| /* Search a wide string for any of a set of wide characters. |
| 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 * |
| wcspbrk (const wchar_t *wcs, const wchar_t *accept) |
| { |
| /* Optimize two cases. */ |
| if (accept[0] == (wchar_t)'\0') |
| return NULL; |
| |
| if (accept[1] == (wchar_t)'\0') |
| { |
| wchar_t wc = accept[0]; |
| const wchar_t *ptr = wcs; |
| for (; *ptr != (wchar_t)'\0'; ptr++) |
| { |
| if (*ptr == wc) |
| return (wchar_t *) ptr; |
| } |
| return NULL; |
| } |
| |
| /* General case. */ |
| { |
| const wchar_t *ptr = wcs; |
| for (; *ptr != (wchar_t)'\0'; ptr++) |
| { |
| if (wcschr (accept, *ptr)) |
| return (wchar_t *) ptr; |
| } |
| return NULL; |
| } |
| } |