| # Copyright 2015 The Bazel Authors. All rights reserved. |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| """Checks for proguard configuration rules that cannot be combined across libs. |
| |
| The only valid proguard arguments for a library are -keep, -assumenosideeffects, |
| and -dontnote and -dontwarn and -checkdiscard when they are provided with |
| arguments. |
| """ |
| |
| import re |
| import sys |
| |
| from third_party.py import gflags |
| |
| gflags.DEFINE_string('path', None, 'Path to the proguard config to validate') |
| gflags.DEFINE_string('output', None, 'Where to put the validated config') |
| |
| FLAGS = gflags.FLAGS |
| PROGUARD_COMMENTS_PATTERN = '#.*(\n|$)' |
| |
| |
| def main(): |
| with open(FLAGS.path) as config: |
| config_string = config.read() |
| invalid_configs = Validate(config_string) |
| if invalid_configs: |
| raise RuntimeError('Invalid proguard config parameters: ' |
| + str(invalid_configs)) |
| with open(FLAGS.output, 'w+') as outconfig: |
| config_string = ('# Merged from %s \n' % FLAGS.path) + config_string |
| outconfig.write(config_string) |
| |
| |
| def Validate(config): |
| """Checks the config for illegal arguments.""" |
| config = re.sub(PROGUARD_COMMENTS_PATTERN, '', config) |
| args = config.split('-') |
| invalid_configs = [] |
| for arg in args: |
| arg = arg.strip() |
| if not arg: |
| continue |
| elif arg.startswith('checkdiscard'): |
| continue |
| elif arg.startswith('keep'): |
| continue |
| elif arg.startswith('assumenosideeffects'): |
| continue |
| elif arg.split()[0] == 'dontnote': |
| if len(arg.split()) > 1: |
| continue |
| elif arg.split()[0] == 'dontwarn': |
| if len(arg.split()) > 1: |
| continue |
| invalid_configs.append('-' + arg.split()[0]) |
| |
| return invalid_configs |
| |
| if __name__ == '__main__': |
| FLAGS(sys.argv) |
| main() |