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Annotation of embedaddon/php/main/strlcpy.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: strlcpy.c 321634 2012-01-01 13:15:04Z felipe $ */
        !            20: 
        !            21: #include "php.h"
        !            22: 
        !            23: #ifndef HAVE_STRLCPY
        !            24: 
        !            25: /*     $OpenBSD: strlcpy.c,v 1.4 1999/05/01 18:56:41 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: strlcpy.c,v 1.4 1999/05/01 18:56:41 millert Exp $";
        !            56: #endif /* LIBC_SCCS and not lint */
        !            57: 
        !            58: #include <sys/types.h>
        !            59: #include <string.h>
        !            60: 
        !            61: /*
        !            62:  * Copy src to string dst of size siz.  At most siz-1 characters
        !            63:  * will be copied.  Always NUL terminates (unless siz == 0).
        !            64:  * Returns strlen(src); if retval >= siz, truncation occurred.
        !            65:  */
        !            66: PHPAPI size_t php_strlcpy(dst, src, siz)
        !            67:        char *dst;
        !            68:        const char *src;
        !            69:        size_t siz;
        !            70: {
        !            71:        register char *d = dst;
        !            72:        register const char *s = src;
        !            73:        register size_t n = siz;
        !            74: 
        !            75:        /* Copy as many bytes as will fit */
        !            76:        if (n != 0 && --n != 0) {
        !            77:                do {
        !            78:                        if ((*d++ = *s++) == 0)
        !            79:                                break;
        !            80:                } while (--n != 0);
        !            81:        }
        !            82: 
        !            83:        /* Not enough room in dst, add NUL and traverse rest of src */
        !            84:        if (n == 0) {
        !            85:                if (siz != 0)
        !            86:                        *d = '\0';              /* NUL-terminate dst */
        !            87:                while (*s++)
        !            88:                        ;
        !            89:        }
        !            90: 
        !            91:        return(s - src - 1);    /* count does not include NUL */
        !            92: }
        !            93: 
        !            94: #endif /* !HAVE_STRLCPY */
        !            95: 
        !            96: /*
        !            97:  * Local variables:
        !            98:  * tab-width: 4
        !            99:  * c-basic-offset: 4
        !           100:  * End:
        !           101:  * vim600: sw=4 ts=4 fdm=marker
        !           102:  * vim<600: sw=4 ts=4
        !           103:  */