tstrlcpy.h - wendy - watch files/directories and run commands on any event
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tstrlcpy.h (1565B)
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1 /*
2 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16 #include <sys/types.h>
17 #include <string.h>
18 /* Implementation of strlcpy() for platforms that don't already have it. */
19 /*
20 * Copy src to string dst of size siz. At most siz-1 characters
21 * will be copied. Always NUL terminates (unless siz == 0).
22 * Returns strlen(src); if retval >= siz, truncation occurred.
23 */
24 size_t
25 strlcpy(char *dst, const char *src, size_t siz)
26 {
27 char *d = dst;
28 const char *s = src;
29 size_t n = siz;
30 /* Copy as many bytes as will fit */
31 if (n != 0) {
32 while (--n != 0) {
33 if ((*d++ = *s++) == '\0')
34 break;
35 }
36 }
37 /* Not enough room in dst, add NUL and traverse rest of src */
38 if (n == 0) {
39 if (siz != 0)
40 *d = '\0'; /* NUL-terminate dst */
41 while (*s++)
42 ;
43 }
44 return(s - src - 1); /* count does not include NUL */
45 }