git-repo/subcmds/checkout.py
Mike Frysinger ae6cb08ae5 split out cli validation from execution
A common pattern in our subcommands is to verify the arguments &
options before executing things.  For some subcommands, that check
stage is quite long which makes the execution function even bigger.
Lets split that logic out of the execute phase so it's easier to
manage these.

This is most noticeable in the sync subcommand whose Execute func
is quite large, and the option checking makes up ~15% of it.

The manifest command's Execute can be simplified significantly as
the optparse configuration always sets output_file to a string.

Change-Id: I7097847ff040e831345e63de6b467ee17609990e
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/234834
Reviewed-by: David Pursehouse <dpursehouse@collab.net>
Tested-by: Mike Frysinger <vapier@google.com>
2019-08-28 03:54:11 +00:00

67 lines
1.8 KiB
Python

# -*- coding:utf-8 -*-
#
# Copyright (C) 2009 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.
from __future__ import print_function
import sys
from command import Command
from progress import Progress
class Checkout(Command):
common = True
helpSummary = "Checkout a branch for development"
helpUsage = """
%prog <branchname> [<project>...]
"""
helpDescription = """
The '%prog' command checks out an existing branch that was previously
created by 'repo start'.
The command is equivalent to:
repo forall [<project>...] -c git checkout <branchname>
"""
def ValidateOptions(self, opt, args):
if not args:
self.Usage()
def Execute(self, opt, args):
nb = args[0]
err = []
success = []
all_projects = self.GetProjects(args[1:])
pm = Progress('Checkout %s' % nb, len(all_projects))
for project in all_projects:
pm.update()
status = project.CheckoutBranch(nb)
if status is not None:
if status:
success.append(project)
else:
err.append(project)
pm.end()
if err:
for p in err:
print("error: %s/: cannot checkout %s" % (p.relpath, nb),
file=sys.stderr)
sys.exit(1)
elif not success:
print('error: no project has branch %s' % nb, file=sys.stderr)
sys.exit(1)