| #!/usr/bin/python | |
| # Consolidates duplicate key-value pairs in a JSON file. | |
| # If the same key is used with different values, no warning is given, | |
| # and there is no guarantee about which key-value pair will be output. | |
| # There is also no guarantee as to the order of the key-value pairs | |
| # output. | |
| # | |
| # Copyright 2013 Google Inc. | |
| # https://developers.google.com/blockly/ | |
| # | |
| # 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. | |
| import argparse | |
| import codecs | |
| import json | |
| from common import InputError | |
| def main(): | |
| """Parses arguments and iterates over files. | |
| Raises: | |
| IOError: An I/O error occurred with an input or output file. | |
| InputError: Input JSON could not be parsed. | |
| """ | |
| # Set up argument parser. | |
| parser = argparse.ArgumentParser( | |
| description='Removes duplicate key-value pairs from JSON files.') | |
| parser.add_argument('--suffix', default='', | |
| help='optional suffix for output files; ' | |
| 'if empty, files will be changed in place') | |
| parser.add_argument('files', nargs='+', help='input files') | |
| args = parser.parse_args() | |
| # Iterate over files. | |
| for filename in args.files: | |
| # Read in json using Python libraries. This eliminates duplicates. | |
| print('Processing ' + filename + '...') | |
| try: | |
| with codecs.open(filename, 'r', 'utf-8') as infile: | |
| j = json.load(infile) | |
| except ValueError, e: | |
| print('Error reading ' + filename) | |
| raise InputError(file, str(e)) | |
| # Built up output strings as an array to make output of delimiters easier. | |
| output = [] | |
| for key in j: | |
| if key != '@metadata': | |
| output.append('\t"' + key + '": "' + | |
| j[key].replace('\n', '\\n') + '"') | |
| # Output results. | |
| with codecs.open(filename + args.suffix, 'w', 'utf-8') as outfile: | |
| outfile.write('{\n') | |
| outfile.write(',\n'.join(output)) | |
| outfile.write('\n}\n') | |
| if __name__ == '__main__': | |
| main() | |