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sortix--sortix/libc/wcstok.cpp
Jonas 'Sortie' Termansen eb9e027697 Add wcstok(3).
2013-12-17 14:30:31 +01:00

43 lines
1.4 KiB
C++

/*******************************************************************************
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/>.
wcstok.cpp
Extract tokens from strings.
*******************************************************************************/
#include <wchar.h>
extern "C" wchar_t* wcstok(wchar_t* str, const wchar_t* delim, wchar_t** saveptr)
{
if ( !str && !*saveptr )
return NULL;
if ( !str )
str = *saveptr;
str += wcsspn(str, delim); // Skip leading
if ( !*str )
return *saveptr = NULL;
size_t amount = wcscspn(str, delim);
if ( str[amount] )
*saveptr = str + amount + 1;
else
*saveptr = NULL;
str[amount] = L'\0';
return str;
}