/// <summary>
/// Updates the #endregion directives to match the names of the matching #region directive
/// and cleans up any unnecessary white space.
/// </summary>
/// <remarks>
/// This code is very similar to the Common region retrieval function, but since it
/// manipulates the cursors during processing the logic is different enough to warrant a
/// separate copy of the code.
/// </remarks>
/// <param name="textDocument">The text document to cleanup.</param>
internal void UpdateEndRegionDirectives(TextDocument textDocument)
{
if (!Settings.Default.Cleaning_UpdateEndRegionDirectives)
{
return;
}
var regionStack = new Stack <string>();
EditPoint cursor = textDocument.StartPoint.CreateEditPoint();
const string pattern = @"^[ \t]*#";
// Keep pushing cursor forwards (note ref cursor parameter) until finished.
while (cursor != null &&
TextDocumentHelper.TryFindNextMatch(startPoint: cursor, endPoint: ref cursor, pattern))
{
// Create a pointer to capture the text for this line.
EditPoint eolCursor = cursor.CreateEditPoint();
eolCursor.EndOfLine();
string regionText = cursor.GetText(eolCursor);
if (regionText.StartsWith("region ")) // Space required by compiler.
{
// Cleanup any whitespace in the region name.
string regionName = regionText.Substring(7);
string regionNameTrimmed = regionName.Trim();
if (regionName != regionNameTrimmed)
{
cursor.CharRight(7);
cursor.Delete(eolCursor);
cursor.Insert(regionNameTrimmed);
}
// Push the parsed region name onto the top of the stack.
regionStack.Push(regionNameTrimmed);
}
else if (regionText.StartsWith("endregion")) // Space may or may not be present.
{
if (regionStack.Count > 0)
{
// Do not trim the endRegionName in order to catch whitespace differences.
string endRegionName = regionText.Length > 9 ?
regionText.Substring(10) : string.Empty;
string matchingRegion = regionStack.Pop();
// Update if the strings do not match.
if (matchingRegion != endRegionName)
{
cursor.CharRight(9);
cursor.Delete(eolCursor);
cursor.Insert(" " + matchingRegion);
}
}
else
{
// This document is improperly formatted, abort.
return;
}
}
// Note: eolCursor may be outdated now if changes have been made.
cursor.EndOfLine();
}
}
