Annotation of mandoc/compat_strlcpy.c, Revision 1.4
1.2 kristaps 1: #include "config.h"
2:
1.4 ! schwarze 3: #if HAVE_STRLCPY
1.1 kristaps 4:
5: int dummy;
6:
7: #else
8:
9: /* $OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $ */
10:
11: /*
12: * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
13: *
14: * Permission to use, copy, modify, and distribute this software for any
15: * purpose with or without fee is hereby granted, provided that the above
16: * copyright notice and this permission notice appear in all copies.
17: *
18: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
19: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
20: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
21: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
22: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
23: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
24: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
25: */
26:
27: #include <sys/types.h>
28: #include <string.h>
29:
30: /*
31: * Copy src to string dst of size siz. At most siz-1 characters
32: * will be copied. Always NUL terminates (unless siz == 0).
33: * Returns strlen(src); if retval >= siz, truncation occurred.
34: */
35: size_t
36: strlcpy(char *dst, const char *src, size_t siz)
37: {
38: char *d = dst;
39: const char *s = src;
40: size_t n = siz;
41:
42: /* Copy as many bytes as will fit */
43: if (n != 0) {
44: while (--n != 0) {
45: if ((*d++ = *s++) == '\0')
46: break;
47: }
48: }
49:
50: /* Not enough room in dst, add NUL and traverse rest of src */
51: if (n == 0) {
52: if (siz != 0)
53: *d = '\0'; /* NUL-terminate dst */
54: while (*s++)
55: ;
56: }
57:
58: return(s - src - 1); /* count does not include NUL */
59: }
60:
61: #endif
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