zeroinstall/injector/requirements.py

   1 """
   2 Holds information about what the user asked for (which program, version constraints, etc).
   3 """
   4
   5 # Copyright (C) 2011, Thomas Leonard
   6 # See the README file for details, or visit http://0install.net.
   7
   8 from zeroinstall import _
   9
  10 class Requirements(object):
  11         """
  12         Holds information about what the user asked for (which program, version constraints, etc).
  13         """
  14         __slots__ = [
  15                 'interface_uri',
  16                 'command',
  17                 'source',
  18                 'before', 'not_before',
  19                 'os', 'cpu',
  20                 'message',
  21         ]
  22
  23         def __init__(self, interface_uri):
  24                 self.interface_uri = interface_uri
  25                 self.command = 'run'
  26                 self.source = False
  27                 self.before = self.not_before = None
  28                 self.os = self.cpu = None
  29                 self.message = None
  30
  31         def get_as_options(self):
  32                 gui_args = []
  33                 if self.not_before:
  34                         gui_args.insert(0, self.not_before)
  35                         gui_args.insert(0, '--not-before')
  36                 if self.before:
  37                         gui_args.insert(0, self.before)
  38                         gui_args.insert(0, '--before')
  39                 if self.source:
  40                         gui_args.insert(0, '--source')
  41                 if self.message:
  42                         gui_args.insert(0, self.message)
  43                         gui_args.insert(0, '--message')
  44                 if self.cpu:
  45                         gui_args.insert(0, self.cpu)
  46                         gui_args.insert(0, '--cpu')
  47                 if self.os:
  48                         gui_args.insert(0, self.os)
  49                         gui_args.insert(0, '--os')
  50                 if self.command is not None:
  51                         gui_args.append('--command')
  52                         gui_args.append(self.command)
  53
  54                 return gui_args