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      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))
     50