全文本代码着色（带源码和示例）

写了一个全文本的C#代码着色器，不采用任何图片，因为事先没有参考任何已有着色器源码，可能有些地方实现的不是很优雅，如果谁手里有其他着色器的源码，望多交流！

完整源码下载地址：
http://teddy.51.net/products/HtmlCodeColor.rar

代码示例:

		using System;
		using System.Text.RegularExpressions;
		namespace CN.Teddy.Util.HtmlCodeColor
		{
		/// <summary>
		/// C#代码着色适配器
		/// </summary>
		public class CSharpAdapter : ICodeColorAdapter
		{
	+	Constructors
		public CSharpAdapter()
		{
		//null
		}
	-	#endregion
	+	Private Members
		/// <summary>
		/// 为//和/**/类型的注释着色
		/// </summary>
		/// <param name="src">输入源码</param>
		/// <returns>格式化后的源码</returns>
		private string ColorBasicComment(string src)
		{
		string retCode = src;
		Regex r1 = new Regex(@"(^|;)([ \t]*)(//.*$)", RegexOptions.Multiline);
		retCode = r1.Replace(retCode, "$1$2<span style=\"color: green\">$3</span>");
		Regex r2 = new Regex(@"(^|[ \t]+)(/\*[^\*/]*\*/[ \t\r]*$)", RegexOptions.Multiline);
		retCode = r2.Replace(retCode, new MatchEvaluator(this.ColorBasicComment2Evaluator));
		return retCode;
		}
		/// <summary>
		/// 为///类型的注释着色
		/// </summary>
		/// <param name="src">输入源码</param>
		/// <returns>格式化后的源码</returns>
		private string ColorXmlComment(string src)
		{
		string retCode = src;
		Regex r1 = new Regex(@"(/// *)&lt;(.*)&gt;", RegexOptions.Multiline);
		retCode = r1.Replace(retCode, new MatchEvaluator(this.ColorXmlCommentEvaluator));
		Regex r2 = new Regex(@"(/// *)(.*$)", RegexOptions.Multiline);
		retCode = r2.Replace(retCode, "<span style=\"color: gray\">$1</span>$2");
		return retCode;
		}
		/// <summary>
		/// 为折叠显示代码构建HtmlTable框架
		/// </summary>
		/// <param name="src">输入源码</param>
		/// <returns>格式化后的源码</returns>
		private string DrawCollapseFrameTable(string src)
		{
		System.Text.StringBuilder retCode = new System.Text.StringBuilder();
		string frameHeader = "<table border=0 cellpadding=0 cellspacing=0 width=95% style='border: windowtext 0.5pt solid; background-color:#fefefe'><tr><td valign=top align=center style='border-right-color: #808080; border-right-style: solid; border-right-width: 1px'><table border=0 cellpadding=0 cellspacing=0><tr><td>&nbsp;</td><td>&nbsp;</td></tr></table></td><td><table border=0 cellpadding=1 cellspacing=0 width=100%>";
		string frameTailer = "</table></td></tr></table>";
		retCode.Append(frameHeader);
		string[] lines = src.Split('\n');
		foreach (string line in lines)
		{
		string formatedLine = line.Trim();
		string lineHeader = "<tr><td style='width: 0px'><table style='width: 9px; height: 9px'><tr><td></td></tr></table></td><td style='width: 0px'></td><td style='width: 100%'><code style='font: 9pt Tahoma'>";
		string lineTailer = "</code></td></tr>";
		formatedLine = lineHeader + formatedLine + lineTailer;
		retCode.Append(formatedLine);
		}
		retCode.Append(frameTailer);
		return retCode.ToString();
		}
		/// <summary>
		/// 折叠Region
		/// </summary>
		/// <param name="src">输入源码</param>
		/// <returns>格式化后的源码</returns>
		private string CollapseRegion(string src)
		{
		string retCode = src;
		string lineHeader = "<tr><td style='width: 0px'><table style='width: 9px; height: 9px'><tr><td></td></tr></table></td><td style='width: 0px'></td><td style='width: 100%'><code style='font: 9pt Tahoma'>";
		Regex r = new Regex(lineHeader + @"(&nbsp;)*<span style=\""color: blue\"">#region<.*$", RegexOptions.Multiline);
