1 /* $NetBSD: hist.h,v 1.8 2002/11/15 14:32:33 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. 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_SET(el, num) HIST_FUN(el, H_SET, 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, const char **); 78 protected int hist_enlargebuf(EditLine *, size_t, size_t); 79 80 #endif /* _h_el_hist */ 81