1#!/usr/bin/env python 2# 3# Copyright 2024 The Android Open Source Project 4# 5# Licensed under the Apache License, Version 2.0 (the "License"); 6# you may not use this file except in compliance with the License. 7# You may obtain a copy of the License at 8# 9# http://www.apache.org/licenses/LICENSE-2.0 10# 11# Unless required by applicable law or agreed to in writing, software 12# distributed under the License is distributed on an "AS IS" BASIS, 13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14# See the License for the specific language governing permissions and 15# limitations under the License. 16# 17"""A tool for merging two or more JSON files.""" 18 19import argparse 20import logging 21import json 22import sys 23 24def parse_args(): 25 """Parse commandline arguments.""" 26 27 parser = argparse.ArgumentParser() 28 parser.add_argument("output", help="output JSON file", type=argparse.FileType("w")) 29 parser.add_argument("input", help="input JSON files", nargs="+", type=argparse.FileType("r")) 30 return parser.parse_args() 31 32def main(): 33 """Program entry point.""" 34 args = parse_args() 35 merged_dict = {} 36 has_error = False 37 logger = logging.getLogger(__name__) 38 39 for json_file in args.input: 40 try: 41 data = json.load(json_file) 42 except json.JSONDecodeError as e: 43 logger.error(f"Error parsing JSON in file: {json_file.name}. Reason: {e}") 44 has_error = True 45 continue 46 47 for key, value in data.items(): 48 if key not in merged_dict: 49 merged_dict[key] = value 50 elif merged_dict[key] == value: 51 logger.warning(f"Duplicate key '{key}' with identical values found.") 52 else: 53 logger.error(f"Conflicting values for key '{key}': {merged_dict[key]} != {value}") 54 has_error = True 55 56 if has_error: 57 sys.exit(1) 58 59 json.dump(merged_dict, args.output) 60 61if __name__ == "__main__": 62 main() 63