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 parser.add_option("--protoc-javalite-plugin-dir",
39 help="Path to protoc java lite plugin directory.")
40 options, args = parser.parse_args(argv)
42 build_utils.CheckOptions(options, parser, ['protoc', 'proto_path'])
43 if not options.java_out_dir and not options.srcjar:
44 print 'One of --java-out-dir or --srcjar must be specified.'
47 if not options.nano and not options.protoc_javalite_plugin_dir:
48 print 'One of --nano or --protoc-javalite-plugin-dir must be specified.'
51 with build_utils.TempDir() as temp_dir:
53 # Specify arguments to the generator.
54 generator_args = ['optional_field_style=reftypes',
55 'store_unknown_fields=true']
56 out_arg = '--javanano_out=' + ','.join(generator_args) + ':' + temp_dir
58 out_arg = '--javalite_out=' + temp_dir
60 custom_env = os.environ.copy()
61 if options.protoc_javalite_plugin_dir:
62 # if we are generating lite protos, then the lite plugin needs to be in the path when protoc
63 # is called. See https://github.com/protocolbuffers/protobuf/blob/master/java/lite.md
64 custom_env['PATH'] = '{}:{}'.format(
65 os.path.abspath(options.protoc_javalite_plugin_dir), custom_env['PATH'])
67 # Generate Java files using protoc.
68 build_utils.CheckOutput(
69 [options.protoc, '--proto_path', options.proto_path, out_arg]
70 + args, env=custom_env)
72 if options.java_out_dir:
73 build_utils.DeleteDirectory(options.java_out_dir)
74 shutil.copytree(temp_dir, options.java_out_dir)
76 build_utils.ZipDir(options.srcjar, temp_dir)
80 deps = args + [options.protoc]
81 build_utils.WriteDepfile(options.depfile, options.srcjar, deps,
85 build_utils.Touch(options.stamp)
87 if __name__ == '__main__':
88 sys.exit(main(sys.argv[1:]))