/*
 * Copyright (C) 2021  P. J. McDermott
 *
 * This file is part of Dodge Balls
 *
 * Dodge Balls 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.
 *
 * Dodge Balls 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 Dodge Balls.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <stdlib.h>
#include <string.h>

char *
db_strcat(const char *str1, const char *str2)
{
	size_t  str1_len;
	size_t  str2_len;
	char   *dest;

	str1_len = strlen(str1);
	str2_len = strlen(str2);

	dest = malloc((str1_len + str2_len + 1) * sizeof(*dest));
	if (dest == NULL) {
		return NULL;
	}

	memcpy(dest, str1, str1_len);
	memcpy(dest + str1_len, str2, str2_len);
	dest[str1_len + str2_len] = '\0';

	return dest;
}