinBufferLength) { + // Compute the first power of two that is as big as maybeMinBufferLength. + while (this.minBufferLength < maybeMinBufferLength) { + this.minBufferLength *= 2; + } + } } DecodeStream.prototype = { + get isEmpty() { + while (!this.eof && this.bufferLength === 0) { + this.readBlock(); + } + return this.bufferLength === 0; + }, ensureBuffer: function DecodeStream_ensureBuffer(requested) { var buffer = this.buffer; - var current = buffer ? buffer.byteLength : 0; - if (requested < current) + if (requested <= buffer.byteLength) { return buffer; - var size = 512; - while (size < requested) - size <<= 1; + } + var size = this.minBufferLength; + while (size < requested) { + size *= 2; + } var buffer2 = new Uint8Array(size); - for (var i = 0; i < current; ++i) - buffer2[i] = buffer[i]; + buffer2.set(buffer); return (this.buffer = buffer2); }, getByte: function DecodeStream_getByte() { var pos = this.pos; while (this.bufferLength <= pos) { - if (this.eof) + if (this.eof) { return -1; + } this.readBlock(); } return this.buffer[this.pos++]; }, + getUint16: function DecodeStream_getUint16() { + var b0 = this.getByte(); + var b1 = this.getByte(); + return (b0 << 8) + b1; + }, + getInt32: function DecodeStream_getInt32() { + var b0 = this.getByte(); + var b1 = this.getByte(); + var b2 = this.getByte(); + var b3 = this.getByte(); + return (b0 << 24) + (b1 << 16) + (b2 << 8) + b3; + }, getBytes: function DecodeStream_getBytes(length) { var end, pos = this.pos; @@ -32578,27 +31221,28 @@ var DecodeStream = (function DecodeStreamClosure() { this.ensureBuffer(pos + length); end = pos + length; - while (!this.eof && this.bufferLength < end) + while (!this.eof && this.bufferLength < end) { this.readBlock(); - + } var bufEnd = this.bufferLength; - if (end > bufEnd) + if (end > bufEnd) { end = bufEnd; + } } else { - while (!this.eof) + while (!this.eof) { this.readBlock(); - + } end = this.bufferLength; - - // checking if bufferLength is still 0 then - // the buffer has to be initialized - if (!end) - this.buffer = new Uint8Array(0); } this.pos = end; return this.buffer.subarray(pos, end); }, + peekByte: function DecodeStream_peekByte() { + var peekedByte = this.getByte(); + this.pos--; + return peekedByte; + }, peekBytes: function DecodeStream_peekBytes(length) { var bytes = this.getBytes(length); this.pos -= bytes.length; @@ -32606,13 +31250,15 @@ var DecodeStream = (function DecodeStreamClosure() { }, makeSubStream: function DecodeStream_makeSubStream(start, length, dict) { var end = start + length; - while (this.bufferLength <= end && !this.eof) + while (this.bufferLength <= end && !this.eof) { this.readBlock(); + } return new Stream(this.buffer, start, length, dict); }, - skip: function Stream_skip(n) { - if (!n) + skip: function DecodeStream_skip(n) { + if (!n) { n = 1; + } this.pos += n; }, reset: function DecodeStream_reset() { @@ -32629,55 +31275,16 @@ var DecodeStream = (function DecodeStreamClosure() { return DecodeStream; })(); -var FakeStream = (function FakeStreamClosure() { - function FakeStream(stream) { - this.dict = stream.dict; - DecodeStream.call(this); - } - - FakeStream.prototype = Object.create(DecodeStream.prototype); - FakeStream.prototype.readBlock = function FakeStream_readBlock() { - var bufferLength = this.bufferLength; - bufferLength += 1024; - var buffer = this.ensureBuffer(bufferLength); - this.bufferLength = bufferLength; - }; - - FakeStream.prototype.getBytes = function FakeStream_getBytes(length) { - var end, pos = this.pos; - - if (length) { - this.ensureBuffer(pos + length); - end = pos + length; - - while (!this.eof && this.bufferLength < end) - this.readBlock(); - - var bufEnd = this.bufferLength; - if (end > bufEnd) - end = bufEnd; - } else { - this.eof = true; - end = this.bufferLength; - } - - this.pos = end; - return this.buffer.subarray(pos, end); - }; - - return FakeStream; -})(); - var StreamsSequenceStream = (function StreamsSequenceStreamClosure() { function StreamsSequenceStream(streams) { this.streams = streams; - DecodeStream.call(this); + DecodeStream.call(this, /* maybeLength = */ null); } StreamsSequenceStream.prototype = Object.create(DecodeStream.prototype); StreamsSequenceStream.prototype.readBlock = - function streamSequenceStreamReadBlock() { + function streamSequenceStreamReadBlock() { var streams = this.streams; if (streams.length === 0) { @@ -32700,7 +31307,7 @@ var StreamsSequenceStream = (function StreamsSequenceStreamClosure() { for (var i = 0, ii = this.streams.length; i < ii; i++) { var stream = this.streams[i]; if (stream.getBaseStreams) { - Util.concatenateToArray(baseStreams, stream.getBaseStreams()); + Util.appendToArray(baseStreams, stream.getBaseStreams()); } } return baseStreams; @@ -32802,88 +31409,92 @@ var FlateStream = (function FlateStreamClosure() { 0x50003, 0x50013, 0x5000b, 0x5001b, 0x50007, 0x50017, 0x5000f, 0x00000 ]), 5]; - function FlateStream(stream) { - var bytes = stream.getBytes(); - var bytesPos = 0; + function FlateStream(str, maybeLength) { + this.str = str; + this.dict = str.dict; - this.dict = stream.dict; - var cmf = bytes[bytesPos++]; - var flg = bytes[bytesPos++]; - if (cmf == -1 || flg == -1) + var cmf = str.getByte(); + var flg = str.getByte(); + if (cmf === -1 || flg === -1) { error('Invalid header in flate stream: ' + cmf + ', ' + flg); - if ((cmf & 0x0f) != 0x08) + } + if ((cmf & 0x0f) !== 0x08) { error('Unknown compression method in flate stream: ' + cmf + ', ' + flg); - if ((((cmf << 8) + flg) % 31) !== 0) + } + if ((((cmf << 8) + flg) % 31) !== 0) { error('Bad FCHECK in flate stream: ' + cmf + ', ' + flg); - if (flg & 0x20) + } + if (flg & 0x20) { error('FDICT bit set in flate stream: ' + cmf + ', ' + flg); - - this.bytes = bytes; - this.bytesPos = bytesPos; + } this.codeSize = 0; this.codeBuf = 0; - DecodeStream.call(this); + DecodeStream.call(this, maybeLength); } FlateStream.prototype = Object.create(DecodeStream.prototype); FlateStream.prototype.getBits = function FlateStream_getBits(bits) { + var str = this.str; var codeSize = this.codeSize; var codeBuf = this.codeBuf; - var bytes = this.bytes; - var bytesPos = this.bytesPos; var b; while (codeSize < bits) { - if (typeof (b = bytes[bytesPos++]) == 'undefined') + if ((b = str.getByte()) === -1) { error('Bad encoding in flate stream'); + } codeBuf |= b << codeSize; codeSize += 8; } b = codeBuf & ((1 << bits) - 1); this.codeBuf = codeBuf >> bits; this.codeSize = codeSize -= bits; - this.bytesPos = bytesPos; + return b; }; FlateStream.prototype.getCode = function FlateStream_getCode(table) { + var str = this.str; var codes = table[0]; var maxLen = table[1]; var codeSize = this.codeSize; var codeBuf = this.codeBuf; - var bytes = this.bytes; - var bytesPos = this.bytesPos; + var b; while (codeSize < maxLen) { - var b; - if (typeof (b = bytes[bytesPos++]) == 'undefined') - error('Bad encoding in flate stream'); + if ((b = str.getByte()) === -1) { + // premature end of stream. code might however still be valid. + // codeSize < codeLen check below guards against incomplete codeVal. + break; + } codeBuf |= (b << codeSize); codeSize += 8; } var code = codes[codeBuf & ((1 << maxLen) - 1)]; var codeLen = code >> 16; var codeVal = code & 0xffff; - if (codeSize === 0 || codeSize < codeLen || codeLen === 0) + if (codeLen < 1 || codeSize < codeLen) { error('Bad encoding in flate stream'); + } this.codeBuf = (codeBuf >> codeLen); this.codeSize = (codeSize - codeLen); - this.bytesPos = bytesPos; return codeVal; }; FlateStream.prototype.generateHuffmanTable = - function flateStreamGenerateHuffmanTable(lengths) { + function flateStreamGenerateHuffmanTable(lengths) { var n = lengths.length; // find max code length var maxLen = 0; - for (var i = 0; i < n; ++i) { - if (lengths[i] > maxLen) + var i; + for (i = 0; i < n; ++i) { + if (lengths[i] > maxLen) { maxLen = lengths[i]; + } } // build the table @@ -32893,19 +31504,19 @@ var FlateStream = (function FlateStreamClosure() { len <= maxLen; ++len, code <<= 1, skip <<= 1) { for (var val = 0; val < n; ++val) { - if (lengths[val] == len) { + if (lengths[val] === len) { // bit-reverse the code var code2 = 0; var t = code; - for (var i = 0; i < len; ++i) { + for (i = 0; i < len; ++i) { code2 = (code2 << 1) | (t & 1); t >>= 1; } // fill the table entries - for (var i = code2; i < size; i += skip) + for (i = code2; i < size; i += skip) { codes[i] = (len << 16) | val; - + } ++code; } } @@ -32915,30 +31526,35 @@ var FlateStream = (function FlateStreamClosure() { }; FlateStream.prototype.readBlock = function FlateStream_readBlock() { + var buffer, len; + var str = this.str; // read block header var hdr = this.getBits(3); - if (hdr & 1) + if (hdr & 1) { this.eof = true; + } hdr >>= 1; if (hdr === 0) { // uncompressed block - var bytes = this.bytes; - var bytesPos = this.bytesPos; var b; - if (typeof (b = bytes[bytesPos++]) == 'undefined') + if ((b = str.getByte()) === -1) { error('Bad block header in flate stream'); + } var blockLen = b; - if (typeof (b = bytes[bytesPos++]) == 'undefined') + if ((b = str.getByte()) === -1) { error('Bad block header in flate stream'); + } blockLen |= (b << 8); - if (typeof (b = bytes[bytesPos++]) == 'undefined') + if ((b = str.getByte()) === -1) { error('Bad block header in flate stream'); + } var check = b; - if (typeof (b = bytes[bytesPos++]) == 'undefined') + if ((b = str.getByte()) === -1) { error('Bad block header in flate stream'); + } check |= (b << 8); - if (check != (~blockLen & 0xffff) && + if (check !== (~blockLen & 0xffff) && (blockLen !== 0 || check !== 0)) { // Ignoring error for bad "empty" block (see issue 1277) error('Bad uncompressed block length in flate stream'); @@ -32948,32 +31564,31 @@ var FlateStream = (function FlateStreamClosure() { this.codeSize = 0; var bufferLength = this.bufferLength; - var buffer = this.ensureBuffer(bufferLength + blockLen); + buffer = this.ensureBuffer(bufferLength + blockLen); var end = bufferLength + blockLen; this.bufferLength = end; if (blockLen === 0) { - if (typeof bytes[bytesPos] == 'undefined') { + if (str.peekByte() === -1) { this.eof = true; } } else { for (var n = bufferLength; n < end; ++n) { - if (typeof (b = bytes[bytesPos++]) == 'undefined') { + if ((b = str.getByte()) === -1) { this.eof = true; break; } buffer[n] = b; } } - this.bytesPos = bytesPos; return; } var litCodeTable; var distCodeTable; - if (hdr == 1) { // compressed block, fixed codes + if (hdr === 1) { // compressed block, fixed codes litCodeTable = fixedLitCodeTab; distCodeTable = fixedDistCodeTab; - } else if (hdr == 2) { // compressed block, dynamic codes + } else if (hdr === 2) { // compressed block, dynamic codes var numLitCodes = this.getBits(5) + 257; var numDistCodes = this.getBits(5) + 1; var numCodeLenCodes = this.getBits(4) + 4; @@ -32981,31 +31596,35 @@ var FlateStream = (function FlateStreamClosure() { // build the code lengths code table var codeLenCodeLengths = new Uint8Array(codeLenCodeMap.length); - for (var i = 0; i < numCodeLenCodes; ++i) + var i; + for (i = 0; i < numCodeLenCodes; ++i) { codeLenCodeLengths[codeLenCodeMap[i]] = this.getBits(3); + } var codeLenCodeTab = this.generateHuffmanTable(codeLenCodeLengths); // build the literal and distance code tables - var len = 0; - var i = 0; + len = 0; + i = 0; var codes = numLitCodes + numDistCodes; var codeLengths = new Uint8Array(codes); + var bitsLength, bitsOffset, what; while (i < codes) { var code = this.getCode(codeLenCodeTab); - if (code == 16) { - var bitsLength = 2, bitsOffset = 3, what = len; - } else if (code == 17) { - var bitsLength = 3, bitsOffset = 3, what = (len = 0); - } else if (code == 18) { - var bitsLength = 7, bitsOffset = 11, what = (len = 0); + if (code === 16) { + bitsLength = 2; bitsOffset = 3; what = len; + } else if (code === 17) { + bitsLength = 3; bitsOffset = 3; what = (len = 0); + } else if (code === 18) { + bitsLength = 7; bitsOffset = 11; what = (len = 0); } else { codeLengths[i++] = len = code; continue; } var repeatLength = this.getBits(bitsLength) + bitsOffset; - while (repeatLength-- > 0) + while (repeatLength-- > 0) { codeLengths[i++] = what; + } } litCodeTable = @@ -33016,7 +31635,7 @@ var FlateStream = (function FlateStreamClosure() { error('Unknown block type in flate stream'); } - var buffer = this.buffer; + buffer = this.buffer; var limit = buffer ? buffer.length : 0; var pos = this.bufferLength; while (true) { @@ -33029,28 +31648,31 @@ var FlateStream = (function FlateStreamClosure() { buffer[pos++] = code1; continue; } - if (code1 == 256) { + if (code1 === 256) { this.bufferLength = pos; return; } code1 -= 257; code1 = lengthDecode[code1]; var code2 = code1 >> 16; - if (code2 > 0) + if (code2 > 0) { code2 = this.getBits(code2); - var len = (code1 & 0xffff) + code2; + } + len = (code1 & 0xffff) + code2; code1 = this.getCode(distCodeTable); code1 = distDecode[code1]; code2 = code1 >> 16; - if (code2 > 0) + if (code2 > 0) { code2 = this.getBits(code2); + } var dist = (code1 & 0xffff) + code2; if (pos + len >= limit) { buffer = this.ensureBuffer(pos + len); limit = buffer.length; } - for (var k = 0; k < len; ++k, ++pos) + for (var k = 0; k < len; ++k, ++pos) { buffer[pos] = buffer[pos - dist]; + } } }; @@ -33058,18 +31680,21 @@ var FlateStream = (function FlateStreamClosure() { })(); var PredictorStream = (function PredictorStreamClosure() { - function PredictorStream(str, params) { + function PredictorStream(str, maybeLength, params) { var predictor = this.predictor = params.get('Predictor') || 1; - if (predictor <= 1) + if (predictor <= 1) { return str; // no prediction - if (predictor !== 2 && (predictor < 10 || predictor > 15)) + } + if (predictor !== 2 && (predictor < 10 || predictor > 15)) { error('Unsupported predictor: ' + predictor); + } - if (predictor === 2) + if (predictor === 2) { this.readBlock = this.readBlockTiff; - else + } else { this.readBlock = this.readBlockPng; + } this.str = str; this.dict = str.dict; @@ -33081,14 +31706,14 @@ var PredictorStream = (function PredictorStreamClosure() { this.pixBytes = (colors * bits + 7) >> 3; this.rowBytes = (columns * colors * bits + 7) >> 3; - DecodeStream.call(this); + DecodeStream.call(this, maybeLength); return this; } PredictorStream.prototype = Object.create(DecodeStream.prototype); PredictorStream.prototype.readBlockTiff = - function predictorStreamReadBlockTiff() { + function predictorStreamReadBlockTiff() { var rowBytes = this.rowBytes; var bufferLength = this.bufferLength; @@ -33106,9 +31731,10 @@ var PredictorStream = (function PredictorStreamClosure() { var inbuf = 0, outbuf = 0; var inbits = 0, outbits = 0; var pos = bufferLength; + var i; if (bits === 1) { - for (var i = 0; i < rowBytes; ++i) { + for (i = 0; i < rowBytes; ++i) { var c = rawBytes[i]; inbuf = (inbuf << 8) | c; // bitwise addition is exclusive or @@ -33118,8 +31744,9 @@ var PredictorStream = (function PredictorStreamClosure() { inbuf &= 0xFFFF; } } else if (bits === 8) { - for (var i = 0; i < colors; ++i) + for (i = 0; i < colors; ++i) { buffer[pos++] = rawBytes[i]; + } for (; i < rowBytes; ++i) { buffer[pos] = buffer[pos - colors] + rawBytes[i]; pos++; @@ -33129,7 +31756,7 @@ var PredictorStream = (function PredictorStreamClosure() { var bitMask = (1 << bits) - 1; var j = 0, k = bufferLength; var columns = this.columns; - for (var i = 0; i < columns; ++i) { + for (i = 0; i < columns; ++i) { for (var kk = 0; kk < colors; ++kk) { if (inbits < bits) { inbuf = (inbuf << 8) | (rawBytes[j++] & 0xFF); @@ -33148,14 +31775,14 @@ var PredictorStream = (function PredictorStreamClosure() { } if (outbits > 0) { buffer[k++] = (outbuf << (8 - outbits)) + - (inbuf & ((1 << (8 - outbits)) - 1)); + (inbuf & ((1 << (8 - outbits)) - 1)); } } this.bufferLength += rowBytes; }; PredictorStream.prototype.readBlockPng = - function predictorStreamReadBlockPng() { + function predictorStreamReadBlockPng() { var rowBytes = this.rowBytes; var pixBytes = this.pixBytes; @@ -33171,30 +31798,35 @@ var PredictorStream = (function PredictorStreamClosure() { var buffer = this.ensureBuffer(bufferLength + rowBytes); var prevRow = buffer.subarray(bufferLength - rowBytes, bufferLength); - if (prevRow.length === 0) + if (prevRow.length === 0) { prevRow = new Uint8Array(rowBytes); + } - var j = bufferLength; + var i, j = bufferLength, up, c; switch (predictor) { case 0: - for (var i = 0; i < rowBytes; ++i) + for (i = 0; i < rowBytes; ++i) { buffer[j++] = rawBytes[i]; + } break; case 1: - for (var i = 0; i < pixBytes; ++i) + for (i = 0; i < pixBytes; ++i) { buffer[j++] = rawBytes[i]; + } for (; i < rowBytes; ++i) { buffer[j] = (buffer[j - pixBytes] + rawBytes[i]) & 0xFF; j++; } break; case 2: - for (var i = 0; i < rowBytes; ++i) + for (i = 0; i < rowBytes; ++i) { buffer[j++] = (prevRow[i] + rawBytes[i]) & 0xFF; + } break; case 3: - for (var i = 0; i < pixBytes; ++i) + for (i = 0; i < pixBytes; ++i) { buffer[j++] = (prevRow[i] >> 1) + rawBytes[i]; + } for (; i < rowBytes; ++i) { buffer[j] = (((prevRow[i] + buffer[j - pixBytes]) >> 1) + rawBytes[i]) & 0xFF; @@ -33204,34 +31836,38 @@ var PredictorStream = (function PredictorStreamClosure() { case 4: // we need to save the up left pixels values. the simplest way // is to create a new buffer - for (var i = 0; i < pixBytes; ++i) { - var up = prevRow[i]; - var c = rawBytes[i]; + for (i = 0; i < pixBytes; ++i) { + up = prevRow[i]; + c = rawBytes[i]; buffer[j++] = up + c; } for (; i < rowBytes; ++i) { - var up = prevRow[i]; + up = prevRow[i]; var upLeft = prevRow[i - pixBytes]; var left = buffer[j - pixBytes]; var p = left + up - upLeft; var pa = p - left; - if (pa < 0) + if (pa < 0) { pa = -pa; + } var pb = p - up; - if (pb < 0) + if (pb < 0) { pb = -pb; + } var pc = p - upLeft; - if (pc < 0) + if (pc < 0) { pc = -pc; + } - var c = rawBytes[i]; - if (pa <= pb && pa <= pc) + c = rawBytes[i]; + if (pa <= pb && pa <= pc) { buffer[j++] = left + c; - else if (pb <= pc) + } else if (pb <= pc) { buffer[j++] = up + c; - else + } else { buffer[j++] = upLeft + c; + } } break; default: @@ -33251,28 +31887,56 @@ var PredictorStream = (function PredictorStreamClosure() { * DecodeStreams. */ var JpegStream = (function JpegStreamClosure() { - function JpegStream(bytes, dict, xref) { + function JpegStream(stream, maybeLength, dict, xref) { // TODO: per poppler, some images may have 'junk' before that // need to be removed + this.stream = stream; + this.maybeLength = maybeLength; this.dict = dict; - this.bytes = bytes; - DecodeStream.call(this); + DecodeStream.call(this, maybeLength); } JpegStream.prototype = Object.create(DecodeStream.prototype); + Object.defineProperty(JpegStream.prototype, 'bytes', { + get: function JpegStream_bytes() { + // If this.maybeLength is null, we'll get the entire stream. + return shadow(this, 'bytes', this.stream.getBytes(this.maybeLength)); + }, + configurable: true + }); + JpegStream.prototype.ensureBuffer = function JpegStream_ensureBuffer(req) { - if (this.bufferLength) + if (this.bufferLength) { return; + } try { var jpegImage = new JpegImage(); - if (this.colorTransform != -1) - jpegImage.colorTransform = this.colorTransform; + + // checking if values needs to be transformed before conversion + if (this.forceRGB && this.dict && isArray(this.dict.get('Decode'))) { + var decodeArr = this.dict.get('Decode'); + var bitsPerComponent = this.dict.get('BitsPerComponent') || 8; + var decodeArrLength = decodeArr.length; + var transform = new Int32Array(decodeArrLength); + var transformNeeded = false; + var maxValue = (1 << bitsPerComponent) - 1; + for (var i = 0; i < decodeArrLength; i += 2) { + transform[i] = ((decodeArr[i + 1] - decodeArr[i]) * 256) | 0; + transform[i + 1] = (decodeArr[i] * maxValue) | 0; + if (transform[i] !== 256 || transform[i + 1] !== 0) { + transformNeeded = true; + } + } + if (transformNeeded) { + jpegImage.decodeTransform = transform; + } + } + jpegImage.parse(this.bytes); - var width = jpegImage.width; - var height = jpegImage.height; - var data = jpegImage.getData(width, height); + var data = jpegImage.getData(this.drawWidth, this.drawHeight, + this.forceRGB); this.buffer = data; this.bufferLength = data.length; this.eof = true; @@ -33280,6 +31944,12 @@ var JpegStream = (function JpegStreamClosure() { error('JPEG error: ' + e); } }; + + JpegStream.prototype.getBytes = function JpegStream_getBytes(length) { + this.ensureBuffer(); + return this.buffer; + }; + JpegStream.prototype.getIR = function JpegStream_getIR() { return PDFJS.createObjectURL(this.bytes, 'image/jpeg'); }; @@ -33288,7 +31958,7 @@ var JpegStream = (function JpegStreamClosure() { * further processing such as color space conversions. */ JpegStream.prototype.isNativelySupported = - function JpegStream_isNativelySupported(xref, res) { + function JpegStream_isNativelySupported(xref, res) { var cs = ColorSpace.parse(this.dict.get('ColorSpace', 'CS'), xref, res); return cs.name === 'DeviceGray' || cs.name === 'DeviceRGB'; }; @@ -33296,10 +31966,10 @@ var JpegStream = (function JpegStreamClosure() { * Checks if the image can be decoded by the browser. */ JpegStream.prototype.isNativelyDecodable = - function JpegStream_isNativelyDecodable(xref, res) { + function JpegStream_isNativelyDecodable(xref, res) { var cs = ColorSpace.parse(this.dict.get('ColorSpace', 'CS'), xref, res); var numComps = cs.numComps; - return numComps == 1 || numComps == 3; + return numComps === 1 || numComps === 3; }; return JpegStream; @@ -33310,18 +31980,28 @@ var JpegStream = (function JpegStreamClosure() { * the stream behaves like all the other DecodeStreams. */ var JpxStream = (function JpxStreamClosure() { - function JpxStream(bytes, dict) { + function JpxStream(stream, maybeLength, dict) { + this.stream = stream; + this.maybeLength = maybeLength; this.dict = dict; - this.bytes = bytes; - DecodeStream.call(this); + DecodeStream.call(this, maybeLength); } JpxStream.prototype = Object.create(DecodeStream.prototype); + Object.defineProperty(JpxStream.prototype, 'bytes', { + get: function JpxStream_bytes() { + // If this.maybeLength is null, we'll get the entire stream. + return shadow(this, 'bytes', this.stream.getBytes(this.maybeLength)); + }, + configurable: true + }); + JpxStream.prototype.ensureBuffer = function JpxStream_ensureBuffer(req) { - if (this.bufferLength) + if (this.bufferLength) { return; + } var jpxImage = new JpxImage(); jpxImage.parse(this.bytes); @@ -33329,75 +32009,35 @@ var JpxStream = (function JpxStreamClosure() { var width = jpxImage.width; var height = jpxImage.height; var componentsCount = jpxImage.componentsCount; - if (componentsCount != 1 && componentsCount != 3 && componentsCount != 4) - error('JPX with ' + componentsCount + ' components is not supported'); + var tileCount = jpxImage.tiles.length; + if (tileCount === 1) { + this.buffer = jpxImage.tiles[0].items; + } else { + var data = new Uint8Array(width * height * componentsCount); - var data = new Uint8Array(width * height * componentsCount); + for (var k = 0; k < tileCount; k++) { + var tileComponents = jpxImage.tiles[k]; + var tileWidth = tileComponents.width; + var tileHeight = tileComponents.height; + var tileLeft = tileComponents.left; + var tileTop = tileComponents.top; - for (var k = 0, kk = jpxImage.tiles.length; k < kk; k++) { - var tileCompoments = jpxImage.tiles[k]; - var tileWidth = tileCompoments[0].width; - var tileHeight = tileCompoments[0].height; - var tileLeft = tileCompoments[0].left; - var tileTop = tileCompoments[0].top; + var src = tileComponents.items; + var srcPosition = 0; + var dataPosition = (width * tileTop + tileLeft) * componentsCount; + var imgRowSize = width * componentsCount; + var tileRowSize = tileWidth * componentsCount; - var dataPosition, sourcePosition, data0, data1, data2, data3, rowFeed; - switch (componentsCount) { - case 1: - data0 = tileCompoments[0].items; - - dataPosition = width * tileTop + tileLeft; - rowFeed = width - tileWidth; - sourcePosition = 0; - for (var j = 0; j < tileHeight; j++) { - for (var i = 0; i < tileWidth; i++) - data[dataPosition++] = data0[sourcePosition++]; - dataPosition += rowFeed; - } - break; - case 3: - data0 = tileCompoments[0].items; - data1 = tileCompoments[1].items; - data2 = tileCompoments[2].items; - - dataPosition = (width * tileTop + tileLeft) * 3; - rowFeed = (width - tileWidth) * 3; - sourcePosition = 0; - for (var j = 0; j < tileHeight; j++) { - for (var i = 0; i < tileWidth; i++) { - data[dataPosition++] = data0[sourcePosition]; - data[dataPosition++] = data1[sourcePosition]; - data[dataPosition++] = data2[sourcePosition]; - sourcePosition++; - } - dataPosition += rowFeed; - } - break; - case 4: - data0 = tileCompoments[0].items; - data1 = tileCompoments[1].items; - data2 = tileCompoments[2].items; - data3 = tileCompoments[3].items; - - dataPosition = (width * tileTop + tileLeft) * 4; - rowFeed = (width - tileWidth) * 4; - sourcePosition = 0; - for (var j = 0; j < tileHeight; j++) { - for (var i = 0; i < tileWidth; i++) { - data[dataPosition++] = data0[sourcePosition]; - data[dataPosition++] = data1[sourcePosition]; - data[dataPosition++] = data2[sourcePosition]; - data[dataPosition++] = data3[sourcePosition]; - sourcePosition++; - } - dataPosition += rowFeed; - } - break; + for (var j = 0; j < tileHeight; j++) { + var rowBytes = src.subarray(srcPosition, srcPosition + tileRowSize); + data.set(rowBytes, dataPosition); + srcPosition += tileRowSize; + dataPosition += imgRowSize; + } } + this.buffer = data; } - - this.buffer = data; - this.bufferLength = data.length; + this.bufferLength = this.buffer.length; this.eof = true; }; @@ -33409,22 +32049,33 @@ var JpxStream = (function JpxStreamClosure() { * the stream behaves like all the other DecodeStreams. */ var Jbig2Stream = (function Jbig2StreamClosure() { - function Jbig2Stream(bytes, dict) { + function Jbig2Stream(stream, maybeLength, dict) { + this.stream = stream; + this.maybeLength = maybeLength; this.dict = dict; - this.bytes = bytes; - DecodeStream.call(this); + DecodeStream.call(this, maybeLength); } Jbig2Stream.prototype = Object.create(DecodeStream.prototype); + Object.defineProperty(Jbig2Stream.prototype, 'bytes', { + get: function Jbig2Stream_bytes() { + // If this.maybeLength is null, we'll get the entire stream. + return shadow(this, 'bytes', this.stream.getBytes(this.maybeLength)); + }, + configurable: true + }); + Jbig2Stream.prototype.ensureBuffer = function Jbig2Stream_ensureBuffer(req) { - if (this.bufferLength) + if (this.bufferLength) { return; + } var jbig2Image = new Jbig2Image(); - var chunks = [], decodeParams = this.dict.get('DecodeParms'); + var chunks = [], xref = this.dict.xref; + var decodeParams = xref.fetchIfRef(this.dict.get('DecodeParms')); // According to the PDF specification, DecodeParms can be either // a dictionary, or an array whose elements are dictionaries. @@ -33433,7 +32084,7 @@ var Jbig2Stream = (function Jbig2StreamClosure() { warn('JBIG2 - \'DecodeParms\' array with multiple elements ' + 'not supported.'); } - decodeParams = decodeParams[0]; + decodeParams = xref.fetchIfRef(decodeParams[0]); } if (decodeParams && decodeParams.has('JBIG2Globals')) { var globalsStream = decodeParams.get('JBIG2Globals'); @@ -33445,8 +32096,9 @@ var Jbig2Stream = (function Jbig2StreamClosure() { var dataLength = data.length; // JBIG2 had black as 1 and white as 0, inverting the colors - for (var i = 0; i < dataLength; i++) + for (var i = 0; i < dataLength; i++) { data[i] ^= 0xFF; + } this.buffer = data; this.bufferLength = dataLength; @@ -33457,14 +32109,14 @@ var Jbig2Stream = (function Jbig2StreamClosure() { })(); var DecryptStream = (function DecryptStreamClosure() { - function DecryptStream(str, decrypt) { + function DecryptStream(str, maybeLength, decrypt) { this.str = str; this.dict = str.dict; this.decrypt = decrypt; this.nextChunk = null; this.initialized = false; - DecodeStream.call(this); + DecodeStream.call(this, maybeLength); } var chunkSize = 512; @@ -33492,8 +32144,9 @@ var DecryptStream = (function DecryptStreamClosure() { var bufferLength = this.bufferLength; var i, n = chunk.length; var buffer = this.ensureBuffer(bufferLength + n); - for (i = 0; i < n; i++) + for (i = 0; i < n; i++) { buffer[bufferLength++] = chunk[i]; + } this.bufferLength = bufferLength; }; @@ -33501,12 +32154,17 @@ var DecryptStream = (function DecryptStreamClosure() { })(); var Ascii85Stream = (function Ascii85StreamClosure() { - function Ascii85Stream(str) { + function Ascii85Stream(str, maybeLength) { this.str = str; this.dict = str.dict; this.input = new Uint8Array(5); - DecodeStream.call(this); + // Most streams increase in size when decoded, but Ascii85 streams + // typically shrink by ~20%. + if (maybeLength) { + maybeLength = 0.8 * maybeLength; + } + DecodeStream.call(this, maybeLength); } Ascii85Stream.prototype = Object.create(DecodeStream.prototype); @@ -33529,17 +32187,19 @@ var Ascii85Stream = (function Ascii85StreamClosure() { } var bufferLength = this.bufferLength, buffer; + var i; // special code for z - if (c == Z_LOWER_CHAR) { + if (c === Z_LOWER_CHAR) { buffer = this.ensureBuffer(bufferLength + 4); - for (var i = 0; i < 4; ++i) + for (i = 0; i < 4; ++i) { buffer[bufferLength + i] = 0; + } this.bufferLength += 4; } else { var input = this.input; input[0] = c; - for (var i = 1; i < 5; ++i) { + for (i = 1; i < 5; ++i) { c = str.getByte(); while (Lexer.isSpace(c)) { c = str.getByte(); @@ -33547,23 +32207,26 @@ var Ascii85Stream = (function Ascii85StreamClosure() { input[i] = c; - if (c === EOF || c == TILDA_CHAR) + if (c === EOF || c === TILDA_CHAR) { break; + } } buffer = this.ensureBuffer(bufferLength + i - 1); this.bufferLength += i - 1; // partial ending; if (i < 5) { - for (; i < 5; ++i) + for (; i < 5; ++i) { input[i] = 0x21 + 84; + } this.eof = true; } var t = 0; - for (var i = 0; i < 5; ++i) + for (i = 0; i < 5; ++i) { t = t * 85 + (input[i] - 0x21); + } - for (var i = 3; i >= 0; --i) { + for (i = 3; i >= 0; --i) { buffer[bufferLength + i] = t & 0xFF; t >>= 8; } @@ -33574,13 +32237,18 @@ var Ascii85Stream = (function Ascii85StreamClosure() { })(); var AsciiHexStream = (function AsciiHexStreamClosure() { - function AsciiHexStream(str) { + function AsciiHexStream(str, maybeLength) { this.str = str; this.dict = str.dict; this.firstDigit = -1; - DecodeStream.call(this); + // Most streams increase in size when decoded, but AsciiHex streams shrink + // by 50%. + if (maybeLength) { + maybeLength = 0.5 * maybeLength; + } + DecodeStream.call(this, maybeLength); } AsciiHexStream.prototype = Object.create(DecodeStream.prototype); @@ -33631,11 +32299,11 @@ var AsciiHexStream = (function AsciiHexStreamClosure() { })(); var RunLengthStream = (function RunLengthStreamClosure() { - function RunLengthStream(str) { + function RunLengthStream(str, maybeLength) { this.str = str; this.dict = str.dict; - DecodeStream.call(this); + DecodeStream.call(this, maybeLength); } RunLengthStream.prototype = Object.create(DecodeStream.prototype); @@ -33646,16 +32314,17 @@ var RunLengthStream = (function RunLengthStreamClosure() { // (in addition to the second byte from the header), n = 129 through 255 - // duplicate the second byte from the header (257 - n) times, n = 128 - end. var repeatHeader = this.str.getBytes(2); - if (!repeatHeader || repeatHeader.length < 2 || repeatHeader[0] == 128) { + if (!repeatHeader || repeatHeader.length < 2 || repeatHeader[0] === 128) { this.eof = true; return; } + var buffer; var bufferLength = this.bufferLength; var n = repeatHeader[0]; if (n < 128) { // copy n bytes - var buffer = this.ensureBuffer(bufferLength + n + 1); + buffer = this.ensureBuffer(bufferLength + n + 1); buffer[bufferLength++] = repeatHeader[1]; if (n > 0) { var source = this.str.getBytes(n); @@ -33665,9 +32334,10 @@ var RunLengthStream = (function RunLengthStreamClosure() { } else { n = 257 - n; var b = repeatHeader[1]; - var buffer = this.ensureBuffer(bufferLength + n + 1); - for (var i = 0; i < n; i++) + buffer = this.ensureBuffer(bufferLength + n + 1); + for (var i = 0; i < n; i++) { buffer[bufferLength++] = b; + } } this.bufferLength = bufferLength; }; @@ -34103,11 +32773,11 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { [2, 2], [2, 2], [2, 2], [2, 2] ]; - function CCITTFaxStream(str, params) { + function CCITTFaxStream(str, maybeLength, params) { this.str = str; this.dict = str.dict; - params = params || new Dict(); + params = params || Dict.empty; this.encoding = params.get('K') || 0; this.eoline = params.get('EndOfLine') || false; @@ -34115,8 +32785,9 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { this.columns = params.get('Columns') || 1728; this.rows = params.get('Rows') || 0; var eoblock = params.get('EndOfBlock'); - if (eoblock === null || eoblock === undefined) + if (eoblock === null || eoblock === undefined) { eoblock = true; + } this.eoblock = eoblock; this.black = params.get('BlackIs1') || false; @@ -34131,13 +32802,12 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { this.inputBits = 0; this.inputBuf = 0; this.outputBits = 0; - this.buf = EOF; var code1; while ((code1 = this.lookBits(12)) === 0) { this.eatBits(1); } - if (code1 == 1) { + if (code1 === 1) { this.eatBits(12); } if (this.encoding > 0) { @@ -34145,7 +32815,7 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { this.eatBits(1); } - DecodeStream.call(this); + DecodeStream.call(this, maybeLength); } CCITTFaxStream.prototype = Object.create(DecodeStream.prototype); @@ -34153,14 +32823,13 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { CCITTFaxStream.prototype.readBlock = function CCITTFaxStream_readBlock() { while (!this.eof) { var c = this.lookChar(); - this.buf = EOF; this.ensureBuffer(this.bufferLength + 1); this.buffer[this.bufferLength++] = c; } }; CCITTFaxStream.prototype.addPixels = - function ccittFaxStreamAddPixels(a1, blackPixels) { + function ccittFaxStreamAddPixels(a1, blackPixels) { var codingLine = this.codingLine; var codingPos = this.codingPos; @@ -34180,7 +32849,7 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { }; CCITTFaxStream.prototype.addPixelsNeg = - function ccittFaxStreamAddPixelsNeg(a1, blackPixels) { + function ccittFaxStreamAddPixelsNeg(a1, blackPixels) { var codingLine = this.codingLine; var codingPos = this.codingPos; @@ -34190,8 +32859,9 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { this.err = true; a1 = this.columns; } - if ((codingPos & 1) ^ blackPixels) + if ((codingPos & 1) ^ blackPixels) { ++codingPos; + } codingLine[codingPos] = a1; } else if (a1 < codingLine[codingPos]) { @@ -34200,8 +32870,9 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { this.err = true; a1 = 0; } - while (codingPos > 0 && a1 < codingLine[codingPos - 1]) + while (codingPos > 0 && a1 < codingLine[codingPos - 1]) { --codingPos; + } codingLine[codingPos] = a1; } @@ -34209,26 +32880,23 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { }; CCITTFaxStream.prototype.lookChar = function CCITTFaxStream_lookChar() { - if (this.buf != EOF) - return this.buf; - var refLine = this.refLine; var codingLine = this.codingLine; var columns = this.columns; - var refPos, blackPixels, bits; + var refPos, blackPixels, bits, i; if (this.outputBits === 0) { - if (this.eof) + if (this.eof) { return null; - + } this.err = false; var code1, code2, code3; if (this.nextLine2D) { - for (var i = 0; codingLine[i] < columns; ++i) + for (i = 0; codingLine[i] < columns; ++i) { refLine[i] = codingLine[i]; - + } refLine[i++] = columns; refLine[i] = columns; codingLine[0] = 0; @@ -34241,8 +32909,9 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { switch (code1) { case twoDimPass: this.addPixels(refLine[refPos + 1], blackPixels); - if (refLine[refPos + 1] < columns) + if (refLine[refPos + 1] < columns) { refPos += 2; + } break; case twoDimHoriz: code1 = code2 = 0; @@ -34278,8 +32947,9 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { if (codingLine[this.codingPos] < columns) { ++refPos; while (refLine[refPos] <= codingLine[this.codingPos] && - refLine[refPos] < columns) + refLine[refPos] < columns) { refPos += 2; + } } break; case twoDimVertR2: @@ -34299,8 +32969,9 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { if (codingLine[this.codingPos] < columns) { ++refPos; while (refLine[refPos] <= codingLine[this.codingPos] && - refLine[refPos] < columns) + refLine[refPos] < columns) { refPos += 2; + } } break; case twoDimVert0: @@ -34309,48 +32980,54 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { if (codingLine[this.codingPos] < columns) { ++refPos; while (refLine[refPos] <= codingLine[this.codingPos] && - refLine[refPos] < columns) + refLine[refPos] < columns) { refPos += 2; + } } break; case twoDimVertL3: this.addPixelsNeg(refLine[refPos] - 3, blackPixels); blackPixels ^= 1; if (codingLine[this.codingPos] < columns) { - if (refPos > 0) + if (refPos > 0) { --refPos; - else + } else { ++refPos; + } while (refLine[refPos] <= codingLine[this.codingPos] && - refLine[refPos] < columns) + refLine[refPos] < columns) { refPos += 2; + } } break; case twoDimVertL2: this.addPixelsNeg(refLine[refPos] - 2, blackPixels); blackPixels ^= 1; if (codingLine[this.codingPos] < columns) { - if (refPos > 0) + if (refPos > 0) { --refPos; - else + } else { ++refPos; + } while (refLine[refPos] <= codingLine[this.codingPos] && - refLine[refPos] < columns) + refLine[refPos] < columns) { refPos += 2; + } } break; case twoDimVertL1: this.addPixelsNeg(refLine[refPos] - 1, blackPixels); blackPixels ^= 1; if (codingLine[this.codingPos] < columns) { - if (refPos > 0) + if (refPos > 0) { --refPos; - else + } else { ++refPos; - + } while (refLine[refPos] <= codingLine[this.codingPos] && - refLine[refPos] < columns) + refLine[refPos] < columns) { refPos += 2; + } } break; case EOF: @@ -34383,45 +33060,54 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { } } - if (this.byteAlign) - this.inputBits &= ~7; - var gotEOL = false; - if (!this.eoblock && this.row == this.rows - 1) { + if (!this.eoblock && this.row === this.rows - 1) { this.eof = true; - } else { + } else if (this.eoline || !this.byteAlign) { code1 = this.lookBits(12); - while (code1 === 0) { - this.eatBits(1); - code1 = this.lookBits(12); + if (this.eoline) { + while (code1 !== EOF && code1 !== 1) { + this.eatBits(1); + code1 = this.lookBits(12); + } + } else { + while (code1 === 0) { + this.eatBits(1); + code1 = this.lookBits(12); + } } - if (code1 == 1) { + if (code1 === 1) { this.eatBits(12); gotEOL = true; - } else if (code1 == EOF) { + } else if (code1 === EOF) { this.eof = true; } } + if (this.byteAlign && !gotEOL) { + this.inputBits &= ~7; + } + if (!this.eof && this.encoding > 0) { this.nextLine2D = !this.lookBits(1); this.eatBits(1); } - if (this.eoblock && gotEOL) { + if (this.eoblock && gotEOL && this.byteAlign) { code1 = this.lookBits(12); - if (code1 == 1) { + if (code1 === 1) { this.eatBits(12); if (this.encoding > 0) { this.lookBits(1); this.eatBits(1); } if (this.encoding >= 0) { - for (var i = 0; i < 4; ++i) { + for (i = 0; i < 4; ++i) { code1 = this.lookBits(12); - if (code1 != 1) + if (code1 !== 1) { info('bad rtc code: ' + code1); + } this.eatBits(12); if (this.encoding > 0) { this.lookBits(1); @@ -34434,11 +33120,11 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { } else if (this.err && this.eoline) { while (true) { code1 = this.lookBits(13); - if (code1 == EOF) { + if (code1 === EOF) { this.eof = true; return null; } - if ((code1 >> 1) == 1) { + if ((code1 >> 1) === 1) { break; } this.eatBits(1); @@ -34450,15 +33136,17 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { } } - if (codingLine[0] > 0) + if (codingLine[0] > 0) { this.outputBits = codingLine[this.codingPos = 0]; - else + } else { this.outputBits = codingLine[this.codingPos = 1]; + } this.row++; } + var c; if (this.outputBits >= 8) { - this.buf = (this.codingPos & 1) ? 0 : 0xFF; + c = (this.codingPos & 1) ? 0 : 0xFF; this.outputBits -= 8; if (this.outputBits === 0 && codingLine[this.codingPos] < columns) { this.codingPos++; @@ -34466,20 +33154,20 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { codingLine[this.codingPos - 1]); } } else { - var bits = 8; - this.buf = 0; + bits = 8; + c = 0; do { if (this.outputBits > bits) { - this.buf <<= bits; + c <<= bits; if (!(this.codingPos & 1)) { - this.buf |= 0xFF >> (8 - bits); + c |= 0xFF >> (8 - bits); } this.outputBits -= bits; bits = 0; } else { - this.buf <<= this.outputBits; + c <<= this.outputBits; if (!(this.codingPos & 1)) { - this.buf |= 0xFF >> (8 - this.outputBits); + c |= 0xFF >> (8 - this.outputBits); } bits -= this.outputBits; this.outputBits = 0; @@ -34488,16 +33176,16 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { this.outputBits = (codingLine[this.codingPos] - codingLine[this.codingPos - 1]); } else if (bits > 0) { - this.buf <<= bits; + c <<= bits; bits = 0; } } } while (bits); } if (this.black) { - this.buf ^= 0xFF; + c ^= 0xFF; } - return this.buf; + return c; }; // This functions returns the code found from the table. @@ -34507,18 +33195,20 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { // returned. The second array element is the actual code. The third array // element indicates whether EOF was reached. CCITTFaxStream.prototype.findTableCode = - function ccittFaxStreamFindTableCode(start, end, table, limit) { + function ccittFaxStreamFindTableCode(start, end, table, limit) { var limitValue = limit || 0; for (var i = start; i <= end; ++i) { var code = this.lookBits(i); - if (code == EOF) + if (code === EOF) { return [true, 1, false]; - if (i < end) + } + if (i < end) { code <<= end - i; + } if (!limitValue || code >= limitValue) { var p = table[code - limitValue]; - if (p[0] == i) { + if (p[0] === i) { this.eatBits(i); return [true, p[1], true]; } @@ -34528,7 +33218,7 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { }; CCITTFaxStream.prototype.getTwoDimCode = - function ccittFaxStreamGetTwoDimCode() { + function ccittFaxStreamGetTwoDimCode() { var code = 0; var p; @@ -34541,28 +33231,30 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { } } else { var result = this.findTableCode(1, 7, twoDimTable); - if (result[0] && result[2]) + if (result[0] && result[2]) { return result[1]; + } } info('Bad two dim code'); return EOF; }; CCITTFaxStream.prototype.getWhiteCode = - function ccittFaxStreamGetWhiteCode() { + function ccittFaxStreamGetWhiteCode() { var code = 0; var p; - var n; if (this.eoblock) { code = this.lookBits(12); - if (code == EOF) + if (code === EOF) { return 1; + } - if ((code >> 5) === 0) + if ((code >> 5) === 0) { p = whiteTable1[code]; - else + } else { p = whiteTable2[code >> 3]; + } if (p[0] > 0) { this.eatBits(p[0]); @@ -34570,12 +33262,14 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { } } else { var result = this.findTableCode(1, 9, whiteTable2); - if (result[0]) + if (result[0]) { return result[1]; + } result = this.findTableCode(11, 12, whiteTable1); - if (result[0]) + if (result[0]) { return result[1]; + } } info('bad white code'); this.eatBits(1); @@ -34583,19 +33277,21 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { }; CCITTFaxStream.prototype.getBlackCode = - function ccittFaxStreamGetBlackCode() { + function ccittFaxStreamGetBlackCode() { var code, p; if (this.eoblock) { code = this.lookBits(13); - if (code == EOF) + if (code === EOF) { return 1; - if ((code >> 7) === 0) + } + if ((code >> 7) === 0) { p = blackTable1[code]; - else if ((code >> 9) === 0 && (code >> 7) !== 0) + } else if ((code >> 9) === 0 && (code >> 7) !== 0) { p = blackTable2[(code >> 1) - 64]; - else + } else { p = blackTable3[code >> 7]; + } if (p[0] > 0) { this.eatBits(p[0]); @@ -34603,16 +33299,19 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { } } else { var result = this.findTableCode(2, 6, blackTable3); - if (result[0]) + if (result[0]) { return result[1]; + } result = this.findTableCode(7, 12, blackTable2, 64); - if (result[0]) + if (result[0]) { return result[1]; + } result = this.findTableCode(10, 13, blackTable1); - if (result[0]) + if (result[0]) { return result[1]; + } } info('bad black code'); this.eatBits(1); @@ -34623,8 +33322,9 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { var c; while (this.inputBits < n) { if ((c = this.str.getByte()) === -1) { - if (this.inputBits === 0) + if (this.inputBits === 0) { return EOF; + } return ((this.inputBuf << (n - this.inputBits)) & (0xFFFF >> (16 - n))); } @@ -34635,15 +33335,16 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { }; CCITTFaxStream.prototype.eatBits = function CCITTFaxStream_eatBits(n) { - if ((this.inputBits -= n) < 0) + if ((this.inputBits -= n) < 0) { this.inputBits = 0; + } }; return CCITTFaxStream; })(); var LZWStream = (function LZWStreamClosure() { - function LZWStream(str, earlyChange) { + function LZWStream(str, maybeLength, earlyChange) { this.str = str; this.dict = str.dict; this.cachedData = 0; @@ -34666,7 +33367,7 @@ var LZWStream = (function LZWStreamClosure() { } this.lzwState = lzwState; - DecodeStream.call(this); + DecodeStream.call(this, maybeLength); } LZWStream.prototype = Object.create(DecodeStream.prototype); @@ -34695,8 +33396,9 @@ var LZWStream = (function LZWStreamClosure() { var i, j, q; var lzwState = this.lzwState; - if (!lzwState) + if (!lzwState) { return; // eof was found + } var earlyChange = lzwState.earlyChange; var nextCode = lzwState.nextCode; @@ -34728,7 +33430,7 @@ var LZWStream = (function LZWStreamClosure() { } else { currentSequence[currentSequenceLength++] = currentSequence[0]; } - } else if (code == 256) { + } else if (code === 256) { codeLength = 9; nextCode = 258; currentSequenceLength = 0; @@ -34757,8 +33459,9 @@ var LZWStream = (function LZWStreamClosure() { } while (estimatedDecodedSize < decodedLength); buffer = this.ensureBuffer(this.bufferLength + estimatedDecodedSize); } - for (j = 0; j < currentSequenceLength; j++) + for (j = 0; j < currentSequenceLength; j++) { buffer[currentBufferLength++] = currentSequence[j]; + } } lzwState.nextCode = nextCode; lzwState.codeLength = codeLength; @@ -34787,76 +33490,66 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = { var pdfManager; function loadDocument(recoveryMode) { - var loadDocumentPromise = new LegacyPromise(); + var loadDocumentCapability = createPromiseCapability(); var parseSuccess = function parseSuccess() { - var numPagesPromise = pdfManager.ensureModel('numPages'); - var fingerprintPromise = pdfManager.ensureModel('fingerprint'); - var outlinePromise = pdfManager.ensureCatalog('documentOutline'); - var infoPromise = pdfManager.ensureModel('documentInfo'); - var metadataPromise = pdfManager.ensureCatalog('metadata'); + var numPagesPromise = pdfManager.ensureDoc('numPages'); + var fingerprintPromise = pdfManager.ensureDoc('fingerprint'); var encryptedPromise = pdfManager.ensureXRef('encrypt'); - var javaScriptPromise = pdfManager.ensureCatalog('javaScript'); - Promise.all([numPagesPromise, fingerprintPromise, outlinePromise, - infoPromise, metadataPromise, encryptedPromise, - javaScriptPromise]).then( - function onDocReady(results) { - + Promise.all([numPagesPromise, fingerprintPromise, + encryptedPromise]).then(function onDocReady(results) { var doc = { numPages: results[0], fingerprint: results[1], - outline: results[2], - info: results[3], - metadata: results[4], - encrypted: !!results[5], - javaScript: results[6] + encrypted: !!results[2], }; - loadDocumentPromise.resolve(doc); + loadDocumentCapability.resolve(doc); }, parseFailure); }; var parseFailure = function parseFailure(e) { - loadDocumentPromise.reject(e); + loadDocumentCapability.reject(e); }; - pdfManager.ensureModel('checkHeader', []).then(function() { - pdfManager.ensureModel('parseStartXRef', []).then(function() { - pdfManager.ensureModel('parse', [recoveryMode]).then( - parseSuccess, parseFailure); + pdfManager.ensureDoc('checkHeader', []).then(function() { + pdfManager.ensureDoc('parseStartXRef', []).then(function() { + pdfManager.ensureDoc('parse', [recoveryMode]).then( + parseSuccess, parseFailure); }, parseFailure); }, parseFailure); - return loadDocumentPromise; + return loadDocumentCapability.promise; } function getPdfManager(data) { - var pdfManagerPromise = new LegacyPromise(); + var pdfManagerCapability = createPromiseCapability(); var source = data.source; var disableRange = data.disableRange; if (source.data) { try { pdfManager = new LocalPdfManager(source.data, source.password); - pdfManagerPromise.resolve(); + pdfManagerCapability.resolve(); } catch (ex) { - pdfManagerPromise.reject(ex); + pdfManagerCapability.reject(ex); } - return pdfManagerPromise; + return pdfManagerCapability.promise; } else if (source.chunkedViewerLoading) { try { pdfManager = new NetworkPdfManager(source, handler); - pdfManagerPromise.resolve(); + pdfManagerCapability.resolve(); } catch (ex) { - pdfManagerPromise.reject(ex); + pdfManagerCapability.reject(ex); } - return pdfManagerPromise; + return pdfManagerCapability.promise; } var networkManager = new NetworkManager(source.url, { httpHeaders: source.httpHeaders, withCredentials: source.withCredentials }); + var cachedChunks = []; var fullRequestXhrId = networkManager.requestFull({ onHeadersReceived: function onHeadersReceived() { if (disableRange) { @@ -34879,53 +33572,102 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = { if (!isInt(length)) { return; } - - // NOTE: by cancelling the full request, and then issuing range - // requests, there will be an issue for sites where you can only - // request the pdf once. However, if this is the case, then the - // server should not be returning that it can support range requests. - networkManager.abortRequest(fullRequestXhrId); - source.length = length; + if (length <= 2 * RANGE_CHUNK_SIZE) { + // The file size is smaller than the size of two chunks, so it does + // not make any sense to abort the request and retry with a range + // request. + return; + } + + if (networkManager.isStreamingRequest(fullRequestXhrId)) { + // We can continue fetching when progressive loading is enabled, + // and we don't need the autoFetch feature. + source.disableAutoFetch = true; + } else { + // NOTE: by cancelling the full request, and then issuing range + // requests, there will be an issue for sites where you can only + // request the pdf once. However, if this is the case, then the + // server should not be returning that it can support range + // requests. + networkManager.abortRequest(fullRequestXhrId); + } + try { pdfManager = new NetworkPdfManager(source, handler); - pdfManagerPromise.resolve(pdfManager); + pdfManagerCapability.resolve(pdfManager); } catch (ex) { - pdfManagerPromise.reject(ex); + pdfManagerCapability.reject(ex); } }, + onProgressiveData: source.disableStream ? null : + function onProgressiveData(chunk) { + if (!pdfManager) { + cachedChunks.push(chunk); + return; + } + pdfManager.sendProgressiveData(chunk); + }, + onDone: function onDone(args) { + if (pdfManager) { + return; // already processed + } + + var pdfFile; + if (args === null) { + // TODO add some streaming manager, e.g. for unknown length files. + // The data was returned in the onProgressiveData, combining... + var pdfFileLength = 0, pos = 0; + cachedChunks.forEach(function (chunk) { + pdfFileLength += chunk.byteLength; + }); + if (source.length && pdfFileLength !== source.length) { + warn('reported HTTP length is different from actual'); + } + var pdfFileArray = new Uint8Array(pdfFileLength); + cachedChunks.forEach(function (chunk) { + pdfFileArray.set(new Uint8Array(chunk), pos); + pos += chunk.byteLength; + }); + pdfFile = pdfFileArray.buffer; + } else { + pdfFile = args.chunk; + } + // the data is array, instantiating directly from it try { - pdfManager = new LocalPdfManager(args.chunk, source.password); - pdfManagerPromise.resolve(); + pdfManager = new LocalPdfManager(pdfFile, source.password); + pdfManagerCapability.resolve(); } catch (ex) { - pdfManagerPromise.reject(ex); + pdfManagerCapability.reject(ex); } }, onError: function onError(status) { - if (status == 404) { - var exception = new MissingPDFException( 'Missing PDF "' + - source.url + '".'); - handler.send('MissingPDF', { exception: exception }); + var exception; + if (status === 404) { + exception = new MissingPDFException('Missing PDF "' + + source.url + '".'); + handler.send('MissingPDF', exception); } else { - handler.send('DocError', 'Unexpected server response (' + - status + ') while retrieving PDF "' + - source.url + '".'); + exception = new UnexpectedResponseException( + 'Unexpected server response (' + status + + ') while retrieving PDF "' + source.url + '".', status); + handler.send('UnexpectedResponse', exception); } }, onProgress: function onProgress(evt) { handler.send('DocProgress', { loaded: evt.loaded, - total: evt.lengthComputable ? evt.total : void(0) + total: evt.lengthComputable ? evt.total : source.length }); } }); - return pdfManagerPromise; + return pdfManagerCapability.promise; } handler.on('test', function wphSetupTest(data) { @@ -34965,26 +33707,19 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = { var onFailure = function(e) { if (e instanceof PasswordException) { if (e.code === PasswordResponses.NEED_PASSWORD) { - handler.send('NeedPassword', { - exception: e - }); + handler.send('NeedPassword', e); } else if (e.code === PasswordResponses.INCORRECT_PASSWORD) { - handler.send('IncorrectPassword', { - exception: e - }); + handler.send('IncorrectPassword', e); } } else if (e instanceof InvalidPDFException) { - handler.send('InvalidPDF', { - exception: e - }); + handler.send('InvalidPDF', e); } else if (e instanceof MissingPDFException) { - handler.send('MissingPDF', { - exception: e - }); + handler.send('MissingPDF', e); + } else if (e instanceof UnexpectedResponseException) { + handler.send('UnexpectedResponse', e); } else { - handler.send('UnknownError', { - exception: new UnknownErrorException(e.message, e.toString()) - }); + handler.send('UnknownError', + new UnknownErrorException(e.message, e.toString())); } }; @@ -34993,17 +33728,23 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = { PDFJS.disableFontFace = data.disableFontFace; PDFJS.disableCreateObjectURL = data.disableCreateObjectURL; PDFJS.verbosity = data.verbosity; + PDFJS.cMapUrl = data.cMapUrl === undefined ? + null : data.cMapUrl; + PDFJS.cMapPacked = data.cMapPacked === true; - getPdfManager(data).then(function pdfManagerReady() { + getPdfManager(data).then(function () { + handler.send('PDFManagerReady', null); + pdfManager.onLoadedStream().then(function(stream) { + handler.send('DataLoaded', { length: stream.bytes.byteLength }); + }); + }).then(function pdfManagerReady() { loadDocument(false).then(onSuccess, function loadFailure(ex) { // Try again with recoveryMode == true if (!(ex instanceof XRefParseException)) { if (ex instanceof PasswordException) { // after password exception prepare to receive a new password // to repeat loading - pdfManager.passwordChangedPromise = - new LegacyPromise(); - pdfManager.passwordChangedPromise.then(pdfManagerReady); + pdfManager.passwordChanged().then(pdfManagerReady); } onFailure(ex); @@ -35018,69 +33759,86 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = { }, onFailure); }); - handler.on('GetPageRequest', function wphSetupGetPage(data) { - var pageIndex = data.pageIndex; - pdfManager.getPage(pageIndex).then(function(page) { + handler.on('GetPage', function wphSetupGetPage(data) { + return pdfManager.getPage(data.pageIndex).then(function(page) { var rotatePromise = pdfManager.ensure(page, 'rotate'); var refPromise = pdfManager.ensure(page, 'ref'); var viewPromise = pdfManager.ensure(page, 'view'); - Promise.all([rotatePromise, refPromise, viewPromise]).then( + return Promise.all([rotatePromise, refPromise, viewPromise]).then( function(results) { - var page = { - pageIndex: data.pageIndex, + return { rotate: results[0], ref: results[1], view: results[2] }; - - handler.send('GetPage', { pageInfo: page }); }); }); }); - handler.on('GetPageIndex', function wphSetupGetPageIndex(data, deferred) { + handler.on('GetPageIndex', function wphSetupGetPageIndex(data) { var ref = new Ref(data.ref.num, data.ref.gen); - pdfManager.pdfModel.catalog.getPageIndex(ref).then(function (pageIndex) { - deferred.resolve(pageIndex); - }, deferred.reject); + var catalog = pdfManager.pdfDocument.catalog; + return catalog.getPageIndex(ref); }); handler.on('GetDestinations', - function wphSetupGetDestinations(data, deferred) { - pdfManager.ensureCatalog('destinations').then(function(destinations) { - deferred.resolve(destinations); - }); + function wphSetupGetDestinations(data) { + return pdfManager.ensureCatalog('destinations'); } ); - handler.on('GetData', function wphSetupGetData(data, deferred) { + handler.on('GetDestination', + function wphSetupGetDestination(data) { + return pdfManager.ensureCatalog('getDestination', [ data.id ]); + } + ); + + handler.on('GetAttachments', + function wphSetupGetAttachments(data) { + return pdfManager.ensureCatalog('attachments'); + } + ); + + handler.on('GetJavaScript', + function wphSetupGetJavaScript(data) { + return pdfManager.ensureCatalog('javaScript'); + } + ); + + handler.on('GetOutline', + function wphSetupGetOutline(data) { + return pdfManager.ensureCatalog('documentOutline'); + } + ); + + handler.on('GetMetadata', + function wphSetupGetMetadata(data) { + return Promise.all([pdfManager.ensureDoc('documentInfo'), + pdfManager.ensureCatalog('metadata')]); + } + ); + + handler.on('GetData', function wphSetupGetData(data) { pdfManager.requestLoadedStream(); - pdfManager.onLoadedStream().then(function(stream) { - deferred.resolve(stream.bytes); + return pdfManager.onLoadedStream().then(function(stream) { + return stream.bytes; }); }); - handler.on('DataLoaded', function wphSetupDataLoaded(data, deferred) { - pdfManager.onLoadedStream().then(function(stream) { - deferred.resolve({ length: stream.bytes.byteLength }); - }); - }); + handler.on('GetStats', + function wphSetupGetStats(data) { + return pdfManager.pdfDocument.xref.stats; + } + ); handler.on('UpdatePassword', function wphSetupUpdatePassword(data) { pdfManager.updatePassword(data); }); - handler.on('GetAnnotationsRequest', function wphSetupGetAnnotations(data) { - pdfManager.getPage(data.pageIndex).then(function(page) { - pdfManager.ensure(page, 'getAnnotationsData', []).then( - function(annotationsData) { - handler.send('GetAnnotations', { - pageIndex: data.pageIndex, - annotations: annotationsData - }); - } - ); + handler.on('GetAnnotations', function wphSetupGetAnnotations(data) { + return pdfManager.getPage(data.pageIndex).then(function(page) { + return pdfManager.ensure(page, 'getAnnotationsData', []); }); }); @@ -35090,15 +33848,15 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = { var pageNum = data.pageIndex + 1; var start = Date.now(); // Pre compile the pdf page and fetch the fonts/images. - page.getOperatorList(handler).then(function(operatorList) { + page.getOperatorList(handler, data.intent).then(function(operatorList) { - info('page=%d - getOperatorList: time=%dms, len=%d', pageNum, - Date.now() - start, operatorList.fnArray.length); + info('page=' + pageNum + ' - getOperatorList: time=' + + (Date.now() - start) + 'ms, len=' + operatorList.fnArray.length); }, function(e) { var minimumStackMessage = - 'worker.js: while trying to getPage() and getOperatorList()'; + 'worker.js: while trying to getPage() and getOperatorList()'; var wrappedException; @@ -35122,35 +33880,31 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = { handler.send('PageError', { pageNum: pageNum, - error: wrappedException + error: wrappedException, + intent: data.intent }); }); }); }, this); - handler.on('GetTextContent', function wphExtractText(data, deferred) { - pdfManager.getPage(data.pageIndex).then(function(page) { + handler.on('GetTextContent', function wphExtractText(data) { + return pdfManager.getPage(data.pageIndex).then(function(page) { var pageNum = data.pageIndex + 1; var start = Date.now(); - page.extractTextContent().then(function(textContent) { - deferred.resolve(textContent); - info('text indexing: page=%d - time=%dms', pageNum, - Date.now() - start); - }, function (e) { - // Skip errored pages - deferred.reject(e); + return page.extractTextContent().then(function(textContent) { + info('text indexing: page=' + pageNum + ' - time=' + + (Date.now() - start) + 'ms'); + return textContent; }); }); }); - handler.on('Cleanup', function wphCleanup(data, deferred) { - pdfManager.cleanup(); - deferred.resolve(true); + handler.on('Cleanup', function wphCleanup(data) { + return pdfManager.cleanup(); }); - handler.on('Terminate', function wphTerminate(data, deferred) { + handler.on('Terminate', function wphTerminate(data) { pdfManager.terminate(); - deferred.resolve(); }); } }; @@ -35208,6 +33962,1188 @@ if (typeof window === 'undefined') { } +/* This class implements the QM Coder decoding as defined in + * JPEG 2000 Part I Final Committee Draft Version 1.0 + * Annex C.3 Arithmetic decoding procedure + * available at http://www.jpeg.org/public/fcd15444-1.pdf + * + * The arithmetic decoder is used in conjunction with context models to decode + * JPEG2000 and JBIG2 streams. + */ +var ArithmeticDecoder = (function ArithmeticDecoderClosure() { + // Table C-2 + var QeTable = [ + {qe: 0x5601, nmps: 1, nlps: 1, switchFlag: 1}, + {qe: 0x3401, nmps: 2, nlps: 6, switchFlag: 0}, + {qe: 0x1801, nmps: 3, nlps: 9, switchFlag: 0}, + {qe: 0x0AC1, nmps: 4, nlps: 12, switchFlag: 0}, + {qe: 0x0521, nmps: 5, nlps: 29, switchFlag: 0}, + {qe: 0x0221, nmps: 38, nlps: 33, switchFlag: 0}, + {qe: 0x5601, nmps: 7, nlps: 6, switchFlag: 1}, + {qe: 0x5401, nmps: 8, nlps: 14, switchFlag: 0}, + {qe: 0x4801, nmps: 9, nlps: 14, switchFlag: 0}, + {qe: 0x3801, nmps: 10, nlps: 14, switchFlag: 0}, + {qe: 0x3001, nmps: 11, nlps: 17, switchFlag: 0}, + {qe: 0x2401, nmps: 12, nlps: 18, switchFlag: 0}, + {qe: 0x1C01, nmps: 13, nlps: 20, switchFlag: 0}, + {qe: 0x1601, nmps: 29, nlps: 21, switchFlag: 0}, + {qe: 0x5601, nmps: 15, nlps: 14, switchFlag: 1}, + {qe: 0x5401, nmps: 16, nlps: 14, switchFlag: 0}, + {qe: 0x5101, nmps: 17, nlps: 15, switchFlag: 0}, + {qe: 0x4801, nmps: 18, nlps: 16, switchFlag: 0}, + {qe: 0x3801, nmps: 19, nlps: 17, switchFlag: 0}, + {qe: 0x3401, nmps: 20, nlps: 18, switchFlag: 0}, + {qe: 0x3001, nmps: 21, nlps: 19, switchFlag: 0}, + {qe: 0x2801, nmps: 22, nlps: 19, switchFlag: 0}, + {qe: 0x2401, nmps: 23, nlps: 20, switchFlag: 0}, + {qe: 0x2201, nmps: 24, nlps: 21, switchFlag: 0}, + {qe: 0x1C01, nmps: 25, nlps: 22, switchFlag: 0}, + {qe: 0x1801, nmps: 26, nlps: 23, switchFlag: 0}, + {qe: 0x1601, nmps: 27, nlps: 24, switchFlag: 0}, + {qe: 0x1401, nmps: 28, nlps: 25, switchFlag: 0}, + {qe: 0x1201, nmps: 29, nlps: 26, switchFlag: 0}, + {qe: 0x1101, nmps: 30, nlps: 27, switchFlag: 0}, + {qe: 0x0AC1, nmps: 31, nlps: 28, switchFlag: 0}, + {qe: 0x09C1, nmps: 32, nlps: 29, switchFlag: 0}, + {qe: 0x08A1, nmps: 33, nlps: 30, switchFlag: 0}, + {qe: 0x0521, nmps: 34, nlps: 31, switchFlag: 0}, + {qe: 0x0441, nmps: 35, nlps: 32, switchFlag: 0}, + {qe: 0x02A1, nmps: 36, nlps: 33, switchFlag: 0}, + {qe: 0x0221, nmps: 37, nlps: 34, switchFlag: 0}, + {qe: 0x0141, nmps: 38, nlps: 35, switchFlag: 0}, + {qe: 0x0111, nmps: 39, nlps: 36, switchFlag: 0}, + {qe: 0x0085, nmps: 40, nlps: 37, switchFlag: 0}, + {qe: 0x0049, nmps: 41, nlps: 38, switchFlag: 0}, + {qe: 0x0025, nmps: 42, nlps: 39, switchFlag: 0}, + {qe: 0x0015, nmps: 43, nlps: 40, switchFlag: 0}, + {qe: 0x0009, nmps: 44, nlps: 41, switchFlag: 0}, + {qe: 0x0005, nmps: 45, nlps: 42, switchFlag: 0}, + {qe: 0x0001, nmps: 45, nlps: 43, switchFlag: 0}, + {qe: 0x5601, nmps: 46, nlps: 46, switchFlag: 0} + ]; + + // C.3.5 Initialisation of the decoder (INITDEC) + function ArithmeticDecoder(data, start, end) { + this.data = data; + this.bp = start; + this.dataEnd = end; + + this.chigh = data[start]; + this.clow = 0; + + this.byteIn(); + + this.chigh = ((this.chigh << 7) & 0xFFFF) | ((this.clow >> 9) & 0x7F); + this.clow = (this.clow << 7) & 0xFFFF; + this.ct -= 7; + this.a = 0x8000; + } + + ArithmeticDecoder.prototype = { + // C.3.4 Compressed data input (BYTEIN) + byteIn: function ArithmeticDecoder_byteIn() { + var data = this.data; + var bp = this.bp; + if (data[bp] === 0xFF) { + var b1 = data[bp + 1]; + if (b1 > 0x8F) { + this.clow += 0xFF00; + this.ct = 8; + } else { + bp++; + this.clow += (data[bp] << 9); + this.ct = 7; + this.bp = bp; + } + } else { + bp++; + this.clow += bp < this.dataEnd ? (data[bp] << 8) : 0xFF00; + this.ct = 8; + this.bp = bp; + } + if (this.clow > 0xFFFF) { + this.chigh += (this.clow >> 16); + this.clow &= 0xFFFF; + } + }, + // C.3.2 Decoding a decision (DECODE) + readBit: function ArithmeticDecoder_readBit(contexts, pos) { + // contexts are packed into 1 byte: + // highest 7 bits carry cx.index, lowest bit carries cx.mps + var cx_index = contexts[pos] >> 1, cx_mps = contexts[pos] & 1; + var qeTableIcx = QeTable[cx_index]; + var qeIcx = qeTableIcx.qe; + var d; + var a = this.a - qeIcx; + + if (this.chigh < qeIcx) { + // exchangeLps + if (a < qeIcx) { + a = qeIcx; + d = cx_mps; + cx_index = qeTableIcx.nmps; + } else { + a = qeIcx; + d = 1 ^ cx_mps; + if (qeTableIcx.switchFlag === 1) { + cx_mps = d; + } + cx_index = qeTableIcx.nlps; + } + } else { + this.chigh -= qeIcx; + if ((a & 0x8000) !