usr.bin/window/tt.h

   1 /*      $NetBSD: tt.h,v 1.9 2009/04/14 08:50:06 lukem Exp $     */
   2
   3 /*
   4  * Copyright (c) 1983, 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  * Edward Wang at The University of California, Berkeley.
   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  *      @(#)tt.h        8.1 (Berkeley) 6/6/93
  35  */
  36
  37 #include <unistd.h>
  38
  39 #ifndef EXTERN
  40 #define EXTERN extern
  41 #endif
  42
  43 /*
  44  * Interface structure for the terminal drivers.
  45  */
  46 struct tt {
  47                 /* startup and cleanup */
  48         void    (*tt_start)(void);
  49         void    (*tt_reset)(void);
  50         void    (*tt_end)(void);
  51
  52                 /* terminal functions */
  53         void    (*tt_move)(int, int);
  54         void    (*tt_insline)(int);
  55         void    (*tt_delline)(int);
  56         void    (*tt_inschar)(char);
  57         void    (*tt_insspace)(int);
  58         void    (*tt_delchar)(int);
  59         void    (*tt_write)(const char *, int); /* write a whole block */
  60         void    (*tt_putc)(char);               /* write one character */
  61         void    (*tt_clreol)(void);
  62         void    (*tt_clreos)(void);
  63         void    (*tt_clear)(void);
  64         void    (*tt_scroll_down)(int);
  65         void    (*tt_scroll_up)(int);
  66         void    (*tt_setscroll)(int, int);/* set scrolling region */
  67         void    (*tt_setmodes)(int);    /* set display modes */
  68         void    (*tt_set_token)(int, char *, int);
  69                                                 /* define a token */
  70         void    (*tt_put_token)(int, const char *, int);
  71                                                 /* refer to a defined token */
  72         void    (*tt_compress)(int);    /* begin, end compression */
  73         void    (*tt_checksum)(char *, int);
  74                                                 /* compute checksum */
  75         void    (*tt_checkpoint)(void); /* checkpoint protocol */
  76         int     (*tt_rint)(char *, int);        /* input processing */
  77
  78                 /* internal variables */
  79         char tt_modes;                  /* the current display modes */
  80         char tt_nmodes;                 /* the new modes for next write */
  81         char tt_insert;                 /* currently in insert mode */
  82         int tt_row;                     /* cursor row */
  83         int tt_col;                     /* cursor column */
  84         int tt_scroll_top;              /* top of scrolling region */
  85         int tt_scroll_bot;              /* bottom of scrolling region */
  86
  87                 /* terminal info */
  88         int tt_nrow;                    /* number of display rows */
  89         int tt_ncol;                    /* number of display columns */
  90         char tt_availmodes;             /* the display modes supported */
  91         char tt_wrap;                   /* has auto wrap around */
  92         char tt_retain;                 /* can retain below (db flag) */
  93         short tt_padc;                  /* the pad character */
  94         int tt_ntoken;                  /* number of compression tokens */
  95         int tt_token_min;               /* minimun token size */
  96         int tt_token_max;               /* maximum token size */
  97         int tt_set_token_cost;          /* cost in addition to string */
  98         int tt_put_token_cost;          /* constant cost */
  99         int tt_ack;                     /* checkpoint ack-nack flag */
 100
 101                 /* the frame characters */
 102         short *tt_frame;
 103
 104                 /* ttflush() hook */
 105         void    (*tt_flush)(void);
 106 };
 107 EXTERN struct tt tt;
 108
 109 /*
 110  * tt_padc is used by the compression routine.
 111  * It is a short to allow the driver to indicate that there is no padding.
 112  */
 113 #define TT_PADC_NONE 0x100
 114
 115 /*
 116  * List of terminal drivers.
 117  */
 118 struct tt_tab {
 119         const char *tt_name;
 120         int tt_len;
 121         int (*tt_func)(void);
 122 };
 123 EXTERN struct tt_tab tt_tab[];
 124
 125 /*
 126  * Clean interface to termcap routines.
 127  * Too may t's.
 128  */
 129 EXTERN char tt_strings[1024];           /* string buffer */
 130 EXTERN char *tt_strp;                   /* pointer for it */
 131
 132 struct tt_str {
 133         const char *ts_str;
 134         int ts_n;
 135 };
 136
 137 struct tt_str *tttgetstr(const char *);
 138 struct tt_str *ttxgetstr(const char *); /* tgetstr() and expand delays */
 139
 140 int     tt_f100(void);
 141 int     tt_generic(void);
 142 int     tt_h19(void);
 143 int     tt_h29(void);
 144 int     tt_tvi925(void);
 145 int     tt_wyse60(void);
 146 int     tt_wyse75(void);
 147 int     tt_zapple(void);
 148 int     tt_zentec(void);
 149 void    ttflush(void);
 150 int     ttinit(void);
 151 void    ttpgoto(struct tt_str *, int, int, int);
 152 void    ttputs(const char *);
 153 int     ttstrcmp(struct tt_str *, struct tt_str *);
 154 void    tttgoto(struct tt_str *, int, int);
 155 int     tttputc(int);
 156 void    ttwrite(const char *, int);
 157 int     ttxputc(int);
 158
 159 #define tttputs(s, n)   tputs((s)->ts_str, (n), tttputc)
 160 #define ttxputs(s)      ttwrite((s)->ts_str, (s)->ts_n)
 161
 162 /*
 163  * Buffered output without stdio.
 164  * These variables have different meanings from the ww_ob* variables.
 165  * But I'm too lazy to think up different names.
 166  */
 167 EXTERN char *tt_ob;
 168 EXTERN char *tt_obp;
 169 EXTERN char *tt_obe;
 170 #define ttputc(c)       (tt_obp < tt_obe ? (*tt_obp++ = (c)) \
 171                                 : (ttflush(), *tt_obp++ = (c)))
 172
 173 /*
 174  * Convenience macros for the drivers
 175  * They require char.h
 176  */
 177 #define ttctrl(c)       ttputc(ctrl(c))
 178 #define ttesc(c)        (ttctrl('['), ttputc(c))