Annotation of src/usr.bin/window/tt.h, Revision 1.1.1.1
1.1 deraadt 1: /* $NetBSD: tt.h,v 1.3 1995/09/28 10:34:42 tls 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. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the University of
21: * California, Berkeley and its contributors.
22: * 4. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: *
38: * @(#)tt.h 8.1 (Berkeley) 6/6/93
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))
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