dp.sh.Brushes.Xml = function()
{
    this.CssClass = 'dp-xml';
    this.Style =    '.dp-xml .cdata { color: #ff1493; }' +
                    '.dp-xml .tag, .dp-xml .tag-name { color: #069; font-weight: normal; }' +
                    '.dp-xml .attribute { color: red; }' +
                    '.dp-xml .attribute-value { color: #369; }';
}

dp.sh.Brushes.Xml.prototype    = new dp.sh.Highlighter();
dp.sh.Brushes.Xml.Aliases    = ['xml', 'xhtml', 'xslt', 'html', 'xhtml'];

dp.sh.Brushes.Xml.prototype.ProcessRegexList = function()
{
    function push(array, value)
    {
        array[array.length] = value;
    }
    
    /* If only there was a way to get index of a group within a match, the whole XML
       could be matched with the expression looking something like that:
    
       (<!\[CDATA\[\s*.*\s*\]\]>)
       | (<!--\s*.*\s*?-->)
       | (<)*(\w+)*\s*(\w+)\s*=\s*(".*?"|'.*?'|\w+)(/*>)*
       | (</?)(.*?)(/?>)
    */
    var index    = 0;
    var match    = null;
    var regex    = null;

    // Match CDATA in the following format <![ ... [ ... ]]>
    // (\&lt;|<)\!\[[\w\s]*?\[(.|\s)*?\]\](\&gt;|>)
    this.GetMatches(new RegExp('(\&lt;|<)\\!\\[[\\w\\s]*?\\[(.|\\s)*?\\]\\](\&gt;|>)', 'gm'), 'cdata');
    
    // Match comments
    // (\&lt;|<)!--\s*.*?\s*--(\&gt;|>)
    this.GetMatches(new RegExp('(\&lt;|<)!--\\s*.*?\\s*--(\&gt;|>)', 'gm'), 'comments');

    // Match attributes and their values
    // (:|\w+)\s*=\s*(".*?"|\'.*?\'|\w+)*
    regex = new RegExp('([:\\w-\.]+)\\s*=\\s*(".*?"|\'.*?\'|\\w+)*|(\\w+)', 'gm'); // Thanks to Tomi Blinnikka of Yahoo! for fixing namespaces in attributes
    while((match = regex.exec(this.code)) != null)
    {
        if(match[1] == null)
        {
            continue;
        }
            
        push(this.matches, new dp.sh.Match(match[1], match.index, 'attribute'));
    
        // if xml is invalid and attribute has no property value, ignore it    
        if(match[2] != undefined)
        {
            push(this.matches, new dp.sh.Match(match[2], match.index + match[0].indexOf(match[2]), 'attribute-value'));
        }
    }

    // Match opening and closing tag brackets
    // (\&lt;|<)/*\?*(?!\!)|/*\?*(\&gt;|>)
    this.GetMatches(new RegExp('(\&lt;|<)/*\\?*(?!\\!)|/*\\?*(\&gt;|>)', 'gm'), 'tag');

    // Match tag names
    // (\&lt;|<)/*\?*\s*(\w+)
    regex = new RegExp('(?:\&lt;|<)/*\\?*\\s*([:\\w-\.]+)', 'gm');
    while((match = regex.exec(this.code)) != null)
    {
        push(this.matches, new dp.sh.Match(match[1], match.index + match[0].indexOf(match[1]), 'tag-name'));
    }
}