0launch

   1 #!/usr/bin/env python
   2 import os, sys
   3 from optparse import OptionParser
   4
   5 from zeroinstall.injector import model, download, autopolicy, run
   6
   7 parser = OptionParser(usage="usage: %prog [options] interface [args]\n"
   8                             "       %prog --list [search-term]")
   9 parser.add_option("-c", "--console", help="never use GUI", action='store_false', dest='gui')
  10 parser.add_option("-d", "--download-only", help="fetch but don't run", action='store_true')
  11 parser.add_option("-g", "--gui", help="show graphical policy editor", action='store_true')
  12 parser.add_option("-l", "--list", help="list all known interfaces", action='store_true')
  13 parser.add_option("-q", "--quiet", help="suppress informational messages", action='store_true')
  14 parser.add_option("-r", "--refresh", help="refresh all used interfaces", action='store_true')
  15 parser.add_option("-v", "--verbose", help="more verbose output", action='store_true')
  16 parser.add_option("-V", "--version", help="display version information", action='store_true')
  17 parser.disable_interspersed_args()
  18
  19 (options, args) = parser.parse_args()
  20
  21 if options.list:
  22         if len(args) == 0:
  23                 match = None
  24         elif len(args) == 1:
  25                 match = args[0].lower()
  26         else:
  27                 parser.print_help()
  28                 sys.exit(1)
  29         from zeroinstall.injector import reader
  30         for i in reader.list_all_interfaces():
  31                 if match and match not in i.lower(): continue
  32                 print i
  33         sys.exit(0)
  34
  35 if options.version:
  36         import zeroinstall
  37         print "0launch (zero-install) " + zeroinstall.version
  38         print "Copyright (C) 2005 Thomas Leonard"
  39         print "This program comes with ABSOLUTELY NO WARRANTY,"
  40         print "to the extent permitted by law."
  41         print "You may redistribute copies of this program"
  42         print "under the terms of the GNU General Public License."
  43         print "For more information about these matters, see the file named COPYING."
  44         sys.exit(0)
  45
  46 if len(args) < 1:
  47         parser.print_help()
  48         sys.exit(1)
  49
  50 if options.gui is None and os.environ.get('DISPLAY', None):
  51         if options.refresh:
  52                 options.gui = True
  53         else:
  54                 # Decide whether to use the GUI or not...
  55                 try:
  56                         test_policy = autopolicy.AutoPolicy(args[0], False, quiet = True)
  57                         test_policy.recalculate()
  58                         test_policy.start_downloading_impls()
  59                 except autopolicy.NeedDownload:
  60                         if not options.quiet:
  61                                 print "Need to download; switching to GUI mode"
  62                         options.gui = True
  63
  64 if options.gui:
  65         interface_uri = 'http://0install.net/2005/interfaces/injector-gui'
  66         prog_args = args[:]
  67         if options.download_only:
  68                 options.download_only = False
  69                 prog_args.insert(0, '--download-only')
  70         if options.refresh:
  71                 options.refresh = False
  72                 prog_args.insert(0, '--refresh')
  73 else:
  74         interface_uri = args[0]
  75         prog_args = args[1:]
  76
  77 # Singleton instance used everywhere...
  78 policy = autopolicy.AutoPolicy(interface_uri, True,
  79                                 quiet = bool(options.quiet),
  80                                 verbose = bool(options.verbose),
  81                                 download_only = bool(options.download_only))
  82 policy.recalculate()
  83
  84 if options.refresh:
  85         for x in policy.walk_interfaces():
  86                 policy.begin_iface_download(x, False)
  87
  88 # Get interfaces...
  89 try:
  90         policy.wait_for_downloads()
  91 except model.SafeException, ex:
  92         print >>sys.stderr, ex
  93         sys.exit(1)
  94
  95 try:
  96         policy.execute(prog_args)
  97 except model.SafeException, ex:
  98         if policy.network_use != model.network_full:
  99                 if not options.quiet:
 100                         print >>sys.stderr, "Error. Retrying with network use = full"
 101                 policy.network_use = model.network_full
 102                 policy.recalculate()
 103                 try:
 104                         policy.execute(prog_args)
 105                 except model.SafeException, ex:
 106                         print >>sys.stderr, ex
 107         else:
 108                 print >>sys.stderr, ex