xref: /original-bsd/usr.bin/window/ttinit.c (revision 7e7b101a)
1 #ifndef lint
2 static char sccsid[] = "@(#)ttinit.c	3.14 04/24/85";
3 #endif
4 
5 /*
6  * Copyright (c) 1983 Regents of the University of California,
7  * All rights reserved.  Redistribution permitted subject to
8  * the terms of the Berkeley Software License Agreement.
9  */
10 
11 #include "ww.h"
12 #include "tt.h"
13 
14 int tt_h19();
15 int tt_h29();
16 int tt_f100();
17 int tt_tvi925();
18 int tt_generic();
19 struct tt_tab tt_tab[] = {
20 	{ "h19",	3, tt_h19 },
21 	{ "h29",	3, tt_h29 },
22 	{ "f100",	4, tt_f100 },
23 	{ "tvi925",	6, tt_tvi925 },
24 	{ "generic",	0, tt_generic },
25 	0
26 };
27 
28 ttinit()
29 {
30 	register struct tt_tab *tp;
31 	register char *p, *q;
32 	register char *t;
33 	struct winsize winsize;
34 
35 	tt_strp = tt_strings;
36 
37 	/*
38 	 * Set output buffer size to about 1 second of output time.
39 	 */
40 	tt_obp = tt_ob;
41 	tt_obe = tt_ob + MIN(wwbaud/10, sizeof tt_ob);
42 
43 	/*
44 	 * Use the standard name of the terminal (i.e. the second
45 	 * name in termcap).
46 	 */
47 	for (p = wwtermcap; *p && *p != '|' && *p != ':'; p++)
48 		;
49 	if (*p == '|')
50 		p++;
51 	for (q = p; *q && *q != '|' && *q != ':'; q++)
52 		;
53 	if (q != p && (t = malloc((unsigned) (q - p + 1))) != 0) {
54 		wwterm = t;
55 		while (p < q)
56 			*t++ = *p++;
57 		*t = 0;
58 	}
59 	for (tp = tt_tab; tp->tt_name != 0; tp++)
60 		if (strncmp(tp->tt_name, wwterm, tp->tt_len) == 0)
61 			break;
62 	if (tp->tt_name == 0) {
63 		wwerrno = WWE_BADTERM;
64 		return -1;
65 	}
66 	if ((*tp->tt_func)() < 0) {
67 		wwerrno = WWE_CANTDO;
68 		return -1;
69 	}
70 	if (ioctl(0, (int)TIOCGWINSZ, (char *)&winsize) >= 0 &&
71 	    winsize.ws_row != 0 && winsize.ws_col != 0) {
72 		tt.tt_nrow = winsize.ws_row;
73 		tt.tt_ncol = winsize.ws_col;
74 	}
75 	return 0;
76 }
77