		while (r.Match(retCode).Success)
		{
		//add "+" tag
		retCode = r.Replace(retCode, new MatchEvaluator(this.CollapseRegionEvaluator));
		}
		return retCode;
		}
		/// <summary>
		/// 为一行源码中的关键字着色
		/// </summary>
		/// <param name="codeLine">某一行源码</param>
		/// <param name="keywordList">关键字列表</param>
		/// <returns>格式化后的源码</returns>
		/// <summary>
		private string ColorKeyword(string codeLine, string[] keywordList)
		{
		string retCode = codeLine;
		if (!retCode.StartsWith("//"))
		{
		foreach (string keyword in KEYWORD_LIST)
		{
		Regex r = new Regex(@"(^|\s+|,|\)|\(|\{|\}|\[|\]|\.|=|;)(" + keyword + @")(\s+|,|\)|\(|\{|\}|\[|\]|\.|=|;|$)");
		retCode = r.Replace(retCode, "$1<span style=\"color: blue\">$2</span>$3");
		}
		}
		retCode = ClearColoredKeyworsInString(retCode);
		return retCode.Trim();
		}
		/// <summary>
		/// 清除字符串中的被着色的关键字
		/// </summary>
		/// <param name="codeLine">某一行源码</param>
		/// <returns>格式化后的源码</returns>
		private string ClearColoredKeyworsInString(string codeLine)
		{
		System.Text.StringBuilder retCode = new System.Text.StringBuilder();
		string str = codeLine.Trim();
		int indexOfQuot = str.IndexOf("&quot;");
		int lengthOfQuot = "&quot;".Length;
		if (indexOfQuot >= 0)
		{
		while (indexOfQuot >= 0)
		{
		retCode.Append(str.Substring(0, indexOfQuot + lengthOfQuot));
		str = str.Substring(indexOfQuot + lengthOfQuot);
		indexOfQuot = str.IndexOf("&quot;");
		if (indexOfQuot >= 0)
		{
		string inStr = str.Substring(0, indexOfQuot + lengthOfQuot);
		inStr = inStr.Replace("\"color: blue\"", "\"\"");
		retCode.Append(inStr);
		str = str.Substring(indexOfQuot + lengthOfQuot);
		}
		indexOfQuot = str.IndexOf("&quot;");
		}
		}
		retCode.Append(str);
		return retCode.ToString();
		}
		public static string[] KEYWORD_LIST = {
		"abstract", "event", "new", "struct", "as", "explicit", "null", "switch",
		"base", "extern", "object", "this", "bool", "false", "operator", "throw",
		"break", "finally", "out", "true", "byte", "fixed", "override", "try",
		"case", "float", "params", "typeof", "catch", "for", "private", "uint",
		"char", "foreach", "protected", "ulong", "checked", "goto", "public",
		"unchecked", "class", "if", "readonly", "unsafe", "const", "implicit",
		"ref", "ushort", "continue", "in", "return", "using", "decimal", "int",
		"sbyte", "virtual", "default", "interface", "sealed", "volatile",
		"delegate", "internal", "short", "void", "do", "is", "sizeof", "while",
		"double", "lock", "stackalloc", "else", "long", "static", "enum",
		"namespace", "string", "get", "set", "#region", "#endregion", "true",
		"false"
		};
		private string ColorXmlCommentEvaluator(Match m)
		{
		Regex r = new Regex("(^.*&gt;)(.*)(&lt;/.*$)");
		if (r.Match(m.Value).Success)
		{
		return r.Replace(m.Value, "<span style=\"color: gray\">$1</span>$2<span style=\"color: gray\">$3</span>");
		}
		else
		{
		return "<span style=\"color: gray\">" + m.Value + "</span>";
		}
		}
		private string ColorBasicComment2Evaluator(Match m)
		{
		System.Text.StringBuilder retCode = new System.Text.StringBuilder();
		string[] lines = m.Value.Split('\n');
		foreach (string line in lines)
		{
		retCode.Append("<span style=\"color: green\">" + line + "</span>" + "\n");
		}
		return retCode.ToString();
		}
		private string CollapseRegionEvaluator(Match m)
		{
