overleaf/services/web/public/js/ace/mode/markdown_highlight_rules.js
2014-02-12 10:23:40 +00:00

224 lines
7.9 KiB
JavaScript
Executable file

/* ***** BEGIN LICENSE BLOCK *****
* Distributed under the BSD license:
*
* Copyright (c) 2010, Ajax.org B.V.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Ajax.org B.V. nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ***** END LICENSE BLOCK ***** */
define(function(require, exports, module) {
"use strict";
var oop = require("../lib/oop");
var lang = require("../lib/lang");
var TextHighlightRules = require("./text_highlight_rules").TextHighlightRules;
var JavaScriptHighlightRules = require("./javascript_highlight_rules").JavaScriptHighlightRules;
var XmlHighlightRules = require("./xml_highlight_rules").XmlHighlightRules;
var HtmlHighlightRules = require("./html_highlight_rules").HtmlHighlightRules;
var CssHighlightRules = require("./css_highlight_rules").CssHighlightRules;
var escaped = function(ch) {
return "(?:[^" + lang.escapeRegExp(ch) + "\\\\]|\\\\.)*";
}
function github_embed(tag, prefix) {
return { // Github style block
token : "support.function",
regex : "^```" + tag + "\\s*$",
push : prefix + "start"
};
}
var MarkdownHighlightRules = function() {
HtmlHighlightRules.call(this);
// regexp must not have capturing parentheses
// regexps are ordered -> the first match is used
this.$rules["start"].unshift({
token : "empty_line",
regex : '^$',
next: "allowBlock"
}, { // h1
token: "markup.heading.1",
regex: "^=+(?=\\s*$)"
}, { // h2
token: "markup.heading.2",
regex: "^\\-+(?=\\s*$)"
}, {
token : function(value) {
return "markup.heading." + value.length;
},
regex : /^#{1,6}(?=\s*[^ #]|\s+#.)/,
next : "header"
},
github_embed("(?:javascript|js)", "jscode-"),
github_embed("xml", "xmlcode-"),
github_embed("html", "htmlcode-"),
github_embed("css", "csscode-"),
{ // Github style block
token : "support.function",
regex : "^```\\s*[a-zA-Z]*(?:{.*?\\})?\\s*$",
next : "githubblock"
}, { // block quote
token : "string.blockquote",
regex : "^\\s*>\\s*(?:[*+-]|\\d+\\.)?\\s+",
next : "blockquote"
}, { // HR * - _
token : "constant",
regex : "^ {0,2}(?:(?: ?\\* ?){3,}|(?: ?\\- ?){3,}|(?: ?\\_ ?){3,})\\s*$",
next: "allowBlock"
}, { // list
token : "markup.list",
regex : "^\\s{0,3}(?:[*+-]|\\d+\\.)\\s+",
next : "listblock-start"
}, {
include : "basic"
});
this.addRules({
"basic" : [{
token : "constant.language.escape",
regex : /\\[\\`*_{}\[\]()#+\-.!]/
}, { // code span `
token : "support.function",
regex : "(`+)(.*?[^`])(\\1)"
}, { // reference
token : ["text", "constant", "text", "url", "string", "text"],
regex : "^([ ]{0,3}\\[)([^\\]]+)(\\]:\\s*)([^ ]+)(\\s*(?:[\"][^\"]+[\"])?(\\s*))$"
}, { // link by reference
token : ["text", "string", "text", "constant", "text"],
regex : "(\\[)(" + escaped("]") + ")(\\]\s*\\[)("+ escaped("]") + ")(\\])"
}, { // link by url
token : ["text", "string", "text", "markup.underline", "string", "text"],
regex : "(\\[)(" + // [
escaped("]") + // link text
")(\\]\\()"+ // ](
'((?:[^\\)\\s\\\\]|\\\\.|\\s(?=[^"]))*)' + // href
'(\\s*"' + escaped('"') + '"\\s*)?' + // "title"
"(\\))" // )
}, { // strong ** __
token : "string.strong",
regex : "([*]{2}|[_]{2}(?=\\S))(.*?\\S[*_]*)(\\1)"
}, { // emphasis * _
token : "string.emphasis",
regex : "([*]|[_](?=\\S))(.*?\\S[*_]*)(\\1)"
}, { //
token : ["text", "url", "text"],
regex : "(<)("+
"(?:https?|ftp|dict):[^'\">\\s]+"+
"|"+
"(?:mailto:)?[-.\\w]+\\@[-a-z0-9]+(?:\\.[-a-z0-9]+)*\\.[a-z]+"+
")(>)"
}],
// code block
"allowBlock": [
{token : "support.function", regex : "^ {4}.+", next : "allowBlock"},
{token : "empty", regex : "", next : "start"}
],
"header" : [{
regex: "$",
next : "start"
}, {
include: "basic"
}, {
defaultToken : "heading"
} ],
"listblock-start" : [{
token : "support.variable",
regex : /(?:\[[ x]\])?/,
next : "listblock"
}],
"listblock" : [ { // Lists only escape on completely blank lines.
token : "empty_line",
regex : "^$",
next : "start"
}, { // list
token : "markup.list",
regex : "^\\s{0,3}(?:[*+-]|\\d+\\.)\\s+",
next : "listblock-start"
}, {
include : "basic", noEscape: true
}, {
defaultToken : "list" //do not use markup.list to allow stling leading `*` differntly
} ],
"blockquote" : [ { // BLockquotes only escape on blank lines.
token : "empty_line",
regex : "^\\s*$",
next : "start"
}, { // block quote
token : "string.blockquote",
regex : "^\\s*>\\s*(?:[*+-]|\\d+\\.)?\\s+",
next : "blockquote"
}, {
include : "basic", noEscape: true
}, {
defaultToken : "string.blockquote"
} ],
"githubblock" : [ {
token : "support.function",
regex : "^```",
next : "start"
}, {
token : "support.function",
regex : ".+"
} ]
});
this.embedRules(JavaScriptHighlightRules, "jscode-", [{
token : "support.function",
regex : "^```",
next : "pop"
}]);
this.embedRules(HtmlHighlightRules, "htmlcode-", [{
token : "support.function",
regex : "^```",
next : "pop"
}]);
this.embedRules(CssHighlightRules, "csscode-", [{
token : "support.function",
regex : "^```",
next : "pop"
}]);
this.embedRules(XmlHighlightRules, "xmlcode-", [{
token : "support.function",
regex : "^```",
next : "pop"
}]);
this.normalizeRules();
};
oop.inherits(MarkdownHighlightRules, TextHighlightRules);
exports.MarkdownHighlightRules = MarkdownHighlightRules;
});