| '''Dumping command-line utility''' |
|
|
| import argparse |
| import sys |
|
|
| import ijson |
|
|
|
|
| METHODS_WITH_COLUMN_HEADERS = { |
| 'basic_parse': 'name, value', |
| 'parse': 'path, name, value', |
| 'kvitems': 'key, value', |
| 'items': 'value', |
| } |
|
|
| def to_string(o): |
| if isinstance(o, bytes): |
| return o.decode("utf-8") |
| return str(o) |
|
|
| def dump(): |
| description = ''' |
| Read JSON data from standard input, and dump |
| ijson events (using methods basic_parse or parse), |
| or content (using methods kvitems or items).''' |
| parser = argparse.ArgumentParser(description=description) |
| parser.add_argument('-m', '--method', choices=METHODS_WITH_COLUMN_HEADERS, |
| help='The method to use for dumping. Defaults to %(default)s', default='basic_parse') |
| parser.add_argument('-p', '--prefix', help='Prefix (used with -m items|kvitems)', default='') |
| parser.add_argument('-M', '--multiple-values', help='Allow multiple values', action='store_true') |
| args = parser.parse_args() |
|
|
| method = getattr(ijson, args.method) |
| method_args = () |
| method_kwargs = {} |
| if args.method in ('items', 'kvitems'): |
| method_args = args.prefix, |
| if args.multiple_values: |
| method_kwargs['multiple_values'] = True |
| header = '#: ' + METHODS_WITH_COLUMN_HEADERS[args.method] |
| print(header) |
| print('-' * len(header)) |
|
|
| |
| stdin = sys.stdin |
| if hasattr(stdin, 'buffer'): |
| stdin = stdin.buffer |
|
|
| enumerated_results = enumerate(method(stdin, *method_args, **method_kwargs)) |
| if args.method == 'items': |
| for i, result in enumerated_results: |
| print('%i: %s' % (i, result)) |
| else: |
| for i, result in enumerated_results: |
| print('%i: %s' % (i, ', '.join(to_string(bit) for bit in result))) |
|
|
| if __name__ == '__main__': |
| dump() |
