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68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/* Copyright (C) 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <wcstr.h>
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#include <errno.h>
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static wchar_t *olds = NULL;
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/* Parse WCS into tokens separated by characters in DELIM.
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If WCS is NULL, the last string wcstok() was called with is
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used. */
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wchar_t *
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wcstok (wcs, delim)
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register wchar_t *wcs;
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register const wchar_t *delim;
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{
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wchar_t *token;
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if (wcs == NULL)
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{
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if (olds == NULL)
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{
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errno = EINVAL;
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return NULL;
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}
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else
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wcs = olds;
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}
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/* Scan leading delimiters. */
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wcs += wcsspn (wcs, delim);
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if (*wcs == L'\0')
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{
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olds = NULL;
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return NULL;
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}
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/* Find the end of the token. */
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token = wcs;
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wcs = wcspbrk (token, delim);
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if (wcs == NULL)
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/* This token finishes the string. */
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olds = NULL;
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else
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{
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/* Terminate the token and make OLDS point past it. */
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*wcs = L'\0';
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olds = wcs + 1;
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}
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return token;
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}
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