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# -*- Mode: Python; py-indent-offset: 4 -*-
# vim: tabstop=4 shiftwidth=4 expandtab
#
# Copyright (C) 2005-2009 Johan Dahlin <johan@gnome.org>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
# USA
from __future__ import absolute_import
from ._gi import _API, Repository
# Force loading the GObject typelib so we have available the wrappers for
# base classes such as GInitiallyUnowned
import gi._gobject
import os
_versions = {}
_overridesdir = os.path.join(os.path.dirname(__file__), 'overrides')
def require_version(namespace, version):
repository = Repository.get_default()
if namespace in repository.get_loaded_namespaces():
loaded_version = repository.get_version(namespace)
if loaded_version != version:
raise ValueError('Namespace %s is already loaded with version %s' % \
(namespace, loaded_version))
if namespace in _versions and _versions[namespace] != version:
raise ValueError('Namespace %s already requires version %s' % \
(namespace, _versions[namespace]))
available_versions = repository.enumerate_versions(namespace)
if not available_versions:
raise ValueError('Namespace %s not available' % namespace)
if version not in available_versions:
raise ValueError('Namespace %s not available for version %s' % \
(namespace, version))
_versions[namespace] = version
def get_required_version(namespace):
return _versions.get(namespace, None)
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