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Re: [libvirt] Remove bashisms from libvirt-guests



On 12/17/2010 04:09 AM, Laurent Léonard wrote:
> Hi,
> 
> The attached patch removes bashisms from libvirt-guests.
> 
> TEXTDOMAINDIR is not specified, so system default will be used 
> ("/usr/share/locale" on Debian, I don't know if it's the same on Fedora).

Hmm; that should be derived from one of the autoconf-provided
installation directory names; I'll look more into the correct value to
use (that is, it should line up with whatever ./configure --prefix=...
you used, by using some form of @prefix@ in the .in version of the
script).  For example, see how we set $sysconfdir.

> 
> "xgettext -L Shell" output is the same with gettext shell functions as with 
> $"..." deprecated Bash-specific syntax.
> 
> Please generate po files somewhere in the source tree.

That's just a matter of modifying po/POTFILES.in to recognize that our
init scripts have translatable strings.

> +++ b/tools/libvirt-guests.init.in
> @@ -31,6 +31,11 @@ libvirtd= sbindir@/libvirtd
>  # Source function library.
>  . "$sysconfdir"/rc.d/init.d/functions
>  
> +. gettext.sh

Must be specified as an absolute path, to avoid accidentally sourcing a
trojan script.

> +
> +TEXTDOMAIN=libvirt-guests
> +export TEXTDOMAIN

We can assume POSIX sh here, and do this on one line instead of two.
And the domain should be libvirt, rather than libvirt-guests (that is,
share the same .mo files as the rest of libvirt).

>      if [ "x$ON_BOOT" != xstart ]; then
> -        echo $"libvirt-guests is configured not to start any guests on boot"
> +        gettext "libvirt-guests is configured not to start any guests on boot"; echo

So gettext(1) doesn't output a trailing newline?  Okay.

>  
>      name=$(guest_name $uri $guest)
> -    label=$"Suspending $name: "
> +    label="`eval_gettext \"Suspending \\$name: \"`"

Assume a POSIX sh; we do NOT want to use `` in this script, and the
outer "" are not necessary in assignment context.  This is much more
legible as:

label=$(eval_gettext "Suspending \$name: ")

>      echo -n "$label"
>      run_virsh $uri managedsave $guest >/dev/null &
>      virsh_pid=$!
> @@ -187,7 +192,7 @@ suspend_guest()
>              printf '\r%s%-12s ' "$label" "..."
>          fi
>      done
> -    retval wait $virsh_pid && printf '\r%s%-12s\n' "$label" $"done"
> +    retval wait $virsh_pid && printf '\r%s%-12s\n' "$label" "`gettext \"done\"`"

Likewise: "$(gettext "done")"

But thanks for taking this on; we're getting closer to a nice solution.

-- 
Eric Blake   eblake redhat com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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