mdw@git.distorted.org.uk Git - stgit/blob - stgit/commands/redo.py

   1 # -*- coding: utf-8 -*-
   2
   3 __copyright__ = """
   4 Copyright (C) 2008, Karl Hasselström <kha@treskal.com>
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License version 2 as
   8 published by the Free Software Foundation.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  18 """
  19
  20 from stgit.argparse import opt
  21 from stgit.commands import common
  22 from stgit.lib import log, transaction
  23
  24 help = 'Undo the last undo operation'
  25 kind = 'stack'
  26 usage = ['']
  27 description = """
  28 If the last command was an undo, reset the patch stack to the state it
  29 had before the undo. Consecutive invocations of "stg redo" will undo
  30 the effects of consecutive invocations of "stg undo".
  31
  32 It is an error to run "stg redo" if the last command was not an
  33 undo."""
  34
  35 args = []
  36 options = [
  37     opt('-n', '--number', type = 'int', metavar = 'N', default = 1,
  38         short = 'Undo the last N undos'),
  39     opt('--hard', action = 'store_true',
  40         short = 'Discard changes in your index/worktree')]
  41
  42 directory = common.DirectoryHasRepositoryLib()
  43
  44 def func(parser, options, args):
  45     stack = directory.repository.current_stack
  46     if options.number < 1:
  47         raise common.CmdException('Bad number of undos to redo')
  48     state = log.undo_state(stack, -options.number)
  49     trans = transaction.StackTransaction(stack, 'redo %d' % options.number,
  50                                          discard_changes = options.hard,
  51                                          allow_bad_head = True)
  52     try:
  53         log.reset_stack(trans, stack.repository.default_iw, state)
  54     except transaction.TransactionHalted:
  55         pass
  56     return trans.run(stack.repository.default_iw, allow_bad_head = True)