summaryrefslogtreecommitdiff
path: root/pygst.py.in
blob: f58653b42f17883b35b8e6d563207426da7f6448 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
# -*- 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" % pygst_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