hist.h revision 296435 
1/*	$NetBSD: hist.h,v 1.15 2016/01/30 15:05:27 christos Exp $	*/
2
3/*-
4 * Copyright (c) 1992, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Christos Zoulas of Cornell University.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 *	@(#)hist.h	8.1 (Berkeley) 6/4/93
35 * $FreeBSD: head/lib/libedit/hist.h 296435 2016-03-06 21:32:54Z pfg $
36 */
37
38/*
39 * el.hist.c: History functions
40 */
41#ifndef _h_el_hist
42#define	_h_el_hist
43
44#include "histedit.h"
45
46typedef int (*hist_fun_t)(void *, TYPE(HistEvent) *, int, ...);
47
48typedef struct el_history_t {
49	Char		*buf;		/* The history buffer		*/
50	size_t		 sz;		/* Size of history buffer	*/
51	Char		*last;		/* The last character		*/
52	int		 eventno;	/* Event we are looking for	*/
53	void		*ref;		/* Argument for history fcns	*/
54	hist_fun_t	 fun;		/* Event access			*/
55	TYPE(HistEvent)	 ev;		/* Event cookie			*/
56} el_history_t;
57
58#define	HIST_FUN_INTERNAL(el, fn, arg)	\
59    ((((*(el)->el_history.fun) ((el)->el_history.ref, &(el)->el_history.ev, \
60	fn, arg)) == -1) ? NULL : (el)->el_history.ev.str)
61#ifdef WIDECHAR
62#define HIST_FUN(el, fn, arg) \
63    (((el)->el_flags & NARROW_HISTORY) ? hist_convert(el, fn, arg) : \
64	HIST_FUN_INTERNAL(el, fn, arg))
65#else
66#define HIST_FUN(el, fn, arg) HIST_FUN_INTERNAL(el, fn, arg)
67#endif
68
69
70#define	HIST_NEXT(el)		HIST_FUN(el, H_NEXT, NULL)
71#define	HIST_FIRST(el)		HIST_FUN(el, H_FIRST, NULL)
72#define	HIST_LAST(el)		HIST_FUN(el, H_LAST, NULL)
73#define	HIST_PREV(el)		HIST_FUN(el, H_PREV, NULL)
74#define	HIST_SET(el, num)	HIST_FUN(el, H_SET, num)
75#define	HIST_LOAD(el, fname)	HIST_FUN(el, H_LOAD fname)
76#define	HIST_SAVE(el, fname)	HIST_FUN(el, H_SAVE fname)
77#define	HIST_SAVE_FP(el, fp)	HIST_FUN(el, H_SAVE_FP fp)
78
79protected int		hist_init(EditLine *);
80protected void		hist_end(EditLine *);
81protected el_action_t	hist_get(EditLine *);
82protected int		hist_set(EditLine *, hist_fun_t, void *);
83protected int		hist_command(EditLine *, int, const Char **);
84protected int		hist_enlargebuf(EditLine *, size_t, size_t);
85#ifdef WIDECHAR
86protected wchar_t 	*hist_convert(EditLine *, int, void *);
87#endif
88
89#endif /* _h_el_hist */
90