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 static string GetExistingParentDirectory(string directory)
{
do
{
string parentDirectory = PathHelper.GetParentDirectory(directory);
if (string.Equals(parentDirectory, directory, StringComparison.OrdinalIgnoreCase))
{
return((string)null);
}
directory = parentDirectory;
}while (!FileChangeWatcher.DirectoryIsAccessible(directory));
return(directory);
}
