private static string Highlight(HighlightOptions options, string text)
{
switch (options.Language)
{
case "c#":
var csf = new CSharpFormat();
csf.LineNumbers = options.DisplayLineNumbers;
csf.Alternate = options.AlternateLineNumbers;
return(HttpUtility.HtmlDecode(csf.FormatCode(text)));
case "vb":
var vbf = new VisualBasicFormat();
vbf.LineNumbers = options.DisplayLineNumbers;
vbf.Alternate = options.AlternateLineNumbers;
return(vbf.FormatCode(text));
case "js":
var jsf = new JavaScriptFormat();
jsf.LineNumbers = options.DisplayLineNumbers;
jsf.Alternate = options.AlternateLineNumbers;
return(HttpUtility.HtmlDecode(jsf.FormatCode(text)));
case "html":
var htmlf = new HtmlFormat();
htmlf.LineNumbers = options.DisplayLineNumbers;
htmlf.Alternate = options.AlternateLineNumbers;
text = StripHtml(text).Trim();
string code = htmlf.FormatCode(HttpUtility.HtmlDecode(text)).Trim();
return(code.Replace("\r\n", "<br />").Replace("\n", "<br />"));
case "xml":
var xmlf = new HtmlFormat();
xmlf.LineNumbers = options.DisplayLineNumbers;
xmlf.Alternate = options.AlternateLineNumbers;
text = text.Replace("<br />", "\r\n");
text = StripHtml(text).Trim();
string xml = xmlf.FormatCode(HttpUtility.HtmlDecode(text)).Trim();
return(xml.Replace("\r\n", "<br />").Replace("\n", "<br />"));
case "tsql":
var tsqlf = new TsqlFormat();
tsqlf.LineNumbers = options.DisplayLineNumbers;
tsqlf.Alternate = options.AlternateLineNumbers;
return(HttpUtility.HtmlDecode(tsqlf.FormatCode(text)));
case "msh":
var mshf = new MshFormat();
mshf.LineNumbers = options.DisplayLineNumbers;
mshf.Alternate = options.AlternateLineNumbers;
return(HttpUtility.HtmlDecode(mshf.FormatCode(text)));
}
return(string.Empty);
}
/// <summary/>
public HtmlFormat()
{
const string regJavaScript = @"(?<=<script(?:\s.*?)?>).+?(?=</script>)";
const string regComment = @"<!--.*?-->";
const string regAspTag = @"<%@.*?%>|<%|%>";
const string regAspCode = @"(?<=<%).*?(?=%>)";
const string regTagDelimiter = @"(?:</?!?\??(?!%)|(?<!%)/?>)+";
const string regTagName = @"(?<=</?!?\??(?!%))[\w\.:-]+(?=.*>)";
const string regAttributes = @"(?<=<(?!%)/?!?\??[\w:-]+).*?(?=(?<!%)/?>)";
const string regEntity = @"&\w+;";
const string regAttributeMatch = @"(=?"".*?""|=?'.*?')|([\w:-]+)";
//the regex object will handle all the replacements in one pass
string regAll = "(" + regJavaScript + ")|(" + regComment + ")|("
+ regAspTag + ")|(" + regAspCode + ")|("
+ regTagDelimiter + ")|(" + regTagName + ")|("
+ regAttributes + ")|(" + regEntity + ")";
CodeRegex = new Regex(regAll, RegexOptions.IgnoreCase | RegexOptions.Singleline);
attribRegex = new Regex(regAttributeMatch, RegexOptions.Singleline);
csf = new CSharpFormat();
jsf = new JavaScriptFormat();
}