1#!/usr/bin/env python
2# Copyright (C) 2018 The Android Open Source Project
3#
4# Licensed under the Apache License, Version 2.0 (the "License");
5# you may not use this file except in compliance with the License.
6# You may obtain a copy of the License at
7#
8#      http://www.apache.org/licenses/LICENSE-2.0
9#
10# Unless required by applicable law or agreed to in writing, software
11# distributed under the License is distributed on an "AS IS" BASIS,
12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13# See the License for the specific language governing permissions and
14# limitations under the License.
15
16import argparse
17import os
18import subprocess
19import sys
20
21
22def run(encode_or_decode, protoc_path, proto, root, input, output):
23  cmd = [
24      protoc_path,
25      '--{}=perfetto.protos.{}'.format(encode_or_decode, proto),
26      os.path.join(root, 'protos/perfetto/config/trace_config.proto'),
27      os.path.join(root, 'protos/perfetto/trace/trace.proto'),
28      '--proto_path={}/protos'.format(root),
29  ]
30  subprocess.check_call(cmd, stdin=input, stdout=output, stderr=sys.stderr)
31
32
33def main():
34  parser = argparse.ArgumentParser()
35  parser.add_argument(
36      'encode_or_decode',
37      choices=['encode', 'decode'],
38      help='encode into binary format or decode to text.'
39  )
40  parser.add_argument('--proto_name', default='TraceConfig',
41      help='name of proto to encode/decode (default: TraceConfig).')
42  parser.add_argument('--protoc_path', default=None,
43      help='path to protoc')
44  parser.add_argument('--root', default='.',
45      help='root directory (default: "protos")')
46  parser.add_argument('--input', default='-',
47      help='input file, or "-" for stdin (default: "-")')
48  parser.add_argument('--output', default='-',
49      help='output file, or "-" for stdout (default: "-")')
50  args = parser.parse_args()
51
52  encode_or_decode = args.encode_or_decode
53  proto_name = args.proto_name
54  protoc_path =  args.protoc_path
55  root =  args.root
56  input = sys.stdin if args.input == '-' else open(args.input, 'rb')
57  output = sys.stdout if args.output == '-' else open(args.output, 'wb')
58  if not protoc_path:
59    directory = os.path.dirname(__file__)
60    protoc_path = os.path.join(directory, 'gcc_like_host', 'protoc')
61  run(encode_or_decode, protoc_path, proto_name, root, input, output)
62  return 0
63
64
65if __name__ == '__main__':
66  sys.exit(main())
67