Json git hook for write up

json_hook.py

import json


def precommit(git_state):
    for fname in git_state["files"]:
        if fname.endswith(".json"):
            with open(fname, "r") as f:
                try:
                    json.loads(f.read())
                    continue
                except ValueError, e:
                    print "Invalid json in %s:" % fname
                    print e.message
                    return False
    return True