# check for subdir
        if (name.find("/") > 0):
            subdir = name[0:name.find("/")]
            subdir = self.datadir + "/" + subdir
            if (not os.path.exists(subdir)):
                os.mkdir(subdir)
                open(subdir+"/.nobackup", "w").close()
                open(subdir+"/CACHEDIR.TAG", "w").close()
            file = self.datadir + "/" + name
        # encode as JSON
        try:
            data = json.dumps(data, indent=(4 if nice else None), sort_keys=True)
        except Exception as e:
            log.ERR("JSON encoding failed", e)
            return