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#!/usr/bin/python
# encoding: utf-8
# Copyright © 2012 Felix Richter <wtfpl@syntax-fehler.de>
# This work is free. You can redistribute it and/or modify it under the
# terms of the Do What The Fuck You Want To Public License, Version 2,
# as published by Sam Hocevar. See the COPYING file for more details.
# Standard Library imports
import json
import sys
import glob
import argparse
# JsonPath-RW imports
from jsonpath_ng import parse
def find_matches_for_file(expr, f):
return expr.find(json.load(f))
def print_matches(matches):
print('\n'.join(['{0}'.format(match.value) for match in matches]))
def main(*argv):
parser = argparse.ArgumentParser(
description='Search JSON files (or stdin) according to a JSONPath expression.',
formatter_class=argparse.RawTextHelpFormatter,
epilog="""
Quick JSONPath reference (see more at https://github.com/kennknowles/python-jsonpath-rw)
atomics:
$ - root object
`this` - current object
operators:
path1.path2 - same as xpath /
path1|path2 - union
path1..path2 - somewhere in between
fields:
fieldname - field with name
* - any field
[_start_?:_end_?] - array slice
[*] - any array index
""")
parser.add_argument('expression', help='A JSONPath expression.')
parser.add_argument('files', metavar='file', nargs='*', help='Files to search (if none, searches stdin)')
args = parser.parse_args(argv[1:])
expr = parse(args.expression)
glob_patterns = args.files
if len(glob_patterns) == 0:
# stdin mode
print_matches(find_matches_for_file(expr, sys.stdin))
else:
# file paths mode
for pattern in glob_patterns:
for filename in glob.glob(pattern):
with open(filename) as f:
print_matches(find_matches_for_file(expr, f))
def entry_point():
main(*sys.argv)
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