全文本代码着色（带源码和示例）

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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(@"(/// *)<(.*)>", 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("""); int lengthOfQuot = """.Length; if (indexOfQuot >= 0) { while (indexOfQuot >= 0) {

                              retCode.Append(str.Substring(0, indexOfQuot + lengthOfQuot));

str = str.Substring(indexOfQuot + lengthOfQuot); indexOfQuot = str.IndexOf("""); 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("""); } } 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("(^.*>)(.*)(</.*$)"); 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("( )+").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("( )+").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 } }