diff --git a/services/web/Gruntfile.coffee b/services/web/Gruntfile.coffee index ba439c26dc..de6807ba38 100644 --- a/services/web/Gruntfile.coffee +++ b/services/web/Gruntfile.coffee @@ -101,8 +101,6 @@ module.exports = (grunt) -> exclude: ["libs"] }, { name: "libs" - },{ - name: "libs/pdf.worker" },{ name: "ace/mode-latex" } diff --git a/services/web/public/js/libs/pdf.worker.js b/services/web/public/js/libs/pdf.worker.js index 00ff310909..dfb2ea2634 100644 --- a/services/web/public/js/libs/pdf.worker.js +++ b/services/web/public/js/libs/pdf.worker.js @@ -14,16 +14,14 @@ * 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 = '1.0.937'; -PDFJS.build = '308646d'; +PDFJS.version = '0.8.894'; +PDFJS.build = 'ac91047'; (function pdfjsWrapper() { // Use strict in our context only - users might not want it @@ -52,7 +50,7 @@ PDFJS.build = '308646d'; 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]; @@ -69,45 +67,6 @@ 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 @@ -213,11 +172,7 @@ var OPS = PDFJS.OPS = { paintImageMaskXObjectGroup: 84, paintImageXObject: 85, paintInlineImageXObject: 86, - paintInlineImageXObjectGroup: 87, - paintImageXObjectRepeat: 88, - paintImageMaskXObjectRepeat: 89, - paintSolidColorImageMask: 90, - constructPath: 91 + paintInlineImageXObjectGroup: 87 }; // A notice for devs. These are good for things that are helpful to devs, such @@ -263,9 +218,8 @@ function backtrace() { } function assert(cond, msg) { - if (!cond) { + if (!cond) error(msg); - } } var UNSUPPORTED_FEATURES = PDFJS.UNSUPPORTED_FEATURES = { @@ -296,25 +250,18 @@ 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 (/^[a-z][a-z0-9+\-.]*:/i.test(url)) { + if (url.indexOf(':') >= 0) return url; - } - var i; - if (url.charAt(0) === '/') { + if (url.charAt(0) == '/') { // absolute path - i = baseUrl.indexOf('://'); - if (url.charAt(1) === '/') { - ++i; - } else { - i = baseUrl.indexOf('/', i + 3); - } + var i = baseUrl.indexOf('://'); + i = baseUrl.indexOf('/', i + 3); return baseUrl.substring(0, i) + url; } else { // relative path - var pathLength = baseUrl.length; + var pathLength = baseUrl.length, i; i = baseUrl.lastIndexOf('#'); pathLength = i >= 0 ? i : pathLength; i = baseUrl.lastIndexOf('?', pathLength); @@ -329,13 +276,11 @@ function isValidUrl(url, allowRelative) { if (!url) { return false; } - // 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) { + var colon = url.indexOf(':'); + if (colon < 0) { return allowRelative; } - protocol = protocol[0].toLowerCase(); + var protocol = url.substr(0, colon); switch (protocol) { case 'http': case 'https': @@ -348,6 +293,13 @@ 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, @@ -373,7 +325,6 @@ var PasswordException = (function PasswordExceptionClosure() { return PasswordException; })(); -PDFJS.PasswordException = PasswordException; var UnknownErrorException = (function UnknownErrorExceptionClosure() { function UnknownErrorException(msg, details) { @@ -387,7 +338,6 @@ var UnknownErrorException = (function UnknownErrorExceptionClosure() { return UnknownErrorException; })(); -PDFJS.UnknownErrorException = UnknownErrorException; var InvalidPDFException = (function InvalidPDFExceptionClosure() { function InvalidPDFException(msg) { @@ -400,7 +350,6 @@ var InvalidPDFException = (function InvalidPDFExceptionClosure() { return InvalidPDFException; })(); -PDFJS.InvalidPDFException = InvalidPDFException; var MissingPDFException = (function MissingPDFExceptionClosure() { function MissingPDFException(msg) { @@ -413,22 +362,6 @@ 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) { @@ -470,146 +403,33 @@ var XRefParseException = (function XRefParseExceptionClosure() { function bytesToString(bytes) { + var str = ''; var length = bytes.length; - 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(''); + for (var n = 0; n < length; ++n) + str += String.fromCharCode(bytes[n]); + return str; } function stringToBytes(str) { var length = str.length; var bytes = new Uint8Array(length); - for (var i = 0; i < length; ++i) { - bytes[i] = str.charCodeAt(i) & 0xFF; - } + for (var n = 0; n < length; ++n) + bytes[n] = str.charCodeAt(n) & 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() {} - var rgbBuf = ['rgb(', 0, ',', 0, ',', 0, ')']; - - // 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(''); + return 'rgb(' + rgb[0] + ',' + rgb[1] + ',' + rgb[2] + ')'; + }; + + Util.makeCssCmyk = function Util_makeCssCmyk(cmyk) { + var rgb = ColorSpace.singletons.cmyk.getRgb(cmyk, 0); + return Util.makeCssRgb(rgb); }; // Concatenates two transformation matrices together and returns the result. @@ -759,11 +579,12 @@ var Util = PDFJS.Util = (function UtilClosure() { return num < 0 ? -1 : 1; }; - Util.appendToArray = function Util_appendToArray(arr1, arr2) { + // TODO(mack): Rename appendToArray + Util.concatenateToArray = function concatenateToArray(arr1, arr2) { Array.prototype.push.apply(arr1, arr2); }; - Util.prependToArray = function Util_prependToArray(arr1, arr2) { + Util.prependToArray = function concatenateToArray(arr1, arr2) { Array.prototype.unshift.apply(arr1, arr2); }; @@ -810,22 +631,7 @@ 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; @@ -889,14 +695,7 @@ var PageViewport = PDFJS.PageViewport = (function PageViewportClosure() { this.height = height; this.fontScale = scale; } - 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. - */ + PageViewport.prototype = { clone: function PageViewPort_clone(args) { args = args || {}; var scale = 'scale' in args ? args.scale : this.scale; @@ -904,41 +703,15 @@ 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); } @@ -959,20 +732,19 @@ var PDFStringTranslateTable = [ ]; function stringToPDFString(str) { - var i, n = str.length, strBuf = []; + var i, n = str.length, str2 = ''; if (str[0] === '\xFE' && str[1] === '\xFF') { // UTF16BE BOM - for (i = 2; i < n; i += 2) { - strBuf.push(String.fromCharCode( - (str.charCodeAt(i) << 8) | str.charCodeAt(i + 1))); - } + for (i = 2; i < n; i += 2) + str2 += String.fromCharCode( + (str.charCodeAt(i) << 8) | str.charCodeAt(i + 1)); } else { for (i = 0; i < n; ++i) { var code = PDFStringTranslateTable[str.charCodeAt(i)]; - strBuf.push(code ? String.fromCharCode(code) : str.charAt(i)); + str2 += code ? String.fromCharCode(code) : str.charAt(i); } } - return strBuf.join(''); + return str2; } function stringToUTF8String(str) { @@ -987,19 +759,19 @@ 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) { @@ -1011,7 +783,7 @@ function isName(v) { } function isCmd(v, cmd) { - return v instanceof Cmd && (cmd === undefined || v.cmd === cmd); + return v instanceof Cmd && (!cmd || v.cmd == cmd); } function isDict(v, type) { @@ -1022,7 +794,7 @@ 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) { @@ -1030,47 +802,52 @@ function isArray(v) { } function isStream(v) { - return typeof v === 'object' && v !== null && v.getBytes !== undefined; + return typeof v == 'object' && v !== null && v !== undefined && + ('getBytes' in v); } function isArrayBuffer(v) { - return typeof v === 'object' && v !== null && v.byteLength !== undefined; + return typeof v == 'object' && v !== null && v !== undefined && + ('byteLength' in v); } function isRef(v) { return v instanceof Ref; } -/** - * Promise Capability object. - * - * @typedef {Object} PromiseCapability - * @property {Promise} promise - A promise object. - * @property {function} resolve - Fullfills the promise. - * @property {function} reject - Rejects the promise. - */ - -/** - * Creates a promise capability object. - * @alias PDFJS.createPromiseCapability - * - * @return {PromiseCapability} A capability object contains: - * - a Promise, resolve and reject methods. - */ -function createPromiseCapability() { - var capability = {}; - capability.promise = new Promise(function (resolve, reject) { - capability.resolve = resolve; - capability.reject = reject; - }); - return capability; +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'); } -PDFJS.createPromiseCapability = createPromiseCapability; +/** + * Legacy support for PDFJS Promise implementation. + * TODO remove eventually + */ +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; + }; +})(); /** * Polyfill for Promises: - * The following promise implementation tries to generally implement the + * The following promise implementation tries to generally implment 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. @@ -1105,20 +882,8 @@ PDFJS.createPromiseCapability = createPromiseCapability; }; } if (typeof globalScope.Promise.resolve !== 'function') { - 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); + globalScope.Promise.resolve = function (x) { + return new globalScope.Promise(function (resolve) { resolve(x); }); }; } return; @@ -1140,7 +905,7 @@ PDFJS.createPromiseCapability = createPromiseCapability; pendingRejectionCheck: false, scheduleHandlers: function scheduleHandlers(promise) { - if (promise._status === STATUS_PENDING) { + if (promise._status == STATUS_PENDING) { return; } @@ -1166,10 +931,10 @@ PDFJS.createPromiseCapability = createPromiseCapability; 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; @@ -1244,11 +1009,7 @@ PDFJS.createPromiseCapability = createPromiseCapability; function Promise(resolver) { this._status = STATUS_PENDING; this._handlers = []; - try { - resolver.call(this, this._resolve.bind(this), this._reject.bind(this)); - } catch (e) { - this._reject(e); - } + resolver.call(this, this._resolve.bind(this), this._reject.bind(this)); } /** * Builds a promise that is resolved when all the passed in promises are @@ -1284,9 +1045,8 @@ PDFJS.createPromiseCapability = createPromiseCapability; } results[i] = value; unresolved--; - if (unresolved === 0) { + if (unresolved === 0) resolveAll(results); - } }; })(i); if (Promise.isPromise(promise)) { @@ -1300,28 +1060,18 @@ PDFJS.createPromiseCapability = createPromiseCapability; /** * Checks if the value is likely a promise (has a 'then' function). - * @return {boolean} true if value is thenable + * @return {boolean} true if x is thenable */ Promise.isPromise = function Promise_isPromise(value) { return value && typeof value.then === 'function'; }; - /** * Creates resolved promise - * @param value resolve value + * @param x resolve value * @returns {Promise} */ - 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.resolve = function Promise_resolve(x) { + return new Promise(function (resolve) { resolve(x); }); }; Promise.prototype = { @@ -1336,7 +1086,7 @@ PDFJS.createPromiseCapability = createPromiseCapability; 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)); @@ -1364,7 +1114,7 @@ PDFJS.createPromiseCapability = createPromiseCapability; then: function Promise_then(onResolve, onReject) { var nextPromise = new Promise(function (resolve, reject) { - this.resolve = resolve; + this.resolve = reject; this.reject = reject; }); this._handlers.push({ @@ -1375,10 +1125,6 @@ PDFJS.createPromiseCapability = createPromiseCapability; }); HandlerManager.scheduleHandlers(this); return nextPromise; - }, - - catch: function Promise_catch(onReject) { - return this.then(undefined, onReject); } }; @@ -1390,9 +1136,8 @@ PDFJS.createPromiseCapability = createPromiseCapability; var StatTimer = (function StatTimerClosure() { function rpad(str, pad, length) { - while (str.length < length) { + while (str.length < length) str += pad; - } return str; } function StatTimer() { @@ -1402,21 +1147,17 @@ 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], @@ -1426,18 +1167,16 @@ 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 (i = 0, ii = times.length; i < ii; ++i) { + for (var 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 (i = 0, ii = times.length; i < ii; ++i) { + for (var 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'; @@ -1449,9 +1188,8 @@ 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); @@ -1489,7 +1227,7 @@ function MessageHandler(name, comObj) { this.comObj = comObj; this.callbackIndex = 1; this.postMessageTransfers = true; - var callbacksCapabilities = this.callbacksCapabilities = {}; + var callbacks = this.callbacks = {}; var ah = this.actionHandler = {}; ah['console_log'] = [function ahConsoleLog(data) { @@ -1506,40 +1244,35 @@ function MessageHandler(name, comObj) { var data = event.data; if (data.isReply) { var callbackId = data.callbackId; - 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); - } + if (data.callbackId in callbacks) { + var callback = callbacks[callbackId]; + delete callbacks[callbackId]; + callback(data.data); } else { error('Cannot resolve callback ' + callbackId); } } else if (data.action in ah) { var action = ah[data.action]; if (data.callbackId) { - Promise.resolve().then(function () { - return action[0].call(action[1], data.data); - }).then(function (result) { + var deferred = {}; + var promise = new Promise(function (resolve, reject) { + deferred.resolve = resolve; + deferred.reject = reject; + }); + deferred.promise = promise; + promise.then(function(resolvedData) { comObj.postMessage({ isReply: true, callbackId: data.callbackId, - data: result - }); - }, function (reason) { - comObj.postMessage({ - isReply: true, - callbackId: data.callbackId, - error: reason + data: resolvedData }); }); + action[0].call(action[1], data.data, deferred); } else { action[0].call(action[1], data.data); } } else { - error('Unknown action from worker: ' + data.action); + error('Unkown action from worker: ' + data.action); } }; } @@ -1556,47 +1289,19 @@ 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, transfers) { + send: function messageHandlerSend(actionName, data, callback, transfers) { var message = { action: actionName, data: data }; - 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); + if (callback) { + var callbackId = this.callbackIndex++; + this.callbacks[callbackId] = callback; + message.callbackId = callbackId; } - 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 { @@ -1610,14 +1315,2856 @@ 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) // @@ -1643,8 +4190,7 @@ var NetworkManager = (function NetworkManagerClosure() { function NetworkManager(url, args) { this.url = url; args = args || {}; - this.isHttp = /^https?:/i.test(url); - this.httpHeaders = (this.isHttp && args.httpHeaders) || {}; + this.httpHeaders = args.httpHeaders || {}; this.withCredentials = args.withCredentials || false; this.getXhr = args.getXhr || function NetworkManager_getXhr() { @@ -1661,16 +4207,17 @@ var NetworkManager = (function NetworkManagerClosure() { } function getArrayBuffer(xhr) { - var data = xhr.response; + var data = (xhr.mozResponseArrayBuffer || xhr.mozResponse || + xhr.responseArrayBuffer || xhr.response); if (typeof data !== 'string') { return data; } var length = data.length; - var array = new Uint8Array(length); + var buffer = new Uint8Array(length); for (var i = 0; i < length; i++) { - array[i] = data.charCodeAt(i) & 0xFF; + buffer[i] = data.charCodeAt(i) & 0xFF; } - return array.buffer; + return buffer; } NetworkManager.prototype = { @@ -1685,11 +4232,11 @@ var NetworkManager = (function NetworkManagerClosure() { return this.request(args); }, - requestFull: function NetworkManager_requestFull(listeners) { + requestFull: function NetworkManager_requestRange(listeners) { return this.request(listeners); }, - request: function NetworkManager_request(args) { + request: function NetworkManager_requestRange(args) { var xhr = this.getXhr(); var xhrId = this.currXhrId++; var pendingRequest = this.pendingRequests[xhrId] = { @@ -1705,7 +4252,7 @@ var NetworkManager = (function NetworkManagerClosure() { } xhr.setRequestHeader(property, value); } - if (this.isHttp && 'begin' in args && 'end' in args) { + if ('begin' in args && 'end' in args) { var rangeStr = args.begin + '-' + (args.end - 1); xhr.setRequestHeader('Range', 'bytes=' + rangeStr); pendingRequest.expectedStatus = 206; @@ -1713,54 +4260,27 @@ var NetworkManager = (function NetworkManagerClosure() { pendingRequest.expectedStatus = 200; } - 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'; - } + xhr.mozResponseType = xhr.responseType = 'arraybuffer'; + if (args.onProgress) { + xhr.onprogress = args.onProgress; + } 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) { @@ -1787,7 +4307,7 @@ var NetworkManager = (function NetworkManagerClosure() { delete this.pendingRequests[xhrId]; // success status == 0 can be on ftp, file and other protocols - if (xhr.status === 0 && this.isHttp) { + if (xhr.status === 0 && /^https?:/i.test(this.url)) { if (pendingRequest.onError) { pendingRequest.onError(xhr.status); } @@ -1821,8 +4341,6 @@ var NetworkManager = (function NetworkManagerClosure() { begin: begin, chunk: chunk }); - } else if (pendingRequest.onProgressiveData) { - pendingRequest.onDone(null); } else { pendingRequest.onDone({ begin: 0, @@ -1842,10 +4360,6 @@ 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; }, @@ -1883,8 +4397,7 @@ var ChunkedStream = (function ChunkedStreamClosure() { this.numChunksLoaded = 0; this.numChunks = Math.ceil(length / chunkSize); this.manager = manager; - this.progressiveDataLength = 0; - this.lastSuccessfulEnsureByteChunk = -1; // a single-entry cache + this.initialDataLength = 0; } // required methods for a stream. if a particular stream does not @@ -1894,7 +4407,7 @@ var ChunkedStream = (function ChunkedStreamClosure() { getMissingChunks: function ChunkedStream_getMissingChunks() { var chunks = []; for (var chunk = 0, n = this.numChunks; chunk < n; ++chunk) { - if (!this.loadedChunks[chunk]) { + if (!(chunk in this.loadedChunks)) { chunks.push(chunk); } } @@ -1909,7 +4422,7 @@ var ChunkedStream = (function ChunkedStreamClosure() { return this.numChunksLoaded === this.numChunks; }, - onReceiveData: function ChunkedStream_onReceiveData(begin, chunk) { + onReceiveData: function(begin, chunk) { var end = begin + chunk.byteLength; assert(begin % this.chunkSize === 0, 'Bad begin offset: ' + begin); @@ -1917,59 +4430,38 @@ 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 (curChunk = beginChunk; curChunk < endChunk; ++curChunk) { - if (!this.loadedChunks[curChunk]) { - this.loadedChunks[curChunk] = true; + for (var chunk = beginChunk; chunk < endChunk; ++chunk) { + if (!(chunk in this.loadedChunks)) { + this.loadedChunks[chunk] = 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; - } + 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; } }, - 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.progressiveDataLength) { + if (end <= this.initialDataLength) { return; } @@ -1977,22 +4469,21 @@ 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 (!this.loadedChunks[chunk]) { + if (!(chunk in this.loadedChunks)) { throw new MissingDataException(begin, end); } } }, nextEmptyChunk: function ChunkedStream_nextEmptyChunk(beginChunk) { - var chunk, n; - for (chunk = beginChunk, n = this.numChunks; chunk < n; ++chunk) { - if (!this.loadedChunks[chunk]) { + for (var chunk = beginChunk, n = this.numChunks; chunk < n; ++chunk) { + if (!(chunk in this.loadedChunks)) { return chunk; } } // Wrap around to beginning - for (chunk = 0; chunk < beginChunk; ++chunk) { - if (!this.loadedChunks[chunk]) { + for (var chunk = 0; chunk < beginChunk; ++chunk) { + if (!(chunk in this.loadedChunks)) { return chunk; } } @@ -2000,40 +4491,22 @@ var ChunkedStream = (function ChunkedStreamClosure() { }, hasChunk: function ChunkedStream_hasChunk(chunk) { - return !!this.loadedChunks[chunk]; + return chunk in this.loadedChunks; }, 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.ensureByte(pos); + this.ensureRange(pos, pos + 1); 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) { @@ -2047,21 +4520,14 @@ 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; @@ -2074,9 +4540,8 @@ var ChunkedStream = (function ChunkedStreamClosure() { }, skip: function ChunkedStream_skip(n) { - if (!n) { + if (!n) n = 1; - } this.pos += n; }, @@ -2089,8 +4554,6 @@ 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() { @@ -2099,7 +4562,7 @@ var ChunkedStream = (function ChunkedStreamClosure() { var endChunk = Math.floor((this.end - 1) / chunkSize) + 1; var missingChunks = []; for (var chunk = beginChunk; chunk < endChunk; ++chunk) { - if (!this.loadedChunks[chunk]) { + if (!(chunk in this.loadedChunks)) { missingChunks.push(chunk); } } @@ -2121,6 +4584,7 @@ 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; @@ -2161,18 +4625,29 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { this.chunksNeededByRequest = {}; this.requestsByChunk = {}; this.callbacksByRequest = {}; - this.progressiveDataLength = 0; - - this._loadedStreamCapability = createPromiseCapability(); + this.loadedStream = new LegacyPromise(); if (args.initialData) { - this.onReceiveData({chunk: args.initialData}); + this.setInitialData(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._loadedStreamCapability.promise; + return this.loadedStream; }, // Get all the chunks that are not yet loaded and groups them into @@ -2180,7 +4655,7 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { requestAllChunks: function ChunkedStreamManager_requestAllChunks() { var missingChunks = this.stream.getMissingChunks(); this.requestChunks(missingChunks); - return this._loadedStreamCapability.promise; + return this.loadedStream; }, requestChunks: function ChunkedStreamManager_requestChunks(chunks, @@ -2188,9 +4663,8 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { var requestId = this.currRequestId++; var chunksNeeded; - var i, ii; this.chunksNeededByRequest[requestId] = chunksNeeded = {}; - for (i = 0, ii = chunks.length; i < ii; i++) { + for (var i = 0, ii = chunks.length; i < ii; i++) { if (!this.stream.hasChunk(chunks[i])) { chunksNeeded[chunks[i]] = true; } @@ -2221,7 +4695,7 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { var groupedChunksToRequest = this.groupChunks(chunksToRequest); - for (i = 0; i < groupedChunksToRequest.length; ++i) { + for (var 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); @@ -2283,13 +4757,13 @@ 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; @@ -2298,8 +4772,8 @@ 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 @@ -2308,34 +4782,26 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { onReceiveData: function ChunkedStreamManager_onReceiveData(args) { var chunk = args.chunk; - var isProgressive = args.begin === undefined; - var begin = isProgressive ? this.progressiveDataLength : args.begin; + var begin = args.begin; var end = begin + chunk.byteLength; - 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); - } + var beginChunk = this.getBeginChunk(begin); + var endChunk = this.getEndChunk(end); + this.stream.onReceiveData(begin, chunk); if (this.stream.allChunksLoaded()) { - this._loadedStreamCapability.resolve(this.stream); + this.loadedStream.resolve(this.stream); } var loadedRequests = []; - var i, requestId; - for (chunk = beginChunk; chunk < endChunk; ++chunk) { + for (var chunk = beginChunk; chunk < endChunk; ++chunk) { + // The server might return more chunks than requested var requestIds = this.requestsByChunk[chunk] || []; delete this.requestsByChunk[chunk]; - for (i = 0; i < requestIds.length; ++i) { - requestId = requestIds[i]; + for (var i = 0; i < requestIds.length; ++i) { + var requestId = requestIds[i]; var chunksNeeded = this.chunksNeededByRequest[requestId]; if (chunk in chunksNeeded) { delete chunksNeeded[chunk]; @@ -2369,8 +4835,8 @@ var ChunkedStreamManager = (function ChunkedStreamManagerClosure() { } } - for (i = 0; i < loadedRequests.length; ++i) { - requestId = loadedRequests[i]; + for (var i = 0; i < loadedRequests.length; ++i) { + var requestId = loadedRequests[i]; var callback = this.callbacksByRequest[requestId]; delete this.callbacksByRequest[requestId]; if (callback) { @@ -2384,10 +4850,6 @@ 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; @@ -2413,9 +4875,6 @@ 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() { @@ -2427,24 +4886,24 @@ var BasePdfManager = (function BasePdfManagerClosure() { throw new NotImplementedException(); }, - ensureDoc: function BasePdfManager_ensureDoc(prop, args) { - return this.ensure(this.pdfDocument, prop, args); + ensureModel: function BasePdfManager_ensureModel(prop, args) { + return this.ensure(this.pdfModel, prop, args); }, ensureXRef: function BasePdfManager_ensureXRef(prop, args) { - return this.ensure(this.pdfDocument.xref, prop, args); + return this.ensure(this.pdfModel.xref, prop, args); }, ensureCatalog: function BasePdfManager_ensureCatalog(prop, args) { - return this.ensure(this.pdfDocument.catalog, prop, args); + return this.ensure(this.pdfModel.catalog, prop, args); }, getPage: function BasePdfManager_pagePage(pageIndex) { - return this.pdfDocument.getPage(pageIndex); + return this.pdfModel.getPage(pageIndex); }, cleanup: function BasePdfManager_cleanup() { - return this.pdfDocument.cleanup(); + return this.pdfModel.cleanup(); }, ensure: function BasePdfManager_ensure(obj, prop, args) { @@ -2459,22 +4918,13 @@ var BasePdfManager = (function BasePdfManagerClosure() { return new NotImplementedException(); }, - sendProgressiveData: function BasePdfManager_sendProgressiveData(chunk) { - return new NotImplementedException(); - }, - updatePassword: function BasePdfManager_updatePassword(password) { - this.pdfDocument.xref.password = this.password = password; - if (this._passwordChangedCapability) { - this._passwordChangedCapability.resolve(); + this.pdfModel.xref.password = this.password = password; + if (this.passwordChangedPromise) { + this.passwordChangedPromise.resolve(); } }, - passwordChanged: function BasePdfManager_passwordChanged() { - this._passwordChangedCapability = createPromiseCapability(); - return this._passwordChangedCapability.promise; - }, - terminate: function BasePdfManager_terminate() { return new NotImplementedException(); } @@ -2486,9 +4936,9 @@ var BasePdfManager = (function BasePdfManagerClosure() { var LocalPdfManager = (function LocalPdfManagerClosure() { function LocalPdfManager(data, password) { var stream = new Stream(data); - this.pdfDocument = new PDFDocument(this, stream, password); - this._loadedStreamCapability = createPromiseCapability(); - this._loadedStreamCapability.resolve(stream); + this.pdfModel = new PDFDocument(this, stream, password); + this.loadedStream = new LegacyPromise(); + this.loadedStream.resolve(stream); } LocalPdfManager.prototype = Object.create(BasePdfManager.prototype); @@ -2496,25 +4946,28 @@ var LocalPdfManager = (function LocalPdfManagerClosure() { LocalPdfManager.prototype.ensure = function LocalPdfManager_ensure(obj, prop, args) { - 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); + var promise = new LegacyPromise(); + try { + var value = obj[prop]; + var result; + if (typeof(value) === 'function') { + result = value.apply(obj, args); + } else { + result = value; } - }); + promise.resolve(result); + } catch (e) { + console.log(e.stack); + promise.reject(e); + } + return promise; }; LocalPdfManager.prototype.requestRange = function LocalPdfManager_requestRange(begin, end) { - return Promise.resolve(); + var promise = new LegacyPromise(); + promise.resolve(); + return promise; }; LocalPdfManager.prototype.requestLoadedStream = @@ -2523,7 +4976,7 @@ var LocalPdfManager = (function LocalPdfManagerClosure() { LocalPdfManager.prototype.onLoadedStream = function LocalPdfManager_getLoadedStream() { - return this._loadedStreamCapability.promise; + return this.loadedStream; }; LocalPdfManager.prototype.terminate = @@ -2535,6 +4988,9 @@ var LocalPdfManager = (function LocalPdfManagerClosure() { })(); var NetworkPdfManager = (function NetworkPdfManagerClosure() { + + var CHUNK_SIZE = 65536; + function NetworkPdfManager(args, msgHandler) { this.msgHandler = msgHandler; @@ -2547,10 +5003,10 @@ var NetworkPdfManager = (function NetworkPdfManagerClosure() { disableAutoFetch: args.disableAutoFetch, initialData: args.initialData }; - this.streamManager = new ChunkedStreamManager(args.length, RANGE_CHUNK_SIZE, + this.streamManager = new ChunkedStreamManager(args.length, CHUNK_SIZE, args.url, params); - this.pdfDocument = new PDFDocument(this, this.streamManager.getStream(), + this.pdfModel = new PDFDocument(this, this.streamManager.getStream(), args.password); } @@ -2559,39 +5015,42 @@ var NetworkPdfManager = (function NetworkPdfManagerClosure() { NetworkPdfManager.prototype.ensure = function NetworkPdfManager_ensure(obj, prop, args) { - var pdfManager = this; + var promise = new LegacyPromise(); + this.ensureHelper(promise, obj, prop, args); + return promise; + }; - 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); - } + 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; } - ensureHelper(); - }); + this.streamManager.requestRange(e.begin, e.end, function() { + this.ensureHelper(promise, obj, prop, args); + }.bind(this)); + } }; NetworkPdfManager.prototype.requestRange = function NetworkPdfManager_requestRange(begin, end) { - return new Promise(function (resolve) { - this.streamManager.requestRange(begin, end, function() { - resolve(); - }); - }.bind(this)); + var promise = new LegacyPromise(); + this.streamManager.requestRange(begin, end, function() { + promise.resolve(); + }); + return promise; }; NetworkPdfManager.prototype.requestLoadedStream = @@ -2599,11 +5058,6 @@ 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(); @@ -2621,8 +5075,6 @@ 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; @@ -2640,69 +5092,51 @@ var Page = (function PageClosure() { getPageProp: function Page_getPageProp(key) { return this.pageDict.get(key); }, - - getInheritedPageProp: function Page_inheritPageProp(key) { + inheritPageProp: function Page_inheritPageProp(key) { var dict = this.pageDict; - var value = dict.get(key); - while (value === undefined) { + var obj = dict.get(key); + while (obj === undefined) { dict = dict.get('Parent'); - if (!dict) { + if (!dict) break; - } - value = dict.get(key); + obj = dict.get(key); } - return value; + return obj; }, - get content() { return this.getPageProp('Contents'); }, - get 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); + return shadow(this, 'resources', this.inheritPageProp('Resources')); }, - get mediaBox() { - var obj = this.getInheritedPageProp('MediaBox'); + var obj = this.inheritPageProp('MediaBox'); // Reset invalid media box to letter size. - if (!isArray(obj) || obj.length !== 4) { - obj = LETTER_SIZE_MEDIABOX; - } + if (!isArray(obj) || obj.length !== 4) + obj = [0, 0, 612, 792]; return shadow(this, 'mediaBox', obj); }, - get view() { var mediaBox = this.mediaBox; - var cropBox = this.getInheritedPageProp('CropBox'); - if (!isArray(cropBox) || cropBox.length !== 4) { + var cropBox = this.inheritPageProp('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.getInheritedPageProp('Annots')); + return shadow(this, 'annotationRefs', this.inheritPageProp('Annots')); }, - get rotate() { - var rotate = this.getInheritedPageProp('Rotate') || 0; + var rotate = this.inheritPageProp('Rotate') || 0; // Normalize rotation so it's a multiple of 90 and between 0 and 270 if (rotate % 90 !