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el.h revision 1.16 
      1 /*	$NetBSD: el.h,v 1.16 2003/10/18 23:48:42 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. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	@(#)el.h	8.1 (Berkeley) 6/4/93
     35  */
     36 
     37 /*
     38  * el.h: Internal structures.
     39  */
     40 #ifndef _h_el
     41 #define	_h_el
     42 /*
     43  * Local defaults
     44  */
     45 #define	KSHVI
     46 #define	VIDEFAULT
     47 #define	ANCHOR
     48 
     49 #include <stdio.h>
     50 #include <sys/types.h>
     51 
     52 #define	EL_BUFSIZ	1024		/* Maximum line size		*/
     53 
     54 #define	HANDLE_SIGNALS	0x01
     55 #define	NO_TTY		0x02
     56 #define	EDIT_DISABLED	0x04
     57 #define	UNBUFFERED	0x08
     58 
     59 typedef int bool_t;			/* True or not			*/
     60 
     61 typedef unsigned char el_action_t;	/* Index to command array	*/
     62 
     63 typedef struct coord_t {		/* Position on the screen	*/
     64 	int	h;
     65 	int	v;
     66 } coord_t;
     67 
     68 typedef struct el_line_t {
     69 	char	*buffer;		/* Input line			*/
     70 	char	*cursor;		/* Cursor position		*/
     71 	char	*lastchar;		/* Last character		*/
     72 	const char	*limit;		/* Max position			*/
     73 } el_line_t;
     74 
     75 /*
     76  * Editor state
     77  */
     78 typedef struct el_state_t {
     79 	int		inputmode;	/* What mode are we in?		*/
     80 	int		doingarg;	/* Are we getting an argument?	*/
     81 	int		argument;	/* Numeric argument		*/
     82 	int		metanext;	/* Is the next char a meta char */
     83 	el_action_t	lastcmd;	/* Previous command		*/
     84 	el_action_t	thiscmd;	/* this command 		*/
     85 	char		thisch;		/* char that generated it	*/
     86 } el_state_t;
     87 
     88 /*
     89  * Until we come up with something better...
     90  */
     91 #define	el_strdup(a)	strdup(a)
     92 #define	el_malloc(a)	malloc(a)
     93 #define	el_realloc(a,b)	realloc(a, b)
     94 #define	el_free(a)	free(a)
     95 
     96 #include "tty.h"
     97 #include "prompt.h"
     98 #include "key.h"
     99 #include "term.h"
    100 #include "refresh.h"
    101 #include "chared.h"
    102 #include "common.h"
    103 #include "search.h"
    104 #include "hist.h"
    105 #include "map.h"
    106 #include "parse.h"
    107 #include "sig.h"
    108 #include "help.h"
    109 #include "read.h"
    110 
    111 struct editline {
    112 	char		 *el_prog;	/* the program name		*/
    113 	FILE		 *el_outfile;	/* Stdio stuff			*/
    114 	FILE		 *el_errfile;	/* Stdio stuff			*/
    115 	int		  el_infd;	/* Input file descriptor	*/
    116 	int		  el_flags;	/* Various flags.		*/
    117 	coord_t		  el_cursor;	/* Cursor location		*/
    118 	char		**el_display;	/* Real screen image = what is there */
    119 	char		**el_vdisplay;	/* Virtual screen image = what we see */
    120 	void		 *el_data;	/* Client data			*/
    121 	el_line_t	  el_line;	/* The current line information	*/
    122 	el_state_t	  el_state;	/* Current editor state		*/
    123 	el_term_t	  el_term;	/* Terminal dependent stuff	*/
    124 	el_tty_t	  el_tty;	/* Tty dependent stuff		*/
    125 	el_refresh_t	  el_refresh;	/* Refresh stuff		*/
    126 	el_prompt_t	  el_prompt;	/* Prompt stuff			*/
    127 	el_prompt_t	  el_rprompt;	/* Prompt stuff			*/
    128 	el_chared_t	  el_chared;	/* Characted editor stuff	*/
    129 	el_map_t	  el_map;	/* Key mapping stuff		*/
    130 	el_key_t	  el_key;	/* Key binding stuff		*/
    131 	el_history_t	  el_history;	/* History stuff		*/
    132 	el_search_t	  el_search;	/* Search stuff			*/
    133 	el_signal_t	  el_signal;	/* Signal handling stuff	*/
    134 	el_read_t	  el_read;	/* Character reading stuff	*/
    135 };
    136 
    137 protected int	el_editmode(EditLine *, int, const char **);
    138 
    139 #ifdef DEBUG
    140 #define	EL_ABORT(a)	do { \
    141 				fprintf(el->el_errfile, "%s, %d: ", \
    142 					 __FILE__, __LINE__); \
    143 				fprintf a; \
    144 				abort(); \
    145 			} while( /*CONSTCOND*/0);
    146 #else
    147 #define EL_ABORT(a)	abort()
    148 #endif
    149 #endif /* _h_el */
    150