== 0) { + this.a = a; + return cx_mps; + } + // exchangeMps + if (a < qeIcx) { + d = 1 ^ cx_mps; + if (qeTableIcx.switchFlag === 1) { + cx_mps = d; + } + cx_index = qeTableIcx.nlps; + } else { + d = cx_mps; + cx_index = qeTableIcx.nmps; + } + } + // C.3.3 renormD; + do { + if (this.ct === 0) { + this.byteIn(); + } + + a <<= 1; + this.chigh = ((this.chigh << 1) & 0xFFFF) | ((this.clow >> 15) & 1); + this.clow = (this.clow << 1) & 0xFFFF; + this.ct--; + } while ((a & 0x8000) === 0); + this.a = a; + + contexts[pos] = cx_index << 1 | cx_mps; + return d; + } + }; + + return ArithmeticDecoder; +})(); + + +var JpegImage = (function jpegImage() { + var dctZigZag = new Uint8Array([ + 0, + 1, 8, + 16, 9, 2, + 3, 10, 17, 24, + 32, 25, 18, 11, 4, + 5, 12, 19, 26, 33, 40, + 48, 41, 34, 27, 20, 13, 6, + 7, 14, 21, 28, 35, 42, 49, 56, + 57, 50, 43, 36, 29, 22, 15, + 23, 30, 37, 44, 51, 58, + 59, 52, 45, 38, 31, + 39, 46, 53, 60, + 61, 54, 47, + 55, 62, + 63 + ]); + + var dctCos1 = 4017; // cos(pi/16) + var dctSin1 = 799; // sin(pi/16) + var dctCos3 = 3406; // cos(3*pi/16) + var dctSin3 = 2276; // sin(3*pi/16) + var dctCos6 = 1567; // cos(6*pi/16) + var dctSin6 = 3784; // sin(6*pi/16) + var dctSqrt2 = 5793; // sqrt(2) + var dctSqrt1d2 = 2896; // sqrt(2) / 2 + + function constructor() { + } + + function buildHuffmanTable(codeLengths, values) { + var k = 0, code = [], i, j, length = 16; + while (length > 0 && !codeLengths[length - 1]) { + length--; + } + code.push({children: [], index: 0}); + var p = code[0], q; + for (i = 0; i < length; i++) { + for (j = 0; j < codeLengths[i]; j++) { + p = code.pop(); + p.children[p.index] = values[k]; + while (p.index > 0) { + p = code.pop(); + } + p.index++; + code.push(p); + while (code.length <= i) { + code.push(q = {children: [], index: 0}); + p.children[p.index] = q.children; + p = q; + } + k++; + } + if (i + 1 < length) { + // p here points to last code + code.push(q = {children: [], index: 0}); + p.children[p.index] = q.children; + p = q; + } + } + return code[0].children; + } + + function getBlockBufferOffset(component, row, col) { + return 64 * ((component.blocksPerLine + 1) * row + col); + } + + function decodeScan(data, offset, frame, components, resetInterval, + spectralStart, spectralEnd, successivePrev, successive) { + var precision = frame.precision; + var samplesPerLine = frame.samplesPerLine; + var scanLines = frame.scanLines; + var mcusPerLine = frame.mcusPerLine; + var progressive = frame.progressive; + var maxH = frame.maxH, maxV = frame.maxV; + + var startOffset = offset, bitsData = 0, bitsCount = 0; + + function readBit() { + if (bitsCount > 0) { + bitsCount--; + return (bitsData >> bitsCount) & 1; + } + bitsData = data[offset++]; + if (bitsData === 0xFF) { + var nextByte = data[offset++]; + if (nextByte) { + throw 'unexpected marker: ' + + ((bitsData << 8) | nextByte).toString(16); + } + // unstuff 0 + } + bitsCount = 7; + return bitsData >>> 7; + } + + function decodeHuffman(tree) { + var node = tree; + var bit; + while ((bit = readBit()) !== null) { + node = node[bit]; + if (typeof node === 'number') { + return node; + } + if (typeof node !== 'object') { + throw 'invalid huffman sequence'; + } + } + return null; + } + + function receive(length) { + var n = 0; + while (length > 0) { + var bit = readBit(); + if (bit === null) { + return; + } + n = (n << 1) | bit; + length--; + } + return n; + } + + function receiveAndExtend(length) { + if (length === 1) { + return readBit() === 1 ? 1 : -1; + } + var n = receive(length); + if (n >= 1 << (length - 1)) { + return n; + } + return n + (-1 << length) + 1; + } + + function decodeBaseline(component, offset) { + var t = decodeHuffman(component.huffmanTableDC); + var diff = t === 0 ? 0 : receiveAndExtend(t); + component.blockData[offset] = (component.pred += diff); + var k = 1; + while (k < 64) { + var rs = decodeHuffman(component.huffmanTableAC); + var s = rs & 15, r = rs >> 4; + if (s === 0) { + if (r < 15) { + break; + } + k += 16; + continue; + } + k += r; + var z = dctZigZag[k]; + component.blockData[offset + z] = receiveAndExtend(s); + k++; + } + } + + function decodeDCFirst(component, offset) { + var t = decodeHuffman(component.huffmanTableDC); + var diff = t === 0 ? 0 : (receiveAndExtend(t) << successive); + component.blockData[offset] = (component.pred += diff); + } + + function decodeDCSuccessive(component, offset) { + component.blockData[offset] |= readBit() << successive; + } + + var eobrun = 0; + function decodeACFirst(component, offset) { + if (eobrun > 0) { + eobrun--; + return; + } + var k = spectralStart, e = spectralEnd; + while (k <= e) { + var rs = decodeHuffman(component.huffmanTableAC); + var s = rs & 15, r = rs >> 4; + if (s === 0) { + if (r < 15) { + eobrun = receive(r) + (1 << r) - 1; + break; + } + k += 16; + continue; + } + k += r; + var z = dctZigZag[k]; + component.blockData[offset + z] = + receiveAndExtend(s) * (1 << successive); + k++; + } + } + + var successiveACState = 0, successiveACNextValue; + function decodeACSuccessive(component, offset) { + var k = spectralStart; + var e = spectralEnd; + var r = 0; + var s; + var rs; + while (k <= e) { + var z = dctZigZag[k]; + switch (successiveACState) { + case 0: // initial state + rs = decodeHuffman(component.huffmanTableAC); + s = rs & 15; + r = rs >> 4; + if (s === 0) { + if (r < 15) { + eobrun = receive(r) + (1 << r); + successiveACState = 4; + } else { + r = 16; + successiveACState = 1; + } + } else { + if (s !== 1) { + throw 'invalid ACn encoding'; + } + successiveACNextValue = receiveAndExtend(s); + successiveACState = r ? 2 : 3; + } + continue; + case 1: // skipping r zero items + case 2: + if (component.blockData[offset + z]) { + component.blockData[offset + z] += (readBit() << successive); + } else { + r--; + if (r === 0) { + successiveACState = successiveACState === 2 ? 3 : 0; + } + } + break; + case 3: // set value for a zero item + if (component.blockData[offset + z]) { + component.blockData[offset + z] += (readBit() << successive); + } else { + component.blockData[offset + z] = + successiveACNextValue << successive; + successiveACState = 0; + } + break; + case 4: // eob + if (component.blockData[offset + z]) { + component.blockData[offset + z] += (readBit() << successive); + } + break; + } + k++; + } + if (successiveACState === 4) { + eobrun--; + if (eobrun === 0) { + successiveACState = 0; + } + } + } + + function decodeMcu(component, decode, mcu, row, col) { + var mcuRow = (mcu / mcusPerLine) | 0; + var mcuCol = mcu % mcusPerLine; + var blockRow = mcuRow * component.v + row; + var blockCol = mcuCol * component.h + col; + var offset = getBlockBufferOffset(component, blockRow, blockCol); + decode(component, offset); + } + + function decodeBlock(component, decode, mcu) { + var blockRow = (mcu / component.blocksPerLine) | 0; + var blockCol = mcu % component.blocksPerLine; + var offset = getBlockBufferOffset(component, blockRow, blockCol); + decode(component, offset); + } + + var componentsLength = components.length; + var component, i, j, k, n; + var decodeFn; + if (progressive) { + if (spectralStart === 0) { + decodeFn = successivePrev === 0 ? decodeDCFirst : decodeDCSuccessive; + } else { + decodeFn = successivePrev === 0 ? decodeACFirst : decodeACSuccessive; + } + } else { + decodeFn = decodeBaseline; + } + + var mcu = 0, marker; + var mcuExpected; + if (componentsLength === 1) { + mcuExpected = components[0].blocksPerLine * components[0].blocksPerColumn; + } else { + mcuExpected = mcusPerLine * frame.mcusPerColumn; + } + if (!resetInterval) { + resetInterval = mcuExpected; + } + + var h, v; + while (mcu < mcuExpected) { + // reset interval stuff + for (i = 0; i < componentsLength; i++) { + components[i].pred = 0; + } + eobrun = 0; + + if (componentsLength === 1) { + component = components[0]; + for (n = 0; n < resetInterval; n++) { + decodeBlock(component, decodeFn, mcu); + mcu++; + } + } else { + for (n = 0; n < resetInterval; n++) { + for (i = 0; i < componentsLength; i++) { + component = components[i]; + h = component.h; + v = component.v; + for (j = 0; j < v; j++) { + for (k = 0; k < h; k++) { + decodeMcu(component, decodeFn, mcu, j, k); + } + } + } + mcu++; + } + } + + // find marker + bitsCount = 0; + marker = (data[offset] << 8) | data[offset + 1]; + if (marker <= 0xFF00) { + throw 'marker was not found'; + } + + if (marker >= 0xFFD0 && marker <= 0xFFD7) { // RSTx + offset += 2; + } else { + break; + } + } + + return offset - startOffset; + } + + // A port of poppler's IDCT method which in turn is taken from: + // Christoph Loeffler, Adriaan Ligtenberg, George S. Moschytz, + // 'Practical Fast 1-D DCT Algorithms with 11 Multiplications', + // IEEE Intl. Conf. on Acoustics, Speech & Signal Processing, 1989, + // 988-991. + function quantizeAndInverse(component, blockBufferOffset, p) { + var qt = component.quantizationTable, blockData = component.blockData; + var v0, v1, v2, v3, v4, v5, v6, v7; + var p0, p1, p2, p3, p4, p5, p6, p7; + var t; + + // inverse DCT on rows + for (var row = 0; row < 64; row += 8) { + // gather block data + p0 = blockData[blockBufferOffset + row]; + p1 = blockData[blockBufferOffset + row + 1]; + p2 = blockData[blockBufferOffset + row + 2]; + p3 = blockData[blockBufferOffset + row + 3]; + p4 = blockData[blockBufferOffset + row + 4]; + p5 = blockData[blockBufferOffset + row + 5]; + p6 = blockData[blockBufferOffset + row + 6]; + p7 = blockData[blockBufferOffset + row + 7]; + + // dequant p0 + p0 *= qt[row]; + + // check for all-zero AC coefficients + if ((p1 | p2 | p3 | p4 | p5 | p6 | p7) === 0) { + t = (dctSqrt2 * p0 + 512) >> 10; + p[row] = t; + p[row + 1] = t; + p[row + 2] = t; + p[row + 3] = t; + p[row + 4] = t; + p[row + 5] = t; + p[row + 6] = t; + p[row + 7] = t; + continue; + } + // dequant p1 ... p7 + p1 *= qt[row + 1]; + p2 *= qt[row + 2]; + p3 *= qt[row + 3]; + p4 *= qt[row + 4]; + p5 *= qt[row + 5]; + p6 *= qt[row + 6]; + p7 *= qt[row + 7]; + + // stage 4 + v0 = (dctSqrt2 * p0 + 128) >> 8; + v1 = (dctSqrt2 * p4 + 128) >> 8; + v2 = p2; + v3 = p6; + v4 = (dctSqrt1d2 * (p1 - p7) + 128) >> 8; + v7 = (dctSqrt1d2 * (p1 + p7) + 128) >> 8; + v5 = p3 << 4; + v6 = p5 << 4; + + // stage 3 + v0 = (v0 + v1 + 1) >> 1; + v1 = v0 - v1; + t = (v2 * dctSin6 + v3 * dctCos6 + 128) >> 8; + v2 = (v2 * dctCos6 - v3 * dctSin6 + 128) >> 8; + v3 = t; + v4 = (v4 + v6 + 1) >> 1; + v6 = v4 - v6; + v7 = (v7 + v5 + 1) >> 1; + v5 = v7 - v5; + + // stage 2 + v0 = (v0 + v3 + 1) >> 1; + v3 = v0 - v3; + v1 = (v1 + v2 + 1) >> 1; + v2 = v1 - v2; + t = (v4 * dctSin3 + v7 * dctCos3 + 2048) >> 12; + v4 = (v4 * dctCos3 - v7 * dctSin3 + 2048) >> 12; + v7 = t; + t = (v5 * dctSin1 + v6 * dctCos1 + 2048) >> 12; + v5 = (v5 * dctCos1 - v6 * dctSin1 + 2048) >> 12; + v6 = t; + + // stage 1 + p[row] = v0 + v7; + p[row + 7] = v0 - v7; + p[row + 1] = v1 + v6; + p[row + 6] = v1 - v6; + p[row + 2] = v2 + v5; + p[row + 5] = v2 - v5; + p[row + 3] = v3 + v4; + p[row + 4] = v3 - v4; + } + + // inverse DCT on columns + for (var col = 0; col < 8; ++col) { + p0 = p[col]; + p1 = p[col + 8]; + p2 = p[col + 16]; + p3 = p[col + 24]; + p4 = p[col + 32]; + p5 = p[col + 40]; + p6 = p[col + 48]; + p7 = p[col + 56]; + + // check for all-zero AC coefficients + if ((p1 | p2 | p3 | p4 | p5 | p6 | p7) === 0) { + t = (dctSqrt2 * p0 + 8192) >> 14; + // convert to 8 bit + t = (t < -2040) ? 0 : (t >= 2024) ? 255 : (t + 2056) >> 4; + blockData[blockBufferOffset + col] = t; + blockData[blockBufferOffset + col + 8] = t; + blockData[blockBufferOffset + col + 16] = t; + blockData[blockBufferOffset + col + 24] = t; + blockData[blockBufferOffset + col + 32] = t; + blockData[blockBufferOffset + col + 40] = t; + blockData[blockBufferOffset + col + 48] = t; + blockData[blockBufferOffset + col + 56] = t; + continue; + } + + // stage 4 + v0 = (dctSqrt2 * p0 + 2048) >> 12; + v1 = (dctSqrt2 * p4 + 2048) >> 12; + v2 = p2; + v3 = p6; + v4 = (dctSqrt1d2 * (p1 - p7) + 2048) >> 12; + v7 = (dctSqrt1d2 * (p1 + p7) + 2048) >> 12; + v5 = p3; + v6 = p5; + + // stage 3 + // Shift v0 by 128.5 << 5 here, so we don't need to shift p0...p7 when + // converting to UInt8 range later. + v0 = ((v0 + v1 + 1) >> 1) + 4112; + v1 = v0 - v1; + t = (v2 * dctSin6 + v3 * dctCos6 + 2048) >> 12; + v2 = (v2 * dctCos6 - v3 * dctSin6 + 2048) >> 12; + v3 = t; + v4 = (v4 + v6 + 1) >> 1; + v6 = v4 - v6; + v7 = (v7 + v5 + 1) >> 1; + v5 = v7 - v5; + + // stage 2 + v0 = (v0 + v3 + 1) >> 1; + v3 = v0 - v3; + v1 = (v1 + v2 + 1) >> 1; + v2 = v1 - v2; + t = (v4 * dctSin3 + v7 * dctCos3 + 2048) >> 12; + v4 = (v4 * dctCos3 - v7 * dctSin3 + 2048) >> 12; + v7 = t; + t = (v5 * dctSin1 + v6 * dctCos1 + 2048) >> 12; + v5 = (v5 * dctCos1 - v6 * dctSin1 + 2048) >> 12; + v6 = t; + + // stage 1 + p0 = v0 + v7; + p7 = v0 - v7; + p1 = v1 + v6; + p6 = v1 - v6; + p2 = v2 + v5; + p5 = v2 - v5; + p3 = v3 + v4; + p4 = v3 - v4; + + // convert to 8-bit integers + p0 = (p0 < 16) ? 0 : (p0 >= 4080) ? 255 : p0 >> 4; + p1 = (p1 < 16) ? 0 : (p1 >= 4080) ? 255 : p1 >> 4; + p2 = (p2 < 16) ? 0 : (p2 >= 4080) ? 255 : p2 >> 4; + p3 = (p3 < 16) ? 0 : (p3 >= 4080) ? 255 : p3 >> 4; + p4 = (p4 < 16) ? 0 : (p4 >= 4080) ? 255 : p4 >> 4; + p5 = (p5 < 16) ? 0 : (p5 >= 4080) ? 255 : p5 >> 4; + p6 = (p6 < 16) ? 0 : (p6 >= 4080) ? 255 : p6 >> 4; + p7 = (p7 < 16) ? 0 : (p7 >= 4080) ? 255 : p7 >> 4; + + // store block data + blockData[blockBufferOffset + col] = p0; + blockData[blockBufferOffset + col + 8] = p1; + blockData[blockBufferOffset + col + 16] = p2; + blockData[blockBufferOffset + col + 24] = p3; + blockData[blockBufferOffset + col + 32] = p4; + blockData[blockBufferOffset + col + 40] = p5; + blockData[blockBufferOffset + col + 48] = p6; + blockData[blockBufferOffset + col + 56] = p7; + } + } + + function buildComponentData(frame, component) { + var blocksPerLine = component.blocksPerLine; + var blocksPerColumn = component.blocksPerColumn; + var computationBuffer = new Int16Array(64); + + for (var blockRow = 0; blockRow < blocksPerColumn; blockRow++) { + for (var blockCol = 0; blockCol < blocksPerLine; blockCol++) { + var offset = getBlockBufferOffset(component, blockRow, blockCol); + quantizeAndInverse(component, offset, computationBuffer); + } + } + return component.blockData; + } + + function clamp0to255(a) { + return a <= 0 ? 0 : a >= 255 ? 255 : a; + } + + constructor.prototype = { + parse: function parse(data) { + + function readUint16() { + var value = (data[offset] << 8) | data[offset + 1]; + offset += 2; + return value; + } + + function readDataBlock() { + var length = readUint16(); + var array = data.subarray(offset, offset + length - 2); + offset += array.length; + return array; + } + + function prepareComponents(frame) { + var mcusPerLine = Math.ceil(frame.samplesPerLine / 8 / frame.maxH); + var mcusPerColumn = Math.ceil(frame.scanLines / 8 / frame.maxV); + for (var i = 0; i < frame.components.length; i++) { + component = frame.components[i]; + var blocksPerLine = Math.ceil(Math.ceil(frame.samplesPerLine / 8) * + component.h / frame.maxH); + var blocksPerColumn = Math.ceil(Math.ceil(frame.scanLines / 8) * + component.v / frame.maxV); + var blocksPerLineForMcu = mcusPerLine * component.h; + var blocksPerColumnForMcu = mcusPerColumn * component.v; + + var blocksBufferSize = 64 * blocksPerColumnForMcu * + (blocksPerLineForMcu + 1); + component.blockData = new Int16Array(blocksBufferSize); + component.blocksPerLine = blocksPerLine; + component.blocksPerColumn = blocksPerColumn; + } + frame.mcusPerLine = mcusPerLine; + frame.mcusPerColumn = mcusPerColumn; + } + + var offset = 0, length = data.length; + var jfif = null; + var adobe = null; + var pixels = null; + var frame, resetInterval; + var quantizationTables = []; + var huffmanTablesAC = [], huffmanTablesDC = []; + var fileMarker = readUint16(); + if (fileMarker !== 0xFFD8) { // SOI (Start of Image) + throw 'SOI not found'; + } + + fileMarker = readUint16(); + while (fileMarker !== 0xFFD9) { // EOI (End of image) + var i, j, l; + switch(fileMarker) { + case 0xFFE0: // APP0 (Application Specific) + case 0xFFE1: // APP1 + case 0xFFE2: // APP2 + case 0xFFE3: // APP3 + case 0xFFE4: // APP4 + case 0xFFE5: // APP5 + case 0xFFE6: // APP6 + case 0xFFE7: // APP7 + case 0xFFE8: // APP8 + case 0xFFE9: // APP9 + case 0xFFEA: // APP10 + case 0xFFEB: // APP11 + case 0xFFEC: // APP12 + case 0xFFED: // APP13 + case 0xFFEE: // APP14 + case 0xFFEF: // APP15 + case 0xFFFE: // COM (Comment) + var appData = readDataBlock(); + + if (fileMarker === 0xFFE0) { + if (appData[0] === 0x4A && appData[1] === 0x46 && + appData[2] === 0x49 && appData[3] === 0x46 && + appData[4] === 0) { // 'JFIF\x00' + jfif = { + version: { major: appData[5], minor: appData[6] }, + densityUnits: appData[7], + xDensity: (appData[8] << 8) | appData[9], + yDensity: (appData[10] << 8) | appData[11], + thumbWidth: appData[12], + thumbHeight: appData[13], + thumbData: appData.subarray(14, 14 + + 3 * appData[12] * appData[13]) + }; + } + } + // TODO APP1 - Exif + if (fileMarker === 0xFFEE) { + if (appData[0] === 0x41 && appData[1] === 0x64 && + appData[2] === 0x6F && appData[3] === 0x62 && + appData[4] === 0x65 && appData[5] === 0) { // 'Adobe\x00' + adobe = { + version: appData[6], + flags0: (appData[7] << 8) | appData[8], + flags1: (appData[9] << 8) | appData[10], + transformCode: appData[11] + }; + } + } + break; + + case 0xFFDB: // DQT (Define Quantization Tables) + var quantizationTablesLength = readUint16(); + var quantizationTablesEnd = quantizationTablesLength + offset - 2; + var z; + while (offset < quantizationTablesEnd) { + var quantizationTableSpec = data[offset++]; + var tableData = new Uint16Array(64); + if ((quantizationTableSpec >> 4) === 0) { // 8 bit values + for (j = 0; j < 64; j++) { + z = dctZigZag[j]; + tableData[z] = data[offset++]; + } + } else if ((quantizationTableSpec >> 4) === 1) { //16 bit + for (j = 0; j < 64; j++) { + z = dctZigZag[j]; + tableData[z] = readUint16(); + } + } else { + throw 'DQT: invalid table spec'; + } + quantizationTables[quantizationTableSpec & 15] = tableData; + } + break; + + case 0xFFC0: // SOF0 (Start of Frame, Baseline DCT) + case 0xFFC1: // SOF1 (Start of Frame, Extended DCT) + case 0xFFC2: // SOF2 (Start of Frame, Progressive DCT) + if (frame) { + throw 'Only single frame JPEGs supported'; + } + readUint16(); // skip data length + frame = {}; + frame.extended = (fileMarker === 0xFFC1); + frame.progressive = (fileMarker === 0xFFC2); + frame.precision = data[offset++]; + frame.scanLines = readUint16(); + frame.samplesPerLine = readUint16(); + frame.components = []; + frame.componentIds = {}; + var componentsCount = data[offset++], componentId; + var maxH = 0, maxV = 0; + for (i = 0; i < componentsCount; i++) { + componentId = data[offset]; + var h = data[offset + 1] >> 4; + var v = data[offset + 1] & 15; + if (maxH < h) { + maxH = h; + } + if (maxV < v) { + maxV = v; + } + var qId = data[offset + 2]; + l = frame.components.push({ + h: h, + v: v, + quantizationTable: quantizationTables[qId] + }); + frame.componentIds[componentId] = l - 1; + offset += 3; + } + frame.maxH = maxH; + frame.maxV = maxV; + prepareComponents(frame); + break; + + case 0xFFC4: // DHT (Define Huffman Tables) + var huffmanLength = readUint16(); + for (i = 2; i < huffmanLength;) { + var huffmanTableSpec = data[offset++]; + var codeLengths = new Uint8Array(16); + var codeLengthSum = 0; + for (j = 0; j < 16; j++, offset++) { + codeLengthSum += (codeLengths[j] = data[offset]); + } + var huffmanValues = new Uint8Array(codeLengthSum); + for (j = 0; j < codeLengthSum; j++, offset++) { + huffmanValues[j] = data[offset]; + } + i += 17 + codeLengthSum; + + ((huffmanTableSpec >> 4) === 0 ? + huffmanTablesDC : huffmanTablesAC)[huffmanTableSpec & 15] = + buildHuffmanTable(codeLengths, huffmanValues); + } + break; + + case 0xFFDD: // DRI (Define Restart Interval) + readUint16(); // skip data length + resetInterval = readUint16(); + break; + + case 0xFFDA: // SOS (Start of Scan) + var scanLength = readUint16(); + var selectorsCount = data[offset++]; + var components = [], component; + for (i = 0; i < selectorsCount; i++) { + var componentIndex = frame.componentIds[data[offset++]]; + component = frame.components[componentIndex]; + var tableSpec = data[offset++]; + component.huffmanTableDC = huffmanTablesDC[tableSpec >> 4]; + component.huffmanTableAC = huffmanTablesAC[tableSpec & 15]; + components.push(component); + } + var spectralStart = data[offset++]; + var spectralEnd = data[offset++]; + var successiveApproximation = data[offset++]; + var processed = decodeScan(data, offset, + frame, components, resetInterval, + spectralStart, spectralEnd, + successiveApproximation >> 4, successiveApproximation & 15); + offset += processed; + break; + default: + if (data[offset - 3] === 0xFF && + data[offset - 2] >= 0xC0 && data[offset - 2] <= 0xFE) { + // could be incorrect encoding -- last 0xFF byte of the previous + // block was eaten by the encoder + offset -= 3; + break; + } + throw 'unknown JPEG marker ' + fileMarker.toString(16); + } + fileMarker = readUint16(); + } + + this.width = frame.samplesPerLine; + this.height = frame.scanLines; + this.jfif = jfif; + this.adobe = adobe; + this.components = []; + for (i = 0; i < frame.components.length; i++) { + component = frame.components[i]; + this.components.push({ + output: buildComponentData(frame, component), + scaleX: component.h / frame.maxH, + scaleY: component.v / frame.maxV, + blocksPerLine: component.blocksPerLine, + blocksPerColumn: component.blocksPerColumn + }); + } + this.numComponents = this.components.length; + }, + + _getLinearizedBlockData: function getLinearizedBlockData(width, height) { + var scaleX = this.width / width, scaleY = this.height / height; + + var component, componentScaleX, componentScaleY, blocksPerScanline; + var x, y, i, j, k; + var index; + var offset = 0; + var output; + var numComponents = this.components.length; + var dataLength = width * height * numComponents; + var data = new Uint8Array(dataLength); + var xScaleBlockOffset = new Uint32Array(width); + var mask3LSB = 0xfffffff8; // used to clear the 3 LSBs + + for (i = 0; i < numComponents; i++) { + component = this.components[i]; + componentScaleX = component.scaleX * scaleX; + componentScaleY = component.scaleY * scaleY; + offset = i; + output = component.output; + blocksPerScanline = (component.blocksPerLine + 1) << 3; + // precalculate the xScaleBlockOffset + for (x = 0; x < width; x++) { + j = 0 | (x * componentScaleX); + xScaleBlockOffset[x] = ((j & mask3LSB) << 3) | (j & 7); + } + // linearize the blocks of the component + for (y = 0; y < height; y++) { + j = 0 | (y * componentScaleY); + index = blocksPerScanline * (j & mask3LSB) | ((j & 7) << 3); + for (x = 0; x < width; x++) { + data[offset] = output[index + xScaleBlockOffset[x]]; + offset += numComponents; + } + } + } + + // decodeTransform will contains pairs of multiplier (-256..256) and + // additive + var transform = this.decodeTransform; + if (transform) { + for (i = 0; i < dataLength;) { + for (j = 0, k = 0; j < numComponents; j++, i++, k += 2) { + data[i] = ((data[i] * transform[k]) >> 8) + transform[k + 1]; + } + } + } + return data; + }, + + _isColorConversionNeeded: function isColorConversionNeeded() { + if (this.adobe && this.adobe.transformCode) { + // The adobe transform marker overrides any previous setting + return true; + } else if (this.numComponents === 3) { + return true; + } else { + return false; + } + }, + + _convertYccToRgb: function convertYccToRgb(data) { + var Y, Cb, Cr; + for (var i = 0, length = data.length; i < length; i += 3) { + Y = data[i ]; + Cb = data[i + 1]; + Cr = data[i + 2]; + data[i ] = clamp0to255(Y - 179.456 + 1.402 * Cr); + data[i + 1] = clamp0to255(Y + 135.459 - 0.344 * Cb - 0.714 * Cr); + data[i + 2] = clamp0to255(Y - 226.816 + 1.772 * Cb); + } + return data; + }, + + _convertYcckToRgb: function convertYcckToRgb(data) { + var Y, Cb, Cr, k, CbCb, CbCr, CbY, Cbk, CrCr, Crk, CrY, YY, Yk, kk; + var offset = 0; + for (var i = 0, length = data.length; i < length; i += 4) { + Y = data[i]; + Cb = data[i + 1]; + Cr = data[i + 2]; + k = data[i + 3]; + + CbCb = Cb * Cb; + CbCr = Cb * Cr; + CbY = Cb * Y; + Cbk = Cb * k; + CrCr = Cr * Cr; + Crk = Cr * k; + CrY = Cr * Y; + YY = Y * Y; + Yk = Y * k; + kk = k * k; + + var r = - 122.67195406894 - + 6.60635669420364e-5 * CbCb + 0.000437130475926232 * CbCr - + 5.4080610064599e-5* CbY + 0.00048449797120281* Cbk - + 0.154362151871126 * Cb - 0.000957964378445773 * CrCr + + 0.000817076911346625 * CrY - 0.00477271405408747 * Crk + + 1.53380253221734 * Cr + 0.000961250184130688 * YY - + 0.00266257332283933 * Yk + 0.48357088451265 * Y - + 0.000336197177618394 * kk + 0.484791561490776 * k; + + var g = 107.268039397724 + + 2.19927104525741e-5 * CbCb - 0.000640992018297945 * CbCr + + 0.000659397001245577* CbY + 0.000426105652938837* Cbk - + 0.176491792462875 * Cb - 0.000778269941513683 * CrCr + + 0.00130872261408275 * CrY + 0.000770482631801132 * Crk - + 0.151051492775562 * Cr + 0.00126935368114843 * YY - + 0.00265090189010898 * Yk + 0.25802910206845 * Y - + 0.000318913117588328 * kk - 0.213742400323665 * k; + + var b = - 20.810012546947 - + 0.000570115196973677 * CbCb - 2.63409051004589e-5 * CbCr + + 0.0020741088115012* CbY - 0.00288260236853442* Cbk + + 0.814272968359295 * Cb - 1.53496057440975e-5 * CrCr - + 0.000132689043961446 * CrY + 0.000560833691242812 * Crk - + 0.195152027534049 * Cr + 0.00174418132927582 * YY - + 0.00255243321439347 * Yk + 0.116935020465145 * Y - + 0.000343531996510555 * kk + 0.24165260232407 * k; + + data[offset++] = clamp0to255(r); + data[offset++] = clamp0to255(g); + data[offset++] = clamp0to255(b); + } + return data; + }, + + _convertYcckToCmyk: function convertYcckToCmyk(data) { + var Y, Cb, Cr; + for (var i = 0, length = data.length; i < length; i += 4) { + Y = data[i]; + Cb = data[i + 1]; + Cr = data[i + 2]; + data[i ] = clamp0to255(434.456 - Y - 1.402 * Cr); + data[i + 1] = clamp0to255(119.541 - Y + 0.344 * Cb + 0.714 * Cr); + data[i + 2] = clamp0to255(481.816 - Y - 1.772 * Cb); + // K in data[i + 3] is unchanged + } + return data; + }, + + _convertCmykToRgb: function convertCmykToRgb(data) { + var c, m, y, k; + var offset = 0; + var min = -255 * 255 * 255; + var scale = 1 / 255 / 255; + for (var i = 0, length = data.length; i < length; i += 4) { + c = data[i]; + m = data[i + 1]; + y = data[i + 2]; + k = data[i + 3]; + + var r = + c * (-4.387332384609988 * c + 54.48615194189176 * m + + 18.82290502165302 * y + 212.25662451639585 * k - + 72734.4411664936) + + m * (1.7149763477362134 * m - 5.6096736904047315 * y - + 17.873870861415444 * k - 1401.7366389350734) + + y * (-2.5217340131683033 * y - 21.248923337353073 * k + + 4465.541406466231) - + k * (21.86122147463605 * k + 48317.86113160301); + var g = + c * (8.841041422036149 * c + 60.118027045597366 * m + + 6.871425592049007 * y + 31.159100130055922 * k - + 20220.756542821975) + + m * (-15.310361306967817 * m + 17.575251261109482 * y + + 131.35250912493976 * k - 48691.05921601825) + + y * (4.444339102852739 * y + 9.8632861493405 * k - + 6341.191035517494) - + k * (20.737325471181034 * k + 47890.15695978492); + var b = + c * (0.8842522430003296 * c + 8.078677503112928 * m + + 30.89978309703729 * y - 0.23883238689178934 * k - + 3616.812083916688) + + m * (10.49593273432072 * m + 63.02378494754052 * y + + 50.606957656360734 * k - 28620.90484698408) + + y * (0.03296041114873217 * y + 115.60384449646641 * k - + 49363.43385999684) - + k * (22.33816807309886 * k + 45932.16563550634); + + data[offset++] = r >= 0 ? 255 : r <= min ? 0 : 255 + r * scale | 0; + data[offset++] = g >= 0 ? 255 : g <= min ? 0 : 255 + g * scale | 0; + data[offset++] = b >= 0 ? 255 : b <= min ? 