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.
6 """Generate java source files from protobuf files.
8 This is a helper file for the genproto_java action in protoc_java.gypi.
10 It performs the following steps:
11 1. Deletes all old sources (ensures deleted classes are not part of new jars).
12 2. Creates source directory.
13 3. Generates Java files using protoc (output into either --java-out-dir or
15 4. Creates a new stamp file.
24 sys.path.append(os.path.join(os.path.dirname(__file__), "android", "gyp"))
25 from util import build_utils
28 parser = optparse.OptionParser()
29 build_utils.AddDepfileOption(parser)
30 parser.add_option("--protoc", help="Path to protoc binary.")
31 parser.add_option("--proto-path", help="Path to proto directory.")
32 parser.add_option("--java-out-dir",
33 help="Path to output directory for java files.")
34 parser.add_option("--srcjar", help="Path to output srcjar.")
35 parser.add_option("--stamp", help="File to touch on success.")
36 parser.add_option("--nano",
37 help="Use to generate nano protos.", action='store_true')
38 options, args = parser.parse_args(argv)
40 build_utils.CheckOptions(options, parser, ['protoc', 'proto_path'])
41 if not options.java_out_dir and not options.srcjar:
42 print 'One of --java-out-dir or --srcjar must be specified.'
45 with build_utils.TempDir() as temp_dir:
47 # Specify arguments to the generator.
48 generator_args = ['optional_field_style=reftypes',
49 'store_unknown_fields=true']
50 out_arg = '--javanano_out=' + ','.join(generator_args) + ':' + temp_dir
52 out_arg = '--java_out=' + temp_dir
54 # Check if all proto files (which are listed in the args) are opting to
55 # use the lite runtime, otherwise we'd have to include the much heavier
56 # regular proto runtime in Chrome.
57 # TODO(jkrcal): Replace this check by '--java_lite_out=' for the out_arg
58 # above once this works on the master branch of the protobuf library,
59 # expected in version 4.0 (see https://crbug.com/800281).
60 for proto_file in args:
61 if not 'LITE_RUNTIME' in open(proto_file).read():
63 'Chrome only supports lite protos. Please add "optimize_for = '
64 'LITE_RUNTIME" to your proto file to enable the lite runtime.')
65 # Generate Java files using protoc.
66 build_utils.CheckOutput(
67 [options.protoc, '--proto_path', options.proto_path, out_arg]
70 if options.java_out_dir:
71 build_utils.DeleteDirectory(options.java_out_dir)
72 shutil.copytree(temp_dir, options.java_out_dir)
74 build_utils.ZipDir(options.srcjar, temp_dir)
78 deps = args + [options.protoc]
79 build_utils.WriteDepfile(options.depfile, options.srcjar, deps,
83 build_utils.Touch(options.stamp)
85 if __name__ == '__main__':
86 sys.exit(main(sys.argv[1:]))