#!/usr/bin/python3

import json
import sys

import yaml

def usage():
    print("""
Usage: yaml2json

Convert the standard input in yaml into json to the standard output.

""")

def convert(in_, out):
    json.dump(yaml.load(in_), out, sort_keys=True, indent=4)

def main():
    if len(sys.argv) != 1:
        usage()
        sys.exit(1)
    convert(sys.stdin, sys.stdout)

if __name__ == "__main__":
    main()