== 0) { rotate = 0; @@ -2715,7 +5149,6 @@ var Page = (function PageClosure() { } return shadow(this, 'rotate', rotate); }, - getContentStream: function Page_getContentStream() { var content = this.content; var stream; @@ -2724,9 +5157,8 @@ 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; @@ -2736,22 +5168,31 @@ var Page = (function PageClosure() { } return stream; }, - - loadResources: function Page_loadResources(keys) { + loadResources: function(keys) { if (!this.resourcesPromise) { - // TODO: add async getInheritedPageProp and remove this. + // TODO: add async inheritPageProp and remove this. this.resourcesPromise = this.pdfManager.ensure(this, 'resources'); } - return this.resourcesPromise.then(function resourceSuccess() { + var promise = new LegacyPromise(); + this.resourcesPromise.then(function resourceSuccess() { var objectLoader = new ObjectLoader(this.resources.map, keys, this.xref); - return objectLoader.load(); + objectLoader.load().then(function objectLoaderSuccess() { + promise.resolve(); + }); }.bind(this)); + return promise; }, - - getOperatorList: function Page_getOperatorList(handler, intent) { + getOperatorList: function Page_getOperatorList(handler) { 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', @@ -2762,53 +5203,53 @@ 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]); - var pageListPromise = dataPromises.then(function(data) { + var dataPromises = Promise.all( + [contentStreamPromise, resourcesPromise], reject); + dataPromises.then(function(data) { var contentStream = data[0]; - var opList = new OperatorList(intent, handler, self.pageIndex); + + + var opList = new OperatorList(handler, self.pageIndex); handler.send('StartRenderPage', { transparency: partialEvaluator.hasBlendModes(self.resources), - pageIndex: self.pageIndex, - intent: intent + pageIndex: self.pageIndex }); - return partialEvaluator.getOperatorList(contentStream, self.resources, - opList).then(function () { - return opList; - }); + partialEvaluator.getOperatorList(contentStream, self.resources, opList); + pageListPromise.resolve(opList); }); var annotationsPromise = pdfManager.ensure(this, 'annotations'); - return Promise.all([pageListPromise, annotationsPromise]).then( - function(datas) { + Promise.all([pageListPromise, annotationsPromise]).then(function(datas) { var pageOpList = datas[0]; var annotations = datas[1]; if (annotations.length === 0) { pageOpList.flush(true); - return pageOpList; + promise.resolve(pageOpList); + return; } var annotationsReadyPromise = Annotation.appendToOperatorList( - annotations, pageOpList, pdfManager, partialEvaluator, intent); - return annotationsReadyPromise.then(function () { + annotations, pageOpList, pdfManager, partialEvaluator); + annotationsReadyPromise.then(function () { pageOpList.flush(true); - return pageOpList; - }); - }); - }, + promise.resolve(pageOpList); + }, reject); + }, reject); + return promise; + }, extractTextContent: function Page_extractTextContent() { var handler = { on: function nullHandlerOn() {}, @@ -2817,6 +5258,8 @@ var Page = (function PageClosure() { var self = this; + var textContentPromise = new LegacyPromise(); + var pdfManager = this.pdfManager; var contentStreamPromise = pdfManager.ensure(this, 'getContentStream', []); @@ -2829,17 +5272,19 @@ var Page = (function PageClosure() { var dataPromises = Promise.all([contentStreamPromise, resourcesPromise]); - return dataPromises.then(function(data) { + 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); - return partialEvaluator.getTextContent(contentStream, - self.resources); + var bidiTexts = partialEvaluator.getTextContent(contentStream, + self.resources); + textContentPromise.resolve(bidiTexts); }); + + return textContentPromise; }, getAnnotationsData: function Page_getAnnotationsData() { @@ -2853,7 +5298,7 @@ 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); @@ -2877,17 +5322,16 @@ 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) { - assert(stream.length > 0, 'stream must have data'); + assertWellFormed(stream.length > 0, 'stream must have data'); this.pdfManager = pdfManager; this.stream = stream; var xref = new XRef(this.stream, password, pdfManager); @@ -2897,19 +5341,15 @@ var PDFDocument = (function PDFDocumentClosure() { function find(stream, needle, limit, backwards) { var pos = stream.pos; var end = stream.end; - var strBuf = []; - if (pos + limit > end) { + var str = ''; + if (pos + limit > end) limit = end - pos; - } - for (var n = 0; n < limit; ++n) { - strBuf.push(String.fromCharCode(stream.getByte())); - } - var str = strBuf.join(''); + for (var n = 0; n < limit; ++n) + str += String.fromCharCode(stream.getByte()); 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 */ } @@ -2954,15 +5394,22 @@ var PDFDocument = (function PDFDocumentClosure() { }, get linearization() { - var linearization = null; - if (this.stream.length) { + var length = this.stream.length; + var linearization = false; + if (length) { try { - linearization = Linearization.create(this.stream); + linearization = new Linearization(this.stream); + if (linearization.length != length) { + linearization = false; + } } catch (err) { if (err instanceof MissingDataException) { throw err; } - info(err); + + info('The linearization data is not available ' + + 'or unreadable PDF data is found'); + linearization = false; } } // shadow the prototype getter with a data property @@ -2975,18 +5422,16 @@ 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); } @@ -3002,9 +5447,8 @@ 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 @@ -3013,9 +5457,8 @@ 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); }, @@ -3076,8 +5519,8 @@ 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 + '"'); } @@ -3123,13 +5566,6 @@ 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; })(); @@ -3144,7 +5580,10 @@ var Cmd = (function CmdClosure() { Cmd.get = function Cmd_get(cmd) { var cmdValue = cmdCache[cmd]; - return (cmdValue ? cmdValue : (cmdCache[cmd] = new Cmd(cmd))); + if (cmdValue) + return cmdValue; + + return cmdCache[cmd] = new Cmd(cmd); }; return Cmd; @@ -3155,30 +5594,11 @@ 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 } @@ -3191,12 +5611,12 @@ 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; @@ -3206,26 +5626,33 @@ 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); } - return Promise.resolve(value); + promise = new LegacyPromise(); + promise.resolve(value); + return promise; } - 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); } - return Promise.resolve(value); + promise = new LegacyPromise(); + promise.resolve(value); + return promise; } value = this.map[key3] || null; if (xref) { return xref.fetchIfRefAsync(value); } - return Promise.resolve(value); + promise = new LegacyPromise(); + promise.resolve(value); + return promise; }, // no dereferencing @@ -3235,52 +5662,10 @@ var Dict = (function DictClosure() { // creates new map and dereferences all Refs getAll: function Dict_getAll() { - 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; + var all = {}; + for (var key in this.map) { + var obj = this.get(key); + all[key] = obj instanceof Dict ? obj.getAll() : obj; } return all; }, @@ -3300,8 +5685,6 @@ var Dict = (function DictClosure() { } }; - Dict.empty = new Dict(null); - return Dict; })(); @@ -3311,23 +5694,13 @@ var Ref = (function RefClosure() { this.gen = gen; } - 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; - } - }; + Ref.prototype = {}; 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 = {}; @@ -3335,15 +5708,15 @@ var RefSet = (function RefSetClosure() { RefSet.prototype = { has: function RefSet_has(ref) { - return ref.toString() in this.dict; + return ('R' + ref.num + '.' + ref.gen) in this.dict; }, put: function RefSet_put(ref) { - this.dict[ref.toString()] = true; + this.dict['R' + ref.num + '.' + ref.gen] = true; }, remove: function RefSet_remove(ref) { - delete this.dict[ref.toString()]; + delete this.dict['R' + ref.num + '.' + ref.gen]; } }; @@ -3357,19 +5730,15 @@ var RefSetCache = (function RefSetCacheClosure() { RefSetCache.prototype = { get: function RefSetCache_get(ref) { - return this.dict[ref.toString()]; + return this.dict['R' + ref.num + '.' + ref.gen]; }, has: function RefSetCache_has(ref) { - return ref.toString() in this.dict; + return ('R' + ref.num + '.' + ref.gen) in this.dict; }, put: function RefSetCache_put(ref, obj) { - this.dict[ref.toString()] = obj; - }, - - putAlias: function RefSetCache_putAlias(ref, aliasRef) { - this.dict[ref.toString()] = this.get(aliasRef); + this.dict['R' + ref.num + '.' + ref.gen] = obj; }, forEach: function RefSetCache_forEach(fn, thisArg) { @@ -3392,7 +5761,7 @@ var Catalog = (function CatalogClosure() { this.xref = xref; this.catDict = xref.getCatalogObj(); this.fontCache = new RefSetCache(); - assert(isDict(this.catDict), + assertWellFormed(isDict(this.catDict), 'catalog object is not a dictionary'); this.pagePromises = []; @@ -3401,12 +5770,11 @@ 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; @@ -3433,7 +5801,7 @@ var Catalog = (function CatalogClosure() { }, get toplevelPagesDict() { var pagesObj = this.catDict.get('Pages'); - assert(isDict(pagesObj), 'invalid top-level pages dictionary'); + assertWellFormed(isDict(pagesObj), 'invalid top-level pages dictionary'); // shadow the prototype getter return shadow(this, 'toplevelPagesDict', pagesObj); }, @@ -3464,20 +5832,17 @@ 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 = { @@ -3503,11 +5868,11 @@ 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'); - assert( + assertWellFormed( isInt(obj), 'page count in top level pages object is not an integer' ); @@ -3522,19 +5887,16 @@ var Catalog = (function CatalogClosure() { var xref = this.xref; var dests = {}, nameTreeRef, nameDictionaryRef; var obj = this.catDict.get('Names'); - if (obj && obj.has('Dests')) { + if (obj) 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); }); } @@ -3550,62 +5912,6 @@ 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'); @@ -3618,7 +5924,7 @@ var Catalog = (function CatalogClosure() { if (!names.hasOwnProperty(name)) { continue; } - // We don't really use the JavaScript right now. This code is + // We don't really use the JavaScript right now so this code is // defensive so we don't cause errors on document load. var jsDict = names[name]; if (!isDict(jsDict)) { @@ -3638,37 +5944,15 @@ 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() { - var promises = []; - this.fontCache.forEach(function (promise) { - promises.push(promise); + this.fontCache.forEach(function (font) { + delete font.sent; + delete font.translated; }); - 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)); + this.fontCache.clear(); }, getPage: function Catalog_getPage(pageIndex) { @@ -3686,7 +5970,7 @@ var Catalog = (function CatalogClosure() { }, getPageDict: function Catalog_getPageDict(pageIndex) { - var capability = createPromiseCapability(); + var promise = new LegacyPromise(); var nodesToVisit = [this.catDict.getRaw('Pages')]; var currentPageIndex = 0; var xref = this.xref; @@ -3699,7 +5983,7 @@ var Catalog = (function CatalogClosure() { xref.fetchAsync(currentNode).then(function (obj) { if ((isDict(obj, 'Page') || (isDict(obj) && !obj.has('Kids')))) { if (pageIndex === currentPageIndex) { - capability.resolve([obj, currentNode]); + promise.resolve([obj, currentNode]); } else { currentPageIndex++; next(); @@ -3708,7 +5992,7 @@ var Catalog = (function CatalogClosure() { } nodesToVisit.push(obj); next(); - }, capability.reject); + }.bind(this), promise.reject.bind(promise)); return; } @@ -3743,10 +6027,10 @@ var Catalog = (function CatalogClosure() { } } } - capability.reject('Page index ' + pageIndex + ' not found.'); + promise.reject('Page index ' + pageIndex + ' not found.'); } next(); - return capability.promise; + return promise; }, getPageIndex: function Catalog_getPageIndex(ref) { @@ -3776,8 +6060,8 @@ 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 a ref'); - if (kid.num === kidRef.num) { + assert(isRef(kid), 'kids must be an ref'); + if (kid.num == kidRef.num) { found = true; break; } @@ -3821,16 +6105,13 @@ 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 = { @@ -3854,8 +6135,8 @@ 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 @@ -3879,9 +6160,9 @@ 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 @@ -3892,14 +6173,9 @@ 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(); - - // The pdflib PDF generator can generate a nested trailer dictionary - if (!isDict(dict) && dict.dict) { - dict = dict.dict; - } - if (!isDict(dict)) { + if (!isDict(dict)) error('Invalid XRef table: could not parse trailer dictionary'); - } + delete this.tableState; return dict; @@ -3936,9 +6212,9 @@ 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; @@ -3951,21 +6227,21 @@ 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; @@ -3983,9 +6259,9 @@ 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; }, @@ -4025,12 +6301,13 @@ 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); @@ -4040,19 +6317,15 @@ 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 is 1 - if (typeFieldWidth === 0) { + // if type field is absent, its default value = 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; @@ -4068,9 +6341,8 @@ 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; @@ -4078,16 +6350,14 @@ 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]; } @@ -4099,12 +6369,11 @@ 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++; } @@ -4121,6 +6390,8 @@ 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) { @@ -4163,38 +6434,32 @@ var XRef = (function XRefClosure() { } position += contentLength; - } else { + } else position += token.length + 1; - } } // reading XRef streams - var i, ii; - for (i = 0, ii = xrefStms.length; i < ii; ++i) { + for (var i = 0, ii = xrefStms.length; i < ii; ++i) { this.startXRefQueue.push(xrefStms[i]); this.readXRef(/* recoveryMode */ true); } // finding main trailer var dict; - for (i = 0, ii = trailers.length; i < ii; ++i) { + for (var i = 0, ii = trailers.length; i < ii; ++i) { stream.pos = trailers[i]; - var parser = new Parser(new Lexer(stream), true, this); + var parser = new Parser(new Lexer(stream), true, null); 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'); @@ -4207,14 +6472,15 @@ var XRef = (function XRefClosure() { while (this.startXRefQueue.length) { var startXRef = this.startXRefQueue[0]; - stream.pos = startXRef + stream.start; + stream.pos = startXRef; - var parser = new Parser(new Lexer(stream), true, this); + var parser = new Parser(new Lexer(stream), true, null); var obj = parser.getObj(); var dict; // Get dictionary if (isCmd(obj, 'xref')) { + // Parse end-of-file XRef dict = this.processXRefTable(parser); if (!this.topDict) { @@ -4233,6 +6499,7 @@ var XRef = (function XRefClosure() { } } } else if (isInt(obj)) { + // Parse in-stream XRef if (!isInt(parser.getObj()) || !isCmd(parser.getObj(), 'obj') || @@ -4243,9 +6510,9 @@ 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'); } @@ -4271,109 +6538,95 @@ var XRef = (function XRefClosure() { info('(while reading XRef): ' + e); } - if (recoveryMode) { + if (recoveryMode) return; - } throw new XRefParseException(); }, getEntry: function XRef_getEntry(i) { - var xrefEntry = this.entries[i]; - if (xrefEntry && !xrefEntry.free && xrefEntry.offset) { - return xrefEntry; - } - return null; + var e = this.entries[i]; + if (e === null) + return null; + return e.free || !e.offset ? null : e; // returns null if entry is free }, - fetchIfRef: function XRef_fetchIfRef(obj) { - if (!isRef(obj)) { + if (!isRef(obj)) return obj; - } return this.fetch(obj); }, - fetch: function XRef_fetch(ref, suppressEncryption) { - assert(isRef(ref), 'ref object is not a reference'); + assertWellFormed(isRef(ref), 'ref object is not a reference'); var num = ref.num; + var e; if (num in this.cache) { - var cacheEntry = this.cache[num]; - return cacheEntry; + e = this.cache[num]; + if (e instanceof Stream) { + return e.makeSubStream(e.start, e.length, e.dict); + } + return e; } - var xrefEntry = this.getEntry(num); + e = this.getEntry(num); // the referenced entry can be free - if (xrefEntry === null) { - return (this.cache[num] = null); - } + if (e === null) + return (this.cache[num] = e); - 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; - } + 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'); } - 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 (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)) { + // compressed entry + var tableOffset = e.offset; + 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'); } - var parser = new Parser(new Lexer(stream), false, this); + parser = new Parser(new Lexer(stream), false, this); parser.allowStreams = true; - var i, entries = [], num, nums = []; + var i, entries = [], nums = []; // read the object numbers to populate cache for (i = 0; i < n; ++i) { num = parser.getObj(); @@ -4395,38 +6648,36 @@ var XRef = (function XRefClosure() { this.cache[num] = entries[i]; } } - xrefEntry = entries[xrefEntry.gen]; - if (xrefEntry === undefined) { + e = entries[e.gen]; + if (e === undefined) { error('bad XRef entry for compressed object'); } - return xrefEntry; + return e; }, - fetchIfRefAsync: function XRef_fetchIfRefAsync(obj) { if (!isRef(obj)) { - return Promise.resolve(obj); + var promise = new LegacyPromise(); + promise.resolve(obj); + return promise; } return this.fetchAsync(obj); }, - fetchAsync: function XRef_fetchAsync(ref, suppressEncryption) { - var streamManager = this.stream.manager; - var xref = this; - return new Promise(function tryFetch(resolve, reject) { + var promise = new LegacyPromise(); + var tryFetch = function (promise) { try { - resolve(xref.fetch(ref, suppressEncryption)); + promise.resolve(this.fetch(ref, suppressEncryption)); } catch (e) { if (e instanceof MissingDataException) { - streamManager.requestRange(e.begin, e.end, function () { - tryFetch(resolve, reject); - }); + this.stream.manager.requestRange(e.begin, e.end, tryFetch); return; } - reject(e); + promise.reject(e); } - }); + }.bind(this, promise); + tryFetch(); + return promise; }, - getCatalogObj: function XRef_getCatalogObj() { return this.root; } @@ -4436,8 +6687,8 @@ var XRef = (function XRefClosure() { })(); /** - * A NameTree is like a Dict but has some advantageous properties, see the - * spec (7.9.6) for more details. + * A NameTree is like a Dict but has some adventagous 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() { @@ -4467,9 +6718,8 @@ 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); } @@ -4483,172 +6733,11 @@ 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 @@ -4661,12 +6750,12 @@ var FileSpec = (function FileSpecClosure() { * 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)) { @@ -4675,14 +6764,14 @@ var ObjectLoader = (function() { map = node.dict.map; } for (var key in map) { - value = map[key]; + var value = map[key]; if (mayHaveChildren(value)) { nodesToVisit.push(value); } } } else if (isArray(node)) { for (var i = 0, ii = node.length; i < ii; i++) { - value = node[i]; + var value = node[i]; if (mayHaveChildren(value)) { nodesToVisit.push(value); } @@ -4698,14 +6787,15 @@ var ObjectLoader = (function() { } ObjectLoader.prototype = { + load: function ObjectLoader_load() { var keys = this.keys; - this.capability = createPromiseCapability(); + this.promise = new LegacyPromise(); // 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.capability.resolve(); - return this.capability.promise; + this.promise.resolve(); + return this.promise; } this.refSet = new RefSet(); @@ -4716,7 +6806,7 @@ var ObjectLoader = (function() { } this.walk(nodesToVisit); - return this.capability.promise; + return this.promise; }, walk: function ObjectLoader_walk(nodesToVisit) { @@ -4783,14 +6873,17 @@ var ObjectLoader = (function() { } // Everything is loaded. this.refSet = null; - this.capability.resolve(); + this.promise.resolve(); } + }; return ObjectLoader; })(); + + var ISOAdobeCharset = [ '.notdef', 'space', 'exclam', 'quotedbl', 'numbersign', 'dollar', 'percent', 'ampersand', 'quoteright', 'parenleft', 'parenright', @@ -4893,2858 +6986,6935 @@ var ExpertSubsetCharset = [ -var DEFAULT_ICON_SIZE = 22; // px -var SUPPORTED_TYPES = ['Link', 'Text', 'Widget']; +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, 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{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 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() { @@ -7753,9 +13923,8 @@ 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; @@ -7815,14 +13984,12 @@ 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; @@ -7831,11 +13998,13 @@ 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) { @@ -7864,487 +14033,15 @@ 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() { } @@ -8430,14 +14127,7 @@ 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, @@ -8491,21 +14181,14 @@ 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; @@ -8517,43 +14200,28 @@ 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; @@ -8561,24 +14229,12 @@ 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]]; @@ -8588,85 +14244,6 @@ 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); @@ -8680,15 +14257,13 @@ 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); @@ -8706,23 +14281,12 @@ var AES128Cipher = (function AES128CipherClosure() { 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); - } + outputLength -= lastBlock[15]; + result[result.length - 1] = lastBlock.subarray(0, 16 - lastBlock[15]); } 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; } @@ -8731,9 +14295,8 @@ 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; @@ -8745,707 +14308,21 @@ 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, length) { + createStream: function CipherTransform_createStream(stream) { var cipher = new this.streamCipherConstructor(); - return new DecryptStream(stream, length, + return new DecryptStream(stream, function cipherTransformDecryptStream(data, finalize) { return cipher.decryptBlock(data, finalize); } @@ -9468,63 +14345,28 @@ 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; @@ -9535,53 +14377,46 @@ 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); - checkData = cipher.encryptBlock(calculateMD5(hashData, 0, i)); + var 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++]; @@ -9590,7 +14425,7 @@ 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); } } @@ -9599,9 +14434,8 @@ 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); } @@ -9612,66 +14446,39 @@ var CipherTransformFactory = (function CipherTransformFactoryClosure() { return userPassword; } - var identityName = Name.get('Identity'); + var identityName = new Name('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 !== 5)) { + (algorithm != 1 && algorithm != 2 && algorithm != 4)) 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'); - // meaningful when V is 4 or 5 - var encryptMetadata = ((algorithm === 4 || algorithm === 5) && - dict.get('EncryptMetadata') !== false); + var encryptMetadata = algorithm == 4 && // meaningful when V is 4 + dict.get('EncryptMetadata') !== false; // makes true as default value this.encryptMetadata = encryptMetadata; var fileIdBytes = stringToBytes(fileId); var passwordBytes; - if (password) { + if (password) passwordBytes = stringToBytes(password); - } - 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); - } + var encryptionKey = prepareKeyData(fileIdBytes, passwordBytes, + ownerPassword, userPassword, flags, + revision, keyLength, encryptMetadata); if (!encryptionKey && !password) { throw new PasswordException('No password given', PasswordResponses.NEED_PASSWORD); @@ -9684,14 +14491,13 @@ 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; @@ -9701,9 +14507,8 @@ 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; @@ -9722,27 +14527,23 @@ 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)); - }; - } - if ('AESV3' === cfm.name) { - return function cipherTransformFactoryBuildCipherConstructorAESV3() { - return new AES256Cipher(key); + return new AES128Cipher( + buildObjectKey(num, gen, key, true)); }; } error('Unknown crypto method'); @@ -9751,12 +14552,12 @@ var CipherTransformFactory = (function CipherTransformFactoryClosure() { CipherTransformFactory.prototype = { createCipherTransform: function CipherTransformFactory_createCipherTransform(num, gen) { - if (this.algorithm === 4 || this.algorithm === 5) { + if (this.algorithm == 4) { 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); @@ -9770,785 +14571,14 @@ 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; @@ -10558,28 +14588,6 @@ 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 = { @@ -10588,20 +14596,14 @@ 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 (key in graphicStates) { + for (var key in graphicStates) { var graphicState = graphicStates[key]; var bm = graphicState['BM']; if (isName(bm) && bm.name !== 'Normal') { @@ -10615,26 +14617,14 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { continue; } xObjects = xObjects.getAll(); - for (key in xObjects) { + for (var 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'); - // Checking objId to detect an infinite loop. - if (isDict(xResources) && - (!xResources.objId || !processed[xResources.objId])) { + if (isDict(xResources)) { nodes.push(xResources); - if (xResources.objId) { - processed[xResources.objId] = true; - } } } } @@ -10644,7 +14634,9 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { buildFormXObject: function PartialEvaluator_buildFormXObject(resources, xobj, smask, operatorList, - initialState) { + state) { + var self = this; + var matrix = xobj.dict.get('Matrix'); var bbox = xobj.dict.get('BBox'); var group = xobj.dict.get('Group'); @@ -10652,63 +14644,47 @@ 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); - colorSpace = (group.has('CS') ? - ColorSpace.parse(group.get('CS'), this.xref, resources) : null); + 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. } - - 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]); - return this.getOperatorList(xobj, - (xobj.dict.get('Resources') || resources), operatorList, initialState). - then(function () { - operatorList.addOp(OPS.paintFormXObjectEnd, []); + this.getOperatorList(xobj, xobj.dict.get('Resources') || resources, + operatorList, state); + 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, - cacheKey, cache) { + buildPaintImageXObject: function PartialEvaluator_buildPaintImageXObject( + resources, image, inline, operatorList) { 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 imgData, args; + var imageMask = dict.get('ImageMask', 'IM') || false; if (imageMask) { - // This depends on a tmpCanvas being filled with the + // This depends on a tmpCanvas beeing 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 @@ -10719,137 +14695,109 @@ 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; - 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; - } + operatorList.addOp(OPS.paintImageMaskXObject, + [PDFImage.createMask(imgArray, width, height, inverseDecode)] + ); 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); - // We force the use of RGBA_32BPP images here, because we can't handle - // any other kind. - imgData = imageObj.createImageData(/* forceRGBA = */ true); + var imgData = imageObj.getImageData(); 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); - args = [objId, w, h]; + var 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(self.handler, self.xref, resources, image, inline). - then(function(imageObj) { - var imgData = imageObj.createImageData(/* forceRGBA = */ false); + + PDFImage.buildImage(function(imageObj) { + var imgData = imageObj.getImageData(); self.handler.send('obj', [objId, self.pageIndex, 'Image', imgData], - [imgData.data.buffer]); - }).then(null, function (reason) { - warn('Unable to decode image: ' + reason); - self.handler.send('obj', [objId, self.pageIndex, 'Image', null]); - }); + null, [imgData.data.buffer]); + }, self.handler, self.xref, resources, image, inline); operatorList.addOp(OPS.paintImageXObject, args); - if (cacheKey) { - cache.key = cacheKey; - cache.fn = OPS.paintImageXObject; - cache.args = args; - } }, - 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) { + handleTilingType: function PartialEvaluator_handleTilingType( + fn, args, resources, pattern, patternDict, + operatorList) { // Create an IR of the pattern code. - 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)); - }); + 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)); }, - handleSetFont: - function PartialEvaluator_handleSetFont(resources, fontArgs, fontRef, - operatorList, state) { + handleSetFont: function PartialEvaluator_handleSetFont( + resources, fontArgs, fontRef, operatorList) { + // TODO(mack): Not needed? var fontName; if (fontArgs) { fontArgs = fontArgs.slice(); fontName = fontArgs[0].name; } - var self = this; - 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; - }); + 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; }, - handleText: function PartialEvaluator_handleText(chars, state) { - var font = state.font; + handleText: function PartialEvaluator_handleText(chars) { + var font = this.state.font.translated; var glyphs = font.charsToGlyphs(chars); - var isAddToPathSet = !!(state.textRenderingMode & + var isAddToPathSet = !!(this.state.textRenderingMode & TextRenderingMode.ADD_TO_PATH_FLAG); if (font.data && (isAddToPathSet || PDFJS.disableFontFace)) { - var buildPath = function (fontChar) { + for (var i = 0; i < glyphs.length; i++) { + if (glyphs[i] === null) { + continue; + } + var fontChar = glyphs[i].fontChar; if (!font.renderer.hasBuiltPath(fontChar)) { var path = font.renderer.getPathJs(fontChar); this.handler.send('commonobj', [ @@ -10858,21 +14806,6 @@ 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); - } } } @@ -10880,15 +14813,12 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { }, setGState: function PartialEvaluator_setGState(resources, gState, - operatorList, xref, - stateManager) { - // This array holds the converted/processed state data. - var gStateObj = []; - var gStateMap = gState.map; + operatorList) { + var self = this; - var promise = Promise.resolve(); - for (var key in gStateMap) { - var value = gStateMap[key]; + // 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) { switch (key) { case 'Type': break; @@ -10904,37 +14834,21 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { gStateObj.push([key, value]); break; case 'Font': - 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]]]); - }); - }); + var loadedName = self.handleSetFont(resources, null, value[0], + operatorList); + operatorList.addDependency(loadedName); + gStateObj.push([key, [loadedName, value[1]]]); break; case 'BM': gStateObj.push([key, value]); break; case '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'); - } - + // We support the default so don't trigger a warning bar. + if (!isName(value) || value.name != 'None') + UnsupportedManager.notify(UNSUPPORTED_FEATURES.smask); break; // Only generate info log messages for the following since - // they are unlikely to have a big impact on the rendering. + // they are unlikey to have a big impact on the rendering. case 'OP': case 'op': case 'OPM': @@ -10957,20 +14871,29 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { break; } } - return promise.then(function () { - if (gStateObj.length >= 0) { - operatorList.addOp(OPS.setGState, [gStateObj]); - } - }); + + // 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]); }, loadFont: function PartialEvaluator_loadFont(fontName, font, xref, - resources) { + resources, + parentOperatorList) { function errorFont() { - return Promise.resolve(new TranslatedFont('g_font_error', - new ErrorFont('Font ' + fontName + ' is not available'), font)); + return { + translated: new ErrorFont('Font ' + fontName + ' is not available'), + loadedName: 'g_font_error' + }; } + var fontRef; if (font) { // Loading by ref. assert(isRef(font)); @@ -10984,11 +14907,6 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { return errorFont(); } } - if (!fontRef) { - warn('fontRef not available'); - return errorFont(); - } - if (this.fontCache.has(fontRef)) { return this.fontCache.get(fontRef); } @@ -10997,216 +14915,140 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { if (!isDict(font)) { return errorFont(); } - - // 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 + // Workaround for bad PDF generators that doesn'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, fontCapability.promise); + this.fontCache.put(fontRef, font); } - // 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, '') : 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); + fontName.replace(/\W/g, '') : (fontRef.num + '_' + fontRef.gen)); + if (!font.translated) { + var translated; try { - // 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) { } - - 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 = []; - } - 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); + translated = this.translateFont(font, xref); + } catch (e) { + UnsupportedManager.notify(UNSUPPORTED_FEATURES.font); + translated = new ErrorFont(e instanceof Error ? e.message : e); } + font.translated = translated; } - // TODO shall we fail here? - operatorList.addOp(fn, args); - return Promise.resolve(); + + 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; + } + return font; }, getOperatorList: function PartialEvaluator_getOperatorList(stream, resources, operatorList, - initialState) { + evaluatorState) { var self = this; var xref = this.xref; - var imageCache = {}; + var handler = this.handler; - assert(operatorList); + operatorList = operatorList || new OperatorList(); - 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(); + 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); + } - 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 promise = new LegacyPromise(); + var operation; + while ((operation = preprocessor.read())) { var args = operation.args; var fn = operation.fn; - switch (fn | 0) { + 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; 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) { - assert(isStream(xobj), 'XObject should be a stream'); + assertWellFormed( + isStream(xobj), 'XObject should be a stream'); var type = xobj.dict.get('Subtype'); - assert(isName(type), - 'XObject should have a Name subtype'); + assertWellFormed( + isName(type), + 'XObject should have a Name subtype' + ); - 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, name, imageCache); - args = null; + if ('Form' == type.name) { + self.buildFormXObject(resources, xobj, null, operatorList, + preprocessor.getState()); + args = []; 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'); + } else if ('Image' == type.name) { + self.buildPaintImageXObject(resources, xobj, false, + operatorList); + args = []; continue; } else { error('Unhandled XObject subtype ' + type.name); @@ -11214,143 +15056,65 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { } break; case OPS.setFont: - var fontSize = args[1]; // eagerly collect all fonts - 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); + var loadedName = self.handleSetFont(resources, args, null, + operatorList); + operatorList.addDependency(loadedName); + args[0] = loadedName; + break; case OPS.endInlineImage: - var cacheKey = args[0].cacheKey; - if (cacheKey && imageCache.key === cacheKey) { - operatorList.addOp(imageCache.fn, imageCache.args); - args = null; - continue; - } self.buildPaintImageXObject(resources, args[0], true, - operatorList, cacheKey, imageCache); - args = null; + 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; + } + break; case OPS.showText: - args[0] = self.handleText(args[0], stateManager.state); + args[0] = this.handleText(args[0]); break; case OPS.showSpacedText: var arr = args[0]; - var combinedGlyphs = []; var arrLength = arr.length; - 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); + for (var i = 0; i < arrLength; ++i) { + if (isString(arr[i])) { + arr[i] = this.handleText(arr[i]); } } - args[0] = combinedGlyphs; - fn = OPS.showText; break; case OPS.nextLineShowText: - operatorList.addOp(OPS.nextLine); - args[0] = self.handleText(args[0], stateManager.state); - fn = OPS.showText; + args[0] = this.handleText(args[0]); break; case OPS.nextLineSetSpacingShowText: - 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; + args[2] = this.handleText(args[2]); break; case OPS.setTextRenderingMode: - stateManager.state.textRenderingMode = args[0]; + this.