+/* Split a wide string into tokens.
+ Copyright (C) 1999, 2011 Free Software Foundation, Inc.
+ Written by Bruno Haible <bruno@clisp.org>, 1999.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+wchar_t *
+wcstok (wchar_t *wcs, const wchar_t *delim, wchar_t **ptr)
+{
+ if (wcs == NULL)
+ {
+ wcs = *ptr;
+ if (wcs == NULL)
+ return NULL; /* reminder that end of token sequence has been reached */
+ }
+
+ /* Skip leading delimiters. */
+ wcs += wcsspn (wcs, delim);
+
+ /* Found a token? */
+ if (*wcs == (wchar_t)'\0')
+ {
+ *ptr = NULL;
+ return NULL;
+ }
+ /* Move past the token. */
+ {
+ wchar_t *token_end = wcspbrk (wcs, delim);
+ if (token_end)
+ {
+ /* NUL-terminate the token. */
+ *token_end = (wchar_t)'\0';
+ *ptr = token_end + 1;
+ }
+ else
+ *ptr = NULL;
+ }
+ return wcs;
+}