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: }
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