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# coding: UTF8
# Copyright 2009 Thomas Jourdan
#
# 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 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import os
#import types
import ka_debug
_PREFIX = 'ep_'
_PYEXT = '.py'
_SEP = '_'
_extension_types = []
_extensions = []
def list_extensions(extension_type):
"""
pre: extension_type in _extension_types
"""
e_list = []
for extension_class in _extensions:
if extension_class.startswith(extension_type + _SEP):
e_list.append(extension_class)
e_list.sort()
return e_list
def list_extension_types():
return _extension_types
def create(extension_key, *params):
"""
pre: extension_key in _extensions
post: __return__ is not None
"""
a_module = __import__('ep_' + extension_key)
for key, value in a_module.__dict__.iteritems():
# print '-- ', str(type(value)), key
if str(type(value)) == "<type 'type'>":
a_class = getattr(a_module, key)
return a_class(*params)
# if len(params) == 0:
# return a_class()
# elif len(params) == 1:
# return a_class(params[0])
def _add(extension_type, extension_class):
if extension_type not in _extension_types:
_extension_types.append(extension_type)
e_key = extension_type + _SEP + extension_class
if e_key not in _extensions:
_extensions.append(e_key)
def scann():
bundle_path = ka_debug.DEBUG_PATH
if 'SUGAR_BUNDLE_PATH' in os.environ:
from sugar.activity import activity
bundle_path = activity.get_bundle_path()
ka_debug.info('searching for extensions in ' + bundle_path)
for element in os.listdir(bundle_path):
if element.startswith(_PREFIX) and element.endswith(_PYEXT) \
and os.path.isfile(os.path.join(bundle_path, element)):
name_parts = element.split(_SEP)
if len(name_parts) == 3:
_add(name_parts[1], name_parts[2].replace(_PYEXT, ''))
_extension_types.sort()
_extensions.sort()
scann()
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