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/* $NetBSD: hist.h,v 1.6 2001/01/10 07:45:41 jdolecek Exp $ */
/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Christos Zoulas of Cornell University.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)hist.h 8.1 (Berkeley) 6/4/93
*/
/*
* el.hist.c: History functions
*/
#ifndef _h_el_hist
#define _h_el_hist
#include "histedit.h"
typedef int (*hist_fun_t)(ptr_t, HistEvent *, int, ...);
typedef struct el_history_t {
char *buf; /* The history buffer */
size_t sz; /* Size of history buffer */
char *last; /* The last character */
int eventno; /* Event we are looking for */
ptr_t ref; /* Argument for history fcns */
hist_fun_t fun; /* Event access */
HistEvent ev; /* Event cookie */
} el_history_t;
#define HIST_FUN(el, fn, arg) \
((((*(el)->el_history.fun) ((el)->el_history.ref, &(el)->el_history.ev, \
fn, arg)) == -1) ? NULL : (el)->el_history.ev.str)
#define HIST_NEXT(el) HIST_FUN(el, H_NEXT, NULL)
#define HIST_FIRST(el) HIST_FUN(el, H_FIRST, NULL)
#define HIST_LAST(el) HIST_FUN(el, H_LAST, NULL)
#define HIST_PREV(el) HIST_FUN(el, H_PREV, NULL)
#define HIST_EVENT(el, num) HIST_FUN(el, H_EVENT, num)
#define HIST_LOAD(el, fname) HIST_FUN(el, H_LOAD fname)
#define HIST_SAVE(el, fname) HIST_FUN(el, H_SAVE fname)
protected int hist_init(EditLine *);
protected void hist_end(EditLine *);
protected el_action_t hist_get(EditLine *);
protected int hist_set(EditLine *, hist_fun_t, ptr_t);
protected int hist_list(EditLine *, int, const char **);
protected int hist_enlargebuf(EditLine *, size_t, size_t);
#endif /* _h_el_hist */
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