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1 | /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. |
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 | |
6 | modify it under the terms of the GNU Library General Public License as | |
7 | published by the Free Software Foundation; either version 2 of the | |
8 | License, or (at your option) any later version. | |
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 | |
13 | Library General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Library General Public | |
16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
a482b5a5 | 19 | |
299a95b9 | 20 | #include <wchar.h> |
a482b5a5 RM |
21 | |
22 | ||
23 | /* Return the length of the maximum initial segment | |
24 | of WCS which contains only wide-characters in ACCEPT. */ | |
25 | size_t | |
26 | wcsspn (wcs, accept) | |
299a95b9 RM |
27 | const wchar_t *wcs; |
28 | const wchar_t *accept; | |
a482b5a5 RM |
29 | { |
30 | register const wchar_t *p; | |
31 | register const wchar_t *a; | |
32 | register size_t count = 0; | |
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 | } |