bin/gpodder

   1 #!/usr/bin/env python
   2 # -*- coding: utf-8 -*-
   3
   4 #
   5 # gPodder - A media aggregator and podcast client
   6 # Copyright (c) 2005-2010 Thomas Perl and the gPodder Team
   7 #
   8 # gPodder is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 3 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # gPodder is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 #
  21
  22 """
  23 gPodder enables you to subscribe to RSS feeds and download
  24 podcast episodes from these feeds.
  25
  26 Downloaded podcasts can either be synchronized to portable
  27 MP3 players (including iPods) or played back on the user's
  28 desktop.
  29
  30 See gpo(1) for the command-line interface.
  31 """
  32
  33 import sys
  34 import os
  35 import os.path
  36 import platform
  37
  38 import gettext
  39
  40 import subprocess
  41
  42 try:
  43     import dbus
  44     import dbus.glib
  45     have_dbus = True
  46 except ImportError:
  47     print >>sys.stderr, """
  48     Warning: python-dbus not found. Disabling D-Bus support.
  49     """
  50     have_dbus = False
  51
  52 from optparse import OptionParser
  53
  54 if __name__ == '__main__':
  55     # Paths to important files
  56     gpodder_script = sys.argv[0]
  57     while os.path.islink(gpodder_script):
  58         gpodder_script = os.readlink(gpodder_script)
  59     gpodder_dir = os.path.join(os.path.dirname(gpodder_script), '..')
  60     prefix = os.path.abspath(os.path.normpath(gpodder_dir))
  61
  62     src_dir = os.path.join(prefix, 'src')
  63     data_dir = os.path.join(prefix, 'data')
  64     locale_dir = os.path.join(prefix, 'share', 'locale')
  65     ui_folder = os.path.join(prefix, 'share', 'gpodder', 'ui')
  66     credits_file = os.path.join(prefix, 'share', 'gpodder', 'credits.txt')
  67     images_folder = os.path.join(prefix, 'share', 'gpodder')
  68     icon_file = os.path.join(prefix, 'share', 'icons', 'hicolor', 'scalable', 'apps', 'gpodder.svg')
  69
  70     # The existence of this file tells us we're running on Maemo
  71     maemo_file = os.path.join(prefix, 'share', 'applications', 'hildon', 'gpodder.desktop')
  72
  73     if os.path.exists(src_dir) and os.path.exists(data_dir) and \
  74             not prefix.startswith('/usr'):
  75         # Run gPodder from local source folder (not installed)
  76         print >>sys.stderr, 'Using modules from', src_dir
  77         sys.path.insert(0, src_dir)
  78         print >>sys.stderr, 'Using resources from', data_dir
  79         locale_dir = os.path.join(data_dir, 'locale')
  80         ui_folder = os.path.join(data_dir, 'ui')
  81         credits_file = os.path.join(data_dir, 'credits.txt')
  82         images_folder = os.path.join(data_dir, 'images')
  83         icon_file = os.path.join(data_dir, 'gpodder.svg')
  84
  85     # on Mac OS X, read from the defaults database the locale of the user
  86     if platform.system() == 'Darwin' and 'LANG' not in os.environ:
  87         locale_cmd = ('defaults', 'read', 'NSGlobalDomain', 'AppleLocale')
  88         process = subprocess.Popen(locale_cmd, stdout=subprocess.PIPE)
  89         output, error_output = process.communicate()
  90         # the output is a string like 'fr_FR', and we need 'fr_FR.utf-8'
  91         user_locale = output.strip() + '.UTF-8'
  92         os.environ['LANG'] = user_locale
  93         print >>sys.stderr, 'Setting locale to', user_locale
  94
  95     # Set up the path to translation files
  96     gettext.bindtextdomain('gpodder', locale_dir)
  97
  98     import gpodder
  99
 100     # Enable i18n for gPodder translations
 101     _ = gpodder.gettext
 102
 103     # Set up paths to folder with GtkBuilder files and gpodder.svg
 104     gpodder.ui_folders.append(ui_folder)
 105     gpodder.credits_file = credits_file
 106     gpodder.images_folder = images_folder
 107     gpodder.icon_file = icon_file
 108
 109     s_usage = 'usage: %%prog [options]\n\n%s' % ( __doc__.strip() )
 110     s_version = '%%prog %s' % ( gpodder.__version__ )
 111
 112     parser = OptionParser( usage = s_usage, version = s_version)
 113
 114     parser.add_option("-v", "--verbose",
