Return to strlcat.c CVS log

Up to [contributed] / dgamelaunch-openbsd

Annotation of dgamelaunch-openbsd/strlcat.c, Revision 1.1

1.1     ! rubenllo    1: /*     $OpenBSD: strlcat.c,v 1.8 2001/05/13 15:40:15 deraadt Exp $     */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
        !             5:  * All rights reserved.
        !             6:  *
        !             7:  * Redistribution and use in source and binary forms, with or without
        !             8:  * modification, are permitted provided that the following conditions
        !             9:  * are met:
        !            10:  * 1. Redistributions of source code must retain the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer.
        !            12:  * 2. Redistributions in binary form must reproduce the above copyright
        !            13:  *    notice, this list of conditions and the following disclaimer in the
        !            14:  *    documentation and/or other materials provided with the distribution.
        !            15:  * 3. The name of the author may not be used to endorse or promote products
        !            16:  *    derived from this software without specific prior written permission.
        !            17:  *
        !            18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
        !            19:  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
        !            20:  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
        !            21:  * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
        !            22:  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
        !            23:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
        !            24:  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
        !            25:  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
        !            26:  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
        !            27:  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            28:  */
        !            29:
        !            30: #if defined(LIBC_SCCS) && !defined(lint)
        !            31: static char *rcsid =
        !            32:   "$OpenBSD: strlcat.c,v 1.8 2001/05/13 15:40:15 deraadt Exp $";
        !            33: #endif /* LIBC_SCCS and not lint */
        !            34:
        !            35: #include <sys/types.h>
        !            36: #include <string.h>
        !            37:
        !            38: /*
        !            39:  * Appends src to string dst of size siz (unlike strncat, siz is the
        !            40:  * full size of dst, not space left).  At most siz-1 characters
        !            41:  * will be copied.  Always NUL terminates (unless siz <= strlen(dst)).
        !            42:  * Returns strlen(src) + MIN(siz, strlen(initial dst)).
        !            43:  * If retval >= siz, truncation occurred.
        !            44:  */
        !            45: size_t
        !            46: strlcat (dst, src, siz)
        !            47:      char *dst;
        !            48:      const char *src;
        !            49:      size_t siz;
        !            50: {
        !            51:   register char *d = dst;
        !            52:   register const char *s = src;
        !            53:   register size_t n = siz;
        !            54:   size_t dlen;
        !            55:
        !            56:   /* Find the end of dst and adjust bytes left but don't go past end */
        !            57:   while (n-- != 0 && *d != '\0')
        !            58:     d++;
        !            59:   dlen = d - dst;
        !            60:   n = siz - dlen;
        !            61:
        !            62:   if (n == 0)
        !            63:     return (dlen + strlen (s));
        !            64:   while (*s != '\0')
        !            65:     {
        !            66:       if (n != 1)
        !            67:         {
        !            68:           *d++ = *s;
        !            69:           n--;
        !            70:         }
        !            71:       s++;
        !            72:     }
        !            73:   *d = '\0';
        !            74:
        !            75:   return (dlen + (s - src));    /* count does not include NUL */
        !            76: }