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/* readline.h
* This is the header file for the Readline module for Tap.
*/
/* Copyright (C) 1999 Jonathan duSaint
*
* This file is part of Tap, an interactive program for reading and
* writing data to the serial port to facilitate the reverse
* engineering of communication protocols.
*
* Tap is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* Tap is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
* License for more details.
*
* The GNU General Public License is generally kept in a file called
* COPYING or LICENSE. If you do not have a copy of the license, write
* to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "tap.h"
/* extended character codes returned by readchar() */
#define ECQUIT 0x100 /* \n */
#define ECUP 0x101 /* ^P */
#define ECDOWN 0x102 /* ^N */
#define ECLEFT 0x103 /* ^B */
#define ECRIGHT 0x104 /* ^F */
#define ECSTART 0x105 /* ^A */
#define ECEND 0x106 /* ^E */
#define ECDEL 0x107 /* ^D */
#define ECERASE 0x108 /* ^H */
#define ECMARK 0x109 /* ^<spc> */
#define ECKILLR 0x10A /* ^W */
#define ECKILLL 0x10B /* ^K */
#define ECYANK 0x10C /* ^Y */
#define ECTRANS 0x10D /* ^T */
#define ECCLEAR 0x10E /* ^L */
#define ECCOUNT 0x10F /* ^U */
#define ECTAB 0x110 /* \t */
#define ECUNKNOWN 0xFFF /* unrecognized control code */
/* raw character codes */
#define RCUP 0x10
#define RCDOWN 0x0E
#define RCLEFT 0x02
#define RCRIGHT 0x06
#define RCSTART 0x01
#define RCEND 0x05
#define RCDEL 0x04
#define RCDELK 0x7F
#define RCERASE 0x08
#define RCMARK 0x00
#define RCKILLR 0x17
#define RCKILLL 0x0B
#define RCYANK 0x19
#define RCTRANS 0x14
#define RCCLEAR 0x0C
#define RCCOUNT 0x15
#define RCTAB '\t'
/* arrow key escape sequence */
#define RCESC 0x1B
#define EARROW 0x4F
#define AUP 0x41
#define ADOWN 0x42
#define ARIGHT 0x43
#define ALEFT 0x44
/* used by do_tab_completion () when creating internal structures */
#define INCR_VALUE 8
/* the default number of entries in the kill ring */
#define DEFAULT_KILL_RING_SIZE 32
/* the minimum amount of padding to use when printing partial matches */
#define PADDING 2
/* used for determing the actual amount of memory used by a line of text */
#define ROUND_UP_SIZE(nom) (((nom + 1) / GROW_SIZE) * GROW_SIZE + GROW_SIZE)
/* specifies to delete_char() whether to delete the
* character to the left or the right of the point
*/
enum direction
{
LEFT, RIGHT
};
/* kill ring entries */
struct kill_ring
{
long length; /* the length of TEXT */
char *text; /* the actual text in the ring */
struct kill_ring *prev; /* the previous entry in the kill ring */
struct kill_ring *next; /* the next entry in the kill ring */
};
/* history list entries */
struct history_node
{
char *data; /* the actual history entry */
char *saved_data; /* temporary entry used for when an
earlier line is being edited */
struct history_node *prev; /* the previous entry in the history list */
struct history_node *next; /* the next entry in the history list */
};
/* global variables */
/* prompt to use */
extern char *prompt;
/* the line under construction */
extern char *current_line;
/* its actual size */
extern long line_size;
/* number of characters active */
extern long chars_in_line;
/* where the point is */
extern long current_position;
/* for when C-<spc> is pressed */
extern long mark_start;
/* start position of the cursor */
extern int start_y;
/* cursor position after the prompt has been printed */
extern int start_x;
/* the last repeat value -- should be 1 unless C-U has just been typed */
extern int repeat_value;
/* the kill ring */
extern struct kill_ring *the_kill_ring;
/* a zero length string */
extern char zero_length_string[];
/* function prototypes */
/* the main function -- read a line of text */
extern char *readline (char *);
/* character functions used by readline () */
extern int readchar (void);
extern void dispatch_special (int);
/* keystroke functions */
extern void kill_region (void);
extern void kill_to_eol (void);
extern void insert_char (char);
extern void delete_char (enum direction);
extern void move_cursor_left (void);
extern void move_cursor_right (void);
extern void move_cursor_to_start (void);
extern void move_cursor_to_end (void);
extern void transpose_chars (void);
extern void yank_text (void);
extern void do_count (void);
/* functions for the kill ring */
extern void kill_to_ring (int, int);
extern char *get_ring_entry (int);
extern void ring_init (void);
/* tab completion */
extern void do_tab_completion (void);
/* history functions */
extern void add_history(char *);
extern char *next_history (void);
extern char *prev_history (void);
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