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Add wcsspn(3).

This commit is contained in:
Jonas 'Sortie' Termansen 2013-03-24 00:52:40 +01:00
parent 1902f2d797
commit 1938db2c25
3 changed files with 46 additions and 1 deletions
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1
libc/Makefile
View File

@ -139,6 +139,7 @@ wcslen.o \
wcsncat.o \
wcsncpy.o \
wcsrchr.o \
wcsspn.o \
wctomb.o \
wctype.o \

2
libc/include/wchar.h
View File

@ -72,6 +72,7 @@ size_t wcslen(const wchar_t*);
wchar_t* wcsncat(wchar_t* restrict, const wchar_t* restrict, size_t);
wchar_t* wcsncpy(wchar_t* restrict, const wchar_t* restrict, size_t);
wchar_t* wcsrchr(const wchar_t*, wchar_t);
size_t wcsspn(const wchar_t*, const wchar_t*);
/* TODO: These are not implemented in sortix libc yet. */
#if defined(__SORTIX_SHOW_UNIMPLEMENTED)
@ -107,7 +108,6 @@ size_t mbsrtowcs(wchar_t* restrict, const char** restrict, size_t, mbstate_t* re
size_t wcscspn(const wchar_t*, const wchar_t*);
size_t wcsftime(wchar_t* restrict, size_t, const wchar_t* restrict, const struct tm* restrict);
size_t wcsrtombs(char* restrict, const wchar_t** restrict, size_t, mbstate_t* restrict);
size_t wcsspn(const wchar_t*, const wchar_t*);
size_t wcsxfrm(wchar_t* restrict, const wchar_t* restrict, size_t);
unsigned long long wcstoull(const wchar_t* restrict, wchar_t** restrict, int);
unsigned long wcstoul(const wchar_t* restrict, wchar_t** restrict, int);

44
libc/wcsspn.cpp Normal file
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@ -0,0 +1,44 @@
/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011, 2012, 2013.
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/>.
wcsspn.cpp
Search a string for a set of characters.
*******************************************************************************/
#include <wchar.h>
extern "C" size_t wcsspn(const wchar_t* str, const wchar_t* accept)
{
size_t acceptlen = 0;
while ( accept[acceptlen] ) { acceptlen++; }
for ( size_t result = 0; true; result++ )
{
wchar_t c = str[result];
if ( !c ) { return result; }
bool matches = false;
for ( size_t i = 0; i < acceptlen; i++ )
{
if ( str[result] != accept[i] ) { continue; }
matches = true;
break;
}
if ( !matches ) { return result; }
}
}