xref: /original-bsd/usr.bin/window/ttinit.c (revision c3e32dec)
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  * %sccs.include.redist.c%
9  */
10 
11 #ifndef lint
12 static char sccsid[] = "@(#)ttinit.c	8.1 (Berkeley) 06/06/93";
13 #endif /* not lint */
14 
15 #include "ww.h"
16 #include "tt.h"
17 
18 int tt_h19();
19 int tt_h29();
20 int tt_f100();
21 int tt_tvi925();
22 int tt_wyse75();
23 int tt_wyse60();
24 int tt_zapple();
25 int tt_zentec();
26 int tt_generic();
27 struct tt_tab tt_tab[] = {
28 	{ "h19",	3, tt_h19 },
29 	{ "h29",	3, tt_h29 },
30 	{ "f100",	4, tt_f100 },
31 	{ "tvi925",	6, tt_tvi925 },
32 	{ "wyse75",	6, tt_wyse75 },
33 	{ "wyse60",	6, tt_wyse60 },
34 	{ "w60",	3, tt_wyse60 },
35 	{ "zapple",	6, tt_zapple },
36 	{ "zentec",	6, tt_zentec },
37 	{ "generic",	0, tt_generic },
38 	0
39 };
40 
41 ttinit()
42 {
43 	int i;
44 	register struct tt_tab *tp;
45 	register char *p, *q;
46 	register char *t;
47 
48 	tt_strp = tt_strings;
49 
50 	/*
51 	 * Set output buffer size to about 1 second of output time.
52 	 */
53 	i = MIN(wwbaud/10, 512);
54 	if ((tt_ob = malloc((unsigned) i)) == 0) {
55 		wwerrno = WWE_NOMEM;
56 		return -1;
57 	}
58 	tt_obp = tt_ob;
59 	tt_obe = tt_ob + i;
60 
61 	/*
62 	 * Use the standard name of the terminal (i.e. the second
63 	 * name in termcap).
64 	 */
65 	for (p = wwtermcap; *p && *p != '|' && *p != ':'; p++)
66 		;
67 	if (*p == '|')
68 		p++;
69 	for (q = p; *q && *q != '|' && *q != ':'; q++)
70 		;
71 	if (q != p && (t = malloc((unsigned) (q - p + 1))) != 0) {
72 		wwterm = t;
73 		while (p < q)
74 			*t++ = *p++;
75 		*t = 0;
76 	}
77 	for (tp = tt_tab; tp->tt_name != 0; tp++)
78 		if (strncmp(tp->tt_name, wwterm, tp->tt_len) == 0)
79 			break;
80 	if (tp->tt_name == 0) {
81 		wwerrno = WWE_BADTERM;
82 		return -1;
83 	}
84 	if ((*tp->tt_func)() < 0) {
85 		wwerrno = WWE_CANTDO;
86 		return -1;
87 	}
88 	if (wwgetttysize(0, &tt.tt_nrow, &tt.tt_ncol) < 0)
89 		return -1;
90 	tt.tt_scroll_top = 0;
91 	tt.tt_scroll_bot = tt.tt_nrow - 1;
92 	return 0;
93 }
94