Mercurial > hg > config
annotate python/jsonex.py @ 842:03f9657514e9
while we might not want Octave *that* much, we will never want OCAML
| author | Jeff Hammel <k0scist@gmail.com> |
|---|---|
| date | Sun, 09 Jul 2017 15:01:16 -0700 |
| parents | 0fa456446fea |
| children |
| rev | line source |
|---|---|
| 134 | 1 #!/usr/bin/env python |
| 2 | |
| 3 """ | |
| 4 JSON explorer | |
| 5 """ | |
| 6 | |
| 687 | 7 import argparse |
| 134 | 8 import json |
| 687 | 9 import os |
| 134 | 10 import sys |
| 687 | 11 import urllib2 |
| 134 | 12 |
| 692 | 13 def dereference(obj, key): |
| 14 if obj is None: | |
| 15 return None | |
| 16 if isinstance(obj, dict): | |
| 17 return obj[key] | |
| 18 return obj[int(key)] | |
| 19 | |
| 134 | 20 def main(args=sys.argv[1:]): |
| 687 | 21 |
| 22 # command line | |
|
836
0fa456446fea
use module docstring for description, as intended
Jeff Hammel <k0scist@gmail.com>
parents:
692
diff
changeset
|
23 parser = argparse.ArgumentParser(description=__doc__) |
| 687 | 24 parser.add_argument('input', nargs='?', |
| 25 help="input file or url (read from stdin if ommitted)") | |
| 26 parser.add_argument('object', nargs='*', | |
| 27 help="object in dotted notation") | |
| 28 | |
| 29 options = parser.parse_args(args) | |
| 134 | 30 |
| 687 | 31 # get data |
| 32 if not options.input or options.input == '-': | |
| 33 data = sys.stdin | |
| 34 elif'://' in options.input: | |
| 35 data = urllib2.urlopen(options.input) | |
| 36 else: | |
| 37 data = open(options.input, 'r') | |
| 38 obj = json.load(data) | |
| 39 | |
| 40 if options.object: | |
| 41 for o in options.object: | |
| 689 | 42 base = obj |
| 692 | 43 for key in o.strip().split('.'): # split into objects |
| 44 base = dereference(base, key) | |
| 45 if base is None: | |
| 46 break | |
| 47 print (json.dumps(base)) | |
| 134 | 48 else: |
| 692 | 49 print (json.dumps(obj, indent=2, sort_keys=True)) |
| 134 | 50 |
| 51 if __name__ == '__main__': | |
| 52 main() |