hist.h revision 1573
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. 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. 23 * 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 34 * SUCH DAMAGE. 35 * 36 * @(#)hist.h 8.1 (Berkeley) 6/4/93 37 */ 38 39/* 40 * el.hist.c: History functions 41 */ 42#ifndef _h_el_hist 43#define _h_el_hist 44 45#include "histedit.h" 46 47typedef const HistEvent * (*hist_fun_t) __P((ptr_t, int, ...)); 48 49typedef struct el_history_t { 50 char *buf; /* The history buffer */ 51 char *last; /* The last character */ 52 int eventno; /* Event we are looking for */ 53 ptr_t ref; /* Argument for history fcns */ 54 hist_fun_t fun; /* Event access */ 55 const HistEvent *ev; /* Event cookie */ 56} el_history_t; 57 58#define HIST_FUN(el, fn, arg) \ 59 ((((el)->el_history.ev = \ 60 (*(el)->el_history.fun)((el)->el_history.ref, fn, arg)) == NULL) ? \ 61 NULL : (el)->el_history.ev->str) 62 63#define HIST_NEXT(el) HIST_FUN(el, H_NEXT, NULL) 64#define HIST_FIRST(el) HIST_FUN(el, H_FIRST, NULL) 65#define HIST_LAST(el) HIST_FUN(el, H_LAST, NULL) 66#define HIST_PREV(el) HIST_FUN(el, H_PREV, NULL) 67#define HIST_EVENT(el, num) HIST_FUN(el, H_EVENT, num) 68 69protected int hist_init __P((EditLine *)); 70protected void hist_end __P((EditLine *)); 71protected el_action_t hist_get __P((EditLine *)); 72protected int hist_set __P((EditLine *, hist_fun_t, ptr_t)); 73protected int hist_list __P((EditLine *, int, char **)); 74 75#endif /* _h_el_hist */ 76