原创：CodeHighlighter源代码格式化，代码缩进，关键词高亮着色(C#源码)|C/S框架网

原创：CodeHighlighter源代码格式化，代码缩进，关键词高亮着色(C#源码)

作者:C/S框架网|www.cscode.ne 发布日期:2020/02/21 01:57:31

原创：CodeHighlighter源代码格式化，代码缩进，关键词高亮着色(C#源码)

最近对C/S框架网管理员后台工具升级，特别升级了代码高亮工具，对网上收集的源码重新整理和测试。

花了整整1天时间！！！

以下代码调用CodeHighlighterEngine类直接渲染代码，转换为HTML格式的源码，但是没有格式化代码缩进，在HTML页面显示极度不友好！

C# Code (Generated By Code Highlighter) :

/// <summary>
/// 调用CodeHighlighterEngine类渲染代码，无代码格式！！HTML页面显示不友好
/// </summary>
/// <param name="code">原始源码</param>
/// <param name="languageKey">语言</param>
/// <param name="isShowLineNum">显示代码行数</param>
/// <returns></returns>
public static string GeneralCodeHighlight(string code, string languageKey, bool isShowLineNum)
{
    ActiproSoftware.SyntaxEditor.SyntaxLanguage lang = null; //尝试从缓存获取配置节
     CodeHighlighterConfiguration config = HttpContext.Current.Cache["CodeHighlighterConfig"] as CodeHighlighterConfiguration;

    //缓存不存在，重新从 web.config 获取并保存缓存
     if (config == null)
    {
        config = (CodeHighlighterConfiguration)ConfigurationManager.GetSection("codeHighlighter");
        HttpContext.Current.Cache.Insert("CodeHighlighterConfig", config);
    }

    //获取语言
     foreach (string key in config.LanguageConfigs.Keys)
    {
        if (key.ToLower() == languageKey.ToLower())
        {
            lang = CodeHighlighter.GetLanguage(config, key);
            break;
        }
    }

    //不明语言，不理会返回
     if (lang == null) return code;

    CodeHighlighterEngine engine = new CodeHighlighterEngine();
    engine.OutliningEnabled = false;
    engine.LineNumberMarginVisible = isShowLineNum;
    engine.SpacesInTabs = (byte)char.Parse("|");
    return engine.GenerateHtmlInline(string.Empty, code, lang);
}

//来源:C/S框架网(www.csframework.com) QQ:23404761

将原始源码转化为HTML格式,美化着色，代码高亮，代码缩进，并替换掉ActiproSoftware公司的代码注释。

C# Code:

/// <summary>
/// 将原始源码转化为HTML格式,美化着色，代码高亮
/// </summary>
/// <param name="originalCode">原始源码</param>
/// <param name="languageKey">语言</param>
/// <param name="isShowLineNum">显示代码行数</param>
/// <returns></returns>
public static string RenderSource(string originalCode, string languageKey, bool isShowLineNum)
{
string renderedCode = GeneralCodeHighlight(originalCode, languageKey, isShowLineNum);

//替换掉ActiproSoftware公司的代码注释
renderedCode = ReplaceMatchText(renderedCode, "", "");

//C#代码缩进
if (languageKey.ToLower() == "c#") renderedCode = IndentCodeCsharp(renderedCode);

//SQL代码缩进
if (languageKey.ToLower() == "sql") renderedCode = IndentCodeSql(renderedCode);

//C#断行符转化为HTML的断行符
renderedCode = renderedCode.Replace("\r\n", "<br/>");
renderedCode = renderedCode.Replace("\n", "<br/>");

string source_Header = "<STRONG><FONT color=#0000ff>" + languageKey + " Code:</FONT></STRONG></br></br>"; //显示粗体标题
string result = "<div class=\"codearea\">" + source_Header + renderedCode + "</div>";
return result;
}

