| /* Split a wide string into tokens. |
| Copyright (C) 1999, 2011-2020 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 <https://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; |
| } |