Re: [Qemu-devel] [PATCH 2/4] hmp: factor out ringbuf_print_help()

[Luiz Capitulino <lcapitulino@redhat.com>]

On Mon,  2 Sep 2013 17:01:46 +0800
Lei Li <lilei@linux.vnet.ibm.com> wrote:

> Factor out ringbuf_print_help(), which will be called in
> hmp_read_ringbuf_cb() reading data that can be written with
> monitor_printf() to the console from ringbuf backend.
> 
> Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com>
> ---
>  hmp.c |   31 +++++++++++++++++++------------
>  1 files changed, 19 insertions(+), 12 deletions(-)
> 
> diff --git a/hmp.c b/hmp.c
> index fcca6ae..624ed6f 100644
> --- a/hmp.c
> +++ b/hmp.c
> @@ -752,6 +752,24 @@ void hmp_pmemsave(Monitor *mon, const QDict *qdict)
>      hmp_handle_error(mon, &errp);
>  }
>  
> +static void ringbuf_print_help(Monitor *mon, const char *data)

That's a very bad name. You could call it ringbuf_print_contents(),
but then I think you should pass a size parameter. Or, you call it
ringbuf_print_char() and keep the loop in the caller.

> +{
> +    int i;
> +
> +    for (i = 0; data[i]; i++) {
> +        unsigned char ch = data[i];
> +
> +        if (ch == '\\') {
> +            monitor_printf(mon, "\\\\");
> +        } else if ((ch < 0x20 && ch != '\n' && ch != '\t') || ch == 0x7F) {
> +            monitor_printf(mon, "\\u%04X", ch);
> +        } else {
> +            monitor_printf(mon, "%c", ch);
> +        }
> +
> +    }
> +}
> +
>  void hmp_ringbuf_write(Monitor *mon, const QDict *qdict)
>  {
>      const char *chardev = qdict_get_str(qdict, "device");
> @@ -769,7 +787,6 @@ void hmp_ringbuf_read(Monitor *mon, const QDict *qdict)
>      const char *chardev = qdict_get_str(qdict, "device");
>      char *data;
>      Error *errp = NULL;
> -    int i;
>  
>      data = qmp_ringbuf_read(chardev, size, false, 0, &errp);
>      if (errp) {
> @@ -778,18 +795,8 @@ void hmp_ringbuf_read(Monitor *mon, const QDict *qdict)
>          return;
>      }
>  
> -    for (i = 0; data[i]; i++) {
> -        unsigned char ch = data[i];
> -
> -        if (ch == '\\') {
> -            monitor_printf(mon, "\\\\");
> -        } else if ((ch < 0x20 && ch != '\n' && ch != '\t') || ch == 0x7F) {
> -            monitor_printf(mon, "\\u%04X", ch);
> -        } else {
> -            monitor_printf(mon, "%c", ch);
> -        }
> +    ringbuf_print_help(mon, data);
>  
> -    }
>      monitor_printf(mon, "\n");
>      g_free(data);
>  }