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86 lines
3.1 KiB
Python
Executable File
86 lines
3.1 KiB
Python
Executable File
#!/usr/bin/env python
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# Copyright (c) 2012 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Generate java source files from protobuf files.
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This is a helper file for the genproto_java action in protoc_java.gypi.
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It performs the following steps:
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1. Deletes all old sources (ensures deleted classes are not part of new jars).
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2. Creates source directory.
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3. Generates Java files using protoc (output into either --java-out-dir or
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--srcjar).
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4. Creates a new stamp file.
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"""
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import os
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import optparse
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import shutil
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import subprocess
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import sys
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sys.path.append(os.path.join(os.path.dirname(__file__), "android", "gyp"))
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from util import build_utils
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def main(argv):
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parser = optparse.OptionParser()
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build_utils.AddDepfileOption(parser)
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parser.add_option("--protoc", help="Path to protoc binary.")
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parser.add_option("--proto-path", help="Path to proto directory.")
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parser.add_option("--java-out-dir",
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help="Path to output directory for java files.")
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parser.add_option("--srcjar", help="Path to output srcjar.")
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parser.add_option("--stamp", help="File to touch on success.")
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parser.add_option("--nano",
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help="Use to generate nano protos.", action='store_true')
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options, args = parser.parse_args(argv)
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build_utils.CheckOptions(options, parser, ['protoc', 'proto_path'])
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if not options.java_out_dir and not options.srcjar:
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print 'One of --java-out-dir or --srcjar must be specified.'
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return 1
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with build_utils.TempDir() as temp_dir:
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if options.nano:
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# Specify arguments to the generator.
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generator_args = ['optional_field_style=reftypes',
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'store_unknown_fields=true']
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out_arg = '--javanano_out=' + ','.join(generator_args) + ':' + temp_dir
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else:
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out_arg = '--java_out=' + temp_dir
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# Check if all proto files (which are listed in the args) are opting to
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# use the lite runtime, otherwise we'd have to include the much heavier
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# regular proto runtime in Chrome.
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# TODO(jkrcal): Replace this check by '--java_lite_out=' for the out_arg
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# above once this works on the master branch of the protobuf library,
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# expected in version 4.0 (see https://crbug.com/800281).
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for proto_file in args:
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if not 'LITE_RUNTIME' in open(proto_file).read():
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raise Exception(
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'Chrome only supports lite protos. Please add "optimize_for = '
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'LITE_RUNTIME" to your proto file to enable the lite runtime.')
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# Generate Java files using protoc.
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build_utils.CheckOutput(
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[options.protoc, '--proto_path', options.proto_path, out_arg]
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+ args)
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if options.java_out_dir:
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build_utils.DeleteDirectory(options.java_out_dir)
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shutil.copytree(temp_dir, options.java_out_dir)
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else:
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build_utils.ZipDir(options.srcjar, temp_dir)
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if options.depfile:
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assert options.srcjar
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deps = args + [options.protoc]
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build_utils.WriteDepfile(options.depfile, options.srcjar, deps)
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if options.stamp:
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build_utils.Touch(options.stamp)
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if __name__ == '__main__':
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sys.exit(main(sys.argv[1:]))
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