Source Code for Module zeroinstall.cmd.download

 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  from zeroinstall.support import tasks 
14   
15  syntax = "URI" 
16   
17 -def add_options(parser): 
18          select.add_options(parser) 
19          parser.add_option("", "--show", help=_("show where components are installed"), action='store_true') 
20   
21 -def handle(config, options, args): 
22          """@type config: L{zeroinstall.injector.config.Config} 
23          @type args: [str]""" 
24          if len(args) != 1: 
25                  raise UsageError() 
26   
27          app = config.app_mgr.lookup_app(args[0], missing_ok = True) 
28          if app is not None: 
29                  sels = app.get_selections() 
30   
31                  r = app.get_requirements() 
32                  do_select = r.parse_update_options(options) 
33                  iface_uri = sels.interface 
34          else: 
35                  iface_uri = model.canonical_iface_uri(args[0]) 
36                  do_select = True 
37   
38          if do_select or options.gui: 
39                  sels = select.get_selections(config, options, iface_uri, 
40                                          select_only = False, download_only = True, test_callback = None) 
41                  if not sels: 
42                          sys.exit(1)     # Aborted by user 
43          else: 
44                  dl = app.download_selections(sels) 
45                  if dl: 
46                          tasks.wait_for_blocker(dl) 
47                          tasks.check(dl) 
48   
49          if options.xml: 
50                  select.show_xml(sels) 
51          if options.show: 
52                  select.show_human(sels, config.stores) 
53                  if app is not None and do_select: 
54                          print(_("(use '0install update' to save the new parameters)")) 
55   
56  complete = select.complete 
57