1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
/* Find the length of STRING, but scan at most MAXLEN characters.
Copyright (C) 1996, 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <string.h>
/* Find the length of S, but scan at most MAXLEN characters. If no
'\0' terminator is found in that many characters, return MAXLEN. */
size_t
__strnlen (const char *s, size_t maxlen)
{
size_t len = 0;
while (s[len] != '\0' && maxlen > 0)
{
if (s[++len] == '\0' || --maxlen == 0)
return len;
if (s[++len] == '\0' || --maxlen == 0)
return len;
if (s[++len] == '\0' || --maxlen == 0)
return len;
++len;
--maxlen;
}
return len;
}
weak_alias (__strnlen, strnlen)
|
