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Implement 'git symbolic-ref HEAD' in Python

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This is invoked once per project in `repo sync`.  Taking it out
saves about 1/114 of a second, so on a large set of projects like
Android it can save up to a full second of sync time.

Signed-off-by: Shawn O. Pearce <sop@google.com>
This commit is contained in:
Shawn O. Pearce 2009-04-17 18:43:33 -07:00
parent 66bdd46871
commit 5b23f24881
1 changed files with 11 additions and 8 deletions
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15
project.py
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@ -237,10 +237,7 @@ class Project(object):
The branch name omits the 'refs/heads/' prefix.
None is returned if the project is on a detached HEAD.
"""
try:
b = self.work_git.GetHead()
except GitError:
return None
if b.startswith(R_HEADS):
return b[len(R_HEADS):]
return None
@ -817,9 +814,8 @@ class Project(object):
kill.append(cb)
if kill:
try:
old = self.bare_git.GetHead()
except GitError:
if old is None:
old = 'refs/heads/please_never_use_this_as_a_branch_name'
try:
@ -1125,7 +1121,14 @@ class Project(object):
p.Wait()
def GetHead(self):
return self.symbolic_ref(HEAD)
if self._bare:
path = os.path.join(self._project.gitdir, HEAD)
else:
path = os.path.join(self._project.worktree, '.git', HEAD)
line = open(path, 'r').read()
if line.startswith('ref: '):
return line[5:-1]
return line[:-1]
def SetHead(self, ref, message=None):
cmdv = []