1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Edward Wang at The University of California, Berkeley. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)tt.h 8.1 (Berkeley) 6/6/93 37 * $FreeBSD: src/usr.bin/window/tt.h,v 1.1.1.1.14.1 2001/05/17 09:45:01 obrien Exp $ 38 * $DragonFly: src/usr.bin/window/tt.h,v 1.2 2003/06/17 04:29:34 dillon Exp $ 39 */ 40 41 /* 42 * Interface structure for the terminal drivers. 43 */ 44 struct tt { 45 /* startup and cleanup */ 46 int (*tt_start)(); 47 int (*tt_reset)(); 48 int (*tt_end)(); 49 50 /* terminal functions */ 51 int (*tt_move)(); 52 int (*tt_insline)(); 53 int (*tt_delline)(); 54 int (*tt_inschar)(); 55 int (*tt_insspace)(); 56 int (*tt_delchar)(); 57 int (*tt_write)(); /* write a whole block */ 58 int (*tt_putc)(); /* write one character */ 59 int (*tt_clreol)(); 60 int (*tt_clreos)(); 61 int (*tt_clear)(); 62 int (*tt_scroll_down)(); 63 int (*tt_scroll_up)(); 64 int (*tt_setscroll)(); /* set scrolling region */ 65 int (*tt_setmodes)(); /* set display modes */ 66 int (*tt_set_token)(); /* define a token */ 67 int (*tt_put_token)(); /* refer to a defined token */ 68 int (*tt_compress)(); /* begin, end compression */ 69 int (*tt_checksum)(); /* compute checksum */ 70 int (*tt_checkpoint)(); /* checkpoint protocol */ 71 int (*tt_rint)(); /* input processing */ 72 73 /* internal variables */ 74 char tt_modes; /* the current display modes */ 75 char tt_nmodes; /* the new modes for next write */ 76 char tt_insert; /* currently in insert mode */ 77 int tt_row; /* cursor row */ 78 int tt_col; /* cursor column */ 79 int tt_scroll_top; /* top of scrolling region */ 80 int tt_scroll_bot; /* bottom of scrolling region */ 81 82 /* terminal info */ 83 int tt_nrow; /* number of display rows */ 84 int tt_ncol; /* number of display columns */ 85 char tt_availmodes; /* the display modes supported */ 86 char tt_wrap; /* has auto wrap around */ 87 char tt_retain; /* can retain below (db flag) */ 88 short tt_padc; /* the pad character */ 89 int tt_ntoken; /* number of compression tokens */ 90 int tt_token_min; /* minimun token size */ 91 int tt_token_max; /* maximum token size */ 92 int tt_set_token_cost; /* cost in addition to string */ 93 int tt_put_token_cost; /* constant cost */ 94 int tt_ack; /* checkpoint ack-nack flag */ 95 96 /* the frame characters */ 97 short *tt_frame; 98 99 /* ttflush() hook */ 100 int (*tt_flush)(); 101 }; 102 struct tt tt; 103 104 /* 105 * tt_padc is used by the compression routine. 106 * It is a short to allow the driver to indicate that there is no padding. 107 */ 108 #define TT_PADC_NONE 0x100 109 110 /* 111 * List of terminal drivers. 112 */ 113 struct tt_tab { 114 char *tt_name; 115 int tt_len; 116 int (*tt_func)(); 117 }; 118 extern struct tt_tab tt_tab[]; 119 120 /* 121 * Clean interface to termcap routines. 122 * Too may t's. 123 */ 124 char tt_strings[1024]; /* string buffer */ 125 char *tt_strp; /* pointer for it */ 126 127 struct tt_str { 128 char *ts_str; 129 int ts_n; 130 }; 131 132 struct tt_str *tttgetstr(); 133 struct tt_str *ttxgetstr(); /* tgetstr() and expand delays */ 134 135 int tttputc(); 136 #define tttputs(s, n) tputs((s)->ts_str, (n), tttputc) 137 #define ttxputs(s) ttwrite((s)->ts_str, (s)->ts_n) 138 139 /* 140 * Buffered output without stdio. 141 * These variables have different meanings from the ww_ob* variables. 142 * But I'm too lazy to think up different names. 143 */ 144 char *tt_ob; 145 char *tt_obp; 146 char *tt_obe; 147 #define ttputc(c) (tt_obp < tt_obe ? (*tt_obp++ = (c)) \ 148 : (ttflush(), *tt_obp++ = (c))) 149 150 /* 151 * Convenience macros for the drivers 152 * They require char.h 153 */ 154 #define ttctrl(c) ttputc(ctrl(c)) 155 #define ttesc(c) (ttctrl('['), ttputc(c)) 156