1/*	$OpenBSD: extern.h,v 1.6 2003/06/03 02:56:20 millert Exp $	*/
2/*	$NetBSD: extern.h,v 1.4 1995/11/01 00:45:22 pk Exp $	*/
3
4/*-
5 * Copyright (c) 1991, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 *	@(#)extern.h	8.1 (Berkeley) 6/6/93
33 */
34
35typedef struct {
36	enum { STRING1, STRING2 } which;
37	enum { EOS, INFINITE, NORMAL, RANGE, SEQUENCE, SET } state;
38	int	 cnt;			/* character count */
39	int	 lastch;		/* last character */
40	int	equiv[2];		/* equivalence set */
41	int	*set;			/* set of characters */
42	unsigned char	*str;		/* user's string */
43} STR;
44
45#include <limits.h>
46#define	NCHARS	(UCHAR_MAX + 1)		/* Number of possible characters. */
47#define	OOBCH	(UCHAR_MAX + 1)		/* Out of band character value. */
48
49int	 next(STR *);
50