mirror of
https://github.com/klzgrad/naiveproxy.git
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57 lines
1.7 KiB
Python
57 lines
1.7 KiB
Python
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#!/usr/bin/env python
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# Copyright 2013 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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# This script can either source a file and dump the enironment changes done by
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# it, or just simply dump the current environment as JSON into a file.
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import json
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import optparse
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import os
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import pipes
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import subprocess
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import sys
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def main():
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parser = optparse.OptionParser()
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parser.add_option('-f', '--output-json',
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help='File to dump the environment as JSON into.')
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parser.add_option(
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'-d', '--dump-mode', action='store_true',
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help='Dump the environment to sys.stdout and exit immediately.')
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parser.disable_interspersed_args()
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options, args = parser.parse_args()
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if options.dump_mode:
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if args or options.output_json:
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parser.error('Cannot specify args or --output-json with --dump-mode.')
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json.dump(dict(os.environ), sys.stdout)
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else:
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if not options.output_json:
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parser.error('Requires --output-json option.')
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envsetup_cmd = ' '.join(map(pipes.quote, args))
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full_cmd = [
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'bash', '-c',
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'. %s > /dev/null; %s -d' % (envsetup_cmd, os.path.abspath(__file__))
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]
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try:
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output = subprocess.check_output(full_cmd)
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except Exception as e:
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sys.exit('Error running %s and dumping environment.' % envsetup_cmd)
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env_diff = {}
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new_env = json.loads(output)
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for k, val in new_env.items():
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if k == '_' or (k in os.environ and os.environ[k] == val):
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continue
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env_diff[k] = val
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with open(options.output_json, 'w') as f:
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json.dump(env_diff, f)
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if __name__ == '__main__':
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sys.exit(main())
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