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: - 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; + args = [ColorSpace.parseToIR(args[0], xref, resources)]; 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; @@ -11359,225 +15123,74 @@ 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); - 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); + self.setGState(resources, gState, operatorList); + args = []; continue; - case OPS.rectangle: - self.buildPath(operatorList, fn, args); - continue; - } + } // switch + operatorList.addOp(fn, args); - } - 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(); - }); + } + + // 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; }, - getTextContent: function PartialEvaluator_getTextContent(stream, resources, - stateManager) { + getTextContent: function PartialEvaluator_getTextContent( + stream, resources, state) { - stateManager = (stateManager || new StateManager(new TextState())); - - var textContent = { - items: [], - styles: Object.create(null) - }; - var bidiTexts = textContent.items; + var bidiTexts; 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; - resources = (xref.fetchIfRef(resources) || Dict.empty); + function handleSetFont(fontName, fontRef) { + return self.loadFont(fontName, fontRef, xref, resources, null); + } + 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, stateManager); + var preprocessor = new EvaluatorPreprocessor(stream, xref); + var res = resources; - 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 chunk = ''; + var font = null; + var charSpace = 0, wordSpace = 0; + var operation; + while ((operation = preprocessor.read())) { var fn = operation.fn; - args = operation.args; - - switch (fn | 0) { + var args = operation.args; + switch (fn) { + // TODO: Add support for SAVE/RESTORE and XFORM here. case OPS.setFont: + font = handleSetFont(args[0].name).translated; textState.fontSize = args[1]; - return handleSetFont(args[0].name).then(function() { - next(resolve, reject); - }, reject); + break; case OPS.setTextRise: textState.textRise = args[0]; break; @@ -11588,176 +15201,146 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { textState.leading = args[0]; break; case OPS.moveText: - textState.translateTextLineMatrix(args[0], args[1]); - textState.textMatrix = textState.textLineMatrix.slice(); + textState.translateTextMatrix(args[0], args[1]); break; case OPS.setLeadingMoveText: textState.leading = -args[1]; - textState.translateTextLineMatrix(args[0], args[1]); - textState.textMatrix = textState.textLineMatrix.slice(); + textState.translateTextMatrix(args[0], args[1]); break; case OPS.nextLine: - textState.carriageReturn(); + textState.translateTextMatrix(0, -textState.leading); break; case OPS.setTextMatrix: - 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]); + textState.setTextMatrix(args[0], args[1], + args[2], args[3], args[4], args[5]); break; case OPS.setCharSpacing: - textState.charSpacing = args[0]; + charSpace = args[0]; break; case OPS.setWordSpacing: - textState.wordSpacing = args[0]; + wordSpace = args[0]; break; case OPS.beginText: - textState.textMatrix = IDENTITY_MATRIX.slice(); - textState.textLineMatrix = IDENTITY_MATRIX.slice(); + textState.initialiseTextObj(); 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') { - 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(' '); + 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 += ' '; } + } else if (fakeSpaces > SPACE_FACTOR) { + chunk += ' '; } } } - bidiTexts.push(runBidi(textChunk)); break; case OPS.showText: - bidiTexts.push(runBidi(buildTextGeometry(args[0]))); + chunk += fontCharsToUnicode(args[0], font); break; case OPS.nextLineShowText: - textState.carriageReturn(); - bidiTexts.push(runBidi(buildTextGeometry(args[0]))); + // 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); break; case OPS.nextLineSetSpacingShowText: - textState.wordSpacing = args[0]; - textState.charSpacing = args[1]; - textState.carriageReturn(); - bidiTexts.push(runBidi(buildTextGeometry(args[2]))); + // Note comment in "'" + chunk += fontCharsToUnicode(args[2], font); 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') || Dict.empty); + xobjs = resources.get('XObject') || new Dict(); } var name = args[0].name; - if (xobjsCache.key === name) { - if (xobjsCache.texts) { - Util.appendToArray(bidiTexts, xobjsCache.texts.items); - Util.extendObj(textContent.styles, xobjsCache.texts.styles); - } - break; - } - var xobj = xobjs.get(name); - if (!xobj) { + if (!xobj) break; - } - assert(isStream(xobj), 'XObject should be a stream'); + assertWellFormed(isStream(xobj), 'XObject should be a stream'); var type = xobj.dict.get('Subtype'); - assert(isName(type), - 'XObject should have a Name subtype'); + assertWellFormed( + isName(type), + 'XObject should have a Name subtype' + ); - if ('Form' !== type.name) { - xobjsCache.key = name; - xobjsCache.texts = null; + if ('Form' !== type.name) 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); + state = this.getTextContent( + xobj, + xobj.dict.get('Resources') || resources, + state + ); + break; 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 gsStateMap = extGState.get(dictName.name); - var gsStateFont = null; - for (var key in gsStateMap) { - if (key === 'Font') { - assert(!gsStateFont); - gsStateFont = gsStateMap[key]; + var gsState = extGState.get(dictName.name); + + for (var i = 0; i < gsState.length; i++) { + if (gsState[i] === 'Font') { + font = handleSetFont(args[0].name).translated; } } - if (gsStateFont) { - textState.fontSize = gsStateFont[1]; - return handleSetFont(gsStateFont[0]).then(function() { - next(resolve, reject); - }, reject); - } break; } // switch - } // while - if (stop) { - deferred.then(function () { - next(resolve, reject); - }); - return; - } - resolve(textContent); - }); + + 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; }, 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); - } + var toUnicode = dict.get('ToUnicode') || + baseDict.get('ToUnicode'); + if (toUnicode) + properties.toUnicode = this.readToUnicode(toUnicode, xref, properties); + if (properties.composite) { // CIDSystemInfo helps to match CID to glyphs var cidSystemInfo = dict.get('CIDSystemInfo'); @@ -11770,91 +15353,84 @@ 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 - // 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. + // 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; var differences = []; - var baseEncodingName = null; - var encoding; + 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; + } if (dict.has('Encoding')) { - encoding = dict.get('Encoding'); + var encoding = dict.get('Encoding'); if (isDict(encoding)) { - baseEncodingName = encoding.get('BaseEncoding'); - baseEncodingName = (isName(baseEncodingName) ? - baseEncodingName.name : null); + var baseName = encoding.get('BaseEncoding'); + if (baseName) { + overridableEncoding = false; + hasEncoding = true; + baseEncoding = Encodings[baseName.name]; + } + // 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)) { - baseEncodingName = encoding.name; + overridableEncoding = false; + hasEncoding = true; + baseEncoding = Encodings[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.baseEncodingName = baseEncodingName; - properties.dict = dict; + properties.baseEncoding = baseEncoding; + properties.hasEncoding = hasEncoding; + properties.overridableEncoding = overridableEncoding; }, - readToUnicode: function PartialEvaluator_readToUnicode(toUnicode) { - var cmap, cmapObj = toUnicode; + readToUnicode: function PartialEvaluator_readToUnicode(toUnicode, xref, + properties) { + var cmapObj = toUnicode; + var charToUnicode = []; if (isName(cmapObj)) { - cmap = CMapFactory.create(cmapObj, - { url: PDFJS.cMapUrl, packed: PDFJS.cMapPacked }, null).getMap(); - return new ToUnicodeMap(cmap); + var isIdentityMap = cmapObj.name.substr(0, 9) == 'Identity-'; + if (!isIdentityMap) + error('ToUnicode file cmap translation not implemented'); } else if (isStream(cmapObj)) { - cmap = CMapFactory.create(cmapObj, - { url: PDFJS.cMapUrl, packed: PDFJS.cMapPacked }, null).getMap(); + var cmap = CMapFactory.create(cmapObj).map; // Convert UTF-16BE - // NOTE: cmap can be a sparse array, so use forEach instead of for(;;) - // to iterate over all keys. - cmap.forEach(function(token, i) { + for (var i in cmap) { + var token = cmap[i]; var str = []; for (var k = 0; k < token.length; k += 2) { var w1 = (token.charCodeAt(k) << 8) | token.charCodeAt(k + 1); @@ -11867,12 +15443,11 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { str.push(((w1 & 0x3ff) << 10) + (w2 & 0x3ff) + 0x10000); } cmap[i] = String.fromCharCode.apply(String, str); - }); - return new ToUnicodeMap(cmap); + } + return cmap; } - return null; + return charToUnicode; }, - readCidToGidMap: function PartialEvaluator_readCidToGidMap(cidToGidStream) { // Extract the encoding from the CIDToGIDMap var glyphsData = cidToGidStream.getBytes(); @@ -11881,107 +15456,98 @@ 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; - widths = dict.get('W'); + var widths = dict.get('W'); if (widths) { - for (i = 0, ii = widths.length; i < ii; i++) { - start = widths[i++]; - code = xref.fetchIfRef(widths[i]); + for (var i = 0, ii = widths.length; i < ii; i++) { + var start = widths[i++]; + var code = xref.fetchIfRef(widths[i]); if (isArray(code)) { - for (j = 0, jj = code.length; j < jj; j++) { + for (var j = 0, jj = code.length; j < jj; j++) glyphsWidths[start++] = code[j]; - } } else { var width = widths[++i]; - for (j = start; j <= code; j++) { + for (var 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 (i = 0, ii = vmetrics.length; i < ii; i++) { - start = vmetrics[i++]; - code = xref.fetchIfRef(vmetrics[i]); + for (var i = 0, ii = vmetrics.length; i < ii; i++) { + var start = vmetrics[i++]; + var code = xref.fetchIfRef(vmetrics[i]); if (isArray(code)) { - for (j = 0, jj = code.length; j < jj; j++) { + for (var 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 (j = start; j <= code; j++) { + for (var j = start; j <= code; j++) glyphsVMetrics[j] = vmetric; - } } } } } } else { var firstChar = properties.firstChar; - widths = dict.get('Widths'); + var widths = dict.get('Widths'); if (widths) { - j = firstChar; - for (i = 0, ii = widths.length; i < ii; i++) { + var j = firstChar; + for (var 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 = this.buildCharCodeToWidth(metrics.widths, - properties); + glyphsWidths = metrics.widths; defaultWidth = metrics.defaultWidth; } } } // Heuristic: detection of monospace font by checking all non-zero widths - var isMonospace = true; - var firstWidth = defaultWidth; + var isMonospace = true, 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; @@ -11990,17 +15556,17 @@ 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; - var widths = []; - var monospace = false; - var lookupName = (stdFontMap[name] || name); + var defaultWidth = 0, widths = [], monospace = false; + + var lookupName = stdFontMap[name] || name; if (!(lookupName in Metrics)) { // Use default fonts for looking up font metrics if the passed @@ -12027,113 +15593,44 @@ var PartialEvaluator = (function PartialEvaluatorClosure() { }; }, - 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) { + translateFont: function PartialEvaluator_translateFont(dict, + xref) { var baseDict = dict; var type = dict.get('Subtype'); - assert(isName(type), 'invalid font Subtype'); + assertWellFormed(isName(type), 'invalid font Subtype'); var composite = false; - var uint8array; - if (type.name === 'Type0') { + 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'); - assert(isName(type), 'invalid font Subtype'); + assertWellFormed(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 === 'Type3') { + if (type.name == '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(null); - descriptor.set('FontName', Name.get(type)); + descriptor = new Dict(); + descriptor.set('FontName', new Name(type.name)); } 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, '-'); @@ -12141,14 +15638,14 @@ 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); - properties = { - type: type, + var properties = { + type: type.name, name: baseFontName, widths: metrics.widths, defaultWidth: metrics.defaultWidth, @@ -12157,8 +15654,7 @@ 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); } } @@ -12168,52 +15664,47 @@ 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 PDFs have a string as the font name. + // Some bad pdf's have a string as the font name. if (isString(fontName)) { - fontName = Name.get(fontName); + fontName = new Name(fontName); } if (isString(baseFont)) { - baseFont = Name.get(baseFont); + baseFont = new Name(baseFont); } - if (type !== 'Type3') { + if (type.name !== '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; - assert(isName(fontName), 'invalid font name'); + assertWellFormed(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'); } } - properties = { - type: type, + var properties = { + type: type.name, name: fontName.name, subtype: subtype, file: fontFile, @@ -12223,9 +15714,9 @@ 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'), @@ -12240,133 +15731,204 @@ 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, - { url: PDFJS.cMapUrl, packed: PDFJS.cMapPacked }, null); - properties.vertical = properties.cMap.vertical; + properties.cmap = CMapFactory.create(cidEncoding); } - this.extractDataStructures(dict, baseDict, xref, properties); this.extractWidths(dict, xref, descriptor, properties); + this.extractDataStructures(dict, baseDict, xref, properties); - if (type === 'Type3') { - properties.isType3Font = true; + if (type.name === 'Type3') { + properties.coded = 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 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; - } - 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 + 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 - if (!arg.cached) { + 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; + break; + } } + return transfers; } - return transfers; - } - function OperatorList(intent, messageHandler, pageIndex) { + + function OperatorList(messageHandler, pageIndex) { this.messageHandler = messageHandler; - this.fnArray = []; + // 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.argsArray = []; - this.dependencies = {}; + this.dependencies = {}, this.pageIndex = pageIndex; - this.intent = intent; + this.fnIndex = 0; } OperatorList.prototype = { + get length() { return this.argsArray.length; }, addOp: function(fn, args) { - this.fnArray.push(fn); - this.argsArray.push(args); if (this.messageHandler) { - 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.fnArray[this.fnIndex++] = fn; + this.argsArray.push(args); + if (this.fnIndex >= CHUNK_SIZE) { this.flush(); } + } else { + this.fnArray.push(fn); + this.argsArray.push(args); } }, @@ -12400,9 +15962,7 @@ var OperatorList = (function OperatorListClosure() { }, flush: function(lastChunk) { - if (this.intent !== 'oplist') { - new QueueOptimizer().optimize(this); - } + PartialEvaluator.optimizeQueue(this); var transfers = getTransfers(this); this.messageHandler.send('RenderPageChunk', { operatorList: { @@ -12411,105 +15971,76 @@ var OperatorList = (function OperatorListClosure() { lastChunk: lastChunk, length: this.length }, - pageIndex: this.pageIndex, - intent: this.intent - }, transfers); - this.dependencies = {}; - this.fnArray.length = 0; - this.argsArray.length = 0; + pageIndex: this.pageIndex + }, null, transfers); + this.dependencies = []; + this.fnIndex = 0; + this.argsArray = []; } }; 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.font = null; - this.fontMatrix = FONT_IDENTITY_MATRIX; - this.textMatrix = IDENTITY_MATRIX.slice(); - this.textLineMatrix = IDENTITY_MATRIX.slice(); - this.charSpacing = 0; - this.wordSpacing = 0; + this.textMatrix = [1, 0, 0, 1, 0, 0]; + this.stateStack = []; + //textState variables 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; - }, - 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; + 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]; }, - 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]; + 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 + }; }, - 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() { @@ -12519,7 +16050,7 @@ var EvalState = (function EvalStateClosure() { return EvalState; })(); -var EvaluatorPreprocessor = (function EvaluatorPreprocessorClosure() { +var EvaluatorPreprocessor = (function EvaluatorPreprocessor() { // Specifies properties for each command // // If variableArgs === true: [0, `numArgs`] expected @@ -12579,7 +16110,7 @@ var EvaluatorPreprocessor = (function EvaluatorPreprocessorClosure() { 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 }, @@ -12613,7 +16144,7 @@ var EvaluatorPreprocessor = (function EvaluatorPreprocessorClosure() { 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 @@ -12633,121 +16164,101 @@ var EvaluatorPreprocessor = (function EvaluatorPreprocessorClosure() { 'null': null }; - function EvaluatorPreprocessor(stream, xref, stateManager) { + function EvaluatorPreprocessor(stream, xref) { // TODO(mduan): pass array of knownCommands rather than OP_MAP // dictionary this.parser = new Parser(new Lexer(stream, OP_MAP), false, xref); - this.stateManager = stateManager; - this.nonProcessedArgs = []; + this.ctm = new Float32Array([1, 0, 0, 1, 0, 0]); + this.savedStates = []; } - EvaluatorPreprocessor.prototype = { get savedStatesDepth() { - return this.stateManager.stateStack.length; + return this.savedStates.length; }, - - // |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; + read: function EvaluatorPreprocessor_read() { + var args = []; while (true) { var obj = this.parser.getObj(); - 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; - } - - 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 - } + if (isEOF(obj)) { + return null; // no more commands + } + if (!isCmd(obj)) { // argument - if (obj !== null) { - if (!args) { - args = []; - } - args.push((obj instanceof Dict ? obj.getAll() : obj)); - assert(args.length <= 33, 'Too many arguments'); + 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 = []; + continue; + } else if (args.length > opSpec.numArgs) { + info('Command ' + fn + ': expected ' + opSpec.numArgs + + ' args, but received ' + args.length + ' args'); } } + + // TODO figure out how to type-check vararg functions + + this.preprocessCommand(fn, args); + + return {fn: fn, args: args}; } }, - - preprocessCommand: - function EvaluatorPreprocessor_preprocessCommand(fn, args) { + getState: function EvaluatorPreprocessor_getState() { + return { + ctm: this.ctm + }; + }, + setState: function EvaluatorPreprocessor_setState(state) { + this.ctm = state.ctm; + }, + preprocessCommand: function EvaluatorPreprocessor_preprocessCommand(fn, + args) { switch (fn | 0) { case OPS.save: - this.stateManager.save(); + this.savedStates.push(this.getState()); break; case OPS.restore: - this.stateManager.restore(); + var previousState = this.savedStates.pop(); + if (previousState) { + this.setState(previousState); + } break; case OPS.transform: - this.stateManager.transform(args); + 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; break; } } @@ -12755,1352 +16266,11 @@ var EvaluatorPreprocessor = (function EvaluatorPreprocessorClosure() { 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 PRIVATE_USE_OFFSET_START = 0xE000; -var PRIVATE_USE_OFFSET_END = 0xF8FF; -var SKIP_PRIVATE_USE_RANGE_F000_TO_F01F = false; +var CMAP_GLYPH_OFFSET = 0xE000; +var GLYPH_AREA_SIZE = 0x1900; +var SYMBOLIC_FONT_GLYPH_OFFSET = 0xF000; // PDF Glyph Space Units are one Thousandth of a TextSpace Unit // except for Type 3 fonts @@ -14232,7 +16402,7 @@ var Encodings = { 'summation', 'product', 'pi', 'integral', 'ordfeminine', 'ordmasculine', 'Omega', 'ae', 'oslash', 'questiondown', 'exclamdown', 'logicalnot', 'radical', 'florin', 'approxequal', 'Delta', 'guillemotleft', - 'guillemotright', 'ellipsis', 'space', 'Agrave', 'Atilde', 'Otilde', 'OE', + 'guillemotright', 'ellipsis', '', 'Agrave', 'Atilde', 'Otilde', 'OE', 'oe', 'endash', 'emdash', 'quotedblleft', 'quotedblright', 'quoteleft', 'quoteright', 'divide', 'lozenge', 'ydieresis', 'Ydieresis', 'fraction', 'currency', 'guilsinglleft', 'guilsinglright', 'fi', 'fl', 'daggerdbl', @@ -14284,7 +16454,7 @@ var Encodings = { 'guilsinglleft', 'OE', 'bullet', 'Zcaron', 'bullet', 'bullet', 'quoteleft', 'quoteright', 'quotedblleft', 'quotedblright', 'bullet', 'endash', 'emdash', 'tilde', 'trademark', 'scaron', 'guilsinglright', 'oe', 'bullet', - 'zcaron', 'Ydieresis', 'space', 'exclamdown', 'cent', 'sterling', + 'zcaron', 'Ydieresis', '', 'exclamdown', 'cent', 'sterling', 'currency', 'yen', 'brokenbar', 'section', 'dieresis', 'copyright', 'ordfeminine', 'guillemotleft', 'logicalnot', 'hyphen', 'registered', 'macron', 'degree', 'plusminus', 'twosuperior', 'threesuperior', 'acute', @@ -14337,7 +16507,7 @@ 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', @@ -14348,19 +16518,19 @@ 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', '', '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'] + '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'] }; /** @@ -14446,7 +16616,7 @@ 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 = { @@ -14500,12 +16670,43 @@ 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': 45, + '10': 39, '11': 40, '12': 41, '13': 42, '14': 43, '15': 44, '16': 173, '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, @@ -14529,12 +16730,7 @@ 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, '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, + '168': 8710, '169': 171, '170': 187, '171': 8230, '210': 218, '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, @@ -14575,42 +16771,82 @@ var GlyphMapForStandardFonts = { '3316': 578, '3379': 42785, '3393': 1159, '3416': 8377 }; -// Some characters, e.g. copyrightserif, are mapped to the private use area and +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 // might not be displayed using standard fonts. Mapping/hacking well-known chars // to the similar equivalents in the normal characters range. -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); +function mapPrivateUseChars(code) { + switch (code) { + case 0xF8E9: // copyrightsans + case 0xF6D9: // copyrightserif + return 0x00A9; // copyright + default: + return code; } - return code; } var UnicodeRanges = [ @@ -14780,25 +17016,28 @@ 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 = { @@ -16184,16 +18423,31 @@ 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--) { + 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; +} + function adjustWidths(properties) { if (properties.fontMatrix[0] === FONT_IDENTITY_MATRIX[0]) { return; @@ -16207,254 +18461,6 @@ 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). @@ -16465,15 +18471,13 @@ var OpenTypeFileBuilder = (function OpenTypeFileBuilderClosure() { */ var Font = (function FontClosure() { function Font(name, file, properties) { - var charCode, glyphName, fontChar; this.name = name; this.loadedName = properties.loadedName; - this.isType3Font = properties.isType3Font; + this.coded = properties.coded; + this.loadCharProcs = properties.coded; this.sizes = []; - this.glyphCache = {}; - var names = name.split('+'); names = names.length > 1 ? names[1] : names[0]; names = names.split(/[-,_]/g)[0]; @@ -16482,35 +18486,29 @@ 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.cMap = properties.cMap; + this.hasEncoding = properties.hasEncoding; + this.cmap = properties.cmap; this.ascent = properties.ascent / PDF_GLYPH_SPACE_UNITS; this.descent = properties.descent / PDF_GLYPH_SPACE_UNITS; + this.fontMatrix = properties.fontMatrix; - - 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; + if (properties.type == 'Type3') { + this.encoding = properties.baseEncoding; return; } + // Trying to fix encoding using glyph CIDSystemInfo. + this.loadCidToUnicode(properties); this.cidEncoding = properties.cidEncoding; this.vertical = properties.vertical; if (this.vertical) { @@ -16518,30 +18516,33 @@ var Font = (function FontClosure() { this.defaultVMetrics = properties.defaultVMetrics; } - 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 + ')'); - } + if (properties.toUnicode && properties.toUnicode.length > 0) + this.toUnicode = properties.toUnicode; + else + this.rebuildToUnicode(properties); - this.missingFile = true; + this.toFontChar = this.buildToFontChar(this.toUnicode); + + if (!file) { // 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. @@ -16550,82 +18551,20 @@ 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 = 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.toUnicode = map; } 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 - 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') { + var subtype = properties.subtype; + if (subtype == 'Type1C' && (type != 'Type1' && type != 'MMType1')) + 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') { @@ -16634,14 +18573,11 @@ 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); @@ -16658,9 +18594,6 @@ 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: @@ -16669,7 +18602,6 @@ 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; @@ -16681,140 +18613,144 @@ var Font = (function FontClosure() { this.loading = true; } - Font.getFontID = (function () { - var ID = 1; - return function Font_getFontID() { - return String(ID++); - }; - })(); - - function int16(b0, b1) { - return (b0 << 8) + b1; + var numFonts = 0; + function getUniqueName() { + return 'pdfFont' + numFonts++; } - function int32(b0, b1, b2, b3) { - return (b0 << 24) + (b1 << 16) + (b2 << 8) + b3; + 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 string16(value) { - return String.fromCharCode((value >> 8) & 0xff, value & 0xff); + return String.fromCharCode((value >> 8) & 0xff) + + String.fromCharCode(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, value & 0xff); + value = value > 0x7FFF ? 0x7FFF : value < -0x8000 ? -0x8000 : value; + return String.fromCharCode((value >> 8) & 0xff) + + String.fromCharCode(value & 0xff); } - function isTrueTypeFile(file) { - var header = file.peekBytes(4); - return readUint32(header, 0) === 0x00010000; + function string32(value) { + return String.fromCharCode((value >> 24) & 0xff) + + String.fromCharCode((value >> 16) & 0xff) + + String.fromCharCode((value >> 8) & 0xff) + + String.fromCharCode(value & 0xff); } - /** - * 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++; + function createOpenTypeHeader(sfnt, file, numTables) { + // Windows hates the Mac TrueType sfnt version number + if (sfnt == 'true') + sfnt = string32(0x00010000); - if (SKIP_PRIVATE_USE_RANGE_F000_TO_F01F && fontCharCode === 0xF000) { - fontCharCode = 0xF020; - nextAvailableFontCharCode = fontCharCode + 1; - } + // sfnt version (4 bytes) + var header = sfnt; - } while (usedFontCharCodes[fontCharCode] !== undefined && - nextAvailableFontCharCode <= PRIVATE_USE_OFFSET_END); - } + // numTables (2 bytes) + header += string16(numTables); - newMap[fontCharCode] = glyphId; - toFontChar[originalCharCode] = fontCharCode; - usedFontCharCodes[fontCharCode] = true; - } - return { - toFontChar: toFontChar, - charCodeToGlyphId: newMap, - nextAvailableFontCharCode: nextAvailableFontCharCode - }; + // 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; } - function getRanges(glyphs) { + 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) { // Array.sort() sorts by characters, not numerically, so convert to an // array of characters. var codes = []; - for (var charCode in glyphs) { - codes.push({ fontCharCode: charCode | 0, glyphId: glyphs[charCode] }); - } + var length = glyphs.length; + for (var n = 0; n < length; ++n) + codes.push({ unicode: glyphs[n].unicode, code: n }); codes.sort(function fontGetRangesSort(a, b) { - return a.fontCharCode - b.fontCharCode; + return a.unicode - b.unicode; }); // Split the sorted codes into ranges. var ranges = []; - var length = codes.length; for (var n = 0; n < length; ) { - var start = codes[n].fontCharCode; - var codeIndices = [codes[n].glyphId]; + var start = codes[n].unicode; + var codeIndices = [deltas ? deltas[codes[n].code] : codes[n].code + 1]; ++n; var end = start; - while (n < length && end + 1 === codes[n].fontCharCode) { - codeIndices.push(codes[n].glyphId); + while (n < length && end + 1 == codes[n].unicode) { + codeIndices.push(deltas ? deltas[codes[n].code] : codes[n].code + 1); ++end; ++n; - if (end === 0xFFFF) { - break; - } + if (end === 0xFFFF) { break; } } ranges.push([start, end, codeIndices]); } @@ -16822,8 +18758,9 @@ var Font = (function FontClosure() { return ranges; } - function createCmapTable(glyphs) { - var ranges = getRanges(glyphs); + function createCmapTable(glyphs, deltas) { + var ranges = getRanges(glyphs, deltas); + var numTables = ranges[ranges.length - 1][1] > 0xFFFF ? 2 : 1; var cmap = '\x00\x00' + // version string16(numTables) + // numTables @@ -16831,8 +18768,7 @@ var Font = (function FontClosure() { '\x00\x01' + // encodingID string32(4 + numTables * 8); // start of the table record - var i, ii, j, jj; - for (i = ranges.length - 1; i >= 0; --i) { + for (var i = ranges.length - 1; i >= 0; --i) { if (ranges[i][0] <= 0xFFFF) { break; } } var bmpLength = i + 1; @@ -16842,7 +18778,10 @@ var Font = (function FontClosure() { } var trailingRangesCount = ranges[i][1] < 0xFFFF ? 1 : 0; var segCount = bmpLength + trailingRangesCount; - var searchParams = OpenTypeFileBuilder.getSearchParams(segCount, 2); + var segCount2 = segCount * 2; + var searchRange = getMaxPower2(segCount) * 2; + var searchEntry = Math.log(segCount) / Math.log(2); + var rangeShift = 2 * segCount - searchRange; // Fill up the 4 parallel arrays describing the segments. var startCount = ''; @@ -16852,16 +18791,15 @@ var Font = (function FontClosure() { var glyphsIds = ''; var bias = 0; - var range, start, end, codes; - for (i = 0, ii = bmpLength; i < ii; i++) { - range = ranges[i]; - start = range[0]; - end = range[1]; + for (var i = 0, ii = bmpLength; i < ii; i++) { + var range = ranges[i]; + var start = range[0]; + var end = range[1]; startCount += string16(start); endCount += string16(end); - codes = range[2]; + var codes = range[2]; var contiguous = true; - for (j = 1, jj = codes.length; j < jj; ++j) { + for (var j = 1, jj = codes.length; j < jj; ++j) { if (codes[j] !== codes[j - 1] + 1) { contiguous = false; break; @@ -16874,7 +18812,7 @@ var Font = (function FontClosure() { idDeltas += string16(0); idRangeOffsets += string16(offset); - for (j = 0, jj = codes.length; j < jj; ++j) { + for (var j = 0, jj = codes.length; j < jj; ++j) { glyphsIds += string16(codes[j]); } } else { @@ -16893,10 +18831,10 @@ var Font = (function FontClosure() { } var format314 = '\x00\x00' + // language - string16(2 * segCount) + - string16(searchParams.range) + - string16(searchParams.entry) + - string16(searchParams.rangeShift) + + string16(segCount2) + + string16(searchRange) + + string16(searchEntry) + + string16(rangeShift) + endCount + '\x00\x00' + startCount + idDeltas + idRangeOffsets + glyphsIds; @@ -16908,14 +18846,14 @@ var Font = (function FontClosure() { string32(4 + numTables * 8 + 4 + format314.length); // start of the table record format31012 = ''; - for (i = 0, ii = ranges.length; i < ii; i++) { - range = ranges[i]; - start = range[0]; - codes = range[2]; + for (var i = 0, ii = ranges.length; i < ii; i++) { + var range = ranges[i]; + var start = range[0]; + var codes = range[2]; var code = codes[0]; - for (j = 1, jj = codes.length; j < jj; ++j) { + for (var j = 1, jj = codes.length; j < jj; ++j) { if (codes[j] !