public FileSystemStalker(Folder folder, FileChangeTypes fileChangeTypes, FileChangedDelegate changedDelegate)
{
this.changedDelegate = changedDelegate;
if (!folder.Exists()) return;
watcher = new FileSystemWatcher(folder.FullName) {IncludeSubdirectories = true, EnableRaisingEvents = true};
if (AskedForEvent(fileChangeTypes, FileChangeTypes.Created)) watcher.Created += RaiseEvent;
if (AskedForEvent(fileChangeTypes, FileChangeTypes.Changed)) watcher.Changed += RaiseEvent;
if (AskedForEvent(fileChangeTypes, FileChangeTypes.Deleted)) watcher.Deleted += RaiseEvent;
if (AskedForEvent(fileChangeTypes, FileChangeTypes.Renamed)) watcher.Renamed += RaiseEvent;
}
private void RaiseFileChanged(String fullPath, FileChangedDelegate action)
{
FileStream input;
try
{
input = File.OpenRead(fullPath);
}
catch (Exception ex)
{
HandleError(ex);
if (!File.Exists(fullPath))
{
_changed.Remove(fullPath);
}
return;
}
_changed.Remove(fullPath);
fullPath = PrepareFullPath(fullPath);
using (input)
{
NotDisposableStream stream = new NotDisposableStream(input);
foreach (FileChangedDelegate callback in action.Enumerate())
{
try
{
input.Position = 0;
callback(fullPath, stream);
}
catch (Exception ex)
{
HandleError(ex);
}
}
}
}