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- # -*- Mode: Python; py-indent-offset: 4 -*-
- # pygtk - Python bindings for the GTK+ widget set.
- # Copyright (C) 1998-2002 James Henstridge
- #
- # pygtk.py: pygtk 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
-
- import fnmatch
- import glob
- import os
- import sys
-
- __all__ = ['require']
-
- _pygtk_dir_pat = 'gtk-[0-9].[0-9]'
-
- _pygtk_required_version = None
-
- def _get_available_versions():
- versions = {}
- for dir in sys.path:
- if not dir:
- dir = os.getcwd()
-
- if not os.path.isdir(dir):
- continue
-
- # if the dir is a pygtk dir, skip it
- if fnmatch.fnmatchcase(os.path.basename(dir), _pygtk_dir_pat):
- continue
-
- for filename in glob.glob(os.path.join(dir, _pygtk_dir_pat)):
- pathname = os.path.join(dir, filename)
-
- # skip non directories
- if not os.path.isdir(pathname):
- continue
-
- # skip empty directories
- if not os.listdir(pathname):
- continue
-
- if not versions.has_key(filename[-3:]):
- versions[filename[-3:]] = pathname
- return versions
-
- def require(version):
- global _pygtk_required_version
-
- if _pygtk_required_version != None:
- assert _pygtk_required_version == version, \
- "a different version of gtk was already required"
- return
-
- assert not sys.modules.has_key('gtk'), \
- "pygtk.require() must be called before importing gtk"
-
- versions = _get_available_versions()
- assert versions.has_key(version), \
- "required version '%s' not found on system" % version
-
- # remove any pygtk dirs first ...
- for dir in sys.path:
- if fnmatch.fnmatchcase(os.path.basename(dir), _pygtk_dir_pat):
- sys.path.remove(dir)
-
- # prepend the pygtk path ...
- sys.path.insert(0, versions[version])
-
- _pygtk_required_version = version
-