1 /* Copyright (C) 1991, 1994, 1996-1997, 2002-2003, 2005-2006 Free Software Foundation, Inc.
   2 
   3    NOTE: The canonical source of this file is maintained with the GNU C Library.
   4    Bugs can be reported to bug-glibc@gnu.org.
   5 
   6    This program is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published by the
   8    Free Software Foundation; either version 2, or (at your option) any
   9    later version.
  10 
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15 
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software Foundation,
  18    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  19 
  20 #include <config.h>
  21 
  22 #include <stddef.h>
  23 #include <string.h>
  24 
  25 #undef strcspn
  26 
  27 /* Return the length of the maximum initial segment of S
  28    which contains no characters from REJECT.  */
  29 size_t
  30 strcspn (const char *s, const char *reject)
  31 {
  32   size_t count = 0;
  33 
  34   while (*s != '\0')
  35     if (strchr (reject, *s++) == NULL)
  36       ++count;
  37     else
  38       return count;
  39 
  40   return count;
  41 }