		//get region code block
		string retCode = m.Value;
		string lineHeader = "<tr><td style='width: 0px'><table style='width: 9px; height: 9px'><tr><td></td></tr></table></td><td style='width: 0px'></td><td style='width: 100%'><code style='font: 9pt Tahoma'>";
		string lineTailer = "</code></td></tr>";
		Regex r = new Regex("^" + lineHeader + @"(&nbsp;)*<span style=\""color: blue\"">#region</span>[^<]*" + lineTailer, RegexOptions.Multiline);
		retCode = r.Replace(retCode, new MatchEvaluator(this.CollapseRegionEvaluator2));
		//find out #region - #endregion block & add collapse code
		string endRegionLinePattern = "<tr><td style='width: 0px'><table style='width: 9px; height: 9px'><tr><td></td></tr></table></td><td style='width: 0px'></td><td style='width: 100%'><code style='font: 9pt Tahoma'>(&nbsp;)*<span style=\"color: blue\">#endregion</span></code></td></tr>";
		Regex r2 = new Regex(endRegionLinePattern);
		string endRegionLine = r2.Match(retCode).Value;
		string formatedEndRegionLine = endRegionLine.Replace("<td style='width: 0px'></td><td style='width: 100%'>", "<td style='width: 0px'><span style='position: relative; left: -12px; font: 12px'><font color=#808080 face='Tahoma'>-</font></span></td><td style='width: 100%'>");
		string regionBlock = retCode.Substring(0, retCode.IndexOf(endRegionLine)) + formatedEndRegionLine;
		string spaces = new Regex("(&nbsp;)+").Match(regionBlock).Value;
		string regionDescWidthTag = new Regex("#region</span> ([^<]*)</code>").Match(regionBlock).Value;
		string regionDesc = regionDescWidthTag.Substring(15, regionDescWidthTag.Length - ("#region</span> ").Length - ("</code>").Length);
		regionBlock = regionBlock.Replace("</tr><tr><td style='width: 0px'>", "</tr><tr style='display: none'><td style='width: 0px'>");
		regionBlock = regionBlock.Substring(0, regionBlock.IndexOf("<code style='font: 9pt Tahoma'>") + "<code style='font: 9pt Tahoma'>".Length) +
		"<span>" + spaces + "</span>" + "<span style='border: 1px solid gray'><font color=gray>" + regionDesc + "</font></span>" +
		regionBlock.Substring(regionBlock.IndexOf("</code>"));
		retCode = regionBlock + retCode.Substring(retCode.IndexOf(endRegionLine) + endRegionLine.Length);
		return retCode;
		}
		private string CollapseRegionEvaluator2(Match m)
		{
		string retCode = m.Value;
		//add rectangle
		retCode = retCode.Replace("style='width: 9px; height: 9px'", "style='position: relative; left: -6px; top: 0px; border-color: #808080; border-style: solid; border-width: 1px; background: white; width: 9px; height: 9px'");
		string spaces = new Regex("(&nbsp;)+").Match(m.Value).Value;
		string regionDescWidthTag = new Regex("#region</span> ([^<]*)</code>").Match(m.Value).Value;
		string regionDesc = regionDescWidthTag.Substring(15, regionDescWidthTag.Length - ("#region</span> ").Length - ("</code>").Length);
		//add "+" tag
