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/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <wchar.h>
#include <errno.h>
/* Parse WCS into tokens separated by characters in DELIM. If WCS is
NULL, the last string wcstok() was called with is used. */
wchar_t *
wcstok (wcs, delim, save_ptr)
wchar_t *wcs;
const wchar_t *delim;
wchar_t **save_ptr;
{
wchar_t *result;
if (wcs == NULL)
{
if (*save_ptr == NULL)
{
__set_errno (EINVAL);
return NULL;
}
else
wcs = *save_ptr;
}
/* Scan leading delimiters. */
wcs += wcsspn (wcs, delim);
if (*wcs == L'\0')
{
*save_ptr = NULL;
return NULL;
}
/* Find the end of the token. */
result = wcs;
wcs = wcspbrk (result, delim);
if (wcs == NULL)
/* This token finishes the string. */
*save_ptr = NULL;
else
{
/* Terminate the token and make *SAVE_PTR point past it. */
*wcs = L'\0';
*save_ptr = wcs + 1;
}
return result;
}
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