Re: [PATCH v2]virsh: Add helper to avoid the strcase check for virsh-*.c

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On 08/14/2012 01:21 AM, Osier Yang wrote:
> * tools/virsh.c: New macro vshStrcasecmp
> * tools/virsh-domain-monitor.c: Use vshStrcasecmp instead of
>                                 strcasecmp
> * tools/virsh-snapshot.c: Likewise
> * cfg.mk: Only avoid doing strcase checking for virsh.c
> ---
>  cfg.mk                       |    2 +-
>  tools/virsh-domain-monitor.c |    2 +-
>  tools/virsh-snapshot.c       |    4 ++--
>  tools/virsh.c                |    1 +
>  4 files changed, 5 insertions(+), 4 deletions(-)

ACK.

> +++ b/tools/virsh-snapshot.c
> @@ -817,8 +817,8 @@ vshSnapSorter(const void *a, const void *b)
>          return sb->snap != NULL;
>  
>      /* User visible sort, so we want locale-specific case comparison.  */

I would have moved this comment...

> -    return strcasecmp(virDomainSnapshotGetName(sa->snap),
> -                      virDomainSnapshotGetName(sb->snap));
> +    return vshStrcasecmp(virDomainSnapshotGetName(sa->snap),
> +                         virDomainSnapshotGetName(sb->snap));
>  }
>  
>  /* Compute a list of snapshots from DOM.  If FROM is provided, the
> diff --git a/tools/virsh.c b/tools/virsh.c
> index 6a5724d..a2674ae 100644
> --- a/tools/virsh.c
> +++ b/tools/virsh.c
> @@ -357,6 +357,7 @@ static void vshDebug(vshControl *ctl, int level, const char *format, ...)
>  
>  /* XXX: add batch support */
>  #define vshPrint(_ctl, ...)   vshPrintExtra(NULL, __VA_ARGS__)
> +#define vshStrcasecmp(S1, S2) strcasecmp(S1, S2)

...to here, right before this #define.  That is, we only need to know
that vshStrcasecmp exists to give us user-visible sorting in one place,
rather than at each caller.

-- 
Eric Blake   eblake@xxxxxxxxxx    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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