/*
 * Copyright (C) 1991 Free Software Foundation, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 
 *
 * $Id: strcspn.c,v 1.1 1995/03/14 12:21:41 tom Exp $ 
 * $Log: strcspn.c,v $
 * Revision 1.1  1995/03/14  12:21:41  tom
 * Initial revision
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#ifdef HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#ifndef strchr
#define strchr index
#endif
#endif

/*
 * Return the length of the maximum inital segment of S
 * which contains no characters from REJECT.
 */

int
strcspn (s, reject)
  register char *s;
  register char *reject;
{
  register int count = 0;

  while (*s != '\0')
    if (strchr (reject, *s++) == 0)
      ++count;
    else
      return count;

  return count;
}