libite 2.6.1
strnlen.h
Go to the documentation of this file.
1/* strnlen.h - Re-implementation of GLIBC strnlen()
2 *
3 * Copyright (c) 2016-2021 Joachim Wiberg <troglobit@gmail.com>
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
24
25#ifdef __cplusplus
26extern "C"
27{
28#endif
29
30#ifndef LIBITE_STRNLEN_H_
31#define LIBITE_STRNLEN_H_
32
33#if !defined(HAVE_STRNLEN)
34#if defined(strnlen)
35#define HAVE_STRNLEN 1
36#endif
37#endif
38
39#if !HAVE_STRNLEN
40#include <stddef.h> /* size_t */
41
42#define strnlen(str, lim) xstrnlen(str, lim)
43
50static inline size_t xstrnlen(const char *str, size_t lim)
51{
52 size_t i = 0;
53
54 while (i < lim && str[i])
55 i++;
56
57 return i;
58}
59#endif
60
61#endif /* LIBITE_STRNLEN_H_ */
62
63#ifdef __cplusplus
64}
65#endif