0 : 255 + b * scale | 0; + } + return data; + }, + + getData: function getData(width, height, forceRGBoutput) { + if (this.numComponents > 4) { + throw 'Unsupported color mode'; + } + // type of data: Uint8Array(width * height * numComponents) + var data = this._getLinearizedBlockData(width, height); + + if (this.numComponents === 3) { + return this._convertYccToRgb(data); + } else if (this.numComponents === 4) { + if (this._isColorConversionNeeded()) { + if (forceRGBoutput) { + return this._convertYcckToRgb(data); + } else { + return this._convertYcckToCmyk(data); + } + } else if (forceRGBoutput) { + return this._convertCmykToRgb(data); + } + } + return data; + } + }; + + return constructor; +})(); + + var JpxImage = (function JpxImageClosure() { // Table E.1 var SubbandsGainLog2 = { @@ -35220,70 +35156,125 @@ var JpxImage = (function JpxImageClosure() { this.failOnCorruptedImage = false; } JpxImage.prototype = { - load: function JpxImage_load(url) { - var xhr = new XMLHttpRequest(); - xhr.open('GET', url, true); - xhr.responseType = 'arraybuffer'; - xhr.onload = (function() { - // TODO catch parse error - var data = new Uint8Array(xhr.response || xhr.mozResponseArrayBuffer); - this.parse(data); - if (this.onload) - this.onload(); - }).bind(this); - xhr.send(null); - }, parse: function JpxImage_parse(data) { - function readUint(data, offset, bytes) { - var n = 0; - for (var i = 0; i < bytes; i++) - n = n * 256 + (data[offset + i] & 0xFF); - return n; + + var head = readUint16(data, 0); + // No box header, immediate start of codestream (SOC) + if (head === 0xFF4F) { + this.parseCodestream(data, 0, data.length); + return; } + var position = 0, length = data.length; while (position < length) { var headerSize = 8; - var lbox = readUint(data, position, 4); - var tbox = readUint(data, position + 4, 4); + var lbox = readUint32(data, position); + var tbox = readUint32(data, position + 4); position += headerSize; - if (lbox == 1) { - lbox = readUint(data, position, 8); + if (lbox === 1) { + // XLBox: read UInt64 according to spec. + // JavaScript's int precision of 53 bit should be sufficient here. + lbox = readUint32(data, position) * 4294967296 + + readUint32(data, position + 4); position += 8; headerSize += 8; } - if (lbox === 0) + if (lbox === 0) { lbox = length - position + headerSize; - if (lbox < headerSize) - error('JPX error: Invalid box field size'); + } + if (lbox < headerSize) { + throw new Error('JPX Error: Invalid box field size'); + } var dataLength = lbox - headerSize; var jumpDataLength = true; switch (tbox) { - case 0x6A501A1A: // 'jP\032\032' - // TODO - break; case 0x6A703268: // 'jp2h' jumpDataLength = false; // parsing child boxes break; case 0x636F6C72: // 'colr' - // TODO + // Colorspaces are not used, the CS from the PDF is used. + var method = data[position]; + var precedence = data[position + 1]; + var approximation = data[position + 2]; + if (method === 1) { + // enumerated colorspace + var colorspace = readUint32(data, position + 3); + switch (colorspace) { + case 16: // this indicates a sRGB colorspace + case 17: // this indicates a grayscale colorspace + case 18: // this indicates a YUV colorspace + break; + default: + warn('Unknown colorspace ' + colorspace); + break; + } + } else if (method === 2) { + info('ICC profile not supported'); + } break; case 0x6A703263: // 'jp2c' this.parseCodestream(data, position, position + dataLength); break; + case 0x6A502020: // 'jP\024\024' + if (0x0d0a870a !== readUint32(data, position)) { + warn('Invalid JP2 signature'); + } + break; + // The following header types are valid but currently not used: + case 0x6A501A1A: // 'jP\032\032' + case 0x66747970: // 'ftyp' + case 0x72726571: // 'rreq' + case 0x72657320: // 'res ' + case 0x69686472: // 'ihdr' + break; + default: + var headerType = String.fromCharCode((tbox >> 24) & 0xFF, + (tbox >> 16) & 0xFF, + (tbox >> 8) & 0xFF, + tbox & 0xFF); + warn('Unsupported header type ' + tbox + ' (' + headerType + ')'); + break; } - if (jumpDataLength) + if (jumpDataLength) { position += dataLength; + } } }, + parseImageProperties: function JpxImage_parseImageProperties(stream) { + var newByte = stream.getByte(); + while (newByte >= 0) { + var oldByte = newByte; + newByte = stream.getByte(); + var code = (oldByte << 8) | newByte; + // Image and tile size (SIZ) + if (code === 0xFF51) { + stream.skip(4); + var Xsiz = stream.getInt32() >>> 0; // Byte 4 + var Ysiz = stream.getInt32() >>> 0; // Byte 8 + var XOsiz = stream.getInt32() >>> 0; // Byte 12 + var YOsiz = stream.getInt32() >>> 0; // Byte 16 + stream.skip(16); + var Csiz = stream.getUint16(); // Byte 36 + this.width = Xsiz - XOsiz; + this.height = Ysiz - YOsiz; + this.componentsCount = Csiz; + // Results are always returned as Uint8Arrays + this.bitsPerComponent = 8; + return; + } + } + throw new Error('JPX Error: No size marker found in JPX stream'); + }, parseCodestream: function JpxImage_parseCodestream(data, start, end) { var context = {}; try { + var doNotRecover = false; var position = start; - while (position < end) { + while (position + 1 < end) { var code = readUint16(data, position); position += 2; - var length = 0, j; + var length = 0, j, sqcd, spqcds, spqcdSize, scalarExpounded, tile; switch (code) { case 0xFF4F: // Start of codestream (SOC) context.mainHeader = true; @@ -35321,12 +35312,16 @@ var JpxImage = (function JpxImageClosure() { context.QCC = []; context.COC = []; break; + case 0xFF55: // Tile-part lengths, main header (TLM) + var Ltlm = readUint16(data, position); // Marker segment length + // Skip tile length markers + position += Ltlm; + break; case 0xFF5C: // Quantization default (QCD) length = readUint16(data, position); var qcd = {}; j = position + 2; - var sqcd = data[j++]; - var spqcdSize, scalarExpounded; + sqcd = data[j++]; switch (sqcd & 0x1F) { case 0: spqcdSize = 8; @@ -35341,15 +35336,15 @@ var JpxImage = (function JpxImageClosure() { scalarExpounded = true; break; default: - throw 'Invalid SQcd value ' + sqcd; + throw new Error('JPX Error: Invalid SQcd value ' + sqcd); } - qcd.noQuantization = spqcdSize == 8; + qcd.noQuantization = (spqcdSize === 8); qcd.scalarExpounded = scalarExpounded; qcd.guardBits = sqcd >> 5; - var spqcds = []; + spqcds = []; while (j < length + position) { var spqcd = {}; - if (spqcdSize == 8) { + if (spqcdSize === 8) { spqcd.epsilon = data[j++] >> 3; spqcd.mu = 0; } else { @@ -35360,9 +35355,9 @@ var JpxImage = (function JpxImageClosure() { spqcds.push(spqcd); } qcd.SPqcds = spqcds; - if (context.mainHeader) + if (context.mainHeader) { context.QCD = qcd; - else { + } else { context.currentTile.QCD = qcd; context.currentTile.QCC = []; } @@ -35372,14 +35367,13 @@ var JpxImage = (function JpxImageClosure() { var qcc = {}; j = position + 2; var cqcc; - if (context.SIZ.Csiz < 257) + if (context.SIZ.Csiz < 257) { cqcc = data[j++]; - else { + } else { cqcc = readUint16(data, j); j += 2; } - var sqcd = data[j++]; - var spqcdSize, scalarExpounded; + sqcd = data[j++]; switch (sqcd & 0x1F) { case 0: spqcdSize = 8; @@ -35394,15 +35388,15 @@ var JpxImage = (function JpxImageClosure() { scalarExpounded = true; break; default: - throw 'Invalid SQcd value ' + sqcd; + throw new Error('JPX Error: Invalid SQcd value ' + sqcd); } - qcc.noQuantization = spqcdSize == 8; + qcc.noQuantization = (spqcdSize === 8); qcc.scalarExpounded = scalarExpounded; qcc.guardBits = sqcd >> 5; - var spqcds = []; - while (j < length + position) { - var spqcd = {}; - if (spqcdSize == 8) { + spqcds = []; + while (j < (length + position)) { + spqcd = {}; + if (spqcdSize === 8) { spqcd.epsilon = data[j++] >> 3; spqcd.mu = 0; } else { @@ -35413,10 +35407,11 @@ var JpxImage = (function JpxImageClosure() { spqcds.push(spqcd); } qcc.SPqcds = spqcds; - if (context.mainHeader) + if (context.mainHeader) { context.QCC[cqcc] = qcc; - else + } else { context.currentTile.QCC[cqcc] = qcc; + } break; case 0xFF52: // Coding style default (COD) length = readUint16(data, position); @@ -35426,7 +35421,6 @@ var JpxImage = (function JpxImageClosure() { cod.entropyCoderWithCustomPrecincts = !!(scod & 1); cod.sopMarkerUsed = !!(scod & 2); cod.ephMarkerUsed = !!(scod & 4); - var codingStyle = {}; cod.progressionOrder = data[j++]; cod.layersCount = readUint16(data, j); j += 2; @@ -35442,11 +35436,11 @@ var JpxImage = (function JpxImageClosure() { cod.verticalyStripe = !!(blockStyle & 8); cod.predictableTermination = !!(blockStyle & 16); cod.segmentationSymbolUsed = !!(blockStyle & 32); - cod.transformation = data[j++]; + cod.reversibleTransformation = data[j++]; if (cod.entropyCoderWithCustomPrecincts) { - var precinctsSizes = {}; + var precinctsSizes = []; while (j < length + position) { - var precinctsSize = data[j]; + var precinctsSize = data[j++]; precinctsSizes.push({ PPx: precinctsSize & 0xF, PPy: precinctsSize >> 4 @@ -35454,25 +35448,43 @@ var JpxImage = (function JpxImageClosure() { } cod.precinctsSizes = precinctsSizes; } - - if (cod.sopMarkerUsed || cod.ephMarkerUsed || - cod.selectiveArithmeticCodingBypass || - cod.resetContextProbabilities || - cod.terminationOnEachCodingPass || - cod.verticalyStripe || cod.predictableTermination) - throw 'Unsupported COD options: ' + - globalScope.JSON.stringify(cod); - - if (context.mainHeader) + var unsupported = []; + if (cod.sopMarkerUsed) { + unsupported.push('sopMarkerUsed'); + } + if (cod.ephMarkerUsed) { + unsupported.push('ephMarkerUsed'); + } + if (cod.selectiveArithmeticCodingBypass) { + unsupported.push('selectiveArithmeticCodingBypass'); + } + if (cod.resetContextProbabilities) { + unsupported.push('resetContextProbabilities'); + } + if (cod.terminationOnEachCodingPass) { + unsupported.push('terminationOnEachCodingPass'); + } + if (cod.verticalyStripe) { + unsupported.push('verticalyStripe'); + } + if (cod.predictableTermination) { + unsupported.push('predictableTermination'); + } + if (unsupported.length > 0) { + doNotRecover = true; + throw new Error('JPX Error: Unsupported COD options (' + + unsupported.join(', ') + ')'); + } + if (context.mainHeader) { context.COD = cod; - else { + } else { context.currentTile.COD = cod; context.currentTile.COC = []; } break; case 0xFF90: // Start of tile-part (SOT) length = readUint16(data, position); - var tile = {}; + tile = {}; tile.index = readUint16(data, position + 2); tile.length = readUint32(data, position + 4); tile.dataEnd = tile.length + position - 2; @@ -35490,7 +35502,7 @@ var JpxImage = (function JpxImageClosure() { context.currentTile = tile; break; case 0xFF93: // Start of data (SOD) - var tile = context.currentTile; + tile = context.currentTile; if (tile.partIndex === 0) { initializeTile(context, tile.index); buildPackets(context); @@ -35498,23 +35510,27 @@ var JpxImage = (function JpxImageClosure() { // moving to the end of the data length = tile.dataEnd - position; - parseTilePackets(context, data, position, length); break; case 0xFF64: // Comment (COM) length = readUint16(data, position); // skipping content break; + case 0xFF53: // Coding style component (COC) + throw new Error('JPX Error: Codestream code 0xFF53 (COC) is ' + + 'not implemented'); default: - throw 'Unknown codestream code: ' + code.toString(16); + throw new Error('JPX Error: Unknown codestream code: ' + + code.toString(16)); } position += length; } } catch (e) { - if (this.failOnCorruptedImage) - error('JPX error: ' + e); - else - warn('JPX error: ' + e + '. Trying to recover'); + if (doNotRecover || this.failOnCorruptedImage) { + throw e; + } else { + warn('Trying to recover from ' + e.message); + } } this.tiles = transformComponents(context); this.width = context.SIZ.Xsiz - context.SIZ.XOsiz; @@ -35522,21 +35538,6 @@ var JpxImage = (function JpxImageClosure() { this.componentsCount = context.SIZ.Csiz; } }; - function readUint32(data, offset) { - return (data[offset] << 24) | (data[offset + 1] << 16) | - (data[offset + 2] << 8) | data[offset + 3]; - } - function readUint16(data, offset) { - return (data[offset] << 8) | data[offset + 1]; - } - function log2(x) { - var n = 1, i = 0; - while (x > n) { - n <<= 1; - i++; - } - return i; - } function calculateComponentDimensions(component, siz) { // Section B.2 Component mapping component.x0 = Math.ceil(siz.XOsiz / component.XRsiz); @@ -35549,12 +35550,12 @@ var JpxImage = (function JpxImageClosure() { function calculateTileGrids(context, components) { var siz = context.SIZ; // Section B.3 Division into tile and tile-components - var tiles = []; + var tile, tiles = []; var numXtiles = Math.ceil((siz.Xsiz - siz.XTOsiz) / siz.XTsiz); var numYtiles = Math.ceil((siz.Ysiz - siz.YTOsiz) / siz.YTsiz); for (var q = 0; q < numYtiles; q++) { for (var p = 0; p < numXtiles; p++) { - var tile = {}; + tile = {}; tile.tx0 = Math.max(siz.XTOsiz + p * siz.XTsiz, siz.XOsiz); tile.ty0 = Math.max(siz.YTOsiz + q * siz.YTsiz, siz.YOsiz); tile.tx1 = Math.min(siz.XTOsiz + (p + 1) * siz.XTsiz, siz.Xsiz); @@ -35570,9 +35571,9 @@ var JpxImage = (function JpxImageClosure() { var componentsCount = siz.Csiz; for (var i = 0, ii = componentsCount; i < ii; i++) { var component = components[i]; - var tileComponents = []; for (var j = 0, jj = tiles.length; j < jj; j++) { - var tileComponent = {}, tile = tiles[j]; + var tileComponent = {}; + tile = tiles[j]; tileComponent.tcx0 = Math.ceil(tile.tx0 / component.XRsiz); tileComponent.tcy0 = Math.ceil(tile.ty0 / component.YRsiz); tileComponent.tcx1 = Math.ceil(tile.tx1 / component.XRsiz); @@ -35594,27 +35595,27 @@ var JpxImage = (function JpxImageClosure() { result.PPy = codOrCoc.precinctsSizes[r].PPy; } // calculate codeblock size as described in section B.7 - result.xcb_ = r > 0 ? Math.min(codOrCoc.xcb, result.PPx - 1) : - Math.min(codOrCoc.xcb, result.PPx); - result.ycb_ = r > 0 ? Math.min(codOrCoc.ycb, result.PPy - 1) : - Math.min(codOrCoc.ycb, result.PPy); + result.xcb_ = (r > 0 ? Math.min(codOrCoc.xcb, result.PPx - 1) : + Math.min(codOrCoc.xcb, result.PPx)); + result.ycb_ = (r > 0 ? Math.min(codOrCoc.ycb, result.PPy - 1) : + Math.min(codOrCoc.ycb, result.PPy)); return result; } function buildPrecincts(context, resolution, dimensions) { // Section B.6 Division resolution to precincts var precinctWidth = 1 << dimensions.PPx; var precinctHeight = 1 << dimensions.PPy; - var numprecinctswide = resolution.trx1 > resolution.trx0 ? + var numprecinctswide = (resolution.trx1 > resolution.trx0 ? Math.ceil(resolution.trx1 / precinctWidth) - - Math.floor(resolution.trx0 / precinctWidth) : 0; - var numprecinctshigh = resolution.try1 > resolution.try0 ? + Math.floor(resolution.trx0 / precinctWidth) : 0); + var numprecinctshigh = (resolution.try1 > resolution.try0 ? Math.ceil(resolution.try1 / precinctHeight) - - Math.floor(resolution.try0 / precinctHeight) : 0; + Math.floor(resolution.try0 / precinctHeight) : 0); var numprecincts = numprecinctswide * numprecinctshigh; var precinctXOffset = Math.floor(resolution.trx0 / precinctWidth) * - precinctWidth; + precinctWidth; var precinctYOffset = Math.floor(resolution.try0 / precinctHeight) * - precinctHeight; + precinctHeight; resolution.precinctParameters = { precinctXOffset: precinctXOffset, precinctYOffset: precinctYOffset, @@ -35631,16 +35632,17 @@ var JpxImage = (function JpxImageClosure() { var ycb_ = dimensions.ycb_; var codeblockWidth = 1 << xcb_; var codeblockHeight = 1 << ycb_; - var cbx0 = Math.floor(subband.tbx0 / codeblockWidth); - var cby0 = Math.floor(subband.tby0 / codeblockHeight); - var cbx1 = Math.ceil(subband.tbx1 / codeblockWidth); - var cby1 = Math.ceil(subband.tby1 / codeblockHeight); + var cbx0 = subband.tbx0 >> xcb_; + var cby0 = subband.tby0 >> ycb_; + var cbx1 = (subband.tbx1 + codeblockWidth - 1) >> xcb_; + var cby1 = (subband.tby1 + codeblockHeight - 1) >> ycb_; var precinctParameters = subband.resolution.precinctParameters; var codeblocks = []; var precincts = []; - for (var j = cby0; j < cby1; j++) { - for (var i = cbx0; i < cbx1; i++) { - var codeblock = { + var i, j, codeblock, precinctNumber; + for (j = cby0; j < cby1; j++) { + for (i = cbx0; i < cbx1; i++) { + codeblock = { cbx: i, cby: j, tbx0: codeblockWidth * i, @@ -35650,31 +35652,38 @@ var JpxImage = (function JpxImageClosure() { }; // calculate precinct number var pi = Math.floor((codeblock.tbx0 - - precinctParameters.precinctXOffset) / - precinctParameters.precinctWidth); + precinctParameters.precinctXOffset) / + precinctParameters.precinctWidth); var pj = Math.floor((codeblock.tby0 - - precinctParameters.precinctYOffset) / - precinctParameters.precinctHeight); - var precinctNumber = pj + - pi * precinctParameters.numprecinctswide; + precinctParameters.precinctYOffset) / + precinctParameters.precinctHeight); + precinctNumber = pj + pi * precinctParameters.numprecinctswide; codeblock.tbx0_ = Math.max(subband.tbx0, codeblock.tbx0); codeblock.tby0_ = Math.max(subband.tby0, codeblock.tby0); codeblock.tbx1_ = Math.min(subband.tbx1, codeblock.tbx1); codeblock.tby1_ = Math.min(subband.tby1, codeblock.tby1); codeblock.precinctNumber = precinctNumber; codeblock.subbandType = subband.type; - var coefficientsLength = (codeblock.tbx1_ - codeblock.tbx0_) * - (codeblock.tby1_ - codeblock.tby0_); codeblock.Lblock = 3; + + if (codeblock.tbx1_ <= codeblock.tbx0_ || + codeblock.tby1_ <= codeblock.tby0_) { + continue; + } codeblocks.push(codeblock); // building precinct for the sub-band - var precinct; - if (precinctNumber in precincts) { - precinct = precincts[precinctNumber]; - precinct.cbxMin = Math.min(precinct.cbxMin, i); - precinct.cbyMin = Math.min(precinct.cbyMin, j); - precinct.cbxMax = Math.max(precinct.cbxMax, i); - precinct.cbyMax = Math.max(precinct.cbyMax, j); + var precinct = precincts[precinctNumber]; + if (precinct !== undefined) { + if (i < precinct.cbxMin) { + precinct.cbxMin = i; + } else if (i > precinct.cbxMax) { + precinct.cbxMax = i; + } + if (j < precinct.cbyMin) { + precinct.cbxMin = j; + } else if (j > precinct.cbyMax) { + precinct.cbyMax = j; + } } else { precincts[precinctNumber] = precinct = { cbxMin: i, @@ -35690,13 +35699,9 @@ var JpxImage = (function JpxImageClosure() { codeblockWidth: xcb_, codeblockHeight: ycb_, numcodeblockwide: cbx1 - cbx0 + 1, - numcodeblockhigh: cby1 - cby1 + 1 + numcodeblockhigh: cby1 - cby0 + 1 }; subband.codeblocks = codeblocks; - for (var i = 0, ii = codeblocks.length; i < ii; i++) { - var codeblock = codeblocks[i]; - var precinctNumber = codeblock.precinctNumber; - } subband.precincts = precincts; } function createPacket(resolution, precinctNumber, layerNumber) { @@ -35709,8 +35714,9 @@ var JpxImage = (function JpxImageClosure() { var codeblocks = subband.codeblocks; for (var j = 0, jj = codeblocks.length; j < jj; j++) { var codeblock = codeblocks[j]; - if (codeblock.precinctNumber != precinctNumber) + if (codeblock.precinctNumber !== precinctNumber) { continue; + } precinctCodeblocks.push(codeblock); } } @@ -35739,8 +35745,9 @@ var JpxImage = (function JpxImageClosure() { for (; r <= maxDecompositionLevelsCount; r++) { for (; i < componentsCount; i++) { var component = tile.components[i]; - if (r > component.codingStyleParameters.decompositionLevelsCount) + if (r > component.codingStyleParameters.decompositionLevelsCount) { continue; + } var resolution = component.resolutions[r]; var numprecincts = resolution.precinctParameters.numprecincts; @@ -35755,7 +35762,7 @@ var JpxImage = (function JpxImageClosure() { } r = 0; } - throw 'Out of packets'; + throw new Error('JPX Error: Out of packets'); }; } function ResolutionLayerComponentPositionIterator(context) { @@ -35778,8 +35785,9 @@ var JpxImage = (function JpxImageClosure() { for (; l < layersCount; l++) { for (; i < componentsCount; i++) { var component = tile.components[i]; - if (r > component.codingStyleParameters.decompositionLevelsCount) + if (r > component.codingStyleParameters.decompositionLevelsCount) { continue; + } var resolution = component.resolutions[r]; var numprecincts = resolution.precinctParameters.numprecincts; @@ -35794,7 +35802,7 @@ var JpxImage = (function JpxImageClosure() { } l = 0; } - throw 'Out of packets'; + throw new Error('JPX Error: Out of packets'); }; } function buildPackets(context) { @@ -35879,7 +35887,6 @@ var JpxImage = (function JpxImageClosure() { } // Generate the packets sequence var progressionOrder = tile.codingStyleDefaultParameters.progressionOrder; - var packetsIterator; switch (progressionOrder) { case 0: tile.packetsIterator = @@ -35890,7 +35897,8 @@ var JpxImage = (function JpxImageClosure() { new ResolutionLayerComponentPositionIterator(context); break; default: - throw 'Unsupported progression order ' + progressionOrder; + throw new Error('JPX Error: Unsupported progression order ' + + progressionOrder); } } function parseTilePackets(context, data, offset, dataLength) { @@ -35908,7 +35916,7 @@ var JpxImage = (function JpxImageClosure() { buffer = (buffer << 8) | b; bufferSize += 8; } - if (b == 0xFF) { + if (b === 0xFF) { skipNextBit = true; } } @@ -35923,46 +35931,49 @@ var JpxImage = (function JpxImageClosure() { } } function readCodingpasses() { - var value = readBits(1); - if (value === 0) + if (readBits(1) === 0) { return 1; - value = (value << 1) | readBits(1); - if (value == 0x02) + } + if (readBits(1) === 0) { return 2; - value = (value << 2) | readBits(2); - if (value <= 0x0E) - return (value & 0x03) + 3; - value = (value << 5) | readBits(5); - if (value <= 0x1FE) - return (value & 0x1F) + 6; - value = (value << 7) | readBits(7); - return (value & 0x7F) + 37; + } + var value = readBits(2); + if (value < 3) { + return value + 3; + } + value = readBits(5); + if (value < 31) { + return value + 6; + } + value = readBits(7); + return value + 37; } var tileIndex = context.currentTile.index; var tile = context.tiles[tileIndex]; var packetsIterator = tile.packetsIterator; while (position < dataLength) { - var packet = packetsIterator.nextPacket(); + alignToByte(); if (!readBits(1)) { - alignToByte(); continue; } + var packet = packetsIterator.nextPacket(); var layerNumber = packet.layerNumber; - var queue = []; + var queue = [], codeblock; for (var i = 0, ii = packet.codeblocks.length; i < ii; i++) { - var codeblock = packet.codeblocks[i]; + codeblock = packet.codeblocks[i]; var precinct = codeblock.precinct; var codeblockColumn = codeblock.cbx - precinct.cbxMin; var codeblockRow = codeblock.cby - precinct.cbyMin; var codeblockIncluded = false; var firstTimeInclusion = false; - if ('included' in codeblock) { + var valueReady; + if (codeblock['included'] !== undefined) { codeblockIncluded = !!readBits(1); } else { // reading inclusion tree - var precinct = codeblock.precinct; + precinct = codeblock.precinct; var inclusionTree, zeroBitPlanesTree; - if ('inclusionTree' in precinct) { + if (precinct['inclusionTree'] !== undefined) { inclusionTree = precinct.inclusionTree; } else { // building inclusion and zero bit-planes trees @@ -35977,7 +35988,7 @@ var JpxImage = (function JpxImageClosure() { if (inclusionTree.reset(codeblockColumn, codeblockRow, layerNumber)) { while (true) { if (readBits(1)) { - var valueReady = !inclusionTree.nextLevel(); + valueReady = !inclusionTree.nextLevel(); if (valueReady) { codeblock.included = true; codeblockIncluded = firstTimeInclusion = true; @@ -35990,24 +36001,28 @@ var JpxImage = (function JpxImageClosure() { } } } - if (!codeblockIncluded) + if (!codeblockIncluded) { continue; + } if (firstTimeInclusion) { zeroBitPlanesTree = precinct.zeroBitPlanesTree; zeroBitPlanesTree.reset(codeblockColumn, codeblockRow); while (true) { if (readBits(1)) { - var valueReady = !zeroBitPlanesTree.nextLevel(); - if (valueReady) + valueReady = !zeroBitPlanesTree.nextLevel(); + if (valueReady) { break; - } else + } + } else { zeroBitPlanesTree.incrementValue(); + } } codeblock.zeroBitPlanes = zeroBitPlanesTree.value; } var codingpasses = readCodingpasses(); - while (readBits(1)) + while (readBits(1)) { codeblock.Lblock++; + } var codingpassesLog2 = log2(codingpasses); // rounding down log2 var bits = ((codingpasses < (1 << codingpassesLog2)) ? @@ -36022,9 +36037,10 @@ var JpxImage = (function JpxImageClosure() { alignToByte(); while (queue.length > 0) { var packetItem = queue.shift(); - var codeblock = packetItem.codeblock; - if (!('data' in codeblock)) + codeblock = packetItem.codeblock; + if (codeblock['data'] === undefined) { codeblock.data = []; + } codeblock.data.push({ data: data, start: offset + position, @@ -36036,43 +36052,52 @@ var JpxImage = (function JpxImageClosure() { } return position; } - function copyCoefficients(coefficients, x0, y0, width, height, - delta, mb, codeblocks, transformation, - segmentationSymbolUsed) { - var r = 0.5; // formula (E-6) + function copyCoefficients(coefficients, levelWidth, levelHeight, subband, + delta, mb, reversible, segmentationSymbolUsed) { + var x0 = subband.tbx0; + var y0 = subband.tby0; + var width = subband.tbx1 - subband.tbx0; + var codeblocks = subband.codeblocks; + var right = subband.type.charAt(0) === 'H' ? 1 : 0; + var bottom = subband.type.charAt(1) === 'H' ? levelWidth : 0; + for (var i = 0, ii = codeblocks.length; i < ii; ++i) { var codeblock = codeblocks[i]; var blockWidth = codeblock.tbx1_ - codeblock.tbx0_; var blockHeight = codeblock.tby1_ - codeblock.tby0_; - if (blockWidth === 0 || blockHeight === 0) + if (blockWidth === 0 || blockHeight === 0) { continue; - if (!('data' in codeblock)) + } + if (codeblock['data'] === undefined) { continue; + } var bitModel, currentCodingpassType; bitModel = new BitModel(blockWidth, blockHeight, codeblock.subbandType, - codeblock.zeroBitPlanes); + codeblock.zeroBitPlanes, mb); currentCodingpassType = 2; // first bit plane starts from cleanup // collect data var data = codeblock.data, totalLength = 0, codingpasses = 0; - for (var q = 0, qq = data.length; q < qq; q++) { - var dataItem = data[q]; + var j, jj, dataItem; + for (j = 0, jj = data.length; j < jj; j++) { + dataItem = data[j]; totalLength += dataItem.end - dataItem.start; codingpasses += dataItem.codingpasses; } - var encodedData = new Uint8Array(totalLength), k = 0; - for (var q = 0, qq = data.length; q < qq; q++) { - var dataItem = data[q]; + var encodedData = new Uint8Array(totalLength); + var position = 0; + for (j = 0, jj = data.length; j < jj; j++) { + dataItem = data[j]; var chunk = dataItem.data.subarray(dataItem.start, dataItem.end); - encodedData.set(chunk, k); - k += chunk.length; + encodedData.set(chunk, position); + position += chunk.length; } // decoding the item var decoder = new ArithmeticDecoder(encodedData, 0, totalLength); bitModel.setDecoder(decoder); - for (var q = 0; q < codingpasses; q++) { + for (j = 0; j < codingpasses; j++) { switch (currentCodingpassType) { case 0: bitModel.runSignificancePropogationPass(); @@ -36082,28 +36107,43 @@ var JpxImage = (function JpxImageClosure() { break; case 2: bitModel.runCleanupPass(); - if (segmentationSymbolUsed) + if (segmentationSymbolUsed) { bitModel.checkSegmentationSymbol(); + } break; } currentCodingpassType = (currentCodingpassType + 1) % 3; } var offset = (codeblock.tbx0_ - x0) + (codeblock.tby0_ - y0) * width; - var position = 0; - for (var j = 0; j < blockHeight; j++) { - for (var k = 0; k < blockWidth; k++) { - var n = (bitModel.coefficentsSign[position] ? -1 : 1) * - bitModel.coefficentsMagnitude[position]; - var nb = bitModel.bitsDecoded[position], correction; - if (transformation === 0 || mb > nb) { - // use r only if transformation is irreversible or - // not all bitplanes were decoded for reversible transformation - n += n < 0 ? n - r : n > 0 ? n + r : 0; - correction = 1 << (mb - nb); - } else - correction = 1; - coefficients[offset++] = n * correction * delta; + var sign = bitModel.coefficentsSign; + var magnitude = bitModel.coefficentsMagnitude; + var bitsDecoded = bitModel.bitsDecoded; + var magnitudeCorrection = reversible ? 0 : 0.5; + var k, n, nb; + position = 0; + // Do the interleaving of Section F.3.3 here, so we do not need + // to copy later. LL level is not interleaved, just copied. + var interleave = (subband.type !== 'LL'); + for (j = 0; j < blockHeight; j++) { + var row = (offset / width) | 0; // row in the non-interleaved subband + var levelOffset = 2 * row * (levelWidth - width) + right + bottom; + for (k = 0; k < blockWidth; k++) { + n = magnitude[position]; + if (n !== 0) { + n = (n + magnitudeCorrection) * delta; + if (sign[position] !== 0) { + n = -n; + } + nb = bitsDecoded[position]; + var pos = interleave ? (levelOffset + (offset << 1)) : offset; + if (reversible && (nb >= mb)) { + coefficients[pos] = n; + } else { + coefficients[pos] = n * (1 << (mb - nb)); + } + } + offset++; position++; } offset += width - blockWidth; @@ -36119,15 +36159,23 @@ var JpxImage = (function JpxImageClosure() { var spqcds = quantizationParameters.SPqcds; var scalarExpounded = quantizationParameters.scalarExpounded; var guardBits = quantizationParameters.guardBits; - var transformation = codingStyleParameters.transformation; var segmentationSymbolUsed = codingStyleParameters.segmentationSymbolUsed; var precision = context.components[c].precision; + var reversible = codingStyleParameters.reversibleTransformation; + var transform = (reversible ? new ReversibleTransform() : + new IrreversibleTransform()); + var subbandCoefficients = []; - var k = 0, b = 0; + var b = 0; for (var i = 0; i <= decompositionLevelsCount; i++) { var resolution = component.resolutions[i]; + var width = resolution.trx1 - resolution.trx0; + var height = resolution.try1 - resolution.try0; + // Allocate space for the whole sublevel. + var coefficients = new Float32Array(width * height); + for (var j = 0, jj = resolution.subbands.length; j < jj; j++) { var mu, epsilon; if (!scalarExpounded) { @@ -36137,38 +36185,34 @@ var JpxImage = (function JpxImageClosure() { } else { mu = spqcds[b].mu; epsilon = spqcds[b].epsilon; + b++; } var subband = resolution.subbands[j]; - var width = subband.tbx1 - subband.tbx0; - var height = subband.tby1 - subband.tby0; var gainLog2 = SubbandsGainLog2[subband.type]; // calulate quantization coefficient (Section E.1.1.1) - var delta = Math.pow(2, (precision + gainLog2) - epsilon) * - (1 + mu / 2048); + var delta = (reversible ? 1 : + Math.pow(2, precision + gainLog2 - epsilon) * (1 + mu / 2048)); var mb = (guardBits + epsilon - 1); - var coefficients = new Float32Array(width * height); - copyCoefficients(coefficients, subband.tbx0, subband.tby0, - width, height, delta, mb, subband.codeblocks, transformation, - segmentationSymbolUsed); - - subbandCoefficients.push({ - width: width, - height: height, - items: coefficients - }); - - b++; + // In the first resolution level, copyCoefficients will fill the + // whole array with coefficients. In the succeding passes, + // copyCoefficients will consecutively fill in the values that belong + // to the interleaved positions of the HL, LH, and HH coefficients. + // The LL coefficients will then be interleaved in Transform.iterate(). + copyCoefficients(coefficients, width, height, subband, delta, mb, + reversible, segmentationSymbolUsed); } + subbandCoefficients.push({ + width: width, + height: height, + items: coefficients + }); } - var transformation = codingStyleParameters.transformation; - var transform = transformation === 0 ? new IrreversibleTransform() : - new ReversibleTransform(); var result = transform.calculate(subbandCoefficients, - component.tcx0, component.tcy0); + component.tcx0, component.tcy0); return { left: component.tcx0, top: component.tcy0, @@ -36184,54 +36228,91 @@ var JpxImage = (function JpxImageClosure() { var resultImages = []; for (var i = 0, ii = context.tiles.length; i < ii; i++) { var tile = context.tiles[i]; - var result = []; - for (var c = 0; c < componentsCount; c++) { - var image = transformTile(context, tile, c); - result.push(image); + var transformedTiles = []; + var c; + for (c = 0; c < componentsCount; c++) { + transformedTiles[c] = transformTile(context, tile, c); } + var tile0 = transformedTiles[0]; + var out = new Uint8Array(tile0.items.length * componentsCount); + var result = { + left: tile0.left, + top: tile0.top, + width: tile0.width, + height: tile0.height, + items: out + }; // Section G.2.2 Inverse multi component transform + var shift, offset, max, min, maxK; + var pos = 0, j, jj, y0, y1, y2, r, g, b, k, val; if (tile.codingStyleDefaultParameters.multipleComponentTransform) { - var y0items = result[0].items; - var y1items = result[1].items; - var y2items = result[2].items; - for (var j = 0, jj = y0items.length; j < jj; j++) { - var y0 = y0items[j], y1 = y1items[j], y2 = y2items[j]; - var i1 = y0 - ((y2 + y1) >> 2); - y1items[j] = i1; - y0items[j] = y2 + i1; - y2items[j] = y1 + i1; + var fourComponents = componentsCount === 4; + var y0items = transformedTiles[0].items; + var y1items = transformedTiles[1].items; + var y2items = transformedTiles[2].items; + var y3items = fourComponents ? transformedTiles[3].items : null; + + // HACK: The multiple component transform formulas below assume that + // all components have the same precision. With this in mind, we + // compute shift and offset only once. + shift = components[0].precision - 8; + offset = (128 << shift) + 0.5; + max = 255 * (1 << shift); + maxK = max * 0.5; + min = -maxK; + + var component0 = tile.components[0]; + var alpha01 = componentsCount - 3; + jj = y0items.length; + if (!component0.codingStyleParameters.reversibleTransformation) { + // inverse irreversible multiple component transform + for (j = 0; j < jj; j++, pos += alpha01) { + y0 = y0items[j] + offset; + y1 = y1items[j]; + y2 = y2items[j]; + r = y0 + 1.402 * y2; + g = y0 - 0.34413 * y1 - 0.71414 * y2; + b = y0 + 1.772 * y1; + out[pos++] = r <= 0 ? 