Christian Heimes | 9054000 | 2008-05-08 14:29:10 +0000 | [diff] [blame] | 1 | r"""Command-line tool to validate and pretty-print JSON |
| 2 | |
| 3 | Usage:: |
| 4 | |
Benjamin Peterson | c6b607d | 2009-05-02 12:36:44 +0000 | [diff] [blame] | 5 | $ echo '{"json":"obj"}' | python -m json.tool |
Christian Heimes | 9054000 | 2008-05-08 14:29:10 +0000 | [diff] [blame] | 6 | { |
| 7 | "json": "obj" |
| 8 | } |
Benjamin Peterson | c6b607d | 2009-05-02 12:36:44 +0000 | [diff] [blame] | 9 | $ echo '{ 1.2:3.4}' | python -m json.tool |
Serhiy Storchaka | c510a04 | 2013-02-21 20:19:16 +0200 | [diff] [blame] | 10 | Expecting property name enclosed in double quotes: line 1 column 3 (char 2) |
Christian Heimes | 9054000 | 2008-05-08 14:29:10 +0000 | [diff] [blame] | 11 | |
| 12 | """ |
| 13 | import sys |
| 14 | import json |
| 15 | |
| 16 | def main(): |
| 17 | if len(sys.argv) == 1: |
| 18 | infile = sys.stdin |
| 19 | outfile = sys.stdout |
| 20 | elif len(sys.argv) == 2: |
Ezio Melotti | 057bcb4 | 2012-11-29 02:15:18 +0200 | [diff] [blame] | 21 | infile = open(sys.argv[1], 'r') |
Christian Heimes | 9054000 | 2008-05-08 14:29:10 +0000 | [diff] [blame] | 22 | outfile = sys.stdout |
| 23 | elif len(sys.argv) == 3: |
Ezio Melotti | 057bcb4 | 2012-11-29 02:15:18 +0200 | [diff] [blame] | 24 | infile = open(sys.argv[1], 'r') |
| 25 | outfile = open(sys.argv[2], 'w') |
Christian Heimes | 9054000 | 2008-05-08 14:29:10 +0000 | [diff] [blame] | 26 | else: |
Benjamin Peterson | c6b607d | 2009-05-02 12:36:44 +0000 | [diff] [blame] | 27 | raise SystemExit(sys.argv[0] + " [infile [outfile]]") |
Ezio Melotti | 057bcb4 | 2012-11-29 02:15:18 +0200 | [diff] [blame] | 28 | with infile: |
| 29 | try: |
| 30 | obj = json.load(infile) |
| 31 | except ValueError as e: |
| 32 | raise SystemExit(e) |
| 33 | with outfile: |
| 34 | json.dump(obj, outfile, sort_keys=True, indent=4) |
| 35 | outfile.write('\n') |
Christian Heimes | 9054000 | 2008-05-08 14:29:10 +0000 | [diff] [blame] | 36 | |
| 37 | |
| 38 | if __name__ == '__main__': |
| 39 | main() |