#!/usr/bin/env python3
# Utility to print JSON entry values, either from stdin or from a file.
# Usage:
#  $ printsomejsonstuff | getjsonvalue myfirstattribute mysecondattribute
# OR
#  $ getjsonvalue myjsonfile myfirstattribute mysecondattribute

import json, sys

if sys.stdin.isatty():
  filename = sys.argv[1]
  keys = sys.argv[2:]
  with open(filename,"r") as f:
    rawjson = json.load(f)
else:
  keys = sys.argv[1:]
  rawjson = sys.stdin.read()

d = json.loads(rawjson)

value = eval("d['%s']"%"']['".join(keys))

if type(value) is str: print(value)
else: print(json.dumps(value,indent=4))