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# -*- Mode: Python; py-indent-offset: 4 -*-
# pygtk - Python bindings for the GTK+ widget set.
# Copyright (C) 1998-2002 James Henstridge
# (C) 2005 Edward Hervey
#
# pygst.py: pygst version selection code.
#
# 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.
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
# This allows parallel installation of gst-python
#
# In order to have backward compatibility
import fnmatch
import glob
import os
import sys
__all__ = ['require']
_pygst_dir = '@PYGSTDIR@'
_pygst_version = '@GST_MAJORMINOR@'
_pygst_required_version = None
def require(version):
global _pygst_required_version
if _pygst_required_version != None:
assert _pygst_required_version == version, \
"a different version of gst was already required"
return
assert not sys.modules.has_key('gst'), \
"pygst.require() must be called before importing gst"
assert version == _pygst_version, \
"Only version '%s' is available" % version
# move the pygst path to the front
while _pygst_dir in sys.path:
sys.path.remove(_pygst_dir)
sys.path.insert(0, _pygst_dir)
_pygst_required_version = version
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