ca6fe3453a
The proto is used at build time to define classpath fragments to be read and parsed at runtime by `derive_classpath` service; in order to define and set BOOTCLASSPATH, DEX2OATCLASSPATH, and SYSTEMSERVERCLASSPATH environ variables. The tool is used for debugging and generation of binary protos. Bug: 180105615 Test: m && launch_cvd with a follow up changes Change-Id: I7e8b084e5f63e9aaad11da3221b909818e69e235
76 lines
2.7 KiB
Python
76 lines
2.7 KiB
Python
# Copyright (C) 2021 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import argparse
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import classpaths_pb2
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import google.protobuf.json_format as json_format
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import google.protobuf.text_format as text_format
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def encode(args):
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pb = classpaths_pb2.ExportedClasspathsJars()
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if args.format == 'json':
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json_format.Parse(args.input.read(), pb)
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else:
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text_format.Parse(args.input.read(), pb)
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args.output.write(pb.SerializeToString())
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args.input.close()
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args.output.close()
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def decode(args):
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pb = classpaths_pb2.ExportedClasspathsJars()
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pb.ParseFromString(args.input.read())
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if args.format == 'json':
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args.output.write(json_format.MessageToJson(pb))
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else:
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args.output.write(text_format.MessageToString(pb).encode('utf_8'))
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args.input.close()
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args.output.close()
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def main():
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parser = argparse.ArgumentParser('Convert classpaths.proto messages between binary and '
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'human-readable formats.')
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parser.add_argument('-f', '--format', default='textproto',
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help='human-readable format, either json or text(proto), '
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'defaults to textproto')
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parser.add_argument('-i', '--input',
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nargs='?', type=argparse.FileType('rb'), default=sys.stdin.buffer)
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parser.add_argument('-o', '--output',
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nargs='?', type=argparse.FileType('wb'),
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default=sys.stdout.buffer)
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subparsers = parser.add_subparsers()
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parser_encode = subparsers.add_parser('encode',
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help='convert classpaths protobuf message from '
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'JSON to binary format',
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parents=[parser], add_help=False)
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parser_encode.set_defaults(func=encode)
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parser_decode = subparsers.add_parser('decode',
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help='print classpaths config in JSON format',
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parents=[parser], add_help=False)
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parser_decode.set_defaults(func=decode)
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args = parser.parse_args()
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args.func(args)
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if __name__ == '__main__':
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main()
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