Annotation of embedaddon/php/main/strlcat.c, revision 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: */
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