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1/*2 * This code is derived from OpenBSD's libc, original license follows:3 *4 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>5 *6 * Permission to use, copy, modify, and distribute this software for any7 * purpose with or without fee is hereby granted, provided that the above8 * copyright notice and this permission notice appear in all copies.9 *10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.17 */18 19#include <sys/types.h>20#include <string.h>21 22#include "regex_impl.h"23/*24 * Copy src to string dst of size siz. At most siz-1 characters25 * will be copied. Always NUL terminates (unless siz == 0).26 * Returns strlen(src); if retval >= siz, truncation occurred.27 */28size_t29llvm_strlcpy(char *dst, const char *src, size_t siz)30{31 char *d = dst;32 const char *s = src;33 size_t n = siz;34 35 /* Copy as many bytes as will fit */36 if (n != 0) {37 while (--n != 0) {38 if ((*d++ = *s++) == '\0')39 break;40 }41 }42 43 /* Not enough room in dst, add NUL and traverse rest of src */44 if (n == 0) {45 if (siz != 0)46 *d = '\0'; /* NUL-terminate dst */47 while (*s++)48 ;49 }50 51 return(s - src - 1); /* count does not include NUL */52}53