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