Function opt_force_featureset

lightningd/options.c:632–672

}

static char *opt_force_featureset(const char *optarg,
				  struct lightningd *ld)
{
	char **parts = tal_strsplit(tmpctx, optarg, "/", STR_EMPTY_OK);
	if (tal_count(parts) != NUM_FEATURE_PLACE + 1) {
		if (!strstarts(optarg, "-") && !strstarts(optarg, "+"))
			return "Expected 5 feature sets (init/globalinit/"
			       " node_announce/channel/bolt11) each terminated by /"
			       " OR +/-<single_bit_num>";

		char *endp;
		long int n = strtol(optarg + 1, &endp, 10);
		const struct feature_set *f;
		if (*endp || endp == optarg + 1)
			return "Invalid feature number";

		f = feature_set_for_feature(NULL, n);
		if (strstarts(optarg, "-")
		    && !feature_set_sub(ld->our_features, take(f)))
			return "Feature unknown";

		if (strstarts(optarg, "+")
		    && !feature_set_or(ld->our_features, take(f)))
			return "Feature already flagged-on";

		return NULL;
	}
	for (size_t i = 0; parts[i]; i++) {
		char **bits = tal_strsplit(tmpctx, parts[i], ",", STR_EMPTY_OK);
		tal_resize(&ld->our_features->bits[i], 0);

		for (size_t j = 0; bits[j]; j++) {
			char *endp;
			long int n = strtol(bits[j], &endp, 10);
			if (*endp || endp == bits[j])
				return "Invalid bitnumber";
			set_feature_bit(&ld->our_features->bits[i], n);
		}
	}
	return NULL;
}

static void dev_register_opts(struct lightningd *ld)
{