parse-options: add parse_options_check to validate option specs.
It only searches for now for the dreaded LASTARG_DEFAULT | OPTARG
combination, but can be extended to check for any other forbidden
combination.
Options are checked each time we call parse_options_start.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/parse-options.c b/parse-options.c
index b85cab2..79de18b 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -306,6 +306,28 @@
}
}
+static void parse_options_check(const struct option *opts)
+{
+ int err = 0;
+
+ for (; opts->type != OPTION_END; opts++) {
+ if ((opts->flags & PARSE_OPT_LASTARG_DEFAULT) &&
+ (opts->flags & PARSE_OPT_OPTARG)) {
+ if (opts->long_name) {
+ error("`--%s` uses incompatible flags "
+ "LASTARG_DEFAULT and OPTARG", opts->long_name);
+ } else {
+ error("`-%c` uses incompatible flags "
+ "LASTARG_DEFAULT and OPTARG", opts->short_name);
+ }
+ err |= 1;
+ }
+ }
+
+ if (err)
+ exit(129);
+}
+
void parse_options_start(struct parse_opt_ctx_t *ctx,
int argc, const char **argv, const char *prefix,
int flags)
@@ -331,6 +353,8 @@
{
int internal_help = !(ctx->flags & PARSE_OPT_NO_INTERNAL_HELP);
+ parse_options_check(options);
+
/* we must reset ->opt, unknown short option leave it dangling */
ctx->opt = NULL;
