/* from http://www.openbsd.org/cgi-bin/cvsweb/src/lib/libc/string/ */

/*

* Copyright (c) 1998 Todd C. Miller <[email protected]>

*

* Permission to use, copy, modify, and distribute this software for any

* purpose with or without fee is hereby granted, provided that the above

* copyright notice and this permission notice appear in all copies.

*

* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

*/

#include <sys/types.h>

#include <string.h>

/*

* Appends src to string dst of size siz (unlike strncat, siz is the

* full size of dst, not space left). At most siz-1 characters

* will be copied. Always NUL terminates (unless siz <= strlen(dst)).

* Returns strlen(src) + MIN(siz, strlen(initial dst)).

* If retval >= siz, truncation occurred.

*/

size_t

strlcat(char *dst, const char *src, size_t siz)

{

char *d = dst;

const char *s = src;

size_t n = siz;

size_t dlen;

/* Find the end of dst and adjust bytes left but don't go past end */

while (n-- != 0 && *d != '\0')

d++;

dlen = d - dst;

n = siz - dlen;

if (n == 0)

return(dlen + strlen(s));

while (*s != '\0') {

if (n != 1) {

*d++ = *s;

n--;

}

s++;

}

*d = '\0';

return(dlen + (s - src)); /* count does not include NUL */

}