Subversion-Projekte lars-tiefland.ci

/*!

 * XRegExp 2.0.0 <xregexp.com> MIT License

 */

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/*!

 * SyntaxHighlighter by Alex Gorbatchev

 * https://github.com/alexgorbatchev/SyntaxHighlighter - MIT license

 */

//

// Begin anonymous function. This is used to contain local scope variables without polutting global scope.

//

if (typeof(SyntaxHighlighter) == 'undefined') var SyntaxHighlighter = function() {

// CommonJS

if (typeof(require) != 'undefined' && typeof(XRegExp) == 'undefined')

{

    XRegExp = require('xregexp').XRegExp;

}

// Shortcut object which will be assigned to the SyntaxHighlighter variable.

// This is a shorthand for local reference in order to avoid long namespace

// references to SyntaxHighlighter.whatever...

var sh = {

    defaults : {

        /** Additional CSS class names to be added to highlighter elements. */

        'class-name' : '',

        /** First line number. */

        'first-line' : 1,

        /**

         * Pads line numbers. Possible values are:

         *

         *   false - don't pad line numbers.

         *   true  - automaticaly pad numbers with minimum required number of leading zeroes.

         *   [int] - length up to which pad line numbers.

         */

        'pad-line-numbers' : false,

        /** Lines to highlight. */

        'highlight' : null,

        /** Title to be displayed above the code block. */

        'title' : null,

        /** Enables or disables smart tabs. */

        'smart-tabs' : true,

        /** Gets or sets tab size. */

        'tab-size' : 4,

        /** Enables or disables gutter. */

        'gutter' : true,

        /** Enables or disables toolbar. */

        'toolbar' : true,

        /** Enables quick code copy and paste from double click. */

        'quick-code' : true,

        /** Forces code view to be collapsed. */

        'collapse' : false,

        /** Enables or disables automatic links. */

        'auto-links' : true,

        /** Gets or sets light mode. Equavalent to turning off gutter and toolbar. */

        'light' : false,

        'unindent' : true,

        'html-script' : false

    },

    config : {

        space : ' ',

        /** Enables use of <SCRIPT type="syntaxhighlighter" /> tags. */

        useScriptTags : true,

        /** Blogger mode flag. */

        bloggerMode : false,

        stripBrs : false,

        /** Name of the tag that SyntaxHighlighter will automatically look for. */

        tagName : 'pre',

        strings : {

            expandSource : 'expand source',

            help : '?',

            alert: 'SyntaxHighlighter\n\n',

            noBrush : 'Can\'t find brush for: ',

            brushNotHtmlScript : 'Brush wasn\'t configured for html-script option: ',

            // this is populated by the build script

            aboutDialog : ''

        }

    },

    /** Internal 'global' variables. */

    vars : {

        discoveredBrushes : null,

        highlighters : {}

    },

    /** This object is populated by user included external brush files. */

    brushes : {},

    /** Common regular expressions. */

    regexLib : {

        multiLineCComments          : XRegExp('/\\*.*?\\*/', 'gs'),

        singleLineCComments         : /\/\/.*$/gm,

        singleLinePerlComments      : /#.*$/gm,

        doubleQuotedString          : /"([^\\"\n]|\\.)*"/g,

        singleQuotedString          : /'([^\\'\n]|\\.)*'/g,

        multiLineDoubleQuotedString : XRegExp('"([^\\\\"]|\\\\.)*"', 'gs'),

        multiLineSingleQuotedString : XRegExp("'([^\\\\']|\\\\.)*'", 'gs'),

        xmlComments                 : XRegExp('(&lt;|<)!--.*?--(&gt;|>)', 'gs'),

        url                         : /\w+:\/\/[\w-.\/?%&=:@;#,]*/g,

        phpScriptTags               : { left: /(&lt;|<)\?(?:=|php)?/g, right: /\?(&gt;|>)/g, 'eof' : true },

        aspScriptTags               : { left: /(&lt;|<)%=?/g, right: /%(&gt;|>)/g },

        scriptScriptTags            : { left: /(&lt;|<)\s*script.*?(&gt;|>)/gi, right: /(&lt;|<)\/\s*script\s*(&gt;|>)/gi }

    },

    toolbar: {

        /**

         * Generates HTML markup for the toolbar.

         * @param {Highlighter} highlighter Highlighter instance.

         * @return {String} Returns HTML markup.

