zeroinstall/__init__.py

   1 """
   2 The Python implementation of the Zero Install injector is divided into four sub-packages:
   3
   4  - L{zeroinstall.injector} contains most of the interesting stuff for managing feeds, keys and downloads and for selecting versions
   5  - L{zeroinstall.zerostore} contains low-level code for handling the implementation cache (where unpacked packages are stored)
   6  - L{zeroinstall.gtkui} contains code for making GTK user-interfaces
   7  - L{zeroinstall.support} contains helper code (not really specific to Zero Install)
   8
   9 @copyright: (C) 2010, Thomas Leonard
  10 @see: U{http://0install.net}
  11
  12 @var _: a function for translating strings using the zero-install domain (for use internally by Zero Install)
  13 """
  14
  15 version = '0.50'
  16
  17 import gettext
  18 from os.path import dirname, join
  19
  20 try:
  21         localedir = None
  22         translation = gettext.translation('zero-install', fallback = False)
  23 except:
  24         localedir = join(dirname(dirname(__file__)), 'locale')
  25         translation = gettext.translation('zero-install',
  26                                 localedir = localedir,
  27                                 fallback = True)
  28 _ = translation.ugettext
  29
  30 class SafeException(Exception):
  31         """An exception that can be reported to the user without a stack trace.
  32         The command-line interface's C{--verbose} option will display the full stack trace."""
  33
  34 class NeedDownload(SafeException):
  35         """Thrown by L{injector.autopolicy.AutoPolicy} if we tried to start a download
  36         and downloading is disabled."""
  37         def __init__(self, url):
  38                 Exception.__init__(self, _("Would download '%s'") % url)