Dogcows Code - chaz/openbox/blob - tools/xdg-autostart/xdg-autostart

   1 #!/usr/bin/env python
   2
   3 # xdg-autostart runs things based on the XDG autostart specification
   4 # Copyright (C) 2008       Dana Jansens
   5 #
   6 # XDG autostart specification can be found here:
   7 # http://standards.freedesktop.org/autostart-spec/
   8 #
   9 #
  10 #
  11 # LICENSE:
  12 #   This program is free software; you can redistribute it and/or modify
  13 #   it under the terms of the GNU General Public License as published by
  14 #   the Free Software Foundation; either version 2 of the License, or
  15 #   (at your option) any later version.
  16 #
  17 #   This program is distributed in the hope that it will be useful,
  18 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 #   GNU General Public License for more details.
  21
  22 ME="xdg-autostart"
  23 VERSION="1.0"
  24
  25 import os, glob, sys
  26 try:
  27     from xdg import BaseDirectory
  28     from xdg.DesktopEntry import DesktopEntry
  29     from xdg.Exceptions import ParsingError
  30 except ImportError:
  31     print
  32     print "ERROR:", ME, "requires PyXDG to be installed"
  33     print
  34     sys.exit(1)
  35
  36 def main(argv=sys.argv):
  37     if "--help" in argv[1:]:
  38         show_help()
  39         return 0
  40     if "--version" in argv[1:]:
  41         show_version()
  42         return 0
  43
  44     # get the autostart directories
  45     autodirs = BaseDirectory.load_config_paths("autostart")
  46
  47     # find all the autostart files
  48     files = []
  49     for dir in autodirs:
  50         for path in glob.glob(os.path.join(dir, '*.desktop')):
  51             try:
  52                 autofile = AutostartFile(path)
  53             except ParsingError:
  54                 print "Invalid .desktop file: " + path
  55             else:
  56                 if not autofile in files:
  57                     files.append(autofile)
  58
  59     list = False
  60     if "--list" in argv[1:]:
  61         list = True
  62         argv.remove("--list")
  63
  64     # run them !
  65     environments = argv[1:]
  66     for autofile in files:
  67         if list: autofile.display(environments)
  68         else: autofile.run(environments)
  69
  70 class AutostartFile:
  71     def __init__(self, path):
  72         self.path = path
  73         self.filename = os.path.basename(path)
  74         self.dirname = os.path.dirname(path)
  75         self.de = DesktopEntry(path)
  76
  77     def __eq__(self, other):
  78         return self.filename == other.filename
  79
  80     def __str__(self):
  81         return self.path + " : " + self.de.getName()
  82
  83     def _isexecfile(path):
  84         return os.access(path, os.X_OK)
  85
  86     def _findFile(self, path, search, match_func):
  87         # check empty path
  88         if not path: return None
  89         # check absolute path
  90         if path[0] == '/':
  91             if match_func(path): return path
  92             else: return None
  93             # check relative path
  94             for dirname in search.split(os.pathsep):
  95                 if dirname != "":
  96                     candidate = os.path.join(dirname, path)
  97                     if (match_func(candidate)): return candidate
  98
  99     def _alert(self, str, info=False):
 100         if info:
 101             print "\t ", str
 102         else:
 103             print "\t*", str
 104
 105     def _showInEnvironment(self, envs, verbose=False):
 106         default = not self.de.getOnlyShowIn()
 107         noshow = False
 108         force = False
 109         for i in self.de.getOnlyShowIn():
 110             if i in envs: force = True
 111         for i in self.de.getNotShowIn():
 112             if i in envs: noshow = True
 113
 114         if verbose:
 115             if not default and not force:
 116                 s = ""
 117                 for i in self.de.getOnlyShowIn():
 118                     if s: s += ", "
 119                     s += i
 120                 self._alert("Excluded by: OnlyShowIn (" + s + ")")
 121             if default and noshow and not force:
 122                 s = ""
 123                 for i in self.de.getOnlyShowIn():
 124                     if s: s += ", "
 125                     s += i
 126                 self._alert("Excluded by: NotShowIn (" + s + ")")
 127         return (default and not noshow) or force
 128
 129     def _shouldRun(self, envs, verbose=False):
 130         if not self.de.getExec():
 131             if verbose: self._alert("Excluded by: Missing Exec field")
 132             return False
 133         if self.de.getHidden():
 134             if verbose: self._alert("Excluded by: Hidden")
 135             return False
 136         if self.de.getTryExec():
 137             if not self._findFile(self.de.getTryExec(), os.getenv("PATH"),
 138                                   self._isexecfile):
 139                 if verbose: self._alert("Excluded by: TryExec (" +
 140                                         self.de.getTryExec() + ")")
 141                 return False
 142         if not self._showInEnvironment(envs, verbose):
 143             return False
 144         return True
 145
 146     def display(self, envs):
 147         if self._shouldRun(envs):
 148             print "[*] " + self.de.getName()
 149         else:
 150             print "[ ] " + self.de.getName()
 151         self._alert("File: " + self.path, info=True)
 152         if self.de.getExec():
 153             self._alert("Executes: " + self.de.getExec(), info=True)
 154         self._shouldRun(envs, True)
 155         print
 156
 157     def run(self, envs):
 158         here = os.getcwd()
 159         if self.de.getPath():
 160             os.chdir(self.de.getPath())
 161         if self._shouldRun(envs):
 162             args = ["/bin/sh", "-c", "exec " + self.de.getExec()]
 163             os.spawnv(os.P_NOWAIT, args[0], args);
 164         os.chdir(here)
 165
 166 def show_help():
 167     print "Usage:", ME, "[OPTION]... [ENVIRONMENT]..."
 168     print
 169     print "This tool will run xdg autostart .desktop files"
 170     print
 171     print "OPTIONS"
 172     print "  --list        Show a list of the files which would be run"
 173     print "                Files which would be run are marked with an asterix"
 174     print "                symbol [*].  For files which would not be run,"
 175     print "                information is given for why they are excluded"
 176     print "  --help        Show this help and exit"
 177     print "  --version     Show version and copyright information"
 178     print
 179     print "ENVIRONMENT specifies a list of environments for which to run autostart"
 180     print "applications.  If none are specified, only applications which do not "
 181     print "limit themselves to certain environments will be run."
 182     print
 183     print "ENVIRONMENT can be one or more of:"
 184     print "  GNOME         Gnome Desktop"
 185     print "  KDE           KDE Desktop"
 186     print "  ROX           ROX Desktop"
 187     print "  XFCE          XFCE Desktop"
 188     print "  Old           Legacy systems"
 189     print
 190
 191 def show_version():
 192     print ME, VERSION
 193     print "Copyright (c) 2008        Dana Jansens"
 194     print
 195
 196 if __name__ == "__main__":
 197         sys.exit(main())