wcsmbs/wcscspn.c

   1 /* Copyright (C) 1995 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   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
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #include <wcstr.h>
  20
  21
  22 /* Return the length of the maximum initial segment
  23    of WCS which contains only wide-characters not in REJECT.  */
  24 size_t
  25 wcscspn (wcs, reject)
  26     const wchar_t *wcs;
  27     const wchar_t *reject;
  28 {
  29   register size_t count = 0;
  30
  31   while (*wcs != L'\0')
  32     if (wcschr (reject, *wcs++) == NULL)
  33       ++count;
  34     else
  35       return count;
  36
  37   return count;
  38 }