2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Christos Zoulas of Cornell University.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#)hist.h 8.1 (Berkeley) 6/4/93
37 * $DragonFly: src/lib/libedit/hist.h,v 1.3 2003/11/12 20:21:29 eirikn Exp $
41 * el.hist.c: History functions
48 typedef const HistEvent * (*hist_fun_t) (ptr_t, int, ...);
50 typedef struct el_history_t {
51 char *buf; /* The history buffer */
52 char *last; /* The last character */
53 int eventno; /* Event we are looking for */
54 ptr_t ref; /* Argument for history fcns */
55 hist_fun_t fun; /* Event access */
56 const HistEvent *ev; /* Event cookie */
59 #define HIST_FUN(el, fn, arg) \
60 ((((el)->el_history.ev = \
61 (*(el)->el_history.fun)((el)->el_history.ref, fn, arg)) == NULL) ? \
62 NULL : (el)->el_history.ev->str)
64 #define HIST_NEXT(el) HIST_FUN(el, H_NEXT, NULL)
65 #define HIST_FIRST(el) HIST_FUN(el, H_FIRST, NULL)
66 #define HIST_LAST(el) HIST_FUN(el, H_LAST, NULL)
67 #define HIST_PREV(el) HIST_FUN(el, H_PREV, NULL)
68 #define HIST_EVENT(el, num) HIST_FUN(el, H_EVENT, num)
69 #define HIST_LOAD(el, fname) HIST_FUN(el, H_LOAD fname)
70 #define HIST_SAVE(el, fname) HIST_FUN(el, H_SAVE fname)
72 protected int hist_init (EditLine *);
73 protected void hist_end (EditLine *);
74 protected el_action_t hist_get (EditLine *);
75 protected int hist_set (EditLine *, hist_fun_t, ptr_t);
76 protected int hist_list (EditLine *, int, char **);
78 #endif /* _h_el_hist */