Source.Python/addons/source-python/Python3/json/tool.py at Data-Update · srpg/Source.Python · GitHub

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r"""Command-line tool to validate and pretty-print JSON

Usage::

$ echo '{"json":"obj"}' | python -m json.tool

{

"json": "obj"

}

$ echo '{ 1.2:3.4}' | python -m json.tool

Expecting property name enclosed in double quotes: line 1 column 3 (char 2)

"""

import argparse

import json

import sys

def main():

prog = 'python -m json.tool'

description = ('A simple command line interface for json module '

'to validate and pretty-print JSON objects.')

parser = argparse.ArgumentParser(prog=prog, description=description)

parser.add_argument('infile', nargs='?',

help='a JSON file to be validated or pretty-printed',

default='-')

parser.add_argument('outfile', nargs='?',

help='write the output of infile to outfile',

default=None)

parser.add_argument('--sort-keys', action='store_true', default=False,

help='sort the output of dictionaries alphabetically by key')

parser.add_argument('--no-ensure-ascii', dest='ensure_ascii', action='store_false',

help='disable escaping of non-ASCII characters')

parser.add_argument('--json-lines', action='store_true', default=False,

help='parse input using the JSON Lines format. '

'Use with --no-indent or --compact to produce valid JSON Lines output.')

group = parser.add_mutually_exclusive_group()

group.add_argument('--indent', default=4, type=int,

help='separate items with newlines and use this number '

'of spaces for indentation')

group.add_argument('--tab', action='store_const', dest='indent',

const='\t', help='separate items with newlines and use '

'tabs for indentation')

group.add_argument('--no-indent', action='store_const', dest='indent',

const=None,

help='separate items with spaces rather than newlines')

group.add_argument('--compact', action='store_true',

help='suppress all whitespace separation (most compact)')

options = parser.parse_args()

dump_args = {

'sort_keys': options.sort_keys,

'indent': options.indent,

'ensure_ascii': options.ensure_ascii,

}

if options.compact:

dump_args['indent'] = None

dump_args['separators'] = ',', ':'

try:

if options.infile == '-':

infile = sys.stdin

else:

infile = open(options.infile, encoding='utf-8')

try:

if options.json_lines:

objs = (json.loads(line) for line in infile)

else:

objs = (json.load(infile),)

finally:

if infile is not sys.stdin:

infile.close()

if options.outfile is None:

outfile = sys.stdout

else:

outfile = open(options.outfile, 'w', encoding='utf-8')

with outfile:

for obj in objs:

json.dump(obj, outfile, **dump_args)

outfile.write('\n')

except ValueError as e:

raise SystemExit(e)

if __name__ == '__main__':

try:

main()

except BrokenPipeError as exc:

sys.exit(exc.errno)

Source.Python/addons/source-python/Python3/json/tool.py at Data-Update · srpg/Source.Python · GitHub

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