[libvirt] Remove bashisms from libvirt-guests
Laurent Léonard
laurent at open-minds.org
Sat Dec 18 11:51:45 UTC 2010
Le vendredi 17 décembre 2010 15:08:44, Eric Blake a écrit :
> 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: "$(gettext "done")"
>
> But thanks for taking this on; we're getting closer to a nice solution.
I followed:
http://www.gnu.org/software/hello/manual/gettext/Preparing-Shell-Scripts.html
but totally agree with your comments.
Indeed gettext(1) doesn't output a trailing newline.
Don't forget the
- timeout=$[timeout - 1]
+ timeout=$((timeout - 1))
I also added in the "Remove bashisms" patch, if you did'nt noticed it.
Thank you,
--
Laurent Léonard
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