On Fri, Jun 02, 2017 at 09:10:09PM +0200, SZEDER Gábor wrote:
> @@ -1785,15 +1785,15 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
> } else if (!strcmp(arg, "--author-date-order")) {
> revs->sort_order = REV_SORT_BY_AUTHOR_DATE;
> revs->topo_order = 1;
> - } else if (starts_with(arg, "--early-output")) {
> + } else if (skip_prefix(arg, "--early-output", &optarg)) {
> int count = 100;
> - switch (arg[14]) {
> + switch (*optarg) {
> case '=':
> - count = atoi(arg+15);
> + count = atoi(optarg + 1);
> /* Fallthrough */
> case 0:
> revs->topo_order = 1;
> - revs->early_output = count;
> + revs->early_output = count;
> }
What happens if I say "--early-output-foobar"? There should probably be
a "default" here that rejects it. Though we'd probably to goto to get to
the unknown block, yuck.
Perhaps we could do:
if (skip_prefix(arg, "--early-output", &optarg) &&
(*optarg == '=' || !*optarg)) {
int count = *optarg ? atoi(optarg + 1) : 100;
revs->topo_order = 1;
revs->early_output = count;
}
Alternatively, a helper like:
int match_opt(const char *have, const char *want, const char **argout)
{
const char *arg;
if (!skip_prefix(have, want, &arg))
return 0;
if (!*arg)
*argout = NULL;
else if (*arg == '=')
*argout = arg + 1;
else
return 0;
return 1;
}
would let us do:
if (match_opt(arg, "--early-output"), &optarg)) {
int count = optarg ? atoi(optarg) : 100;
...
}
which is a little nicer and could maybe help other options (I didn't see
any, though). If we're going to go that route, though, I suspect there
may be some helpers we already have. Looks like parse_long_opt() is
almost there, but doesn't handle options. I wonder if we could reuse
bits of parse-options here (or even better, just parse-optify many of
these).
Anyway, none of that is caused by your patch, but at least doing the
minimal fix (my first hunk) seems like it fits into your series.
-Peff