         */

        getHtml: function(highlighter)

        {

            var html = '<div class="toolbar">',

                items = sh.toolbar.items,

                list = items.list

                ;

            function defaultGetHtml(highlighter, name)

            {

                return sh.toolbar.getButtonHtml(highlighter, name, sh.config.strings[name]);

            }

            for (var i = 0, l = list.length; i < l; i++)

            {

                html += (items[list[i]].getHtml || defaultGetHtml)(highlighter, list[i]);

            }

            html += '</div>';

            return html;

        },

        /**

         * Generates HTML markup for a regular button in the toolbar.

         * @param {Highlighter} highlighter Highlighter instance.

         * @param {String} commandName      Command name that would be executed.

         * @param {String} label            Label text to display.

         * @return {String}                 Returns HTML markup.

         */

        getButtonHtml: function(highlighter, commandName, label)

        {

            return '<span><a href="#" class="toolbar_item'

                + ' command_' + commandName

                + ' ' + commandName

                + '">' + label + '</a></span>'

                ;

        },

        /**

         * Event handler for a toolbar anchor.

         */

        handler: function(e)

        {

            var target = e.target,

                className = target.className || ''

                ;

            function getValue(name)

            {

                var r = new RegExp(name + '_(\\w+)'),

                    match = r.exec(className)

                    ;

                return match ? match[1] : null;

            }

            var highlighter = getHighlighterById(findParentElement(target, '.syntaxhighlighter').id),

                commandName = getValue('command')

                ;

            // execute the toolbar command

            if (highlighter && commandName && sh.toolbar.items[commandName].execute)

                sh.toolbar.items[commandName].execute(highlighter);

            // disable default A click behaviour

            e.preventDefault();

        },

        /** Collection of toolbar items. */

        items : {

            // Ordered lis of items in the toolbar. Can't expect `for (var n in items)` to be consistent.

            list: ['expandSource', 'language'],

            expandSource: {

                getHtml: function(highlighter)

                {

                    if (highlighter.getParam('collapse') != true)

                        return '';

                    var title = highlighter.getParam('title');

                    return sh.toolbar.getButtonHtml(highlighter, 'expandSource', title ? title : sh.config.strings.expandSource);

                },

                execute: function(highlighter)

                {

                    var div = getHighlighterDivById(highlighter.id);

                    removeClass(div, 'collapsed');

                }

            },

            /** Command to display the about dialog window. */

            help: {

                execute: function(highlighter)

                {

                    var wnd = popup('', '_blank', 500, 250, 'scrollbars=0'),

                        doc = wnd.document

                        ;

                    doc.write(sh.config.strings.aboutDialog);

                    doc.close();

                    wnd.focus();

                }

            },

            language: {

                getHtml: function (highlighter) {

                    return highlighter.langLabel ?

                        sh.toolbar.getButtonHtml(highlighter, 'lang', highlighter.langLabel) :

                        '';

                }

            }

        }

    },

    /**

     * Finds all elements on the page which should be processes by SyntaxHighlighter.

     *

     * @param {Object} globalParams     Optional parameters which override element's

     *                                  parameters. Only used if element is specified.

     *

     * @param {Object} element  Optional element to highlight. If none is

     *                          provided, all elements in the current document

     *                          are returned which qualify.

     *

     * @return {Array}  Returns list of <code>{ target: DOMElement, params: Object }</code> objects.

     */

    findElements: function(globalParams, element)

    {

        var elements = element ? [element] : toArray(document.getElementsByTagName(sh.config.tagName)),

            conf = sh.config,

            result = []

            ;

        // support for <SCRIPT TYPE="syntaxhighlighter" /> feature

        if (conf.useScriptTags)

            elements = elements.concat(getSyntaxHighlighterScriptTags());

        if (elements.length === 0)

            return result;

        for (var i = 0, l = elements.length; i < l; i++)

        {

            var item = {

                target: elements[i],

                // local params take precedence over globals

                params: merge(globalParams, parseParams(elements[i].className))

            };

            if (item.params['brush'] == null)

                continue;

            result.push(item);

        }

        return result;

    },

    /**

     * Shorthand to highlight all elements on the page that are marked as

     * SyntaxHighlighter source code.

     *

     * @param {Object} globalParams     Optional parameters which override element's

     *                                  parameters. Only used if element is specified.

