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1.1 root 1: /*
2: * Copyright (c) 1983 Regents of the University of California.
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms are permitted
6: * provided that the above copyright notice and this paragraph are
7: * duplicated in all such forms and that any documentation,
8: * advertising materials, and other materials related to such
9: * distribution and use acknowledge that the software was developed
10: * by the University of California, Berkeley. The name of the
11: * University may not be used to endorse or promote products derived
12: * from this software without specific prior written permission.
13: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14: * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15: * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16: *
17: * @(#)tt.h 3.20 (Berkeley) 6/29/88
18: */
19:
20: /*
21: * Interface structure for the terminal drivers.
22: */
23: struct tt {
24: /* startup and cleanup */
25: int (*tt_init)();
26: int (*tt_end)();
27:
28: /* terminal functions */
29: int (*tt_move)();
30: int (*tt_insline)();
31: int (*tt_delline)();
32: int (*tt_delchar)();
33: int (*tt_write)(); /* write a whole block */
34: int (*tt_putc)(); /* write one character */
35: int (*tt_clreol)();
36: int (*tt_clreos)();
37: int (*tt_clear)();
38: int (*tt_scroll_down)();
39: int (*tt_scroll_up)();
40: int (*tt_setscroll)(); /* set scrolling region */
41: int (*tt_setinsert)(); /* set insert mode */
42: int (*tt_setmodes)(); /* set display modes */
43:
44: /* internal variables */
45: char tt_modes; /* the current display modes */
46: char tt_nmodes; /* the new modes for next write */
47: char tt_insert; /* currently in insert mode */
48: char tt_ninsert; /* insert mode on next write */
49: int tt_row; /* cursor row */
50: int tt_col; /* cursor column */
51: int tt_scroll_top; /* top of scrolling region */
52: int tt_scroll_bot; /* bottom of scrolling region */
53:
54: /* terminal info */
55: int tt_nrow; /* number of display rows */
56: int tt_ncol; /* number of display columns */
57: char tt_hasinsert; /* has insert character */
58: char tt_availmodes; /* the display modes supported */
59: char tt_wrap; /* has auto wrap around */
60: char tt_retain; /* can retain below (db flag) */
61:
62: /* the frame characters */
63: short *tt_frame;
64: };
65: struct tt tt;
66:
67: /*
68: * List of terminal drivers.
69: */
70: struct tt_tab {
71: char *tt_name;
72: int tt_len;
73: int (*tt_func)();
74: };
75: extern struct tt_tab tt_tab[];
76:
77: /*
78: * Clean interface to termcap routines.
79: * Too may t's.
80: */
81: char tt_strings[1024]; /* string buffer */
82: char *tt_strp; /* pointer for it */
83:
84: struct tt_str {
85: char *ts_str;
86: int ts_n;
87: };
88:
89: struct tt_str *tttgetstr();
90: struct tt_str *ttxgetstr(); /* tgetstr() and expand delays */
91:
92: int tttputc();
93: #define tttputs(s, n) tputs((s)->ts_str, (n), tttputc)
94: #define ttxputs(s) ttwrite((s)->ts_str, (s)->ts_n)
95:
96: /*
97: * Buffered output without stdio.
98: * These variables have different meanings from the ww_ob* variabels.
99: * But I'm too lazy to think up different names.
100: */
101: char tt_ob[512];
102: char *tt_obp;
103: char *tt_obe;
104: #define ttputc(c) (tt_obp < tt_obe ? (*tt_obp++ = (c)) \
105: : (ttflush(), *tt_obp++ = (c)))
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