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Add wcsnlen(3).

This commit is contained in:
Jonas 'Sortie' Termansen 2014-05-28 21:00:37 +02:00
parent e4dd7c0d5a
commit 429f823f1f
3 changed files with 35 additions and 1 deletions
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1
libc/Makefile
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@ -260,6 +260,7 @@ wchar/wcsncasecmp.o \
wchar/wcsncat.o \
wchar/wcsncmp.o \
wchar/wcsncpy.o \
wchar/wcsnlen.o \
wchar/wcsnrtombs.o \
wchar/wcspbrk.o \
wchar/wcsrchr.o \

2
libc/include/wchar.h
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@ -205,7 +205,7 @@ int wcscasecmp(const wchar_t*, const wchar_t*);
wchar_t* wcsdup(const wchar_t*);
int wcsncasecmp(const wchar_t*, const wchar_t *, size_t);
/* TODO: int wcsncasecmp_l(const wchar_t*, const wchar_t *, size_t, locale_t); */
/* TODO: size_t wcsnlen(const wchar_t*, size_t); */
size_t wcsnlen(const wchar_t*, size_t);
size_t wcsnrtombs(char* __restrict, const wchar_t** __restrict, size_t, size_t, mbstate_t* __restrict);
/* TODO: size_t wcsxfrm_l(wchar_t* __restrict, const wchar_t* __restrict, size_t, locale_t); */
#endif

33
libc/wchar/wcsnlen.cpp Normal file
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@ -0,0 +1,33 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2014.
This file is part of the Sortix C Library.
The Sortix 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 3 of the License, or (at your
option) any later version.
The Sortix 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 Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
wchar/wcsnlen.cpp
Returns the length of a fixed length string.
*******************************************************************************/
#include <wchar.h>
extern "C" size_t wcsnlen(const wchar_t* str, size_t maxlen)
{
size_t ret = 0;
while ( ret < maxlen && str[ret] )
ret++;
return ret;
}