new openbsd inspired implementation of strlcat()

 * For strlcat() that means the initial length of dst plus the length of

 * src. While this may seem somewhat confusing it was done to make trunca-

 * tion detection simple.

 *

 * 

 */

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

{

  size_t len = strlen(dst);

  size_t orglen = len;

  int index=0;

  char *d = dst;

  const char *s = src;

  size_t n = siz;

  size_t dlen;

  while(src[index] && (len < (size-1)) ) {

    dst[len++] = src[index++];

  /* 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++;

  }

  dst[len]=0;

  *d = '\0';

  return orglen + strlen(src);

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

}

#endif