/// <summary>
/// Applies Syntax Highlighting to the specified source according to its language.
/// </summary>
/// <param name="source">The text to transform</param>
/// <param name="language">The language used to highlight the text.</param>
/// <param name="linesToMark">The line numbers to apply bold emphasizing.</param>
/// <param name="linesToStrikethrough">The line numbers to apply strikethrough emphasizing.</param>
/// <returns>The result.</returns>
public string Highlight(string source, string language, int[] linesToMark, int[] linesToStrikethrough)
{
if (string.IsNullOrEmpty(language))
{
language = "C#";
}
HighlighterBase highlighter = this.GetHighlighter(language);
string parsedText = source;
if (highlighter != null)
{
source = HttpUtility.HtmlDecode(source);
parsedText = highlighter.Parse(source);
}
if (linesToMark != null)
{
parsedText = this.MarkLines(linesToMark, parsedText);
}
if (linesToStrikethrough != null)
{
parsedText = this.StrikethroughLines(linesToStrikethrough, parsedText);
}
return(parsedText);
}
/// <summary>
/// Parses source code.
/// </summary>
/// <param name="language">The language used to highlight the text.</param>
/// <returns>The highlighter.</returns>
protected HighlighterBase GetHighlighter(string language)
{
Register register = Register.Instance;
HighlighterBase highlighter = register.Highlighters[language];
if (highlighter == null)
{
return(null);
}
this.EnsureParser();
highlighter = highlighter.Create();
highlighter.Parser = this.htmlParser;
highlighter.ForceReset();
return(highlighter);
}
/// <summary>
/// Gets the highlighter with the specified name.
/// </summary>
public HighlighterBase this[string name]
{
get
{
HighlighterBase highlighter = null;
for (int i = 0; i < this.List.Count; i++)
{
highlighter = (HighlighterBase)this.List[i];
if (highlighter.TagValues.Contains(name.ToLower()))
{
return(highlighter);
}
}
return(null);
}
}
/// <summary>
/// Handles the match event.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void xmlScanner_Match(object sender, MatchEventArgs e)
{
if (e.Tag != null && e.Tag.ToLower() == "script")
{
if (e.Type == MatchType.StartTag)
{
this.language = e.Attributes["lang"];
if (this.language == null)
{
this.language = e.Attributes["language"];
}
if (this.language != null)
{
this.language = this.language.Replace("\"", "").Replace("'", "");
if (this.language.Length == 0)
{
this.language = null;
}
}
if (this.language != null)
{
HighlighterBase highlighter = Register.Instance.Highlighters[this.language];
if (highlighter != null)
{
highlighter = highlighter.Create();
highlighter.Parser = this.parser;
this.Child = highlighter.BuildEntryPointScanner(this.Tokenizer, this.ScannerResult);
}
else
{
this.language = null;
}
}
}
else if (e.Type == MatchType.EndTag)
{
this.language = null;
}
}
}
/// <summary>
/// Adds a highlighter to the register.
/// </summary>
/// <param name="highlighter">The highlighter to add.</param>
private void AddHighlighter(HighlighterBase highlighter)
{
this.highlighters.Add(highlighter);
}
/// <summary>
/// Saves a highlighter's configuration in the specified file.
/// </summary>
/// <param name="fileName">The name of the file which will store the information about the highlighter.</param>
/// <param name="highlighter">An <see cref="Wilco.SyntaxHighlighting.HighlighterBase"/> object.</param>
public static void ToFile(string fileName, HighlighterBase highlighter)
{
XmlDocument document = new XmlDocument();
XmlElement languageRootElement, languageElement;
if (File.Exists(fileName))
{
document.Load(fileName);
languageRootElement = (XmlElement)document.SelectSingleNode("//highlighter/languages");
if (languageRootElement != null)
{
languageElement = (XmlElement)document.SelectSingleNode(String.Format("//highlighter/languages/language[@name='{0}']", highlighter.Name));
if (languageElement != null)
{
languageRootElement.RemoveChild(languageElement);
}
}
}
else
{
document.AppendChild(document.CreateXmlDeclaration("1.0", "utf-8", "yes"));
XmlElement rootElement = document.CreateElement("highlighter");
document.AppendChild(rootElement);
languageRootElement = document.CreateElement("languages");
rootElement.AppendChild(languageRootElement);
}
// Store highlighter settings.
languageElement = document.CreateElement("language");
languageRootElement.AppendChild(languageElement);
languageElement.SetAttribute("name", highlighter.Name);
languageElement.SetAttribute("fullName", highlighter.FullName);
XmlElement tagRootElement = document.CreateElement("tagValues");
languageElement.AppendChild(tagRootElement);
XmlElement tagElement;
foreach (string tag in highlighter.TagValues)
{
tagElement = document.CreateElement("tag");
tagElement.InnerText = tag;
tagRootElement.AppendChild(tagElement);
}
XmlElement fileExtensionRootElement = document.CreateElement("fileExtensions");
languageElement.AppendChild(fileExtensionRootElement);
XmlElement fileExtensionElement;
foreach (string fileExtension in highlighter.FileExtensions)
{
fileExtensionElement = document.CreateElement("tag");
fileExtensionElement.InnerText = fileExtension;
fileExtensionRootElement.AppendChild(fileExtensionElement);
}
// Store scanner settings.
XmlElement scannerRootElement = document.CreateElement("scanners");
languageElement.AppendChild(scannerRootElement);
int scannerCounter = 0;
foreach (IScanner scanner in highlighter.Scanners)
{
SaveScanner(document, scannerRootElement, scanner, scannerCounter++, true);
}
document.Save(fileName);
}
/// <summary>
/// Removes an highlighter.
/// </summary>
/// <param name="highlighter">The highlighter to remove.</param>
public void Remove(HighlighterBase highlighter)
{
this.List.Remove(highlighter);
}
/// <summary>
/// Adds an highlighter.
/// </summary>
/// <param name="highlighter">The highlighter to add.</param>
/// <returns>Index of the added highlighter.</returns>
public int Add(HighlighterBase highlighter)
{
return(this.List.Add(highlighter));
}