import sys, os
from stgit import basedir
-from stgit.config import file_extensions, ConfigOption
+from stgit.config import config, file_extensions, ConfigOption
from stgit.utils import append_string
-
+from stgit.out import *
+from stgit.run import *
class GitMergeException(Exception):
pass
else:
return x
-def __output(cmd):
- f = os.popen(cmd, 'r')
- string = f.readline().rstrip()
- if f.close():
- raise GitMergeException, 'Error: failed to execute "%s"' % cmd
- return string
+class MRun(Run):
+ exc = GitMergeException # use a custom exception class on errors
def __checkout_files(orig_hash, file1_hash, file2_hash,
path,
if orig_hash:
orig = path + extensions['ancestor']
- tmp = __output('git-unpack-file %s' % orig_hash)
+ tmp = MRun('git-unpack-file', orig_hash).output_one_line()
os.chmod(tmp, int(orig_mode, 8))
os.renames(tmp, orig)
if file1_hash:
src1 = path + extensions['current']
- tmp = __output('git-unpack-file %s' % file1_hash)
+ tmp = MRun('git-unpack-file', file1_hash).output_one_line()
os.chmod(tmp, int(file1_mode, 8))
os.renames(tmp, src1)
if file2_hash:
src2 = path + extensions['patched']
- tmp = __output('git-unpack-file %s' % file2_hash)
+ tmp = MRun('git-unpack-file', file2_hash).output_one_line()
os.chmod(tmp, int(file2_mode, 8))
os.renames(tmp, src2)
+ if file1_hash and not os.path.exists(path):
+ # the current file might be removed by GIT when it is a new
+ # file added in both branches. Just re-generate it
+ tmp = MRun('git-unpack-file', file1_hash).output_one_line()
+ os.chmod(tmp, int(file1_mode, 8))
+ os.renames(tmp, path)
+
def __remove_files(orig_hash, file1_hash, file2_hash):
"""Remove any temporary files
"""
os.remove(src1)
if file2_hash:
os.remove(src2)
- pass
def __conflict(path):
"""Write the conflict file for the 'path' variable and exit
append_string(os.path.join(basedir.get(), 'conflicts'), path)
+def interactive_merge(filename):
+ """Run the interactive merger on the given file. Note that the
+ index should not have any conflicts.
+ """
+ extensions = file_extensions()
+
+ ancestor = filename + extensions['ancestor']
+ current = filename + extensions['current']
+ patched = filename + extensions['patched']
+
+ if os.path.isfile(ancestor):
+ three_way = True
+ files_dict = {'branch1': current,
+ 'ancestor': ancestor,
+ 'branch2': patched,
+ 'output': filename}
+ imerger = config.get('stgit.i3merge')
+ else:
+ three_way = False
+ files_dict = {'branch1': current,
+ 'branch2': patched,
+ 'output': filename}
+ imerger = config.get('stgit.i2merge')
+
+ if not imerger:
+ raise GitMergeException, 'No interactive merge command configured'
+
+ # check whether we have all the files for the merge
+ for fn in [filename, current, patched]:
+ if not os.path.isfile(fn):
+ raise GitMergeException, \
+ 'Cannot run the interactive merge: "%s" missing' % fn
+
+ mtime = os.path.getmtime(filename)
+
+ out.info('Trying the interactive %s merge'
+ % (three_way and 'three-way' or 'two-way'))
+
+ err = os.system(imerger % files_dict)
+ if err != 0:
+ raise GitMergeException, 'The interactive merge failed: %d' % err
+ if not os.path.isfile(filename):
+ raise GitMergeException, 'The "%s" file is missing' % filename
+ if mtime == os.path.getmtime(filename):
+ raise GitMergeException, 'The "%s" file was not modified' % filename
+
+
#
# Main algorithm
#
if file1_hash == file2_hash:
if os.system('git-update-index --cacheinfo %s %s %s'
% (file1_mode, file1_hash, path)) != 0:
- print >> sys.stderr, 'Error: git-update-index failed'
+ out.error('git-update-index failed')
__conflict(path)
return 1
if os.system('git-checkout-index -u -f -- %s' % path):
- print >> sys.stderr, 'Error: git-checkout-index failed'
+ out.error('git-checkout-index failed')
__conflict(path)
return 1
if file1_mode != file2_mode:
- print >> sys.stderr, \
- 'Error: File added in both, permissions conflict'
+ out.error('File added in both, permissions conflict')
__conflict(path)
return 1
# 3-way merge
else:
- merge_ok = os.system(merger % {'branch1': src1,
- 'ancestor': orig,
- 'branch2': src2,
- 'output': path }) == 0
+ merge_ok = os.system(str(merger) % {'branch1': src1,
+ 'ancestor': orig,
+ 'branch2': src2,
+ 'output': path }) == 0
if merge_ok:
os.system('git-update-index -- %s' % path)
__remove_files(orig_hash, file1_hash, file2_hash)
return 0
else:
- print >> sys.stderr, \
- 'Error: three-way merge tool failed for file "%s"' \
- % path
+ out.error('Three-way merge tool failed for file "%s"'
+ % path)
# reset the cache to the first branch
os.system('git-update-index --cacheinfo %s %s %s'
% (file1_mode, file1_hash, path))
- if keeporig != 'yes':
+
+ if config.get('stgit.autoimerge') == 'yes':
+ try:
+ interactive_merge(path)
+ except GitMergeException, ex:
+ # interactive merge failed
+ out.error(str(ex))
+ if str(keeporig) != 'yes':
+ __remove_files(orig_hash, file1_hash,
+ file2_hash)
+ __conflict(path)
+ return 1
+ # successful interactive merge
+ os.system('git-update-index -- %s' % path)
__remove_files(orig_hash, file1_hash, file2_hash)
- __conflict(path)
- return 1
+ return 0
+ else:
+ # no interactive merge, just mark it as conflict
+ if str(keeporig) != 'yes':
+ __remove_files(orig_hash, file1_hash, file2_hash)
+ __conflict(path)
+ return 1
+
# file deleted in both or deleted in one and unchanged in the other
elif not (file1_hash or file2_hash) \
or file1_hash == orig_hash or file2_hash == orig_hash:
if file1_hash == file2_hash:
if os.system('git-update-index --add --cacheinfo %s %s %s'
% (file1_mode, file1_hash, path)) != 0:
- print >> sys.stderr, 'Error: git-update-index failed'
+ out.error('git-update-index failed')
__conflict(path)
return 1
if os.system('git-checkout-index -u -f -- %s' % path):
- print >> sys.stderr, 'Error: git-checkout-index failed'
+ out.error('git-checkout-index failed')
__conflict(path)
return 1
if file1_mode != file2_mode:
- print >> sys.stderr, \
- 'Error: File "s" added in both, ' \
- 'permissions conflict' % path
+ out.error('File "s" added in both, permissions conflict'
+ % path)
__conflict(path)
return 1
- # files are different
+ # files added in both but different
else:
- # reset the index to the current file
- os.system('git-update-index -- %s' % path)
- print >> sys.stderr, \
- 'Error: File "%s" added in branches but different' % path
- __conflict(path)
- return 1
+ out.error('File "%s" added in branches but different' % path)
+ # reset the cache to the first branch
+ os.system('git-update-index --cacheinfo %s %s %s'
+ % (file1_mode, file1_hash, path))
+
+ if config.get('stgit.autoimerge') == 'yes':
+ try:
+ interactive_merge(path)
+ except GitMergeException, ex:
+ # interactive merge failed
+ out.error(str(ex))
+ if str(keeporig) != 'yes':
+ __remove_files(orig_hash, file1_hash,
+ file2_hash)
+ __conflict(path)
+ return 1
+ # successful interactive merge
+ os.system('git-update-index -- %s' % path)
+ __remove_files(orig_hash, file1_hash, file2_hash)
+ return 0
+ else:
+ # no interactive merge, just mark it as conflict
+ if str(keeporig) != 'yes':
+ __remove_files(orig_hash, file1_hash, file2_hash)
+ __conflict(path)
+ return 1
# file added in one
elif file1_hash or file2_hash:
if file1_hash:
obj = file2_hash
if os.system('git-update-index --add --cacheinfo %s %s %s'
% (mode, obj, path)) != 0:
- print >> sys.stderr, 'Error: git-update-index failed'
+ out.error('git-update-index failed')
__conflict(path)
return 1
__remove_files(orig_hash, file1_hash, file2_hash)
return os.system('git-checkout-index -u -f -- %s' % path)
# Unhandled case
- print >> sys.stderr, 'Error: Unhandled merge conflict: ' \
- '"%s" "%s" "%s" "%s" "%s" "%s" "%s"' \
- % (orig_hash, file1_hash, file2_hash,
- path,
- orig_mode, file1_mode, file2_mode)
+ out.error('Unhandled merge conflict: "%s" "%s" "%s" "%s" "%s" "%s" "%s"'
+ % (orig_hash, file1_hash, file2_hash,
+ path,
+ orig_mode, file1_mode, file2_mode))
__conflict(path)
return 1
~mdw / stgit / blobdiff