0 : r >= max ? 255 : r >> shift; + out[pos++] = g <= 0 ? 0 : g >= max ? 255 : g >> shift; + out[pos++] = b <= 0 ? 0 : b >= max ? 255 : b >> shift; + } + } else { + // inverse reversible multiple component transform + for (j = 0; j < jj; j++, pos += alpha01) { + y0 = y0items[j] + offset; + y1 = y1items[j]; + y2 = y2items[j]; + g = y0 - ((y2 + y1) >> 2); + r = g + y2; + b = g + y1; + out[pos++] = r <= 0 ? 0 : r >= max ? 255 : r >> shift; + out[pos++] = g <= 0 ? 0 : g >= max ? 255 : g >> shift; + out[pos++] = b <= 0 ? 0 : b >= max ? 255 : b >> shift; + } + } + if (fourComponents) { + for (j = 0, pos = 3; j < jj; j++, pos += 4) { + k = y3items[j]; + out[pos] = k <= min ? 0 : k >= maxK ? 255 : (k + offset) >> shift; + } + } + } else { // no multi-component transform + for (c = 0; c < componentsCount; c++) { + var items = transformedTiles[c].items; + shift = components[c].precision - 8; + offset = (128 << shift) + 0.5; + max = (127.5 * (1 << shift)); + min = -max; + for (pos = c, j = 0, jj = items.length; j < jj; j++) { + val = items[j]; + out[pos] = val <= min ? 0 : + val >= max ? 255 : (val + offset) >> shift; + pos += componentsCount; + } } } - - // Section G.1 DC level shifting to unsigned component values - for (var c = 0; c < componentsCount; c++) { - var component = components[c]; - if (component.isSigned) - continue; - - var offset = 1 << (component.precision - 1); - var tileImage = result[c]; - var items = tileImage.items; - for (var j = 0, jj = items.length; j < jj; j++) - items[j] += offset; - } - - // To simplify things: shift and clamp output to 8 bit unsigned - for (var c = 0; c < componentsCount; c++) { - var component = components[c]; - var offset = component.isSigned ? 128 : 0; - var shift = component.precision - 8; - var tileImage = result[c]; - var items = tileImage.items; - var data = new Uint8Array(items.length); - for (var j = 0, jj = items.length; j < jj; j++) { - var value = (items[j] >> shift) + offset; - data[j] = value < 0 ? 0 : value > 255 ? 255 : value; - } - result[c].items = data; - } - resultImages.push(result); } return resultImages; @@ -36240,14 +36321,13 @@ var JpxImage = (function JpxImageClosure() { var siz = context.SIZ; var componentsCount = siz.Csiz; var tile = context.tiles[tileIndex]; - var resultTiles = []; for (var c = 0; c < componentsCount; c++) { var component = tile.components[c]; - var qcdOrQcc = c in context.currentTile.QCC ? - context.currentTile.QCC[c] : context.currentTile.QCD; + var qcdOrQcc = (context.currentTile.QCC[c] !== undefined ? + context.currentTile.QCC[c] : context.currentTile.QCD); component.quantizationParameters = qcdOrQcc; - var codOrCoc = c in context.currentTile.COC ? - context.currentTile.COC[c] : context.currentTile.COD; + var codOrCoc = (context.currentTile.COC[c] !== undefined ? + context.currentTile.COC[c] : context.currentTile.COD); component.codingStyleParameters = codOrCoc; } tile.codingStyleDefaultParameters = context.currentTile.COD; @@ -36271,11 +36351,11 @@ var JpxImage = (function JpxImageClosure() { } TagTree.prototype = { reset: function TagTree_reset(i, j) { - var currentLevel = 0, value = 0; + var currentLevel = 0, value = 0, level; while (currentLevel < this.levels.length) { - var level = this.levels[currentLevel]; + level = this.levels[currentLevel]; var index = i + j * level.width; - if (index in level.items) { + if (level.items[index] !== undefined) { value = level.items[index]; break; } @@ -36285,7 +36365,7 @@ var JpxImage = (function JpxImageClosure() { currentLevel++; } currentLevel--; - var level = this.levels[currentLevel]; + level = this.levels[currentLevel]; level.items[level.index] = value; this.currentLevel = currentLevel; delete this.value; @@ -36305,7 +36385,7 @@ var JpxImage = (function JpxImageClosure() { } this.currentLevel = currentLevel; - var level = this.levels[currentLevel]; + level = this.levels[currentLevel]; level.items[level.index] = value; return true; } @@ -36319,8 +36399,9 @@ var JpxImage = (function JpxImageClosure() { this.levels = []; for (var i = 0; i < levelsLength; i++) { var items = new Uint8Array(width * height); - for (var j = 0, jj = items.length; j < jj; j++) + for (var j = 0, jj = items.length; j < jj; j++) { items[j] = defaultValue; + } var level = { width: width, @@ -36342,8 +36423,9 @@ var JpxImage = (function JpxImageClosure() { level.index = index; var value = level.items[index]; - if (value == 0xFF) + if (value === 0xFF) { break; + } if (value > stopValue) { this.currentLevel = currentLevel; @@ -36369,7 +36451,7 @@ var JpxImage = (function JpxImageClosure() { var level = this.levels[levelIndex]; var currentValue = level.items[level.index]; while (--levelIndex >= 0) { - var level = this.levels[levelIndex]; + level = this.levels[levelIndex]; level.items[level.index] = currentValue; } }, @@ -36379,11 +36461,12 @@ var JpxImage = (function JpxImageClosure() { var value = level.items[level.index]; level.items[level.index] = 0xFF; currentLevel--; - if (currentLevel < 0) + if (currentLevel < 0) { return false; + } this.currentLevel = currentLevel; - var level = this.levels[currentLevel]; + level = this.levels[currentLevel]; level.items[level.index] = value; return true; } @@ -36391,171 +36474,10 @@ var JpxImage = (function JpxImageClosure() { return InclusionTree; })(); - // Implements C.3. Arithmetic decoding procedures - var ArithmeticDecoder = (function ArithmeticDecoderClosure() { - var QeTable = [ - {qe: 0x5601, nmps: 1, nlps: 1, switchFlag: 1}, - {qe: 0x3401, nmps: 2, nlps: 6, switchFlag: 0}, - {qe: 0x1801, nmps: 3, nlps: 9, switchFlag: 0}, - {qe: 0x0AC1, nmps: 4, nlps: 12, switchFlag: 0}, - {qe: 0x0521, nmps: 5, nlps: 29, switchFlag: 0}, - {qe: 0x0221, nmps: 38, nlps: 33, switchFlag: 0}, - {qe: 0x5601, nmps: 7, nlps: 6, switchFlag: 1}, - {qe: 0x5401, nmps: 8, nlps: 14, switchFlag: 0}, - {qe: 0x4801, nmps: 9, nlps: 14, switchFlag: 0}, - {qe: 0x3801, nmps: 10, nlps: 14, switchFlag: 0}, - {qe: 0x3001, nmps: 11, nlps: 17, switchFlag: 0}, - {qe: 0x2401, nmps: 12, nlps: 18, switchFlag: 0}, - {qe: 0x1C01, nmps: 13, nlps: 20, switchFlag: 0}, - {qe: 0x1601, nmps: 29, nlps: 21, switchFlag: 0}, - {qe: 0x5601, nmps: 15, nlps: 14, switchFlag: 1}, - {qe: 0x5401, nmps: 16, nlps: 14, switchFlag: 0}, - {qe: 0x5101, nmps: 17, nlps: 15, switchFlag: 0}, - {qe: 0x4801, nmps: 18, nlps: 16, switchFlag: 0}, - {qe: 0x3801, nmps: 19, nlps: 17, switchFlag: 0}, - {qe: 0x3401, nmps: 20, nlps: 18, switchFlag: 0}, - {qe: 0x3001, nmps: 21, nlps: 19, switchFlag: 0}, - {qe: 0x2801, nmps: 22, nlps: 19, switchFlag: 0}, - {qe: 0x2401, nmps: 23, nlps: 20, switchFlag: 0}, - {qe: 0x2201, nmps: 24, nlps: 21, switchFlag: 0}, - {qe: 0x1C01, nmps: 25, nlps: 22, switchFlag: 0}, - {qe: 0x1801, nmps: 26, nlps: 23, switchFlag: 0}, - {qe: 0x1601, nmps: 27, nlps: 24, switchFlag: 0}, - {qe: 0x1401, nmps: 28, nlps: 25, switchFlag: 0}, - {qe: 0x1201, nmps: 29, nlps: 26, switchFlag: 0}, - {qe: 0x1101, nmps: 30, nlps: 27, switchFlag: 0}, - {qe: 0x0AC1, nmps: 31, nlps: 28, switchFlag: 0}, - {qe: 0x09C1, nmps: 32, nlps: 29, switchFlag: 0}, - {qe: 0x08A1, nmps: 33, nlps: 30, switchFlag: 0}, - {qe: 0x0521, nmps: 34, nlps: 31, switchFlag: 0}, - {qe: 0x0441, nmps: 35, nlps: 32, switchFlag: 0}, - {qe: 0x02A1, nmps: 36, nlps: 33, switchFlag: 0}, - {qe: 0x0221, nmps: 37, nlps: 34, switchFlag: 0}, - {qe: 0x0141, nmps: 38, nlps: 35, switchFlag: 0}, - {qe: 0x0111, nmps: 39, nlps: 36, switchFlag: 0}, - {qe: 0x0085, nmps: 40, nlps: 37, switchFlag: 0}, - {qe: 0x0049, nmps: 41, nlps: 38, switchFlag: 0}, - {qe: 0x0025, nmps: 42, nlps: 39, switchFlag: 0}, - {qe: 0x0015, nmps: 43, nlps: 40, switchFlag: 0}, - {qe: 0x0009, nmps: 44, nlps: 41, switchFlag: 0}, - {qe: 0x0005, nmps: 45, nlps: 42, switchFlag: 0}, - {qe: 0x0001, nmps: 45, nlps: 43, switchFlag: 0}, - {qe: 0x5601, nmps: 46, nlps: 46, switchFlag: 0} - ]; - - function ArithmeticDecoder(data, start, end) { - this.data = data; - this.bp = start; - this.dataEnd = end; - - this.chigh = data[start]; - this.clow = 0; - - this.byteIn(); - - this.chigh = ((this.chigh << 7) & 0xFFFF) | ((this.clow >> 9) & 0x7F); - this.clow = (this.clow << 7) & 0xFFFF; - this.ct -= 7; - this.a = 0x8000; - } - - ArithmeticDecoder.prototype = { - byteIn: function ArithmeticDecoder_byteIn() { - var data = this.data; - var bp = this.bp; - if (data[bp] == 0xFF) { - var b1 = data[bp + 1]; - if (b1 > 0x8F) { - this.clow += 0xFF00; - this.ct = 8; - } else { - bp++; - this.clow += (data[bp] << 9); - this.ct = 7; - this.bp = bp; - } - } else { - bp++; - this.clow += bp < this.dataEnd ? (data[bp] << 8) : 0xFF00; - this.ct = 8; - this.bp = bp; - } - if (this.clow > 0xFFFF) { - this.chigh += (this.clow >> 16); - this.clow &= 0xFFFF; - } - }, - readBit: function ArithmeticDecoder_readBit(cx) { - var qeIcx = QeTable[cx.index].qe; - this.a -= qeIcx; - - if (this.chigh < qeIcx) { - var d = this.exchangeLps(cx); - this.renormD(); - return d; - } else { - this.chigh -= qeIcx; - if ((this.a & 0x8000) === 0) { - var d = this.exchangeMps(cx); - this.renormD(); - return d; - } else { - return cx.mps; - } - } - }, - renormD: function ArithmeticDecoder_renormD() { - do { - if (this.ct === 0) - this.byteIn(); - - this.a <<= 1; - this.chigh = ((this.chigh << 1) & 0xFFFF) | ((this.clow >> 15) & 1); - this.clow = (this.clow << 1) & 0xFFFF; - this.ct--; - } while ((this.a & 0x8000) === 0); - }, - exchangeMps: function ArithmeticDecoder_exchangeMps(cx) { - var d; - var qeTableIcx = QeTable[cx.index]; - if (this.a < qeTableIcx.qe) { - d = 1 - cx.mps; - - if (qeTableIcx.switchFlag == 1) { - cx.mps = 1 - cx.mps; - } - cx.index = qeTableIcx.nlps; - } else { - d = cx.mps; - cx.index = qeTableIcx.nmps; - } - return d; - }, - exchangeLps: function ArithmeticDecoder_exchangeLps(cx) { - var d; - var qeTableIcx = QeTable[cx.index]; - if (this.a < qeTableIcx.qe) { - this.a = qeTableIcx.qe; - d = cx.mps; - cx.index = qeTableIcx.nmps; - } else { - this.a = qeTableIcx.qe; - d = 1 - cx.mps; - - if (qeTableIcx.switchFlag == 1) { - cx.mps = 1 - cx.mps; - } - cx.index = qeTableIcx.nlps; - } - return d; - } - }; - - return ArithmeticDecoder; - })(); - // Section D. Coefficient bit modeling var BitModel = (function BitModelClosure() { + var UNIFORM_CONTEXT = 17; + var RUNLENGTH_CONTEXT = 18; // Table D-1 // The index is binary presentation: 0dddvvhh, ddd - sum of Di (0..4), // vv - sum of Vi (0..2), and hh - sum of Hi (0..2) @@ -36575,35 +36497,12 @@ var JpxImage = (function JpxImageClosure() { 8, 0, 8, 8, 8, 0, 8, 8, 8, 0, 0, 0, 0, 0, 8, 8, 8, 0, 8, 8, 8, 0, 8, 8, 8 ]); - // Table D-2 - function calcSignContribution(significance0, sign0, significance1, sign1) { - if (significance1) { - if (!sign1) - return significance0 ? (!sign0 ? 1 : 0) : 1; - else - return significance0 ? (!sign0 ? 0 : -1) : -1; - } else - return significance0 ? (!sign0 ? 1 : -1) : 0; - } - // Table D-3 - var SignContextLabels = [ - {contextLabel: 13, xorBit: 0}, - {contextLabel: 12, xorBit: 0}, - {contextLabel: 11, xorBit: 0}, - {contextLabel: 10, xorBit: 0}, - {contextLabel: 9, xorBit: 0}, - {contextLabel: 10, xorBit: 1}, - {contextLabel: 11, xorBit: 1}, - {contextLabel: 12, xorBit: 1}, - {contextLabel: 13, xorBit: 1} - ]; - - function BitModel(width, height, subband, zeroBitPlanes) { + function BitModel(width, height, subband, zeroBitPlanes, mb) { this.width = width; this.height = height; - this.contextLabelTable = subband == 'HH' ? HHContextLabel : - subband == 'HL' ? HLContextLabel : LLAndLHContextsLabel; + this.contextLabelTable = (subband === 'HH' ? HHContextLabel : + (subband === 'HL' ? HLContextLabel : LLAndLHContextsLabel)); var coefficientCount = width * height; @@ -36611,12 +36510,17 @@ var JpxImage = (function JpxImageClosure() { // add border state cells for significanceState this.neighborsSignificance = new Uint8Array(coefficientCount); this.coefficentsSign = new Uint8Array(coefficientCount); - this.coefficentsMagnitude = new Uint32Array(coefficientCount); + this.coefficentsMagnitude = mb > 14 ? new Uint32Array(coefficientCount) : + mb > 6 ? new Uint16Array(coefficientCount) : + new Uint8Array(coefficientCount); this.processingFlags = new Uint8Array(coefficientCount); - var bitsDecoded = new Uint8Array(this.width * this.height); - for (var i = 0, ii = bitsDecoded.length; i < ii; i++) - bitsDecoded[i] = zeroBitPlanes; + var bitsDecoded = new Uint8Array(coefficientCount); + if (zeroBitPlanes !== 0) { + for (var i = 0; i < coefficientCount; i++) { + bitsDecoded[i] = zeroBitPlanes; + } + } this.bitsDecoded = bitsDecoded; this.reset(); @@ -36627,36 +36531,52 @@ var JpxImage = (function JpxImageClosure() { this.decoder = decoder; }, reset: function BitModel_reset() { - this.uniformContext = {index: 46, mps: 0}; - this.runLengthContext = {index: 3, mps: 0}; - this.contexts = []; - this.contexts.push({index: 4, mps: 0}); - for (var i = 1; i <= 16; i++) - this.contexts.push({index: 0, mps: 0}); + // We have 17 contexts that are accessed via context labels, + // plus the uniform and runlength context. + this.contexts = new Int8Array(19); + + // Contexts are packed into 1 byte: + // highest 7 bits carry the index, lowest bit carries mps + this.contexts[0] = (4 << 1) | 0; + this.contexts[UNIFORM_CONTEXT] = (46 << 1) | 0; + this.contexts[RUNLENGTH_CONTEXT] = (3 << 1) | 0; }, setNeighborsSignificance: - function BitModel_setNeighborsSignificance(row, column) { + function BitModel_setNeighborsSignificance(row, column, index) { var neighborsSignificance = this.neighborsSignificance; var width = this.width, height = this.height; - var index = row * width + column; + var left = (column > 0); + var right = (column + 1 < width); + var i; + if (row > 0) { - if (column > 0) - neighborsSignificance[index - width - 1] += 0x10; - if (column + 1 < width) - neighborsSignificance[index - width + 1] += 0x10; - neighborsSignificance[index - width] += 0x04; + i = index - width; + if (left) { + neighborsSignificance[i - 1] += 0x10; + } + if (right) { + neighborsSignificance[i + 1] += 0x10; + } + neighborsSignificance[i] += 0x04; } + if (row + 1 < height) { - if (column > 0) - neighborsSignificance[index + width - 1] += 0x10; - if (column + 1 < width) - neighborsSignificance[index + width + 1] += 0x10; - neighborsSignificance[index + width] += 0x04; + i = index + width; + if (left) { + neighborsSignificance[i - 1] += 0x10; + } + if (right) { + neighborsSignificance[i + 1] += 0x10; + } + neighborsSignificance[i] += 0x04; } - if (column > 0) + + if (left) { neighborsSignificance[index - 1] += 0x01; - if (column + 1 < width) + } + if (right) { neighborsSignificance[index + 1] += 0x01; + } neighborsSignificance[index] |= 0x80; }, runSignificancePropogationPass: @@ -36665,38 +36585,38 @@ var JpxImage = (function JpxImageClosure() { var width = this.width, height = this.height; var coefficentsMagnitude = this.coefficentsMagnitude; var coefficentsSign = this.coefficentsSign; - var contextLabels = this.contextLabels; var neighborsSignificance = this.neighborsSignificance; var processingFlags = this.processingFlags; var contexts = this.contexts; var labels = this.contextLabelTable; var bitsDecoded = this.bitsDecoded; - // clear processed flag var processedInverseMask = ~1; var processedMask = 1; var firstMagnitudeBitMask = 2; - for (var q = 0, qq = width * height; q < qq; q++) - processingFlags[q] &= processedInverseMask; for (var i0 = 0; i0 < height; i0 += 4) { for (var j = 0; j < width; j++) { var index = i0 * width + j; for (var i1 = 0; i1 < 4; i1++, index += width) { var i = i0 + i1; - if (i >= height) + if (i >= height) { break; + } + // clear processed flag first + processingFlags[index] &= processedInverseMask; - if (coefficentsMagnitude[index] || !neighborsSignificance[index]) + if (coefficentsMagnitude[index] || + !neighborsSignificance[index]) { continue; + } var contextLabel = labels[neighborsSignificance[index]]; - var cx = contexts[contextLabel]; - var decision = decoder.readBit(cx); + var decision = decoder.readBit(contexts, contextLabel); if (decision) { - var sign = this.decodeSignBit(i, j); + var sign = this.decodeSignBit(i, j, index); coefficentsSign[index] = sign; coefficentsMagnitude[index] = 1; - this.setNeighborsSignificance(i, j); + this.setNeighborsSignificance(i, j, index); processingFlags[index] |= firstMagnitudeBitMask; } bitsDecoded[index]++; @@ -36705,28 +36625,56 @@ var JpxImage = (function JpxImageClosure() { } } }, - decodeSignBit: function BitModel_decodeSignBit(row, column) { + decodeSignBit: function BitModel_decodeSignBit(row, column, index) { var width = this.width, height = this.height; - var index = row * width + column; var coefficentsMagnitude = this.coefficentsMagnitude; var coefficentsSign = this.coefficentsSign; - var horizontalContribution = calcSignContribution( - column > 0 && coefficentsMagnitude[index - 1], - coefficentsSign[index - 1], - column + 1 < width && coefficentsMagnitude[index + 1], - coefficentsSign[index + 1]); - var verticalContribution = calcSignContribution( - row > 0 && coefficentsMagnitude[index - width], - coefficentsSign[index - width], - row + 1 < height && coefficentsMagnitude[index + width], - coefficentsSign[index + width]); + var contribution, sign0, sign1, significance1; + var contextLabel, decoded; - var contextLabelAndXor = SignContextLabels[ - 3 * (1 - horizontalContribution) + (1 - verticalContribution)]; - var contextLabel = contextLabelAndXor.contextLabel; - var cx = this.contexts[contextLabel]; - var decoded = this.decoder.readBit(cx); - return decoded ^ contextLabelAndXor.xorBit; + // calculate horizontal contribution + significance1 = (column > 0 && coefficentsMagnitude[index - 1] !== 0); + if (column + 1 < width && coefficentsMagnitude[index + 1] !== 0) { + sign1 = coefficentsSign[index + 1]; + if (significance1) { + sign0 = coefficentsSign[index - 1]; + contribution = 1 - sign1 - sign0; + } else { + contribution = 1 - sign1 - sign1; + } + } else if (significance1) { + sign0 = coefficentsSign[index - 1]; + contribution = 1 - sign0 - sign0; + } else { + contribution = 0; + } + var horizontalContribution = 3 * contribution; + + // calculate vertical contribution and combine with the horizontal + significance1 = (row > 0 && coefficentsMagnitude[index - width] !== 0); + if (row + 1 < height && coefficentsMagnitude[index + width] !== 0) { + sign1 = coefficentsSign[index + width]; + if (significance1) { + sign0 = coefficentsSign[index - width]; + contribution = 1 - sign1 - sign0 + horizontalContribution; + } else { + contribution = 1 - sign1 - sign1 + horizontalContribution; + } + } else if (significance1) { + sign0 = coefficentsSign[index - width]; + contribution = 1 - sign0 - sign0 + horizontalContribution; + } else { + contribution = horizontalContribution; + } + + if (contribution >= 0) { + contextLabel = 9 + contribution; + decoded = this.decoder.readBit(this.contexts, contextLabel); + } else { + contextLabel = 9 - contribution; + decoded = this.decoder.readBit(this.contexts, contextLabel) ^ 1; + } + return decoded; }, runMagnitudeRefinementPass: function BitModel_runMagnitudeRefinementPass() { @@ -36739,32 +36687,29 @@ var JpxImage = (function JpxImageClosure() { var processingFlags = this.processingFlags; var processedMask = 1; var firstMagnitudeBitMask = 2; - for (var i0 = 0; i0 < height; i0 += 4) { + var length = width * height; + var width4 = width * 4; + + for (var index0 = 0, indexNext; index0 < length; index0 = indexNext) { + indexNext = Math.min(length, index0 + width4); for (var j = 0; j < width; j++) { - for (var i1 = 0; i1 < 4; i1++) { - var i = i0 + i1; - if (i >= height) - break; - var index = i * width + j; + for (var index = index0 + j; index < indexNext; index += width) { // significant but not those that have just become if (!coefficentsMagnitude[index] || - (processingFlags[index] & processedMask) !== 0) + (processingFlags[index] & processedMask) !== 0) { continue; - - var contextLabel = 16; - if ((processingFlags[index] & - firstMagnitudeBitMask) !== 0) { - processingFlags[i * width + j] ^= firstMagnitudeBitMask; - // first refinement - var significance = neighborsSignificance[index]; - var sumOfSignificance = (significance & 3) + - ((significance >> 2) & 3) + ((significance >> 4) & 7); - contextLabel = sumOfSignificance >= 1 ? 15 : 14; } - var cx = contexts[contextLabel]; - var bit = decoder.readBit(cx); + var contextLabel = 16; + if ((processingFlags[index] & firstMagnitudeBitMask) !== 0) { + processingFlags[index] ^= firstMagnitudeBitMask; + // first refinement + var significance = neighborsSignificance[index] & 127; + contextLabel = significance === 0 ? 15 : 14; + } + + var bit = decoder.readBit(contexts, contextLabel); coefficentsMagnitude[index] = (coefficentsMagnitude[index] << 1) | bit; bitsDecoded[index]++; @@ -36777,7 +36722,6 @@ var JpxImage = (function JpxImageClosure() { var decoder = this.decoder; var width = this.width, height = this.height; var neighborsSignificance = this.neighborsSignificance; - var significanceState = this.significanceState; var coefficentsMagnitude = this.coefficentsMagnitude; var coefficentsSign = this.coefficentsSign; var contexts = this.contexts; @@ -36789,12 +36733,16 @@ var JpxImage = (function JpxImageClosure() { var oneRowDown = width; var twoRowsDown = width * 2; var threeRowsDown = width * 3; - for (var i0 = 0; i0 < height; i0 += 4) { + var iNext; + for (var i0 = 0; i0 < height; i0 = iNext) { + iNext = Math.min(i0 + 4, height); + var indexBase = i0 * width; + var checkAllEmpty = i0 + 3 < height; for (var j = 0; j < width; j++) { - var index0 = i0 * width + j; - // using the property: labels[neighborsSignificance[index]] == 0 - // when neighborsSignificance[index] == 0 - var allEmpty = i0 + 3 < height && + var index0 = indexBase + j; + // using the property: labels[neighborsSignificance[index]] === 0 + // when neighborsSignificance[index] === 0 + var allEmpty = (checkAllEmpty && processingFlags[index0] === 0 && processingFlags[index0 + oneRowDown] === 0 && processingFlags[index0 + twoRowsDown] === 0 && @@ -36802,12 +36750,12 @@ var JpxImage = (function JpxImageClosure() { neighborsSignificance[index0] === 0 && neighborsSignificance[index0 + oneRowDown] === 0 && neighborsSignificance[index0 + twoRowsDown] === 0 && - neighborsSignificance[index0 + threeRowsDown] === 0; + neighborsSignificance[index0 + threeRowsDown] === 0); var i1 = 0, index = index0; - var cx, i; + var i = i0, sign; if (allEmpty) { - cx = this.runLengthContext; - var hasSignificantCoefficent = decoder.readBit(cx); + var hasSignificantCoefficent = + decoder.readBit(contexts, RUNLENGTH_CONTEXT); if (!hasSignificantCoefficent) { bitsDecoded[index0]++; bitsDecoded[index0 + oneRowDown]++; @@ -36815,40 +36763,39 @@ var JpxImage = (function JpxImageClosure() { bitsDecoded[index0 + threeRowsDown]++; continue; // next column } - cx = this.uniformContext; - i1 = (decoder.readBit(cx) << 1) | decoder.readBit(cx); - i = i0 + i1; - index += i1 * width; + i1 = (decoder.readBit(contexts, UNIFORM_CONTEXT) << 1) | + decoder.readBit(contexts, UNIFORM_CONTEXT); + if (i1 !== 0) { + i = i0 + i1; + index += i1 * width; + } - var sign = this.decodeSignBit(i, j); + sign = this.decodeSignBit(i, j, index); coefficentsSign[index] = sign; coefficentsMagnitude[index] = 1; - this.setNeighborsSignificance(i, j); + this.setNeighborsSignificance(i, j, index); processingFlags[index] |= firstMagnitudeBitMask; index = index0; - for (var i2 = i0; i2 <= i; i2++, index += width) + for (var i2 = i0; i2 <= i; i2++, index += width) { bitsDecoded[index]++; + } i1++; } - for (; i1 < 4; i1++, index += width) { - i = i0 + i1; - if (i >= height) - break; - + for (i = i0 + i1; i < iNext; i++, index += width) { if (coefficentsMagnitude[index] || - (processingFlags[index] & processedMask) !== 0) + (processingFlags[index] & processedMask) !== 0) { continue; + } var contextLabel = labels[neighborsSignificance[index]]; - cx = contexts[contextLabel]; - var decision = decoder.readBit(cx); - if (decision == 1) { - var sign = this.decodeSignBit(i, j); + var decision = decoder.readBit(contexts, contextLabel); + if (decision === 1) { + sign = this.decodeSignBit(i, j, index); coefficentsSign[index] = sign; coefficentsMagnitude[index] = 1; - this.setNeighborsSignificance(i, j); + this.setNeighborsSignificance(i, j, index); processingFlags[index] |= firstMagnitudeBitMask; } bitsDecoded[index]++; @@ -36858,128 +36805,139 @@ var JpxImage = (function JpxImageClosure() { }, checkSegmentationSymbol: function BitModel_checkSegmentationSymbol() { var decoder = this.decoder; - var cx = this.uniformContext; - var symbol = (decoder.readBit(cx) << 3) | (decoder.readBit(cx) << 2) | - (decoder.readBit(cx) << 1) | decoder.readBit(cx); - if (symbol != 0xA) - throw 'Invalid segmentation symbol'; + var contexts = this.contexts; + var symbol = (decoder.readBit(contexts, UNIFORM_CONTEXT) << 3) | + (decoder.readBit(contexts, UNIFORM_CONTEXT) << 2) | + (decoder.readBit(contexts, UNIFORM_CONTEXT) << 1) | + decoder.readBit(contexts, UNIFORM_CONTEXT); + if (symbol !== 0xA) { + throw new Error('JPX Error: Invalid segmentation symbol'); + } } }; return BitModel; })(); - // Section F, Discrete wavelet transofrmation + // Section F, Discrete wavelet transformation var Transform = (function TransformClosure() { - function Transform() { - } + function Transform() {} + Transform.prototype.calculate = function transformCalculate(subbands, u0, v0) { var ll = subbands[0]; - for (var i = 1, ii = subbands.length, j = 1; i < ii; i += 3, j++) { - ll = this.iterate(ll, subbands[i], subbands[i + 1], - subbands[i + 2], u0, v0); + for (var i = 1, ii = subbands.length; i < ii; i++) { + ll = this.iterate(ll, subbands[i], u0, v0); } return ll; }; - Transform.prototype.expand = function expand(buffer, bufferPadding, step) { - // Section F.3.7 extending... using max extension of 4 - var i1 = bufferPadding - 1, j1 = bufferPadding + 1; - var i2 = bufferPadding + step - 2, j2 = bufferPadding + step; - buffer[i1--] = buffer[j1++]; - buffer[j2++] = buffer[i2--]; - buffer[i1--] = buffer[j1++]; - buffer[j2++] = buffer[i2--]; - buffer[i1--] = buffer[j1++]; - buffer[j2++] = buffer[i2--]; - buffer[i1--] = buffer[j1++]; - buffer[j2++] = buffer[i2--]; + Transform.prototype.extend = function extend(buffer, offset, size) { + // Section F.3.7 extending... using max extension of 4 + var i1 = offset - 1, j1 = offset + 1; + var i2 = offset + size - 2, j2 = offset + size; + buffer[i1--] = buffer[j1++]; + buffer[j2++] = buffer[i2--]; + buffer[i1--] = buffer[j1++]; + buffer[j2++] = buffer[i2--]; + buffer[i1--] = buffer[j1++]; + buffer[j2++] = buffer[i2--]; + buffer[i1] = buffer[j1]; + buffer[j2] = buffer[i2]; }; - Transform.prototype.iterate = function Transform_iterate(ll, hl, lh, hh, - u0, v0) { + Transform.prototype.iterate = function Transform_iterate(ll, hl_lh_hh, + u0, v0) { var llWidth = ll.width, llHeight = ll.height, llItems = ll.items; - var hlWidth = hl.width, hlHeight = hl.height, hlItems = hl.items; - var lhWidth = lh.width, lhHeight = lh.height, lhItems = lh.items; - var hhWidth = hh.width, hhHeight = hh.height, hhItems = hh.items; + var width = hl_lh_hh.width; + var height = hl_lh_hh.height; + var items = hl_lh_hh.items; + var i, j, k, l, u, v; - // Section F.3.3 interleave - var width = llWidth + hlWidth; - var height = llHeight + lhHeight; - var items = new Float32Array(width * height); - for (var i = 0, ii = llHeight; i < ii; i++) { - var k = i * llWidth, l = i * 2 * width; - for (var j = 0, jj = llWidth; j < jj; j++, k++, l += 2) + // Interleave LL according to Section F.3.3 + for (k = 0, i = 0; i < llHeight; i++) { + l = i * 2 * width; + for (j = 0; j < llWidth; j++, k++, l += 2) { items[l] = llItems[k]; + } } - for (var i = 0, ii = hlHeight; i < ii; i++) { - var k = i * hlWidth, l = i * 2 * width + 1; - for (var j = 0, jj = hlWidth; j < jj; j++, k++, l += 2) - items[l] = hlItems[k]; - } - for (var i = 0, ii = lhHeight; i < ii; i++) { - var k = i * lhWidth, l = (i * 2 + 1) * width; - for (var j = 0, jj = lhWidth; j < jj; j++, k++, l += 2) - items[l] = lhItems[k]; - } - for (var i = 0, ii = hhHeight; i < ii; i++) { - var k = i * hhWidth, l = (i * 2 + 1) * width + 1; - for (var j = 0, jj = hhWidth; j < jj; j++, k++, l += 2) - items[l] = hhItems[k]; - } + // The LL band is not needed anymore. + llItems = ll.items = null; var bufferPadding = 4; - var bufferLength = new Float32Array(Math.max(width, height) + - 2 * bufferPadding); - var buffer = new Float32Array(bufferLength); - var bufferOut = new Float32Array(bufferLength); + var rowBuffer = new Float32Array(width + 2 * bufferPadding); // Section F.3.4 HOR_SR - for (var v = 0; v < height; v++) { - if (width == 1) { - // if width = 1, when u0 even keep items as is, when odd divide by 2 - if ((u0 % 1) !== 0) { - items[v * width] /= 2; + if (width === 1) { + // if width = 1, when u0 even keep items as is, when odd divide by 2 + if ((u0 & 1) !== 0) { + for (v = 0, k = 0; v < height; v++, k += width) { + items[k] *= 0.5; } - continue; } + } else { + for (v = 0, k = 0; v < height; v++, k += width) { + rowBuffer.set(items.subarray(k, k + width), bufferPadding); - var k = v * width; - var l = bufferPadding; - for (var u = 0; u < width; u++, k++, l++) - buffer[l] = items[k]; + this.extend(rowBuffer, bufferPadding, width); + this.filter(rowBuffer, bufferPadding, width); - this.expand(buffer, bufferPadding, width); - this.filter(buffer, bufferPadding, width, u0, bufferOut); - - k = v * width; - l = bufferPadding; - for (var u = 0; u < width; u++, k++, l++) - items[k] = bufferOut[l]; + items.set( + rowBuffer.subarray(bufferPadding, bufferPadding + width), + k); + } } + // Accesses to the items array can take long, because it may not fit into + // CPU cache and has to be fetched from main memory. Since subsequent + // accesses to the items array are not local when reading columns, we + // have a cache miss every time. To reduce cache misses, get up to + // 'numBuffers' items at a time and store them into the individual + // buffers. The colBuffers should be small enough to fit into CPU cache. + var numBuffers = 16; + var colBuffers = []; + for (i = 0; i < numBuffers; i++) { + colBuffers.push(new Float32Array(height + 2 * bufferPadding)); + } + var b, currentBuffer = 0; + ll = bufferPadding + height; + // Section F.3.5 VER_SR - for (var u = 0; u < width; u++) { - if (height == 1) { + if (height === 1) { // if height = 1, when v0 even keep items as is, when odd divide by 2 - if ((v0 % 1) !