1/*-
2 * Copyright (c) 1992, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Christos Zoulas of Cornell University.
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 *	@(#)hist.h	8.1 (Berkeley) 6/4/93
33 *	$NetBSD: hist.h,v 1.10 2003/08/07 16:44:31 agc Exp $
34 * $FreeBSD$
35 */
36
37/*
38 * el.hist.c: History functions
39 */
40#ifndef _h_el_hist
41#define	_h_el_hist
42
43#include "histedit.h"
44
45typedef int (*hist_fun_t)(ptr_t, HistEvent *, int, ...);
46
47typedef struct el_history_t {
48	char		*buf;		/* The history buffer		*/
49	size_t		sz;		/* Size of history buffer	*/
50	char		*last;		/* The last character		*/
51	int		 eventno;	/* Event we are looking for	*/
52	ptr_t		 ref;		/* Argument for history fcns	*/
53	hist_fun_t	 fun;		/* Event access			*/
54	HistEvent	 ev;		/* Event cookie			*/
55} el_history_t;
56
57#define	HIST_FUN(el, fn, arg)	\
58    ((((*(el)->el_history.fun) ((el)->el_history.ref, &(el)->el_history.ev, \
59	fn, arg)) == -1) ? NULL : (el)->el_history.ev.str)
60
61#define	HIST_NEXT(el)		HIST_FUN(el, H_NEXT, NULL)
62#define	HIST_FIRST(el)		HIST_FUN(el, H_FIRST, NULL)
63#define	HIST_LAST(el)		HIST_FUN(el, H_LAST, NULL)
64#define	HIST_PREV(el)		HIST_FUN(el, H_PREV, NULL)
65#define	HIST_SET(el, num)	HIST_FUN(el, H_SET, num)
66#define	HIST_LOAD(el, fname)	HIST_FUN(el, H_LOAD fname)
67#define	HIST_SAVE(el, fname)	HIST_FUN(el, H_SAVE fname)
68
69protected int		hist_init(EditLine *);
70protected void		hist_end(EditLine *);
71protected el_action_t	hist_get(EditLine *);
72protected int		hist_set(EditLine *, hist_fun_t, ptr_t);
73protected int		hist_command(EditLine *, int, const char **);
74protected int		hist_enlargebuf(EditLine *, size_t, size_t);
75
76#endif /* _h_el_hist */
77