private static void WatchFile(string path, NNode <PathInfo> node, NTree <PathInfo> tree)
{
FileSystemWatcher watcher = new FileSystemWatcher();
watcher.Path = path;
/* Watch for changes in LastAccess and LastWrite times, and
* the renaming of files or directories. */
watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite
| NotifyFilters.FileName | NotifyFilters.DirectoryName | NotifyFilters.Size | NotifyFilters.CreationTime;
// Watch all files.
watcher.Filter = "";
watcher.IncludeSubdirectories = false;
// Add event handlers.
watcher.Changed += (o, e) =>
{
Console.WriteLine("File: " + e.FullPath + " " + e.ChangeType);
};
///TODO: Invalidate the size with a tag
watcher.Created += (o, e) =>
{
node.AddChild(new NNode <PathInfo> {
Value = new PathInfo {
Path = e.FullPath, IsFile = FastFileOperations.IsFile(e.FullPath), Size = 0
}
});
Console.WriteLine("File: " + e.FullPath + " " + e.ChangeType);
};
watcher.Deleted += (o, e) =>
{
var effectedNode = node.Children.FirstOrDefault(p => p.Value.Path == e.FullPath);
if (effectedNode == null)
{
Console.Error.WriteLine("Unexpected error: Cannot find {0} in file tree.", e.FullPath);
}
else
{
Console.WriteLine("File: " + e.FullPath + " " + e.ChangeType);
tree.RemoveNode(effectedNode);
}
};
watcher.Renamed += (o, e) =>
{
// Specify what is done when a file is renamed.
Console.WriteLine("File: {0} renamed to {1}", e.OldFullPath, e.FullPath);
var effectedNode = node.Children.FirstOrDefault(p => p.Value.Path == e.OldFullPath);
if (effectedNode == null)
{
Console.Error.WriteLine("Unexpected error: Cannot find {0} in file tree.", e.FullPath);
}
else
{
effectedNode.Value.Path = e.FullPath;
}
};
watcher.Error += watcher_Error;
// Begin watching.
watcher.EnableRaisingEvents = true;
}
