Annotation of mandoc/compat_strlcat.c, Revision 1.1
1.1 ! kristaps 1: #ifdef HAVE_STRLCAT
! 2:
! 3: int dummy;
! 4:
! 5: #else
! 6:
! 7: /* $OpenBSD: strlcat.c,v 1.13 2005/08/08 08:05:37 espie Exp $ */
! 8:
! 9: /*
! 10: * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
! 11: *
! 12: * Permission to use, copy, modify, and distribute this software for any
! 13: * purpose with or without fee is hereby granted, provided that the above
! 14: * copyright notice and this permission notice appear in all copies.
! 15: *
! 16: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 17: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 18: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 19: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 20: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
! 21: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
! 22: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 23: */
! 24:
! 25: #include <sys/types.h>
! 26: #include <string.h>
! 27:
! 28: /*
! 29: * Appends src to string dst of size siz (unlike strncat, siz is the
! 30: * full size of dst, not space left). At most siz-1 characters
! 31: * will be copied. Always NUL terminates (unless siz <= strlen(dst)).
! 32: * Returns strlen(src) + MIN(siz, strlen(initial dst)).
! 33: * If retval >= siz, truncation occurred.
! 34: */
! 35: size_t
! 36: strlcat(char *dst, const char *src, size_t siz)
! 37: {
! 38: char *d = dst;
! 39: const char *s = src;
! 40: size_t n = siz;
! 41: size_t dlen;
! 42:
! 43: /* Find the end of dst and adjust bytes left but don't go past end */
! 44: while (n-- != 0 && *d != '\0')
! 45: d++;
! 46: dlen = d - dst;
! 47: n = siz - dlen;
! 48:
! 49: if (n == 0)
! 50: return(dlen + strlen(s));
! 51: while (*s != '\0') {
! 52: if (n != 1) {
! 53: *d++ = *s;
! 54: n--;
! 55: }
! 56: s++;
! 57: }
! 58: *d = '\0';
! 59:
! 60: return(dlen + (s - src)); /* count does not include NUL */
! 61: }
! 62:
! 63: #endif
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