1198090Srdivacky/* 2198090Srdivacky * This code is derived from OpenBSD's libc, original license follows: 3198090Srdivacky * 4198090Srdivacky * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> 5198090Srdivacky * 6198090Srdivacky * Permission to use, copy, modify, and distribute this software for any 7198090Srdivacky * purpose with or without fee is hereby granted, provided that the above 8198090Srdivacky * copyright notice and this permission notice appear in all copies. 9198090Srdivacky * 10198090Srdivacky * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11198090Srdivacky * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12198090Srdivacky * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13198090Srdivacky * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14198090Srdivacky * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15198090Srdivacky * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16198090Srdivacky * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17198090Srdivacky */ 18198090Srdivacky 19198090Srdivacky#include <sys/types.h> 20198090Srdivacky#include <string.h> 21198090Srdivacky 22198090Srdivacky#include "regex_impl.h" 23198090Srdivacky/* 24198090Srdivacky * Copy src to string dst of size siz. At most siz-1 characters 25198090Srdivacky * will be copied. Always NUL terminates (unless siz == 0). 26198090Srdivacky * Returns strlen(src); if retval >= siz, truncation occurred. 27198090Srdivacky */ 28198090Srdivackysize_t 29198090Srdivackyllvm_strlcpy(char *dst, const char *src, size_t siz) 30198090Srdivacky{ 31198090Srdivacky char *d = dst; 32198090Srdivacky const char *s = src; 33198090Srdivacky size_t n = siz; 34198090Srdivacky 35198090Srdivacky /* Copy as many bytes as will fit */ 36198090Srdivacky if (n != 0) { 37198090Srdivacky while (--n != 0) { 38198090Srdivacky if ((*d++ = *s++) == '\0') 39198090Srdivacky break; 40198090Srdivacky } 41198090Srdivacky } 42198090Srdivacky 43198090Srdivacky /* Not enough room in dst, add NUL and traverse rest of src */ 44198090Srdivacky if (n == 0) { 45198090Srdivacky if (siz != 0) 46198090Srdivacky *d = '\0'; /* NUL-terminate dst */ 47198090Srdivacky while (*s++) 48198090Srdivacky ; 49198090Srdivacky } 50198090Srdivacky 51198090Srdivacky return(s - src - 1); /* count does not include NUL */ 52198090Srdivacky} 53