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glibc  2.9
wcscspn.c
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00001 /* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <wchar.h>
00021 
00022 
00023 /* Return the length of the maximum initial segment
00024    of WCS which contains only wide-characters not in REJECT.  */
00025 size_t
00026 wcscspn (wcs, reject)
00027      const wchar_t *wcs;
00028      const wchar_t *reject;
00029 {
00030   register size_t count = 0;
00031 
00032   while (*wcs != L'\0')
00033     if (wcschr (reject, *wcs++) == NULL)
00034       ++count;
00035     else
00036       return count;
00037 
00038   return count;
00039 }