Stackedit/res/libs/acemode_highlight_rules.js

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define(function(require, exports, module) {
"use strict";

var oop = require("ace/lib/oop");
var TextHighlightRules = require("ace/mode/text_highlight_rules").TextHighlightRules;

var MarkdownHighlightRules = function() {

    // regexp must not have capturing parentheses
    // regexps are ordered -> the first match is used

    this.$rules = {
        "basic" : [{
            token : "constant.language.escape",
            regex : /\\[\\`*_{}\[\]()#+\-.!]/
        }, { // code span `
            token : "code",
            regex : "(`+)(.*?[^`])(\\1)"
        }, { // reference
            token : ["text", "reference", "text", "markup.underline", "description", "text"],
            regex : "^([ ]{0,3}\\[)([^\\]]+)(\\]:\\s*)([^ ]+)(\\s*(?:[\"][^\"]+[\"])?(\\s*))$"
        }, { // link by reference
            token : ["text", "description", "text", "markup.underline", "text"],
            regex : "(\\[)((?:[[^\\]]*\\]|[^\\[\\]])*)(\\][ ]?(?:\\n[ ]*)?\\[)(.*?)(\\])"
        }, { // link by url
            token : ["text", "description", "text", "markup.underline", "string", "text"],
            regex : "(\\[)"+
                    "(\\[[^\\]]*\\]|[^\\[\\]]*)"+
                    "(\\]\\([ \\t]*)"+
                    "(<?(?:(?:[^\\(]*?\\([^\\)]*?\\)\\S*?)|(?:.*?))>?)"+
                    "((?:[ \t]*\"(?:.*?)\"[ \\t]*)?)"+
                    "(\\))"
        }, { // strong ** __
            token : "strong",
            regex : "([*]{2}|[_]{2}(?=\\S))(.*?\\S[*_]*)(\\1)"
        }, { // emphasis * _
            token : "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 : ["text", "code_block"], regex : "^( {4}|\\t)(.+)", next : "allowBlock"},
            {token : "empty", regex : "", next : "start"}
        ],

        "start" : [{
            token : "empty_line",
            regex : '^$',
            next: "allowBlock"
        }, { // h1
            token: "markup.heading.multi.1",
            regex: "^=+(?=\\s*$)"
        }, { // h2
            token: "markup.heading.multi.2",
            regex: "^\\-+(?=\\s*$)"
        }, {
            token : function(value) {
                return "markup.heading." + value.length;
            },
            regex : /^#{1,6}(?=\s*[^ #]|\s+#.)/,
            next : "header"
        },
        { // Github style block
            token : "code_block",
            regex : "^```\\s*[a-zA-Z]*(?:{.*?\\})?\\s*$",
            next  : "githubblock"
        }, { // block quote
            token : "blockquote",
            regex : "^\\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"
        }, {
            include : "basic"
        }],
        
        "header" : [{
            regex: "$",
            next : "start"
        }, {
            include: "basic"
        }, {
            defaultToken : "markup.heading"
        } ],

        /* don't need checkbox highlighting...
        "listblock-start" : [{
            token : "checkbox",
            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"
        }, {
            include : "basic", noEscape: true
        }, {
            defaultToken : "markup.list"
        } ],

        "blockquote" : [ { // BLockquotes only escape on blank lines.
            token : "empty_line",
            regex : "^\\s*$",
            next  : "start"
        }, {
            token : "blockquote",
            regex : ".+"
        } ],

        "githubblock" : [ {
            token : "code_block",
            regex : "^```",
            next  : "start"
        }, {
            token : "code_block",
            regex : ".+"
        } ]
    };

    this.normalizeRules();
};
oop.inherits(MarkdownHighlightRules, TextHighlightRules);

exports.MarkdownHighlightRules = MarkdownHighlightRules;
});