== codes[j - 1] + 1) { - end = range[0] + j - 1; + var end = range[0] + j - 1; format31012 += string32(start) + // startCharCode string32(end) + // endCharCode string32(code); // startGlyphID @@ -16934,28 +18872,29 @@ var Font = (function FontClosure() { string32(format31012.length / 12); // nGroups } - return cmap + '\x00\x04' + // format - string16(format314.length + 4) + // length - format314 + header31012 + format31012; + return stringToArray(cmap + + '\x00\x04' + // format + string16(format314.length + 4) + // length + format314 + header31012 + format31012); } function validateOS2Table(os2) { var stream = new Stream(os2.data); - var version = stream.getUint16(); + var version = int16(stream.getBytes(2)); // 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 = stream.getUint16(); + var selection = int16(stream.getBytes(2)); if (version < 4 && (selection & 0x0300)) { return false; } - var firstChar = stream.getUint16(); - var lastChar = stream.getUint16(); + var firstChar = int16(stream.getBytes(2)); + var lastChar = int16(stream.getBytes(2)); if (firstChar > lastChar) { return false; } stream.getBytes(6); // skipping sTypoAscender/Descender/LineGap - var usWinAscent = stream.getUint16(); + var usWinAscent = int16(stream.getBytes(2)); if (usWinAscent === 0) { // makes font unreadable by windows return false; } @@ -16983,14 +18922,12 @@ var Font = (function FontClosure() { var lastCharIndex = 0; if (charstrings) { - for (var code in charstrings) { - code |= 0; - if (firstCharIndex > code || !firstCharIndex) { + for (var i = 0; i < charstrings.length; ++i) { + var code = charstrings[i].unicode; + if (firstCharIndex > code || !firstCharIndex) firstCharIndex = code; - } - if (lastCharIndex < code) { + if (lastCharIndex < code) lastCharIndex = code; - } var position = getUnicodeRangeFor(code); if (position < 32) { @@ -17012,18 +18949,18 @@ 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 } @@ -17074,15 +19011,15 @@ 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) { @@ -17106,15 +19043,13 @@ 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 = []; - var i, ii, j, jj, str; - for (i = 0, ii = strings.length; i < ii; i++) { - str = proto[1][i] || strings[i]; + for (var i = 0, ii = strings.length; i < ii; i++) { + var str = proto[1][i] || strings[i]; - var strBufUnicode = []; - for (j = 0, jj = str.length; j < jj; j++) { - strBufUnicode.push(string16(str.charCodeAt(j))); - } - stringsUnicode.push(strBufUnicode.join('')); + var strUnicode = ''; + for (var j = 0, jj = str.length; j < jj; j++) + strUnicode += string16(str.charCodeAt(j)); + stringsUnicode.push(strUnicode); } var names = [strings, stringsUnicode]; @@ -17130,10 +19065,10 @@ var Font = (function FontClosure() { // Build the name records field var strOffset = 0; - for (i = 0, ii = platforms.length; i < ii; i++) { + for (var i = 0, ii = platforms.length; i < ii; i++) { var strs = names[i]; - for (j = 0, jj = strs.length; j < jj; j++) { - str = strs[j]; + for (var j = 0, jj = strs.length; j < jj; j++) { + var str = strs[j]; var nameRecord = platforms[i] + // platform ID encodings[i] + // encoding ID @@ -17150,6 +19085,37 @@ 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, @@ -17163,20 +19129,23 @@ 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 = bytesToString(file.getBytes(4)); + var tag = file.getBytes(4); + tag = String.fromCharCode(tag[0]) + + String.fromCharCode(tag[1]) + + String.fromCharCode(tag[2]) + + String.fromCharCode(tag[3]); - var checksum = file.getInt32(); - var offset = file.getInt32() >>> 0; - var length = file.getInt32() >>> 0; + var checksum = int32(file.getBytes(4)); + var offset = int32(file.getBytes(4)); + var length = int32(file.getBytes(4)); // Read the table associated data var previousPosition = file.pos; @@ -17185,7 +19154,7 @@ 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 @@ -17202,57 +19171,116 @@ var Font = (function FontClosure() { function readOpenTypeHeader(ttf) { return { - version: bytesToString(ttf.getBytes(4)), - numTables: ttf.getUint16(), - searchRange: ttf.getUint16(), - entrySelector: ttf.getUint16(), - rangeShift: ttf.getUint16() + 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)) }; } + 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, isSymbolicFont) { - var segment; + function readCmapTable(cmap, font, hasEncoding, isSymbolicFont) { var start = (font.start ? font.start : 0) + cmap.offset; font.pos = start; - var version = font.getUint16(); - var numTables = font.getUint16(); + var version = int16(font.getBytes(2)); + var numTables = int16(font.getBytes(2)); var potentialTable; - 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. + 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. for (var i = 0; i < numTables; i++) { - var platformId = font.getUint16(); - var encodingId = font.getUint16(); - var offset = font.getInt32() >>> 0; + var platformId = int16(font.getBytes(2)); + var encodingId = int16(font.getBytes(2)); + var offset = int32(font.getBytes(4)); var useTable = false; + var canBreak = false; - 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) { + // 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) { useTable = true; canBreak = true; - } else if (isSymbolicFont && platformId === 3 && encodingId === 0) { + foundPreferredTable = true; + } else if (hasEncoding && platformId === 3 && encodingId === 1) { 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 + offset: offset, + isSymbolicFont: isSymbolicFont }; } if (canBreak) { @@ -17261,33 +19289,35 @@ var Font = (function FontClosure() { } if (!potentialTable) { - warn('Could not find a preferred cmap table.'); - return { - platformId: -1, - encodingId: -1, - mappings: [], - hasShortCmap: false - }; + 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; } font.pos = start + potentialTable.offset; - var format = font.getUint16(); - var length = font.getUint16(); - var language = font.getUint16(); + var format = int16(font.getBytes(2)); + var length = int16(font.getBytes(2)); + var language = int16(font.getBytes(2)); var hasShortCmap = false; var mappings = []; - var j, glyphId; // TODO(mack): refactor this cmap subtable reading logic out if (format === 0) { - for (j = 0; j < 256; j++) { + for (var j = 0; j < 256; j++) { var index = font.getByte(); if (!index) { continue; } mappings.push({ - charCode: j, + charcode: j, glyphId: index }); } @@ -17295,25 +19325,25 @@ var Font = (function FontClosure() { } else if (format === 4) { // re-creating the table in format 4 since the encoding // might be changed - var segCount = (font.getUint16() >> 1); + var segCount = (int16(font.getBytes(2)) >> 1); font.getBytes(6); // skipping range fields var segIndex, segments = []; for (segIndex = 0; segIndex < segCount; segIndex++) { - segments.push({ end: font.getUint16() }); + segments.push({ end: int16(font.getBytes(2)) }); } - font.getUint16(); + font.getBytes(2); for (segIndex = 0; segIndex < segCount; segIndex++) { - segments[segIndex].start = font.getUint16(); + segments[segIndex].start = int16(font.getBytes(2)); } for (segIndex = 0; segIndex < segCount; segIndex++) { - segments[segIndex].delta = font.getUint16(); + segments[segIndex].delta = int16(font.getBytes(2)); } var offsetsCount = 0; for (segIndex = 0; segIndex < segCount; segIndex++) { - segment = segments[segIndex]; - var rangeOffset = font.getUint16(); + var segment = segments[segIndex]; + var rangeOffset = int16(font.getBytes(2)); if (!rangeOffset) { segment.offsetIndex = -1; continue; @@ -17322,53 +19352,53 @@ 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 (j = 0; j < offsetsCount; j++) { - offsets.push(font.getUint16()); + for (var j = 0; j < offsetsCount; j++) { + offsets.push(int16(font.getBytes(2))); } for (segIndex = 0; segIndex < segCount; segIndex++) { - segment = segments[segIndex]; - start = segment.start; - var end = segment.end; - var delta = segment.delta; - offsetIndex = segment.offsetIndex; + var segment = segments[segIndex]; + var start = segment.start, end = segment.end; + var delta = segment.delta, offsetIndex = segment.offsetIndex; - for (j = start; j <= end; j++) { - if (j === 0xFFFF) { + for (var j = start; j <= end; j++) { + if (j == 0xFFFF) { continue; } - glyphId = (offsetIndex < 0 ? - j : offsets[offsetIndex + j - start]); + var 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 = font.getUint16(); - var entryCount = font.getUint16(); + var firstCode = int16(font.getBytes(2)); + var entryCount = int16(font.getBytes(2)); - for (j = 0; j < entryCount; j++) { - glyphId = font.getUint16(); - var charCode = firstCode + j; + var glyphs = []; + var ids = []; + for (var j = 0; j < entryCount; j++) { + var glyphId = int16(font.getBytes(2)); + var charcode = firstCode + j; mappings.push({ - charCode: charCode, + charcode: charcode, glyphId: glyphId }); } @@ -17378,10 +19408,10 @@ var Font = (function FontClosure() { // removing duplicate entries mappings.sort(function (a, b) { - return a.charCode - b.charCode; + return a.charcode - b.charcode; }); - for (i = 1; i < mappings.length; i++) { - if (mappings[i - 1].charCode === mappings[i].charCode) { + for (var i = 1; i < mappings.length; i++) { + if (mappings[i - 1].charcode === mappings[i].charcode) { mappings.splice(i, 1); i--; } @@ -17390,6 +19420,7 @@ var Font = (function FontClosure() { return { platformId: potentialTable.platformId, encodingId: potentialTable.encodingId, + isSymbolicFont: potentialTable.isSymbolicFont, mappings: mappings, hasShortCmap: hasShortCmap }; @@ -17405,7 +19436,7 @@ var Font = (function FontClosure() { font.pos = (font.start ? font.start : 0) + header.offset; font.pos += header.length - 2; - var numOfMetrics = font.getUint16(); + var numOfMetrics = int16(font.getBytes(2)); if (numOfMetrics > numGlyphs) { info('The numOfMetrics (' + numOfMetrics + ') should not be ' + @@ -17421,12 +19452,13 @@ var Font = (function FontClosure() { ((metrics.length - numOfMetrics * 4) >> 1); if (numMissing > 0) { - // 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; + 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); } } @@ -17444,8 +19476,8 @@ var Font = (function FontClosure() { return glyf.length; } - var i, j = 10, flagsCount = 0; - for (i = 0; i < contoursCount; i++) { + var j = 10, flagsCount = 0; + for (var i = 0; i < contoursCount; i++) { var endPoint = (glyf[j] << 8) | glyf[j + 1]; flagsCount = endPoint + 1; j += 2; @@ -17457,7 +19489,7 @@ var Font = (function FontClosure() { var instructionsEnd = j; // validating flags var coordinatesLength = 0; - for (i = 0; i < flagsCount; i++) { + for (var i = 0; i < flagsCount; i++) { var flag = glyf[j++]; if (flag & 0xC0) { // reserved flags must be zero, cleaning up @@ -17508,7 +19540,7 @@ 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; @@ -17517,7 +19549,7 @@ 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); @@ -17588,15 +19620,8 @@ var Font = (function FontClosure() { var startOffset = itemDecode(locaData, 0); var writeOffset = 0; itemEncode(locaData, 0, writeOffset); - var i, j; - for (i = 0, j = itemSize; i < numGlyphs; i++, j += itemSize) { + for (var 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); @@ -17616,9 +19641,8 @@ 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 (i = 0, j = itemSize; i < numGlyphs; i++, j += itemSize) { + for (var i = 0, j = itemSize; i < numGlyphs; i++, j += itemSize) itemEncode(locaData, j, simpleGlyph.length); - } glyf.data = simpleGlyph; return; } @@ -17644,27 +19668,25 @@ var Font = (function FontClosure() { font.pos = start; var length = post.length, end = start + length; - var version = font.getInt32(); + var version = int32(font.getBytes(4)); // 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 = font.getUint16(); - if (numGlyphs !== maxpNumGlyphs) { + var numGlyphs = int16(font.getBytes(2)); + if (numGlyphs != maxpNumGlyphs) { valid = false; break; } var glyphNameIndexes = []; - for (i = 0; i < numGlyphs; ++i) { - var index = font.getUint16(); + for (var i = 0; i < numGlyphs; ++i) { + var index = int16(font.getBytes(2)); if (index >= 32768) { valid = false; break; @@ -17675,17 +19697,16 @@ var Font = (function FontClosure() { break; } var customNames = []; - var strBuf = []; while (font.pos < end) { var stringLength = font.getByte(); - strBuf.length = stringLength; - for (i = 0; i < stringLength; ++i) { - strBuf[i] = String.fromCharCode(font.getByte()); + var string = ''; + for (var i = 0; i < stringLength; ++i) { + string += String.fromCharCode(font.getByte()); } - customNames.push(strBuf.join('')); + customNames.push(string); } glyphNames = []; - for (i = 0; i < numGlyphs; ++i) { + for (var i = 0; i < numGlyphs; ++i) { var j = glyphNameIndexes[i]; if (j < 258) { glyphNames.push(MacStandardGlyphOrdering[j]); @@ -17711,35 +19732,33 @@ var Font = (function FontClosure() { var names = [[], []]; var length = nameTable.length, end = start + length; - var format = font.getUint16(); + var format = int16(font.getBytes(2)); 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 = font.getUint16(); - var stringsStart = font.getUint16(); + var numRecords = int16(font.getBytes(2)); + var stringsStart = int16(font.getBytes(2)); var records = []; var NAME_RECORD_LENGTH = 12; - var i, ii; - - for (i = 0; i < numRecords && + for (var i = 0; i < numRecords && font.pos + NAME_RECORD_LENGTH <= end; i++) { var r = { - platform: font.getUint16(), - encoding: font.getUint16(), - language: font.getUint16(), - name: font.getUint16(), - length: font.getUint16(), - offset: font.getUint16() + 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)) }; // 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 (i = 0, ii = records.length; i < ii; i++) { + for (var i = 0, ii = records.length; i < ii; i++) { var record = records[i]; var pos = start + stringsStart + record.offset; if (pos + record.length > end) { @@ -17747,11 +19766,12 @@ 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(font.getUint16()); + str += String.fromCharCode(int16(font.getBytes(2))); } names[1][nameIndex] = str; } else { @@ -17775,7 +19795,7 @@ var Font = (function FontClosure() { function sanitizeTTProgram(table, ttContext) { var data = table.data; - var i = 0, j, n, b, funcId, pc, lastEndf = 0, lastDeff = 0; + var i = 0, n, lastEndf = 0, lastDeff = 0; var stack = []; var callstack = []; var functionsCalled = []; @@ -17791,7 +19811,7 @@ var Font = (function FontClosure() { if (inFDEF || inELSE) { i += n; } else { - for (j = 0; j < n; j++) { + for (var j = 0; j < n; j++) { stack.push(data[i++]); } } @@ -17800,8 +19820,8 @@ var Font = (function FontClosure() { if (inFDEF || inELSE) { i += n * 2; } else { - for (j = 0; j < n; j++) { - b = data[i++]; + for (var j = 0; j < n; j++) { + var b = data[i++]; stack.push((b << 8) | data[i++]); } } @@ -17810,7 +19830,7 @@ var Font = (function FontClosure() { if (inFDEF || inELSE) { i += n; } else { - for (j = 0; j < n; j++) { + for (var j = 0; j < n; j++) { stack.push(data[i++]); } } @@ -17819,15 +19839,15 @@ var Font = (function FontClosure() { if (inFDEF || inELSE) { i += n * 2; } else { - for (j = 0; j < n; j++) { - b = data[i++]; + for (var j = 0; j < n; j++) { + var 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 - funcId = stack[stack.length - 1]; + var funcId = stack[stack.length - 1]; ttContext.functionsUsed[funcId] = true; if (funcId in ttContext.functionsStackDeltas) { stack.length += ttContext.functionsStackDeltas[funcId]; @@ -17835,7 +19855,7 @@ var Font = (function FontClosure() { functionsCalled.indexOf(funcId) < 0) { callstack.push({data: data, i: i, stackTop: stack.length - 1}); functionsCalled.push(funcId); - pc = ttContext.functionsDefined[funcId]; + var pc = ttContext.functionsDefined[funcId]; if (!pc) { warn('TT: CALL non-existent function'); ttContext.hintsValid = false; @@ -17853,20 +19873,20 @@ var Font = (function FontClosure() { inFDEF = true; // collecting inforamtion about which functions are defined lastDeff = i; - funcId = stack.pop(); + var 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 { - pc = callstack.pop(); + var pc = callstack.pop(); if (!pc) { warn('TT: ENDF bad stack'); ttContext.hintsValid = false; return; } - funcId = functionsCalled.pop(); + var funcId = functionsCalled.pop(); data = pc.data; i = pc.i; ttContext.functionsStackDeltas[funcId] = @@ -17890,13 +19910,9 @@ var Font = (function FontClosure() { } --ifLevel; } else if (op === 0x1C) { // JMPR - if (!inFDEF && !inELSE) { - var offset = stack[stack.length - 1]; - // only jumping forward to prevent infinite loop - if (offset > 0) { - i += offset - 1; - } - } + 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) { @@ -17936,11 +19952,6 @@ 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); @@ -17959,14 +19970,13 @@ var Font = (function FontClosure() { if (content.length > 1) { // concatenating the content items var newLength = 0; - var j, jj; - for (j = 0, jj = content.length; j < jj; j++) { + for (var 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 (j = 0, jj = content.length; j < jj; j++) { + for (var j = 0, jj = content.length; j < jj; j++) { result.set(content[j], pos); pos += content[j].length; } @@ -18008,13 +20018,11 @@ 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 }; - var table; + hmtx: null, maxp: null, name: null, post: null}; for (var i = 0; i < numTables; i++) { - table = readTableEntry(font); + var table = readTableEntry(font); if (VALID_TABLES.indexOf(table.tag) < 0) { continue; // skipping table if it's not a required or optional table } @@ -18029,8 +20037,8 @@ var Font = (function FontClosure() { // OpenType font if (!tables.head || !tables.hhea || !tables.maxp || !tables.post) { // no major tables: throwing everything at CFFFont - cffFile = new Stream(tables['CFF '].data); - cff = new CFFFont(cffFile, properties); + var cffFile = new Stream(tables['CFF '].data); + var cff = new CFFFont(cffFile, properties); return this.convert(name, cff, properties); } @@ -18040,12 +20048,10 @@ 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) { @@ -18053,24 +20059,24 @@ var Font = (function FontClosure() { } font.pos = (font.start || 0) + tables.maxp.offset; - var version = font.getInt32(); - var numGlyphs = font.getUint16(); + var version = int32(font.getBytes(4)); + var numGlyphs = int16(font.getBytes(2)); var maxFunctionDefs = 0; if (version >= 0x00010000 && tables.maxp.length >= 22) { // maxZones can be invalid font.pos += 8; - var maxZones = font.getUint16(); + var maxZones = int16(font.getBytes(2)); 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 = font.getUint16(); + maxFunctionDefs = int16(font.getBytes(2)); } var dupFirstEntry = false; - if (properties.type === 'CIDFontType2' && properties.toUnicode && - properties.toUnicode.get(0) > '\u0000') { + if (properties.type == 'CIDFontType2' && properties.toUnicode && + properties.toUnicode[0] > '\u0000') { // oracle's defect (see 3427), duplicating first entry dupFirstEntry = true; numGlyphs++; @@ -18086,6 +20092,24 @@ 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); @@ -18097,8 +20121,8 @@ 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); } @@ -18122,142 +20146,244 @@ var Font = (function FontClosure() { } } - var charCodeToGlyphId = [], charCode; - if (properties.type === 'CIDFontType2') { + 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 cidToGidMap = properties.cidToGidMap || []; - 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]; + 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; } - if (glyphId >= 0 && glyphId < numGlyphs) { - charCodeToGlyphId[charCode] = glyphId; + // 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 (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. - var cmapTable = readCmapTable(tables.cmap, font, this.isSymbolicFont); + + // 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 cmapPlatformId = cmapTable.platformId; var cmapEncodingId = cmapTable.encodingId; var cmapMappings = cmapTable.mappings; var cmapMappingsLength = cmapMappings.length; - var hasEncoding = properties.differences.length || - !!properties.baseEncodingName; + 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); - // 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]; + if (!unicode) { + // TODO(mack): gotta check if skipping mappings where we cannot find + // a unicode is the correct behaviour + continue; } - 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; - } - 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); - } + glyphs.push({ + code: charcode, + unicode: unicode + }); + ids.push(cmapMapping.glyphId); + } - var found = false; - for (i = 0; i < cmapMappingsLength; ++i) { - if (cmapMappings[i].charCode === unicodeOrCharCode) { - charCodeToGlyphId[charCode] = cmapMappings[i].glyphId; - found = true; - break; - } - } - 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; + 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)) { + 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]; + } + + // Finally, any undefined entries in the table shall be filled + // using StandardEncoding + if (!glyphName) { + glyphName = Encodings.StandardEncoding[charcode]; + } + + // 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; + } + } + this.toFontChar = toFontChar = newToFontChar; + + createGlyphNameMap(glyphs, ids, properties); + this.glyphNameMap = properties.glyphNameMap; } - if (charCodeToGlyphId.length === 0) { + if (glyphs.length === 0) { // defines at least one glyph - charCodeToGlyphId[0] = 0; + glyphs.push({ unicode: 0xF000, code: 0xF000, glyph: '.notdef' }); + ids.push(0); } // Converting glyphs and ids into font's cmap table - var newMapping = adjustMapping(charCodeToGlyphId, properties); - this.toFontChar = newMapping.toFontChar; - tables.cmap = { - tag: 'cmap', - data: createCmapTable(newMapping.charCodeToGlyphId) - }; + 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; 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: createOS2Table(properties, newMapping.charCodeToGlyphId, - override) + data: stringToArray(createOS2Table(properties, glyphs, override)) }; } @@ -18265,16 +20391,16 @@ var Font = (function FontClosure() { if (!tables.post) { tables.post = { tag: 'post', - data: createPostTable(properties) + data: stringToArray(createPostTable(properties)) }; } if (!isTrueType) { try { // Trying to repair CFF file - cffFile = new Stream(tables['CFF '].data); + var cffFile = new Stream(tables['CFF '].data); var parser = new CFFParser(cffFile, properties); - cff = parser.parse(); + var cff = parser.parse(); var compiler = new CFFCompiler(cff); tables['CFF '].data = compiler.compile(); } catch (e) { @@ -18286,304 +20412,330 @@ var Font = (function FontClosure() { if (!tables.name) { tables.name = { tag: 'name', - data: createNameTable(this.name) + data: stringToArray(createNameTable(this.name)) }; } else { // ... using existing 'name' table as prototype var namePrototype = readNameTable(tables.name); - tables.name.data = createNameTable(name, namePrototype); + tables.name.data = stringToArray(createNameTable(name, namePrototype)); } - var builder = new OpenTypeFileBuilder(header.version); - for (var tableTag in tables) { - builder.addTable(tableTag, tables[tableTag].data); + // 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); } - return builder.toArray(); + + // 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); }, convert: function Font_convert(fontName, font, properties) { - // 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); - } + function isFixedPitch(glyphs) { + for (var i = 0, ii = glyphs.length - 1; i < ii; i++) { + if (glyphs[i] != glyphs[i + 1]) + return false; } - return charCodes; + return true; } - function createCharCode(charCodeToGlyphId, glyphId) { - for (var charCode in charCodeToGlyphId) { - if (glyphId === charCodeToGlyphId[charCode]) { - return charCode | 0; - } - } - newMapping.charCodeToGlyphId[newMapping.nextAvailableFontCharCode] = - glyphId; - return newMapping.nextAvailableFontCharCode++; + // 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; } + this.glyphNameMap = glyphNameMap; var seacs = font.seacs; - if (SEAC_ANALYSIS_ENABLED && seacs && seacs.length) { + if (SEAC_ANALYSIS_ENABLED && seacs) { + var seacMap = []; var matrix = properties.fontMatrix || FONT_IDENTITY_MATRIX; - var charset = font.getCharset(); - var seacMap = Object.create(null); - for (var glyphId in seacs) { - glyphId |= 0; - var seac = seacs[glyphId]; + for (var i = 0; i < charstrings.length; ++i) { + var charstring = charstrings[i]; + var seac = seacs[charstring.gid]; + if (!seac) { + continue; + } var baseGlyphName = Encodings.StandardEncoding[seac[2]]; + var baseUnicode = glyphNameMap[baseGlyphName]; var accentGlyphName = Encodings.StandardEncoding[seac[3]]; - var baseGlyphId = charset.indexOf(baseGlyphName); - var accentGlyphId = charset.indexOf(accentGlyphName); - if (baseGlyphId < 0 || accentGlyphId < 0) { + var accentUnicode = glyphNameMap[accentGlyphName]; + if (!baseUnicode || !accentUnicode) { 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] }; - - 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 - }; - } + seacMap[charstring.unicode] = { + baseUnicode: baseUnicode, + accentUnicode: accentUnicode, + 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 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 + var fields = { + // PostScript Font Program + 'CFF ': font.data, - // 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 + // OS/2 and Windows Specific metrics + 'OS/2': stringToArray(createOS2Table(properties, charstrings)), - // Horizontal metrics - builder.addTable('hmtx', (function fontFieldsHmtx() { - var charstrings = font.charstrings; - var cffWidths = font.cff ? font.cff.widths : null; + // 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() { var hmtx = '\x00\x00\x00\x00'; // Fake .notdef - 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); - } + for (var i = 0, ii = charstrings.length; i < ii; i++) { + var charstring = charstrings[i]; + var width = 'width' in charstring ? charstring.width : 0; hmtx += string16(width) + string16(0); } - return hmtx; - })()); + return stringToArray(hmtx); + })(), - // Maximum profile - builder.addTable('maxp', - '\x00\x00\x50\x00' + // Version number - string16(numGlyphs)); // Num of glyphs + // Maximum profile + 'maxp': (function fontFieldsMaxp() { + return stringToArray( + '\x00\x00\x50\x00' + // Version number + string16(charstrings.length + 1)); // Num of glyphs + })(), - // Naming tables - builder.addTable('name', createNameTable(fontName)); + // Naming tables + 'name': stringToArray(createNameTable(fontName)), - // PostScript informations - builder.addTable('post', createPostTable(properties)); + // PostScript informations + 'post': stringToArray(createPostTable(properties)) + }; - return builder.toArray(); + 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); }, - /** - * 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; - } - // 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]; - } - 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; - } - 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; - } - } - toUnicode[charcode] = String.fromCharCode(code); - } - continue; + 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); } - toUnicode[charcode] = String.fromCharCode(GlyphsUnicode[glyphName]); + result[i] = fontCharCode; } - 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); + 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]; + } + } 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 } - // The viewer's choice, just use an identity map. - return new IdentityToUnicodeMap(properties.firstChar, - properties.lastChar); + 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; + } + } + 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; + } + cid++; + k++; + } + } else + cid += unicode.s; + } else if (unicode) { + cidToUnicodeMap[cid] = unicode; + if (!unicodeToCIDMap[unicode] || overwrite) { + unicodeToCIDMap[unicode] = cid; + } + cid++; + } else + cid++; + } + + 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 = []; + } }, get spaceWidth() { @@ -18604,24 +20756,18 @@ var Font = (function FontClosure() { var glyphUnicode = GlyphsUnicode[glyphName]; // finding the charcode via unicodeToCID map var charcode = 0; - if (this.composite) { - if (this.cMap.contains(glyphUnicode)) { - charcode = this.cMap.lookup(glyphUnicode); - } - } + if (this.composite) + charcode = this.unicodeToCID[glyphUnicode]; // ... via toUnicode map - if (!charcode && 'toUnicode' in this) { - charcode = this.toUnicode.charCodeOf(glyphUnicode); - } + if (!charcode && 'toUnicode' in this) + charcode = this.toUnicode.indexOf(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: @@ -18631,87 +20777,153 @@ var Font = (function FontClosure() { }, charToGlyph: function Font_charToGlyph(charcode) { - var fontCharCode, width, operatorListId; + var fontCharCode, width, operatorList, disabled; - var widthCode = charcode; - if (this.cMap && this.cMap.contains(charcode)) { - widthCode = this.cMap.lookup(charcode); + 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; } - width = this.widths[widthCode]; + + var unicodeChars = !('toUnicode' in this) ? charcode : + this.toUnicode[charcode] || charcode; + if (typeof unicodeChars === 'number') { + unicodeChars = String.fromCharCode(unicodeChars); + } + width = isNum(width) ? width : this.defaultWidth; - 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; - } + disabled = this.unicodeIsEnabled ? + !this.unicodeIsEnabled[fontCharCode] : false; var accent = null; - if (this.seacMap && this.seacMap[charcode]) { - var seac = this.seacMap[charcode]; - fontCharCode = seac.baseFontCharCode; + if (this.seacMap && this.seacMap[fontCharCode]) { + var seac = this.seacMap[fontCharCode]; + fontCharCode = seac.baseUnicode; accent = { - fontChar: String.fromCharCode(seac.accentFontCharCode), + fontChar: String.fromCharCode(seac.accentUnicode), offset: seac.accentOffset }; } - 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; + return { + fontChar: String.fromCharCode(fontCharCode), + unicode: unicodeChars, + accent: accent, + width: width, + vmetric: vmetric, + disabled: disabled, + operatorList: operatorList + }; }, charsToGlyphs: function Font_charsToGlyphs(chars) { var charsCache = this.charsCache; - var glyphs, glyph, charcode; + var glyphs; // 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; - if (this.cMap) { + 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; // composite fonts have multi-byte strings convert the string from // single-byte to multi-byte - var c = {}; while (i < chars.length) { - this.cMap.readCharCode(chars, i, c); - charcode = c.charcode; - var length = c.length; + var c = this.cmap.readCharCode(chars, i); + var charcode = c[0]; + var length = c[1]; i += length; - glyph = this.charToGlyph(charcode); + var glyph = this.charToGlyph(charcode); glyphs.push(glyph); // placing null after each word break charcode (ASCII SPACE) // Ignore occurences of 0x20 in multiple-byte codes. @@ -18719,14 +20931,14 @@ var Font = (function FontClosure() { glyphs.push(null); } } - } else { - for (i = 0, ii = chars.length; i < ii; ++i) { - charcode = chars.charCodeAt(i); - glyph = this.charToGlyph(charcode); + } + else { + for (var i = 0, ii = chars.length; i < ii; ++i) { + var charcode = chars.charCodeAt(i); + var glyph = this.charToGlyph(charcode); glyphs.push(glyph); - if (charcode === 0x20) { + if (charcode == 0x20) glyphs.push(null); - } } } @@ -18741,8 +20953,6 @@ var Font = (function FontClosure() { var ErrorFont = (function ErrorFontClosure() { function ErrorFont(error) { this.error = error; - this.loadedName = 'g_font_error'; - this.loading = false; } ErrorFont.prototype = { @@ -18757,61 +20967,6 @@ 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. @@ -18881,7 +21036,6 @@ 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) { @@ -18939,7 +21093,7 @@ var Type1CharString = (function Type1CharStringClosure() { error = true; break; } - subrNumber = this.stack.pop(); + var subrNumber = this.stack.pop(); error = this.convert(subrs[subrNumber], subrs); break; case 11: // return @@ -18951,12 +21105,12 @@ 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. - wx = this.stack.pop(); - sbx = this.stack.pop(); + var wx = this.stack.pop(); + var sbx = this.stack.pop(); this.lsb = sbx; this.width = wx; - this.stack.push(wx, sbx); - error = this.executeCommand(2, COMMAND_MAP.hmoveto); + this.stack.push(sbx); + error = this.executeCommand(1, COMMAND_MAP.hmoveto); break; case 14: // endchar this.output.push(COMMAND_MAP.endchar[0]); @@ -19025,13 +21179,13 @@ 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(); - wx = this.stack.pop(); + var wx = this.stack.pop(); var sby = this.stack.pop(); - sbx = this.stack.pop(); + var sbx = this.stack.pop(); this.lsb = sbx; this.width = wx; - this.stack.push(wx, sbx, sby); - error = this.executeCommand(3, COMMAND_MAP.rmoveto); + this.stack.push(sbx, sby); + error = this.executeCommand(2, COMMAND_MAP.rmoveto); break; case (12 << 8) + 12: // div if (this.stack.length < 2) { @@ -19047,7 +21201,7 @@ var Type1CharString = (function Type1CharStringClosure() { error = true; break; } - subrNumber = this.stack.pop(); + var subrNumber = this.stack.pop(); var numArgs = this.stack.pop(); if (subrNumber === 0 && numArgs === 3) { var flexArgs = this.stack.splice(this.stack.length - 17, 17); @@ -19128,7 +21282,7 @@ var Type1CharString = (function Type1CharStringClosure() { if (keepStack) { this.stack.splice(start, howManyArgs); } else { - this.stack.length = 0; + this.stack = []; } return false; } @@ -19154,46 +21308,18 @@ var Type1Parser = (function Type1ParserClosure() { var EEXEC_ENCRYPT_KEY = 55665; var CHAR_STRS_ENCRYPT_KEY = 4330; - function isHexDigit(code) { - return code >= 48 && code <= 57 || // '0'-'9' - code >= 65 && code <= 70 || // 'A'-'F' - code >= 97 && code <= 102; // 'a'-'f' - } + function decrypt(stream, key, discardNumber) { + var r = key, c1 = 52845, c2 = 22719; + var decryptedString = []; - function decrypt(data, key, discardNumber) { - var r = key | 0, c1 = 52845, c2 = 22719; - var count = data.length; - var decrypted = new Uint8Array(count); + var value = ''; + var count = stream.length; for (var i = 0; i < count; i++) { - var value = data[i]; - decrypted[i] = value ^ (r >> 8); + value = stream[i]; + decryptedString[i] = value ^ (r >> 8); r = ((value + r) * c1 + c2) & ((1 << 16) - 1); } - 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); + return decryptedString.slice(discardNumber); } function isSpecial(c) { @@ -19205,11 +21331,7 @@ var Type1Parser = (function Type1ParserClosure() { function Type1Parser(stream, encrypted) { if (encrypted) { - 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)); + stream = new Stream(decrypt(stream.getBytes(), EEXEC_ENCRYPT_KEY, 4)); } this.stream = stream; this.nextChar(); @@ -19301,7 +21423,7 @@ var Type1Parser = (function Type1ParserClosure() { } } }; - var token, length, data, lenIV, encoded; + var token; while ((token = this.getToken()) !