== 0) { - items[u] /= 2; + if ((v0 & 1) !== 0) { + for (u = 0; u < width; u++) { + items[u] *= 0.5; } - continue; } + } else { + for (u = 0; u < width; u++) { + // if we ran out of buffers, copy several image columns at once + if (currentBuffer === 0) { + numBuffers = Math.min(width - u, numBuffers); + for (k = u, l = bufferPadding; l < ll; k += width, l++) { + for (b = 0; b < numBuffers; b++) { + colBuffers[b][l] = items[k + b]; + } + } + currentBuffer = numBuffers; + } - var k = u; - var l = bufferPadding; - for (var v = 0; v < height; v++, k += width, l++) - buffer[l] = items[k]; + currentBuffer--; + var buffer = colBuffers[currentBuffer]; + this.extend(buffer, bufferPadding, height); + this.filter(buffer, bufferPadding, height); - this.expand(buffer, bufferPadding, height); - this.filter(buffer, bufferPadding, height, v0, bufferOut); - - k = u; - l = bufferPadding; - for (var v = 0; v < height; v++, k += width, l++) - items[k] = bufferOut[l]; + // If this is last buffer in this group of buffers, flush all buffers. + if (currentBuffer === 0) { + k = u - numBuffers + 1; + for (l = bufferPadding; l < ll; k += width, l++) { + for (b = 0; b < numBuffers; b++) { + items[k + b] = colBuffers[b][l]; + } + } + } + } } + return { width: width, height: height, @@ -36997,10 +36955,10 @@ var JpxImage = (function JpxImageClosure() { IrreversibleTransform.prototype = Object.create(Transform.prototype); IrreversibleTransform.prototype.filter = - function irreversibleTransformFilter(y, offset, length, i0, x) { - var i0_ = Math.floor(i0 / 2); - var i1_ = Math.floor((i0 + length) / 2); - var offset_ = offset - (i0 % 1); + function irreversibleTransformFilter(x, offset, length) { + var len = length >> 1; + offset = offset | 0; + var j, n, current, next; var alpha = -1.586134342059924; var beta = -0.052980118572961; @@ -37009,35 +36967,75 @@ var JpxImage = (function JpxImageClosure() { var K = 1.230174104914001; var K_ = 1 / K; - // step 1 - var j = offset_ - 2; - for (var n = i0_ - 1, nn = i1_ + 2; n < nn; n++, j += 2) - x[j] = K * y[j]; + // step 1 is combined with step 3 // step 2 - var j = offset_ - 3; - for (var n = i0_ - 2, nn = i1_ + 2; n < nn; n++, j += 2) - x[j] = K_ * y[j]; + j = offset - 3; + for (n = len + 4; n--; j += 2) { + x[j] *= K_; + } - // step 3 - var j = offset_ - 2; - for (var n = i0_ - 1, nn = i1_ + 2; n < nn; n++, j += 2) - x[j] -= delta * (x[j - 1] + x[j + 1]); + // step 1 & 3 + j = offset - 2; + current = delta * x[j -1]; + for (n = len + 3; n--; j += 2) { + next = delta * x[j + 1]; + x[j] = K * x[j] - current - next; + if (n--) { + j += 2; + current = delta * x[j + 1]; + x[j] = K * x[j] - current - next; + } else { + break; + } + } // step 4 - var j = offset_ - 1; - for (var n = i0_ - 1, nn = i1_ + 1; n < nn; n++, j += 2) - x[j] -= gamma * (x[j - 1] + x[j + 1]); + j = offset - 1; + current = gamma * x[j - 1]; + for (n = len + 2; n--; j += 2) { + next = gamma * x[j + 1]; + x[j] -= current + next; + if (n--) { + j += 2; + current = gamma * x[j + 1]; + x[j] -= current + next; + } else { + break; + } + } // step 5 - var j = offset_; - for (var n = i0_, nn = i1_ + 1; n < nn; n++, j += 2) - x[j] -= beta * (x[j - 1] + x[j + 1]); + j = offset; + current = beta * x[j - 1]; + for (n = len + 1; n--; j += 2) { + next = beta * x[j + 1]; + x[j] -= current + next; + if (n--) { + j += 2; + current = beta * x[j + 1]; + x[j] -= current + next; + } else { + break; + } + } // step 6 - var j = offset_ + 1; - for (var n = i0_, nn = i1_; n < nn; n++, j += 2) - x[j] -= alpha * (x[j - 1] + x[j + 1]); + if (len !== 0) { + j = offset + 1; + current = alpha * x[j - 1]; + for (n = len; n--; j += 2) { + next = alpha * x[j + 1]; + x[j] -= current + next; + if (n--) { + j += 2; + current = alpha * x[j + 1]; + x[j] -= current + next; + } else { + break; + } + } + } }; return IrreversibleTransform; @@ -37051,16 +37049,18 @@ var JpxImage = (function JpxImageClosure() { ReversibleTransform.prototype = Object.create(Transform.prototype); ReversibleTransform.prototype.filter = - function reversibleTransformFilter(y, offset, length, i0, x) { - var i0_ = Math.floor(i0 / 2); - var i1_ = Math.floor((i0 + length) / 2); - var offset_ = offset - (i0 % 1); + function reversibleTransformFilter(x, offset, length) { + var len = length >> 1; + offset = offset | 0; + var j, n; - for (var n = i0_, nn = i1_ + 1, j = offset_; n < nn; n++, j += 2) - x[j] = y[j] - Math.floor((y[j - 1] + y[j + 1] + 2) / 4); + for (j = offset, n = len + 1; n--; j += 2) { + x[j] -= (x[j - 1] + x[j + 1] + 2) >> 2; + } - for (var n = i0_, nn = i1_, j = offset_ + 1; n < nn; n++, j += 2) - x[j] = y[j] + Math.floor((x[j - 1] + x[j + 1]) / 2); + for (j = offset + 1, n = len; n--; j += 2) { + x[j] += (x[j - 1] + x[j + 1]) >> 1; + } }; return ReversibleTransform; @@ -37072,171 +37072,15 @@ var JpxImage = (function JpxImageClosure() { var Jbig2Image = (function Jbig2ImageClosure() { - - // Annex E. Arithmetic Coding - var ArithmeticDecoder = (function ArithmeticDecoderClosure() { - var QeTable = [ - {qe: 0x5601, nmps: 1, nlps: 1, switchFlag: 1}, - {qe: 0x3401, nmps: 2, nlps: 6, switchFlag: 0}, - {qe: 0x1801, nmps: 3, nlps: 9, switchFlag: 0}, - {qe: 0x0AC1, nmps: 4, nlps: 12, switchFlag: 0}, - {qe: 0x0521, nmps: 5, nlps: 29, switchFlag: 0}, - {qe: 0x0221, nmps: 38, nlps: 33, switchFlag: 0}, - {qe: 0x5601, nmps: 7, nlps: 6, switchFlag: 1}, - {qe: 0x5401, nmps: 8, nlps: 14, switchFlag: 0}, - {qe: 0x4801, nmps: 9, nlps: 14, switchFlag: 0}, - {qe: 0x3801, nmps: 10, nlps: 14, switchFlag: 0}, - {qe: 0x3001, nmps: 11, nlps: 17, switchFlag: 0}, - {qe: 0x2401, nmps: 12, nlps: 18, switchFlag: 0}, - {qe: 0x1C01, nmps: 13, nlps: 20, switchFlag: 0}, - {qe: 0x1601, nmps: 29, nlps: 21, switchFlag: 0}, - {qe: 0x5601, nmps: 15, nlps: 14, switchFlag: 1}, - {qe: 0x5401, nmps: 16, nlps: 14, switchFlag: 0}, - {qe: 0x5101, nmps: 17, nlps: 15, switchFlag: 0}, - {qe: 0x4801, nmps: 18, nlps: 16, switchFlag: 0}, - {qe: 0x3801, nmps: 19, nlps: 17, switchFlag: 0}, - {qe: 0x3401, nmps: 20, nlps: 18, switchFlag: 0}, - {qe: 0x3001, nmps: 21, nlps: 19, switchFlag: 0}, - {qe: 0x2801, nmps: 22, nlps: 19, switchFlag: 0}, - {qe: 0x2401, nmps: 23, nlps: 20, switchFlag: 0}, - {qe: 0x2201, nmps: 24, nlps: 21, switchFlag: 0}, - {qe: 0x1C01, nmps: 25, nlps: 22, switchFlag: 0}, - {qe: 0x1801, nmps: 26, nlps: 23, switchFlag: 0}, - {qe: 0x1601, nmps: 27, nlps: 24, switchFlag: 0}, - {qe: 0x1401, nmps: 28, nlps: 25, switchFlag: 0}, - {qe: 0x1201, nmps: 29, nlps: 26, switchFlag: 0}, - {qe: 0x1101, nmps: 30, nlps: 27, switchFlag: 0}, - {qe: 0x0AC1, nmps: 31, nlps: 28, switchFlag: 0}, - {qe: 0x09C1, nmps: 32, nlps: 29, switchFlag: 0}, - {qe: 0x08A1, nmps: 33, nlps: 30, switchFlag: 0}, - {qe: 0x0521, nmps: 34, nlps: 31, switchFlag: 0}, - {qe: 0x0441, nmps: 35, nlps: 32, switchFlag: 0}, - {qe: 0x02A1, nmps: 36, nlps: 33, switchFlag: 0}, - {qe: 0x0221, nmps: 37, nlps: 34, switchFlag: 0}, - {qe: 0x0141, nmps: 38, nlps: 35, switchFlag: 0}, - {qe: 0x0111, nmps: 39, nlps: 36, switchFlag: 0}, - {qe: 0x0085, nmps: 40, nlps: 37, switchFlag: 0}, - {qe: 0x0049, nmps: 41, nlps: 38, switchFlag: 0}, - {qe: 0x0025, nmps: 42, nlps: 39, switchFlag: 0}, - {qe: 0x0015, nmps: 43, nlps: 40, switchFlag: 0}, - {qe: 0x0009, nmps: 44, nlps: 41, switchFlag: 0}, - {qe: 0x0005, nmps: 45, nlps: 42, switchFlag: 0}, - {qe: 0x0001, nmps: 45, nlps: 43, switchFlag: 0}, - {qe: 0x5601, nmps: 46, nlps: 46, switchFlag: 0} - ]; - - function ArithmeticDecoder(data, start, end) { - this.data = data; - this.bp = start; - this.dataEnd = end; - - this.chigh = data[start]; - this.clow = 0; - - this.byteIn(); - - this.chigh = ((this.chigh << 7) & 0xFFFF) | ((this.clow >> 9) & 0x7F); - this.clow = (this.clow << 7) & 0xFFFF; - this.ct -= 7; - this.a = 0x8000; - } - - ArithmeticDecoder.prototype = { - byteIn: function ArithmeticDecoder_byteIn() { - var data = this.data; - var bp = this.bp; - if (data[bp] == 0xFF) { - var b1 = data[bp + 1]; - if (b1 > 0x8F) { - this.clow += 0xFF00; - this.ct = 8; - } else { - bp++; - this.clow += (data[bp] << 9); - this.ct = 7; - this.bp = bp; - } - } else { - bp++; - this.clow += bp < this.dataEnd ? (data[bp] << 8) : 0xFF00; - this.ct = 8; - this.bp = bp; - } - if (this.clow > 0xFFFF) { - this.chigh += (this.clow >> 16); - this.clow &= 0xFFFF; - } - }, - readBit: function ArithmeticDecoder_readBit(contexts, pos) { - // contexts are packed into 1 byte: - // highest 7 bits carry cx.index, lowest bit carries cx.mps - var cx_index = contexts[pos] >> 1, cx_mps = contexts[pos] & 1; - var qeTableIcx = QeTable[cx_index]; - var qeIcx = qeTableIcx.qe; - var nmpsIcx = qeTableIcx.nmps; - var nlpsIcx = qeTableIcx.nlps; - var switchIcx = qeTableIcx.switchFlag; - var d; - this.a -= qeIcx; - - if (this.chigh < qeIcx) { - // exchangeLps - if (this.a < qeIcx) { - this.a = qeIcx; - d = cx_mps; - cx_index = nmpsIcx; - } else { - this.a = qeIcx; - d = 1 - cx_mps; - if (switchIcx) { - cx_mps = d; - } - cx_index = nlpsIcx; - } - } else { - this.chigh -= qeIcx; - if ((this.a & 0x8000) !== 0) { - return cx_mps; - } - // exchangeMps - if (this.a < qeIcx) { - d = 1 - cx_mps; - if (switchIcx) { - cx_mps = d; - } - cx_index = nlpsIcx; - } else { - d = cx_mps; - cx_index = nmpsIcx; - } - } - // renormD; - do { - if (this.ct === 0) - this.byteIn(); - - this.a <<= 1; - this.chigh = ((this.chigh << 1) & 0xFFFF) | ((this.clow >> 15) & 1); - this.clow = (this.clow << 1) & 0xFFFF; - this.ct--; - } while ((this.a & 0x8000) === 0); - - contexts[pos] = cx_index << 1 | cx_mps; - return d; - } - }; - - return ArithmeticDecoder; - })(); - // Utility data structures function ContextCache() {} ContextCache.prototype = { getContexts: function(id) { - if (id in this) + if (id in this) { return this[id]; - return (this[id] = new Int8Array(1<<16)); + } + return (this[id] = new Int8Array(1 << 16)); } }; @@ -37261,58 +37105,32 @@ var Jbig2Image = (function Jbig2ImageClosure() { // A.2 Procedure for decoding values function decodeInteger(contextCache, procedure, decoder) { var contexts = contextCache.getContexts(procedure); - var prev = 1; - var state = 1, v = 0, s; - var toRead = 32, offset = 4436; // defaults for state 7 - while (state) { - var bit = decoder.readBit(contexts, prev); - prev = prev < 256 ? (prev << 1) | bit : - (((prev << 1) | bit) & 511) | 256; - switch (state) { - case 1: - s = !!bit; - break; - case 2: - if (bit) break; - state = 7; - toRead = 2; - offset = 0; - break; - case 3: - if (bit) break; - state = 7; - toRead = 4; - offset = 4; - break; - case 4: - if (bit) break; - state = 7; - toRead = 6; - offset = 20; - break; - case 5: - if (bit) break; - state = 7; - toRead = 8; - offset = 84; - break; - case 6: - if (bit) break; - state = 7; - toRead = 12; - offset = 340; - break; - default: - v = v * 2 + bit; - if (--toRead === 0) - state = 0; - continue; + + function readBits(length) { + var v = 0; + for (var i = 0; i < length; i++) { + var bit = decoder.readBit(contexts, prev); + prev = (prev < 256 ? (prev << 1) | bit : + (((prev << 1) | bit) & 511) | 256); + v = (v << 1) | bit; } - state++; + return v >>> 0; } - v += offset; - return !s ? v : v > 0 ? -v : null; + + var sign = readBits(1); + var value = readBits(1) ? + (readBits(1) ? + (readBits(1) ? + (readBits(1) ? + (readBits(1) ? + (readBits(32) + 4436) : + readBits(12) + 340) : + readBits(8) + 84) : + readBits(6) + 20) : + readBits(4) + 4) : + readBits(2); + return (sign === 0 ? value : (value > 0 ? -value : null)); } // A.3 The IAID decoding procedure @@ -37322,12 +37140,12 @@ var Jbig2Image = (function Jbig2ImageClosure() { var prev = 1; for (var i = 0; i < codeLength; i++) { var bit = decoder.readBit(contexts, prev); - prev = (prev * 2) + bit; + prev = (prev << 1) | bit; } - if (codeLength < 31) + if (codeLength < 31) { return prev & ((1 << codeLength) - 1); - else - return prev - Math.pow(2, codeLength); + } + return prev & 0x7FFFFFFF; } // 7.3 Segment types @@ -37374,11 +37192,12 @@ var Jbig2Image = (function Jbig2ImageClosure() { } ]; + // See 6.2.5.7 Decoding the bitmap. var ReusedContexts = [ - 0x1CD3, // '00111001101' (template) + '0011' (at), - 0x079A, // '001111001101' + '0', - 0x00E3, // '001110001' + '1', - 0x018B // '011000101' + '1' + 0x9B25, // 10011 0110010 0101 + 0x0795, // 0011 110010 101 + 0x00E5, // 001 11001 01 + 0x0195 // 011001 0101 ]; var RefinementReusedContexts = [ @@ -37386,79 +37205,162 @@ var Jbig2Image = (function Jbig2ImageClosure() { 0x0008 // '0000' + '001000' ]; - function log2(x) { - var n = 1, i = 0; - while (x > n) { - n <<= 1; - i++; + function decodeBitmapTemplate0(width, height, decodingContext) { + var decoder = decodingContext.decoder; + var contexts = decodingContext.contextCache.getContexts('GB'); + var contextLabel, i, j, pixel, row, row1, row2, bitmap = []; + + // ...ooooo.... + // ..ooooooo... Context template for current pixel (X) + // .ooooX...... (concatenate values of 'o'-pixels to get contextLabel) + var OLD_PIXEL_MASK = 0x7BF7; // 01111 0111111 0111 + + for (i = 0; i < height; i++) { + row = bitmap[i] = new Uint8Array(width); + row1 = (i < 1) ? row : bitmap[i - 1]; + row2 = (i < 2) ? row : bitmap[i - 2]; + + // At the beginning of each row: + // Fill contextLabel with pixels that are above/right of (X) + contextLabel = (row2[0] << 13) | (row2[1] << 12) | (row2[2] << 11) | + (row1[0] << 7) | (row1[1] << 6) | (row1[2] << 5) | + (row1[3] << 4); + + for (j = 0; j < width; j++) { + row[j] = pixel = decoder.readBit(contexts, contextLabel); + + // At each pixel: Clear contextLabel pixels that are shifted + // out of the context, then add new ones. + // If j + n is out of range at the right image border, then + // the undefined value of bitmap[i - 2][j + n] is shifted to 0 + contextLabel = ((contextLabel & OLD_PIXEL_MASK) << 1) | + (row2[j + 3] << 11) | (row1[j + 4] << 4) | pixel; + } } - return i; - } - function readInt32(data, start) { - return (data[start] << 24) | (data[start + 1] << 16) | - (data[start + 2] << 8) | data[start + 3]; - } - - function readUint32(data, start) { - var value = readInt32(data, start); - return value & 0x80000000 ? (value + 4294967296) : value; - } - - function readUint16(data, start) { - return (data[start] << 8) | data[start + 1]; - } - - function readInt8(data, start) { - return (data[start] << 24) >> 24; + return bitmap; } // 6.2 Generic Region Decoding Procedure function decodeBitmap(mmr, width, height, templateIndex, prediction, skip, at, decodingContext) { - if (mmr) + if (mmr) { error('JBIG2 error: MMR encoding is not supported'); + } + + // Use optimized version for the most common case + if (templateIndex === 0 && !skip && !prediction && at.length === 4 && + at[0].x === 3 && at[0].y === -1 && at[1].x === -3 && at[1].y === -1 && + at[2].x === 2 && at[2].y === -2 && at[3].x === -2 && at[3].y === -2) { + return decodeBitmapTemplate0(width, height, decodingContext); + } var useskip = !!skip; var template = CodingTemplates[templateIndex].concat(at); + + // Sorting is non-standard, and it is not required. But sorting increases + // the number of template bits that can be reused from the previous + // contextLabel in the main loop. + template.sort(function (a, b) { + return (a.y - b.y) || (a.x - b.x); + }); + var templateLength = template.length; - var templateX = new Int32Array(templateLength); - var templateY = new Int32Array(templateLength); - for (var k = 0; k < templateLength; k++) { + var templateX = new Int8Array(templateLength); + var templateY = new Int8Array(templateLength); + var changingTemplateEntries = []; + var reuseMask = 0, minX = 0, maxX = 0, minY = 0; + var c, k; + + for (k = 0; k < templateLength; k++) { templateX[k] = template[k].x; templateY[k] = template[k].y; + minX = Math.min(minX, template[k].x); + maxX = Math.max(maxX, template[k].x); + minY = Math.min(minY, template[k].y); + // Check if the template pixel appears in two consecutive context labels, + // so it can be reused. Otherwise, we add it to the list of changing + // template entries. + if (k < templateLength - 1 && + template[k].y === template[k + 1].y && + template[k].x === template[k + 1].x - 1) { + reuseMask |= 1 << (templateLength - 1 - k); + } else { + changingTemplateEntries.push(k); + } + } + var changingEntriesLength = changingTemplateEntries.length; + + var changingTemplateX = new Int8Array(changingEntriesLength); + var changingTemplateY = new Int8Array(changingEntriesLength); + var changingTemplateBit = new Uint16Array(changingEntriesLength); + for (c = 0; c < changingEntriesLength; c++) { + k = changingTemplateEntries[c]; + changingTemplateX[c] = template[k].x; + changingTemplateY[c] = template[k].y; + changingTemplateBit[c] = 1 << (templateLength - 1 - k); } + // Get the safe bounding box edges from the width, height, minX, maxX, minY + var sbb_left = -minX; + var sbb_top = -minY; + var sbb_right = width - maxX; + var pseudoPixelContext = ReusedContexts[templateIndex]; + var row = new Uint8Array(width); var bitmap = []; var decoder = decodingContext.decoder; var contexts = decodingContext.contextCache.getContexts('GB'); - var ltp = 0; + var ltp = 0, j, i0, j0, contextLabel = 0, bit, shift; for (var i = 0; i < height; i++) { if (prediction) { var sltp = decoder.readBit(contexts, pseudoPixelContext); ltp ^= sltp; + if (ltp) { + bitmap.push(row); // duplicate previous row + continue; + } } - if (ltp) { - bitmap.push(bitmap[bitmap.length - 1]); // duplicate previous row - continue; - } - var row = new Uint8Array(width); + row = new Uint8Array(row); bitmap.push(row); - for (var j = 0; j < width; j++) { + for (j = 0; j < width; j++) { if (useskip && skip[i][j]) { row[j] = 0; continue; } - var contextLabel = 0; - for (var k = 0; k < templateLength; k++) { - var i0 = i + templateY[k], j0 = j + templateX[k]; - if (i0 < 0 || j0 < 0 || j0 >= width) - contextLabel <<= 1; // out of bound pixel - else - contextLabel = (contextLabel << 1) | bitmap[i0][j0]; + // Are we in the middle of a scanline, so we can reuse contextLabel + // bits? + if (j >= sbb_left && j < sbb_right && i >= sbb_top) { + // If yes, we can just shift the bits that are reusable and only + // fetch the remaining ones. + contextLabel = (contextLabel << 1) & reuseMask; + for (k = 0; k < changingEntriesLength; k++) { + i0 = i + changingTemplateY[k]; + j0 = j + changingTemplateX[k]; + bit = bitmap[i0][j0]; + if (bit) { + bit = changingTemplateBit[k]; + contextLabel |= bit; + } + } + } else { + // compute the contextLabel from scratch + contextLabel = 0; + shift = templateLength - 1; + for (k = 0; k < templateLength; k++, shift--) { + j0 = j + templateX[k]; + if (j0 >= 0 && j0 < width) { + i0 = i + templateY[k]; + if (i0 >= 0) { + bit = bitmap[i0][j0]; + if (bit) { + contextLabel |= bit << shift; + } + } + } + } } var pixel = decoder.readBit(contexts, contextLabel); row[j] = pixel; @@ -37472,22 +37374,26 @@ var Jbig2Image = (function Jbig2ImageClosure() { offsetX, offsetY, prediction, at, decodingContext) { var codingTemplate = RefinementTemplates[templateIndex].coding; - if (templateIndex === 0) + if (templateIndex === 0) { codingTemplate = codingTemplate.concat([at[0]]); + } var codingTemplateLength = codingTemplate.length; var codingTemplateX = new Int32Array(codingTemplateLength); var codingTemplateY = new Int32Array(codingTemplateLength); - for (var k = 0; k < codingTemplateLength; k++) { + var k; + for (k = 0; k < codingTemplateLength; k++) { codingTemplateX[k] = codingTemplate[k].x; codingTemplateY[k] = codingTemplate[k].y; } + var referenceTemplate = RefinementTemplates[templateIndex].reference; - if (templateIndex === 0) + if (templateIndex === 0) { referenceTemplate = referenceTemplate.concat([at[1]]); + } var referenceTemplateLength = referenceTemplate.length; var referenceTemplateX = new Int32Array(referenceTemplateLength); var referenceTemplateY = new Int32Array(referenceTemplateLength); - for (var k = 0; k < referenceTemplateLength; k++) { + for (k = 0; k < referenceTemplateLength; k++) { referenceTemplateX[k] = referenceTemplate[k].x; referenceTemplateY[k] = referenceTemplate[k].y; } @@ -37505,28 +37411,33 @@ var Jbig2Image = (function Jbig2ImageClosure() { if (prediction) { var sltp = decoder.readBit(contexts, pseudoPixelContext); ltp ^= sltp; + if (ltp) { + error('JBIG2 error: prediction is not supported'); + } } var row = new Uint8Array(width); bitmap.push(row); for (var j = 0; j < width; j++) { - if (ltp) - error('JBIG2 error: prediction is not supported'); - + var i0, j0; var contextLabel = 0; - for (var k = 0; k < codingTemplateLength; k++) { - var i0 = i + codingTemplateY[k], j0 = j + codingTemplateX[k]; - if (i0 < 0 || j0 < 0 || j0 >= width) + for (k = 0; k < codingTemplateLength; k++) { + i0 = i + codingTemplateY[k]; + j0 = j + codingTemplateX[k]; + if (i0 < 0 || j0 < 0 || j0 >= width) { contextLabel <<= 1; // out of bound pixel - else + } else { contextLabel = (contextLabel << 1) | bitmap[i0][j0]; + } } - for (var k = 0; k < referenceTemplateLength; k++) { - var i0 = i + referenceTemplateY[k] + offsetY; - var j0 = j + referenceTemplateX[k] + offsetX; - if (i0 < 0 || i0 >= referenceHeight || j0 < 0 || j0 >= referenceWidth) + for (k = 0; k < referenceTemplateLength; k++) { + i0 = i + referenceTemplateY[k] + offsetY; + j0 = j + referenceTemplateX[k] + offsetX; + if (i0 < 0 || i0 >= referenceHeight || j0 < 0 || + j0 >= referenceWidth) { contextLabel <<= 1; // out of bound pixel - else + } else { contextLabel = (contextLabel << 1) | referenceBitmap[i0][j0]; + } } var pixel = decoder.readBit(contexts, contextLabel); row[j] = pixel; @@ -37542,8 +37453,9 @@ var Jbig2Image = (function Jbig2ImageClosure() { huffmanTables, templateIndex, at, refinementTemplateIndex, refinementAt, decodingContext) { - if (huffman) + if (huffman) { error('JBIG2 error: huffman is not supported'); + } var newSymbols = []; var currentHeight = 0; @@ -37559,24 +37471,38 @@ var Jbig2Image = (function Jbig2ImageClosure() { var totalWidth = 0; while (true) { var deltaWidth = decodeInteger(contextCache, 'IADW', decoder); // 6.5.7 - if (deltaWidth === null) + if (deltaWidth === null) { break; // OOB + } currentWidth += deltaWidth; totalWidth += currentWidth; var bitmap; if (refinement) { // 6.5.8.2 Refinement/aggregate-coded symbol bitmap var numberOfInstances = decodeInteger(contextCache, 'IAAI', decoder); - if (numberOfInstances > 1) - error('JBIG2 error: number of instances > 1 is not supported'); - var symbolId = decodeIAID(contextCache, decoder, symbolCodeLength); - var rdx = decodeInteger(contextCache, 'IARDX', decoder); // 6.4.11.3 - var rdy = decodeInteger(contextCache, 'IARDY', decoder); // 6.4.11.4 - var symbol = symbolId < symbols.length ? symbols[symbolId] : - newSymbols[symbolId - symbols.length]; - bitmap = decodeRefinement(currentWidth, currentHeight, + if (numberOfInstances > 1) { + bitmap = decodeTextRegion(huffman, refinement, + currentWidth, currentHeight, 0, + numberOfInstances, 1, //strip size + symbols.concat(newSymbols), + symbolCodeLength, + 0, //transposed + 0, //ds offset + 1, //top left 7.4.3.1.1 + 0, //OR operator + huffmanTables, + refinementTemplateIndex, refinementAt, + decodingContext); + } else { + var symbolId = decodeIAID(contextCache, decoder, symbolCodeLength); + var rdx = decodeInteger(contextCache, 'IARDX', decoder); // 6.4.11.3 + var rdy = decodeInteger(contextCache, 'IARDY', decoder); // 6.4.11.4 + var symbol = (symbolId < symbols.length ? symbols[symbolId] : + newSymbols[symbolId - symbols.length]); + bitmap = decodeRefinement(currentWidth, currentHeight, refinementTemplateIndex, symbol, rdx, rdy, false, refinementAt, decodingContext); + } } else { // 6.5.8.1 Direct-coded symbol bitmap bitmap = decodeBitmap(false, currentWidth, currentHeight, @@ -37591,14 +37517,21 @@ var Jbig2Image = (function Jbig2ImageClosure() { var totalSymbolsLength = symbols.length + numberOfNewSymbols; while (flags.length < totalSymbolsLength) { var runLength = decodeInteger(contextCache, 'IAEX', decoder); - while (runLength--) + while (runLength--) { flags.push(currentFlag); + } currentFlag = !currentFlag; } - for (var i = 0, ii = symbols.length; i < ii; i++) - if (flags[i]) exportedSymbols.push(symbols[i]); - for (var j = 0; j < numberOfNewSymbols; i++, j++) - if (flags[i]) exportedSymbols.push(newSymbols[j]); + for (var i = 0, ii = symbols.length; i < ii; i++) { + if (flags[i]) { + exportedSymbols.push(symbols[i]); + } + } + for (var j = 0; j < numberOfNewSymbols; i++, j++) { + if (flags[i]) { + exportedSymbols.push(newSymbols[j]); + } + } return exportedSymbols; } @@ -37609,16 +37542,19 @@ var Jbig2Image = (function Jbig2ImageClosure() { combinationOperator, huffmanTables, refinementTemplateIndex, refinementAt, decodingContext) { - if (huffman) + if (huffman) { error('JBIG2 error: huffman is not supported'); + } // Prepare bitmap var bitmap = []; - for (var i = 0; i < height; i++) { - var row = new Uint8Array(width); + var i, row; + for (i = 0; i < height; i++) { + row = new Uint8Array(width); if (defaultPixelValue) { - for (var j = 0; j < width; j++) + for (var j = 0; j < width; j++) { row[j] = defaultPixelValue; + } } bitmap.push(row); } @@ -37627,7 +37563,7 @@ var Jbig2Image = (function Jbig2ImageClosure() { var contextCache = decodingContext.contextCache; var stripT = -decodeInteger(contextCache, 'IADT', decoder); // 6.4.6 var firstS = 0; - var i = 0; + i = 0; while (i < numberOfSymbolInstances) { var deltaT = decodeInteger(contextCache, 'IADT', decoder); // 6.4.6 stripT += deltaT; @@ -37636,12 +37572,12 @@ var Jbig2Image = (function Jbig2ImageClosure() { firstS += deltaFirstS; var currentS = firstS; do { - var currentT = stripSize == 1 ? 0 : - decodeInteger(contextCache, 'IAIT', decoder); // 6.4.9 + var currentT = (stripSize === 1 ? 0 : + decodeInteger(contextCache, 'IAIT', decoder)); // 6.4.9 var t = stripSize * stripT + currentT; var symbolId = decodeIAID(contextCache, decoder, symbolCodeLength); - var applyRefinement = refinement && - decodeInteger(contextCache, 'IARI', decoder); + var applyRefinement = (refinement && + decodeInteger(contextCache, 'IARI', decoder)); var symbolBitmap = inputSymbols[symbolId]; var symbolWidth = symbolBitmap[0].length; var symbolHeight = symbolBitmap.length; @@ -37659,25 +37595,26 @@ var Jbig2Image = (function Jbig2ImageClosure() { } var offsetT = t - ((referenceCorner & 1) ? 0 : symbolHeight); var offsetS = currentS - ((referenceCorner & 2) ? symbolWidth : 0); + var s2, t2, symbolRow; if (transposed) { - // Place Symbol Bitmap from T1,S1 - for (var s2 = 0; s2 < symbolHeight; s2++) { - var row = bitmap[offsetS + s2]; + // Place Symbol Bitmap from T1,S1 + for (s2 = 0; s2 < symbolHeight; s2++) { + row = bitmap[offsetS + s2]; if (!row) { continue; } - var symbolRow = symbolBitmap[s2]; + symbolRow = symbolBitmap[s2]; // To ignore Parts of Symbol bitmap which goes // outside bitmap region var maxWidth = Math.min(width - offsetT, symbolWidth); switch (combinationOperator) { case 0: // OR - for (var t2 = 0; t2 < maxWidth; t2++) { + for (t2 = 0; t2 < maxWidth; t2++) { row[offsetT + t2] |= symbolRow[t2]; } break; case 2: // XOR - for (var t2 = 0; t2 < maxWidth; t2++) { + for (t2 = 0; t2 < maxWidth; t2++) { row[offsetT + t2] ^= symbolRow[t2]; } break; @@ -37688,20 +37625,20 @@ var Jbig2Image = (function Jbig2ImageClosure() { } currentS += symbolHeight - 1; } else { - for (var t2 = 0; t2 < symbolHeight; t2++) { - var row = bitmap[offsetT + t2]; + for (t2 = 0; t2 < symbolHeight; t2++) { + row = bitmap[offsetT + t2]; if (!row) { continue; } - var symbolRow = symbolBitmap[t2]; + symbolRow = symbolBitmap[t2]; switch (combinationOperator) { case 0: // OR - for (var s2 = 0; s2 < symbolWidth; s2++) { + for (s2 = 0; s2 < symbolWidth; s2++) { row[offsetS + s2] |= symbolRow[s2]; } break; case 2: // XOR - for (var s2 = 0; s2 < symbolWidth; s2++) { + for (s2 = 0; s2 < symbolWidth; s2++) { row[offsetS + s2] ^= symbolRow[s2]; } break; @@ -37714,8 +37651,9 @@ var Jbig2Image = (function Jbig2ImageClosure() { } i++; var deltaS = decodeInteger(contextCache, 'IADS', decoder); // 6.4.8 - if (deltaS === null) + if (deltaS === null) { break; // OOB + } currentS += deltaS + dsOffset; } while (true); } @@ -37727,47 +37665,53 @@ var Jbig2Image = (function Jbig2ImageClosure() { segmentHeader.number = readUint32(data, start); var flags = data[start + 4]; var segmentType = flags & 0x3F; - if (!SegmentTypes[segmentType]) + if (!SegmentTypes[segmentType]) { error('JBIG2 error: invalid segment type: ' + segmentType); + } segmentHeader.type = segmentType; segmentHeader.typeName = SegmentTypes[segmentType]; segmentHeader.deferredNonRetain = !!(flags & 0x80); + var pageAssociationFieldSize = !!(flags & 0x40); var referredFlags = data[start + 5]; var referredToCount = (referredFlags >> 5) & 7; var retainBits = [referredFlags & 31]; var position = start + 6; - if (referredFlags == 7) { - referredToCount = readInt32(data, position - 1) & 0x1FFFFFFF; + if (referredFlags === 7) { + referredToCount = readUint32(data, position - 1) & 0x1FFFFFFF; position += 3; var bytes = (referredToCount + 7) >> 3; retainBits[0] = data[position++]; while (--bytes > 0) { retainBits.push(data[position++]); } - } else if (referredFlags == 5 || referredFlags == 6) + } else if (referredFlags === 5 || referredFlags === 6) { error('JBIG2 error: invalid referred-to flags'); + } + segmentHeader.retainBits = retainBits; - var referredToSegmentNumberSize = segmentHeader.number <= 256 ? 1 : - segmentHeader.number <= 65536 ? 2 : 4; + var referredToSegmentNumberSize = (segmentHeader.number <= 256 ? 1 : + (segmentHeader.number <= 65536 ? 