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# Copyright 2017 The PDFium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Classes for dealing with git."""
import subprocess
class GitHelper(object):
"""Issues git commands. Stateful."""
def __init__(self):
self.stashed = 0
def Checkout(self, branch):
"""Checks out a branch."""
subprocess.check_output(['git', 'checkout', branch])
def FetchOriginMaster(self):
"""Fetches new changes on origin/master."""
subprocess.check_output(['git', 'fetch', 'origin', 'master'])
def StashPush(self):
"""Stashes uncommitted changes."""
output = subprocess.check_output(['git', 'stash', '--include-untracked'])
if 'No local changes to save' in output:
return False
self.stashed += 1
return True
def StashPopAll(self):
"""Pops as many changes as this instance stashed."""
while self.stashed > 0:
subprocess.check_output(['git', 'stash', 'pop'])
self.stashed -= 1
def GetCurrentBranchName(self):
"""Returns a string with the current branch name."""
return subprocess.check_output(
['git', 'rev-parse', '--abbrev-ref', 'HEAD']).strip()
def GetCurrentBranchHash(self):
return subprocess.check_output(
['git', 'rev-parse', 'HEAD']).strip()
def IsCurrentBranchClean(self):
output = subprocess.check_output(['git', 'status', '--porcelain'])
return not output
def BranchExists(self, branch_name):
"""Return whether a branch with the given name exists."""
try:
subprocess.check_output(['git', 'rev-parse', '--verify',
branch_name])
return True
except subprocess.CalledProcessError:
return False
def CloneLocal(self, source_repo, new_repo):
subprocess.check_call(['git', 'clone', source_repo, new_repo])
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