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     if options.fremantle or options.diablo:
 137         gpodder.icon_file = gpodder.icon_file.replace('.svg', '.png')
 138
 139     if options.fremantle:
 140         gpodder.ui.fremantle = True
 141         gpodder.ui_folders.insert(0, os.path.join(ui_folder, 'frmntl'))
 142     elif options.diablo or os.path.exists(maemo_file):
 143         gpodder.ui.diablo = True
 144         gpodder.ui_folders.insert(0, os.path.join(ui_folder, 'maemo'))
 145     else:
 146         gpodder.ui.desktop = True
 147         gpodder.ui_folders.insert(0, os.path.join(ui_folder, 'desktop'))
 148
 149     if options.verbose:
 150         from gpodder.liblogger import enable_verbose
 151         enable_verbose()
 152
 153     if have_dbus:
 154         # Try to find an already-running instance of gPodder
 155         session_bus = dbus.SessionBus()
 156
 157         # Obtain a reference to an existing instance; don't call get_object if
 158         # such an instance doesn't exist as it *will* create a new instance
 159         if session_bus.name_has_owner(gpodder.dbus_bus_name):
 160             try:
 161                 remote_object = session_bus.get_object(gpodder.dbus_bus_name, \
 162                         gpodder.dbus_gui_object_path)
 163             except dbus.exceptions.DBusException:
 164                 remote_object = None
 165         else:
 166             remote_object = None
 167     else:
 168         # No D-Bus available :/
 169         remote_object = None
 170
 171     if remote_object is not None:
 172         # An instance of GUI is already running
 173         print >>sys.stderr, 'Existing instance running - activating via D-Bus.'
 174         remote_object.show_gui_window(dbus_interface=gpodder.dbus_interface)
 175         if options.subscribe:
 176             remote_object.subscribe_to_url(options.subscribe)
 177     else:
 178         # gPodder is not yet running - create new instance
 179         from gpodder import gui
 180
 181         # check if we have an X11 connection (but not on Windows)
 182         if platform.system() != 'Windows' and \
 183                 not os.environ.get('DISPLAY', None):
 184             print >>sys.stderr, 'Cannot start gPodder: $DISPLAY is not set.'
 185             sys.exit(1)
 186
 187         if gpodder.ui.maemo:
 188             # Reduce our nice value to zero if we're on Maemo to
 189             # make the tablet not kill itself while updating feeds
 190             if os.nice(0) < 0:
 191                 os.nice(-os.nice(0))
 192
 193         gui.main(options)
 194