/// <summary>
/// C#代码缩进
/// </summary>
/// <param name="src">输入源码</param>
/// <returns>格式化后的源码</returns>
private static string IndentCodeCsharp(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();
if (line.Trim() == "}")
{
indent--;
}
for (int i = 0; i < indent; i++)
{
//formatedLine = " " + formatedLine;
formatedLine = " " + formatedLine;//指表符
}

retCode.Append(formatedLine + "\n");

if (line.Trim() == "{" || line.EndsWith("{"))
{
indent++;
}
}
return retCode.ToString();
}

/// <summary>
/// SQL脚本代码缩进
/// </summary>
/// <param name="SQL"></param>
/// <returns></returns>
private static string IndentCodeSql(string SQL)
{
bool firstAs = false;
bool firstBegin = false;
bool firstAsBegin = false;

System.Text.StringBuilder retCode = new System.Text.StringBuilder();
int indent = 0;
string NoHtml;
string[] lines = SQL.Split('\n');
foreach (string line in lines)
{
NoHtml = RemoveHTML(line.Trim());

if (NoHtml == "AS" && firstAs == false) firstAs = true;
if (NoHtml == "BEGIN" && firstBegin == false) firstBegin = true;
if (NoHtml.Replace(" ", "").ToUpper() == "ASBEGIN" && firstAsBegin == false) firstAsBegin = true;

//代码段结束，减少缩进
if (line.Trim() == ")" || line.Trim().ToUpper() == "END")
{
if (indent > 0) indent--;
}

string formatedLine = line.Trim();

for (int i = 0; i < indent; i++)
{
formatedLine = " " + formatedLine;//指表符
}

//定义符合
if (NoHtml.StartsWith("@")) formatedLine = " " + formatedLine;//指表符

retCode.Append(formatedLine + "\n");

//代码段开始，增加缩进
if (line.Trim() == "(" || line.Trim().StartsWith("(") || line.Trim().EndsWith("(") || line.Trim().ToUpper() == "BEGIN" || line.Trim().ToUpper().EndsWith("BEGIN"))
{
indent++;
}

// AS BEGIN, AS, BEGIN
if ((firstAs && firstBegin) || firstAsBegin)
{
indent++;
firstAs = false; firstAsBegin = false; firstAsBegin = false;
}
}
return retCode.ToString();
}

//来源:C/S框架网(www.csframework.com) QQ:23404761

C# Code:

/// <summary>
/// C#正则表达式获取指定字符串(标识)范围的内容
/// </summary>
/// <param name="source">字符串</param>
/// <param name="startStr">开始字符串标识</param>
/// <param name="endStr">结束字符串标识</param>
/// <returns></returns>
public static string GetMatchText(string source, string startStr, string endStr)
{
    Regex rg = new Regex("(?<=(" + startStr + "))[.\\s\\S]*?(?=(" + endStr + "))", RegexOptions.Multiline | RegexOptions.Singleline);
    return rg.Match(source).Value;
}

/// <summary>
/// C#正则表达式替换指定字符串(标识)范围的内容
/// </summary>
/// <param name="source">字符串</param>
/// <param name="startStr">开始字符串标识</param>
/// <param name="endStr">结束字符串标识</param>
/// <param name="replaceStr">替换的内容</param>
/// <returns></returns>
public static string ReplaceMatchText(string source, string startStr, string endStr, string replaceStr)
{
    Regex rg = new Regex("(?<=(" + startStr + "))[.\\s\\S]*?(?=(" + endStr + "))", RegexOptions.Multiline | RegexOptions.Singleline);
    string value = rg.Match(source).Value;
    return source.Replace(startStr + value + endStr, replaceStr);
}

//来源:C/S框架网(www.csframework.com) QQ:23404761

网上下载CodeHighlighter组件，然后在自己的项目中添加引用下面的dll文件。

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参考文档：

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C# 格式化CodeHighlighter生成的SQL脚本高亮着色源码（CSFramework.com原创）
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