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)) 179