     *

     * @param {Object} element  Optional element to highlight. If none is

     *                          provided, all elements in the current document

     *                          are highlighted.

     */

    highlight: function(globalParams, element)

    {

        // Don't run the syntax highlighter on IE6/7 as it absolutely kills

        // performance

        var userAgent = navigator.appVersion;

        if (userAgent.indexOf("MSIE 7.") !== -1 || userAgent.indexOf("MSIE 6.") !== -1) {

            return;

        }

        var elements = this.findElements(globalParams, element),

            propertyName = 'innerHTML',

            highlighter = null,

            conf = sh.config

            ;

        if (elements.length === 0)

            return;

        for (var i = 0, l = elements.length; i < l; i++)

        {

            var element = elements[i],

                target = element.target,

                params = element.params,

                brushName = params.brush,

                code

                ;

            if (brushName == null)

                continue;

            // Instantiate a brush

            if (params['html-script'] == 'true' || sh.defaults['html-script'] == true)

            {

                highlighter = new sh.HtmlScript(brushName);

                brushName = 'htmlscript';

            }

            else

            {

                var brush = findBrush(brushName);

                if (brush)

                    highlighter = new brush();

                else

                    continue;

            }

            code = target[propertyName];

            // remove CDATA from <SCRIPT/> tags if it's present

            if (conf.useScriptTags)

                code = stripCData(code);

            // Inject title if the attribute is present

            if ((target.title || '') != '')

                params.title = target.title;

            params['brush'] = brushName;

            highlighter.init(params);

            element = highlighter.getDiv(code);

            // carry over ID

            if ((target.id || '') != '')

                element.id = target.id;

            target.parentNode.replaceChild(element, target);

        }

    },

    /**

     * Main entry point for the SyntaxHighlighter.

     * @param {Object} params Optional params to apply to all highlighted elements.

     */

    all: function(params)

    {

        attachEvent(

            window,

            'load',

            function() { sh.highlight(params); }

        );

    }

}; // end of sh

/**

 * Checks if target DOM elements has specified CSS class.

 * @param {DOMElement} target Target DOM element to check.

 * @param {String} className Name of the CSS class to check for.

 * @return {Boolean} Returns true if class name is present, false otherwise.

 */

function hasClass(target, className)

{

    return target.className.indexOf(className) != -1;

};

/**

 * Adds CSS class name to the target DOM element.

 * @param {DOMElement} target Target DOM element.

 * @param {String} className New CSS class to add.

 */

function addClass(target, className)

{

    if (!hasClass(target, className))

        target.className += ' ' + className;

};

/**

 * Removes CSS class name from the target DOM element.

 * @param {DOMElement} target Target DOM element.

 * @param {String} className CSS class to remove.

 */

function removeClass(target, className)

{

    target.className = target.className.replace(className, '');

};

/**

 * Converts the source to array object. Mostly used for function arguments and

 * lists returned by getElementsByTagName() which aren't Array objects.

 * @param {List} source Source list.

 * @return {Array} Returns array.

 */

function toArray(source)

{

    var result = [];

    for (var i = 0, l = source.length; i < l; i++)

        result.push(source[i]);

    return result;

};

/**

 * Splits block of text into lines.

 * @param {String} block Block of text.

 * @return {Array} Returns array of lines.

 */

function splitLines(block)

{

    return block.split(/\r?\n/);

}

/**

 * Generates HTML ID for the highlighter.

 * @param {String} highlighterId Highlighter ID.

 * @return {String} Returns HTML ID.

 */

function getHighlighterId(id)

{

    var prefix = 'highlighter_';

    return id.indexOf(prefix) == 0 ? id : prefix + id;

};

/**

 * Finds Highlighter instance by ID.

 * @param {String} highlighterId Highlighter ID.

 * @return {Highlighter} Returns instance of the highlighter.

 */

function getHighlighterById(id)

{

    return sh.vars.highlighters[getHighlighterId(id)];

};

/**

 * Finds highlighter's DIV container.

 * @param {String} highlighterId Highlighter ID.

 * @return {Element} Returns highlighter's DIV element.

 */

function getHighlighterDivById(id)

{

    return document.getElementById(getHighlighterId(id));

};

/**

 * Stores highlighter so that getHighlighterById() can do its thing. Each

 * highlighter must call this method to preserve itself.

 * @param {Highilghter} highlighter Highlighter instance.