 115                       action="store_true", dest="verbose", default=False,
 116                       help=_("Print debugging output to stdout"))
 117
 118     parser.add_option("-m", "--maemo",
 119                       action="store_true", dest="diablo", default=False,
 120                       help=_("Start the Maemo 4 user interface"))
 121
 122     parser.add_option("-f", "--fremantle",
 123                       action="store_true", dest="fremantle", default=False,
 124                       help=_("Start the Maemo 5 user interface"))
 125
 126     parser.add_option('-s', '--subscribe', dest='subscribe', metavar='URL',
 127                       help=_('Subscribe to the given URL'))
 128
 129     # On Mac OS X, support the "psn" parameter for compatibility (bug 939)
 130     if sys.platform == 'darwin':
 131         parser.add_option('-p', '--psn', dest='macpsn', metavar='PSN',
 132                           help=_('Mac OS X application process number'))
 133
 134     (options, args) = parser.parse_args(sys.argv)
 135
 136     # Detect if we are running on Maemo 5 and if it's the case, do
 137     # force the "fremantle" option on automatically, so that clueless
 138     # users won't be reporting bogus bugs if they try to start gPodder
 139     # from the command line without the "--fremantle" switch :)
 140     if not options.fremantle and not options.diablo:
 141         try:
 142             if 'Maemo 5' in open('/etc/issue').read():
 143                 options.fremantle = True
 144                 print >>sys.stderr, 'Auto-detected: Maemo 5 (--fremantle)'
 145         except:
 146             pass
 147
 148     if options.fremantle or options.diablo:
 149         gpodder.icon_file = gpodder.icon_file.replace('.svg', '.png')
 150
 151     if options.fremantle:
 152         gpodder.ui.fremantle = True
 153         gpodder.ui_folders.insert(0, os.path.join(ui_folder, 'frmntl'))
 154     elif options.diablo or os.path.exists(maemo_file):
 155         gpodder.ui.diablo = True
 156         gpodder.ui_folders.insert(0, os.path.join(ui_folder, 'maemo'))
 157     else:
 158         gpodder.ui.desktop = True
 159         gpodder.ui_folders.insert(0, os.path.join(ui_folder, 'desktop'))
 160
 161     if options.verbose:
 162         from gpodder.liblogger import enable_verbose
 163         enable_verbose()
 164
 165     if have_dbus:
 166         # Try to find an already-running instance of gPodder
 167         session_bus = dbus.SessionBus()
 168
 169         # Obtain a reference to an existing instance; don't call get_object if
 170         # such an instance doesn't exist as it *will* create a new instance
 171         if session_bus.name_has_owner(gpodder.dbus_bus_name):
 172             try:
 173                 remote_object = session_bus.get_object(gpodder.dbus_bus_name, \
 174                         gpodder.dbus_gui_object_path)
 175             except dbus.exceptions.DBusException:
 176                 remote_object = None
 177         else:
 178             remote_object = None
 179     else:
 180         # No D-Bus available :/
 181         remote_object = None
 182
 183     if remote_object is not None:
 184         # An instance of GUI is already running
 185         print >>sys.stderr, 'Existing instance running - activating via D-Bus.'
 186         remote_object.show_gui_window(dbus_interface=gpodder.dbus_interface)
 187         if options.subscribe:
 188             remote_object.subscribe_to_url(options.subscribe)
 189     else:
 190         # gPodder is not yet running - create new instance
 191         from gpodder import gui
 192
 193         # check if we have an X11 connection (but not on Windows)
 194         if platform.system() != 'Windows' and \
 195                 not os.environ.get('DISPLAY', None):
 196             print >>sys.stderr, 'Cannot start gPodder: $DISPLAY is not set.'
 197             sys.exit(1)
 198
 199         if gpodder.ui.maemo:
 200             # Reduce our nice value to zero if we're on Maemo to
 201             # make the tablet not kill itself while updating feeds
 202             if os.nice(0) < 0:
 203                 os.nice(-os.nice(0))
 204
 205         gui.main(options)
 206