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#!/usr/bin/python2
#
# Copyright (c) 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.
"""Generate or update an existing config (.options file) for libfuzzer test.
Invoked by GN from fuzzer_test.gni.
"""
import argparse
import os
import sys
CONFIG_HEADER = '''# This is an automatically generated config for libFuzzer.
[libfuzzer]
'''
def main():
parser = argparse.ArgumentParser(description="Generate fuzzer config.")
parser.add_argument('--config', required=True)
parser.add_argument('--dict')
parser.add_argument('--libfuzzer_options', nargs='+', default=[])
args = parser.parse_args()
# Script shouldn't be invoked without both arguments, but just in case.
if not args.dict and not args.libfuzzer_options:
return
config_path = args.config
# Generate .options file.
with open(config_path, 'w') as options_file:
options_file.write(CONFIG_HEADER)
# Dict will be copied into build directory, need only basename for config.
if args.dict:
options_file.write('dict = %s\n' % os.path.basename(args.dict))
for option in args.libfuzzer_options:
options_file.write(option)
options_file.write('\n')
if __name__ == '__main__':
main()
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