Re: [PATCH 1/2] qemu-img: refactor dump_map_entry JSON format output

[Eric Blake <eblake@redhat.com>]

On 3/22/20 4:11 AM, Eyal Moscovici wrote:
> Previously dump_map_entry identified whether we need to start a new JSON
> array based on whether start address == 0. In this refactor we remove
> this assumption as in following patches we will allow map to start from
> an arbitrary position.
> 
> Acked-by: Mark Kanda <mark.kanda@oracle.com>
> Signed-off-by: Eyal Moscovici <eyal.moscovici@oracle.com>
> ---
>   qemu-img.c | 12 ++++++++----
>   1 file changed, 8 insertions(+), 4 deletions(-)
> 

> @@ -2871,8 +2870,8 @@ static int dump_map_entry(OutputFormat output_format, MapEntry *e,
>           }
>           putchar('}');
>   
> -        if (!next) {
> -            printf("]\n");
> +        if (next) {
> +            printf(",\n");

As long as you're touching this, puts(",") is slightly more efficient 
than printf().  But what you have is not wrong.

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org