 */

function storeHighlighter(highlighter)

{

    sh.vars.highlighters[getHighlighterId(highlighter.id)] = highlighter;

};

/**

 * Looks for a child or parent node which has specified classname.

 * Equivalent to jQuery's $(container).find(".className")

 * @param {Element} target Target element.

 * @param {String} search Class name or node name to look for.

 * @param {Boolean} reverse If set to true, will go up the node tree instead of down.

 * @return {Element} Returns found child or parent element on null.

 */

function findElement(target, search, reverse /* optional */)

{

    if (target == null)

        return null;

    var nodes           = reverse != true ? target.childNodes : [ target.parentNode ],

        propertyToFind  = { '#' : 'id', '.' : 'className' }[search.substr(0, 1)] || 'nodeName',

        expectedValue,

        found

        ;

    expectedValue = propertyToFind != 'nodeName'

        ? search.substr(1)

        : search.toUpperCase()

        ;

    // main return of the found node

    if ((target[propertyToFind] || '').indexOf(expectedValue) != -1)

        return target;

    for (var i = 0, l = nodes.length; nodes && i < l && found == null; i++)

        found = findElement(nodes[i], search, reverse);

    return found;

};

/**

 * Looks for a parent node which has specified classname.

 * This is an alias to <code>findElement(container, className, true)</code>.

 * @param {Element} target Target element.

 * @param {String} className Class name to look for.

 * @return {Element} Returns found parent element on null.

 */

function findParentElement(target, className)

{

    return findElement(target, className, true);

};

/**

 * Finds an index of element in the array.

 * @ignore

 * @param {Object} searchElement

 * @param {Number} fromIndex

 * @return {Number} Returns index of element if found; -1 otherwise.

 */

function indexOf(array, searchElement, fromIndex)

{

    fromIndex = Math.max(fromIndex || 0, 0);

    for (var i = fromIndex, l = array.length; i < l; i++)

        if(array[i] == searchElement)

            return i;

    return -1;

};

/**

 * Generates a unique element ID.

 */

function guid(prefix)

{

    return (prefix || '') + Math.round(Math.random() * 1000000).toString();

};

/**

 * Merges two objects. Values from obj2 override values in obj1.

 * Function is NOT recursive and works only for one dimensional objects.

 * @param {Object} obj1 First object.

 * @param {Object} obj2 Second object.

 * @return {Object} Returns combination of both objects.

 */

function merge(obj1, obj2)

{

    var result = {}, name;

    for (name in obj1)

        result[name] = obj1[name];

    for (name in obj2)

        result[name] = obj2[name];

    return result;

};

/**

 * Attempts to convert string to boolean.

 * @param {String} value Input string.

 * @return {Boolean} Returns true if input was "true", false if input was "false" and value otherwise.

 */

function toBoolean(value)

{

    var result = { "true" : true, "false" : false }[value];

    return result == null ? value : result;

};

/**

 * Opens up a centered popup window.

 * @param {String} url      URL to open in the window.

 * @param {String} name     Popup name.

 * @param {int} width       Popup width.

 * @param {int} height      Popup height.

 * @param {String} options  window.open() options.

 * @return {Window}         Returns window instance.

 */

function popup(url, name, width, height, options)

{

    var x = (screen.width - width) / 2,

        y = (screen.height - height) / 2

        ;

    options +=  ', left=' + x +

                ', top=' + y +

                ', width=' + width +

                ', height=' + height

        ;

    options = options.replace(/^,/, '');

    var win = window.open(url, name, options);

    win.focus();

    return win;

};

/**

 * Adds event handler to the target object.

 * @param {Object} obj      Target object.

 * @param {String} type     Name of the event.

 * @param {Function} func   Handling function.

 */

function attachEvent(obj, type, func, scope)

{

    function handler(e)

    {

        e = e || window.event;

        if (!e.target)

        {

            e.target = e.srcElement;

            e.preventDefault = function()

            {

                this.returnValue = false;

            };

        }

        func.call(scope || window, e);

    };

    if (obj.attachEvent)

    {

        obj.attachEvent('on' + type, handler);

    }

    else

    {

        obj.addEventListener(type, handler, false);

    }

};

/**

 * Displays an alert.

 * @param {String} str String to display.

 */

function alert(str)

{

    window.alert(sh.config.strings.alert + str);

};

/**

 * Finds a brush by its alias.

