Merge "conv_linker_config handling existing output file"

import collections

import json

import os

import sys

import linker_config_pb2 #pylint: disable=import-error

from google.protobuf.descriptor import FieldDescriptor

def Proto(args):

    """

    Merges input json files (--source) into a protobuf message (--output).

    Fails if the output file exists. Set --force or --append to deal with the existing

    output file.

    --force to overwrite the output file with the input (.json files).

    --append to append the input to the output file.

    """

    pb = linker_config_pb2.LinkerConfig()

    if os.path.isfile(args.output):

        if args.force:

            pass

        elif args.append:

            with open(args.output, 'rb') as f:

                pb.ParseFromString(f.read())

        else:

            sys.stderr.write(f'Error: {args.output} exists. Use --force or --append.\n')

            sys.exit(1)

    if args.source:

        for input in args.source.split(':'):

            json_content = ''

        required=True,

        type=str,

        help='Target path to create protobuf file.')

    option_for_existing_output = parser_proto.add_mutually_exclusive_group()

    option_for_existing_output.add_argument(

        '-f',

        '--force',

        action='store_true',

        help='Overwrite if the output file exists.')

    option_for_existing_output.add_argument(

        '-a',

        '--append',

        action='store_true',

        help='Append the input to the output file if the output file exists.')

    parser_proto.set_defaults(func=Proto)

    print_proto = subparsers.add_parser(

def main():

    args = GetArgParser().parse_args()

    parser = GetArgParser()

    args = parser.parse_args()

    if 'func' in args:

        args.func(args)

    else:

        parser.print_help()

if __name__ == '__main__':