Re: [Qemu-devel] [PATCH v2 06/14] qapi: Add qstring_append_format()

[Fam Zheng <famz@redhat.com>]

On Mon, 12/21 17:31, Eric Blake wrote:
> Back in commit 764c1ca (Nov 2009), we added qstring_append_int().
> However, it did not see any use until commit 190c882 (Jan 2015).
> Furthermore, it has a rather limited use case - to print anything
> else, callers still have to format into a temporary buffer, unless
> we want to introduce an explosion of new qstring_append_* methods
> for each useful type to print.
> 
> A much better approach is to add a wrapper that merges printf
> behavior onto qstring_append, via the new qstring_append_format()
> (and its vararg counterpart).  In fact, with that in place, we
> no longer need qstring_append_int().
> 
> Other immediate uses for the new function include simplifying
> two existing clients of qstring_append() on a just-formatted
> buffer, and the fact that we can take advantage of printf width
> manipulations for more efficient indentation.
> 
> Signed-off-by: Eric Blake <eblake@redhat.com>

Reviewed-by: Fam Zheng <famz@redhat.com>