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Annotation of embedaddon/php/main/strlcat.c, revision 1.1.1.1

1.1       misho       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 321634 2012-01-01 13:15:04Z felipe $ */
                     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:  */