1 /* $OpenBSD: tt.h,v 1.4 2003/06/03 02:56:23 millert Exp $ */ 2 /* $NetBSD: tt.h,v 1.3 1995/09/28 10:34:42 tls Exp $ */ 3 4 /* 5 * Copyright (c) 1983, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Edward Wang at The University of California, Berkeley. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)tt.h 8.1 (Berkeley) 6/6/93 36 */ 37 38 /* 39 * Interface structure for the terminal drivers. 40 */ 41 struct tt { 42 /* startup and cleanup */ 43 int (*tt_start)(); 44 int (*tt_reset)(); 45 int (*tt_end)(); 46 47 /* terminal functions */ 48 int (*tt_move)(); 49 int (*tt_insline)(); 50 int (*tt_delline)(); 51 int (*tt_inschar)(); 52 int (*tt_insspace)(); 53 int (*tt_delchar)(); 54 int (*tt_write)(); /* write a whole block */ 55 int (*tt_putc)(); /* write one character */ 56 int (*tt_clreol)(); 57 int (*tt_clreos)(); 58 int (*tt_clear)(); 59 int (*tt_scroll_down)(); 60 int (*tt_scroll_up)(); 61 int (*tt_setscroll)(); /* set scrolling region */ 62 int (*tt_setmodes)(); /* set display modes */ 63 int (*tt_set_token)(); /* define a token */ 64 int (*tt_put_token)(); /* refer to a defined token */ 65 int (*tt_compress)(); /* begin, end compression */ 66 int (*tt_checksum)(); /* compute checksum */ 67 int (*tt_checkpoint)(); /* checkpoint protocol */ 68 int (*tt_rint)(); /* input processing */ 69 70 /* internal variables */ 71 char tt_modes; /* the current display modes */ 72 char tt_nmodes; /* the new modes for next write */ 73 char tt_insert; /* currently in insert mode */ 74 int tt_row; /* cursor row */ 75 int tt_col; /* cursor column */ 76 int tt_scroll_top; /* top of scrolling region */ 77 int tt_scroll_bot; /* bottom of scrolling region */ 78 79 /* terminal info */ 80 int tt_nrow; /* number of display rows */ 81 int tt_ncol; /* number of display columns */ 82 char tt_availmodes; /* the display modes supported */ 83 char tt_wrap; /* has auto wrap around */ 84 char tt_retain; /* can retain below (db flag) */ 85 short tt_padc; /* the pad character */ 86 int tt_ntoken; /* number of compression tokens */ 87 int tt_token_min; /* minimun token size */ 88 int tt_token_max; /* maximum token size */ 89 int tt_set_token_cost; /* cost in addition to string */ 90 int tt_put_token_cost; /* constant cost */ 91 int tt_ack; /* checkpoint ack-nack flag */ 92 93 /* the frame characters */ 94 short *tt_frame; 95 96 /* ttflush() hook */ 97 int (*tt_flush)(); 98 }; 99 struct tt tt; 100 101 /* 102 * tt_padc is used by the compression routine. 103 * It is a short to allow the driver to indicate that there is no padding. 104 */ 105 #define TT_PADC_NONE 0x100 106 107 /* 108 * List of terminal drivers. 109 */ 110 struct tt_tab { 111 char *tt_name; 112 int tt_len; 113 int (*tt_func)(); 114 }; 115 extern struct tt_tab tt_tab[]; 116 117 /* 118 * Clean interface to termcap routines. 119 * Too may t's. 120 */ 121 char tt_strings[1024]; /* string buffer */ 122 char *tt_strp; /* pointer for it */ 123 124 struct tt_str { 125 char *ts_str; 126 int ts_n; 127 }; 128 129 struct tt_str *tttgetstr(); 130 struct tt_str *ttxgetstr(); /* tgetstr() and expand delays */ 131 132 int tttputc(); 133 #define tttputs(s, n) tputs((s)->ts_str, (n), tttputc) 134 #define ttxputs(s) ttwrite((s)->ts_str, (s)->ts_n) 135 136 /* 137 * Buffered output without stdio. 138 * These variables have different meanings from the ww_ob* variables. 139 * But I'm too lazy to think up different names. 140 */ 141 char *tt_ob; 142 char *tt_obp; 143 char *tt_obe; 144 #define ttputc(c) (tt_obp < tt_obe ? (*tt_obp++ = (c)) \ 145 : (ttflush(), *tt_obp++ = (c))) 146 147 /* 148 * Convenience macros for the drivers 149 * They require char.h 150 */ 151 #define ttctrl(c) ttputc(ctrl(c)) 152 #define ttesc(c) (ttctrl('['), ttputc(c)) 153