r"""Command-line tool to validate and pretty-print JSON Usage:: $ echo '{"json":"obj"}' | hjson { "json": "obj" } """ from __future__ import with_statement import sys import hjson HELP="""Hjson, a user interface for JSON Usage: hjson [options] hjson [options] hjson (-h | --help) hjson (-V | --version) Options: -h --help Show this screen. -j Output as formatted JSON. -c Output as JSON. -V --version Show version. """; def showerr(msg): sys.stderr.write(msg) sys.stderr.write("\n") def main(): format = 'hjson' args = [] for arg in sys.argv[1:]: if arg == '-h' or arg == '--help': showerr(HELP) return elif arg == '-j': format = 'json' elif arg == '-c': format = 'compact' elif arg == '-V' or arg == '--version': showerr('Hjson ' + hjson.__version__) return elif arg[0] == '-': showerr(HELP) raise SystemExit('unknown option ' + arg) else: args.append(arg) outfile = sys.stdout if len(args) == 0: infile = sys.stdin elif len(args) == 1: infile = open(args[0], 'r') else: showerr(HELP) raise SystemExit('unknown options') with infile: try: obj = hjson.load(infile, use_decimal=True) except ValueError: raise SystemExit(sys.exc_info()[1]) with outfile: if format == 'json': hjson.dumpJSON(obj, outfile, ensure_ascii=False, use_decimal=True, indent=' ') elif format == 'compact': hjson.dumpJSON(obj, outfile, ensure_ascii=False, use_decimal=True, separators=(',', ':')) else: hjson.dump(obj, outfile, ensure_ascii=False, use_decimal=True) outfile.write('\n') if __name__ == '__main__': main()