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#!/usr/bin/python
# Copyright 2015 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.
"""Utility for reading / writing command-line flag files on device(s)."""
import argparse
import os
import sys
import devil_chromium
from devil.android import device_utils
from devil.android import flag_changer
from devil.utils import cmd_helper
def main():
parser = argparse.ArgumentParser(description=__doc__)
parser.usage = '''%(prog)s --name FILENAME [--device SERIAL] [flags...]
No flags: Prints existing command-line file.
Empty string: Deletes command-line file.
Otherwise: Writes command-line file.
'''
parser.add_argument('-d', '--device', dest='devices', action='append',
default=[], help='Target device serial (repeatable).')
parser.add_argument('--name', required=True,
help='Name of file where to store flags on the device.')
parser.add_argument('-e', '--executable', dest='executable', default='chrome',
help='(deprecated) No longer used.')
parser.add_argument('--adb-path', type=os.path.abspath,
help='Path to the adb binary.')
args, remote_args = parser.parse_known_args()
devil_chromium.Initialize(adb_path=args.adb_path)
devices = device_utils.DeviceUtils.HealthyDevices(device_arg=args.devices,
default_retries=0)
all_devices = device_utils.DeviceUtils.parallel(devices)
if not remote_args:
# No args == do not update, just print flags.
remote_args = None
action = ''
elif len(remote_args) == 1 and not remote_args[0]:
# Single empty string arg == delete flags
remote_args = []
action = 'Deleted command line file. '
else:
action = 'Wrote command line file. '
def update_flags(device):
changer = flag_changer.FlagChanger(device, args.name)
if remote_args is not None:
flags = changer.ReplaceFlags(remote_args)
else:
flags = changer.GetCurrentFlags()
return (device, device.build_description, flags)
updated_values = all_devices.pMap(update_flags).pGet(None)
print '%sCurrent flags (in %s):' % (action, args.name)
for d, desc, flags in updated_values:
if flags:
# Shell-quote flags for easy copy/paste as new args on the terminal.
quoted_flags = ' '.join(cmd_helper.SingleQuote(f) for f in sorted(flags))
else:
quoted_flags = '( empty )'
print ' %s (%s): %s' % (d, desc, quoted_flags)
return 0
if __name__ == '__main__':
sys.exit(main())
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