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/* Copyright (C) 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <wcstr.h>
#include <errno.h>
static wchar_t *olds = NULL;
/* 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)
register wchar_t *wcs;
register const wchar_t *delim;
{
wchar_t *token;
if (wcs == NULL)
{
if (olds == NULL)
{
errno = EINVAL;
return NULL;
}
else
wcs = olds;
}
/* Scan leading delimiters. */
wcs += wcsspn (wcs, delim);
if (*wcs == L'\0')
{
olds = NULL;
return NULL;
}
/* Find the end of the token. */
token = wcs;
wcs = wcspbrk (token, delim);
if (wcs == NULL)
/* This token finishes the string. */
olds = NULL;
else
{
/* Terminate the token and make OLDS point past it. */
*wcs = L'\0';
olds = wcs + 1;
}
return token;
}
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