 *

 * @param {String} alias        Brush alias.

 * @param {Boolean} showAlert   Suppresses the alert if false.

 * @return {Brush}              Returns bursh constructor if found, null otherwise.

 */

function findBrush(alias, showAlert)

{

    var brushes = sh.vars.discoveredBrushes,

        result = null

        ;

    if (brushes == null)

    {

        brushes = {};

        // Find all brushes

        for (var brush in sh.brushes)

        {

            var info = sh.brushes[brush],

                aliases = info.aliases

                ;

            if (aliases == null)

                continue;

            // keep the brush name

            info.brushName = brush.toLowerCase();

            for (var i = 0, l = aliases.length; i < l; i++)

                brushes[aliases[i]] = brush;

        }

        sh.vars.discoveredBrushes = brushes;

    }

    result = sh.brushes[brushes[alias]];

    if (result == null && showAlert)

        alert(sh.config.strings.noBrush + alias);

    return result;

};

/**

 * Executes a callback on each line and replaces each line with result from the callback.

 * @param {Object} str          Input string.

 * @param {Object} callback     Callback function taking one string argument and returning a string.

 */

function eachLine(str, callback)

{

    var lines = splitLines(str);

    for (var i = 0, l = lines.length; i < l; i++)

        lines[i] = callback(lines[i], i);

    // include \r to enable copy-paste on windows (ie8) without getting everything on one line

    return lines.join('\r\n');

};

/**

 * This is a special trim which only removes first and last empty lines

 * and doesn't affect valid leading space on the first line.

 *

 * @param {String} str   Input string

 * @return {String}      Returns string without empty first and last lines.

 */

function trimFirstAndLastLines(str)

{

    return str.replace(/^[ ]*[\n]+|[\n]*[ ]*$/g, '');

};

/**

 * Parses key/value pairs into hash object.

 *

 * Understands the following formats:

 * - name: word;

 * - name: [word, word];

 * - name: "string";

 * - name: 'string';

 *

 * For example:

 *   name1: value; name2: [value, value]; name3: 'value'

 *

 * @param {String} str    Input string.

 * @return {Object}       Returns deserialized object.

 */

function parseParams(str)

{

    var match,

        result = {},

        arrayRegex = XRegExp("^\\[(?<values>(.*?))\\]$"),

        pos = 0,

        regex = XRegExp(

            "(?<name>[\\w-]+)" +

            "\\s*:\\s*" +

            "(?<value>" +

                "[\\w%#-]+|" +      // word

                "\\[.*?\\]|" +      // [] array

                '".*?"|' +          // "" string

                "'.*?'" +           // '' string

            ")\\s*;?",

            "g"

        )

        ;

    while ((match = XRegExp.exec(str, regex, pos)) != null)

    {

        var value = match.value

            .replace(/^['"]|['"]$/g, '') // strip quotes from end of strings

            ;

        // try to parse array value

        if (value != null && arrayRegex.test(value))

        {

            var m = XRegExp.exec(value, arrayRegex);

            value = m.values.length > 0 ? m.values.split(/\s*,\s*/) : [];

        }

        result[match.name] = value;

        pos = match.index + match[0].length;

    }

    // AJJ - markdown style language option

    var a = str.match(/language-(.*)/);

    if ( a ) {

        result['brush'] = a[1];

    }

    else if ( str && str.indexOf('multiline') !== -1 ) {

        // Markdown code block without a language identifier

        result['brush'] = 'text';

    }

    return result;

};

/**

 * Wraps each line of the string into <code/> tag with given style applied to it.

 *

 * @param {String} str   Input string.

 * @param {String} css   Style name to apply to the string.

 * @return {String}      Returns input string with each line surrounded by <span/> tag.

 */

function wrapLinesWithCode(str, css)

{

    if (str == null || str.length == 0 || str == '\n')

        return str;

    str = str.replace(/</g, '&lt;');

    // Replace two or more sequential spaces with   leaving last space untouched.

    str = str.replace(/ {2,}/g, function(m)

    {

        var spaces = '';

        for (var i = 0, l = m.length; i < l - 1; i++)

            spaces += sh.config.space;

        return spaces + ' ';

    });

    // Split each line and apply <span class="...">...</span> to them so that

    // leading spaces aren't included.

    if (css != null)

        str = eachLine(str, function(line)

        {

            if (line.length == 0)

                return '';

            var spaces = '';

            line = line.replace(/^( | )+/, function(s)

            {

                spaces = s;

                return '';

            });

            if (line.length == 0)

                return spaces;

            return spaces + '<code class="' + css + '">' + line + '</code>';

        });

    return str;

};

/**

 * Pads number with zeros until it's length is the same as given length.

