Source Code for Module zeroinstall.cmd.import

 1  """ 
 2  The B{0install import} 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 os 
 9   
10  from zeroinstall import SafeException, _, logger 
11  from zeroinstall.cmd import UsageError 
12  from zeroinstall.injector import gpg 
13  from zeroinstall.injector.iface_cache import PendingFeed 
14  from zeroinstall.support import tasks 
15  from xml.dom import minidom 
16   
17  syntax = "FEED" 
18   
19 -def add_options(parser): 
20          pass 
21   
22 -def handle(config, options, args): 
23          if not args: 
24                  raise UsageError() 
25   
26          for x in args: 
27                  if not os.path.isfile(x): 
28                          raise SafeException(_("File '%s' does not exist") % x) 
29                  logger.info(_("Importing from file '%s'"), x) 
30                  with open(x, 'rb') as signed_data: 
31                          data, sigs = gpg.check_stream(signed_data) 
32                          doc = minidom.parseString(data.read()) 
33                          uri = doc.documentElement.getAttribute('uri') 
34                          if not uri: 
35                                  raise SafeException(_("Missing 'uri' attribute on root element in '%s'") % x) 
36                          logger.info(_("Importing information about interface %s"), uri) 
37                          signed_data.seek(0) 
38   
39                          pending = PendingFeed(uri, signed_data) 
40   
41                          def run(): 
42                                  keys_downloaded = tasks.Task(pending.download_keys(config.fetcher), "download keys") 
43                                  yield keys_downloaded.finished 
44                                  tasks.check(keys_downloaded.finished) 
45                                  if not config.iface_cache.update_feed_if_trusted(uri, pending.sigs, pending.new_xml): 
46                                          blocker = config.trust_mgr.confirm_keys(pending) 
47                                          if blocker: 
48                                                  yield blocker 
49                                                  tasks.check(blocker) 
50                                          if not config.iface_cache.update_feed_if_trusted(uri, pending.sigs, pending.new_xml): 
51                                                  raise SafeException(_("No signing keys trusted; not importing")) 
52   
53                          task = tasks.Task(run(), "import feed") 
54   
55                          tasks.wait_for_blocker(task.finished) 
56   
57 -def complete(completion, args, cword): 
58          """@type completion: L{zeroinstall.cmd._Completion} 
59          @type args: [str] 
60          @type cword: int""" 
61          if len(args) != 1: return 
62          completion.expand_files() 
63