1*e14d4cdbSTorok Edwin /*
2*e14d4cdbSTorok Edwin * This code is derived from OpenBSD's libc, original license follows:
3*e14d4cdbSTorok Edwin *
4*e14d4cdbSTorok Edwin * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
5*e14d4cdbSTorok Edwin *
6*e14d4cdbSTorok Edwin * Permission to use, copy, modify, and distribute this software for any
7*e14d4cdbSTorok Edwin * purpose with or without fee is hereby granted, provided that the above
8*e14d4cdbSTorok Edwin * copyright notice and this permission notice appear in all copies.
9*e14d4cdbSTorok Edwin *
10*e14d4cdbSTorok Edwin * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11*e14d4cdbSTorok Edwin * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12*e14d4cdbSTorok Edwin * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13*e14d4cdbSTorok Edwin * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14*e14d4cdbSTorok Edwin * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15*e14d4cdbSTorok Edwin * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16*e14d4cdbSTorok Edwin * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17*e14d4cdbSTorok Edwin */
18*e14d4cdbSTorok Edwin
19*e14d4cdbSTorok Edwin #include <sys/types.h>
20*e14d4cdbSTorok Edwin #include <string.h>
21*e14d4cdbSTorok Edwin
22*e14d4cdbSTorok Edwin #include "regex_impl.h"
23*e14d4cdbSTorok Edwin /*
24*e14d4cdbSTorok Edwin * Copy src to string dst of size siz. At most siz-1 characters
25*e14d4cdbSTorok Edwin * will be copied. Always NUL terminates (unless siz == 0).
26*e14d4cdbSTorok Edwin * Returns strlen(src); if retval >= siz, truncation occurred.
27*e14d4cdbSTorok Edwin */
28*e14d4cdbSTorok Edwin size_t
llvm_strlcpy(char * dst,const char * src,size_t siz)29*e14d4cdbSTorok Edwin llvm_strlcpy(char *dst, const char *src, size_t siz)
30*e14d4cdbSTorok Edwin {
31*e14d4cdbSTorok Edwin char *d = dst;
32*e14d4cdbSTorok Edwin const char *s = src;
33*e14d4cdbSTorok Edwin size_t n = siz;
34*e14d4cdbSTorok Edwin
35*e14d4cdbSTorok Edwin /* Copy as many bytes as will fit */
36*e14d4cdbSTorok Edwin if (n != 0) {
37*e14d4cdbSTorok Edwin while (--n != 0) {
38*e14d4cdbSTorok Edwin if ((*d++ = *s++) == '\0')
39*e14d4cdbSTorok Edwin break;
40*e14d4cdbSTorok Edwin }
41*e14d4cdbSTorok Edwin }
42*e14d4cdbSTorok Edwin
43*e14d4cdbSTorok Edwin /* Not enough room in dst, add NUL and traverse rest of src */
44*e14d4cdbSTorok Edwin if (n == 0) {
45*e14d4cdbSTorok Edwin if (siz != 0)
46*e14d4cdbSTorok Edwin *d = '\0'; /* NUL-terminate dst */
47*e14d4cdbSTorok Edwin while (*s++)
48*e14d4cdbSTorok Edwin ;
49*e14d4cdbSTorok Edwin }
50*e14d4cdbSTorok Edwin
51*e14d4cdbSTorok Edwin return(s - src - 1); /* count does not include NUL */
52*e14d4cdbSTorok Edwin }
53