public void WatchFile(string filePath)
{
bool flag = false;
string str = PathHelper.GetDirectory(filePath);
if (!FileChangeWatcher.DirectoryIsAccessible(str))
{
flag = true;
str = FileChangeWatcher.GetExistingParentDirectory(str);
}
if (string.IsNullOrEmpty(str))
{
return;
}
FileChangeWatcher.WatchedDirectory watchedDirectory;
lock (this.syncLock)
{
if (!this.pathToWatchedDirectories.TryGetValue(str, out watchedDirectory))
{
watchedDirectory = new FileChangeWatcher.WatchedDirectory(this, str);
this.pathToWatchedDirectories.Add(str, watchedDirectory);
}
}
if (flag)
{
watchedDirectory.IncludeSubdirectories = flag;
}
watchedDirectory.WatchFile(filePath);
}
private bool CanWatchChildren(FileChangeWatcher.WatchedDirectory watchedDirectory)
{
bool canWatchChildren = true;
ErrorHandling.HandleBasicExceptions((Action)(() =>
{
if (PathHelper.DirectoryExists(watchedDirectory.Path) && Enumerable.Any <string>(Directory.EnumerateFileSystemEntries(watchedDirectory.Path)))
{
return;
}
canWatchChildren = false;
}), (Action <Exception>)(exception => canWatchChildren = false), new Func <Exception, bool>(ErrorHandling.BasicIOExceptionHandler));
return(canWatchChildren);
}
private void MoveToParentDirectory(FileChangeWatcher.WatchedDirectory watchedDirectory)
{
this.pathToWatchedDirectories.Remove(watchedDirectory.Path);
string existingParentDirectory = FileChangeWatcher.GetExistingParentDirectory(watchedDirectory.Path);
if (string.IsNullOrEmpty(existingParentDirectory))
{
return;
}
string[] strArray = Enumerable.ToArray <string>(watchedDirectory.FilePaths);
if (!this.pathToWatchedDirectories.TryGetValue(existingParentDirectory, out watchedDirectory))
{
watchedDirectory = new FileChangeWatcher.WatchedDirectory(this, existingParentDirectory);
this.pathToWatchedDirectories.Add(existingParentDirectory, watchedDirectory);
}
watchedDirectory.IncludeSubdirectories = true;
foreach (string filePath in strArray)
{
watchedDirectory.WatchFile(filePath);
}
}
private void OnFileChanged(FileChangeWatcher.WatchedDirectory sender, FileSystemEventArgs eventArgs, bool raiseEvent)
{
if (raiseEvent && this.FileChanged != null)
{
this.FileChanged((object)this, eventArgs);
}
if (!Monitor.TryEnter(this.syncLock))
{
return;
}
try
{
if (this.CanWatchChildren(sender))
{
return;
}
this.MoveToParentDirectory(sender);
sender.Dispose();
}
finally
{
Monitor.Exit(this.syncLock);
}
}
