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04277e02 | 1 | /* Copyright (C) 1995-2019 Free Software Foundation, Inc. |
33a934a3 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
33a934a3 UD |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
33a934a3 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
a482b5a5 | 18 | |
299a95b9 | 19 | #include <wchar.h> |
a482b5a5 | 20 | |
f1ffad98 SL |
21 | #ifdef WCSSPN |
22 | # define wcsspn WCSSPN | |
23 | #endif | |
a482b5a5 RM |
24 | |
25 | /* Return the length of the maximum initial segment | |
26 | of WCS which contains only wide-characters in ACCEPT. */ | |
27 | size_t | |
9d46370c | 28 | wcsspn (const wchar_t *wcs, const wchar_t *accept) |
a482b5a5 | 29 | { |
2e09a79a JM |
30 | const wchar_t *p; |
31 | const wchar_t *a; | |
32 | size_t count = 0; | |
a482b5a5 RM |
33 | |
34 | for (p = wcs; *p != L'\0'; ++p) | |
35 | { | |
36 | for (a = accept; *a != L'\0'; ++a) | |
37 | if (*p == *a) | |
38 | break; | |
39 | if (*a == L'\0') | |
40 | return count; | |
41 | else | |
42 | ++count; | |
43 | } | |
44 | ||
45 | return count; | |
46 | } | |
8784cc18 | 47 | libc_hidden_def (wcsspn) |