		retCode = retCode.Replace("<td style='width: 0px'></td>", "<td style='width: 0px'><span style='position: relative; left: -16px; top: -1px; font: 12px; cursor: hand' onclick='if (this.childNodes[0].innerHTML == \"_\") { this.childNodes[0].innerHTML = \"+\"; this.style.top = \"-1px\"; this.parentNode.nextSibling.childNodes[0].innerHTML = \"<span>" + spaces + "</span><span><font color=gray>" + regionDesc + "</font></span>\"; this.parentNode.nextSibling.childNodes[0].childNodes[1].style.border = \"1px solid gray\"; for (var i = 1 + this.parentNode.parentNode.rowIndex; i < this.parentNode.parentNode.parentNode.childNodes.length; i++) { this.parentNode.parentNode.parentNode.childNodes[i].style.display=\"none\"; if ( this.parentNode.parentNode.parentNode.childNodes[i].childNodes[1].innerText.length > 0 ) { break; } } } else { this.childNodes[0].innerHTML = \"_\"; this.style.top = \"-6px\"; var oldDesc = this.parentNode.nextSibling.childNodes[0].childNodes[1].childNodes[0].innerHTML; this.parentNode.nextSibling.childNodes[0].innerHTML = \"<span>" + spaces + "</span><span><font color=blue>#region </font></span><span></span>\"; this.parentNode.nextSibling.childNodes[0].childNodes[2].innerHTML = oldDesc; for (var i = 1 + this.parentNode.parentNode.rowIndex; i < this.parentNode.parentNode.parentNode.childNodes.length; i++) { this.parentNode.parentNode.parentNode.childNodes[i].style.display=\"block\"; if ( this.parentNode.parentNode.parentNode.childNodes[i].childNodes[1].innerText.length > 0 ) { break; } } }'><font color=#808080 face='Tahoma'>+</font></span></td>");
		return retCode;
		}
	-	#endregion
	+	ICodeColorAdapter 成员
		/// <summary>
		/// 为注释着色，例如：对C#，包括///型、//型和/**/的注释
		/// </summary>
		/// <param name="src">输入源码</param>
		/// <returns>格式化后的源码</returns>
		public string ColorComment(string src)
		{
		string retCode = src;
		retCode = ColorBasicComment(retCode);
		retCode = ColorXmlComment(retCode);
		return retCode;
		}
		/// <summary>
		/// 为关键字着色
		/// </summary>
		/// <param name="src">输入源码</param>
		/// <returns>格式化后的源码</returns>
		public string ColorKeyword(string src)
		{
		System.Text.StringBuilder retCode = new System.Text.StringBuilder();
		string[] lines = src.Split('\n');
		if (lines != null && lines.Length > 0)
		{
		bool isInComment = false;
		foreach (string line in lines)
		{
		string formatedLine = line.Trim();
		if (new Regex(@"(^|[ \t]+)(/\*)").Match(line).Success)
		{
		isInComment = true;
		}
		if (!isInComment)
		{
		formatedLine = ColorKeyword(line, KEYWORD_LIST);
		}
		if (new Regex(@"\*/[ \t\r]*$").Match(line).Success)
		{
		isInComment = false;
		}
		retCode.Append(formatedLine + "\n");
		}
		}
		return retCode.ToString();
		}
		/// <summary>
		/// 使代码支持折叠显示
		/// </summary>
		/// <param name="src">输入源码</param>
		/// <returns>格式化后的源码</returns>
		public string CollapseCode(string src)
		{
		string retCode = src;
		retCode = DrawCollapseFrameTable(retCode);
		retCode = CollapseRegion(retCode);
		return retCode;
		}
		/// <summary>
		/// 代码缩进
		/// </summary>
		/// <param name="src">输入源码</param>
		/// <returns>格式化后的源码</returns>
		public string IndentCode(string src)
		{
		System.Text.StringBuilder retCode = new System.Text.StringBuilder();
		int indent = 0;
		string [] lines = src.Split('\n');
		foreach (string line in lines)
		{
		string formatedLine = line.Trim();
		Regex r = new Regex(@"\}(\}|\s)*;?\s*$");
		if (r.Match(line).Success)
		{
		indent--;
		}
		for (int i = 0; i < indent; i++)
		{
		formatedLine = "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;" + formatedLine;
		}
		retCode.Append(formatedLine + "\n");
		if (line.EndsWith("{"))
		{
		indent++;
		}
		else if (line.StartsWith("{"))
		{
		indent++;
		}
		}
		return retCode.ToString();
		}
	-	#endregion
		}
		}