fs.rmrf.coffee

fs.rmrf = (dir, callback) ->
	# test if the directory exists.
	fs.exists dir, (exists) ->
		# return if the directory already is gone.
		return callback null unless exists
		fs.stat dir, (err, stats) ->
			# return if an error occured.
			return callback err if err	
			# unlink if it is a file, else continue, the recursive call.
			return fs.unlink dir, callback unless stats.isDirectory()		
			# reading the files in the next directory.
			count = 0
			fs.readdir dir, (err, files) ->
				# return if an error occurs.
				return callback err if err
				# remove the directory if it's empty.
				return fs.rmdir dir, callback if files.length < 1
				# remove the files and directories recursively.
				files.forEach (file) ->
					sub = path.join dir, file
					rmrf sub, (err) ->
						# return if an error occured.
						return callback err if err
						# remove directories.
						fs.rmdir dir, callback if ++count is files.length