public static string ExtractCode(IClass c, DomRegion codeRegion, int indentationLine, out Action removeExtractedCodeAction)
{
ICSharpCode.TextEditor.Document.IDocument doc = GetDocument(c);
if (indentationLine < 1)
{
indentationLine = 1;
}
if (indentationLine >= doc.TotalNumberOfLines)
{
indentationLine = doc.TotalNumberOfLines;
}
LineSegment segment = doc.GetLineSegment(indentationLine - 1);
string mainLine = doc.GetText(segment);
string indentation = mainLine.Substring(0, mainLine.Length - mainLine.TrimStart().Length);
segment = doc.GetLineSegment(codeRegion.BeginLine - 1);
int startOffset = segment.Offset;
segment = doc.GetLineSegment(codeRegion.EndLine - 1);
int endOffset = segment.Offset + segment.Length;
StringReader reader = new StringReader(doc.GetText(startOffset, endOffset - startOffset));
removeExtractedCodeAction = delegate {
doc.Remove(startOffset, endOffset - startOffset);
doc.RequestUpdate(new ICSharpCode.TextEditor.TextAreaUpdate(ICSharpCode.TextEditor.TextAreaUpdateType.WholeTextArea));
doc.CommitUpdate();
};
// now remove indentation from extracted source code
string line;
StringBuilder b = new StringBuilder();
int endOfLastFilledLine = 0;
while ((line = reader.ReadLine()) != null)
{
int startpos;
for (startpos = 0; startpos < line.Length && startpos < indentation.Length; startpos++)
{
if (line[startpos] != indentation[startpos])
{
break;
}
}
if (startpos == line.Length)
{
// empty line
if (b.Length > 0)
{
b.AppendLine();
}
}
else
{
b.Append(line, startpos, line.Length - startpos);
b.AppendLine();
endOfLastFilledLine = b.Length;
}
}
b.Length = endOfLastFilledLine;
return(b.ToString());
}
protected string GetIndentation(ICSharpCode.TextEditor.Document.IDocument document, int line)
{
string lineText = document.GetText(document.GetLineSegment(line));
return(lineText.Substring(0, lineText.Length - lineText.TrimStart().Length));
}