netdev - Re: [PATCH iproute2] bridge/mdb: fix missing new line when show bridge mdb

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Message-ID: <20180906134037.GA1418@leo.usersys.redhat.com>
Date:   Fri, 7 Sep 2018 08:14:30 +0800
From:   Hangbin Liu <liuhangbin@...il.com>
To:     Stephen Hemminger <stephen@...workplumber.org>
Cc:     netdev@...r.kernel.org, David Ahern <dsahern@...il.com>
Subject: Re: [PATCH iproute2] bridge/mdb: fix missing new line when show
 bridge mdb

Hi Stephen,
On Thu, Sep 06, 2018 at 02:00:53PM +0100, Stephen Hemminger wrote:
> > @@ -164,6 +168,10 @@ static void print_mdb_entry(FILE *f, int ifindex, const struct br_mdb_entry *e,
> >  		print_string(PRINT_ANY, "timer", " %s",
> >  			     format_timer(timer));
> >  	}
> > +
> > +	if (!is_json_context())
> > +		fprintf(f, "\n");
> > +
> >  	close_json_object();
> >  }
> >  
> 
> Thanks for catching this.
> 
> Now that there is a json print library, the preferred pattern for
> this is:
> 	print_string(PRINT_FP, NULL, "\n", NULL);

Are we going to replace all printf() by json print library, even not in
json context? If yes, I can post a v2 patch. Becuase there are still a
lot fprintf() in mdb.c.

> 
> I plan to introduce a helper
> 	print_fp(...)
> 
> and it would be easier if all places were consistent.

cool, that would be more clear.

Thanks
Hangbin