blob: 1eeeb6ab025ee9a38db36d496a302d0f80915862 [file] [log] [blame]
#!/usr/bin/env python
# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
Checks out a downstream branch from the currently checked out branch. If there
is more than one downstream branch, then this script will prompt you to select
which branch.
from __future__ import print_function
import argparse
import sys
import gclient_utils
from git_common import current_branch, branches, upstream, run, hash_one
import metrics
@metrics.collector.collect_metrics('git nav-downstream')
def main(args):
parser = argparse.ArgumentParser()
'The number to pick if this command would '
opts = parser.parse_args(args)
upfn = upstream
cur = current_branch()
if cur == 'HEAD':
def _upfn(b):
parent = upstream(b)
if parent:
return hash_one(parent)
upfn = _upfn
cur = hash_one(cur)
downstreams = [b for b in branches() if upfn(b) == cur]
if not downstreams:
print("No downstream branches")
return 1
elif len(downstreams) == 1:
run('checkout', downstreams[0], stdout=sys.stdout, stderr=sys.stderr)
high = len(downstreams) - 1
while True:
print("Please select a downstream branch")
for i, b in enumerate(downstreams):
print(" %d. %s" % (i, b))
prompt = "Selection (0-%d)[0]: " % high
r = opts.pick
if r:
print(prompt + r)
r = gclient_utils.AskForData(prompt).strip() or '0'
if not r.isdigit() or (0 > int(r) > high):
print("Invalid choice.")
run('checkout', downstreams[int(r)], stdout=sys.stdout,
return 0
if __name__ == '__main__':
with metrics.collector.print_notice_and_exit():