chiark - git - mdw - stgit/blob - stgit/commands/common.py

   1 """Function/variables commmon to all the commands
   2 """
   3
   4 __copyright__ = """
   5 Copyright (C) 2005, Catalin Marinas <catalin.marinas@gmail.com>
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License version 2 as
   9 published by the Free Software Foundation.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19 """
  20
  21 import sys, os
  22 from optparse import OptionParser, make_option
  23
  24 from stgit.utils import *
  25 from stgit import stack, git
  26
  27
  28 # Command exception class
  29 class CmdException(Exception):
  30     pass
  31
  32
  33 # Global variables
  34 try:
  35     crt_series = stack.Series()
  36 except (IOError, stack.StackException, git.GitException), err:
  37     print >> sys.stderr, err
  38     sys.exit(2)
  39
  40
  41 # Utility functions
  42 def git_id(string):
  43     """Return the GIT id
  44     """
  45     if not string:
  46         return None
  47
  48     string_list = string.split('/')
  49
  50     if len(string_list) == 1:
  51         patch_name = None
  52         git_id = string_list[0]
  53
  54         if git_id == 'HEAD':
  55             return git.get_head()
  56         if git_id == 'base':
  57             return read_string(crt_series.get_base_file())
  58
  59         for path in [os.path.join(git.base_dir, 'refs', 'heads'),
  60                      os.path.join(git.base_dir, 'refs', 'tags')]:
  61             id_file = os.path.join(path, git_id)
  62             if os.path.isfile(id_file):
  63                 return read_string(id_file)
  64     elif len(string_list) == 2:
  65         patch_name = string_list[0]
  66         if patch_name == '':
  67             patch_name = crt_series.get_current()
  68         git_id = string_list[1]
  69
  70         if not patch_name:
  71             raise CmdException, 'No patches applied'
  72         elif not (patch_name in crt_series.get_applied()
  73                 + crt_series.get_unapplied()):
  74             raise CmdException, 'Unknown patch "%s"' % patch_name
  75
  76         if git_id == 'bottom':
  77             return crt_series.get_patch(patch_name).get_bottom()
  78         if git_id == 'top':
  79             return crt_series.get_patch(patch_name).get_top()
  80
  81     raise CmdException, 'Unknown id: %s' % string
  82
  83 def check_local_changes():
  84     if git.local_changes():
  85         raise CmdException, \
  86               'local changes in the tree. Use "refresh" to commit them'
  87
  88 def check_head_top_equal():
  89     if not crt_series.head_top_equal():
  90         raise CmdException, \
  91               'HEAD and top are not the same. You probably committed\n' \
  92               '  changes to the tree ouside of StGIT. If you know what you\n' \
  93               '  are doing, use the "refresh -f" command'
  94
  95 def check_conflicts():
  96     if os.path.exists(os.path.join(git.base_dir, 'conflicts')):
  97         raise CmdException, 'Unsolved conflicts. Please resolve them first'
  98
  99 def print_crt_patch():
 100     patch = crt_series.get_current()
 101     if patch:
 102         print 'Now at patch "%s"' % patch
 103     else:
 104         print 'No patches applied'
 105
 106 def resolved(filename):
 107     git.update_cache([filename])
 108     for ext in ['.local', '.older', '.remote']:
 109         fn = filename + ext
 110         if os.path.isfile(fn):
 111             os.remove(fn)
 112
 113 def resolved_all():
 114     conflicts = git.get_conflicts()
 115     if conflicts:
 116         for filename in conflicts:
 117             resolved(filename)
 118         os.remove(os.path.join(git.base_dir, 'conflicts'))