mirror of
https://github.com/troglobit/libite.git
synced 2026-10-13 10:14:42 +00:00
Joachim Wiberg
407b8f6dbf
The tree.h and queue.h include guards must remain so users don't accidentally get their system queue.h included as well. Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/* strnlen.h - Re-implementation of GLIBC strnlen()
|
|
*
|
|
* Copyright (c) 2016-2021 Joachim Wiberg <troglobit@gmail.com>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
/**
|
|
* @file strnlen.h
|
|
* @author Joachim Wiberg
|
|
* @date 2016-2021
|
|
* @copyright ISC License
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C"
|
|
{
|
|
#endif
|
|
|
|
#ifndef LIBITE_STRNLEN_H_
|
|
#define LIBITE_STRNLEN_H_
|
|
|
|
#if !defined(HAVE_STRNLEN)
|
|
#if defined(strnlen)
|
|
#define HAVE_STRNLEN 1
|
|
#endif
|
|
#endif
|
|
|
|
#if !HAVE_STRNLEN
|
|
#include <stddef.h> /* size_t */
|
|
|
|
#define strnlen(str, lim) xstrnlen(str, lim) /**< Wrapper for xstrnlen() */
|
|
|
|
/**
|
|
* Reimplementation of GLIBC strnlen()
|
|
* @param str string to return length of
|
|
* @param lim max number of bytes to read
|
|
* @returns length of @p str in bytes, but at most @lim bytes.
|
|
*/
|
|
static inline size_t xstrnlen(const char *str, size_t lim)
|
|
{
|
|
size_t i = 0;
|
|
|
|
while (i < lim && str[i])
|
|
i++;
|
|
|
|
return i;
|
|
}
|
|
#endif
|
|
|
|
#endif /* LIBITE_STRNLEN_H_ */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|