/*
 * Copyright (c) 2010-2024 Belledonne Communications SARL.
 *
 * This file is part of linphone-desktop
 * (see https://www.linphone.org).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#include "Utils.hpp"

// =============================================================================

char *Utils::rstrstr(const char *a, const char *b) {
	size_t a_len = strlen(a);
	size_t b_len = strlen(b);

	if (b_len > a_len) return nullptr;

	for (const char *s = a + a_len - b_len; s >= a; --s) {
		if (!strncmp(s, b, b_len)) return const_cast<char *>(s);
	}

	return nullptr;
}