2 : 4)); var referredTo = []; - for (var i = 0; i < referredToCount; i++) { - var number = referredToSegmentNumberSize == 1 ? data[position] : - referredToSegmentNumberSize == 2 ? readUint16(data, position) : - readUint32(data, position); + var i, ii; + for (i = 0; i < referredToCount; i++) { + var number = (referredToSegmentNumberSize === 1 ? data[position] : + (referredToSegmentNumberSize === 2 ? readUint16(data, position) : + readUint32(data, position))); referredTo.push(number); position += referredToSegmentNumberSize; } segmentHeader.referredTo = referredTo; - if (!pageAssociationFieldSize) + if (!pageAssociationFieldSize) { segmentHeader.pageAssociation = data[position++]; - else { + } else { segmentHeader.pageAssociation = readUint32(data, position); position += 4; } segmentHeader.length = readUint32(data, position); position += 4; - if (segmentHeader.length == 0xFFFFFFFF) { + + if (segmentHeader.length === 0xFFFFFFFF) { // 7.2.7 Segment data length, unknown segment length if (segmentType === 38) { // ImmediateGenericRegion var genericRegionInfo = readRegionSegmentInformation(data, position); @@ -37785,17 +37729,17 @@ var Jbig2Image = (function Jbig2ImageClosure() { searchPattern[3] = (genericRegionInfo.height >> 16) & 0xFF; searchPattern[4] = (genericRegionInfo.height >> 8) & 0xFF; searchPattern[5] = genericRegionInfo.height & 0xFF; - for (var i = position, ii = data.length; i < ii; i++) { + for (i = position, ii = data.length; i < ii; i++) { var j = 0; while (j < searchPatternLength && searchPattern[j] === data[i + j]) { j++; } - if (j == searchPatternLength) { + if (j === searchPatternLength) { segmentHeader.length = i + searchPatternLength; break; } } - if (segmentHeader.length == 0xFFFFFFFF) { + if (segmentHeader.length === 0xFFFFFFFF) { error('JBIG2 error: segment end was not found'); } } else { @@ -37822,8 +37766,9 @@ var Jbig2Image = (function Jbig2ImageClosure() { segment.end = position; } segments.push(segment); - if (segmentHeader.type == 51) + if (segmentHeader.type === 51) { break; // end of file is found + } } if (header.randomAccess) { for (var i = 0, ii = segments.length; i < ii; i++) { @@ -37851,7 +37796,7 @@ var Jbig2Image = (function Jbig2ImageClosure() { var header = segment.header; var data = segment.data, position = segment.start, end = segment.end; - var args; + var args, at, i, atLength; switch (header.type) { case 0: // SymbolDictionary // 7.4.2 Symbol dictionary segment syntax @@ -37869,9 +37814,9 @@ var Jbig2Image = (function Jbig2ImageClosure() { dictionary.refinementTemplate = (dictionaryFlags >> 12) & 1; position += 2; if (!dictionary.huffman) { - var atLength = dictionary.template === 0 ? 4 : 1; - var at = []; - for (var i = 0; i < atLength; i++) { + atLength = dictionary.template === 0 ? 4 : 1; + at = []; + for (i = 0; i < atLength; i++) { at.push({ x: readInt8(data, position), y: readInt8(data, position + 1) @@ -37881,8 +37826,8 @@ var Jbig2Image = (function Jbig2ImageClosure() { dictionary.at = at; } if (dictionary.refinement && !dictionary.refinementTemplate) { - var at = []; - for (var i = 0; i < 2; i++) { + at = []; + for (i = 0; i < 2; i++) { at.push({ x: readInt8(data, position), y: readInt8(data, position + 1) @@ -37928,8 +37873,8 @@ var Jbig2Image = (function Jbig2ImageClosure() { !!(textRegionHuffmanFlags & 14); } if (textRegion.refinement && !textRegion.refinementTemplate) { - var at = []; - for (var i = 0; i < 2; i++) { + at = []; + for (i = 0; i < 2; i++) { at.push({ x: readInt8(data, position), y: readInt8(data, position + 1) @@ -37941,8 +37886,9 @@ var Jbig2Image = (function Jbig2ImageClosure() { textRegion.numberOfSymbolInstances = readUint32(data, position); position += 4; // TODO 7.4.3.1.7 Symbol ID Huffman table decoding - if (textRegion.huffman) + if (textRegion.huffman) { error('JBIG2 error: huffman is not supported'); + } args = [textRegion, header.referredTo, data, position, end]; break; case 38: // ImmediateGenericRegion @@ -37955,9 +37901,9 @@ var Jbig2Image = (function Jbig2ImageClosure() { genericRegion.template = (genericRegionSegmentFlags >> 1) & 3; genericRegion.prediction = !!(genericRegionSegmentFlags & 8); if (!genericRegion.mmr) { - var atLength = genericRegion.template === 0 ? 4 : 1; - var at = []; - for (var i = 0; i < atLength; i++) { + atLength = genericRegion.template === 0 ? 4 : 1; + at = []; + for (i = 0; i < atLength; i++) { at.push({ x: readInt8(data, position), y: readInt8(data, position + 1) @@ -37975,8 +37921,9 @@ var Jbig2Image = (function Jbig2ImageClosure() { resolutionX: readUint32(data, position + 8), resolutionY: readUint32(data, position + 12) }; - if (pageInfo.height == 0xFFFFFFFF) + if (pageInfo.height === 0xFFFFFFFF) { delete pageInfo.height; + } var pageSegmentFlags = data[position + 16]; var pageStripingInformatiom = readUint16(data, position + 17); pageInfo.lossless = !!(pageSegmentFlags & 1); @@ -38001,22 +37948,25 @@ var Jbig2Image = (function Jbig2ImageClosure() { header.type + ') is not implemented'); } var callbackName = 'on' + header.typeName; - if (callbackName in visitor) + if (callbackName in visitor) { visitor[callbackName].apply(visitor, args); + } } function processSegments(segments, visitor) { - for (var i = 0, ii = segments.length; i < ii; i++) + for (var i = 0, ii = segments.length; i < ii; i++) { processSegment(segments[i], visitor); + } } function parseJbig2(data, start, end) { var position = start; - if (data[position] != 0x97 || data[position + 1] != 0x4A || - data[position + 2] != 0x42 || data[position + 3] != 0x32 || - data[position + 4] != 0x0D || data[position + 5] != 0x0A || - data[position + 6] != 0x1A || data[position + 7] != 0x0A) + if (data[position] !== 0x97 || data[position + 1] !== 0x4A || + data[position + 2] !== 0x42 || data[position + 3] !== 0x32 || + data[position + 4] !== 0x0D || data[position + 5] !== 0x0A || + data[position + 6] !== 0x1A || data[position + 7] !== 0x0A) { error('JBIG2 error: invalid header'); + } var header = {}; position += 8; var flags = data[position++]; @@ -38047,9 +37997,13 @@ var Jbig2Image = (function Jbig2ImageClosure() { this.currentPageInfo = info; var rowSize = (info.width + 7) >> 3; var buffer = new Uint8Array(rowSize * info.height); - var fill = info.defaultPixelValue ? 0xFF : 0; - for (var i = 0, ii = buffer.length; i < ii; i++) - buffer[i] = fill; + // The contents of ArrayBuffers are initialized to 0. + // Fill the buffer with 0xFF only if info.defaultPixelValue is set + if (info.defaultPixelValue) { + for (var i = 0, ii = buffer.length; i < ii; i++) { + buffer[i] = 0xFF; + } + } this.buffer = buffer; }, drawBitmap: function SimpleSegmentVisitor_drawBitmap(regionInfo, bitmap) { @@ -38059,34 +38013,47 @@ var Jbig2Image = (function Jbig2ImageClosure() { var combinationOperator = pageInfo.combinationOperatorOverride ? regionInfo.combinationOperator : pageInfo.combinationOperator; var buffer = this.buffer; - for (var i = 0; i < height; i++) { - var mask = 128 >> (regionInfo.x & 7); - var offset = (i + regionInfo.y) * rowSize + (regionInfo.x >> 3); - switch (combinationOperator) { - case 0: // OR - for (var j = 0; j < width; j++) { - buffer[offset] |= bitmap[i][j] ? mask : 0; + var mask0 = 128 >> (regionInfo.x & 7); + var offset0 = regionInfo.y * rowSize + (regionInfo.x >> 3); + var i, j, mask, offset; + switch (combinationOperator) { + case 0: // OR + for (i = 0; i < height; i++) { + mask = mask0; + offset = offset0; + for (j = 0; j < width; j++) { + if (bitmap[i][j]) { + buffer[offset] |= mask; + } mask >>= 1; if (!mask) { mask = 128; offset++; } } - break; - case 2: // XOR - for (var j = 0; j < width; j++) { - buffer[offset] ^= bitmap[i][j] ? mask : 0; + offset0 += rowSize; + } + break; + case 2: // XOR + for (i = 0; i < height; i++) { + mask = mask0; + offset = offset0; + for (j = 0; j < width; j++) { + if (bitmap[i][j]) { + buffer[offset] ^= mask; + } mask >>= 1; if (!mask) { mask = 128; offset++; } } - break; - default: - error('JBIG2 error: operator ' + combinationOperator + - ' is not supported'); - } + offset0 += rowSize; + } + break; + default: + error('JBIG2 error: operator ' + combinationOperator + + ' is not supported'); } }, onImmediateGenericRegion: @@ -38109,17 +38076,20 @@ var Jbig2Image = (function Jbig2ImageClosure() { referredSegments, data, start, end) { var huffmanTables; - if (dictionary.huffman) + if (dictionary.huffman) { error('JBIG2 error: huffman is not supported'); + } // Combines exported symbols from all referred segments var symbols = this.symbols; - if (!symbols) + if (!symbols) { this.symbols = symbols = {}; + } var inputSymbols = []; - for (var i = 0, ii = referredSegments.length; i < ii; i++) + for (var i = 0, ii = referredSegments.length; i < ii; i++) { inputSymbols = inputSymbols.concat(symbols[referredSegments[i]]); + } var decodingContext = new DecodingContext(data, start, end); symbols[currentSegment] = decodeSymbolDictionary(dictionary.huffman, @@ -38139,8 +38109,9 @@ var Jbig2Image = (function Jbig2ImageClosure() { // Combines exported symbols from all referred segments var symbols = this.symbols; var inputSymbols = []; - for (var i = 0, ii = referredSegments.length; i < ii; i++) + for (var i = 0, ii = referredSegments.length; i < ii; i++) { inputSymbols = inputSymbols.concat(symbols[referredSegments[i]]); + } var symbolCodeLength = log2(inputSymbols.length); var decodingContext = new DecodingContext(data, start, end); @@ -38154,7 +38125,7 @@ var Jbig2Image = (function Jbig2ImageClosure() { }, onImmediateLosslessTextRegion: function SimpleSegmentVisitor_onImmediateLosslessTextRegion() { - this.onImmediateTextRegion.apply(this, arguments); + this.onImmediateTextRegion.apply(this, arguments); } }; @@ -38229,10 +38200,10 @@ var bidi = PDFJS.bidi = (function bidiClosure() { } function findUnequal(arr, start, value) { - var j; for (var j = start, jj = arr.length; j < jj; ++j) { - if (arr[j] != value) + if (arr[j] !== value) { return j; + } } return j; } @@ -38251,94 +38222,61 @@ var bidi = PDFJS.bidi = (function bidiClosure() { } } - function mirrorGlyphs(c) { - /* - # BidiMirroring-1.txt - 0028; 0029 # LEFT PARENTHESIS - 0029; 0028 # RIGHT PARENTHESIS - 003C; 003E # LESS-THAN SIGN - 003E; 003C # GREATER-THAN SIGN - 005B; 005D # LEFT SQUARE BRACKET - 005D; 005B # RIGHT SQUARE BRACKET - 007B; 007D # LEFT CURLY BRACKET - 007D; 007B # RIGHT CURLY BRACKET - 00AB; 00BB # LEFT-POINTING DOUBLE ANGLE QUOTATION MARK - 00BB; 00AB # RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK - */ - switch (c) { - case '(': - return ')'; - case ')': - return '('; - case '<': - return '>'; - case '>': - return '<'; - case ']': - return '['; - case '[': - return ']'; - case '}': - return '{'; - case '{': - return '}'; - case '\u00AB': - return '\u00BB'; - case '\u00BB': - return '\u00AB'; - default: - return c; - } + function createBidiText(str, isLTR, vertical) { + return { + str: str, + dir: (vertical ? 'ttb' : (isLTR ? 'ltr' : 'rtl')) + }; } - function BidiResult(str, isLTR, vertical) { - this.str = str; - this.dir = vertical ? 'ttb' : isLTR ? 'ltr' : 'rtl'; - } + // These are used in bidi(), which is called frequently. We re-use them on + // each call to avoid unnecessary allocations. + var chars = []; + var types = []; function bidi(str, startLevel, vertical) { var isLTR = true; var strLength = str.length; - if (strLength === 0 || vertical) - return new BidiResult(str, isLTR, vertical); + if (strLength === 0 || vertical) { + return createBidiText(str, isLTR, vertical); + } - // get types, fill arrays - - var chars = []; - var types = []; - var oldtypes = []; + // Get types and fill arrays + chars.length = strLength; + types.length = strLength; var numBidi = 0; - for (var i = 0; i < strLength; ++i) { + var i, ii; + for (i = 0; i < strLength; ++i) { chars[i] = str.charAt(i); var charCode = str.charCodeAt(i); var charType = 'L'; - if (charCode <= 0x00ff) + if (charCode <= 0x00ff) { charType = baseTypes[charCode]; - else if (0x0590 <= charCode && charCode <= 0x05f4) + } else if (0x0590 <= charCode && charCode <= 0x05f4) { charType = 'R'; - else if (0x0600 <= charCode && charCode <= 0x06ff) + } else if (0x0600 <= charCode && charCode <= 0x06ff) { charType = arabicTypes[charCode & 0xff]; - else if (0x0700 <= charCode && charCode <= 0x08AC) + } else if (0x0700 <= charCode && charCode <= 0x08AC) { charType = 'AL'; - - if (charType == 'R' || charType == 'AL' || charType == 'AN') + } + if (charType === 'R' || charType === 'AL' || charType === 'AN') { numBidi++; - - oldtypes[i] = types[i] = charType; + } + types[i] = charType; } - // detect the bidi method - // if there are no rtl characters then no bidi needed - // if less than 30% chars are rtl then string is primarily ltr - // if more than 30% chars are rtl then string is primarily rtl + // Detect the bidi method + // - If there are no rtl characters then no bidi needed + // - If less than 30% chars are rtl then string is primarily ltr + // - If more than 30% chars are rtl then string is primarily rtl if (numBidi === 0) { isLTR = true; - return new BidiResult(str, isLTR); + return createBidiText(str, isLTR); } - if (startLevel == -1) { + if (startLevel === -1) { if ((strLength / numBidi) < 0.3) { isLTR = true; startLevel = 0; @@ -38349,16 +38287,14 @@ var bidi = PDFJS.bidi = (function bidiClosure() { } var levels = []; - - for (var i = 0; i < strLength; ++i) { + for (i = 0; i < strLength; ++i) { levels[i] = startLevel; } /* X1-X10: skip most of this, since we are NOT doing the embeddings. */ - - var e = isOdd(startLevel) ? 'R' : 'L'; + var e = (isOdd(startLevel) ? 'R' : 'L'); var sor = e; var eor = sor; @@ -38367,13 +38303,13 @@ var bidi = PDFJS.bidi = (function bidiClosure() { type of the NSM to the type of the previous character. If the NSM is at the start of the level run, it will get the type of sor. */ - var lastType = sor; - for (var i = 0; i < strLength; ++i) { - if (types[i] == 'NSM') + for (i = 0; i < strLength; ++i) { + if (types[i] === 'NSM') { types[i] = lastType; - else + } else { lastType = types[i]; + } } /* @@ -38381,24 +38317,25 @@ var bidi = PDFJS.bidi = (function bidiClosure() { first strong type (R, L, AL, or sor) is found. If an AL is found, change the type of the European number to Arabic number. */ - - var lastType = sor; - for (var i = 0; i < strLength; ++i) { - var t = types[i]; - if (t == 'EN') - types[i] = (lastType == 'AL') ? 'AN' : 'EN'; - else if (t == 'R' || t == 'L' || t == 'AL') + lastType = sor; + var t; + for (i = 0; i < strLength; ++i) { + t = types[i]; + if (t === 'EN') { + types[i] = (lastType === 'AL') ? 'AN' : 'EN'; + } else if (t === 'R' || t === 'L' || t === 'AL') { lastType = t; + } } /* W3. Change all ALs to R. */ - - for (var i = 0; i < strLength; ++i) { - var t = types[i]; - if (t == 'AL') + for (i = 0; i < strLength; ++i) { + t = types[i]; + if (t === 'AL') { types[i] = 'R'; + } } /* @@ -38406,32 +38343,36 @@ var bidi = PDFJS.bidi = (function bidiClosure() { European number. A single common separator between two numbers of the same type changes to that type: */ - - for (var i = 1; i < strLength - 1; ++i) { - if (types[i] == 'ES' && types[i - 1] == 'EN' && types[i + 1] == 'EN') + for (i = 1; i < strLength - 1; ++i) { + if (types[i] === 'ES' && types[i - 1] === 'EN' && types[i + 1] === 'EN') { types[i] = 'EN'; - if (types[i] == 'CS' && (types[i - 1] == 'EN' || types[i - 1] == 'AN') && - types[i + 1] == types[i - 1]) + } + if (types[i] === 'CS' && + (types[i - 1] === 'EN' || types[i - 1] === 'AN') && + types[i + 1] === types[i - 1]) { types[i] = types[i - 1]; + } } /* W5. A sequence of European terminators adjacent to European numbers changes to all European numbers: */ - - for (var i = 0; i < strLength; ++i) { - if (types[i] == 'EN') { + for (i = 0; i < strLength; ++i) { + if (types[i] === 'EN') { // do before - for (var j = i - 1; j >= 0; --j) { - if (types[j] != 'ET') + var j; + for (j = i - 1; j >= 0; --j) { + if (types[j] !== 'ET') { break; + } types[j] = 'EN'; } // do after - for (var j = i + 1; j < strLength; --j) { - if (types[j] != 'ET') + for (j = i + 1; j < strLength; --j) { + if (types[j] !== 'ET') { break; + } types[j] = 'EN'; } } @@ -38440,11 +38381,11 @@ var bidi = PDFJS.bidi = (function bidiClosure() { /* W6. Otherwise, separators and terminators change to Other Neutral: */ - - for (var i = 0; i < strLength; ++i) { - var t = types[i]; - if (t == 'WS' || t == 'ES' || t == 'ET' || t == 'CS') + for (i = 0; i < strLength; ++i) { + t = types[i]; + if (t === 'WS' || t === 'ES' || t === 'ET' || t === 'CS') { types[i] = 'ON'; + } } /* @@ -38452,14 +38393,14 @@ var bidi = PDFJS.bidi = (function bidiClosure() { first strong type (R, L, or sor) is found. If an L is found, then change the type of the European number to L. */ - - var lastType = sor; - for (var i = 0; i < strLength; ++i) { - var t = types[i]; - if (t == 'EN') - types[i] = (lastType == 'L') ? 'L' : 'EN'; - else if (t == 'R' || t == 'L') + lastType = sor; + for (i = 0; i < strLength; ++i) { + t = types[i]; + if (t === 'EN') { + types[i] = ((lastType === 'L') ? 'L' : 'EN'); + } else if (t === 'R' || t === 'L') { lastType = t; + } } /* @@ -38468,22 +38409,27 @@ var bidi = PDFJS.bidi = (function bidiClosure() { numbers are treated as though they were R. Start-of-level-run (sor) and end-of-level-run (eor) are used at level run boundaries. */ - - for (var i = 0; i < strLength; ++i) { - if (types[i] == 'ON') { + for (i = 0; i < strLength; ++i) { + if (types[i] === 'ON') { var end = findUnequal(types, i + 1, 'ON'); var before = sor; - if (i > 0) + if (i > 0) { before = types[i - 1]; + } + var after = eor; - if (end + 1 < strLength) + if (end + 1 < strLength) { after = types[end + 1]; - if (before != 'L') + } + if (before !== 'L') { before = 'R'; - if (after != 'L') + } + if (after !== 'L') { after = 'R'; - if (before == after) + } + if (before === after) { setValues(types, i, end, before); + } i = end - 1; // reset to end (-1 so next iteration is ok) } } @@ -38491,10 +38437,10 @@ var bidi = PDFJS.bidi = (function bidiClosure() { /* N2. Any remaining neutrals take the embedding direction. */ - - for (var i = 0; i < strLength; ++i) { - if (types[i] == 'ON') + for (i = 0; i < strLength; ++i) { + if (types[i] === 'ON') { types[i] = e; + } } /* @@ -38504,17 +38450,16 @@ var bidi = PDFJS.bidi = (function bidiClosure() { I2. For all characters with an odd (right-to-left) embedding direction, those of type L, EN or AN go up one level. */ - - for (var i = 0; i < strLength; ++i) { - var t = types[i]; + for (i = 0; i < strLength; ++i) { + t = types[i]; if (isEven(levels[i])) { - if (t == 'R') { + if (t === 'R') { levels[i] += 1; - } else if (t == 'AN' || t == 'EN') { + } else if (t === 'AN' || t === 'EN') { levels[i] += 2; } - } else { // isOdd, so - if (t == 'L' || t == 'AN' || t == 'EN') { + } else { // isOdd + if (t === 'L' || t === 'AN' || t === 'EN') { levels[i] += 1; } } @@ -38540,23 +38485,24 @@ var bidi = PDFJS.bidi = (function bidiClosure() { */ // find highest level & lowest odd level - var highestLevel = -1; var lowestOddLevel = 99; - for (var i = 0, ii = levels.length; i < ii; ++i) { - var level = levels[i]; - if (highestLevel < level) + var level; + for (i = 0, ii = levels.length; i < ii; ++i) { + level = levels[i]; + if (highestLevel < level) { highestLevel = level; - if (lowestOddLevel > level && isOdd(level)) + } + if (lowestOddLevel > level && isOdd(level)) { lowestOddLevel = level; + } } // now reverse between those limits - - for (var level = highestLevel; level >= lowestOddLevel; --level) { + for (level = highestLevel; level >= lowestOddLevel; --level) { // find segments to reverse var start = -1; - for (var i = 0, ii = levels.length; i < ii; ++i) { + for (i = 0, ii = levels.length; i < ii; ++i) { if (levels[i] < level) { if (start >= 0) { reverseValues(chars, start, i); @@ -38589,1414 +38535,185 @@ var bidi = PDFJS.bidi = (function bidiClosure() { // don't mirror as characters are already mirrored in the pdf // Finally, return string - var result = ''; - for (var i = 0, ii = chars.length; i < ii; ++i) { + for (i = 0, ii = chars.length; i < ii; ++i) { var ch = chars[i]; - if (ch != '<' && ch != '>') + if (ch !== '<' && ch !== '>') { result += ch; + } } - - return new BidiResult(result, isLTR); + return createBidiText(result, isLTR); } return bidi; })(); - -var CMAP_CODESPACES = { - 'Adobe-CNS1-0': [[], [0, 14335]], - 'Adobe-CNS1-1': [[], [0, 17407]], - 'Adobe-CNS1-2': [[], [0, 17663]], - 'Adobe-CNS1-3': [[], [0, 18943]], - 'Adobe-CNS1-4': [[], [0, 19199]], - 'Adobe-CNS1-5': [[], [0, 19199]], - 'Adobe-CNS1-6': [[], [0, 19199]], - 'Adobe-CNS1-UCS2': [[], [0, 65535]], - 'B5-H': [[0, 128], [41280, 65278]], - 'B5-V': [[0, 128], [41280, 65278]], - 'B5pc-H': [[0, 128, 253, 255], [41280, 64766]], - 'B5pc-V': [[0, 128, 253, 255], [41280, 64766]], - 'CNS-EUC-H': [[0, 128], [41377, 65278], [], - [2392957345, 2392981246, 2393022881, 2393046782, 2393088417, 2393112318]], - 'CNS-EUC-V': [[0, 128], [41377, 65278], [], - [2392957345, 2392981246, 2393022881, 2393046782, 2393088417, 2393112318]], - 'CNS1-H': [[], [8481, 32382]], - 'CNS1-V': [[], [8481, 32382]], - 'CNS2-H': [[], [8481, 32382]], - 'CNS2-V': [[], [8481, 32382]], - 'ETen-B5-H': [[0, 128], [41280, 65278]], - 'ETen-B5-V': [[0, 128], [41280, 65278]], - 'ETenms-B5-H': [[0, 128], [41280, 65278]], - 'ETenms-B5-V': [[0, 128], [41280, 65278]], - 'ETHK-B5-H': [[0, 128], [34624, 65278]], - 'ETHK-B5-V': [[0, 128], [34624, 65278]], - 'HKdla-B5-H': [[0, 128], [41280, 65278]], - 'HKdla-B5-V': [[0, 128], [41280, 65278]], - 'HKdlb-B5-H': [[0, 128], [36416, 65278]], - 'HKdlb-B5-V': [[0, 128], [36416, 65278]], - 'HKgccs-B5-H': [[0, 128], [35392, 65278]], - 'HKgccs-B5-V': [[0, 128], [35392, 65278]], - 'HKm314-B5-H': [[0, 128], [41280, 65278]], - 'HKm314-B5-V': [[0, 128], [41280, 65278]], - 'HKm471-B5-H': [[0, 128], [41280, 65278]], - 'HKm471-B5-V': [[0, 128], [41280, 65278]], - 'HKscs-B5-H': [[0, 128], [34624, 65278]], - 'HKscs-B5-V': [[0, 128], [34624, 65278]], - 'UniCNS-UCS2-H': [[], [0, 55295, 57344, 65535]], - 'UniCNS-UCS2-V': [[], [0, 55295, 57344, 65535]], - 'UniCNS-UTF16-H': [[], [0, 55295, 57344, 65535], [], - [3623934976, 3690979327]], - 'UniCNS-UTF16-V': [[], [0, 55295, 57344, 65535], [], - [3623934976, 3690979327]], - 'Adobe-GB1-0': [[], [0, 7935]], - 'Adobe-GB1-1': [[], [0, 9983]], - 'Adobe-GB1-2': [[], [0, 22271]], - 'Adobe-GB1-3': [[], [0, 22527]], - 'Adobe-GB1-4': [[], [0, 29183]], - 'Adobe-GB1-5': [[], [0, 30463]], - 'Adobe-GB1-UCS2': [[], [0, 65535]], - 'GB-EUC-H': [[0, 128], [41377, 65278]], - 'GB-EUC-V': [[0, 128], [41377, 65278]], - 'GB-H': [[], [8481, 32382]], - 'GB-V': [[], [8481, 32382]], - 'GBK-EUC-H': [[0, 128], [33088, 65278]], - 'GBK-EUC-V': [[0, 128], [33088, 65278]], - 'GBK2K-H': [[0, 127], [33088, 65278], [], [2167439664, 4265213497]], - 'GBK2K-V': [[0, 127], [33088, 65278], [], [2167439664, 4265213497]], - 'GBKp-EUC-H': [[0, 128], [33088, 65278]], - 'GBKp-EUC-V': [[0, 128], [33088, 65278]], - 'GBpc-EUC-H': [[0, 128, 253, 255], [41377, 64766]], - 'GBpc-EUC-V': [[0, 128, 253, 255], [41377, 64766]], - 'GBT-EUC-H': [[0, 128], [41377, 65278]], - 'GBT-EUC-V': [[0, 128], [41377, 65278]], - 'GBT-H': [[], [8481, 32382]], - 'GBT-V': [[], [8481, 32382]], - 'GBTpc-EUC-H': [[0, 128, 253, 255], [41377, 64766]], - 'GBTpc-EUC-V': [[0, 128, 253, 255], [41377, 64766]], - 'UniGB-UCS2-H': [[], [0, 55295, 57344, 65535]], - 'UniGB-UCS2-V': [[], [0, 55295, 57344, 65535]], - 'UniGB-UTF16-H': [[], [0, 55295, 57344, 65535], [], [3623934976, 3690979327]], - 'UniGB-UTF16-V': [[], [0, 55295, 57344, 65535], [], [3623934976, 3690979327]], - '78-EUC-H': [[0, 128], [36512, 36575, 41377, 65278]], - '78-EUC-V': [[0, 128], [36512, 36575, 41377, 65278]], - '78-H': [[], [8481, 32382]], - '78-RKSJ-H': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]], - '78-RKSJ-V': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]], - '78-V': [[], [8481, 32382]], - '78ms-RKSJ-H': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]], - '78ms-RKSJ-V': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]], - '83pv-RKSJ-H': [[0, 128, 160, 223, 253, 255], [33088, 40956, 57408, 64764]], - '90ms-RKSJ-H': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]], - '90ms-RKSJ-V': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]], - '90msp-RKSJ-H': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]], - '90msp-RKSJ-V': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]], - '90pv-RKSJ-H': [[0, 128, 160, 223, 253, 255], [33088, 40956, 57408, 64764]], - '90pv-RKSJ-V': [[0, 128, 160, 223, 253, 255], [33088, 40956, 57408, 64764]], - 'Add-H': [[], [8481, 32382]], - 'Add-RKSJ-H': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]], - 'Add-RKSJ-V': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]], - 'Add-V': [[], [8481, 32382]], - 'Adobe-Japan1-0': [[], [0, 8447]], - 'Adobe-Japan1-1': [[], [0, 8447]], - 'Adobe-Japan1-2': [[], [0, 8959]], - 'Adobe-Japan1-3': [[], [0, 9471]], - 'Adobe-Japan1-4': [[], [0, 15615]], - 'Adobe-Japan1-5': [[], [0, 20479]], - 'Adobe-Japan1-6': [[], [0, 23295]], - 'Adobe-Japan1-UCS2': [[], [0, 65535]], - 'Adobe-Japan2-0': [[], [0, 6143]], - 'EUC-H': [[0, 128], [36512, 36575, 41377, 65278]], - 'EUC-V': [[0, 128], [36512, 36575, 41377, 65278]], - 'Ext-H': [[], [8481, 32382]], - 'Ext-RKSJ-H': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]], - 'Ext-RKSJ-V': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]], - 'Ext-V': [[], [8481, 32382]], - 'H': [[], [8481, 32382]], - 'Hankaku': [[0, 255], []], - 'Hiragana': [[0, 255], []], - 'Hojo-EUC-H': [[], [], [9413025, 9436926], []], - 'Hojo-EUC-V': [[], [], [9413025, 9436926], []], - 'Hojo-H': [[], [8481, 32382]], - 'Hojo-V': [[], [8481, 32382]], - 'Katakana': [[0, 255], []], - 'NWP-H': [[], [8481, 32382]], - 'NWP-V': [[], [8481, 32382]], - 'RKSJ-H': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]], - 'RKSJ-V': [[0, 128, 160, 223], [33088, 40956, 57408, 64764]], - 'Roman': [[0, 255], []], - 'UniHojo-UCS2-H': [[], [0, 55295, 57344, 65535]], - 'UniHojo-UCS2-V': [[], [0, 55295, 57344, 65535]], - 'UniHojo-UTF16-H': [[], [0, 55295, 57344, 65535], [], - [3623934976, 3690979327]], - 'UniHojo-UTF16-V': [[], [0, 55295, 57344, 65535], [], - [3623934976, 3690979327]], - 'UniJIS-UCS2-H': [[], [0, 55295, 57344, 65535]], - 'UniJIS-UCS2-HW-H': [[], [0, 55295, 57344, 65535]], - 'UniJIS-UCS2-HW-V': [[], [0, 55295, 57344, 65535]], - 'UniJIS-UCS2-V': [[], [0, 55295, 57344, 65535]], - 'UniJIS-UTF16-H': [[], [0, 55295, 57344, 65535], [], - [3623934976, 3690979327]], - 'UniJIS-UTF16-V': [[], [0, 55295, 57344, 65535], [], - [3623934976, 3690979327]], - 'UniJISPro-UCS2-HW-V': [[], [0, 55295, 57344, 65535]], - 'UniJISPro-UCS2-V': [[], [0, 55295, 57344, 65535]], - 'V': [[], [8481, 32382]], - 'WP-Symbol': [[0, 255], []], - 'Adobe-Korea1-0': [[], [0, 9471]], - 'Adobe-Korea1-1': [[], [0, 18175]], - 'Adobe-Korea1-2': [[], [0, 18431]], - 'Adobe-Korea1-UCS2': [[], [0, 65535]], - 'KSC-EUC-H': [[0, 128], [41377, 65278]], - 'KSC-EUC-V': [[0, 128], [41377, 65278]], - 'KSC-H': [[], [8481, 32382]], - 'KSC-Johab-H': [[0, 128], [33857, 54270, 55345, 57086, 57393, 63998]], - 'KSC-Johab-V': [[0, 128], [33857, 54270, 55345, 57086, 57393, 63998]], - 'KSC-V': [[], [8481, 32382]], - 'KSCms-UHC-H': [[0, 128], [33089, 65278]], - 'KSCms-UHC-HW-H': [[0, 128], [33089, 65278]], - 'KSCms-UHC-HW-V': [[0, 128], [33089, 65278]], - 'KSCms-UHC-V': [[0, 128], [33089, 65278]], - 'KSCpc-EUC-H': [[0, 132, 254, 255], [41281, 65022]], - 'KSCpc-EUC-V': [[0, 132, 254, 255], [41281, 65022]], - 'UniKS-UCS2-H': [[], [0, 55295, 57344, 65535]], - 'UniKS-UCS2-V': [[], [0, 55295, 57344, 65535]], - 'UniKS-UTF16-H': [[], [0, 55295, 57344, 65535], [], [3623934976, 3690979327]], - 'UniKS-UTF16-V': [[], [0, 55295, 57344, 65535], [], [3623934976, 3690979327]] -}; - -// CMap, not to be confused with TrueType's cmap. -var CMap = (function CMapClosure() { - function CMap() { - // Codespace ranges are stored as follows: - // [[1BytePairs], [2BytePairs], [3BytePairs], [4BytePairs]] - // where nBytePairs are ranges e.g. [low1, high1, low2, high2, ...] - this.codespaceRanges = [[], [], [], []]; - this.map = []; - this.vertical = false; - } - CMap.prototype = { - addCodespaceRange: function(n, low, high) { - this.codespaceRanges[n - 1].push(low, high); - }, - - mapRange: function(low, high, dstLow) { - var lastByte = dstLow.length - 1; - while (low <= high) { - this.map[low] = dstLow; - // Only the last byte has to be incremented. - dstLow = dstLow.substr(0, lastByte) + - String.fromCharCode(dstLow.charCodeAt(lastByte) + 1); - ++low; - } - }, - - mapRangeToArray: function(low, high, array) { - var i = 0; - while (low <= high) { - this.map[low] = array[i++]; - ++low; - } - }, - - mapOne: function(src, dst) { - this.map[src] = dst; - }, - - lookup: function(code) { - return this.map[code]; - }, - - readCharCode: function(str, offset) { - var c = 0; - var codespaceRanges = this.codespaceRanges; - var codespaceRangesLen = this.codespaceRanges.length; - // 9.7.6.2 CMap Mapping - // The code length is at most 4. - for (var n = 0; n < codespaceRangesLen; n++) { - c = ((c << 8) | str.charCodeAt(offset + n)) >>> 0; - // Check each codespace range to see if it falls within. - var codespaceRange = codespaceRanges[n]; - for (var k = 0, kk = codespaceRange.length; k < kk;) { - var low = codespaceRange[k++]; - var high = codespaceRange[k++]; - if (c >= low && c <= high) { - return [c, n + 1]; - } - } - } - - return [0, 1]; - } - - }; - return CMap; -})(); - -var IdentityCMap = (function IdentityCMapClosure() { - function IdentityCMap(vertical, n) { - CMap.call(this); - this.vertical = vertical; - this.addCodespaceRange(n, 0, 0xffff); - this.mapRange(0, 0xffff, '\u0000'); - } - Util.inherit(IdentityCMap, CMap, {}); - - return IdentityCMap; -})(); - -var CMapFactory = (function CMapFactoryClosure() { - function strToInt(str) { - var a = 0; - for (var i = 0; i < str.length; i++) { - a = (a << 8) | str.charCodeAt(i); - } - return a >>> 0; - } - - function expectString(obj) { - if (!isString(obj)) { - error('Malformed CMap: expected string.'); - } - } - - function expectInt(obj) { - if (!isInt(obj)) { - error('Malformed CMap: expected int.'); - } - } - - function parseBfChar(cMap, lexer) { - while (true) { - var obj = lexer.getObj(); - if (isEOF(obj)) { - break; - } - if (isCmd(obj, 'endbfchar')) { - return; - } - expectString(obj); - var src = strToInt(obj); - obj = lexer.getObj(); - // TODO are /dstName used? - expectString(obj); - var dst = obj; - cMap.mapOne(src, dst); - } - } - - function parseBfRange(cMap, lexer) { - while (true) { - var obj = lexer.getObj(); - if (isEOF(obj)) { - break; - } - if (isCmd(obj, 'endbfrange')) { - return; - } - expectString(obj); - var low = strToInt(obj); - obj = lexer.getObj(); - expectString(obj); - var high = strToInt(obj); - obj = lexer.getObj(); - if (isInt(obj) || isString(obj)) { - var dstLow = isInt(obj) ? String.fromCharCode(obj) : obj; - cMap.mapRange(low, high, dstLow); - } else if (isCmd(obj, '[')) { - obj = lexer.getObj(); - var array = []; - while (!isCmd(obj, ']') && !isEOF(obj)) { - array.push(obj); - obj = lexer.getObj(); - } - cMap.mapRangeToArray(low, high, array); - } else { - break; - } - } - error('Invalid bf range.'); - } - - function parseCidChar(cMap, lexer) { - while (true) { - var obj = lexer.getObj(); - if (isEOF(obj)) { - break; - } - if (isCmd(obj, 'endcidchar')) { - return; - } - expectString(obj); - var src = strToInt(obj); - obj = lexer.getObj(); - expectInt(obj); - var dst = String.fromCharCode(obj); - cMap.mapOne(src, dst); - } - } - - function parseCidRange(cMap, lexer) { - while (true) { - var obj = lexer.getObj(); - if (isEOF(obj)) { - break; - } - if (isCmd(obj, 'endcidrange')) { - return; - } - expectString(obj); - var low = strToInt(obj); - obj = lexer.getObj(); - expectString(obj); - var high = strToInt(obj); - obj = lexer.getObj(); - expectInt(obj); - var dstLow = String.fromCharCode(obj); - cMap.mapRange(low, high, dstLow); - } - } - - function parseCodespaceRange(cMap, lexer) { - while (true) { - var obj = lexer.getObj(); - if (isEOF(obj)) { - break; - } - if (isCmd(obj, 'endcodespacerange')) { - return; - } - if (!isString(obj)) { - break; - } - var low = strToInt(obj); - obj = lexer.getObj(); - if (!isString(obj)) { - break; - } - var high = strToInt(obj); - cMap.addCodespaceRange(obj.length, low, high); - } - error('Invalid codespace range.'); - } - - function parseCmap(cMap, lexer) { - objLoop: while (true) { - var obj = lexer.getObj(); - if (isEOF(obj)) { - break; - } else if (isCmd(obj)) { - switch (obj.cmd) { - case 'endcMap': - break objLoop; - case 'usecMap': - // TODO - break; - case 'begincodespacerange': - parseCodespaceRange(cMap, lexer); - break; - case 'beginbfchar': - parseBfChar(cMap, lexer); - break; - case 'begincidchar': - parseCidChar(cMap, lexer); - break; - case 'beginbfrange': - parseBfRange(cMap, lexer); - break; - case 'begincidrange': - parseCidRange(cMap, lexer); - break; - } - } - } - } - return { - create: function (encoding) { - if (isName(encoding)) { - switch (encoding.name) { - case 'Identity-H': - return new IdentityCMap(false, 2); - case 'Identity-V': - return new IdentityCMap(true, 2); - default: - if (encoding.name in CMAP_CODESPACES) { - // XXX: Temporary hack so the correct amount of bytes are read in - // CMap.readCharCode. - var cMap = new CMap(); - cMap.codespaceRanges = CMAP_CODESPACES[encoding.name]; - return cMap; - } - return null; - } - } else if (isStream(encoding)) { - var cMap = new CMap(); - var lexer = new Lexer(encoding); - try { - parseCmap(cMap, lexer); - } catch (e) { - warn('Invalid CMap data. ' + e); - } - return cMap; - } - error('Encoding required.'); - } - }; -})(); -/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- / +/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */ -/* - Copyright 2011 notmasteryet - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at +/* Copyright 2014 Opera Software ASA + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * + * Based on https://code.google.com/p/smhasher/wiki/MurmurHash3. + * Hashes roughly 100 KB per millisecond on i7 3.4 GHz. + */ +/* globals Uint32ArrayView */ - http://www.apache.org/licenses/LICENSE-2.0 +'use strict'; - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. -*/ +var MurmurHash3_64 = (function MurmurHash3_64Closure (seed) { + // Workaround for missing math precison in JS. + var MASK_HIGH = 0xffff0000; + var MASK_LOW = 0xffff; -// - The JPEG specification can be found in the ITU CCITT Recommendation T.81 -// (www.w3.org/Graphics/JPEG/itu-t81.pdf) -// - The JFIF specification can be found in the JPEG File Interchange Format -// (www.w3.org/Graphics/JPEG/jfif3.pdf) -// - The Adobe Application-Specific JPEG markers in the Supporting the DCT Filters -// in PostScript Level 2, Technical Note #5116 -// (partners.adobe.com/public/developer/en/ps/sdk/5116.DCT_Filter.pdf) - -var JpegImage = (function jpegImage() { - "use strict"; - var dctZigZag = new Int32Array([ - 0, - 1, 8, - 16, 9, 2, - 3, 10, 17, 24, - 32, 25, 18, 11, 4, - 5, 12, 19, 26, 33, 40, - 48, 41, 34, 27, 20, 13, 6, - 7, 14, 21, 28, 35, 42, 49, 56, - 57, 50, 43, 36, 29, 22, 15, - 23, 30, 37, 44, 51, 58, - 59, 52, 45, 38, 31, - 39, 46, 53, 60, - 61, 54, 47, - 55, 62, - 63 - ]); - - var dctCos1 = 4017 // cos(pi/16) - var dctSin1 = 799 // sin(pi/16) - var dctCos3 = 3406 // cos(3*pi/16) - var dctSin3 = 2276 // sin(3*pi/16) - var dctCos6 = 1567 // cos(6*pi/16) - var dctSin6 = 3784 // sin(6*pi/16) - var dctSqrt2 = 5793 // sqrt(2) - var dctSqrt1d2 = 2896 // sqrt(2) / 2 - - function constructor() { + function MurmurHash3_64 (seed) { + var SEED = 0xc3d2e1f0; + this.h1 = seed ? seed & 0xffffffff : SEED; + this.h2 = seed ? seed & 0xffffffff : SEED; } - function buildHuffmanTable(codeLengths, values) { - var k = 0, code = [], i, j, length = 16; - while (length > 0 && !codeLengths[length - 1]) - length--; - code.push({children: [], index: 0}); - var p = code[0], q; - for (i = 0; i < length; i++) { - for (j = 0; j < codeLengths[i]; j++) { - p = code.pop(); - p.children[p.index] = values[k]; - while (p.index > 0) { - p = code.pop(); - } - p.index++; - code.push(p); - while (code.length <= i) { - code.push(q = {children: [], index: 0}); - p.children[p.index] = q.children; - p = q; - } - k++; - } - if (i + 1 < length) { - // p here points to last code - code.push(q = {children: [], index: 0}); - p.children[p.index] = q.children; - p = q; - } - } - return code[0].children; + var alwaysUseUint32ArrayView = false; +//#if !