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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright 2020 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Git helper functions."""
from __future__ import print_function
import collections
import os
import re
import subprocess
import tempfile
CommitContents = collections.namedtuple('CommitContents', ['url', 'cl_number'])
def InChroot():
"""Returns True if currently in the chroot."""
return 'CROS_WORKON_SRCROOT' in os.environ
def VerifyOutsideChroot():
"""Checks whether the script invoked was executed in the chroot.
Raises:
AssertionError: The script was run inside the chroot.
"""
assert not InChroot(), 'Script should be run outside the chroot.'
def CreateBranch(repo, branch):
"""Creates a branch in the given repo.
Args:
repo: The absolute path to the repo.
branch: The name of the branch to create.
Raises:
ValueError: Failed to create a repo in that directory.
"""
if not os.path.isdir(repo):
raise ValueError('Invalid directory path provided: %s' % repo)
subprocess.check_output(['git', '-C', repo, 'reset', 'HEAD', '--hard'])
subprocess.check_output(['repo', 'start', branch], cwd=repo)
def DeleteBranch(repo, branch):
"""Deletes a branch in the given repo.
Args:
repo: The absolute path of the repo.
branch: The name of the branch to delete.
Raises:
ValueError: Failed to delete the repo in that directory.
"""
if not os.path.isdir(repo):
raise ValueError('Invalid directory path provided: %s' % repo)
subprocess.check_output(['git', '-C', repo, 'checkout', 'cros/master'])
subprocess.check_output(['git', '-C', repo, 'reset', 'HEAD', '--hard'])
subprocess.check_output(['git', '-C', repo, 'branch', '-D', branch])
def UploadChanges(repo, branch, commit_messages):
"""Uploads the changes in the specifed branch of the given repo for review.
Args:
repo: The absolute path to the repo where changes were made.
branch: The name of the branch to upload.
commit_messages: A string of commit message(s) (i.e. '[message]'
of the changes made.
Returns:
A nametuple that has two (key, value) pairs, where the first pair is the
Gerrit commit URL and the second pair is the change list number.
Raises:
ValueError: Failed to create a commit or failed to upload the
changes for review.
"""
if not os.path.isdir(repo):
raise ValueError('Invalid path provided: %s' % repo)
# Create a git commit.
with tempfile.NamedTemporaryFile(mode='w+t') as f:
f.write('\n'.join(commit_messages))
f.flush()
subprocess.check_output(['git', 'commit', '-F', f.name], cwd=repo)
# Upload the changes for review.
out = subprocess.check_output(
['repo', 'upload', '--yes', '--ne', '--no-verify',
'--br=%s' % branch],
stderr=subprocess.STDOUT,
cwd=repo,
encoding='utf-8')
print(out)
found_url = re.search(
r'https://chromium-review.googlesource.com/c/'
r'chromiumos/overlays/chromiumos-overlay/\+/([0-9]+)', out.rstrip())
if not found_url:
raise ValueError('Failed to find change list URL.')
return CommitContents(
url=found_url.group(0), cl_number=int(found_url.group(1)))
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