Annotation of mandoc/compat_strlcpy.c, Revision 1.2
1.2 ! kristaps 1: #ifdef HAVE_CONFIG_H
! 2: #include "config.h"
! 3: #endif
! 4:
1.1 kristaps 5: #ifdef HAVE_STRLCPY
6:
7: int dummy;
8:
9: #else
10:
11: /* $OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $ */
12:
13: /*
14: * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
15: *
16: * Permission to use, copy, modify, and distribute this software for any
17: * purpose with or without fee is hereby granted, provided that the above
18: * copyright notice and this permission notice appear in all copies.
19: *
20: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
21: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
22: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
23: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
24: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
25: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
26: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
27: */
28:
29: #include <sys/types.h>
30: #include <string.h>
31:
32: /*
33: * Copy src to string dst of size siz. At most siz-1 characters
34: * will be copied. Always NUL terminates (unless siz == 0).
35: * Returns strlen(src); if retval >= siz, truncation occurred.
36: */
37: size_t
38: strlcpy(char *dst, const char *src, size_t siz)
39: {
40: char *d = dst;
41: const char *s = src;
42: size_t n = siz;
43:
44: /* Copy as many bytes as will fit */
45: if (n != 0) {
46: while (--n != 0) {
47: if ((*d++ = *s++) == '\0')
48: break;
49: }
50: }
51:
52: /* Not enough room in dst, add NUL and traverse rest of src */
53: if (n == 0) {
54: if (siz != 0)
55: *d = '\0'; /* NUL-terminate dst */
56: while (*s++)
57: ;
58: }
59:
60: return(s - src - 1); /* count does not include NUL */
61: }
62:
63: #endif
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