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# Copyright (C) 2006-2007 Red Hat, Inc.
#
# 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import os
import logging
import gobject
from sugar.bundle.activitybundle import ActivityBundle
from sugar.bundle.bundle import MalformedBundleException
from sugar import env
from sugar import util
# http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
def _get_data_dirs():
if os.environ.has_key('XDG_DATA_DIRS'):
return os.environ['XDG_DATA_DIRS'].split(':')
else:
return [ '/usr/local/share/', '/usr/share/' ]
def _load_mime_defaults():
defaults = {}
f = open(env.get_data_path('mime.defaults'), 'r')
for line in f.readlines():
line = line.strip()
if line and not line.startswith('#'):
mime = line[:line.find(' ')]
handler = line[line.rfind(' ') + 1:]
defaults[mime] = handler
f.close()
return defaults
class BundleRegistry(gobject.GObject):
"""Service that tracks the available activity bundles"""
__gsignals__ = {
'bundle-added': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT])),
'bundle-removed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT]))
}
def __init__(self):
gobject.GObject.__init__(self)
self._bundles = []
self._search_path = []
self._mime_defaults = _load_mime_defaults()
def get_bundle(self, bundle_id):
"""Returns an bundle given his service name"""
for bundle in self._bundles:
if bundle.get_bundle_id() == bundle_id:
return bundle
return None
def add_search_path(self, path):
"""Add a directory to the bundles search path"""
self._search_path.append(path)
self._scan_directory(path)
def __iter__(self):
return self._bundles.__iter__()
def _scan_directory(self, path):
if not os.path.isdir(path):
return
# Sort by mtime to ensure a stable activity order
bundles = {}
for f in os.listdir(path):
if not f.endswith('.activity'):
continue
try:
bundle_dir = os.path.join(path, f)
if os.path.isdir(bundle_dir):
bundles[bundle_dir] = os.stat(bundle_dir).st_mtime
except Exception, e:
logging.error('Error while processing installed activity ' \
'bundle: %s, %s, %s' % (f, e.__class__, e))
bundle_dirs = bundles.keys()
bundle_dirs.sort(lambda d1,d2: cmp(bundles[d1], bundles[d2]))
for dir in bundle_dirs:
try:
self.add_bundle(dir)
except Exception, e:
logging.error('Error while processing installed activity ' \
'bundle: %s, %s, %s' % (dir, e.__class__, e))
def add_bundle(self, bundle_path):
try:
bundle = ActivityBundle(bundle_path)
except MalformedBundleException:
return False
self._bundles.append(bundle)
self.emit('bundle-added', bundle)
return True
def remove_bundle(self, bundle_path):
for bundle in self._bundles:
if bundle.get_path() == bundle_path:
self._bundles.remove(bundle)
self.emit('bundle-removed', bundle)
return True
return False
def get_activities_for_type(self, mime_type):
result = []
for bundle in self._bundles:
if bundle.get_mime_types() and mime_type in bundle.get_mime_types():
if self.get_default_for_type(mime_type) == bundle.get_bundle_id():
result.insert(0, bundle)
else:
result.append(bundle)
return result
def get_default_for_type(self, mime_type):
if self._mime_defaults.has_key(mime_type):
return self._mime_defaults[mime_type]
else:
return None
def get_registry():
return _bundle_registry
_bundle_registry = BundleRegistry()
for path in _get_data_dirs():
bundles_path = os.path.join(path, 'activities')
_bundle_registry.add_search_path(bundles_path)
_bundle_registry.add_search_path(env.get_user_activities_path())
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