write_args.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Copyright 2018 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""Python script to output the given list as a space-delimited string to a file.

path/to/write_args.py --output filename -- arg1 arg2 ...
will output the args to the file.

This script is used from common-mk/deps.gni .
TODO(oka): Remove this file and replace the invocation with write_file if
space-delimiting option is added to it.
https://bugs.chromium.org/p/gn/issues/detail?id=9
"""

from __future__ import print_function

import argparse
import sys


def main(argv):
  parser = argparse.ArgumentParser(description=__doc__)
  parser.add_argument('--output', required=True, help='the output file name')
  parser.add_argument('args', nargs='*')
  options = parser.parse_args(argv)

  with open(options.output, 'w') as f:
    f.write(' '.join(options.args) + '\n')


if __name__ == '__main__':
  sys.exit(main(sys.argv[1:]))