third_party/protobuf/protobuf_lite_java_descriptor_proto.py

   1 #!/usr/bin/env python
   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.
   5
   6 """Generate java DescriptorProto file.
   7
   8 Usage:
   9     protobuf_lite_java_descriptor_proto.py {protoc} {java_out} {include} {proto_files}
  10
  11 This is a helper file for the protobuf_lite_java_gen_descriptor_proto action in
  12 protobuf.gyp.
  13
  14 It performs the following steps:
  15 1. Recursively deletes old java_out directory.
  16 2. Creates java_out directory.
  17 3. Generates Java descriptor proto file using protoc.
  18 """
  19
  20 import os
  21 import shutil
  22 import subprocess
  23 import sys
  24
  25 def main(argv):
  26   if len(argv) < 4:
  27     usage()
  28     return 1
  29
  30   protoc_path, java_out, include = argv[1:4]
  31   proto_files = argv[4:]
  32
  33   # Delete all old sources
  34   if os.path.exists(java_out):
  35     shutil.rmtree(java_out)
  36
  37   # Create source directory
  38   os.makedirs(java_out)
  39
  40   # Generate Java files using protoc
  41   return subprocess.call(
  42       [protoc_path, '--java_out', java_out, '-I' + include]
  43       + proto_files)
  44
  45 def usage():
  46   print(__doc__);
  47
  48 if __name__ == '__main__':
  49   sys.exit(main(sys.argv))