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6d7e8eda | 1 | /* Copyright (C) 1995-2023 Free Software Foundation, Inc. |
33a934a3 | 2 | This file is part of the GNU C Library. |
33a934a3 UD |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
33a934a3 UD |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
33a934a3 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
a482b5a5 | 17 | |
299a95b9 | 18 | #include <wchar.h> |
a482b5a5 | 19 | |
b4c21601 SL |
20 | #ifdef WCSCSPN |
21 | # define wcscspn WCSCSPN | |
22 | #endif | |
a482b5a5 RM |
23 | |
24 | /* Return the length of the maximum initial segment | |
25 | of WCS which contains only wide-characters not in REJECT. */ | |
26 | size_t | |
9d46370c | 27 | wcscspn (const wchar_t *wcs, const wchar_t *reject) |
a482b5a5 | 28 | { |
2e09a79a | 29 | size_t count = 0; |
a482b5a5 RM |
30 | |
31 | while (*wcs != L'\0') | |
32 | if (wcschr (reject, *wcs++) == NULL) | |
33 | ++count; | |
34 | else | |
35 | return count; | |
36 | ||
37 | return count; | |
38 | } |