A python implementation of https://github.com/jmespath/jp

jpsearch.py

#!/bin/env python
"""
USAGE: jpsearch [--unquoted|-u] [-f|--filename <json-file>] <JMESPath>
   Reads json from standard input, or the file
   if given.  Then searches that as instructed
   by the JMESPath; and prints the result.  If
   the result is a string and --unquoted is given
   the string is printed without quotation. See
   also http://jmespath.org/
"""

from __future__ import print_function
from sys import stdin, stderr, argv
from json import load, dumps
from jmespath import search

def usage_and_exit():
    print(__doc__)
    exit(0)

def parse_args():
    n = len(argv)
    if (n < 2) or (5 < n):
        print("foo")
        usage_and_exit()
    unquoted = False
    input = stdin
    i = [0]

    def next_arg():
        i[0] += 1
        if i[0] >= n:
            Exception("Exausted args unexpectedly")
        return argv[i[0]]

    while True:
        if i[0] + 1 >= n:
            break
        a = next_arg()
        if a == '-u' or a == '--unquoted':
            unquoted = True
        elif a == '-f' or a == '--filename':
            input = open(next_arg())
        elif a == '-h' or a == '--help':
            print('bar ' + a)
            usage_and_exit()
        elif a.startswith('-'):
            usage_and_exit()
        else:
            path = a
    return (unquoted, input, path)

def main():
    (unquoted, input, path) = parse_args()
    try:
        json = load(input)
    except Exception as e:
        print("Unable to parse json: %s" % str(e), file=stderr)
        exit(1)
    result = search(path, json)
    if unquoted and isinstance(result, basestring):
        print(result)
    else:
        print(dumps(result, sort_keys=True, indent=2))

main()