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# Copyright (C) 2008 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import re
import sys
from command import Command
from error import GitError, NoSuchProjectError
CHANGE_RE = re.compile(r'^([1-9][0-9]*)(?:[/\.-]([1-9][0-9]*))?$')
class Download(Command):
COMMON = True
helpSummary = "Download and checkout a change"
helpUsage = """
%prog {[project] change[/patchset]}...
"""
helpDescription = """
The '%prog' command downloads a change from the review system and
makes it available in your project's local working directory.
If no project is specified try to use current directory as a project.
"""
def _Options(self, p):
p.add_option('-b', '--branch',
help='create a new branch first')
p.add_option('-c', '--cherry-pick',
dest='cherrypick', action='store_true',
help="cherry-pick instead of checkout")
p.add_option('-x', '--record-origin', action='store_true',
help='pass -x when cherry-picking')
p.add_option('-r', '--revert',
dest='revert', action='store_true',
help="revert instead of checkout")
p.add_option('-f', '--ff-only',
dest='ffonly', action='store_true',
help="force fast-forward merge")
def _ParseChangeIds(self, opt, args):
if not args:
self.Usage()
to_get = []
project = None
for a in args:
m = CHANGE_RE.match(a)
if m:
if not project:
project = self.GetProjects(".")[0]
print('Defaulting to cwd project', project.name)
chg_id = int(m.group(1))
if m.group(2):
ps_id = int(m.group(2))
else:
ps_id = 1
refs = 'refs/changes/%2.2d/%d/' % (chg_id % 100, chg_id)
output = project._LsRemote(refs + '*')
if output:
regex = refs + r'(\d+)'
rcomp = re.compile(regex, re.I)
for line in output.splitlines():
match = rcomp.search(line)
if match:
ps_id = max(int(match.group(1)), ps_id)
to_get.append((project, chg_id, ps_id))
else:
projects = self.GetProjects([a], all_manifests=not opt.this_manifest_only)
if len(projects) > 1:
# If the cwd is one of the projects, assume they want that.
try:
project = self.GetProjects('.')[0]
except NoSuchProjectError:
project = None
if project not in projects:
print('error: %s matches too many projects; please re-run inside '
'the project checkout.' % (a,), file=sys.stderr)
for project in projects:
print(' %s/ @ %s' % (project.RelPath(local=opt.this_manifest_only),
project.revisionExpr), file=sys.stderr)
sys.exit(1)
else:
project = projects[0]
print('Defaulting to cwd project', project.name)
return to_get
def ValidateOptions(self, opt, args):
if opt.record_origin:
if not opt.cherrypick:
self.OptionParser.error('-x only makes sense with --cherry-pick')
if opt.ffonly:
self.OptionParser.error('-x and --ff are mutually exclusive options')
def Execute(self, opt, args):
for project, change_id, ps_id in self._ParseChangeIds(opt, args):
dl = project.DownloadPatchSet(change_id, ps_id)
if not dl:
print('[%s] change %d/%d not found'
% (project.name, change_id, ps_id),
file=sys.stderr)
sys.exit(1)
if not opt.revert and not dl.commits:
print('[%s] change %d/%d has already been merged'
% (project.name, change_id, ps_id),
file=sys.stderr)
continue
if len(dl.commits) > 1:
print('[%s] %d/%d depends on %d unmerged changes:'
% (project.name, change_id, ps_id, len(dl.commits)),
file=sys.stderr)
for c in dl.commits:
print(' %s' % (c), file=sys.stderr)
if opt.cherrypick:
mode = 'cherry-pick'
elif opt.revert:
mode = 'revert'
elif opt.ffonly:
mode = 'fast-forward merge'
else:
mode = 'checkout'
# We'll combine the branch+checkout operation, but all the rest need a
# dedicated branch start.
if opt.branch and mode != 'checkout':
project.StartBranch(opt.branch)
try:
if opt.cherrypick:
project._CherryPick(dl.commit, ffonly=opt.ffonly,
record_origin=opt.record_origin)
elif opt.revert:
project._Revert(dl.commit)
elif opt.ffonly:
project._FastForward(dl.commit, ffonly=True)
else:
if opt.branch:
project.StartBranch(opt.branch, revision=dl.commit)
else:
project._Checkout(dl.commit)
except GitError:
print('[%s] Could not complete the %s of %s'
% (project.name, mode, dl.commit), file=sys.stderr)
sys.exit(1)
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