== null) { if (token !== '/') { continue; @@ -19325,11 +21447,12 @@ var Type1Parser = (function Type1ParserClosure() { continue; } var glyph = this.getToken(); - length = this.readInt(); + var length = this.readInt(); this.getToken(); // read in 'RD' or '-|' - data = stream.makeSubStream(stream.pos, length); - lenIV = program.properties.privateData['lenIV']; - encoded = decrypt(data.getBytes(), CHAR_STRS_ENCRYPT_KEY, lenIV); + var data = stream.makeSubStream(stream.pos, length); + var lenIV = program.properties.privateData['lenIV']; + var encoded = decrypt(data.getBytes(), CHAR_STRS_ENCRYPT_KEY, + lenIV); // Skip past the required space and binary data. stream.skip(length); this.nextChar(); @@ -19348,11 +21471,12 @@ var Type1Parser = (function Type1ParserClosure() { this.getToken(); // read in 'array' while ((token = this.getToken()) === 'dup') { var index = this.readInt(); - length = this.readInt(); + var length = this.readInt(); this.getToken(); // read in 'RD' or '-|' - data = stream.makeSubStream(stream.pos, length); - lenIV = program.properties.privateData['lenIV']; - encoded = decrypt(data.getBytes(), CHAR_STRS_ENCRYPT_KEY, lenIV); + var data = stream.makeSubStream(stream.pos, length); + var lenIV = program.properties.privateData['lenIV']; + var encoded = decrypt(data.getBytes(), CHAR_STRS_ENCRYPT_KEY, + lenIV); // Skip past the required space and binary data. stream.skip(length); this.nextChar(); @@ -19399,8 +21523,8 @@ var Type1Parser = (function Type1ParserClosure() { } for (var i = 0; i < charstrings.length; i++) { - glyph = charstrings[i].glyph; - encoded = charstrings[i].encoded; + var glyph = charstrings[i].glyph; + var encoded = charstrings[i].encoded; var charString = new Type1CharString(); var error = charString.convert(encoded, subrs); var output = charString.output; @@ -19411,11 +21535,11 @@ var Type1Parser = (function Type1ParserClosure() { output = [14]; } program.charstrings.push({ - glyphName: glyph, - charstring: output, - width: charString.width, + glyph: glyph, + data: output, + seac: charString.seac, lsb: charString.lsb, - seac: charString.seac + width: charString.width }); } @@ -19446,7 +21570,7 @@ var Type1Parser = (function Type1ParserClosure() { this.getToken(); // read in 'array' for (var j = 0; j < size; j++) { - token = this.getToken(); + var token = this.getToken(); // skipping till first dup or def (e.g. ignoring for statement) while (token !== 'dup' && token !== 'def') { token = this.getToken(); @@ -19464,7 +21588,10 @@ var Type1Parser = (function Type1ParserClosure() { this.getToken(); // read the in 'put' } } - properties.builtInEncoding = encoding; + if (properties.overridableEncoding && encoding) { + properties.baseEncoding = encoding; + break; + } break; case 'FontBBox': var fontBBox = this.readNumberArray(); @@ -19519,7 +21646,7 @@ var CFFStandardStrings = [ 'odieresis', 'ograve', 'otilde', 'scaron', 'uacute', 'ucircumflex', 'udieresis', 'ugrave', 'yacute', 'ydieresis', 'zcaron', 'exclamsmall', 'Hungarumlautsmall', 'dollaroldstyle', 'dollarsuperior', 'ampersandsmall', - 'Acutesmall', 'parenleftsuperior', 'parenrightsuperior', 'twodotenleader', + 'Acutesmall', 'parenleftsuperior', 'parenrightsuperior', '266 ff', 'onedotenleader', 'zerooldstyle', 'oneoldstyle', 'twooldstyle', 'threeoldstyle', 'fouroldstyle', 'fiveoldstyle', 'sixoldstyle', 'sevenoldstyle', 'eightoldstyle', 'nineoldstyle', 'commasuperior', @@ -19562,7 +21689,7 @@ 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) | @@ -19584,11 +21711,10 @@ 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 = data.charstrings; + var charstrings = this.getOrderedCharStrings(data.charstrings, properties); var type2Charstrings = this.getType2Charstrings(charstrings); var subrs = this.getType2Subrs(data.subrs); @@ -19599,37 +21725,35 @@ var Type1Font = function Type1Font(name, file, properties) { }; Type1Font.prototype = { - 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; - } + 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++; } + usedUnicodes[unicode] = true; + charstrings.push({ + glyph: glyphName, + unicode: unicode, + gid: i, + charstring: item.data, + width: item.width, + lsb: item.lsb + }); } - return type1FontGlyphMapping(properties, builtInEncoding, glyphNames); + charstrings.sort(function charstrings_sort(a, b) { + return a.unicode - b.unicode; + }); + return charstrings; }, getSeacs: function Type1Font_getSeacs(charstrings) { @@ -19638,8 +21762,7 @@ Type1Font.prototype = { for (i = 0, ii = charstrings.length; i < ii; i++) { var charstring = charstrings[i]; if (charstring.seac) { - // Offset by 1 for .notdef - seacMap[i + 1] = charstring.seac; + seacMap[i] = charstring.seac; } } return seacMap; @@ -19657,22 +21780,19 @@ 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 = []; - var i; - for (i = 0; i < bias; i++) { + for (var i = 0; i < bias; i++) type2Subrs.push([0x0B]); - } - for (i = 0; i < count; i++) { + for (var i = 0; i < count; i++) { type2Subrs.push(type1Subrs[i]); } @@ -19713,23 +21833,22 @@ Type1Font.prototype = { var count = glyphs.length; var charsetArray = [0]; - 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) { + 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) 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 (i = 0; i < count; i++) { + for (var i = 0; i < count; i++) { charStringsIndex.add(glyphs[i]); } cff.charStrings = charStringsIndex; @@ -19752,11 +21871,10 @@ Type1Font.prototype = { 'StdHW', 'StdVW' ]; - for (i = 0, ii = fields.length; i < ii; i++) { + for (var 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 @@ -19770,7 +21888,7 @@ Type1Font.prototype = { cff.topDict.privateDict = privateDict; var subrIndex = new CFFIndex(); - for (i = 0, ii = subrs.length; i < ii; i++) { + for (var i = 0, ii = subrs.length; i < ii; i++) { subrIndex.add(subrs[i]); } privateDict.subrsIndex = subrIndex; @@ -19787,7 +21905,7 @@ var CFFFont = (function CFFFontClosure() { var parser = new CFFParser(file, properties); this.cff = parser.parse(); var compiler = new CFFCompiler(this.cff); - this.seacs = this.cff.seacs; + this.readExtra(); try { this.data = compiler.compile(); } catch (e) { @@ -19799,42 +21917,111 @@ var CFFFont = (function CFFFontClosure() { } CFFFont.prototype = { - get numGlyphs() { - return this.cff.charStrings.count; - }, - 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 charCodeToGlyphId; - var glyphId; + readExtra: function CFFFont_readExtra() { + // charstrings contains info about glyphs (one element per glyph + // containing mappings for {unicode, width}) + var charstrings = this.getCharStrings(); - if (properties.composite) { - charCodeToGlyphId = Object.create(null); - if (cff.isCIDFont) { + // 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; + }, + getCharStrings: function CFFFont_getCharStrings() { + var cff = this.cff; + 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) { // If the font is actually a CID font then we should use the charset // to map CIDs to GIDs. - for (glyphId = 0; glyphId < charsets.length; glyphId++) { - var cid = charsets[glyphId]; - var charCode = properties.cMap.charCodeOf(cid); - charCodeToGlyphId[charCode] = glyphId; - } + inverseEncoding = charsets; } else { // If it is NOT actually a CID font then CIDs should be mapped // directly to GIDs. - for (glyphId = 0; glyphId < cff.charStrings.count; glyphId++) { - charCodeToGlyphId[glyphId] = glyphId; + 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; } } - return charCodeToGlyphId; } - var encoding = cff.encoding ? cff.encoding.encoding : null; - charCodeToGlyphId = type1FontGlyphMapping(properties, encoding, charsets); - 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; } }; @@ -19844,10 +22031,10 @@ var CFFFont = (function CFFFontClosure() { var CFFParser = (function CFFParserClosure() { var CharstringValidationData = [ null, - { id: 'hstem', min: 2, stackClearing: true, stem: true }, + { id: 'hstem', min: 2, resetStack: true, stem: true }, null, - { id: 'vstem', min: 2, stackClearing: true, stem: true }, - { id: 'vmoveto', min: 1, stackClearing: true }, + { id: 'vstem', min: 2, resetStack: true, stem: true }, + { id: 'vmoveto', min: 1, resetStack: true }, { id: 'rlineto', min: 2, resetStack: true }, { id: 'hlineto', min: 1, resetStack: true }, { id: 'vlineto', min: 1, resetStack: true }, @@ -19857,16 +22044,16 @@ var CFFParser = (function CFFParserClosure() { { id: 'return', min: 0, undefStack: true }, null, // 12 null, - { id: 'endchar', min: 0, stackClearing: true }, + null, // endchar null, null, null, - { 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: '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: 'rcurveline', min: 8, resetStack: true }, { id: 'rlinecurve', min: 8, resetStack: true }, { id: 'vvcurveto', min: 4, resetStack: true }, @@ -19972,7 +22159,6 @@ 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) { @@ -20017,17 +22203,12 @@ var CFFParser = (function CFFParserClosure() { }, parseHeader: function CFFParser_parseHeader() { var bytes = this.bytes; - var bytesLength = bytes.length; var offset = 0; - // 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) { + while (bytes[offset] != 1) ++offset; - } - if (offset >= bytesLength) { - error('Invalid CFF header'); - } else if (offset !== 0) { + + if (offset !== 0) { info('cff data is shifted'); bytes = bytes.subarray(offset); this.bytes = bytes; @@ -20037,7 +22218,7 @@ 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; @@ -20079,14 +22260,12 @@ 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); @@ -20095,14 +22274,13 @@ var CFFParser = (function CFFParserClosure() { var operands = []; var entries = []; - pos = 0; + var 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; @@ -20117,15 +22295,15 @@ 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 (i = 0, ii = count + 1; i < ii; ++i) { + for (var i = 0, ii = count + 1; i < ii; ++i) { var offset = 0; for (var j = 0; j < offsetSize; ++j) { offset <<= 8; @@ -20135,7 +22313,7 @@ var CFFParser = (function CFFParserClosure() { } end = offsets[count]; } - for (i = 0, ii = offsets.length - 1; i < ii; ++i) { + for (var i = 0, ii = offsets.length - 1; i < ii; ++i) { var offsetStart = offsets[i]; var offsetEnd = offsets[i + 1]; cffIndex.add(bytes.subarray(offsetStart, offsetEnd)); @@ -20159,13 +22337,13 @@ 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 === 35 /* # */) { + c === 47 /* / */ || c === 37 /* % */) { data[j] = 95; continue; } data[j] = c; } - names.push(bytesToString(data)); + names.push(String.fromCharCode.apply(null, data)); } return names; }, @@ -20173,12 +22351,14 @@ 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(bytesToString(data)); + strings.add(String.fromCharCode.apply(null, 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]; @@ -20190,7 +22370,6 @@ 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); @@ -20202,11 +22381,10 @@ 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 @@ -20224,7 +22402,7 @@ 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) { @@ -20232,26 +22410,24 @@ 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 %= 2; - validationCommand = CharstringValidationData[value]; + stackSize = 0; } else { validationCommand = CharstringValidationData[value]; } @@ -20268,35 +22444,17 @@ 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; } } } @@ -20305,7 +22463,7 @@ var CFFParser = (function CFFParserClosure() { charStrings.set(i, new Uint8Array([14])); } } - return { charStrings: charStrings, seacs: seacs, widths: widths }; + return { charStrings: charStrings, seacs: seacs }; }, emptyPrivateDictionary: function CFFParser_emptyPrivateDictionary(parentDict) { @@ -20342,9 +22500,8 @@ 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. @@ -20359,10 +22516,10 @@ 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); } @@ -20371,34 +22528,31 @@ 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 (i = 0; i < length; i++) { - id = (bytes[pos++] << 8) | bytes[pos++]; + for (var i = 0; i < length; i++) { + var id = (bytes[pos++] << 8) | bytes[pos++]; charset.push(cid ? id : strings.get(id)); } break; case 1: while (charset.length <= length) { - id = (bytes[pos++] << 8) | bytes[pos++]; - count = bytes[pos++]; - for (i = 0; i <= count; i++) { + var id = (bytes[pos++] << 8) | bytes[pos++]; + var count = bytes[pos++]; + for (var i = 0; i <= count; i++) charset.push(cid ? id++ : strings.get(id++)); - } } break; case 2: while (charset.length <= length) { - id = (bytes[pos++] << 8) | bytes[pos++]; - count = (bytes[pos++] << 8) | bytes[pos++]; - for (i = 0; i <= count; i++) { + var id = (bytes[pos++] << 8) | bytes[pos++]; + var count = (bytes[pos++] << 8) | bytes[pos++]; + for (var i = 0; i <= count; i++) charset.push(cid ? id++ : strings.get(id++)); - } } break; default: @@ -20418,49 +22572,47 @@ var CFFParser = (function CFFParserClosure() { var bytes = this.bytes; var predefined = false; var hasSupplement = false; - var format, i, ii; + var format; var raw = null; function readSupplement() { var supplementsCount = bytes[pos++]; - for (i = 0; i < supplementsCount; i++) { + for (var 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 (i = 0, ii = charset.length; i < ii; i++) { + for (var 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; - format = bytes[pos++]; + var format = bytes[pos++]; switch (format & 0x7f) { case 0: var glyphsCount = bytes[pos++]; - for (i = 1; i <= glyphsCount; i++) { + for (var i = 1; i <= glyphsCount; i++) encoding[bytes[pos++]] = i; - } break; case 1: var rangesCount = bytes[pos++]; var gid = 1; - for (i = 0; i < rangesCount; i++) { + for (var 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; @@ -20489,24 +22641,21 @@ var CFFParser = (function CFFParserClosure() { var bytes = this.bytes; var format = bytes[pos++]; var fdSelect = []; - var i; - switch (format) { case 0: - for (i = 0; i < length; ++i) { + for (var i = 0; i < length; ++i) { var id = bytes[pos++]; fdSelect.push(id); } break; case 3: var rangesCount = (bytes[pos++] << 8) | bytes[pos++]; - for (i = 0; i < rangesCount; ++i) { + for (var 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; @@ -20560,12 +22709,10 @@ 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) { @@ -20616,18 +22763,15 @@ 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; }, @@ -20641,13 +22785,11 @@ 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) { @@ -20720,9 +22862,8 @@ 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; } @@ -20753,9 +22894,8 @@ 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; } @@ -20768,6 +22908,11 @@ 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; @@ -20778,6 +22923,14 @@ 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; @@ -20807,9 +22960,8 @@ 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) { @@ -20820,9 +22972,8 @@ 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; @@ -20834,9 +22985,8 @@ 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; @@ -20851,6 +23001,13 @@ 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; } @@ -20947,7 +23104,7 @@ 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. - compiled = this.compileTopDicts(cff.fdArray, output.length, true); + var compiled = this.compileTopDicts(cff.fdArray, output.length, true); topDictTracker.setEntryLocation('FDArray', [output.length], output); output.add(compiled.output); var fontDictTrackers = compiled.trackers; @@ -20964,11 +23121,10 @@ 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(); @@ -20981,8 +23137,7 @@ var CFFCompiler = (function CFFCompilerClosure() { } var nibbles = ''; - var i, ii; - for (i = 0, ii = value.length; i < ii; ++i) { + for (var i = 0, ii = value.length; i < ii; ++i) { var a = value[i]; if (a === 'e') { nibbles += value[++i] === '-' ? 'c' : 'b'; @@ -20996,7 +23151,7 @@ var CFFCompiler = (function CFFCompilerClosure() { } nibbles += (nibbles.length & 1) ? 'f' : 'ff'; var out = [30]; - for (i = 0, ii = nibbles.length; i < ii; i += 2) { + for (var i = 0, ii = nibbles.length; i < ii; i += 2) { out.push(parseInt(nibbles.substr(i, 2), 16)); } return out; @@ -21032,9 +23187,8 @@ 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(stringToBytes(names[i])); - } + for (var i = 0, ii = names.length; i < ii; ++i) + nameIndex.add(stringToArray(names[i])); return this.compileIndex(nameIndex); }, compileTopDicts: function CFFCompiler_compileTopDicts(dicts, @@ -21102,22 +23256,16 @@ 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]; @@ -21134,17 +23282,15 @@ 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); @@ -21157,9 +23303,8 @@ 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(stringToBytes(strings[i])); - } + for (var i = 0, ii = strings.length; i < ii; ++i) + stringIndex.add(stringToArray(strings[i])); return this.compileIndex(stringIndex); }, compileGlobalSubrIndex: function CFFCompiler_compileGlobalSubrIndex() { @@ -21180,9 +23325,8 @@ 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) { @@ -21193,34 +23337,31 @@ 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, i; - for (i = 0; i < count; ++i) { + var lastOffset = 1; + for (var 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 (i = 0; i < count + 1; i++) { + for (var i = 0; i < count + 1; i++) { if (offsetSize === 1) { data.push(relativeOffset & 0xFF); } else if (offsetSize === 2) { @@ -21237,19 +23378,17 @@ var CFFCompiler = (function CFFCompilerClosure() { relativeOffset & 0xFF); } - if (objects[i]) { + if (objects[i]) relativeOffset += objects[i].length; - } } + var offset = data.length; - for (i = 0; i < count; i++) { + for (var 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; } @@ -21269,7 +23408,7 @@ var CFFCompiler = (function CFFCompilerClosure() { // https://github.com/mozilla/pdf.js/issues/1689 (function checkChromeWindows() { if (/Windows.*Chrome/.test(navigator.userAgent)) { - SKIP_PRIVATE_USE_RANGE_F000_TO_F01F = true; + SYMBOLIC_FONT_GLYPH_OFFSET = 0xF100; } })(); @@ -21285,26 +23424,25 @@ 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) { - length = getUshort(data, start + offset + 2); + var length = getUshort(data, start + offset + 2); var segCount = getUshort(data, start + offset + 6) >> 1; - p = start + offset + 14; - ranges = []; - for (i = 0; i < segCount; i++, p += 2) { + var p = start + offset + 14; + var ranges = []; + for (var i = 0; i < segCount; i++, p += 2) { ranges[i] = {end: getUshort(data, p)}; } p += 2; - for (i = 0; i < segCount; i++, p += 2) { + for (var i = 0; i < segCount; i++, p += 2) { ranges[i].start = getUshort(data, p); } - for (i = 0; i < segCount; i++, p += 2) { + for (var i = 0; i < segCount; i++, p += 2) { ranges[i].idDelta = getUshort(data, p); } - for (i = 0; i < segCount; i++, p += 2) { + for (var i = 0; i < segCount; i++, p += 2) { var idOffset = getUshort(data, p); if (idOffset === 0) { continue; @@ -21317,11 +23455,11 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { } return ranges; } else if (format === 12) { - length = getLong(data, start + offset + 4); + var length = getLong(data, start + offset + 4); var groups = getLong(data, start + offset + 12); - p = start + offset + 16; - ranges = []; - for (i = 0; i < groups; i++) { + var p = start + offset + 16; + var ranges = []; + for (var i = 0; i < groups; i++) { ranges.push({ start: getLong(data, p), end: getLong(data, p + 4), @@ -21336,13 +23474,13 @@ 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 }; } @@ -21403,13 +23541,16 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { var i = 0; var numberOfContours = ((code[i] << 24) | (code[i + 1] << 16)) >> 16; - var flags; - var x = 0, y = 0; + 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; i += 10; if (numberOfContours < 0) { // composite glyph + var x = 0, y = 0; do { - flags = (code[i] << 8) | code[i + 1]; + var flags = (code[i] << 8) | code[i + 1]; var glyphIndex = (code[i + 2] << 8) | code[i + 3]; i += 4; var arg1, arg2; @@ -21454,8 +23595,7 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { } else { // simple glyph var endPtsOfContours = []; - var j, jj; - for (j = 0; j < numberOfContours; j++) { + for (var j = 0; j < numberOfContours; j++) { endPtsOfContours.push((code[i] << 8) | code[i + 1]); i += 2; } @@ -21464,8 +23604,7 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { var numberOfPoints = endPtsOfContours[endPtsOfContours.length - 1] + 1; var points = []; while (points.length < numberOfPoints) { - flags = code[i++]; - var repeat = 1; + var flags = code[i++], repeat = 1; if ((flags & 0x08)) { repeat += code[i++]; } @@ -21473,7 +23612,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { points.push({flags: flags}); } } - for (j = 0; j < numberOfPoints; j++) { + var x = 0, y = 0; + for (var j = 0; j < numberOfPoints; j++) { switch (points[j].flags & 0x12) { case 0x00: x += ((code[i] << 24) | (code[i + 1] << 16)) >> 16; @@ -21488,7 +23628,7 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { } points[j].x = x; } - for (j = 0; j < numberOfPoints; j++) { + for (var j = 0; j < numberOfPoints; j++) { switch (points[j].flags & 0x24) { case 0x00: y += ((code[i] << 24) | (code[i + 1] << 16)) >> 16; @@ -21505,7 +23645,7 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { } var startPoint = 0; - for (i = 0; i < numberOfContours; i++) { + for (var 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 @@ -21526,7 +23666,7 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { contour.push(p); } moveTo(contour[0].x, contour[0].y); - for (j = 1, jj = contour.length; j < jj; j++) { + for (var 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)){ @@ -21565,7 +23705,6 @@ 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; @@ -21611,15 +23750,15 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { break; case 8: // rrcurveto while (stack.length > 0) { - xa = x + stack.shift(); ya = y + stack.shift(); - xb = xa + stack.shift(); yb = ya + stack.shift(); + var xa = x + stack.shift(), ya = y + stack.shift(); + var 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 - n = stack.pop() + font.subrsBias; - subrCode = font.subrs[n]; + var n = stack.pop() + font.subrsBias; + var subrCode = font.subrs[n]; if (subrCode) { parse(subrCode); } @@ -21630,50 +23769,49 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { v = code[i++]; switch (v) { case 34: // flex - xa = x + stack.shift(); - xb = xa + stack.shift(); y1 = y + stack.shift(); + var xa = x + stack.shift(); + var xb = xa + stack.shift(), y1 = y + stack.shift(); x = xb + stack.shift(); bezierCurveTo(xa, y, xb, y1, x, y1); - xa = x + stack.shift(); - xb = xa + stack.shift(); + var xa = x + stack.shift(); + var xb = xa + stack.shift(); x = xb + stack.shift(); bezierCurveTo(xa, y1, xb, y, x, y); break; case 35: // flex - xa = x + stack.shift(); ya = y + stack.shift(); - xb = xa + stack.shift(); yb = ya + stack.shift(); + var xa = x + stack.shift(), ya = y + stack.shift(); + var xb = xa + stack.shift(), yb = ya + stack.shift(); x = xb + stack.shift(); y = yb + stack.shift(); bezierCurveTo(xa, ya, xb, yb, x, y); - xa = x + stack.shift(); ya = y + stack.shift(); - xb = xa + stack.shift(); yb = ya + stack.shift(); + var xa = x + stack.shift(), ya = y + stack.shift(); + var 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 - xa = x + stack.shift(); y1 = y + stack.shift(); - xb = xa + stack.shift(); y2 = y1 + stack.shift(); + var xa = x + stack.shift(), y1 = y + stack.shift(); + var xb = xa + stack.shift(), y2 = y1 + stack.shift(); x = xb + stack.shift(); bezierCurveTo(xa, y1, xb, y2, x, y2); - xa = x + stack.shift(); - xb = xa + stack.shift(); y3 = y2 + stack.shift(); + var xa = x + stack.shift(); + var 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; - xa = x + stack.shift(); ya = y + stack.shift(); - xb = xa + stack.shift(); yb = ya + stack.shift(); + var xa = x + stack.shift(), ya = y + stack.shift(); + var xb = xa + stack.shift(), yb = ya + stack.shift(); x = xb + stack.shift(); y = yb + stack.shift(); bezierCurveTo(xa, ya, xb, yb, x, y); - xa = x + stack.shift(); ya = y + stack.shift(); - xb = xa + stack.shift(); yb = ya + stack.shift(); + var xa = x + stack.shift(), ya = y + stack.shift(); + var 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: @@ -21729,8 +23867,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { break; case 24: // rcurveline while (stack.length > 2) { - xa = x + stack.shift(); ya = y + stack.shift(); - xb = xa + stack.shift(); yb = ya + stack.shift(); + var xa = x + stack.shift(), ya = y + stack.shift(); + var xb = xa + stack.shift(), yb = ya + stack.shift(); x = xb + stack.shift(); y = yb + stack.shift(); bezierCurveTo(xa, ya, xb, yb, x, y); } @@ -21744,8 +23882,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { y += stack.shift(); lineTo(x, y); } - xa = x + stack.shift(); ya = y + stack.shift(); - xb = xa + stack.shift(); yb = ya + stack.shift(); + var xa = x + stack.shift(), ya = y + stack.shift(); + var xb = xa + stack.shift(), yb = ya + stack.shift(); x = xb + stack.shift(); y = yb + stack.shift(); bezierCurveTo(xa, ya, xb, yb, x, y); break; @@ -21754,8 +23892,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { x += stack.shift(); } while (stack.length > 0) { - xa = x; ya = y + stack.shift(); - xb = xa + stack.shift(); yb = ya + stack.shift(); + var xa = x, ya = y + stack.shift(); + var xb = xa + stack.shift(), yb = ya + stack.shift(); x = xb; y = yb + stack.shift(); bezierCurveTo(xa, ya, xb, yb, x, y); } @@ -21765,8 +23903,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { y += stack.shift(); } while (stack.length > 0) { - xa = x + stack.shift(); ya = y; - xb = xa + stack.shift(); yb = ya + stack.shift(); + var xa = x + stack.shift(), ya = y; + var xb = xa + stack.shift(), yb = ya + stack.shift(); x = xb + stack.shift(); y = yb; bezierCurveTo(xa, ya, xb, yb, x, y); } @@ -21776,16 +23914,16 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { i += 2; break; case 29: // callgsubr - n = stack.pop() + font.gsubrsBias; - subrCode = font.gsubrs[n]; + var n = stack.pop() + font.gsubrsBias; + var subrCode = font.gsubrs[n]; if (subrCode) { parse(subrCode); } break; case 30: // vhcurveto while (stack.length > 0) { - xa = x; ya = y + stack.shift(); - xb = xa + stack.shift(); yb = ya + stack.shift(); + var xa = x, ya = y + stack.shift(); + var 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); @@ -21793,8 +23931,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { break; } - xa = x + stack.shift(); ya = y; - xb = xa + stack.shift(); yb = ya + stack.shift(); + var xa = x + stack.shift(), ya = y; + var 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); @@ -21802,8 +23940,8 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { break; case 31: // hvcurveto while (stack.length > 0) { - xa = x + stack.shift(); ya = y; - xb = xa + stack.shift(); yb = ya + stack.shift(); + var xa = x + stack.shift(), ya = y; + var 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); @@ -21811,24 +23949,23 @@ var FontRendererFactory = (function FontRendererFactoryClosure() { break; } - xa = x; ya = y + stack.shift(); - xb = xa + stack.shift(); yb = ya + stack.shift(); + var xa = x, ya = y + stack.shift(); + var 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; @@ -21912,10 +24049,10 @@ 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, { @@ -21931,7 +24068,7 @@ 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 = bytesToString(data.subarray(p, p + 4)); + var tag = String.fromCharCode.apply(null, data.subarray(p, p + 4)); var offset = getLong(data, p + 8); var length = getLong(data, p + 12); switch (tag) { @@ -21955,8 +24092,8 @@ 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 { @@ -26175,211 +28312,6 @@ 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() { @@ -26387,24 +28319,22 @@ 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) { + function handleImageData(handler, xref, res, image, promise) { 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; - var decodePromise = handler.sendWithPromise('JpegDecode', - [image.getIR(), numComps]); - return decodePromise.then(function (message) { + handler.send('JpegDecode', [image.getIR(), numComps], function(message) { var data = message.data; - return new Stream(data, 0, data.length, image.dict); + var stream = new Stream(data, 0, data.length, image.dict); + promise.resolve(stream); }); } else { - return Promise.resolve(image); + 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. @@ -26412,34 +28342,26 @@ 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; - 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; - } + 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 = ... } // 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; @@ -26449,11 +28371,10 @@ 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; @@ -26461,21 +28382,8 @@ var PDFImage = (function PDFImageClosure() { if (!this.imageMask) { var colorSpace = dict.get('ColorSpace', 'CS'); if (!colorSpace) { - 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.'); - } + warn('JPX images (which don"t require color spaces'); + colorSpace = new Name('DeviceRGB'); } this.colorSpace = ColorSpace.parse(colorSpace, xref, res); this.numComps = this.colorSpace.numComps; @@ -26511,47 +28419,51 @@ var PDFImage = (function PDFImageClosure() { } } /** - * Handles processing of image data and returns the Promise that is resolved - * with a PDFImage when the image is ready to be used. + * Handles processing of image data and calls the callback with an argument + * of a PDFImage when the image is ready to be used. */ - PDFImage.buildImage = function PDFImage_buildImage(handler, xref, + PDFImage.buildImage = function PDFImage_buildImage(callback, handler, xref, res, image, inline) { - var imagePromise = handleImageData(handler, xref, res, image); - var smaskPromise; - var maskPromise; + 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 smask = image.dict.get('SMask'); var mask = image.dict.get('Mask'); if (smask) { - smaskPromise = handleImageData(handler, xref, res, smask); - maskPromise = Promise.resolve(null); + handleImageData(handler, xref, res, smask, smaskPromise); + maskPromise.resolve(null); } else { - smaskPromise = Promise.resolve(null); + smaskPromise.resolve(null); if (mask) { if (isStream(mask)) { - maskPromise = handleImageData(handler, xref, res, mask); + handleImageData(handler, xref, res, mask, maskPromise); } else if (isArray(mask)) { - maskPromise = Promise.resolve(mask); + maskPromise.resolve(mask); } else { warn('Unsupported mask format.'); - maskPromise = Promise.resolve(null); + maskPromise.resolve(null); } } else { - maskPromise = Promise.resolve(null); + maskPromise.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. @@ -26560,92 +28472,49 @@ 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, dest, alpha01) { - - if (components !== 1 && components !== 3) { - error('Unsupported component count for resizing.'); - } - + w1, h1, w2, h2) { var length = w2 * h2 * components; - var temp = dest ? dest : (bpc <= 8 ? new Uint8Array(length) : - (bpc <= 16 ? new Uint16Array(length) : new Uint32Array(length))); + var temp = bpc <= 8 ? new Uint8Array(length) : + bpc <= 16 ? new Uint16Array(length) : new Uint32Array(length); var xRatio = w1 / w2; var yRatio = h1 / h2; - 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; + 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]; } } } return temp; }; - 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 { - 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. + 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 (i = 0; i < actualLength; i++) { - data[i] = ~data[i]; + for (var i = 0; i < length; i++) { + data[i] = ~imgArray[i]; + } + } else { + for (var i = 0; i < length; i++) { + data[i] = imgArray[i]; } } @@ -26654,100 +28523,85 @@ var PDFImage = (function PDFImageClosure() { PDFImage.prototype = { get drawWidth() { - return Math.max(this.width, - this.smask && this.smask.width || 0, - this.mask && this.mask.width || 0); + if (!this.smask) + return this.width; + return Math.max(this.width, this.smask.width); }, - get drawHeight() { - return Math.max(this.height, - this.smask && this.smask.height || 0, - this.mask && this.mask.height || 0); + if (!this.smask) + return this.height; + return Math.max(this.height, this.smask.height); }, - 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 (i = 0, ii = buffer.length; i < ii; i++) { + for (var i = 0, ii = buffer.length; i < ii; i++) { buffer[i] = +!