root/src/noitedit/hist.h

Revision bafab25395cb398ddf5eae42145f0d0bfc00ec22, 3.3 kB (checked in by Theo Schlossnagle <jesus@omniti.com>, 6 years ago)

import of libedit... prepare to hack

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1 /*      $NetBSD: hist.h,v 1.6 2001/01/10 07:45:41 jdolecek 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. All advertising materials mentioning features or use of this software
19  *    must display the following acknowledgement:
20  *      This product includes software developed by the University of
21  *      California, Berkeley and its contributors.
22  * 4. Neither the name of the University nor the names of its contributors
23  *    may be used to endorse or promote products derived from this software
24  *    without specific prior written permission.
25  *
26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36  * SUCH DAMAGE.
37  *
38  *      @(#)hist.h      8.1 (Berkeley) 6/4/93
39  */
40
41 /*
42  * el.hist.c: History functions
43  */
44 #ifndef _h_el_hist
45 #define _h_el_hist
46
47 #include "histedit.h"
48
49 typedef int (*hist_fun_t)(ptr_t, HistEvent *, int, ...);
50
51 typedef struct el_history_t {
52         char            *buf;           /* The history buffer           */
53         size_t          sz;             /* Size of history buffer       */
54         char            *last;          /* The last character           */
55         int              eventno;       /* Event we are looking for     */
56         ptr_t            ref;           /* Argument for history fcns    */
57         hist_fun_t       fun;           /* Event access                 */
58         HistEvent        ev;            /* Event cookie                 */
59 } el_history_t;
60
61 #define HIST_FUN(el, fn, arg)   \
62     ((((*(el)->el_history.fun) ((el)->el_history.ref, &(el)->el_history.ev, \
63         fn, arg)) == -1) ? NULL : (el)->el_history.ev.str)
64
65 #define HIST_NEXT(el)           HIST_FUN(el, H_NEXT, NULL)
66 #define HIST_FIRST(el)          HIST_FUN(el, H_FIRST, NULL)
67 #define HIST_LAST(el)           HIST_FUN(el, H_LAST, NULL)
68 #define HIST_PREV(el)           HIST_FUN(el, H_PREV, NULL)
69 #define HIST_EVENT(el, num)     HIST_FUN(el, H_EVENT, num)
70 #define HIST_LOAD(el, fname)    HIST_FUN(el, H_LOAD fname)
71 #define HIST_SAVE(el, fname)    HIST_FUN(el, H_SAVE fname)
72
73 protected int           hist_init(EditLine *);
74 protected void          hist_end(EditLine *);
75 protected el_action_t   hist_get(EditLine *);
76 protected int           hist_set(EditLine *, hist_fun_t, ptr_t);
77 protected int           hist_list(EditLine *, int, char **);
78 protected int           hist_enlargebuf(EditLine *, size_t, size_t);
79
80 #endif /* _h_el_hist */
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