| ␉}␊ |
| ␉return sum;␊ |
| }␊ |
| /*␊ |
| * 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 */␊ |
| }␊ |
| ␊ |
| char *strncat(char *s1, const char *s2, size_t n)␊ |
| {␊ |
| ␉register char *ret = s1;␊ |