(buffer[i]); } return; } var index = 0; - for (i = 0, ii = this.width * this.height; i < ii; i++) { + for (var 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, loop1End, loop2End; - for (var j = 0; j < height; j++) { - loop1End = i + (rowComps & ~7); - loop2End = i + rowComps; + var mask = 0; + var buf = 0; - // 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; + for (var i = 0, ii = length; i < ii; ++i) { + if (i % rowComps === 0) { + mask = 0; + buf = 0; + } else { + mask >>= 1; } - // handle remaing bits - if (i < loop2End) { + if (mask <= 0) { 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 (i = 0, ii = length; i < ii; ++i) { + var bits = 0, buf = 0; + for (var i = 0, ii = length; i < ii; ++i) { if (i % rowComps === 0) { buf = 0; bits = 0; @@ -26760,55 +28614,50 @@ 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; }, - - fillOpacity: function PDFImage_fillOpacity(rgbaBuf, width, height, - actualHeight, image) { + getOpacity: function PDFImage_getOpacity(width, height, image) { var smask = this.smask; var mask = this.mask; - var alphaBuf, sw, sh, i, ii, j; + var originalWidth = this.width; + var originalHeight = this.height; + var buf; if (smask) { - 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); - } + 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); } else if (mask) { if (mask instanceof PDFImage) { - sw = mask.width; - sh = mask.height; - alphaBuf = new Uint8Array(sw * sh); + var sw = mask.width; + var sh = mask.height; + buf = new Uint8Array(sw * sh); mask.numComps = 1; - mask.fillGrayBuffer(alphaBuf); + mask.fillGrayBuffer(buf); - // Need to invert values in rgbaBuf - for (i = 0, ii = sw * sh; i < ii; ++i) { - alphaBuf[i] = 255 - alphaBuf[i]; - } + // Need to invert values in buffer + for (var i = 0, ii = sw * sh; i < ii; ++i) + buf[i] = 255 - buf[i]; - if (sw !== width || sh !== height) { - alphaBuf = PDFImage.resize(alphaBuf, mask.bpc, 1, sw, sh, width, - height); - } + if (sw != width || sh != height) + buf = PDFImage.resize(buf, 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. - alphaBuf = new Uint8Array(width * height); + buf = new Uint8Array(width * height); var numComps = this.numComps; - for (i = 0, ii = width * height; i < ii; ++i) { + for (var i = 0, ii = width * height; i < ii; ++i) { var opacity = 0; var imageOffset = i * numComps; - for (j = 0; j < numComps; ++j) { + for (var j = 0; j < numComps; ++j) { var color = image[imageOffset + j]; var maskOffset = j * 2; if (color < mask[maskOffset] || color > mask[maskOffset + 1]) { @@ -26816,214 +28665,122 @@ var PDFImage = (function PDFImageClosure() { break; } } - alphaBuf[i] = opacity; + buf[i] = opacity; } } else { error('Unknown mask format.'); } - } - - 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; - } + buf = new Uint8Array(width * height); + for (var i = 0, ii = width * height; i < ii; ++i) + buf[i] = 255; } + return buf; }, - 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 white (typical paper color) should be okay + // making it as white (tipical paper color) should be okay buffer[i] = 255; buffer[i + 1] = 255; buffer[i + 2] = 255; continue; } var k = 255 / alpha; - 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; + 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]); } }, - - 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 - }; - + fillRgbaBuffer: function PDFImage_fillRgbaBuffer(buffer, width, height) { 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; + var imgArray = this.getImageBytes(originalHeight * rowBytes); - 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). + // imgArray can be incomplete (e.g. after CCITT fax encoding) var actualHeight = 0 | (imgArray.length / rowBytes * - drawHeight / originalHeight); - + height / originalHeight); var comps = this.getComponents(imgArray); - - // 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); - } + // Build opacity here since color key masking needs to be perormed on + // undecoded values. + var opacity = this.getOpacity(width, height, comps); if (this.needsDecode) { this.decodeBuffer(comps); } - this.colorSpace.fillRgb(imgData.data, originalWidth, originalHeight, - drawWidth, drawHeight, actualHeight, bpc, comps, - alpha01); - if (maybeUndoPreblend) { - this.undoPreblend(imgData.data, drawWidth, actualHeight); + 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++]; } - return imgData; + this.undoPreblend(buffer, width, actualHeight); }, - 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); } - length = width * height; + var length = width * height; // we aren't using a colorspace so we need to scale the value var scale = 255 / ((1 << bpc) - 1); - for (i = 0; i < length; ++i) { + for (var i = 0; i < length; ++i) buffer[i] = (scale * comps[i]) | 0; - } }, - - getImageBytes: function PDFImage_getImageBytes(length, - drawWidth, drawHeight, - forceRGB) { + 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) { this.image.reset(); - this.image.drawWidth = drawWidth || this.width; - this.image.drawHeight = drawHeight || this.height; - this.image.forceRGB = !!forceRGB; return this.image.getBytes(length); } }; @@ -29978,7 +31735,7 @@ var Metrics = { var EOF = {}; function isEOF(v) { - return (v === EOF); + return v == EOF; } var Parser = (function ParserClosure() { @@ -29986,11 +31743,6 @@ var Parser = (function ParserClosure() { this.lexer = lexer; this.allowStreams = allowStreams; this.xref = xref; - this.imageCache = { - length: 0, - adler32: 0, - stream: null - }; this.refill(); } @@ -30009,58 +31761,51 @@ var Parser = (function ParserClosure() { } }, getObj: function Parser_getObj(cipherTransform) { - 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(); - 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'); - } - - // 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; - } + 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'); + this.shift(); + continue; + } - if (isInt(buf1)) { // indirect reference or integer - var num = buf1; + 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; + } + this.shift(); + return dict; + } + if (isInt(this.buf1)) { // indirect reference or integer + var num = this.buf1; + this.shift(); if (isInt(this.buf1) && isCmd(this.buf2, 'R')) { var ref = new Ref(num, this.buf1); this.shift(); @@ -30069,34 +31814,33 @@ var Parser = (function ParserClosure() { } return num; } - - if (isString(buf1)) { // string - var str = buf1; - if (cipherTransform) { + if (isString(this.buf1)) { // string + var str = this.buf1; + this.shift(); + if (cipherTransform) str = cipherTransform.decryptString(str); - } return str; } // simple object - return buf1; + var obj = this.buf1; + this.shift(); + return obj; }, makeInlineImage: function Parser_makeInlineImage(cipherTransform) { var lexer = this.lexer; var stream = lexer.stream; // parse dictionary - var dict = new Dict(null); + var dict = new Dict(); 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)); } @@ -30105,80 +31849,41 @@ var Parser = (function ParserClosure() { // searching for the /EI\s/ var state = 0, ch, i, ii; - 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++) { + 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++) { ch = followingBytes[i]; - 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. + if (ch !== 0x0A && ch !== 0x0D && (ch < 0x20 || ch > 0x7F)) { + // not a LF, CR, SPACE or any visible ASCII character state = 0; - break; + break; // some binary stuff found, resetting the state } } - if (state === 2) { - break; // finished! - } - } else { + state = state === 3 ? 4 : 0; + break; + case 0x45: + state = 2; + break; + case 0x49: + state = state === 2 ? 3 : 0; + break; + default: state = 0; - } + break; } } var length = (stream.pos - 4) - startPos; var imageStream = stream.makeSubStream(startPos, length, dict); - - // 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); - } - + if (cipherTransform) + imageStream = cipherTransform.createStream(imageStream); 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(); @@ -30187,7 +31892,7 @@ 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; @@ -30217,14 +31922,11 @@ 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, i, j; + var skipped = 0, found = false; while (stream.pos < stream.end) { var scanBytes = stream.peekBytes(SCAN_BLOCK_SIZE); var scanLength = scanBytes.length - ENDSTREAM_SIGNATURE_LENGTH; - if (scanLength <= 0) { - break; - } - found = false; + var found = false, i, ii, j; for (i = 0, j = 0; i < scanLength; i++) { var b = scanBytes[i]; if (b !== ENDSTREAM_SIGNATURE[j]) { @@ -30233,7 +31935,6 @@ var Parser = (function ParserClosure() { } else { j++; if (j >= ENDSTREAM_SIGNATURE_LENGTH) { - i++; found = true; break; } @@ -30259,9 +31960,8 @@ var Parser = (function ParserClosure() { this.shift(); // 'endstream' stream = stream.makeSubStream(pos, length, dict); - if (cipherTransform) { - stream = cipherTransform.createStream(stream, length); - } + if (cipherTransform) + stream = cipherTransform.createStream(stream); stream = this.filter(stream, dict, length); stream.dict = dict; return stream; @@ -30269,114 +31969,72 @@ 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, maybeLength, params); + stream = this.makeFilter(stream, filter.name, length, params); // after the first stream the length variable is invalid - maybeLength = null; + length = null; } } return stream; }, - makeFilter: function Parser_makeFilter(stream, name, maybeLength, params) { + makeFilter: function Parser_makeFilter(stream, name, length, params) { if (stream.dict.get('Length') === 0) { return new NullStream(stream); } - try { + if (name == 'FlateDecode' || name == 'Fl') { if (params) { - params = this.fetchIfRef(params); + return new PredictorStream(new FlateStream(stream), 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); - } - 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); + 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); + } + return new LZWStream(stream, earlyChange); + } + 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; } }; @@ -30388,13 +32046,6 @@ 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: @@ -30406,29 +32057,29 @@ 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) { @@ -30446,87 +32097,36 @@ 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 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; - + var str = String.fromCharCode(ch); while ((ch = this.nextChar()) >= 0) { - 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; - } + if (ch === 0x2E && !floating) { // '.' + str += '.'; + floating = true; } 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' - // '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; + floating = true; } else { // the last character doesn't belong to us break; } } - - if (divideBy !== 0) { - baseValue /= divideBy; - } - if (eNotation) { - baseValue *= Math.pow(10, powerValueSign * powerValue); - } - return sign * baseValue; + var value = parseFloat(str); + if (isNaN(value)) + error('Invalid floating point number: ' + value); + return value; }, getString: function Lexer_getString() { var numParen = 1; var done = false; - var strBuf = this.strBuf; - strBuf.length = 0; + var str = ''; var ch = this.nextChar(); while (true) { @@ -30538,14 +32138,14 @@ var Lexer = (function LexerClosure() { break; case 0x28: // '(' ++numParen; - strBuf.push('('); + str += '('; break; case 0x29: // ')' if (--numParen === 0) { this.nextChar(); // consume strings ')' done = true; } else { - strBuf.push(')'); + str += ')'; } break; case 0x5C: // '\\' @@ -30556,24 +32156,24 @@ var Lexer = (function LexerClosure() { done = true; break; case 0x6E: // 'n' - strBuf.push('\n'); + str += '\n'; break; case 0x72: // 'r' - strBuf.push('\r'); + str += '\r'; break; case 0x74: // 't' - strBuf.push('\t'); + str += '\t'; break; case 0x62: // 'b' - strBuf.push('\b'); + str += '\b'; break; case 0x66: // 'f' - strBuf.push('\f'); + str += '\f'; break; case 0x5C: // '\' case 0x28: // '(' case 0x29: // ')' - strBuf.push(String.fromCharCode(ch)); + str += String.fromCharCode(ch); break; case 0x30: case 0x31: case 0x32: case 0x33: // '0'-'3' case 0x34: case 0x35: case 0x36: case 0x37: // '4'-'7' @@ -30588,22 +32188,18 @@ var Lexer = (function LexerClosure() { x = (x << 3) + (ch & 0x0F); } } - strBuf.push(String.fromCharCode(x)); + + str += String.fromCharCode(x); break; - case 0x0D: // CR - if (this.peekChar() === 0x0A) { // LF - this.nextChar(); - } - break; - case 0x0A: // LF + case 0x0A: case 0x0D: // LF, CR break; default: - strBuf.push(String.fromCharCode(ch)); + str += String.fromCharCode(ch); break; } break; default: - strBuf.push(String.fromCharCode(ch)); + str += String.fromCharCode(ch); break; } if (done) { @@ -30613,38 +32209,35 @@ var Lexer = (function LexerClosure() { ch = this.nextChar(); } } - return strBuf.join(''); + return str; }, getName: function Lexer_getName() { - var ch; - var strBuf = this.strBuf; - strBuf.length = 0; + var str = '', ch; 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); - } - strBuf.push(String.fromCharCode((x << 4) | x2)); + str += String.fromCharCode((x << 4) | x2); } else { - strBuf.push('#', String.fromCharCode(ch)); + str += '#'; + str += String.fromCharCode(ch); } } else { - strBuf.push(String.fromCharCode(ch)); + str += String.fromCharCode(ch); } } - if (strBuf.length > 128) { + if (str.length > 128) { error('Warning: name token is longer than allowed by the spec: ' + - strBuf.length); + str.length); } - return Name.get(strBuf.join('')); + return new Name(str); }, getHexString: function Lexer_getHexString() { - var strBuf = this.strBuf; - strBuf.length = 0; + var str = ''; var ch = this.currentChar; var isFirstHex = true; var firstDigit; @@ -30674,13 +32267,13 @@ var Lexer = (function LexerClosure() { ch = this.nextChar(); continue; } - strBuf.push(String.fromCharCode((firstDigit << 4) | secondDigit)); + str += String.fromCharCode((firstDigit << 4) | secondDigit); } isFirstHex = !isFirstHex; ch = this.nextChar(); } } - return strBuf.join(''); + return str; }, getObj: function Lexer_getObj() { // skip whitespace and comments @@ -30691,9 +32284,8 @@ 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) { @@ -30750,32 +32342,29 @@ var Lexer = (function LexerClosure() { // command var str = String.fromCharCode(ch); var knownCommands = this.knownCommands; - var knownCommandFound = knownCommands && knownCommands[str] !== undefined; + var knownCommandFound = knownCommands && (str in knownCommands); 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 && knownCommands[possibleCommand] === undefined) { + if (knownCommandFound && !(possibleCommand in knownCommands)) { break; } - if (str.length === 128) { + if (str.length == 128) error('Command token too long: ' + str.length); - } str = possibleCommand; - knownCommandFound = knownCommands && knownCommands[str] !== undefined; + knownCommandFound = knownCommands && (str in knownCommands); } - 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 @@ -30796,264 +32385,87 @@ var Lexer = (function LexerClosure() { return Lexer; })(); -var Linearization = { - create: function LinearizationCreate(stream) { - function getInt(name, allowZeroValue) { - var obj = linDict.get(name); - if (isInt(obj) && (allowZeroValue ? obj >= 0 : obj > 0)) { +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) { return obj; } - 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; - } - 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(); + error('"' + name + '" field in linearization table is invalid'); }, - accept: function PostScriptParser_accept(type) { - if (this.token.type === type) { - this.nextToken(); - return true; + 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; } - return false; + error('Hints table in linearization table is invalid: ' + index); }, - expect: function PostScriptParser_expect(type) { - if (this.accept(type)) { - return true; - } - error('Unexpected symbol: found ' + this.token.type + ' expected ' + - type + '.'); + get length() { + if (!isDict(this.linDict)) + return 0; + return this.getInt('L'); }, - parse: function PostScriptParser_parse() { - this.nextToken(); - this.expect(PostScriptTokenTypes.LBRACE); - this.parseBlock(); - this.expect(PostScriptTokenTypes.RBRACE); - return this.operators; + get hintsOffset() { + return this.getHint(0); }, - 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 hintsLength() { + return this.getHint(1); }, - 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.'); - } + get hintsOffset2() { + return this.getHint(2); + }, + 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'); } }; - return PostScriptParser; + + return Linearization; })(); -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; @@ -31066,27 +32478,11 @@ 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) { @@ -31094,30 +32490,24 @@ 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() { @@ -31139,9 +32529,8 @@ 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); } @@ -31152,68 +32541,36 @@ var StringStream = (function StringStreamClosure() { // super class for the decoding streams var DecodeStream = (function DecodeStreamClosure() { - // 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) { + function DecodeStream() { this.pos = 0; this.bufferLength = 0; this.eof = false; - 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; - } - } + this.buffer = null; } 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; - if (requested <= buffer.byteLength) { + var current = buffer ? buffer.byteLength : 0; + if (requested < current) return buffer; - } - var size = this.minBufferLength; - while (size < requested) { - size *= 2; - } + var size = 512; + while (size < requested) + size <<= 1; var buffer2 = new Uint8Array(size); - buffer2.set(buffer); + for (var i = 0; i < current; ++i) + buffer2[i] = buffer[i]; 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; @@ -31221,28 +32578,27 @@ 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; @@ -31250,15 +32606,13 @@ 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 DecodeStream_skip(n) { - if (!n) { + skip: function Stream_skip(n) { + if (!n) n = 1; - } this.pos += n; }, reset: function DecodeStream_reset() { @@ -31275,16 +32629,55 @@ 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, /* maybeLength = */ null); + DecodeStream.call(this); } StreamsSequenceStream.prototype = Object.create(DecodeStream.prototype); StreamsSequenceStream.prototype.readBlock = - function streamSequenceStreamReadBlock() { + function streamSequenceStreamReadBlock() { var streams = this.streams; if (streams.length === 0) { @@ -31307,7 +32700,7 @@ var StreamsSequenceStream = (function StreamsSequenceStreamClosure() { for (var i = 0, ii = this.streams.length; i < ii; i++) { var stream = this.streams[i]; if (stream.getBaseStreams) { - Util.appendToArray(baseStreams, stream.getBaseStreams()); + Util.concatenateToArray(baseStreams, stream.getBaseStreams()); } } return baseStreams; @@ -31409,92 +32802,88 @@ var FlateStream = (function FlateStreamClosure() { 0x50003, 0x50013, 0x5000b, 0x5001b, 0x50007, 0x50017, 0x5000f, 0x00000 ]), 5]; - function FlateStream(str, maybeLength) { - this.str = str; - this.dict = str.dict; + function FlateStream(stream) { + var bytes = stream.getBytes(); + var bytesPos = 0; - var cmf = str.getByte(); - var flg = str.getByte(); - if (cmf === -1 || flg === -1) { + this.dict = stream.dict; + var cmf = bytes[bytesPos++]; + var flg = bytes[bytesPos++]; + 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, maybeLength); + DecodeStream.call(this); } 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 ((b = str.getByte()) === -1) { + if (typeof (b = bytes[bytesPos++]) == 'undefined') 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) { - if ((b = str.getByte()) === -1) { - // premature end of stream. code might however still be valid. - // codeSize < codeLen check below guards against incomplete codeVal. - break; - } + var b; + if (typeof (b = bytes[bytesPos++]) == 'undefined') + error('Bad encoding in flate stream'); codeBuf |= (b << codeSize); codeSize += 8; } var code = codes[codeBuf & ((1 << maxLen) - 1)]; var codeLen = code >> 16; var codeVal = code & 0xffff; - if (codeLen < 1 || codeSize < codeLen) { + if (codeSize === 0 || codeSize < codeLen || codeLen === 0) 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; - var i; - for (i = 0; i < n; ++i) { - if (lengths[i] > maxLen) { + for (var i = 0; i < n; ++i) { + if (lengths[i] > maxLen) maxLen = lengths[i]; - } } // build the table @@ -31504,19 +32893,19 @@ 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 (i = 0; i < len; ++i) { + for (var i = 0; i < len; ++i) { code2 = (code2 << 1) | (t & 1); t >>= 1; } // fill the table entries - for (i = code2; i < size; i += skip) { + for (var i = code2; i < size; i += skip) codes[i] = (len << 16) | val; - } + ++code; } } @@ -31526,35 +32915,30 @@ 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 ((b = str.getByte()) === -1) { + if (typeof (b = bytes[bytesPos++]) == 'undefined') error('Bad block header in flate stream'); - } var blockLen = b; - if ((b = str.getByte()) === -1) { + if (typeof (b = bytes[bytesPos++]) == 'undefined') error('Bad block header in flate stream'); - } blockLen |= (b << 8); - if ((b = str.getByte()) === -1) { + if (typeof (b = bytes[bytesPos++]) == 'undefined') error('Bad block header in flate stream'); - } var check = b; - if ((b = str.getByte()) === -1) { + if (typeof (b = bytes[bytesPos++]) == 'undefined') 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'); @@ -31564,31 +32948,32 @@ var FlateStream = (function FlateStreamClosure() { this.codeSize = 0; var bufferLength = this.bufferLength; - buffer = this.ensureBuffer(bufferLength + blockLen); + var buffer = this.ensureBuffer(bufferLength + blockLen); var end = bufferLength + blockLen; this.bufferLength = end; if (blockLen === 0) { - if (str.peekByte() === -1) { + if (typeof bytes[bytesPos] == 'undefined') { this.eof = true; } } else { for (var n = bufferLength; n < end; ++n) { - if ((b = str.getByte()) === -1) { + if (typeof (b = bytes[bytesPos++]) == 'undefined') { 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; @@ -31596,35 +32981,31 @@ var FlateStream = (function FlateStreamClosure() { // build the code lengths code table var codeLenCodeLengths = new Uint8Array(codeLenCodeMap.length); - var i; - for (i = 0; i < numCodeLenCodes; ++i) { + for (var i = 0; i < numCodeLenCodes; ++i) codeLenCodeLengths[codeLenCodeMap[i]] = this.getBits(3); - } var codeLenCodeTab = this.generateHuffmanTable(codeLenCodeLengths); // build the literal and distance code tables - len = 0; - i = 0; + var len = 0; + var 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) { - 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); + 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); } else { codeLengths[i++] = len = code; continue; } var repeatLength = this.getBits(bitsLength) + bitsOffset; - while (repeatLength-- > 0) { + while (repeatLength-- > 0) codeLengths[i++] = what; - } } litCodeTable = @@ -31635,7 +33016,7 @@ var FlateStream = (function FlateStreamClosure() { error('Unknown block type in flate stream'); } - buffer = this.buffer; + var buffer = this.buffer; var limit = buffer ? buffer.length : 0; var pos = this.bufferLength; while (true) { @@ -31648,31 +33029,28 @@ 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); - } - len = (code1 & 0xffff) + code2; + var 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]; - } } }; @@ -31680,21 +33058,18 @@ var FlateStream = (function FlateStreamClosure() { })(); var PredictorStream = (function PredictorStreamClosure() { - function PredictorStream(str, maybeLength, params) { + function PredictorStream(str, 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; @@ -31706,14 +33081,14 @@ var PredictorStream = (function PredictorStreamClosure() { this.pixBytes = (colors * bits + 7) >> 3; this.rowBytes = (columns * colors * bits + 7) >> 3; - DecodeStream.call(this, maybeLength); + DecodeStream.call(this); return this; } PredictorStream.prototype = Object.create(DecodeStream.prototype); PredictorStream.prototype.readBlockTiff = - function predictorStreamReadBlockTiff() { + function predictorStreamReadBlockTiff() { var rowBytes = this.rowBytes; var bufferLength = this.bufferLength; @@ -31731,10 +33106,9 @@ var PredictorStream = (function PredictorStreamClosure() { var inbuf = 0, outbuf = 0; var inbits = 0, outbits = 0; var pos = bufferLength; - var i; if (bits === 1) { - for (i = 0; i < rowBytes; ++i) { + for (var i = 0; i < rowBytes; ++i) { var c = rawBytes[i]; inbuf = (inbuf << 8) | c; // bitwise addition is exclusive or @@ -31744,9 +33118,8 @@ var PredictorStream = (function PredictorStreamClosure() { inbuf &= 0xFFFF; } } else if (bits === 8) { - for (i = 0; i < colors; ++i) { + for (var i = 0; i < colors; ++i) buffer[pos++] = rawBytes[i]; - } for (; i < rowBytes; ++i) { buffer[pos] = buffer[pos - colors] + rawBytes[i]; pos++; @@ -31756,7 +33129,7 @@ var PredictorStream = (function PredictorStreamClosure() { var bitMask = (1 << bits) - 1; var j = 0, k = bufferLength; var columns = this.columns; - for (i = 0; i < columns; ++i) { + for (var i = 0; i < columns; ++i) { for (var kk = 0; kk < colors; ++kk) { if (inbits < bits) { inbuf = (inbuf << 8) | (rawBytes[j++] & 0xFF); @@ -31775,14 +33148,14 @@ 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; @@ -31798,35 +33171,30 @@ 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 i, j = bufferLength, up, c; + var j = bufferLength; switch (predictor) { case 0: - for (i = 0; i < rowBytes; ++i) { + for (var i = 0; i < rowBytes; ++i) buffer[j++] = rawBytes[i]; - } break; case 1: - for (i = 0; i < pixBytes; ++i) { + for (var 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 (i = 0; i < rowBytes; ++i) { + for (var i = 0; i < rowBytes; ++i) buffer[j++] = (prevRow[i] + rawBytes[i]) & 0xFF; - } break; case 3: - for (i = 0; i < pixBytes; ++i) { + for (var 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; @@ -31836,38 +33204,34 @@ 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 (i = 0; i < pixBytes; ++i) { - up = prevRow[i]; - c = rawBytes[i]; + for (var i = 0; i < pixBytes; ++i) { + var up = prevRow[i]; + var c = rawBytes[i]; buffer[j++] = up + c; } for (; i < rowBytes; ++i) { - up = prevRow[i]; + var 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; - } - c = rawBytes[i]; - if (pa <= pb && pa <= pc) { + var 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: @@ -31887,56 +33251,28 @@ var PredictorStream = (function PredictorStreamClosure() { * DecodeStreams. */ var JpegStream = (function JpegStreamClosure() { - function JpegStream(stream, maybeLength, dict, xref) { + function JpegStream(bytes, 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, maybeLength); + DecodeStream.call(this); } 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(); - - // 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; - } - } - + if (this.colorTransform != -1) + jpegImage.colorTransform = this.colorTransform; jpegImage.parse(this.bytes); - var data = jpegImage.getData(this.drawWidth, this.drawHeight, - this.forceRGB); + var width = jpegImage.width; + var height = jpegImage.height; + var data = jpegImage.getData(width, height); this.buffer = data; this.bufferLength = data.length; this.eof = true; @@ -31944,12 +33280,6 @@ 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'); }; @@ -31958,7 +33288,7 @@ 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'; }; @@ -31966,10 +33296,10 @@ 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; @@ -31980,28 +33310,18 @@ var JpegStream = (function JpegStreamClosure() { * the stream behaves like all the other DecodeStreams. */ var JpxStream = (function JpxStreamClosure() { - function JpxStream(stream, maybeLength, dict) { - this.stream = stream; - this.maybeLength = maybeLength; + function JpxStream(bytes, dict) { this.dict = dict; + this.bytes = bytes; - DecodeStream.call(this, maybeLength); + DecodeStream.call(this); } 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); @@ -32009,35 +33329,75 @@ var JpxStream = (function JpxStreamClosure() { var width = jpxImage.width; var height = jpxImage.height; var componentsCount = jpxImage.componentsCount; - var tileCount = jpxImage.tiles.length; - if (tileCount === 1) { - this.buffer = jpxImage.tiles[0].items; - } else { - var data = new Uint8Array(width * height * componentsCount); + if (componentsCount != 1 && componentsCount != 3 && componentsCount != 4) + error('JPX with ' + componentsCount + ' components is not supported'); - 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; + var data = new Uint8Array(width * height * componentsCount); - var src = tileComponents.items; - var srcPosition = 0; - var dataPosition = (width * tileTop + tileLeft) * componentsCount; - var imgRowSize = width * componentsCount; - var tileRowSize = tileWidth * componentsCount; + 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; - for (var j = 0; j < tileHeight; j++) { - var rowBytes = src.subarray(srcPosition, srcPosition + tileRowSize); - data.set(rowBytes, dataPosition); - srcPosition += tileRowSize; - dataPosition += imgRowSize; - } + 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; } - this.buffer = data; } - this.bufferLength = this.buffer.length; + + this.buffer = data; + this.bufferLength = data.length; this.eof = true; }; @@ -32049,33 +33409,22 @@ var JpxStream = (function JpxStreamClosure() { * the stream behaves like all the other DecodeStreams. */ var Jbig2Stream = (function Jbig2StreamClosure() { - function Jbig2Stream(stream, maybeLength, dict) { - this.stream = stream; - this.maybeLength = maybeLength; + function Jbig2Stream(bytes, dict) { this.dict = dict; + this.bytes = bytes; - DecodeStream.call(this, maybeLength); + DecodeStream.call(this); } 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 = [], xref = this.dict.xref; - var decodeParams = xref.fetchIfRef(this.dict.get('DecodeParms')); + var chunks = [], decodeParams = this.dict.get('DecodeParms'); // According to the PDF specification, DecodeParms can be either // a dictionary, or an array whose elements are dictionaries. @@ -32084,7 +33433,7 @@ var Jbig2Stream = (function Jbig2StreamClosure() { warn('JBIG2 - \'DecodeParms\' array with multiple elements ' + 'not supported.'); } - decodeParams = xref.fetchIfRef(decodeParams[0]); + decodeParams = decodeParams[0]; } if (decodeParams && decodeParams.has('JBIG2Globals')) { var globalsStream = decodeParams.get('JBIG2Globals'); @@ -32096,9 +33445,8 @@ 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; @@ -32109,14 +33457,14 @@ var Jbig2Stream = (function Jbig2StreamClosure() { })(); var DecryptStream = (function DecryptStreamClosure() { - function DecryptStream(str, maybeLength, decrypt) { + function DecryptStream(str, decrypt) { this.str = str; this.dict = str.dict; this.decrypt = decrypt; this.nextChunk = null; this.initialized = false; - DecodeStream.call(this, maybeLength); + DecodeStream.call(this); } var chunkSize = 512; @@ -32144,9 +33492,8 @@ 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; }; @@ -32154,17 +33501,12 @@ var DecryptStream = (function DecryptStreamClosure() { })(); var Ascii85Stream = (function Ascii85StreamClosure() { - function Ascii85Stream(str, maybeLength) { + function Ascii85Stream(str) { this.str = str; this.dict = str.dict; this.input = new Uint8Array(5); - // Most streams increase in size when decoded, but Ascii85 streams - // typically shrink by ~20%. - if (maybeLength) { - maybeLength = 0.8 * maybeLength; - } - DecodeStream.call(this, maybeLength); + DecodeStream.call(this); } Ascii85Stream.prototype = Object.create(DecodeStream.prototype); @@ -32187,19 +33529,17 @@ 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 (i = 0; i < 4; ++i) { + for (var i = 0; i < 4; ++i) buffer[bufferLength + i] = 0; - } this.bufferLength += 4; } else { var input = this.input; input[0] = c; - for (i = 1; i < 5; ++i) { + for (var i = 1; i < 5; ++i) { c = str.getByte(); while (Lexer.isSpace(c)) { c = str.getByte(); @@ -32207,26 +33547,23 @@ 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 (i = 0; i < 5; ++i) { + for (var i = 0; i < 5; ++i) t = t * 85 + (input[i] - 0x21); - } - for (i = 3; i >= 0; --i) { + for (var i = 3; i >= 0; --i) { buffer[bufferLength + i] = t & 0xFF; t >>= 8; } @@ -32237,18 +33574,13 @@ var Ascii85Stream = (function Ascii85StreamClosure() { })(); var AsciiHexStream = (function AsciiHexStreamClosure() { - function AsciiHexStream(str, maybeLength) { + function AsciiHexStream(str) { this.str = str; this.dict = str.dict; this.firstDigit = -1; - // Most streams increase in size when decoded, but AsciiHex streams shrink - // by 50%. - if (maybeLength) { - maybeLength = 0.5 * maybeLength; - } - DecodeStream.call(this, maybeLength); + DecodeStream.call(this); } AsciiHexStream.prototype = Object.create(DecodeStream.prototype); @@ -32299,11 +33631,11 @@ var AsciiHexStream = (function AsciiHexStreamClosure() { })(); var RunLengthStream = (function RunLengthStreamClosure() { - function RunLengthStream(str, maybeLength) { + function RunLengthStream(str) { this.str = str; this.dict = str.dict; - DecodeStream.call(this, maybeLength); + DecodeStream.call(this); } RunLengthStream.prototype = Object.create(DecodeStream.prototype); @@ -32314,17 +33646,16 @@ 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 - buffer = this.ensureBuffer(bufferLength + n + 1); + var buffer = this.ensureBuffer(bufferLength + n + 1); buffer[bufferLength++] = repeatHeader[1]; if (n > 0) { var source = this.str.getBytes(n); @@ -32334,10 +33665,9 @@ var RunLengthStream = (function RunLengthStreamClosure() { } else { n = 257 - n; var b = repeatHeader[1]; - buffer = this.ensureBuffer(bufferLength + n + 1); - for (var i = 0; i < n; i++) { + var buffer = this.ensureBuffer(bufferLength + n + 1); + for (var i = 0; i < n; i++) buffer[bufferLength++] = b; - } } this.bufferLength = bufferLength; }; @@ -32773,11 +34103,11 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { [2, 2], [2, 2], [2, 2], [2, 2] ]; - function CCITTFaxStream(str, maybeLength, params) { + function CCITTFaxStream(str, params) { this.str = str; this.dict = str.dict; - params = params || Dict.empty; + params = params || new Dict(); this.encoding = params.get('K') || 0; this.eoline = params.get('EndOfLine') || false; @@ -32785,9 +34115,8 @@ 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; @@ -32802,12 +34131,13 @@ 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) { @@ -32815,7 +34145,7 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { this.eatBits(1); } - DecodeStream.call(this, maybeLength); + DecodeStream.call(this); } CCITTFaxStream.prototype = Object.create(DecodeStream.prototype); @@ -32823,13 +34153,14 @@ 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; @@ -32849,7 +34180,7 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { }; CCITTFaxStream.prototype.addPixelsNeg = - function ccittFaxStreamAddPixelsNeg(a1, blackPixels) { + function ccittFaxStreamAddPixelsNeg(a1, blackPixels) { var codingLine = this.codingLine; var codingPos = this.codingPos; @@ -32859,9 +34190,8 @@ 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]) { @@ -32870,9 +34200,8 @@ 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; } @@ -32880,23 +34209,26 @@ 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, i; + var refPos, blackPixels, bits; if (this.outputBits === 0) { - if (this.eof) { + if (this.eof) return null; - } + this.err = false; var code1, code2, code3; if (this.nextLine2D) { - for (i = 0; codingLine[i] < columns; ++i) { + for (var i = 0; codingLine[i] < columns; ++i) refLine[i] = codingLine[i]; - } + refLine[i++] = columns; refLine[i] = columns; codingLine[0] = 0; @@ -32909,9 +34241,8 @@ 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; @@ -32947,9 +34278,8 @@ 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: @@ -32969,9 +34299,8 @@ 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: @@ -32980,54 +34309,48 @@ 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: @@ -33060,54 +34383,45 @@ 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 if (this.eoline || !this.byteAlign) { + } else { 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); - } + 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 && this.byteAlign) { + if (this.eoblock && gotEOL) { 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 (i = 0; i < 4; ++i) { + for (var 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); @@ -33120,11 +34434,11 @@ 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); @@ -33136,17 +34450,15 @@ 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) { - c = (this.codingPos & 1) ? 