xref: /original-bsd/usr.bin/window/ttinit.c (revision 7596ee73)
1 /*
2  * Copyright (c) 1983 Regents of the University of California.
3  * 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	3.27 (Berkeley) 08/12/90";
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 	int ttflush();
48 
49 	tt_strp = tt_strings;
50 
51 	/*
52 	 * Set output buffer size to about 1 second of output time.
53 	 */
54 	i = MIN(wwbaud/10, 512);
55 	if ((tt_ob = malloc((unsigned) i)) == 0) {
56 		wwerrno = WWE_NOMEM;
57 		return -1;
58 	}
59 	tt_obp = tt_ob;
60 	tt_obe = tt_ob + i;
61 
62 	/*
63 	 * Use the standard name of the terminal (i.e. the second
64 	 * name in termcap).
65 	 */
66 	for (p = wwtermcap; *p && *p != '|' && *p != ':'; p++)
67 		;
68 	if (*p == '|')
69 		p++;
70 	for (q = p; *q && *q != '|' && *q != ':'; q++)
71 		;
72 	if (q != p && (t = malloc((unsigned) (q - p + 1))) != 0) {
73 		wwterm = t;
74 		while (p < q)
75 			*t++ = *p++;
76 		*t = 0;
77 	}
78 	for (tp = tt_tab; tp->tt_name != 0; tp++)
79 		if (strncmp(tp->tt_name, wwterm, tp->tt_len) == 0)
80 			break;
81 	if (tp->tt_name == 0) {
82 		wwerrno = WWE_BADTERM;
83 		return -1;
84 	}
85 	if ((*tp->tt_func)() < 0) {
86 		wwerrno = WWE_CANTDO;
87 		return -1;
88 	}
89 	if (wwgetttysize(0, &tt.tt_nrow, &tt.tt_ncol) < 0)
90 		return -1;
91 	tt.tt_scroll_top = 0;
92 	tt.tt_scroll_bot = tt.tt_nrow - 1;
93 	tt.tt_flush = ttflush;
94 	return 0;
95 }
96