cmd: implement b_arglist_get_* functions

cmd/arglist.c

@@ -757,6 +757,60 @@ void b_arglist_destroy(struct b_arglist *args)
 	free(args);
 }
 
+b_status b_arglist_get_string(
+	const b_arglist *args, unsigned int opt_id, unsigned int arg_id,
+	unsigned int index, const char **out)
+{
+	b_arglist_iterator it = {0};
+	b_arglist_iterator_begin(args, opt_id, arg_id, &it);
+	while (b_arglist_iterator_is_valid(&it)) {
+		if (it.value && it.value->val_str) {
+			*out = it.value->val_str;
+			return B_SUCCESS;
+		}
+
+		b_arglist_iterator_next(&it);
+	}
+
+	return B_ERR_NO_ENTRY;
+}
+
+b_status b_arglist_get_int(
+	const b_arglist *args, unsigned int opt_id, unsigned int arg_id,
+	unsigned int index, long long *out)
+{
+	b_arglist_iterator it = {0};
+	b_arglist_iterator_begin(args, opt_id, arg_id, &it);
+	while (b_arglist_iterator_is_valid(&it)) {
+		if (it.value) {
+			*out = it.value->val_int;
+			return B_SUCCESS;
+		}
+
+		b_arglist_iterator_next(&it);
+	}
+
+	return B_ERR_NO_ENTRY;
+}
+
+b_status b_arglist_get_uint(
+	const b_arglist *args, unsigned int opt_id, unsigned int arg_id,
+	unsigned int index, unsigned long long *out)
+{
+	b_arglist_iterator it = {0};
+	b_arglist_iterator_begin(args, opt_id, arg_id, &it);
+	while (b_arglist_iterator_is_valid(&it)) {
+		if (it.value && it.value->val_uint) {
+			*out = it.value->val_uint;
+			return B_SUCCESS;
+		}
+
+		b_arglist_iterator_next(&it);
+	}
+
+	return B_ERR_NO_ENTRY;
+}
+
 size_t b_arglist_get_count(
 	const b_arglist *args, unsigned int opt_id, unsigned int arg_id)
 {