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    1: /*
    2:   +----------------------------------------------------------------------+
    3:   | PHP Version 5                                                        |
    4:   +----------------------------------------------------------------------+
    5:   | Copyright (c) 1997-2012 The PHP Group                                |
    6:   +----------------------------------------------------------------------+
    7:   | This source file is subject to version 3.01 of the PHP license,      |
    8:   | that is bundled with this package in the file LICENSE, and is        |
    9:   | available through the world-wide-web at the following url:           |
   10:   | http://www.php.net/license/3_01.txt                                  |
   11:   | If you did not receive a copy of the PHP license and are unable to   |
   12:   | obtain it through the world-wide-web, please send a note to          |
   13:   | license@php.net so we can mail you a copy immediately.               |
   14:   +----------------------------------------------------------------------+
   15:   | Author:                                                              |
   16:   +----------------------------------------------------------------------+
   17: */
   18: 
   19: /* $Id: strlcat.c,v 1.1.1.1 2012/02/21 23:48:05 misho Exp $ */
   20: 
   21: #include "php.h"
   22: 
   23: #ifndef HAVE_STRLCAT
   24: 
   25: /*	$OpenBSD: strlcat.c,v 1.2 1999/06/17 16:28:58 millert Exp $	*/
   26: 
   27: /*
   28:  * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
   29:  * All rights reserved.
   30:  *
   31:  * Redistribution and use in source and binary forms, with or without
   32:  * modification, are permitted provided that the following conditions
   33:  * are met:
   34:  * 1. Redistributions of source code must retain the above copyright
   35:  *    notice, this list of conditions and the following disclaimer.
   36:  * 2. Redistributions in binary form must reproduce the above copyright
   37:  *    notice, this list of conditions and the following disclaimer in the
   38:  *    documentation and/or other materials provided with the distribution.
   39:  * 3. The name of the author may not be used to endorse or promote products
   40:  *    derived from this software without specific prior written permission.
   41:  *
   42:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
   43:  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
   44:  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
   45:  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   46:  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   47:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
   48:  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   49:  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   50:  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   51:  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   52:  */
   53: 
   54: #if defined(LIBC_SCCS) && !defined(lint)
   55: static char *rcsid = "$OpenBSD: strlcat.c,v 1.2 1999/06/17 16:28:58 millert Exp $";
   56: #endif /* LIBC_SCCS and not lint */
   57: 
   58: #include <sys/types.h>
   59: #include <string.h>
   60: 
   61: /*
   62:  * Appends src to string dst of size siz (unlike strncat, siz is the
   63:  * full size of dst, not space left).  At most siz-1 characters
   64:  * will be copied.  Always NUL terminates (unless siz == 0).
   65:  * Returns strlen(src); if retval >= siz, truncation occurred.
   66:  */
   67: PHPAPI size_t php_strlcat(dst, src, siz)
   68: 	char *dst;
   69: 	const char *src;
   70: 	size_t siz;
   71: {
   72: 	register char *d = dst;
   73: 	register const char *s = src;
   74: 	register size_t n = siz;
   75: 	size_t dlen;
   76: 
   77: 	/* Find the end of dst and adjust bytes left but don't go past end */
   78: 	while (*d != '\0' && n-- != 0)
   79: 		d++;
   80: 	dlen = d - dst;
   81: 	n = siz - dlen;
   82: 
   83: 	if (n == 0)
   84: 		return(dlen + strlen(s));
   85: 	while (*s != '\0') {
   86: 		if (n != 1) {
   87: 			*d++ = *s;
   88: 			n--;
   89: 		}
   90: 		s++;
   91: 	}
   92: 	*d = '\0';
   93: 
   94: 	return(dlen + (s - src));	/* count does not include NUL */
   95: }
   96: 
   97: #endif /* !HAVE_STRLCAT */
   98: 
   99: /*
  100:  * Local variables:
  101:  * tab-width: 4
  102:  * c-basic-offset: 4
  103:  * End:
  104:  * vim600: sw=4 ts=4 fdm=marker
  105:  * vim<600: sw=4 ts=4
  106:  */