def merge_message_path():
"""Return the path to .git/MERGE_MSG or .git/SQUASH_MSG."""
for basename in ('MERGE_MSG', 'SQUASH_MSG'):
path = git.git_path(basename)
if os.path.exists(path):
return path
return None
def abort_merge():
"""Abort a merge by reading the tree at HEAD."""
# Reset the worktree
git.read_tree('HEAD', reset=True, u=True, v=True)
# remove MERGE_HEAD
merge_head = git.git_path('MERGE_HEAD')
if os.path.exists(merge_head):
os.unlink(merge_head)
# remove MERGE_MESSAGE, etc.
merge_msg_path = merge_message_path()
while merge_msg_path:
os.unlink(merge_msg_path)
merge_msg_path = merge_message_path()
def _read_git_head(head, default='master', git=git):
"""Pure-python .git/HEAD reader"""
# Legacy .git/HEAD symlinks
if os.path.islink(head):
refs_heads = os.path.realpath(git.git_path('refs', 'heads'))
path = os.path.abspath(head).replace('\\', '/')
if path.startswith(refs_heads + '/'):
return path[len(refs_heads)+1:]
# Common .git/HEAD "ref: refs/heads/master" file
elif os.path.isfile(head):
data = utils.slurp(core.decode(head)).rstrip()
ref_prefix = 'ref: '
if data.startswith(ref_prefix):
return data[len(ref_prefix):]
# Detached head
return data
return default
def current_branch():
"""Return the current branch"""
decode = core.decode
head = git.git_path('HEAD')
try:
key = os.stat(head).st_mtime
if _current_branch.key == key:
return _current_branch.value
except OSError:
pass
status, data = git.rev_parse('HEAD', symbolic_full_name=True, with_status=True)
if status != 0:
# git init -- read .git/HEAD. We could do this unconditionally...
data = _read_git_head(head)
for refs_prefix in ('refs/heads/', 'refs/remotes/', 'refs/tags/'):
if data.startswith(refs_prefix):
value = decode(data[len(refs_prefix):])
_current_branch.key = key
_current_branch.value = value
return value
# Detached head
return data
def merge_message(revision):
"""Return a merge message for FETCH_HEAD."""
fetch_head = git.git_path('FETCH_HEAD')
if os.path.exists(fetch_head):
return git.fmt_merge_msg('--file', fetch_head)
return "Merge branch '%s'" % revision