[libvirt] [PATCHv3 5/6] virsh: Add vshSuspendTargetCompleter

[Eric Blake]

On 08/26/2013 06:36 AM, Tomas Meszaros wrote:
> vshSuspendTargetCompleter returns targets available for suspend.
> 
> This completer can be used for the command option completion
> (for dompmsuspend, etc.).
> 
> virsh> dompmsuspend --target <TAB>
> mem      disk    hybrid
> virsh> dompmsuspend --target h<TAB>
> virsh> dompmsuspend --target hybrid
> ---
> v2
> * label cleanup renamed to error
> * vshSuspendTargetCompleter added to opts_dom_pm_suspend
> 
> v3
> * removed useless if
> * used virStringFreeList() instead of iteration
> 
>  tools/virsh-domain.c |  3 ++-
>  tools/virsh.c        | 23 +++++++++++++++++++++++
>  tools/virsh.h        |  1 +
>  3 files changed, 26 insertions(+), 1 deletion(-)

This patch looks pretty decent, especially since it is installed as a
per-option handler.

>  
> +char **
> +vshSuspendTargetCompleter(unsigned int unused_flags ATTRIBUTE_UNUSED)
> +{
> +    const char *targets[] = {"mem", "disk", "hybrid"};
> +    const unsigned int targets_size = ARRAY_CARDINALITY(targets);
> +    char **names = NULL;
> +    size_t i;
> +
> +    names = vshMalloc(NULL, sizeof(char *) * (targets_size + 1));
> +
> +    for (i = 0; i < targets_size; i++) {
> +        if (VIR_STRDUP(names[i], targets[i]) < 0)
> +            goto error;
> +    }
> +
> +    names[i] = NULL;
> +    return names;

Call me a hacker, but what's wrong with this equivalent implementation
done by reusing existing code:

char **
vshSuspendTargetCompleter(unsigned int ignored ATTRIBUTE_UNUSED)
{
    return virStringSplit("mem disk hybrid", " ", 0);
}

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

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