src/main/webapp/resources/ueditor/third-party/SyntaxHighlighter/shCore.js

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// XRegExp 1.5.1
// (c) 2007-2012 Steven Levithan
// MIT License
// <http://xregexp.com>
// Provides an augmented, extensible, cross-browser implementation of regular expressions,
// including support for additional syntax, flags, and methods

var XRegExp;

if (XRegExp) {
    // Avoid running twice, since that would break references to native globals
    throw Error("can't load XRegExp twice in the same frame");
}

// Run within an anonymous function to protect variables and avoid new globals
(function (undefined) {

    //---------------------------------
    //  Constructor
    //---------------------------------

    // Accepts a pattern and flags; returns a new, extended `RegExp` object. Differs from a native
    // regular expression in that additional syntax and flags are supported and cross-browser
    // syntax inconsistencies are ameliorated. `XRegExp(/regex/)` clones an existing regex and
    // converts to type XRegExp
    XRegExp = function (pattern, flags) {
        var output = [],
            currScope = XRegExp.OUTSIDE_CLASS,
            pos = 0,
            context, tokenResult, match, chr, regex;

        if (XRegExp.isRegExp(pattern)) {
            if (flags !== undefined)
                throw TypeError("can't supply flags when constructing one RegExp from another");
            return clone(pattern);
        }
        // Tokens become part of the regex construction process, so protect against infinite
        // recursion when an XRegExp is constructed within a token handler or trigger
        if (isInsideConstructor)
            throw Error("can't call the XRegExp constructor within token definition functions");

        flags = flags || "";
        context = { // `this` object for custom tokens
            hasNamedCapture: false,
            captureNames: [],
            hasFlag: function (flag) {return flags.indexOf(flag) > -1;},
            setFlag: function (flag) {flags += flag;}
        };

        while (pos < pattern.length) {
            // Check for custom tokens at the current position
            tokenResult = runTokens(pattern, pos, currScope, context);

            if (tokenResult) {
                output.push(tokenResult.output);
                pos += (tokenResult.match[0].length || 1);
            } else {
                // Check for native multicharacter metasequences (excluding character classes) at
                // the current position
                if (match = nativ.exec.call(nativeTokens[currScope], pattern.slice(pos))) {
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