/// <summary>
/// Creates a HTML fragment for the selected part of the document.
/// </summary>
public static string CreateHtmlFragmentForSelection(TextArea textArea, HtmlOptions options)
{
if (textArea == null)
{
throw new ArgumentNullException("textArea");
}
if (options == null)
{
throw new ArgumentNullException("options");
}
DocumentHighlighter highlighter = textArea.GetService(typeof(DocumentHighlighter)) as DocumentHighlighter;
StringBuilder html = new StringBuilder();
foreach (ISegment selectedSegment in textArea.Selection.Segments)
{
html.AppendLine(CreateHtmlFragment(textArea.Document, highlighter, selectedSegment, options));
}
return(html.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.</param>
/// <param name="segment">The part of the document to create HTML for. You can pass null 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(TextDocument document, DocumentHighlighter highlighter, ISegment segment, HtmlOptions options)
{
if (document == null)
{
throw new ArgumentNullException("document");
}
if (options == null)
{
throw new ArgumentNullException("options");
}
if (segment == null)
{
segment = new SimpleSegment(0, document.TextLength);
}
StringBuilder html = new StringBuilder();
int segmentEndOffset = segment.EndOffset;
DocumentLine line = document.GetLineByOffset(segment.Offset);
while (line != null && line.Offset < segmentEndOffset)
{
HighlightedLine highlightedLine;
if (highlighter != null)
{
highlightedLine = highlighter.HighlightLine(line);
}
else
{
highlightedLine = new HighlightedLine(line);
}
SimpleSegment s = segment.GetOverlap(line);
if (html.Length > 0)
{
html.AppendLine("<br>");
}
html.Append(highlightedLine.ToHtml(s.Offset, s.EndOffset, options));
line = line.NextLine;
}
return(html.ToString());
}
/// <summary>
/// Escapes text and writes the result to the StringBuilder.
/// </summary>
internal static void EscapeHtml(StringBuilder b, string text, HtmlOptions options)
{
int spaceCount = -1;
foreach (char c in text)
{
if (c == ' ')
{
if (spaceCount < 0)
{
b.Append(" ");
}
else
{
spaceCount++;
}
}
else if (c == '\t')
{
if (spaceCount < 0)
{
spaceCount = 0;
}
spaceCount += options.TabSize;
}
else
{
if (spaceCount == 1)
{
b.Append(' ');
}
else if (spaceCount >= 1)
{
for (int i = 0; i < spaceCount; i++)
{
b.Append(" ");
}
}
spaceCount = 0;
switch (c)
{
case '<':
b.Append("<");
break;
case '>':
b.Append(">");
break;
case '&':
b.Append("&");
break;
case '"':
b.Append(""");
break;
default:
b.Append(c);
break;
}
}
}
for (int i = 0; i < spaceCount; i++)
{
b.Append(" ");
}
}