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#!/usr/bin/env python
#
# Copyright 2024 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
"""A tool for merging two or more JSON files."""
import argparse
import logging
import json
import sys
def parse_args():
"""Parse commandline arguments."""
parser = argparse.ArgumentParser()
parser.add_argument("output", help="output JSON file", type=argparse.FileType("w"))
parser.add_argument("input", help="input JSON files", nargs="+", type=argparse.FileType("r"))
return parser.parse_args()
def main():
"""Program entry point."""
args = parse_args()
merged_dict = {}
has_error = False
logger = logging.getLogger(__name__)
for json_file in args.input:
try:
data = json.load(json_file)
except json.JSONDecodeError as e:
logger.error(f"Error parsing JSON in file: {json_file.name}. Reason: {e}")
has_error = True
continue
for key, value in data.items():
if key not in merged_dict:
merged_dict[key] = value
elif merged_dict[key] == value:
logger.warning(f"Duplicate key '{key}' with identical values found.")
else:
logger.error(f"Conflicting values for key '{key}': {merged_dict[key]} != {value}")
has_error = True
if has_error:
sys.exit(1)
json.dump(merged_dict, args.output)
if __name__ == "__main__":
main()
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