On Fri, Jul 14, 2017 at 01:41:58AM +0300, Michael S. Tsirkin wrote:
> On Thu, Jul 13, 2017 at 12:17:40PM -0300, Eduardo Habkost wrote:
> > > > Oh right. So you need to find dots and split at these points.
> > > > Something like the below? Completely untested.
> > > >
> > > > int mstcmp(const char *s1, const char *s2)
> > > > {
> > > > const char *e1, *e2;
> > > > int l1, l2, c;
> > > >
> > > > do {
> > > > e1 = strchr(s1, '.');
> > > > e2 = strchr(s2, '.');
> > > >
> > > > l1 = e1 ? e1 - s1 + 1 : strlen(s1);
> > > > l2 = e2 ? e2 - s2 + 1 : strlen(s2);
> > > >
> > > > /* compare numerically: shorter strings give smaller
> > > > numbers */
> > > > if (l1 != l2) {
> > > > break;
> > > > }
> > > > c = strncmp(s1, s2, l1);
> > > > if (c) {
> > > > return c;
> > > > }
> > > > s1 += l1;
> > > > s2 += l1;
> > > > } while (l1);
> > > >
> > > > return l1 - l2;
> > > > }
> >
> > I believe copying strverscmp() from gnulib as-is is better than
> > reimplementing a subset of it.
>
> I would then probably copy it unconditionally.
That's probably what I will do. Saving a few bytes in the QEMU
binary is probably not worth the extra ./configure cruft.
--
Eduardo
