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/* strspn.c -- return numbers of chars at start of string in a class
Copyright (C) 1987, 1990 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. */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#if defined(HAVE_STRING_H)
#include <string.h>
#else
#include <strings.h>
#ifndef strchr
#define strchr index
#endif
#endif
int
strspn (str, class)
char *str, *class;
{
register char *st = str;
while (*st && strchr (class, *st))
++st;
return st - str;
}
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