File size: 1,864 Bytes
a1af790 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | '''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))
# Use the raw bytes stream in stdin if possible
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() |