/// <summary>
/// Creates a new HtmlRichTextWriter instance.
/// </summary>
/// <param name="htmlWriter">
/// The text writer where the raw HTML is written to.
/// The HtmlRichTextWriter does not take ownership of the htmlWriter;
/// disposing the HtmlRichTextWriter will not dispose the underlying htmlWriter!
/// </param>
/// <param name="options">Options that control the HTML output.</param>
public HtmlRichTextWriter(TextWriter htmlWriter, HtmlOptions options = null)
{
if (htmlWriter == null)
{
throw new ArgumentNullException("htmlWriter");
}
this.htmlWriter = htmlWriter;
this.options = options ?? new HtmlOptions();
}
/// <summary>
/// Produces HTML code for a section of the line, with <span class="colorName"> tags.
/// </summary>
public string ToHtml(int startOffset, int endOffset, HtmlOptions options = null)
{
StringWriter stringWriter = new StringWriter(CultureInfo.InvariantCulture);
using (var htmlWriter = new HtmlRichTextWriter(stringWriter, options)) {
WriteTo(htmlWriter, startOffset, endOffset);
}
return(stringWriter.ToString());
}
/// <summary>
/// Produces HTML code for the line, with <span class="colorName"> tags.
/// </summary>
public string ToHtml(HtmlOptions options = null)
{
StringWriter stringWriter = new StringWriter(CultureInfo.InvariantCulture);
using (var htmlWriter = new HtmlRichTextWriter(stringWriter, options)) {
WriteTo(htmlWriter);
}
return(stringWriter.ToString());
}
/// <summary>
/// Produces HTML code for a section of the line, with <span style="..."> tags.
/// </summary>
public string ToHtml(int offset, int length, HtmlOptions options = null)
{
StringWriter stringWriter = new StringWriter(CultureInfo.InvariantCulture);
using (var htmlWriter = new HtmlRichTextWriter(stringWriter, options)) {
htmlWriter.Write(this, offset, length);
}
return(stringWriter.ToString());
}
/// <summary>
/// Creates a HTML fragment from a part of a document.
/// </summary>
/// <param name="document">The document to create HTML from.</param>
/// <param name="highlighter">The highlighter used to highlight the document. <c>null</c> is valid and will create HTML without any highlighting.</param>
/// <param name="segment">The part of the document to create HTML for. You can pass <c>null</c> to create HTML for the whole document.</param>
/// <param name="options">The options for the HTML creation.</param>
/// <returns>HTML code for the document part.</returns>
public static string CreateHtmlFragment(IDocument document, IHighlighter highlighter, ISegment segment, HtmlOptions options)
{
if (document == null)
{
throw new ArgumentNullException("document");
}
if (options == null)
{
throw new ArgumentNullException("options");
}
if (highlighter != null && highlighter.Document != document)
{
throw new ArgumentException("Highlighter does not belong to the specified document.");
}
if (segment == null)
{
segment = new SimpleSegment(0, document.TextLength);
}
StringBuilder html = new StringBuilder();
int segmentEndOffset = segment.EndOffset;
IDocumentLine line = document.GetLineByOffset(segment.Offset);
while (line != null && line.Offset < segmentEndOffset)
{
HighlightedLine highlightedLine;
if (highlighter != null)
{
highlightedLine = highlighter.HighlightLine(line.LineNumber);
}
else
{
highlightedLine = new HighlightedLine(document, line);
}
SimpleSegment s = SimpleSegment.GetOverlap(segment, line);
if (html.Length > 0)
{
html.AppendLine("<br>");
}
html.Append(highlightedLine.ToHtml(s.Offset, s.EndOffset, options));
line = line.NextLine;
}
return(html.ToString());
}