1#!/usr/bin/env python 2# Copyright (c) 2012 The Chromium Authors. All rights reserved. 3# Use of this source code is governed by a BSD-style license that can be 4# found in the LICENSE file. 5 6"""Generate java source files from protobuf files. 7 8Usage: 9 protoc_java.py {protoc} {proto_path} {java_out} {stamp_file} {proto_files} 10 11This is a helper file for the genproto_java action in protoc_java.gypi. 12 13It performs the following steps: 141. Deletes all old sources (ensures deleted classes are not part of new jars). 152. Creates source directory. 163. Generates Java files using protoc. 174. Creates a new stamp file. 18""" 19 20import os 21import shutil 22import subprocess 23import sys 24 25def main(argv): 26 if len(argv) < 5: 27 usage() 28 return 1 29 30 protoc_path, proto_path, java_out, stamp_file = argv[1:5] 31 proto_files = argv[5:] 32 33 # Delete all old sources. 34 if os.path.exists(java_out): 35 shutil.rmtree(java_out) 36 37 # Create source directory. 38 os.makedirs(java_out) 39 40 # Specify arguments to the generator. 41 generator_args = ['optional_field_style=reftypes', 42 'store_unknown_fields=true'] 43 out_arg = '--javanano_out=' + ','.join(generator_args) + ':' + java_out 44 45 # Generate Java files using protoc. 46 ret = subprocess.call( 47 [protoc_path, '--proto_path', proto_path, out_arg] + proto_files) 48 49 if ret == 0: 50 # Create a new stamp file. 51 with file(stamp_file, 'a'): 52 os.utime(stamp_file, None) 53 54 return ret 55 56def usage(): 57 print(__doc__); 58 59if __name__ == '__main__': 60 sys.exit(main(sys.argv)) 61