zeroinstall/cmd/download.py

   1 """
   2 The B{0install download} command-line interface.
   3 """
   4
   5 # Copyright (C) 2011, Thomas Leonard
   6 # See the README file for details, or visit http://0install.net.
   7
   8 import sys
   9
  10 from zeroinstall import _
  11 from zeroinstall.cmd import UsageError, select
  12 from zeroinstall.injector import model
  13
  14 syntax = "URI"
  15
  16 def add_options(parser):
  17         select.add_options(parser)
  18         parser.add_option("", "--show", help=_("show where components are installed"), action='store_true')
  19
  20 def handle(config, options, args):
  21         if len(args) != 1:
  22                 raise UsageError()
  23
  24         app = config.app_mgr.lookup_app(args[0], missing_ok = True)
  25         if app is not None:
  26                 sels = app.get_selections()
  27
  28                 r = app.get_requirements()
  29                 do_select = r.parse_update_options(options)
  30                 iface_uri = sels.interface
  31         else:
  32                 iface_uri = model.canonical_iface_uri(args[0])
  33                 do_select = True
  34
  35         if do_select or options.gui:
  36                 sels = select.get_selections(config, options, iface_uri,
  37                                         select_only = False, download_only = True, test_callback = None)
  38                 if not sels:
  39                         sys.exit(1)     # Aborted by user
  40         else:
  41                 dl = app.download_selections(sels)
  42                 if dl:
  43                         tasks.wait_for_blocker(dl)
  44                         tasks.check(dl)
  45
  46         if options.xml:
  47                 select.show_xml(sels)
  48         if options.show:
  49                 select.show_human(sels, config.stores)
  50                 if app is not None and do_select:
  51                         print(_("(use '0install update' to save the new parameters)"))