strzcat.c

/*
 * Copyright (c) 2008 Dag Wieers <dag@wieers.com>
 *
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/param.h>

#ifndef HAVE_STRZCAT

#define STRZCAT_SIZE 65535

/*
 * Append an variable number of strings together
 */
size_t strzcat(char *dst, char *format, ...) {
    // FIXME: Implement similar boundary checks as strlcat

    int offset = strlen(dst);
    va_list ap;
    va_start(ap, format);
    size_t dlen = vsnprintf(&dst[offset], STRZCAT_SIZE-offset, format, ap);
    va_end(ap);

    return ( dlen+offset );
}

#endif /* !HAVE_STRZCAT */