#!/usr/bin/env python
#
#  File: plugins.py
# 
#  Copyright (C) 2008 Christopher R. Gabriel <cgabriel@truelite.it> 
# 
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
# 

import os
import os.path
import imp
import sys

def load_plugins(pluginpath=None, nick="octofuss"):
	"""return a list of all available plugins
	in the given directory"""

	if not pluginpath:
		pluginpath = os.environ.get(nick.upper() + "_PLUGINS", "plugins")

	# if the plugin path need to be auto-discovered
	# starting from a specified module
	#pluginpath = os.path.join(os.path.dirname(imp.find_module("octofussd")[1]), "extensions/")
	#pluginpath = "."
	pluginfiles = [fname[:-3] for fname in os.listdir(pluginpath) if fname.endswith(".py") and not fname.startswith(".") and not fname.endswith("~")]

	for fname in sorted(pluginfiles):
		oldpath = sys.path
		try:
			sys.path.append(os.path.abspath(pluginpath))
			res = imp.load_source(fname, os.path.join(pluginpath, fname) + ".py")
		finally:
			sys.path = oldpath
		yield res