1# Copyright (C) 2019 The Android Open Source Project 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14"""Script to wrap protoc execution. 15 16This script exists to work-around the bad depfile generation by protoc when 17generating descriptors.""" 18 19from __future__ import print_function 20import argparse 21import os 22import sys 23import subprocess 24import tempfile 25import uuid 26 27from codecs import open 28 29 30def main(): 31 parser = argparse.ArgumentParser() 32 parser.add_argument('--descriptor_set_out', default=None) 33 parser.add_argument('--dependency_out', default=None) 34 parser.add_argument('protoc') 35 args, remaining = parser.parse_known_args() 36 37 if args.dependency_out and args.descriptor_set_out: 38 tmp_path = os.path.join(tempfile.gettempdir(), str(uuid.uuid4())) 39 custom = [ 40 '--descriptor_set_out', args.descriptor_set_out, '--dependency_out', 41 tmp_path 42 ] 43 try: 44 cmd = [args.protoc] + custom + remaining 45 subprocess.check_call(cmd) 46 with open(tmp_path, 'rb') as tmp_rd: 47 dependency_data = tmp_rd.read().decode('utf-8') 48 finally: 49 if os.path.exists(tmp_path): 50 os.unlink(tmp_path) 51 52 with open(args.dependency_out, 'w', encoding='utf-8') as f: 53 f.write(args.descriptor_set_out + ":") 54 f.write(dependency_data) 55 else: 56 subprocess.check_call(sys.argv[1:]) 57 58 59if __name__ == '__main__': 60 sys.exit(main()) 61