(FIREFOX || MOZCENTRAL || B2G || CHROME) + // old webkits have issues with non-aligned arrays + try { + new Uint32Array(new Uint8Array(5).buffer, 0, 1); + } catch (e) { + alwaysUseUint32ArrayView = true; } +//#endif - function decodeScan(data, offset, - frame, components, resetInterval, - spectralStart, spectralEnd, - successivePrev, successive) { - var precision = frame.precision; - var samplesPerLine = frame.samplesPerLine; - var scanLines = frame.scanLines; - var mcusPerLine = frame.mcusPerLine; - var progressive = frame.progressive; - var maxH = frame.maxH, maxV = frame.maxV; - - var startOffset = offset, bitsData = 0, bitsCount = 0; - function readBit() { - if (bitsCount > 0) { - bitsCount--; - return (bitsData >> bitsCount) & 1; - } - bitsData = data[offset++]; - if (bitsData == 0xFF) { - var nextByte = data[offset++]; - if (nextByte) { - throw "unexpected marker: " + ((bitsData << 8) | nextByte).toString(16); - } - // unstuff 0 - } - bitsCount = 7; - return bitsData >>> 7; - } - function decodeHuffman(tree) { - var node = tree, bit; - while ((bit = readBit()) !== null) { - node = node[bit]; - if (typeof node === 'number') - return node; - if (typeof node !== 'object') - throw "invalid huffman sequence"; - } - return null; - } - function receive(length) { - var n = 0; - while (length > 0) { - var bit = readBit(); - if (bit === null) return; - n = (n << 1) | bit; - length--; - } - return n; - } - function receiveAndExtend(length) { - var n = receive(length); - if (n >= 1 << (length - 1)) - return n; - return n + (-1 << length) + 1; - } - function decodeBaseline(component, zz) { - var t = decodeHuffman(component.huffmanTableDC); - var diff = t === 0 ? 0 : receiveAndExtend(t); - zz[0]= (component.pred += diff); - var k = 1; - while (k < 64) { - var rs = decodeHuffman(component.huffmanTableAC); - var s = rs & 15, r = rs >> 4; - if (s === 0) { - if (r < 15) - break; - k += 16; - continue; - } - k += r; - var z = dctZigZag[k]; - zz[z] = receiveAndExtend(s); - k++; - } - } - function decodeDCFirst(component, zz) { - var t = decodeHuffman(component.huffmanTableDC); - var diff = t === 0 ? 0 : (receiveAndExtend(t) << successive); - zz[0] = (component.pred += diff); - } - function decodeDCSuccessive(component, zz) { - zz[0] |= readBit() << successive; - } - var eobrun = 0; - function decodeACFirst(component, zz) { - if (eobrun > 0) { - eobrun--; - return; - } - var k = spectralStart, e = spectralEnd; - while (k <= e) { - var rs = decodeHuffman(component.huffmanTableAC); - var s = rs & 15, r = rs >> 4; - if (s === 0) { - if (r < 15) { - eobrun = receive(r) + (1 << r) - 1; - break; - } - k += 16; - continue; - } - k += r; - var z = dctZigZag[k]; - zz[z] = receiveAndExtend(s) * (1 << successive); - k++; - } - } - var successiveACState = 0, successiveACNextValue; - function decodeACSuccessive(component, zz) { - var k = spectralStart, e = spectralEnd, r = 0; - while (k <= e) { - var z = dctZigZag[k]; - switch (successiveACState) { - case 0: // initial state - var rs = decodeHuffman(component.huffmanTableAC); - var s = rs & 15, r = rs >> 4; - if (s === 0) { - if (r < 15) { - eobrun = receive(r) + (1 << r); - successiveACState = 4; - } else { - r = 16; - successiveACState = 1; - } - } else { - if (s !== 1) - throw "invalid ACn encoding"; - successiveACNextValue = receiveAndExtend(s); - successiveACState = r ? 2 : 3; - } - continue; - case 1: // skipping r zero items - case 2: - if (zz[z]) - zz[z] += (readBit() << successive); - else { - r--; - if (r === 0) - successiveACState = successiveACState == 2 ? 3 : 0; - } - break; - case 3: // set value for a zero item - if (zz[z]) - zz[z] += (readBit() << successive); - else { - zz[z] = successiveACNextValue << successive; - successiveACState = 0; - } - break; - case 4: // eob - if (zz[z]) - zz[z] += (readBit() << successive); - break; - } - k++; - } - if (successiveACState === 4) { - eobrun--; - if (eobrun === 0) - successiveACState = 0; - } - } - function decodeMcu(component, decode, mcu, row, col) { - var mcuRow = (mcu / mcusPerLine) | 0; - var mcuCol = mcu % mcusPerLine; - var blockRow = mcuRow * component.v + row; - var blockCol = mcuCol * component.h + col; - decode(component, component.blocks[blockRow][blockCol]); - } - function decodeBlock(component, decode, mcu) { - var blockRow = (mcu / component.blocksPerLine) | 0; - var blockCol = mcu % component.blocksPerLine; - decode(component, component.blocks[blockRow][blockCol]); - } - - var componentsLength = components.length; - var component, i, j, k, n; - var decodeFn; - if (progressive) { - if (spectralStart === 0) - decodeFn = successivePrev === 0 ? decodeDCFirst : decodeDCSuccessive; - else - decodeFn = successivePrev === 0 ? decodeACFirst : decodeACSuccessive; - } else { - decodeFn = decodeBaseline; - } - - var mcu = 0, marker; - var mcuExpected; - if (componentsLength == 1) { - mcuExpected = components[0].blocksPerLine * components[0].blocksPerColumn; - } else { - mcuExpected = mcusPerLine * frame.mcusPerColumn; - } - if (!resetInterval) resetInterval = mcuExpected; - - var h, v; - while (mcu < mcuExpected) { - // reset interval stuff - for (i = 0; i < componentsLength; i++) - components[i].pred = 0; - eobrun = 0; - - if (componentsLength == 1) { - component = components[0]; - for (n = 0; n < resetInterval; n++) { - decodeBlock(component, decodeFn, mcu); - mcu++; - } - } else { - for (n = 0; n < resetInterval; n++) { - for (i = 0; i < componentsLength; i++) { - component = components[i]; - h = component.h; - v = component.v; - for (j = 0; j < v; j++) { - for (k = 0; k < h; k++) { - decodeMcu(component, decodeFn, mcu, j, k); - } - } - } - mcu++; - } - } - - // find marker - bitsCount = 0; - marker = (data[offset] << 8) | data[offset + 1]; - if (marker <= 0xFF00) { - throw "marker was not found"; - } - - if (marker >= 0xFFD0 && marker <= 0xFFD7) { // RSTx - offset += 2; - } - else - break; - } - - return offset - startOffset; - } - - function buildComponentData(frame, component) { - var lines = []; - var blocksPerLine = component.blocksPerLine; - var blocksPerColumn = component.blocksPerColumn; - var samplesPerLine = blocksPerLine << 3; - var R = new Int32Array(64), r = new Uint8Array(64); - - // A port of poppler's IDCT method which in turn is taken from: - // Christoph Loeffler, Adriaan Ligtenberg, George S. Moschytz, - // "Practical Fast 1-D DCT Algorithms with 11 Multiplications", - // IEEE Intl. Conf. on Acoustics, Speech & Signal Processing, 1989, - // 988-991. - function quantizeAndInverse(zz, dataOut, dataIn) { - var qt = component.quantizationTable; - var v0, v1, v2, v3, v4, v5, v6, v7, t; - var p = dataIn; + MurmurHash3_64.prototype = { + update: function MurmurHash3_64_update(input) { + var useUint32ArrayView = alwaysUseUint32ArrayView; var i; - - // dequant - for (i = 0; i < 64; i++) - p[i] = zz[i] * qt[i]; - - // inverse DCT on rows - for (i = 0; i < 8; ++i) { - var row = 8 * i; - - // check for all-zero AC coefficients - if (p[1 + row] == 0 && p[2 + row] == 0 && p[3 + row] == 0 && - p[4 + row] == 0 && p[5 + row] == 0 && p[6 + row] == 0 && - p[7 + row] == 0) { - t = (dctSqrt2 * p[0 + row] + 512) >> 10; - p[0 + row] = t; - p[1 + row] = t; - p[2 + row] = t; - p[3 + row] = t; - p[4 + row] = t; - p[5 + row] = t; - p[6 + row] = t; - p[7 + row] = t; - continue; - } - - // stage 4 - v0 = (dctSqrt2 * p[0 + row] + 128) >> 8; - v1 = (dctSqrt2 * p[4 + row] + 128) >> 8; - v2 = p[2 + row]; - v3 = p[6 + row]; - v4 = (dctSqrt1d2 * (p[1 + row] - p[7 + row]) + 128) >> 8; - v7 = (dctSqrt1d2 * (p[1 + row] + p[7 + row]) + 128) >> 8; - v5 = p[3 + row] << 4; - v6 = p[5 + row] << 4; - - // stage 3 - t = (v0 - v1+ 1) >> 1; - v0 = (v0 + v1 + 1) >> 1; - v1 = t; - t = (v2 * dctSin6 + v3 * dctCos6 + 128) >> 8; - v2 = (v2 * dctCos6 - v3 * dctSin6 + 128) >> 8; - v3 = t; - t = (v4 - v6 + 1) >> 1; - v4 = (v4 + v6 + 1) >> 1; - v6 = t; - t = (v7 + v5 + 1) >> 1; - v5 = (v7 - v5 + 1) >> 1; - v7 = t; - - // stage 2 - t = (v0 - v3 + 1) >> 1; - v0 = (v0 + v3 + 1) >> 1; - v3 = t; - t = (v1 - v2 + 1) >> 1; - v1 = (v1 + v2 + 1) >> 1; - v2 = t; - t = (v4 * dctSin3 + v7 * dctCos3 + 2048) >> 12; - v4 = (v4 * dctCos3 - v7 * dctSin3 + 2048) >> 12; - v7 = t; - t = (v5 * dctSin1 + v6 * dctCos1 + 2048) >> 12; - v5 = (v5 * dctCos1 - v6 * dctSin1 + 2048) >> 12; - v6 = t; - - // stage 1 - p[0 + row] = v0 + v7; - p[7 + row] = v0 - v7; - p[1 + row] = v1 + v6; - p[6 + row] = v1 - v6; - p[2 + row] = v2 + v5; - p[5 + row] = v2 - v5; - p[3 + row] = v3 + v4; - p[4 + row] = v3 - v4; - } - - // inverse DCT on columns - for (i = 0; i < 8; ++i) { - var col = i; - - // check for all-zero AC coefficients - if (p[1*8 + col] == 0 && p[2*8 + col] == 0 && p[3*8 + col] == 0 && - p[4*8 + col] == 0 && p[5*8 + col] == 0 && p[6*8 + col] == 0 && - p[7*8 + col] == 0) { - t = (dctSqrt2 * dataIn[i+0] + 8192) >> 14; - p[0*8 + col] = t; - p[1*8 + col] = t; - p[2*8 + col] = t; - p[3*8 + col] = t; - p[4*8 + col] = t; - p[5*8 + col] = t; - p[6*8 + col] = t; - p[7*8 + col] = t; - continue; - } - - // stage 4 - v0 = (dctSqrt2 * p[0*8 + col] + 2048) >> 12; - v1 = (dctSqrt2 * p[4*8 + col] + 2048) >> 12; - v2 = p[2*8 + col]; - v3 = p[6*8 + col]; - v4 = (dctSqrt1d2 * (p[1*8 + col] - p[7*8 + col]) + 2048) >> 12; - v7 = (dctSqrt1d2 * (p[1*8 + col] + p[7*8 + col]) + 2048) >> 12; - v5 = p[3*8 + col]; - v6 = p[5*8 + col]; - - // stage 3 - t = (v0 - v1 + 1) >> 1; - v0 = (v0 + v1 + 1) >> 1; - v1 = t; - t = (v2 * dctSin6 + v3 * dctCos6 + 2048) >> 12; - v2 = (v2 * dctCos6 - v3 * dctSin6 + 2048) >> 12; - v3 = t; - t = (v4 - v6 + 1) >> 1; - v4 = (v4 + v6 + 1) >> 1; - v6 = t; - t = (v7 + v5 + 1) >> 1; - v5 = (v7 - v5 + 1) >> 1; - v7 = t; - - // stage 2 - t = (v0 - v3 + 1) >> 1; - v0 = (v0 + v3 + 1) >> 1; - v3 = t; - t = (v1 - v2 + 1) >> 1; - v1 = (v1 + v2 + 1) >> 1; - v2 = t; - t = (v4 * dctSin3 + v7 * dctCos3 + 2048) >> 12; - v4 = (v4 * dctCos3 - v7 * dctSin3 + 2048) >> 12; - v7 = t; - t = (v5 * dctSin1 + v6 * dctCos1 + 2048) >> 12; - v5 = (v5 * dctCos1 - v6 * dctSin1 + 2048) >> 12; - v6 = t; - - // stage 1 - p[0*8 + col] = v0 + v7; - p[7*8 + col] = v0 - v7; - p[1*8 + col] = v1 + v6; - p[6*8 + col] = v1 - v6; - p[2*8 + col] = v2 + v5; - p[5*8 + col] = v2 - v5; - p[3*8 + col] = v3 + v4; - p[4*8 + col] = v3 - v4; - } - - // convert to 8-bit integers - for (i = 0; i < 64; ++i) { - var sample = 128 + ((p[i] + 8) >> 4); - dataOut[i] = sample < 0 ? 0 : sample > 0xFF ? 0xFF : sample; - } - } - - var i, j; - for (var blockRow = 0; blockRow < blocksPerColumn; blockRow++) { - var scanLine = blockRow << 3; - for (i = 0; i < 8; i++) - lines.push(new Uint8Array(samplesPerLine)); - for (var blockCol = 0; blockCol < blocksPerLine; blockCol++) { - quantizeAndInverse(component.blocks[blockRow][blockCol], r, R); - - var offset = 0, sample = blockCol << 3; - for (j = 0; j < 8; j++) { - var line = lines[scanLine + j]; - for (i = 0; i < 8; i++) - line[sample + i] = r[offset++]; - } - } - } - return lines; - } - - function clampTo8bit(a) { - return a < 0 ? 0 : a > 255 ? 255 : a; - } - - constructor.prototype = { - load: function load(path) { - var xhr = new XMLHttpRequest(); - xhr.open("GET", path, true); - xhr.responseType = "arraybuffer"; - xhr.onload = (function() { - // TODO catch parse error - var data = new Uint8Array(xhr.response || xhr.mozResponseArrayBuffer); - this.parse(data); - if (this.onload) - this.onload(); - }).bind(this); - xhr.send(null); - }, - parse: function parse(data) { - var offset = 0, length = data.length; - function readUint16() { - var value = (data[offset] << 8) | data[offset + 1]; - offset += 2; - return value; - } - function readDataBlock() { - var length = readUint16(); - var array = data.subarray(offset, offset + length - 2); - offset += array.length; - return array; - } - function prepareComponents(frame) { - var maxH = 0, maxV = 0; - var component, componentId; - for (componentId in frame.components) { - if (frame.components.hasOwnProperty(componentId)) { - component = frame.components[componentId]; - if (maxH < component.h) maxH = component.h; - if (maxV < component.v) maxV = component.v; + if (typeof input === 'string') { + var data = new Uint8Array(input.length * 2); + var length = 0; + for (i = 0; i < input.length; i++) { + var code = input.charCodeAt(i); + if (code <= 0xff) { + data[length++] = code; + } + else { + data[length++] = code >>> 8; + data[length++] = code & 0xff; } } - var mcusPerLine = Math.ceil(frame.samplesPerLine / 8 / maxH); - var mcusPerColumn = Math.ceil(frame.scanLines / 8 / maxV); - for (componentId in frame.components) { - if (frame.components.hasOwnProperty(componentId)) { - component = frame.components[componentId]; - var blocksPerLine = Math.ceil(Math.ceil(frame.samplesPerLine / 8) * component.h / maxH); - var blocksPerColumn = Math.ceil(Math.ceil(frame.scanLines / 8) * component.v / maxV); - var blocksPerLineForMcu = mcusPerLine * component.h; - var blocksPerColumnForMcu = mcusPerColumn * component.v; - var blocks = []; - for (var i = 0; i < blocksPerColumnForMcu; i++) { - var row = []; - for (var j = 0; j < blocksPerLineForMcu; j++) - row.push(new Int32Array(64)); - blocks.push(row); - } - component.blocksPerLine = blocksPerLine; - component.blocksPerColumn = blocksPerColumn; - component.blocks = blocks; - } + } else if (input instanceof Uint8Array) { + data = input; + length = data.length; + } else if (typeof input === 'object' && ('length' in input)) { + // processing regular arrays as well, e.g. for IE9 + data = input; + length = data.length; + useUint32ArrayView = true; + } else { + throw new Error('Wrong data format in MurmurHash3_64_update. ' + + 'Input must be a string or array.'); + } + + var blockCounts = length >> 2; + var tailLength = length - blockCounts * 4; + // we don't care about endianness here + var dataUint32 = useUint32ArrayView ? + new Uint32ArrayView(data, blockCounts) : + new Uint32Array(data.buffer, 0, blockCounts); + var k1 = 0; + var k2 = 0; + var h1 = this.h1; + var h2 = this.h2; + var C1 = 0xcc9e2d51; + var C2 = 0x1b873593; + var C1_LOW = C1 & MASK_LOW; + var C2_LOW = C2 & MASK_LOW; + + for (i = 0; i < blockCounts; i++) { + if (i & 1) { + k1 = dataUint32[i]; + k1 = (k1 * C1 & MASK_HIGH) | (k1 * C1_LOW & MASK_LOW); + k1 = k1 << 15 | k1 >>> 17; + k1 = (k1 * C2 & MASK_HIGH) | (k1 * C2_LOW & MASK_LOW); + h1 ^= k1; + h1 = h1 << 13 | h1 >>> 19; + h1 = h1 * 5 + 0xe6546b64; + } else { + k2 = dataUint32[i]; + k2 = (k2 * C1 & MASK_HIGH) | (k2 * C1_LOW & MASK_LOW); + k2 = k2 << 15 | k2 >>> 17; + k2 = (k2 * C2 & MASK_HIGH) | (k2 * C2_LOW & MASK_LOW); + h2 ^= k2; + h2 = h2 << 13 | h2 >>> 19; + h2 = h2 * 5 + 0xe6546b64; } - frame.maxH = maxH; - frame.maxV = maxV; - frame.mcusPerLine = mcusPerLine; - frame.mcusPerColumn = mcusPerColumn; - } - var jfif = null; - var adobe = null; - var pixels = null; - var frame, resetInterval; - var quantizationTables = [], frames = []; - var huffmanTablesAC = [], huffmanTablesDC = []; - var fileMarker = readUint16(); - if (fileMarker != 0xFFD8) { // SOI (Start of Image) - throw "SOI not found"; } - fileMarker = readUint16(); - while (fileMarker != 0xFFD9) { // EOI (End of image) - var i, j, l; - switch(fileMarker) { - case 0xFFE0: // APP0 (Application Specific) - case 0xFFE1: // APP1 - case 0xFFE2: // APP2 - case 0xFFE3: // APP3 - case 0xFFE4: // APP4 - case 0xFFE5: // APP5 - case 0xFFE6: // APP6 - case 0xFFE7: // APP7 - case 0xFFE8: // APP8 - case 0xFFE9: // APP9 - case 0xFFEA: // APP10 - case 0xFFEB: // APP11 - case 0xFFEC: // APP12 - case 0xFFED: // APP13 - case 0xFFEE: // APP14 - case 0xFFEF: // APP15 - case 0xFFFE: // COM (Comment) - var appData = readDataBlock(); + k1 = 0; - if (fileMarker === 0xFFE0) { - if (appData[0] === 0x4A && appData[1] === 0x46 && appData[2] === 0x49 && - appData[3] === 0x46 && appData[4] === 0) { // 'JFIF\x00' - jfif = { - version: { major: appData[5], minor: appData[6] }, - densityUnits: appData[7], - xDensity: (appData[8] << 8) | appData[9], - yDensity: (appData[10] << 8) | appData[11], - thumbWidth: appData[12], - thumbHeight: appData[13], - thumbData: appData.subarray(14, 14 + 3 * appData[12] * appData[13]) - }; - } - } - // TODO APP1 - Exif - if (fileMarker === 0xFFEE) { - if (appData[0] === 0x41 && appData[1] === 0x64 && appData[2] === 0x6F && - appData[3] === 0x62 && appData[4] === 0x65 && appData[5] === 0) { // 'Adobe\x00' - adobe = { - version: appData[6], - flags0: (appData[7] << 8) | appData[8], - flags1: (appData[9] << 8) | appData[10], - transformCode: appData[11] - }; - } - } - break; - - case 0xFFDB: // DQT (Define Quantization Tables) - var quantizationTablesLength = readUint16(); - var quantizationTablesEnd = quantizationTablesLength + offset - 2; - while (offset < quantizationTablesEnd) { - var quantizationTableSpec = data[offset++]; - var tableData = new Int32Array(64); - if ((quantizationTableSpec >> 4) === 0) { // 8 bit values - for (j = 0; j < 64; j++) { - var z = dctZigZag[j]; - tableData[z] = data[offset++]; - } - } else if ((quantizationTableSpec >> 4) === 1) { //16 bit - for (j = 0; j < 64; j++) { - var z = dctZigZag[j]; - tableData[z] = readUint16(); - } - } else - throw "DQT: invalid table spec"; - quantizationTables[quantizationTableSpec & 15] = tableData; - } - break; - - case 0xFFC0: // SOF0 (Start of Frame, Baseline DCT) - case 0xFFC1: // SOF1 (Start of Frame, Extended DCT) - case 0xFFC2: // SOF2 (Start of Frame, Progressive DCT) - readUint16(); // skip data length - frame = {}; - frame.extended = (fileMarker === 0xFFC1); - frame.progressive = (fileMarker === 0xFFC2); - frame.precision = data[offset++]; - frame.scanLines = readUint16(); - frame.samplesPerLine = readUint16(); - frame.components = {}; - frame.componentsOrder = []; - var componentsCount = data[offset++], componentId; - var maxH = 0, maxV = 0; - for (i = 0; i < componentsCount; i++) { - componentId = data[offset]; - var h = data[offset + 1] >> 4; - var v = data[offset + 1] & 15; - var qId = data[offset + 2]; - frame.componentsOrder.push(componentId); - frame.components[componentId] = { - h: h, - v: v, - quantizationTable: quantizationTables[qId] - }; - offset += 3; - } - prepareComponents(frame); - frames.push(frame); - break; - - case 0xFFC4: // DHT (Define Huffman Tables) - var huffmanLength = readUint16(); - for (i = 2; i < huffmanLength;) { - var huffmanTableSpec = data[offset++]; - var codeLengths = new Uint8Array(16); - var codeLengthSum = 0; - for (j = 0; j < 16; j++, offset++) - codeLengthSum += (codeLengths[j] = data[offset]); - var huffmanValues = new Uint8Array(codeLengthSum); - for (j = 0; j < codeLengthSum; j++, offset++) - huffmanValues[j] = data[offset]; - i += 17 + codeLengthSum; - - ((huffmanTableSpec >> 4) === 0 ? - huffmanTablesDC : huffmanTablesAC)[huffmanTableSpec & 15] = - buildHuffmanTable(codeLengths, huffmanValues); - } - break; - - case 0xFFDD: // DRI (Define Restart Interval) - readUint16(); // skip data length - resetInterval = readUint16(); - break; - - case 0xFFDA: // SOS (Start of Scan) - var scanLength = readUint16(); - var selectorsCount = data[offset++]; - var components = [], component; - for (i = 0; i < selectorsCount; i++) { - component = frame.components[data[offset++]]; - var tableSpec = data[offset++]; - component.huffmanTableDC = huffmanTablesDC[tableSpec >> 4]; - component.huffmanTableAC = huffmanTablesAC[tableSpec & 15]; - components.push(component); - } - var spectralStart = data[offset++]; - var spectralEnd = data[offset++]; - var successiveApproximation = data[offset++]; - var processed = decodeScan(data, offset, - frame, components, resetInterval, - spectralStart, spectralEnd, - successiveApproximation >> 4, successiveApproximation & 15); - offset += processed; - break; - default: - if (data[offset - 3] == 0xFF && - data[offset - 2] >= 0xC0 && data[offset - 2] <= 0xFE) { - // could be incorrect encoding -- last 0xFF byte of the previous - // block was eaten by the encoder - offset -= 3; - break; - } - throw "unknown JPEG marker " + fileMarker.toString(16); - } - fileMarker = readUint16(); - } - if (frames.length != 1) - throw "only single frame JPEGs supported"; - - this.width = frame.samplesPerLine; - this.height = frame.scanLines; - this.jfif = jfif; - this.adobe = adobe; - this.components = []; - for (var i = 0; i < frame.componentsOrder.length; i++) { - var component = frame.components[frame.componentsOrder[i]]; - this.components.push({ - lines: buildComponentData(frame, component), - scaleX: component.h / frame.maxH, - scaleY: component.v / frame.maxV - }); - } - }, - getData: function getData(width, height) { - var scaleX = this.width / width, scaleY = this.height / height; - - var component1, component2, component3, component4; - var component1Line, component2Line, component3Line, component4Line; - var x, y; - var offset = 0; - var Y, Cb, Cr, K, C, M, Ye, R, G, B; - var colorTransform; - var dataLength = width * height * this.components.length; - var data = new Uint8Array(dataLength); - switch (this.components.length) { - case 1: - component1 = this.components[0]; - for (y = 0; y < height; y++) { - component1Line = component1.lines[0 | (y * component1.scaleY * scaleY)]; - for (x = 0; x < width; x++) { - Y = component1Line[0 | (x * component1.scaleX * scaleX)]; - - data[offset++] = Y; - } - } - break; + switch (tailLength) { + case 3: + k1 ^= data[blockCounts * 4 + 2] << 16; + /* falls through */ case 2: - // PDF might compress two component data in custom colorspace - component1 = this.components[0]; - component2 = this.components[1]; - for (y = 0; y < height; y++) { - component1Line = component1.lines[0 | (y * component1.scaleY * scaleY)]; - component2Line = component2.lines[0 | (y * component2.scaleY * scaleY)]; - for (x = 0; x < width; x++) { - Y = component1Line[0 | (x * component1.scaleX * scaleX)]; - data[offset++] = Y; - Y = component2Line[0 | (x * component2.scaleX * scaleX)]; - data[offset++] = Y; - } - } - break; - case 3: - // The default transform for three components is true - colorTransform = true; - // The adobe transform marker overrides any previous setting - if (this.adobe && this.adobe.transformCode) - colorTransform = true; - else if (typeof this.colorTransform !== 'undefined') - colorTransform = !!this.colorTransform; - - component1 = this.components[0]; - component2 = this.components[1]; - component3 = this.components[2]; - for (y = 0; y < height; y++) { - component1Line = component1.lines[0 | (y * component1.scaleY * scaleY)]; - component2Line = component2.lines[0 | (y * component2.scaleY * scaleY)]; - component3Line = component3.lines[0 | (y * component3.scaleY * scaleY)]; - for (x = 0; x < width; x++) { - if (!colorTransform) { - R = component1Line[0 | (x * component1.scaleX * scaleX)]; - G = component2Line[0 | (x * component2.scaleX * scaleX)]; - B = component3Line[0 | (x * component3.scaleX * scaleX)]; - } else { - Y = component1Line[0 | (x * component1.scaleX * scaleX)]; - Cb = component2Line[0 | (x * component2.scaleX * scaleX)]; - Cr = component3Line[0 | (x * component3.scaleX * scaleX)]; - - R = clampTo8bit(Y + 1.402 * (Cr - 128)); - G = clampTo8bit(Y - 0.3441363 * (Cb - 128) - 0.71413636 * (Cr - 128)); - B = clampTo8bit(Y + 1.772 * (Cb - 128)); - } - - data[offset++] = R; - data[offset++] = G; - data[offset++] = B; - } - } - break; - case 4: - // The default transform for four components is false - colorTransform = false; - // The adobe transform marker overrides any previous setting - if (this.adobe && this.adobe.transformCode) - colorTransform = true; - else if (typeof this.colorTransform !== 'undefined') - colorTransform = !!this.colorTransform; - - component1 = this.components[0]; - component2 = this.components[1]; - component3 = this.components[2]; - component4 = this.components[3]; - for (y = 0; y < height; y++) { - component1Line = component1.lines[0 | (y * component1.scaleY * scaleY)]; - component2Line = component2.lines[0 | (y * component2.scaleY * scaleY)]; - component3Line = component3.lines[0 | (y * component3.scaleY * scaleY)]; - component4Line = component4.lines[0 | (y * component4.scaleY * scaleY)]; - for (x = 0; x < width; x++) { - if (!colorTransform) { - C = component1Line[0 | (x * component1.scaleX * scaleX)]; - M = component2Line[0 | (x * component2.scaleX * scaleX)]; - Ye = component3Line[0 | (x * component3.scaleX * scaleX)]; - K = component4Line[0 | (x * component4.scaleX * scaleX)]; - } else { - Y = component1Line[0 | (x * component1.scaleX * scaleX)]; - Cb = component2Line[0 | (x * component2.scaleX * scaleX)]; - Cr = component3Line[0 | (x * component3.scaleX * scaleX)]; - K = component4Line[0 | (x * component4.scaleX * scaleX)]; - - C = 255 - clampTo8bit(Y + 1.402 * (Cr - 128)); - M = 255 - clampTo8bit(Y - 0.3441363 * (Cb - 128) - 0.71413636 * (Cr - 128)); - Ye = 255 - clampTo8bit(Y + 1.772 * (Cb - 128)); - } - data[offset++] = C; - data[offset++] = M; - data[offset++] = Ye; - data[offset++] = K; - } - } - break; - default: - throw 'Unsupported color mode'; - } - return data; - }, - copyToImageData: function copyToImageData(imageData) { - var width = imageData.width, height = imageData.height; - var imageDataArray = imageData.data; - var data = this.getData(width, height); - var i = 0, j = 0, x, y; - var Y, K, C, M, R, G, B; - switch (this.components.length) { + k1 ^= data[blockCounts * 4 + 1] << 8; + /* falls through */ case 1: - for (y = 0; y < height; y++) { - for (x = 0; x < width; x++) { - Y = data[i++]; - - imageDataArray[j++] = Y; - imageDataArray[j++] = Y; - imageDataArray[j++] = Y; - imageDataArray[j++] = 255; - } - } - break; - case 3: - for (y = 0; y < height; y++) { - for (x = 0; x < width; x++) { - R = data[i++]; - G = data[i++]; - B = data[i++]; - - imageDataArray[j++] = R; - imageDataArray[j++] = G; - imageDataArray[j++] = B; - imageDataArray[j++] = 255; - } - } - break; - case 4: - for (y = 0; y < height; y++) { - for (x = 0; x < width; x++) { - C = data[i++]; - M = data[i++]; - Y = data[i++]; - K = data[i++]; - - R = 255 - clampTo8bit(C * (1 - K / 255) + K); - G = 255 - clampTo8bit(M * (1 - K / 255) + K); - B = 255 - clampTo8bit(Y * (1 - K / 255) + K); - - imageDataArray[j++] = R; - imageDataArray[j++] = G; - imageDataArray[j++] = B; - imageDataArray[j++] = 255; - } - } - break; - default: - throw 'Unsupported color mode'; + k1 ^= data[blockCounts * 4]; + /* falls through */ + k1 = (k1 * C1 & MASK_HIGH) | (k1 * C1_LOW & MASK_LOW); + k1 = k1 << 15 | k1 >>> 17; + k1 = (k1 * C2 & MASK_HIGH) | (k1 * C2_LOW & MASK_LOW); + if (blockCounts & 1) { + h1 ^= k1; + } else { + h2 ^= k1; + } } + + this.h1 = h1; + this.h2 = h2; + return this; + }, + + hexdigest: function MurmurHash3_64_hexdigest () { + var h1 = this.h1; + var h2 = this.h2; + + h1 ^= h2 >>> 1; + h1 = (h1 * 0xed558ccd & MASK_HIGH) | (h1 * 0x8ccd & MASK_LOW); + h2 = (h2 * 0xff51afd7 & MASK_HIGH) | + (((h2 << 16 | h1 >>> 16) * 0xafd7ed55 & MASK_HIGH) >>> 16); + h1 ^= h2 >>> 1; + h1 = (h1 * 0x1a85ec53 & MASK_HIGH) | (h1 * 0xec53 & MASK_LOW); + h2 = (h2 * 0xc4ceb9fe & MASK_HIGH) | + (((h2 << 16 | h1 >>> 16) * 0xb9fe1a85 & MASK_HIGH) >>> 16); + h1 ^= h2 >>> 1; + + for (var i = 0, arr = [h1, h2], str = ''; i < arr.length; i++) { + var hex = (arr[i] >>> 0).toString(16); + while (hex.length < 8) { + hex = '0' + hex; + } + str += hex; + } + + return str; } }; - return constructor; + return MurmurHash3_64; })();