mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-26 19:51:11 +00:00
112 lines
3.3 KiB
Python
112 lines
3.3 KiB
Python
# -*- Mode: Python -*-
|
|
# vi:si:et:sw=4:sts=4:ts=4
|
|
#
|
|
# gst-python
|
|
# Copyright (C) 2009 Alessandro Decina <alessandro.decina@collbora.co.uk>
|
|
#
|
|
# This library is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU Library General Public
|
|
# License as published by the Free Software Foundation; either
|
|
# version 2 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
|
|
# Library General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Library General Public
|
|
# License along with this library; if not, write to the
|
|
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
# Boston, MA 02111-1307, USA.
|
|
#
|
|
# Author: Alessandro Decina <alessandro.decina@collabora.co.uk>
|
|
|
|
# importer for uninstalled setup, see PEP
|
|
# http://www.python.org/dev/peps/pep-0302/
|
|
|
|
import os
|
|
import sys
|
|
import imp
|
|
|
|
class Loader(object):
|
|
def __init__(self, fileobj, filename, description):
|
|
self.fileobj = fileobj
|
|
self.filename = filename
|
|
self.description = description
|
|
|
|
def find_real_filename(self):
|
|
dlname = None
|
|
installed = False
|
|
for line in self.fileobj:
|
|
if len(line) > 7 and line[:7] == 'dlname=':
|
|
dlname = line[8:-2]
|
|
elif len(line) > 10 and line[:10] == 'installed=':
|
|
installed = line[10:-1] == 'yes'
|
|
|
|
if not dlname:
|
|
return None
|
|
|
|
if installed or os.path.dirname(self.filename).endswith('.libs'):
|
|
filename = os.path.join(os.path.dirname(self.filename), dlname)
|
|
else:
|
|
filename = os.path.join(os.path.dirname(self.filename), '.libs', dlname)
|
|
|
|
return filename
|
|
|
|
def load_module(self, name):
|
|
try:
|
|
module = sys.modules[name]
|
|
self.fileobj.close()
|
|
|
|
return module
|
|
except KeyError:
|
|
pass
|
|
|
|
filename = self.find_real_filename()
|
|
self.fileobj.close()
|
|
if filename is None:
|
|
raise ImportError("No module named %s" % name)
|
|
|
|
fileobj = file(filename, 'rb')
|
|
|
|
module = imp.new_module(name)
|
|
sys.modules[name] = module
|
|
|
|
imp.load_module(name, fileobj, filename, self.description)
|
|
fileobj.close()
|
|
|
|
return module
|
|
|
|
class Importer(object):
|
|
def find_module(self, name, path=None):
|
|
if path is None:
|
|
path = sys.path
|
|
|
|
for directory in path:
|
|
fileobj, filename, description = self.find_libtool_module(name, directory)
|
|
if fileobj is not None:
|
|
return Loader(fileobj, filename, description)
|
|
|
|
return None
|
|
|
|
def find_libtool_module(self, name, directory):
|
|
name = name.split(".")[-1]
|
|
absname = os.path.join(directory, name)
|
|
for suffix in ('.la', '.module.la'):
|
|
filename = absname + suffix
|
|
try:
|
|
fileobj = file(filename, 'rb')
|
|
except IOError:
|
|
continue
|
|
|
|
return fileobj, filename, (suffix, 'rb', imp.C_EXTENSION)
|
|
|
|
return None, None, None
|
|
|
|
importer = Importer()
|
|
|
|
def install():
|
|
sys.meta_path.append(importer)
|
|
|
|
def uninstall():
|
|
sys.meta_path.remove(importer)
|