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hist.h revision 1.6 
      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 */
     81