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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 # support overrides in different directories than our gi module from pkgutil import extend_path __path__ = extend_path(__path__, __name__) import sys import os import importlib import types _static_binding_error = ('When using gi.repository you must not import static ' 'modules like "gobject". Please change all occurrences ' 'of "import gobject" to "from gi.repository import GObject". ' 'See: https://bugzilla.gnome.org/show_bug.cgi?id=709183') # we can't have pygobject 2 loaded at the same time we load the internal _gobject if 'gobject' in sys.modules: raise ImportError(_static_binding_error) from . import _gi from ._gi import _API from ._gi import Repository from ._gi import PyGIDeprecationWarning from ._gi import PyGIWarning _API = _API # pyflakes PyGIDeprecationWarning = PyGIDeprecationWarning PyGIWarning = PyGIWarning _versions = {} _overridesdir = os.path.join(os.path.dirname(__file__), 'overrides') # Needed for compatibility with "pygobject.h"/pygobject_init() _gobject = types.ModuleType("gi._gobject") sys.modules[_gobject.__name__] = _gobject _gobject._PyGObject_API = _gi._PyGObject_API _gobject.pygobject_version = _gi.pygobject_version version_info = _gi.pygobject_version[:] __version__ = "{0}.{1}.{2}".format(*version_info) class _DummyStaticModule(types.ModuleType): __path__ = None def __getattr__(self, name): raise AttributeError(_static_binding_error) sys.modules['glib'] = _DummyStaticModule('glib', _static_binding_error) sys.modules['gobject'] = _DummyStaticModule('gobject', _static_binding_error) sys.modules['gio'] = _DummyStaticModule('gio', _static_binding_error) sys.modules['gtk'] = _DummyStaticModule('gtk', _static_binding_error) sys.modules['gtk.gdk'] = _DummyStaticModule('gtk.gdk', _static_binding_error) def check_version(version): if isinstance(version, str): version_list = tuple(map(int, version.split("."))) else: version_list = version if version_list > version_info: raise ValueError(( "pygobject's version %s required, and available version " "%s is not recent enough") % (version, __version__) ) def require_version(namespace, version): """ Ensures the correct versions are loaded when importing `gi` modules. :param namespace: The name of module to require. :type namespace: str :param version: The version of module to require. :type version: str :raises ValueError: If module/version is already loaded, already required, or unavailable. :Example: .. code-block:: python import gi gi.require_version('Gtk', '3.0') """ repository = Repository.get_default() if sys.version_info[0] <= 2: if not isinstance(version, basestring): raise ValueError('Namespace version needs to be a string.') else: if not isinstance(version, str): raise ValueError('Namespace version needs to be a string.') 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 require_versions(requires): """ Utility function for consolidating multiple `gi.require_version()` calls. :param requires: The names and versions of modules to require. :type requires: dict :Example: .. code-block:: python import gi gi.require_versions({'Gtk': '3.0', 'GLib': '2.0', 'Gio': '2.0'}) """ for module_name, module_version in requires.items(): require_version(module_name, module_version) def get_required_version(namespace): return _versions.get(namespace, None) def require_foreign(namespace, symbol=None): """Ensure the given foreign marshaling module is available and loaded. :param str namespace: Introspection namespace of the foreign module (e.g. "cairo") :param symbol: Optional symbol typename to ensure a converter exists. :type symbol: str or None :raises: ImportError :Example: .. code-block:: python import gi import cairo gi.require_foreign('cairo') """ try: _gi.require_foreign(namespace, symbol) except Exception as e: raise ImportError(str(e)) importlib.import_module('gi.repository', namespace)