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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. */
-
- #if defined(HAVE_STRING_H)
- #include <string.h>
- #define index strchr
- #else
- #include <strings.h>
- #endif
-
- int
- strspn (str, class)
- char *str, *class;
- {
- register char *st = str;
-
- while (*st && index (class, *st))
- ++st;
- return st - str;
- }
-