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b168057a | 1 | /* Copyright (C) 1995-2015 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 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
a482b5a5 | 18 | |
299a95b9 | 19 | #include <wchar.h> |
a482b5a5 RM |
20 | |
21 | ||
22 | /* Return the length of the maximum initial segment | |
23 | of WCS which contains only wide-characters in ACCEPT. */ | |
24 | size_t | |
25 | wcsspn (wcs, accept) | |
299a95b9 RM |
26 | const wchar_t *wcs; |
27 | const wchar_t *accept; | |
a482b5a5 | 28 | { |
2e09a79a JM |
29 | const wchar_t *p; |
30 | const wchar_t *a; | |
31 | size_t count = 0; | |
a482b5a5 RM |
32 | |
33 | for (p = wcs; *p != L'\0'; ++p) | |
34 | { | |
35 | for (a = accept; *a != L'\0'; ++a) | |
36 | if (*p == *a) | |
37 | break; | |
38 | if (*a == L'\0') | |
39 | return count; | |
40 | else | |
41 | ++count; | |
42 | } | |
43 | ||
44 | return count; | |
45 | } | |
8784cc18 | 46 | libc_hidden_def (wcsspn) |