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: head/usr.bin/window/tt.h 67607 2000-10-26 10:07:20Z obrien $ 38 */ 39 40 /* 41 * Interface structure for the terminal drivers. 42 */ 43 struct tt { 44 /* startup and cleanup */ 45 int (*tt_start)(); 46 int (*tt_reset)(); 47 int (*tt_end)(); 48 49 /* terminal functions */ 50 int (*tt_move)(); 51 int (*tt_insline)(); 52 int (*tt_delline)(); 53 int (*tt_inschar)(); 54 int (*tt_insspace)(); 55 int (*tt_delchar)(); 56 int (*tt_write)(); /* write a whole block */ 57 int (*tt_putc)(); /* write one character */ 58 int (*tt_clreol)(); 59 int (*tt_clreos)(); 60 int (*tt_clear)(); 61 int (*tt_scroll_down)(); 62 int (*tt_scroll_up)(); 63 int (*tt_setscroll)(); /* set scrolling region */ 64 int (*tt_setmodes)(); /* set display modes */ 65 int (*tt_set_token)(); /* define a token */ 66 int (*tt_put_token)(); /* refer to a defined token */ 67 int (*tt_compress)(); /* begin, end compression */ 68 int (*tt_checksum)(); /* compute checksum */ 69 int (*tt_checkpoint)(); /* checkpoint protocol */ 70 int (*tt_rint)(); /* input processing */ 71 72 /* internal variables */ 73 char tt_modes; /* the current display modes */ 74 char tt_nmodes; /* the new modes for next write */ 75 char tt_insert; /* currently in insert mode */ 76 int tt_row; /* cursor row */ 77 int tt_col; /* cursor column */ 78 int tt_scroll_top; /* top of scrolling region */ 79 int tt_scroll_bot; /* bottom of scrolling region */ 80 81 /* terminal info */ 82 int tt_nrow; /* number of display rows */ 83 int tt_ncol; /* number of display columns */ 84 char tt_availmodes; /* the display modes supported */ 85 char tt_wrap; /* has auto wrap around */ 86 char tt_retain; /* can retain below (db flag) */ 87 short tt_padc; /* the pad character */ 88 int tt_ntoken; /* number of compression tokens */ 89 int tt_token_min; /* minimun token size */ 90 int tt_token_max; /* maximum token size */ 91 int tt_set_token_cost; /* cost in addition to string */ 92 int tt_put_token_cost; /* constant cost */ 93 int tt_ack; /* checkpoint ack-nack flag */ 94 95 /* the frame characters */ 96 short *tt_frame; 97 98 /* ttflush() hook */ 99 int (*tt_flush)(); 100 }; 101 extern struct tt tt; 102 103 /* 104 * tt_padc is used by the compression routine. 105 * It is a short to allow the driver to indicate that there is no padding. 106 */ 107 #define TT_PADC_NONE 0x100 108 109 /* 110 * List of terminal drivers. 111 */ 112 struct tt_tab { 113 char *tt_name; 114 int tt_len; 115 int (*tt_func)(); 116 }; 117 extern struct tt_tab tt_tab[]; 118 119 /* 120 * Clean interface to termcap routines. 121 * Too may t's. 122 */ 123 extern char tt_strings[1024]; /* string buffer */ 124 extern char *tt_strp; /* pointer for it */ 125 126 struct tt_str { 127 char *ts_str; 128 int ts_n; 129 }; 130 131 struct tt_str *tttgetstr(); 132 struct tt_str *ttxgetstr(); /* tgetstr() and expand delays */ 133 134 int tttputc(); 135 #define tttputs(s, n) tputs((s)->ts_str, (n), tttputc) 136 #define ttxputs(s) ttwrite((s)->ts_str, (s)->ts_n) 137 138 /* 139 * Buffered output without stdio. 140 * These variables have different meanings from the ww_ob* variables. 141 * But I'm too lazy to think up different names. 142 */ 143 extern char *tt_ob; 144 extern char *tt_obp; 145 extern char *tt_obe; 146 #define ttputc(c) (tt_obp < tt_obe ? (*tt_obp++ = (c)) \ 147 : (ttflush(), *tt_obp++ = (c))) 148 149 /* 150 * Convenience macros for the drivers 151 * They require char.h 152 */ 153 #define ttctrl(c) ttputc(ctrl(c)) 154 #define ttesc(c) (ttctrl('['), ttputc(c)) 155