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 try:
  41     import dbus
  42     import dbus.glib
  43     have_dbus = True
  44 except ImportError:
  45     print >>sys.stderr, """
  46     Warning: python-dbus not found. Disabling D-Bus support.
  47     """
  48     have_dbus = False
  49
  50 from optparse import OptionParser
  51
  52 if __name__ == '__main__':
  53     # Paths to important files
  54     gpodder_script = sys.argv[0]
  55     if os.path.islink(gpodder_script):
  56         gpodder_script = os.readlink(gpodder_script)
  57     gpodder_dir = os.path.join(os.path.dirname(gpodder_script), '..')
  58     prefix = os.path.abspath(os.path.normpath(gpodder_dir))
  59
  60     src_dir = os.path.join(prefix, 'src')
  61     data_dir = os.path.join(prefix, 'data')
  62     locale_dir = os.path.join(prefix, 'share', 'locale')
  63     ui_folder = os.path.join(prefix, 'share', 'gpodder', 'ui')
  64     credits_file = os.path.join(prefix, 'share', 'gpodder', 'credits.txt')
  65     images_folder = os.path.join(prefix, 'share', 'gpodder')
  66     icon_file = os.path.join(prefix, 'share', 'icons', 'hicolor', 'scalable', 'apps', 'gpodder.svg')
  67
  68     # The existence of this file tells us we're running on Maemo
  69     maemo_file = os.path.join(prefix, 'share', 'applications', 'hildon', 'gpodder.desktop')
  70
  71     if os.path.exists(src_dir) and os.path.exists(data_dir) and \
  72             not prefix.startswith('/usr'):
  73         # Run gPodder from local source folder (not installed)
  74         print >>sys.stderr, 'Using modules from', src_dir
  75         sys.path.insert(0, src_dir)
  76         print >>sys.stderr, 'Using resources from', data_dir
  77         locale_dir = os.path.join(data_dir, 'locale')
  78         ui_folder = os.path.join(data_dir, 'ui')
  79         credits_file = os.path.join(data_dir, 'credits.txt')
  80         images_folder = os.path.join(data_dir, 'images')
  81         icon_file = os.path.join(data_dir, 'gpodder.svg')
  82
  83     # Set up the path to translation files
  84     gettext.bindtextdomain('gpodder', locale_dir)
  85
  86     import gpodder
  87
  88     # Enable i18n for gPodder translations
  89     _ = gpodder.gettext
  90
  91     # Set up paths to folder with GtkBuilder files and gpodder.svg
  92     gpodder.ui_folders.append(ui_folder)
  93     gpodder.credits_file = credits_file
  94     gpodder.images_folder = images_folder
  95     gpodder.icon_file = icon_file
  96
  97     s_usage = 'usage: %%prog [options]\n\n%s' % ( __doc__.strip() )
  98     s_version = '%%prog %s' % ( gpodder.__version__ )
  99
 100     parser = OptionParser( usage = s_usage, version = s_version)
 101
 102     parser.add_option("-v", "--verbose",
 103                       action="store_true", dest="verbose", default=False,
 104                       help=_("Print debugging output to stdout"))
 105
 106     parser.add_option("-m", "--maemo",
 107                       action="store_true", dest="diablo", default=False,
 108                       help=_("Start the Maemo 4 user interface"))
 109
 110     parser.add_option("-f", "--fremantle",
 111                       action="store_true", dest="fremantle", default=False,
 112                       help=_("Start the Maemo 5 user interface"))
 113
 114     parser.add_option('-s', '--subscribe', dest='subscribe', metavar='URL',
 115                       help=_('Subscribe to the given URL'))
 116
 117     (options, args) = parser.parse_args(sys.argv)
 118
 119     if options.fremantle or options.diablo:
 120         gpodder.icon_file = gpodder.icon_file.replace('.svg', '.png')
 121
 122     if options.fremantle:
 123         gpodder.ui.fremantle = True
 124         gpodder.ui_folders.insert(0, os.path.join(ui_folder, 'frmntl'))
 125     elif options.diablo or os.path.exists(maemo_file):
 126         gpodder.ui.diablo = True
 127         gpodder.ui_folders.insert(0, os.path.join(ui_folder, 'maemo'))
 128     else:
 129         gpodder.ui.desktop = True
 130         gpodder.ui_folders.insert(0, os.path.join(ui_folder, 'desktop'))
 131
 132     if options.verbose:
 133         from gpodder.liblogger import enable_verbose
 134         enable_verbose()
 135
 136     if have_dbus:
 137         # Try to find an already-running instance of gPodder
 138         session_bus = dbus.SessionBus()
 139
 140         # Obtain a reference to an existing instance; don't call get_object if
 141         # such an instance doesn't exist as it *will* create a new instance
 142         if session_bus.name_has_owner(gpodder.dbus_bus_name):
 143             try:
 144                 remote_object = session_bus.get_object(gpodder.dbus_bus_name, \
 145                         gpodder.dbus_gui_object_path)
 146             except dbus.exceptions.DBusException:
 147                 remote_object = None
 148         else:
 149             remote_object = None
 150     else:
 151         # No D-Bus available :/
 152         remote_object = None
 153
 154     if remote_object is not None:
 155         # An instance of GUI is already running
 156         print >>sys.stderr, 'Existing instance running - activating via D-Bus.'
 157         remote_object.show_gui_window(dbus_interface=gpodder.dbus_interface)
 158         if options.subscribe:
 159             remote_object.subscribe_to_url(options.subscribe)
 160     else:
 161         # gPodder is not yet running - create new instance
 162         from gpodder import gui
 163
 164         # check if we have an X11 connection (but not on Windows)
 165         if platform.system() != 'Windows' and \
 166                 not os.environ.get('DISPLAY', None):
 167             print >>sys.stderr, 'Cannot start gPodder: $DISPLAY is not set.'
 168             sys.exit(1)
 169
 170         if gpodder.ui.maemo:
 171             # Reduce our nice value to zero if we're on Maemo to
 172             # make the tablet not kill itself while updating feeds
 173             if os.nice(0) < 0:
 174                 os.nice(-os.nice(0))
 175
 176         gui.main(options)
 177