0 : 0xFF; + this.buf = (this.codingPos & 1) ? 0 : 0xFF; this.outputBits -= 8; if (this.outputBits === 0 && codingLine[this.codingPos] < columns) { this.codingPos++; @@ -33154,20 +34466,20 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { codingLine[this.codingPos - 1]); } } else { - bits = 8; - c = 0; + var bits = 8; + this.buf = 0; do { if (this.outputBits > bits) { - c <<= bits; + this.buf <<= bits; if (!(this.codingPos & 1)) { - c |= 0xFF >> (8 - bits); + this.buf |= 0xFF >> (8 - bits); } this.outputBits -= bits; bits = 0; } else { - c <<= this.outputBits; + this.buf <<= this.outputBits; if (!(this.codingPos & 1)) { - c |= 0xFF >> (8 - this.outputBits); + this.buf |= 0xFF >> (8 - this.outputBits); } bits -= this.outputBits; this.outputBits = 0; @@ -33176,16 +34488,16 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { this.outputBits = (codingLine[this.codingPos] - codingLine[this.codingPos - 1]); } else if (bits > 0) { - c <<= bits; + this.buf <<= bits; bits = 0; } } } while (bits); } if (this.black) { - c ^= 0xFF; + this.buf ^= 0xFF; } - return c; + return this.buf; }; // This functions returns the code found from the table. @@ -33195,20 +34507,18 @@ 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]; } @@ -33218,7 +34528,7 @@ var CCITTFaxStream = (function CCITTFaxStreamClosure() { }; CCITTFaxStream.prototype.getTwoDimCode = - function ccittFaxStreamGetTwoDimCode() { + function ccittFaxStreamGetTwoDimCode() { var code = 0; var p; @@ -33231,30 +34541,28 @@ 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]); @@ -33262,14 +34570,12 @@ 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); @@ -33277,21 +34583,19 @@ 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]); @@ -33299,19 +34603,16 @@ 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); @@ -33322,9 +34623,8 @@ 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))); } @@ -33335,16 +34635,15 @@ 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, maybeLength, earlyChange) { + function LZWStream(str, earlyChange) { this.str = str; this.dict = str.dict; this.cachedData = 0; @@ -33367,7 +34666,7 @@ var LZWStream = (function LZWStreamClosure() { } this.lzwState = lzwState; - DecodeStream.call(this, maybeLength); + DecodeStream.call(this); } LZWStream.prototype = Object.create(DecodeStream.prototype); @@ -33396,9 +34695,8 @@ 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; @@ -33430,7 +34728,7 @@ var LZWStream = (function LZWStreamClosure() { } else { currentSequence[currentSequenceLength++] = currentSequence[0]; } - } else if (code === 256) { + } else if (code == 256) { codeLength = 9; nextCode = 258; currentSequenceLength = 0; @@ -33459,9 +34757,8 @@ 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; @@ -33490,66 +34787,76 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = { var pdfManager; function loadDocument(recoveryMode) { - var loadDocumentCapability = createPromiseCapability(); + var loadDocumentPromise = new LegacyPromise(); var parseSuccess = function parseSuccess() { - var numPagesPromise = pdfManager.ensureDoc('numPages'); - var fingerprintPromise = pdfManager.ensureDoc('fingerprint'); + 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 encryptedPromise = pdfManager.ensureXRef('encrypt'); - Promise.all([numPagesPromise, fingerprintPromise, - encryptedPromise]).then(function onDocReady(results) { + var javaScriptPromise = pdfManager.ensureCatalog('javaScript'); + Promise.all([numPagesPromise, fingerprintPromise, outlinePromise, + infoPromise, metadataPromise, encryptedPromise, + javaScriptPromise]).then( + function onDocReady(results) { + var doc = { numPages: results[0], fingerprint: results[1], - encrypted: !!results[2], + outline: results[2], + info: results[3], + metadata: results[4], + encrypted: !!results[5], + javaScript: results[6] }; - loadDocumentCapability.resolve(doc); + loadDocumentPromise.resolve(doc); }, parseFailure); }; var parseFailure = function parseFailure(e) { - loadDocumentCapability.reject(e); + loadDocumentPromise.reject(e); }; - pdfManager.ensureDoc('checkHeader', []).then(function() { - pdfManager.ensureDoc('parseStartXRef', []).then(function() { - pdfManager.ensureDoc('parse', [recoveryMode]).then( - parseSuccess, parseFailure); + pdfManager.ensureModel('checkHeader', []).then(function() { + pdfManager.ensureModel('parseStartXRef', []).then(function() { + pdfManager.ensureModel('parse', [recoveryMode]).then( + parseSuccess, parseFailure); }, parseFailure); }, parseFailure); - return loadDocumentCapability.promise; + return loadDocumentPromise; } function getPdfManager(data) { - var pdfManagerCapability = createPromiseCapability(); + var pdfManagerPromise = new LegacyPromise(); var source = data.source; var disableRange = data.disableRange; if (source.data) { try { pdfManager = new LocalPdfManager(source.data, source.password); - pdfManagerCapability.resolve(); + pdfManagerPromise.resolve(); } catch (ex) { - pdfManagerCapability.reject(ex); + pdfManagerPromise.reject(ex); } - return pdfManagerCapability.promise; + return pdfManagerPromise; } else if (source.chunkedViewerLoading) { try { pdfManager = new NetworkPdfManager(source, handler); - pdfManagerCapability.resolve(); + pdfManagerPromise.resolve(); } catch (ex) { - pdfManagerCapability.reject(ex); + pdfManagerPromise.reject(ex); } - return pdfManagerCapability.promise; + return pdfManagerPromise; } var networkManager = new NetworkManager(source.url, { httpHeaders: source.httpHeaders, withCredentials: source.withCredentials }); - var cachedChunks = []; var fullRequestXhrId = networkManager.requestFull({ onHeadersReceived: function onHeadersReceived() { if (disableRange) { @@ -33572,102 +34879,53 @@ 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); - pdfManagerCapability.resolve(pdfManager); + pdfManagerPromise.resolve(pdfManager); } catch (ex) { - pdfManagerCapability.reject(ex); + pdfManagerPromise.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(pdfFile, source.password); - pdfManagerCapability.resolve(); + pdfManager = new LocalPdfManager(args.chunk, source.password); + pdfManagerPromise.resolve(); } catch (ex) { - pdfManagerCapability.reject(ex); + pdfManagerPromise.reject(ex); } }, onError: function onError(status) { - var exception; - if (status === 404) { - exception = new MissingPDFException('Missing PDF "' + - source.url + '".'); - handler.send('MissingPDF', exception); + if (status == 404) { + var exception = new MissingPDFException( 'Missing PDF "' + + source.url + '".'); + handler.send('MissingPDF', { exception: exception }); } else { - exception = new UnexpectedResponseException( - 'Unexpected server response (' + status + - ') while retrieving PDF "' + source.url + '".', status); - handler.send('UnexpectedResponse', exception); + handler.send('DocError', 'Unexpected server response (' + + status + ') while retrieving PDF "' + + source.url + '".'); } }, onProgress: function onProgress(evt) { handler.send('DocProgress', { loaded: evt.loaded, - total: evt.lengthComputable ? evt.total : source.length + total: evt.lengthComputable ? evt.total : void(0) }); } }); - return pdfManagerCapability.promise; + return pdfManagerPromise; } handler.on('test', function wphSetupTest(data) { @@ -33707,19 +34965,26 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = { var onFailure = function(e) { if (e instanceof PasswordException) { if (e.code === PasswordResponses.NEED_PASSWORD) { - handler.send('NeedPassword', e); + handler.send('NeedPassword', { + exception: e + }); } else if (e.code === PasswordResponses.INCORRECT_PASSWORD) { - handler.send('IncorrectPassword', e); + handler.send('IncorrectPassword', { + exception: e + }); } } else if (e instanceof InvalidPDFException) { - handler.send('InvalidPDF', e); + handler.send('InvalidPDF', { + exception: e + }); } else if (e instanceof MissingPDFException) { - handler.send('MissingPDF', e); - } else if (e instanceof UnexpectedResponseException) { - handler.send('UnexpectedResponse', e); + handler.send('MissingPDF', { + exception: e + }); } else { - handler.send('UnknownError', - new UnknownErrorException(e.message, e.toString())); + handler.send('UnknownError', { + exception: new UnknownErrorException(e.message, e.toString()) + }); } }; @@ -33728,23 +34993,17 @@ 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 () { - handler.send('PDFManagerReady', null); - pdfManager.onLoadedStream().then(function(stream) { - handler.send('DataLoaded', { length: stream.bytes.byteLength }); - }); - }).then(function pdfManagerReady() { + getPdfManager(data).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.passwordChanged().then(pdfManagerReady); + pdfManager.passwordChangedPromise = + new LegacyPromise(); + pdfManager.passwordChangedPromise.then(pdfManagerReady); } onFailure(ex); @@ -33759,86 +35018,69 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = { }, onFailure); }); - handler.on('GetPage', function wphSetupGetPage(data) { - return pdfManager.getPage(data.pageIndex).then(function(page) { + handler.on('GetPageRequest', function wphSetupGetPage(data) { + var pageIndex = data.pageIndex; + pdfManager.getPage(pageIndex).then(function(page) { var rotatePromise = pdfManager.ensure(page, 'rotate'); var refPromise = pdfManager.ensure(page, 'ref'); var viewPromise = pdfManager.ensure(page, 'view'); - return Promise.all([rotatePromise, refPromise, viewPromise]).then( + Promise.all([rotatePromise, refPromise, viewPromise]).then( function(results) { - return { + var page = { + pageIndex: data.pageIndex, rotate: results[0], ref: results[1], view: results[2] }; + + handler.send('GetPage', { pageInfo: page }); }); }); }); - handler.on('GetPageIndex', function wphSetupGetPageIndex(data) { + handler.on('GetPageIndex', function wphSetupGetPageIndex(data, deferred) { var ref = new Ref(data.ref.num, data.ref.gen); - var catalog = pdfManager.pdfDocument.catalog; - return catalog.getPageIndex(ref); + pdfManager.pdfModel.catalog.getPageIndex(ref).then(function (pageIndex) { + deferred.resolve(pageIndex); + }, deferred.reject); }); handler.on('GetDestinations', - function wphSetupGetDestinations(data) { - return pdfManager.ensureCatalog('destinations'); + function wphSetupGetDestinations(data, deferred) { + pdfManager.ensureCatalog('destinations').then(function(destinations) { + deferred.resolve(destinations); + }); } ); - 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) { + handler.on('GetData', function wphSetupGetData(data, deferred) { pdfManager.requestLoadedStream(); - return pdfManager.onLoadedStream().then(function(stream) { - return stream.bytes; + pdfManager.onLoadedStream().then(function(stream) { + deferred.resolve(stream.bytes); }); }); - handler.on('GetStats', - function wphSetupGetStats(data) { - return pdfManager.pdfDocument.xref.stats; - } - ); + handler.on('DataLoaded', function wphSetupDataLoaded(data, deferred) { + pdfManager.onLoadedStream().then(function(stream) { + deferred.resolve({ length: stream.bytes.byteLength }); + }); + }); handler.on('UpdatePassword', function wphSetupUpdatePassword(data) { pdfManager.updatePassword(data); }); - handler.on('GetAnnotations', function wphSetupGetAnnotations(data) { - return pdfManager.getPage(data.pageIndex).then(function(page) { - return pdfManager.ensure(page, 'getAnnotationsData', []); + 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 + }); + } + ); }); }); @@ -33848,15 +35090,15 @@ 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, data.intent).then(function(operatorList) { + page.getOperatorList(handler).then(function(operatorList) { - info('page=' + pageNum + ' - getOperatorList: time=' + - (Date.now() - start) + 'ms, len=' + operatorList.fnArray.length); + info('page=%d - getOperatorList: time=%dms, len=%d', pageNum, + Date.now() - start, 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; @@ -33880,31 +35122,35 @@ var WorkerMessageHandler = PDFJS.WorkerMessageHandler = { handler.send('PageError', { pageNum: pageNum, - error: wrappedException, - intent: data.intent + error: wrappedException }); }); }); }, this); - handler.on('GetTextContent', function wphExtractText(data) { - return pdfManager.getPage(data.pageIndex).then(function(page) { + handler.on('GetTextContent', function wphExtractText(data, deferred) { + pdfManager.getPage(data.pageIndex).then(function(page) { var pageNum = data.pageIndex + 1; var start = Date.now(); - return page.extractTextContent().then(function(textContent) { - info('text indexing: page=' + pageNum + ' - time=' + - (Date.now() - start) + 'ms'); - return textContent; + 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); }); }); }); - handler.on('Cleanup', function wphCleanup(data) { - return pdfManager.cleanup(); + handler.on('Cleanup', function wphCleanup(data, deferred) { + pdfManager.cleanup(); + deferred.resolve(true); }); - handler.on('Terminate', function wphTerminate(data) { + handler.on('Terminate', function wphTerminate(data, deferred) { pdfManager.terminate(); + deferred.resolve(); }); } }; @@ -33962,1188 +35208,6 @@ 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 = { @@ -35156,125 +35220,70 @@ 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) { - - var head = readUint16(data, 0); - // No box header, immediate start of codestream (SOC) - if (head === 0xFF4F) { - this.parseCodestream(data, 0, data.length); - return; + 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 position = 0, length = data.length; while (position < length) { var headerSize = 8; - var lbox = readUint32(data, position); - var tbox = readUint32(data, position + 4); + var lbox = readUint(data, position, 4); + var tbox = readUint(data, position + 4, 4); position += headerSize; - 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); + if (lbox == 1) { + lbox = readUint(data, position, 8); position += 8; headerSize += 8; } - if (lbox === 0) { + if (lbox === 0) lbox = length - position + headerSize; - } - if (lbox < headerSize) { - throw new Error('JPX Error: Invalid box field size'); - } + if (lbox < headerSize) + 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' - // 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'); - } + // TODO 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 + 1 < end) { + while (position < end) { var code = readUint16(data, position); position += 2; - var length = 0, j, sqcd, spqcds, spqcdSize, scalarExpounded, tile; + var length = 0, j; switch (code) { case 0xFF4F: // Start of codestream (SOC) context.mainHeader = true; @@ -35312,16 +35321,12 @@ 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; - sqcd = data[j++]; + var sqcd = data[j++]; + var spqcdSize, scalarExpounded; switch (sqcd & 0x1F) { case 0: spqcdSize = 8; @@ -35336,15 +35341,15 @@ var JpxImage = (function JpxImageClosure() { scalarExpounded = true; break; default: - throw new Error('JPX Error: Invalid SQcd value ' + sqcd); + throw 'Invalid SQcd value ' + sqcd; } - qcd.noQuantization = (spqcdSize === 8); + qcd.noQuantization = spqcdSize == 8; qcd.scalarExpounded = scalarExpounded; qcd.guardBits = sqcd >> 5; - spqcds = []; + var spqcds = []; while (j < length + position) { var spqcd = {}; - if (spqcdSize === 8) { + if (spqcdSize == 8) { spqcd.epsilon = data[j++] >> 3; spqcd.mu = 0; } else { @@ -35355,9 +35360,9 @@ 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 = []; } @@ -35367,13 +35372,14 @@ 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; } - sqcd = data[j++]; + var sqcd = data[j++]; + var spqcdSize, scalarExpounded; switch (sqcd & 0x1F) { case 0: spqcdSize = 8; @@ -35388,15 +35394,15 @@ var JpxImage = (function JpxImageClosure() { scalarExpounded = true; break; default: - throw new Error('JPX Error: Invalid SQcd value ' + sqcd); + throw 'Invalid SQcd value ' + sqcd; } - qcc.noQuantization = (spqcdSize === 8); + qcc.noQuantization = spqcdSize == 8; qcc.scalarExpounded = scalarExpounded; qcc.guardBits = sqcd >> 5; - spqcds = []; - while (j < (length + position)) { - spqcd = {}; - if (spqcdSize === 8) { + var spqcds = []; + while (j < length + position) { + var spqcd = {}; + if (spqcdSize == 8) { spqcd.epsilon = data[j++] >> 3; spqcd.mu = 0; } else { @@ -35407,11 +35413,10 @@ 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); @@ -35421,6 +35426,7 @@ 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; @@ -35436,11 +35442,11 @@ var JpxImage = (function JpxImageClosure() { cod.verticalyStripe = !!(blockStyle & 8); cod.predictableTermination = !!(blockStyle & 16); cod.segmentationSymbolUsed = !!(blockStyle & 32); - cod.reversibleTransformation = data[j++]; + cod.transformation = 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 @@ -35448,43 +35454,25 @@ var JpxImage = (function JpxImageClosure() { } cod.precinctsSizes = precinctsSizes; } - 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) { + + 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) context.COD = cod; - } else { + else { context.currentTile.COD = cod; context.currentTile.COC = []; } break; case 0xFF90: // Start of tile-part (SOT) length = readUint16(data, position); - tile = {}; + var tile = {}; tile.index = readUint16(data, position + 2); tile.length = readUint32(data, position + 4); tile.dataEnd = tile.length + position - 2; @@ -35502,7 +35490,7 @@ var JpxImage = (function JpxImageClosure() { context.currentTile = tile; break; case 0xFF93: // Start of data (SOD) - tile = context.currentTile; + var tile = context.currentTile; if (tile.partIndex === 0) { initializeTile(context, tile.index); buildPackets(context); @@ -35510,27 +35498,23 @@ 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 new Error('JPX Error: Unknown codestream code: ' + - code.toString(16)); + throw 'Unknown codestream code: ' + code.toString(16); } position += length; } } catch (e) { - if (doNotRecover || this.failOnCorruptedImage) { - throw e; - } else { - warn('Trying to recover from ' + e.message); - } + if (this.failOnCorruptedImage) + error('JPX error: ' + e); + else + warn('JPX error: ' + e + '. Trying to recover'); } this.tiles = transformComponents(context); this.width = context.SIZ.Xsiz - context.SIZ.XOsiz; @@ -35538,6 +35522,21 @@ 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); @@ -35550,12 +35549,12 @@ var JpxImage = (function JpxImageClosure() { function calculateTileGrids(context, components) { var siz = context.SIZ; // Section B.3 Division into tile and tile-components - var tile, tiles = []; + var 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++) { - tile = {}; + var 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); @@ -35571,9 +35570,9 @@ 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); @@ -35595,27 +35594,27 @@ 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, @@ -35632,17 +35631,16 @@ var JpxImage = (function JpxImageClosure() { var ycb_ = dimensions.ycb_; var codeblockWidth = 1 << xcb_; var codeblockHeight = 1 << ycb_; - 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 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 precinctParameters = subband.resolution.precinctParameters; var codeblocks = []; var precincts = []; - var i, j, codeblock, precinctNumber; - for (j = cby0; j < cby1; j++) { - for (i = cbx0; i < cbx1; i++) { - codeblock = { + for (var j = cby0; j < cby1; j++) { + for (var i = cbx0; i < cbx1; i++) { + var codeblock = { cbx: i, cby: j, tbx0: codeblockWidth * i, @@ -35652,38 +35650,31 @@ 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); - precinctNumber = pj + pi * precinctParameters.numprecinctswide; + precinctParameters.precinctYOffset) / + precinctParameters.precinctHeight); + var 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 = 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; - } + 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); } else { precincts[precinctNumber] = precinct = { cbxMin: i, @@ -35699,9 +35690,13 @@ var JpxImage = (function JpxImageClosure() { codeblockWidth: xcb_, codeblockHeight: ycb_, numcodeblockwide: cbx1 - cbx0 + 1, - numcodeblockhigh: cby1 - cby0 + 1 + numcodeblockhigh: cby1 - cby1 + 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) { @@ -35714,9 +35709,8 @@ 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); } } @@ -35745,9 +35739,8 @@ 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; @@ -35762,7 +35755,7 @@ var JpxImage = (function JpxImageClosure() { } r = 0; } - throw new Error('JPX Error: Out of packets'); + throw 'Out of packets'; }; } function ResolutionLayerComponentPositionIterator(context) { @@ -35785,9 +35778,8 @@ 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; @@ -35802,7 +35794,7 @@ var JpxImage = (function JpxImageClosure() { } l = 0; } - throw new Error('JPX Error: Out of packets'); + throw 'Out of packets'; }; } function buildPackets(context) { @@ -35887,6 +35879,7 @@ var JpxImage = (function JpxImageClosure() { } // Generate the packets sequence var progressionOrder = tile.codingStyleDefaultParameters.progressionOrder; + var packetsIterator; switch (progressionOrder) { case 0: tile.packetsIterator = @@ -35897,8 +35890,7 @@ var JpxImage = (function JpxImageClosure() { new ResolutionLayerComponentPositionIterator(context); break; default: - throw new Error('JPX Error: Unsupported progression order ' + - progressionOrder); + throw 'Unsupported progression order ' + progressionOrder; } } function parseTilePackets(context, data, offset, dataLength) { @@ -35916,7 +35908,7 @@ var JpxImage = (function JpxImageClosure() { buffer = (buffer << 8) | b; bufferSize += 8; } - if (b === 0xFF) { + if (b == 0xFF) { skipNextBit = true; } } @@ -35931,49 +35923,46 @@ var JpxImage = (function JpxImageClosure() { } } function readCodingpasses() { - if (readBits(1) === 0) { + var value = readBits(1); + if (value === 0) return 1; - } - if (readBits(1) === 0) { + value = (value << 1) | readBits(1); + if (value == 0x02) return 2; - } - 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; + 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 tileIndex = context.currentTile.index; var tile = context.tiles[tileIndex]; var packetsIterator = tile.packetsIterator; while (position < dataLength) { - alignToByte(); + var packet = packetsIterator.nextPacket(); if (!readBits(1)) { + alignToByte(); continue; } - var packet = packetsIterator.nextPacket(); var layerNumber = packet.layerNumber; - var queue = [], codeblock; + var queue = []; for (var i = 0, ii = packet.codeblocks.length; i < ii; i++) { - codeblock = packet.codeblocks[i]; + var 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; - var valueReady; - if (codeblock['included'] !== undefined) { + if ('included' in codeblock) { codeblockIncluded = !!readBits(1); } else { // reading inclusion tree - precinct = codeblock.precinct; + var precinct = codeblock.precinct; var inclusionTree, zeroBitPlanesTree; - if (precinct['inclusionTree'] !== undefined) { + if ('inclusionTree' in precinct) { inclusionTree = precinct.inclusionTree; } else { // building inclusion and zero bit-planes trees @@ -35988,7 +35977,7 @@ var JpxImage = (function JpxImageClosure() { if (inclusionTree.reset(codeblockColumn, codeblockRow, layerNumber)) { while (true) { if (readBits(1)) { - valueReady = !inclusionTree.nextLevel(); + var valueReady = !inclusionTree.nextLevel(); if (valueReady) { codeblock.included = true; codeblockIncluded = firstTimeInclusion = true; @@ -36001,28 +35990,24 @@ var JpxImage = (function JpxImageClosure() { } } } - if (!codeblockIncluded) { + if (!codeblockIncluded) continue; - } if (firstTimeInclusion) { zeroBitPlanesTree = precinct.zeroBitPlanesTree; zeroBitPlanesTree.reset(codeblockColumn, codeblockRow); while (true) { if (readBits(1)) { - valueReady = !zeroBitPlanesTree.nextLevel(); - if (valueReady) { + var 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)) ? @@ -36037,10 +36022,9 @@ var JpxImage = (function JpxImageClosure() { alignToByte(); while (queue.length > 0) { var packetItem = queue.shift(); - codeblock = packetItem.codeblock; - if (codeblock['data'] === undefined) { + var codeblock = packetItem.codeblock; + if (!('data' in codeblock)) codeblock.data = []; - } codeblock.data.push({ data: data, start: offset + position, @@ -36052,52 +36036,43 @@ var JpxImage = (function JpxImageClosure() { } return position; } - 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; - + function copyCoefficients(coefficients, x0, y0, width, height, + delta, mb, codeblocks, transformation, + segmentationSymbolUsed) { + var r = 0.5; // formula (E-6) 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 (codeblock['data'] === undefined) { + if (!('data' in codeblock)) continue; - } var bitModel, currentCodingpassType; bitModel = new BitModel(blockWidth, blockHeight, codeblock.subbandType, - codeblock.zeroBitPlanes, mb); + codeblock.zeroBitPlanes); currentCodingpassType = 2; // first bit plane starts from cleanup // collect data var data = codeblock.data, totalLength = 0, codingpasses = 0; - var j, jj, dataItem; - for (j = 0, jj = data.length; j < jj; j++) { - dataItem = data[j]; + for (var q = 0, qq = data.length; q < qq; q++) { + var dataItem = data[q]; totalLength += dataItem.end - dataItem.start; codingpasses += dataItem.codingpasses; } - var encodedData = new Uint8Array(totalLength); - var position = 0; - for (j = 0, jj = data.length; j < jj; j++) { - dataItem = data[j]; + var encodedData = new Uint8Array(totalLength), k = 0; + for (var q = 0, qq = data.length; q < qq; q++) { + var dataItem = data[q]; var chunk = dataItem.data.subarray(dataItem.start, dataItem.end); - encodedData.set(chunk, position); - position += chunk.length; + encodedData.set(chunk, k); + k += chunk.length; } // decoding the item var decoder = new ArithmeticDecoder(encodedData, 0, totalLength); bitModel.setDecoder(decoder); - for (j = 0; j < codingpasses; j++) { + for (var q = 0; q < codingpasses; q++) { switch (currentCodingpassType) { case 0: bitModel.runSignificancePropogationPass(); @@ -36107,43 +36082,28 @@ 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 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++; + 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; position++; } offset += width - blockWidth; @@ -36159,23 +36119,15 @@ 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 b = 0; + var k = 0, 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) { @@ -36185,34 +36137,38 @@ 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 = (reversible ? 1 : - Math.pow(2, precision + gainLog2 - epsilon) * (1 + mu / 2048)); + var delta = Math.pow(2, (precision + gainLog2) - epsilon) * + (1 + mu / 2048); var mb = (guardBits + epsilon - 1); - // 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); + 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++; } - 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, @@ -36228,91 +36184,54 @@ var JpxImage = (function JpxImageClosure() { var resultImages = []; for (var i = 0, ii = context.tiles.length; i < ii; i++) { var tile = context.tiles[i]; - var transformedTiles = []; - var c; - for (c = 0; c < componentsCount; c++) { - transformedTiles[c] = transformTile(context, tile, c); + var result = []; + for (var c = 0; c < componentsCount; c++) { + var image = transformTile(context, tile, c); + result.push(image); } - 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 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; - } + 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; } } + + // 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; @@ -36321,13 +36240,14 @@ 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 = (context.currentTile.QCC[c] !== undefined ? - context.currentTile.QCC[c] : context.currentTile.QCD); + var qcdOrQcc = c in context.currentTile.QCC ? + context.currentTile.QCC[c] : context.currentTile.QCD; component.quantizationParameters = qcdOrQcc; - var codOrCoc = (context.currentTile.COC[c] !== undefined ? - context.currentTile.COC[c] : context.currentTile.COD); + var codOrCoc = c in context.currentTile.COC ? + context.currentTile.COC[c] : context.currentTile.COD; component.codingStyleParameters = codOrCoc; } tile.codingStyleDefaultParameters = context.currentTile.COD; @@ -36351,11 +36271,11 @@ var JpxImage = (function JpxImageClosure() { } TagTree.prototype = { reset: function TagTree_reset(i, j) { - var currentLevel = 0, value = 0, level; + var currentLevel = 0, value = 0; while (currentLevel < this.levels.length) { - level = this.levels[currentLevel]; + var level = this.levels[currentLevel]; var index = i + j * level.width; - if (level.items[index] !== undefined) { + if (index in level.items) { value = level.items[index]; break; } @@ -36365,7 +36285,7 @@ var JpxImage = (function JpxImageClosure() { currentLevel++; } currentLevel--; - level = this.levels[currentLevel]; + var level = this.levels[currentLevel]; level.items[level.index] = value; this.currentLevel = currentLevel; delete this.value; @@ -36385,7 +36305,7 @@ var JpxImage = (function JpxImageClosure() { } this.currentLevel = currentLevel; - level = this.levels[currentLevel]; + var level = this.levels[currentLevel]; level.items[level.index] = value; return true; } @@ -36399,9 +36319,8 @@ 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, @@ -36423,9 +36342,8 @@ 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; @@ -36451,7 +36369,7 @@ var JpxImage = (function JpxImageClosure() { var level = this.levels[levelIndex]; var currentValue = level.items[level.index]; while (--levelIndex >= 0) { - level = this.levels[levelIndex]; + var level = this.levels[levelIndex]; level.items[level.index] = currentValue; } }, @@ -36461,12 +36379,11 @@ 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; - level = this.levels[currentLevel]; + var level = this.levels[currentLevel]; level.items[level.index] = value; return true; } @@ -36474,10 +36391,171 @@ 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) @@ -36497,12 +36575,35 @@ 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 ]); - function BitModel(width, height, subband, zeroBitPlanes, mb) { + // 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) { 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; @@ -36510,17 +36611,12 @@ var JpxImage = (function JpxImageClosure() { // add border state cells for significanceState this.neighborsSignificance = new Uint8Array(coefficientCount); this.coefficentsSign = new Uint8Array(coefficientCount); - this.coefficentsMagnitude = mb > 14 ? new Uint32Array(coefficientCount) : - mb > 6 ? new Uint16Array(coefficientCount) : - new Uint8Array(coefficientCount); + this.coefficentsMagnitude = new Uint32Array(coefficientCount); this.processingFlags = new Uint8Array(coefficientCount); - var bitsDecoded = new Uint8Array(coefficientCount); - if (zeroBitPlanes !