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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 sys
import devil_chromium
from devil.android import device_utils
from devil.android import device_errors
from devil.utils import cmd_helper
def main():
parser = argparse.ArgumentParser(description=__doc__)
parser.usage = '''%(prog)s --device-path PATH [--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='device',
help='Target device for apk to install on.')
parser.add_argument('--device-path', required=True,
help='Remote path to flags file.')
parser.add_argument('-e', '--executable', dest='executable', default='chrome',
help='Name of the executable.')
args, remote_args = parser.parse_known_args()
devil_chromium.Initialize()
as_root = not args.device_path.startswith('/data/local/tmp/')
if args.device:
devices = [device_utils.DeviceUtils(args.device, default_retries=0)]
else:
devices = device_utils.DeviceUtils.HealthyDevices(default_retries=0)
if not devices:
raise device_errors.NoDevicesError()
all_devices = device_utils.DeviceUtils.parallel(devices)
def print_args():
def read_flags(device):
try:
return device.ReadFile(args.device_path, as_root=as_root).rstrip()
except device_errors.AdbCommandFailedError:
return '' # File might not exist.
descriptions = all_devices.pMap(lambda d: d.build_description).pGet(None)
flags = all_devices.pMap(read_flags).pGet(None)
for d, desc, flags in zip(devices, descriptions, flags):
print ' %s (%s): %r' % (d, desc, flags)
# No args == print flags.
if not remote_args:
print 'Existing flags (in %s):' % args.device_path
print_args()
return 0
# Empty string arg == delete flags file.
if len(remote_args) == 1 and not remote_args[0]:
def delete_flags(device):
device.RunShellCommand(['rm', '-f', args.device_path], as_root=as_root)
all_devices.pMap(delete_flags).pGet(None)
print 'Deleted %s' % args.device_path
return 0
# Set flags.
quoted_args = ' '.join(cmd_helper.SingleQuote(x) for x in remote_args)
flags_str = ' '.join([args.executable, quoted_args])
def write_flags(device):
device.WriteFile(args.device_path, flags_str, as_root=as_root)
device.RunShellCommand(['chmod', '0664', args.device_path], as_root=as_root)
all_devices.pMap(write_flags).pGet(None)
print 'Wrote flags to %s' % args.device_path
print_args()
return 0
if __name__ == '__main__':
sys.exit(main())
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