FreeNOS
strlcpy.cpp
Go to the documentation of this file.
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 
17 #include "string.h"
18 
19 size_t strlcpy(char *dst, const char *src, size_t siz)
20 {
21  char *d = dst;
22  const char *s = src;
23  size_t n = siz;
24 
25  // Copy as many bytes as will fit
26  if (n != 0) {
27  while (--n != 0) {
28  if ((*d++ = *s++) == '\0')
29  break;
30  }
31  }
32 
33  // Not enough room in dst, add NUL and traverse rest of src
34  if (n == 0) {
35  if (siz != 0)
36  *d = '\0'; // NUL-terminate dst
37  while (*s++)
38  ;
39  }
40 
41  // count does not include NUL
42  return(s - src - 1);
43 }
strlcpy
size_t strlcpy(char *dst, const char *src, size_t siz)
Copy src to string dst of size siz.
Definition: strlcpy.cpp:19
string.h