 *

 * @param {Number} number   Number to pad.

 * @param {Number} length   Max string length with.

 * @return {String}         Returns a string padded with proper amount of '0'.

 */

function padNumber(number, length)

{

    var result = number.toString();

    while (result.length < length)

        result = '0' + result;

    return result;

};

/**

 * Replaces tabs with spaces.

 *

 * @param {String} code     Source code.

 * @param {Number} tabSize  Size of the tab.

 * @return {String}         Returns code with all tabs replaces by spaces.

 */

function processTabs(code, tabSize)

{

    var tab = '';

    for (var i = 0; i < tabSize; i++)

        tab += ' ';

    return code.replace(/\t/g, tab);

};

/**

 * Replaces tabs with smart spaces.

 *

 * @param {String} code    Code to fix the tabs in.

 * @param {Number} tabSize Number of spaces in a column.

 * @return {String}        Returns code with all tabs replaces with roper amount of spaces.

 */

function processSmartTabs(code, tabSize)

{

    var lines = splitLines(code),

        tab = '\t',

        spaces = ''

        ;

    // Create a string with 1000 spaces to copy spaces from...

    // It's assumed that there would be no indentation longer than that.

    for (var i = 0; i < 50; i++)

        spaces += '                    '; // 20 spaces * 50

    // This function inserts specified amount of spaces in the string

    // where a tab is while removing that given tab.

    function insertSpaces(line, pos, count)

    {

        return line.substr(0, pos)

            + spaces.substr(0, count)

            + line.substr(pos + 1, line.length) // pos + 1 will get rid of the tab

            ;

    };

    // Go through all the lines and do the 'smart tabs' magic.

    code = eachLine(code, function(line)

    {

        if (line.indexOf(tab) == -1)

            return line;

        var pos = 0;

        while ((pos = line.indexOf(tab)) != -1)

        {

            // This is pretty much all there is to the 'smart tabs' logic.

            // Based on the position within the line and size of a tab,

            // calculate the amount of spaces we need to insert.

            var spaces = tabSize - pos % tabSize;

            line = insertSpaces(line, pos, spaces);

        }

        return line;

    });

    return code;

};

/**

 * Performs various string fixes based on configuration.

 */

function fixInputString(str)

{

    var br = /<br\s*\/?>|&lt;br\s*\/?&gt;/gi;

    if (sh.config.bloggerMode == true)

        str = str.replace(br, '\n');

    if (sh.config.stripBrs == true)

        str = str.replace(br, '');

    return str;

};

/**

 * Removes all white space at the begining and end of a string.

 *

 * @param {String} str   String to trim.

 * @return {String}      Returns string without leading and following white space characters.

 */

function trim(str)

{

    return str.replace(/^\s+|\s+$/g, '');

};

/**

 * Unindents a block of text by the lowest common indent amount.

 * @param {String} str   Text to unindent.

 * @return {String}      Returns unindented text block.

 */

function unindent(str)

{

    var lines = splitLines(fixInputString(str)),

        indents = new Array(),

        regex = /^\s*/,

        min = 1000

        ;

    // go through every line and check for common number of indents

    for (var i = 0, l = lines.length; i < l && min > 0; i++)

    {

        var line = lines[i];

        if (trim(line).length == 0)

            continue;

        var matches = regex.exec(line);

        // In the event that just one line doesn't have leading white space

        // we can't unindent anything, so bail completely.

        if (matches == null)

            return str;

        min = Math.min(matches[0].length, min);

    }

    // trim minimum common number of white space from the begining of every line

    if (min > 0)

        for (var i = 0, l = lines.length; i < l; i++)

            lines[i] = lines[i].substr(min);

    return lines.join('\n');

};

/**

 * Callback method for Array.sort() which sorts matches by

 * index position and then by length.

 *

 * @param {Match} m1    Left object.

 * @param {Match} m2    Right object.

 * @return {Number}     Returns -1, 0 or -1 as a comparison result.

 */

function matchesSortCallback(m1, m2)

{