== 0) { - for (var i = 0; i < coefficientCount; i++) { - bitsDecoded[i] = zeroBitPlanes; - } - } + var bitsDecoded = new Uint8Array(this.width * this.height); + for (var i = 0, ii = bitsDecoded.length; i < ii; i++) + bitsDecoded[i] = zeroBitPlanes; this.bitsDecoded = bitsDecoded; this.reset(); @@ -36531,52 +36627,36 @@ var JpxImage = (function JpxImageClosure() { this.decoder = decoder; }, reset: function BitModel_reset() { - // 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; + 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}); }, setNeighborsSignificance: - function BitModel_setNeighborsSignificance(row, column, index) { + function BitModel_setNeighborsSignificance(row, column) { var neighborsSignificance = this.neighborsSignificance; var width = this.width, height = this.height; - var left = (column > 0); - var right = (column + 1 < width); - var i; - + var index = row * width + column; if (row > 0) { - i = index - width; - if (left) { - neighborsSignificance[i - 1] += 0x10; - } - if (right) { - neighborsSignificance[i + 1] += 0x10; - } - neighborsSignificance[i] += 0x04; + if (column > 0) + neighborsSignificance[index - width - 1] += 0x10; + if (column + 1 < width) + neighborsSignificance[index - width + 1] += 0x10; + neighborsSignificance[index - width] += 0x04; } - if (row + 1 < height) { - i = index + width; - if (left) { - neighborsSignificance[i - 1] += 0x10; - } - if (right) { - neighborsSignificance[i + 1] += 0x10; - } - neighborsSignificance[i] += 0x04; + if (column > 0) + neighborsSignificance[index + width - 1] += 0x10; + if (column + 1 < width) + neighborsSignificance[index + width + 1] += 0x10; + neighborsSignificance[index + width] += 0x04; } - - if (left) { + if (column > 0) neighborsSignificance[index - 1] += 0x01; - } - if (right) { + if (column + 1 < width) neighborsSignificance[index + 1] += 0x01; - } neighborsSignificance[index] |= 0x80; }, runSignificancePropogationPass: @@ -36585,38 +36665,38 @@ 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 decision = decoder.readBit(contexts, contextLabel); + var cx = contexts[contextLabel]; + var decision = decoder.readBit(cx); if (decision) { - var sign = this.decodeSignBit(i, j, index); + var sign = this.decodeSignBit(i, j); coefficentsSign[index] = sign; coefficentsMagnitude[index] = 1; - this.setNeighborsSignificance(i, j, index); + this.setNeighborsSignificance(i, j); processingFlags[index] |= firstMagnitudeBitMask; } bitsDecoded[index]++; @@ -36625,56 +36705,28 @@ var JpxImage = (function JpxImageClosure() { } } }, - decodeSignBit: function BitModel_decodeSignBit(row, column, index) { + decodeSignBit: function BitModel_decodeSignBit(row, column) { var width = this.width, height = this.height; + var index = row * width + column; var coefficentsMagnitude = this.coefficentsMagnitude; var coefficentsSign = this.coefficentsSign; - var contribution, sign0, sign1, significance1; - var contextLabel, decoded; + 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]); - // 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; + 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; }, runMagnitudeRefinementPass: function BitModel_runMagnitudeRefinementPass() { @@ -36687,29 +36739,32 @@ var JpxImage = (function JpxImageClosure() { var processingFlags = this.processingFlags; var processedMask = 1; var firstMagnitudeBitMask = 2; - 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 i0 = 0; i0 < height; i0 += 4) { for (var j = 0; j < width; j++) { - for (var index = index0 + j; index < indexNext; index += width) { + for (var i1 = 0; i1 < 4; i1++) { + var i = i0 + i1; + if (i >= height) + break; + var index = i * width + j; // 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[index] ^= firstMagnitudeBitMask; + if ((processingFlags[index] & + firstMagnitudeBitMask) !== 0) { + processingFlags[i * width + j] ^= firstMagnitudeBitMask; // first refinement - var significance = neighborsSignificance[index] & 127; - contextLabel = significance === 0 ? 15 : 14; + var significance = neighborsSignificance[index]; + var sumOfSignificance = (significance & 3) + + ((significance >> 2) & 3) + ((significance >> 4) & 7); + contextLabel = sumOfSignificance >= 1 ? 15 : 14; } - var bit = decoder.readBit(contexts, contextLabel); + var cx = contexts[contextLabel]; + var bit = decoder.readBit(cx); coefficentsMagnitude[index] = (coefficentsMagnitude[index] << 1) | bit; bitsDecoded[index]++; @@ -36722,6 +36777,7 @@ 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; @@ -36733,16 +36789,12 @@ var JpxImage = (function JpxImageClosure() { var oneRowDown = width; var twoRowsDown = width * 2; var threeRowsDown = width * 3; - 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 i0 = 0; i0 < height; i0 += 4) { for (var j = 0; j < width; j++) { - var index0 = indexBase + j; - // using the property: labels[neighborsSignificance[index]] === 0 - // when neighborsSignificance[index] === 0 - var allEmpty = (checkAllEmpty && + var index0 = i0 * width + j; + // using the property: labels[neighborsSignificance[index]] == 0 + // when neighborsSignificance[index] == 0 + var allEmpty = i0 + 3 < height && processingFlags[index0] === 0 && processingFlags[index0 + oneRowDown] === 0 && processingFlags[index0 + twoRowsDown] === 0 && @@ -36750,12 +36802,12 @@ 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 i = i0, sign; + var cx, i; if (allEmpty) { - var hasSignificantCoefficent = - decoder.readBit(contexts, RUNLENGTH_CONTEXT); + cx = this.runLengthContext; + var hasSignificantCoefficent = decoder.readBit(cx); if (!hasSignificantCoefficent) { bitsDecoded[index0]++; bitsDecoded[index0 + oneRowDown]++; @@ -36763,39 +36815,40 @@ var JpxImage = (function JpxImageClosure() { bitsDecoded[index0 + threeRowsDown]++; continue; // next column } - i1 = (decoder.readBit(contexts, UNIFORM_CONTEXT) << 1) | - decoder.readBit(contexts, UNIFORM_CONTEXT); - if (i1 !== 0) { - i = i0 + i1; - index += i1 * width; - } + cx = this.uniformContext; + i1 = (decoder.readBit(cx) << 1) | decoder.readBit(cx); + i = i0 + i1; + index += i1 * width; - sign = this.decodeSignBit(i, j, index); + var sign = this.decodeSignBit(i, j); coefficentsSign[index] = sign; coefficentsMagnitude[index] = 1; - this.setNeighborsSignificance(i, j, index); + this.setNeighborsSignificance(i, j); 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 (i = i0 + i1; i < iNext; i++, index += width) { + for (; i1 < 4; i1++, index += width) { + i = i0 + i1; + if (i >= height) + break; + if (coefficentsMagnitude[index] || - (processingFlags[index] & processedMask) !== 0) { + (processingFlags[index] & processedMask) !== 0) continue; - } var contextLabel = labels[neighborsSignificance[index]]; - var decision = decoder.readBit(contexts, contextLabel); - if (decision === 1) { - sign = this.decodeSignBit(i, j, index); + cx = contexts[contextLabel]; + var decision = decoder.readBit(cx); + if (decision == 1) { + var sign = this.decodeSignBit(i, j); coefficentsSign[index] = sign; coefficentsMagnitude[index] = 1; - this.setNeighborsSignificance(i, j, index); + this.setNeighborsSignificance(i, j); processingFlags[index] |= firstMagnitudeBitMask; } bitsDecoded[index]++; @@ -36805,139 +36858,128 @@ var JpxImage = (function JpxImageClosure() { }, checkSegmentationSymbol: function BitModel_checkSegmentationSymbol() { var decoder = this.decoder; - 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'); - } + 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'; } }; return BitModel; })(); - // Section F, Discrete wavelet transformation + // Section F, Discrete wavelet transofrmation 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; i < ii; i++) { - ll = this.iterate(ll, subbands[i], u0, v0); + 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); } return ll; }; - 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.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.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 width = hl_lh_hh.width; - var height = hl_lh_hh.height; - var items = hl_lh_hh.items; - var i, j, k, l, u, v; + 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; - // 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) { + // 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) items[l] = llItems[k]; - } } - // The LL band is not needed anymore. - llItems = ll.items = null; + 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]; + } var bufferPadding = 4; - var rowBuffer = new Float32Array(width + 2 * bufferPadding); + var bufferLength = new Float32Array(Math.max(width, height) + + 2 * bufferPadding); + var buffer = new Float32Array(bufferLength); + var bufferOut = new Float32Array(bufferLength); // Section F.3.4 HOR_SR - 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; + 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; } + continue; } - } else { - for (v = 0, k = 0; v < height; v++, k += width) { - rowBuffer.set(items.subarray(k, k + width), bufferPadding); - this.extend(rowBuffer, bufferPadding, width); - this.filter(rowBuffer, bufferPadding, width); + var k = v * width; + var l = bufferPadding; + for (var u = 0; u < width; u++, k++, l++) + buffer[l] = items[k]; - items.set( - rowBuffer.subarray(bufferPadding, bufferPadding + width), - k); - } + 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]; } - // 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 - if (height === 1) { + for (var u = 0; u < width; u++) { + if (height == 1) { // if height = 1, when v0 even keep items as is, when odd divide by 2 - if ((v0 & 1) !== 0) { - for (u = 0; u < width; u++) { - items[u] *= 0.5; + if ((v0 % 1) !== 0) { + items[u] /= 2; } + 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; - } - currentBuffer--; - var buffer = colBuffers[currentBuffer]; - this.extend(buffer, bufferPadding, height); - this.filter(buffer, bufferPadding, height); + var k = u; + var l = bufferPadding; + for (var v = 0; v < height; v++, k += width, l++) + buffer[l] = items[k]; - // 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]; - } - } - } - } + 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]; } - return { width: width, height: height, @@ -36955,10 +36997,10 @@ var JpxImage = (function JpxImageClosure() { IrreversibleTransform.prototype = Object.create(Transform.prototype); IrreversibleTransform.prototype.filter = - function irreversibleTransformFilter(x, offset, length) { - var len = length >> 1; - offset = offset | 0; - var j, n, current, next; + 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); var alpha = -1.586134342059924; var beta = -0.052980118572961; @@ -36967,75 +37009,35 @@ var JpxImage = (function JpxImageClosure() { var K = 1.230174104914001; var K_ = 1 / K; - // step 1 is combined with step 3 + // 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 2 - j = offset - 3; - for (n = len + 4; n--; j += 2) { - x[j] *= K_; - } + var j = offset_ - 3; + for (var n = i0_ - 2, nn = i1_ + 2; n < nn; n++, j += 2) + x[j] = K_ * y[j]; - // 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 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 4 - 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; - } - } + 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]); // step 5 - 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; - } - } + var j = offset_; + for (var n = i0_, nn = i1_ + 1; n < nn; n++, j += 2) + x[j] -= beta * (x[j - 1] + x[j + 1]); // step 6 - 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; - } - } - } + var j = offset_ + 1; + for (var n = i0_, nn = i1_; n < nn; n++, j += 2) + x[j] -= alpha * (x[j - 1] + x[j + 1]); }; return IrreversibleTransform; @@ -37049,18 +37051,16 @@ var JpxImage = (function JpxImageClosure() { ReversibleTransform.prototype = Object.create(Transform.prototype); ReversibleTransform.prototype.filter = - function reversibleTransformFilter(x, offset, length) { - var len = length >> 1; - offset = offset | 0; - var j, n; + 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); - 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_ + 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 + 1, n = len; n--; j += 2) { - x[j] += (x[j - 1] + x[j + 1]) >> 1; - } + 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); }; return ReversibleTransform; @@ -37072,15 +37072,171 @@ 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)); } }; @@ -37105,32 +37261,58 @@ var Jbig2Image = (function Jbig2ImageClosure() { // A.2 Procedure for decoding values function decodeInteger(contextCache, procedure, decoder) { var contexts = contextCache.getContexts(procedure); + var prev = 1; - - 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; + 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; } - return v >>> 0; + state++; } - - 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)); + v += offset; + return !s ? v : v > 0 ? -v : null; } // A.3 The IAID decoding procedure @@ -37140,12 +37322,12 @@ var Jbig2Image = (function Jbig2ImageClosure() { var prev = 1; for (var i = 0; i < codeLength; i++) { var bit = decoder.readBit(contexts, prev); - prev = (prev << 1) | bit; + prev = (prev * 2) + bit; } - if (codeLength < 31) { + if (codeLength < 31) return prev & ((1 << codeLength) - 1); - } - return prev & 0x7FFFFFFF; + else + return prev - Math.pow(2, codeLength); } // 7.3 Segment types @@ -37192,12 +37374,11 @@ var Jbig2Image = (function Jbig2ImageClosure() { } ]; - // See 6.2.5.7 Decoding the bitmap. var ReusedContexts = [ - 0x9B25, // 10011 0110010 0101 - 0x0795, // 0011 110010 101 - 0x00E5, // 001 11001 01 - 0x0195 // 011001 0101 + 0x1CD3, // '00111001101' (template) + '0011' (at), + 0x079A, // '001111001101' + '0', + 0x00E3, // '001110001' + '1', + 0x018B // '011000101' + '1' ]; var RefinementReusedContexts = [ @@ -37205,162 +37386,79 @@ var Jbig2Image = (function Jbig2ImageClosure() { 0x0008 // '0000' + '001000' ]; - 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; - } + function log2(x) { + var n = 1, i = 0; + while (x > n) { + n <<= 1; + i++; } + return i; + } - return bitmap; + 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; } // 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 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++) { + var templateX = new Int32Array(templateLength); + var templateY = new Int32Array(templateLength); + for (var 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, j, i0, j0, contextLabel = 0, bit, shift; + var ltp = 0; 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; - } } - row = new Uint8Array(row); + if (ltp) { + bitmap.push(bitmap[bitmap.length - 1]); // duplicate previous row + continue; + } + var row = new Uint8Array(width); bitmap.push(row); - for (j = 0; j < width; j++) { + for (var j = 0; j < width; j++) { if (useskip && skip[i][j]) { row[j] = 0; continue; } - // 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 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]; } var pixel = decoder.readBit(contexts, contextLabel); row[j] = pixel; @@ -37374,26 +37472,22 @@ 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); - var k; - for (k = 0; k < codingTemplateLength; k++) { + for (var 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 (k = 0; k < referenceTemplateLength; k++) { + for (var k = 0; k < referenceTemplateLength; k++) { referenceTemplateX[k] = referenceTemplate[k].x; referenceTemplateY[k] = referenceTemplate[k].y; } @@ -37411,33 +37505,28 @@ 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++) { - var i0, j0; + if (ltp) + error('JBIG2 error: prediction is not supported'); + var contextLabel = 0; - for (k = 0; k < codingTemplateLength; k++) { - i0 = i + codingTemplateY[k]; - j0 = j + codingTemplateX[k]; - if (i0 < 0 || j0 < 0 || j0 >= width) { + for (var k = 0; k < codingTemplateLength; k++) { + var 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 (k = 0; k < referenceTemplateLength; k++) { - i0 = i + referenceTemplateY[k] + offsetY; - j0 = j + referenceTemplateX[k] + offsetX; - if (i0 < 0 || i0 >= referenceHeight || j0 < 0 || - j0 >= referenceWidth) { + 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) contextLabel <<= 1; // out of bound pixel - } else { + else contextLabel = (contextLabel << 1) | referenceBitmap[i0][j0]; - } } var pixel = decoder.readBit(contexts, contextLabel); row[j] = pixel; @@ -37453,9 +37542,8 @@ 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; @@ -37471,38 +37559,24 @@ 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) { - 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, + 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, refinementTemplateIndex, symbol, rdx, rdy, false, refinementAt, decodingContext); - } } else { // 6.5.8.1 Direct-coded symbol bitmap bitmap = decodeBitmap(false, currentWidth, currentHeight, @@ -37517,21 +37591,14 @@ 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; } @@ -37542,19 +37609,16 @@ var Jbig2Image = (function Jbig2ImageClosure() { combinationOperator, huffmanTables, refinementTemplateIndex, refinementAt, decodingContext) { - if (huffman) { + if (huffman) error('JBIG2 error: huffman is not supported'); - } // Prepare bitmap var bitmap = []; - var i, row; - for (i = 0; i < height; i++) { - row = new Uint8Array(width); + for (var i = 0; i < height; i++) { + var 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); } @@ -37563,7 +37627,7 @@ var Jbig2Image = (function Jbig2ImageClosure() { var contextCache = decodingContext.contextCache; var stripT = -decodeInteger(contextCache, 'IADT', decoder); // 6.4.6 var firstS = 0; - i = 0; + var i = 0; while (i < numberOfSymbolInstances) { var deltaT = decodeInteger(contextCache, 'IADT', decoder); // 6.4.6 stripT += deltaT; @@ -37572,12 +37636,12 @@ 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; @@ -37595,26 +37659,25 @@ 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 (s2 = 0; s2 < symbolHeight; s2++) { - row = bitmap[offsetS + s2]; + // Place Symbol Bitmap from T1,S1 + for (var s2 = 0; s2 < symbolHeight; s2++) { + var row = bitmap[offsetS + s2]; if (!row) { continue; } - symbolRow = symbolBitmap[s2]; + var 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 (t2 = 0; t2 < maxWidth; t2++) { + for (var t2 = 0; t2 < maxWidth; t2++) { row[offsetT + t2] |= symbolRow[t2]; } break; case 2: // XOR - for (t2 = 0; t2 < maxWidth; t2++) { + for (var t2 = 0; t2 < maxWidth; t2++) { row[offsetT + t2] ^= symbolRow[t2]; } break; @@ -37625,20 +37688,20 @@ var Jbig2Image = (function Jbig2ImageClosure() { } currentS += symbolHeight - 1; } else { - for (t2 = 0; t2 < symbolHeight; t2++) { - row = bitmap[offsetT + t2]; + for (var t2 = 0; t2 < symbolHeight; t2++) { + var row = bitmap[offsetT + t2]; if (!row) { continue; } - symbolRow = symbolBitmap[t2]; + var symbolRow = symbolBitmap[t2]; switch (combinationOperator) { case 0: // OR - for (s2 = 0; s2 < symbolWidth; s2++) { + for (var s2 = 0; s2 < symbolWidth; s2++) { row[offsetS + s2] |= symbolRow[s2]; } break; case 2: // XOR - for (s2 = 0; s2 < symbolWidth; s2++) { + for (var s2 = 0; s2 < symbolWidth; s2++) { row[offsetS + s2] ^= symbolRow[s2]; } break; @@ -37651,9 +37714,8 @@ 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); } @@ -37665,53 +37727,47 @@ 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 = readUint32(data, position - 1) & 0x1FFFFFFF; + if (referredFlags == 7) { + referredToCount = readInt32(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 = []; - var i, ii; - for (i = 0; i < referredToCount; i++) { - var number = (referredToSegmentNumberSize === 1 ? data[position] : - (referredToSegmentNumberSize === 2 ? readUint16(data, position) : - readUint32(data, position))); + for (var 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); @@ -37729,17 +37785,17 @@ var Jbig2Image = (function Jbig2ImageClosure() { searchPattern[3] = (genericRegionInfo.height >> 16) & 0xFF; searchPattern[4] = (genericRegionInfo.height >> 8) & 0xFF; searchPattern[5] = genericRegionInfo.height & 0xFF; - for (i = position, ii = data.length; i < ii; i++) { + for (var 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 { @@ -37766,9 +37822,8 @@ 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++) { @@ -37796,7 +37851,7 @@ var Jbig2Image = (function Jbig2ImageClosure() { var header = segment.header; var data = segment.data, position = segment.start, end = segment.end; - var args, at, i, atLength; + var args; switch (header.type) { case 0: // SymbolDictionary // 7.4.2 Symbol dictionary segment syntax @@ -37814,9 +37869,9 @@ var Jbig2Image = (function Jbig2ImageClosure() { dictionary.refinementTemplate = (dictionaryFlags >> 12) & 1; position += 2; if (!dictionary.huffman) { - atLength = dictionary.template === 0 ? 4 : 1; - at = []; - for (i = 0; i < atLength; i++) { + var atLength = dictionary.template === 0 ? 4 : 1; + var at = []; + for (var i = 0; i < atLength; i++) { at.push({ x: readInt8(data, position), y: readInt8(data, position + 1) @@ -37826,8 +37881,8 @@ var Jbig2Image = (function Jbig2ImageClosure() { dictionary.at = at; } if (dictionary.refinement && !dictionary.refinementTemplate) { - at = []; - for (i = 0; i < 2; i++) { + var at = []; + for (var i = 0; i < 2; i++) { at.push({ x: readInt8(data, position), y: readInt8(data, position + 1) @@ -37873,8 +37928,8 @@ var Jbig2Image = (function Jbig2ImageClosure() { !!(textRegionHuffmanFlags & 14); } if (textRegion.refinement && !textRegion.refinementTemplate) { - at = []; - for (i = 0; i < 2; i++) { + var at = []; + for (var i = 0; i < 2; i++) { at.push({ x: readInt8(data, position), y: readInt8(data, position + 1) @@ -37886,9 +37941,8 @@ 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 @@ -37901,9 +37955,9 @@ var Jbig2Image = (function Jbig2ImageClosure() { genericRegion.template = (genericRegionSegmentFlags >> 1) & 3; genericRegion.prediction = !!(genericRegionSegmentFlags & 8); if (!genericRegion.mmr) { - atLength = genericRegion.template === 0 ? 4 : 1; - at = []; - for (i = 0; i < atLength; i++) { + var atLength = genericRegion.template === 0 ? 4 : 1; + var at = []; + for (var i = 0; i < atLength; i++) { at.push({ x: readInt8(data, position), y: readInt8(data, position + 1) @@ -37921,9 +37975,8 @@ 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); @@ -37948,25 +38001,22 @@ 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++]; @@ -37997,13 +38047,9 @@ var Jbig2Image = (function Jbig2ImageClosure() { this.currentPageInfo = info; var rowSize = (info.width + 7) >> 3; var buffer = new Uint8Array(rowSize * info.height); - // 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; - } - } + var fill = info.defaultPixelValue ? 0xFF : 0; + for (var i = 0, ii = buffer.length; i < ii; i++) + buffer[i] = fill; this.buffer = buffer; }, drawBitmap: function SimpleSegmentVisitor_drawBitmap(regionInfo, bitmap) { @@ -38013,47 +38059,34 @@ var Jbig2Image = (function Jbig2ImageClosure() { var combinationOperator = pageInfo.combinationOperatorOverride ? regionInfo.combinationOperator : pageInfo.combinationOperator; var buffer = this.buffer; - 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; - } + 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; mask >>= 1; if (!mask) { mask = 128; offset++; } } - 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; - } + break; + case 2: // XOR + for (var j = 0; j < width; j++) { + buffer[offset] ^= bitmap[i][j] ? mask : 0; mask >>= 1; if (!mask) { mask = 128; offset++; } } - offset0 += rowSize; - } - break; - default: - error('JBIG2 error: operator ' + combinationOperator + - ' is not supported'); + break; + default: + error('JBIG2 error: operator ' + combinationOperator + + ' is not supported'); + } } }, onImmediateGenericRegion: @@ -38076,20 +38109,17 @@ 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, @@ -38109,9 +38139,8 @@ 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); @@ -38125,7 +38154,7 @@ var Jbig2Image = (function Jbig2ImageClosure() { }, onImmediateLosslessTextRegion: function SimpleSegmentVisitor_onImmediateLosslessTextRegion() { - this.onImmediateTextRegion.apply(this, arguments); + this.onImmediateTextRegion.apply(this, arguments); } }; @@ -38200,10 +38229,10 @@ 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; } @@ -38222,61 +38251,94 @@ var bidi = PDFJS.bidi = (function bidiClosure() { } } - function createBidiText(str, isLTR, vertical) { - return { - str: str, - dir: (vertical ? 'ttb' : (isLTR ? 'ltr' : 'rtl')) - }; + 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; + } } - // 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 BidiResult(str, isLTR, vertical) { + this.str = str; + this.dir = vertical ? 'ttb' : isLTR ? 'ltr' : 'rtl'; + } function bidi(str, startLevel, vertical) { var isLTR = true; var strLength = str.length; - if (strLength === 0 || vertical) { - return createBidiText(str, isLTR, vertical); - } + if (strLength === 0 || vertical) + return new BidiResult(str, isLTR, vertical); - // Get types and fill arrays - chars.length = strLength; - types.length = strLength; + // get types, fill arrays + + var chars = []; + var types = []; + var oldtypes = []; var numBidi = 0; - var i, ii; - for (i = 0; i < strLength; ++i) { + for (var 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++; - } - types[i] = charType; + + oldtypes[i] = 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 createBidiText(str, isLTR); + return new BidiResult(str, isLTR); } - if (startLevel === -1) { + if (startLevel == -1) { if ((strLength / numBidi) < 0.3) { isLTR = true; startLevel = 0; @@ -38287,14 +38349,16 @@ var bidi = PDFJS.bidi = (function bidiClosure() { } var levels = []; - for (i = 0; i < strLength; ++i) { + + for (var 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; @@ -38303,13 +38367,13 @@ 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 (i = 0; i < strLength; ++i) { - if (types[i] === 'NSM') { + for (var i = 0; i < strLength; ++i) { + if (types[i] == 'NSM') types[i] = lastType; - } else { + else lastType = types[i]; - } } /* @@ -38317,25 +38381,24 @@ 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. */ - 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') { + + 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 = t; - } } /* W3. Change all ALs to R. */ - for (i = 0; i < strLength; ++i) { - t = types[i]; - if (t === 'AL') { + + for (var i = 0; i < strLength; ++i) { + var t = types[i]; + if (t == 'AL') types[i] = 'R'; - } } /* @@ -38343,36 +38406,32 @@ var bidi = PDFJS.bidi = (function bidiClosure() { European number. A single common separator between two numbers of the same type changes to that type: */ - for (i = 1; i < strLength - 1; ++i) { - if (types[i] === 'ES' && types[i - 1] === 'EN' && types[i + 1] === 'EN') { + + for (var 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 (i = 0; i < strLength; ++i) { - if (types[i] === 'EN') { + + for (var i = 0; i < strLength; ++i) { + if (types[i] == 'EN') { // do before - var j; - for (j = i - 1; j >= 0; --j) { - if (types[j] !== 'ET') { + for (var j = i - 1; j >= 0; --j) { + if (types[j] != 'ET') break; - } types[j] = 'EN'; } // do after - for (j = i + 1; j < strLength; --j) { - if (types[j] !== 'ET') { + for (var j = i + 1; j < strLength; --j) { + if (types[j] != 'ET') break; - } types[j] = 'EN'; } } @@ -38381,11 +38440,11 @@ var bidi = PDFJS.bidi = (function bidiClosure() { /* W6. Otherwise, separators and terminators change to Other Neutral: */ - for (i = 0; i < strLength; ++i) { - t = types[i]; - if (t === 'WS' || t === 'ES' || t === 'ET' || t === 'CS') { + + for (var i = 0; i < strLength; ++i) { + var t = types[i]; + if (t == 'WS' || t == 'ES' || t == 'ET' || t == 'CS') types[i] = 'ON'; - } } /* @@ -38393,14 +38452,14 @@ 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. */ - 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') { + + 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 = t; - } } /* @@ -38409,27 +38468,22 @@ 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 (i = 0; i < strLength; ++i) { - if (types[i] === 'ON') { + + for (var 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) } } @@ -38437,10 +38491,10 @@ var bidi = PDFJS.bidi = (function bidiClosure() { /* N2. Any remaining neutrals take the embedding direction. */ - for (i = 0; i < strLength; ++i) { - if (types[i] === 'ON') { + + for (var i = 0; i < strLength; ++i) { + if (types[i] == 'ON') types[i] = e; - } } /* @@ -38450,16 +38504,17 @@ 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 (i = 0; i < strLength; ++i) { - t = types[i]; + + for (var i = 0; i < strLength; ++i) { + var 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 - if (t === 'L' || t === 'AN' || t === 'EN') { + } else { // isOdd, so + if (t == 'L' || t == 'AN' || t == 'EN') { levels[i] += 1; } } @@ -38485,24 +38540,23 @@ var bidi = PDFJS.bidi = (function bidiClosure() { */ // find highest level & lowest odd level + var highestLevel = -1; var lowestOddLevel = 99; - var level; - for (i = 0, ii = levels.length; i < ii; ++i) { - level = levels[i]; - if (highestLevel < level) { + for (var i = 0, ii = levels.length; i < ii; ++i) { + var 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 (level = highestLevel; level >= lowestOddLevel; --level) { + + for (var level = highestLevel; level >= lowestOddLevel; --level) { // find segments to reverse var start = -1; - for (i = 0, ii = levels.length; i < ii; ++i) { + for (var i = 0, ii = levels.length; i < ii; ++i) { if (levels[i] < level) { if (start >= 0) { reverseValues(chars, start, i); @@ -38535,185 +38589,1414 @@ var bidi = PDFJS.bidi = (function bidiClosure() { // don't mirror as characters are already mirrored in the pdf // Finally, return string + var result = ''; - for (i = 0, ii = chars.length; i < ii; ++i) { + for (var i = 0, ii = chars.length; i < ii; ++i) { var ch = chars[i]; - if (ch !== '<' && ch !== '>') { + if (ch != '<' && ch != '>') result += ch; - } } - return createBidiText(result, isLTR); + + return new BidiResult(result, isLTR); } return bidi; })(); -/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ -/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */ -/* 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 */ +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]] +}; -'use strict'; - -var MurmurHash3_64 = (function MurmurHash3_64Closure (seed) { - // Workaround for missing math precison in JS. - var MASK_HIGH = 0xffff0000; - var MASK_LOW = 0xffff; - - function MurmurHash3_64 (seed) { - var SEED = 0xc3d2e1f0; - this.h1 = seed ? seed & 0xffffffff : SEED; - this.h2 = seed ? seed & 0xffffffff : SEED; +// 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; } - - 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 - - MurmurHash3_64.prototype = { - update: function MurmurHash3_64_update(input) { - var useUint32ArrayView = alwaysUseUint32ArrayView; - var i; - 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; - } - } - } 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; - } - } - - k1 = 0; - - switch (tailLength) { - case 3: - k1 ^= data[blockCounts * 4 + 2] << 16; - /* falls through */ - case 2: - k1 ^= data[blockCounts * 4 + 1] << 8; - /* falls through */ - case 1: - 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; + CMap.prototype = { + addCodespaceRange: function(n, low, high) { + this.codespaceRanges[n - 1].push(low, high); }, - hexdigest: function MurmurHash3_64_hexdigest () { - var h1 = this.h1; - var h2 = this.h2; + 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; + } + }, - 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; + mapRangeToArray: function(low, high, array) { + var i = 0; + while (low <= high) { + this.map[low] = array[i++]; + ++low; + } + }, - 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; + 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]; + } } - str += hex; } - return str; + 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 -*- / +/* 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 + + 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. +*/ + +// - 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 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 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; + 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; + } + } + 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; + } + } + 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(); + + 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; + 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) { + 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'; + } } }; - return MurmurHash3_64; + return constructor; })();