0,0 → 1,75 |
/* |
FUNCTION |
<<wcsnlen>>---get fixed-size wide-character string length |
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INDEX |
wcsnlen |
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ANSI_SYNOPSIS |
#include <wchar.h> |
size_t wcsnlen(const wchar_t *<[s]>, size_t <[maxlen]>); |
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TRAD_SYNOPSIS |
#include <wchar.h> |
size_t wcsnlen(<[s]>, <[maxlen]>) |
wchar_t *<[s]>; |
size_t <[maxlen]>; |
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DESCRIPTION |
The <<wcsnlen>> function computes the number of wide-character codes |
in the wide-character string pointed to by <[s]> not including the |
terminating L'\0' wide character but at most <[maxlen]> wide |
characters. |
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RETURNS |
<<wcsnlen>> returns the length of <[s]> if it is less then <[maxlen]>, |
or <[maxlen]> if there is no L'\0' wide character in first <[maxlen]> |
characters. |
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PORTABILITY |
<<wcsnlen>> is a GNU extension. |
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<<wcsnlen>> requires no supporting OS subroutines. |
*/ |
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/* |
* Copyright (c) 2003, Artem B. Bityuckiy (dedekind@mail.ru). |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the above copyright notice, |
* this condition statement, and the following disclaimer are retained |
* in any redistributions of the source code. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
* SUCH DAMAGE. |
*/ |
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#include <_ansi.h> |
#include <sys/types.h> |
#include <wchar.h> |
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size_t |
_DEFUN(wcsnlen, (s, maxlen), |
_CONST wchar_t *s _AND |
size_t maxlen) |
{ |
_CONST wchar_t *p; |
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p = s; |
while (*p && maxlen-- > 0) |
p++; |
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return (size_t)(p - s); |
} |
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