private void handleFileSwap(LinkedListIterator<FileSystemEventArgs> renameIterator, LinkedListIterator<FileSystemEventArgs> deleteIterator)
{
FileSystemEventArgs delete = deleteIterator.Current;
Utils.LinkedListIterator<FileSystemEventArgs> innerIterator = renameIterator.Clone();
while (innerIterator.hasNext())
{
FileSystemEventArgs nextChange = innerIterator.Next();
if(nextChange == delete) {
return;
}
RenamedEventArgs erlierRename = renameIterator.Current as RenamedEventArgs;
RenamedEventArgs rename = nextChange as RenamedEventArgs;
if (rename != null && Object.Equals(erlierRename.OldFullPath, rename.FullPath))
{
//this is a file swap!
renameIterator.Remove();
innerIterator.Remove();
deleteIterator.Current = new FileSystemEventArgs(
WatcherChangeTypes.Changed,
Path.GetDirectoryName(erlierRename.OldFullPath),
Path.GetFileName(erlierRename.OldFullPath));
//remove any events related to temporary swap file (rename.OldFullPath)
string tmpFileFullPath = rename.OldFullPath;
Utils.LinkedListIterator<FileSystemEventArgs> tmpIterator = renameIterator.Clone();
while (tmpIterator.HasPrevious())
{
FileSystemEventArgs e = tmpIterator.Previous();
if(Object.Equals(e.FullPath, tmpFileFullPath))
{
if(e.ChangeType == WatcherChangeTypes.Renamed){
handleRenamed(tmpIterator);
if (tmpIterator.Current != null && tmpIterator.Current.ChangeType == WatcherChangeTypes.Renamed)
{
tmpFileFullPath = ((RenamedEventArgs)tmpIterator.Current).OldFullPath;
}
}
if (tmpIterator.Current != null)
{
tmpIterator.Remove();
}
}
}
}
}
}