public virtual void IndentLine(TextEditor editor, DocumentLine line)
{
var document = editor.Document;
var lineNumber = line.LineNumber;
if (lineNumber > 1)
{
var previousLine = document.GetLineByNumber(lineNumber - 1);
var indentation = DocumentUtilities.GetWhitespaceAfter(document, previousLine.Offset);
// copy indentation to line
var newIndentation = DocumentUtilities.GetWhitespaceAfter(document, line.Offset);
document.Replace(line.Offset, newIndentation.Length, indentation);
}
}
static void TryIndent(TextEditor editor, int begin, int end)
{
var currentIndentation = "";
var tagStack = new Stack <string>();
var document = editor.Document;
var tab = editor.Options.IndentationString;
var nextLine = begin; // in #dev coordinates
var wasEmptyElement = false;
var lastType = XmlNodeType.XmlDeclaration;
using (var stringReader = new StringReader(document.Text)) {
var r = new XmlTextReader(stringReader)
{
XmlResolver = null
};
// prevent XmlTextReader from loading external DTDs
while (r.Read())
{
if (wasEmptyElement)
{
wasEmptyElement = false;
currentIndentation = tagStack.Count == 0 ? "" : tagStack.Pop();
}
if (r.NodeType == XmlNodeType.EndElement)
{
currentIndentation = tagStack.Count == 0 ? "" : tagStack.Pop();
}
while (r.LineNumber >= nextLine)
{
if (nextLine > end)
{
break;
}
if (lastType == XmlNodeType.CDATA || lastType == XmlNodeType.Comment)
{
nextLine++;
continue;
}
// set indentation of 'nextLine'
var line = document.GetLineByNumber(nextLine);
var lineText = document.GetText(line);
string newText;
// special case: opening tag has closing bracket on extra line: remove one indentation level
if (lineText.Trim() == ">")
{
newText = tagStack.Peek() + lineText.Trim();
}
else
{
newText = currentIndentation + lineText.Trim();
}
document.SmartReplaceLine(line, newText);
nextLine++;
}
if (r.LineNumber > end)
{
break;
}
wasEmptyElement = r.NodeType == XmlNodeType.Element && r.IsEmptyElement;
string attribIndent = null;
if (r.NodeType == XmlNodeType.Element)
{
tagStack.Push(currentIndentation);
if (r.LineNumber < begin)
{
currentIndentation = DocumentUtilities.GetIndentation(editor.Document, r.LineNumber);
}
if (r.Name.Length < 16)
{
attribIndent = currentIndentation + new string(' ', 2 + r.Name.Length);
}
else
{
attribIndent = currentIndentation + tab;
}
currentIndentation += tab;
}
lastType = r.NodeType;
if (r.NodeType == XmlNodeType.Element && r.HasAttributes)
{
var startLine = r.LineNumber;
r.MoveToAttribute(0); // move to first attribute
if (r.LineNumber != startLine)
{
attribIndent = currentIndentation; // change to tab-indentation
}
r.MoveToAttribute(r.AttributeCount - 1);
while (r.LineNumber >= nextLine)
{
if (nextLine > end)
{
break;
}
// set indentation of 'nextLine'
var line = document.GetLineByNumber(nextLine);
var newText = attribIndent + document.GetText(line).Trim();
document.SmartReplaceLine(line, newText);
nextLine++;
}
}
}
//r.Close();
}
}
