1/* $NetBSD: curterm.c,v 1.7 2011/10/04 11:01:14 roy Exp $ */
2
3/*
4 * Copyright (c) 2009, 2011 The NetBSD Foundation, Inc.
5 *
6 * This code is derived from software contributed to The NetBSD Foundation
7 * by Roy Marples.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__RCSID("$NetBSD: curterm.c,v 1.7 2011/10/04 11:01:14 roy Exp $");
32
33#include <assert.h>
34#include <stdlib.h>
35#include <string.h>
36#include <term_private.h>
37#include <term.h>
38#include <termios.h>
39#include <stdio.h>
40
41TERMINAL *cur_term;
42
43/*
44 * There is no standard way of getting a list of aliases for the
45 * terminal. However, some applications such as telnet want to know this.
46 * ncurses dumps the terminfo header into an undefined variable ttytype
47 * and these applications then parse it to work out the aliases.
48 * We should do the same for now, until a standard mechanism for getting
49 * the information is available or the need for it goes away.
50 */
51#define NAMESIZE	256
52char ttytype[NAMESIZE];
53
54static const speed_t bauds[] = {
55	0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 2400, 4800, 9600,
56	19200, 38400, 57600, 115200, 230400, 460800, 921600
57};
58
59void
60_ti_setospeed(TERMINAL *term)
61{
62	struct termios termios;
63	speed_t os;
64	size_t i;
65
66	_DIAGASSERT(term != NULL);
67
68	term->_ospeed = 0;
69	if (tcgetattr(term->fildes, &termios) == 0) {
70		os = cfgetospeed(&termios);
71		for (i = 0; i < __arraycount(bauds); i++)
72			if (bauds[i] == os) {
73				term->_ospeed = i;
74				break;
75			}
76	}
77}
78
79TERMINAL *
80set_curterm(TERMINAL *nterm)
81{
82	TERMINAL *oterm;
83	size_t l, n;
84	char *p;
85
86	oterm = cur_term;
87	cur_term = nterm;
88
89	ospeed = 0;
90	if (cur_term == NULL)
91		PC = '\0';
92	else {
93		if (pad_char == NULL)
94			PC = '\0';
95		else
96			PC = *pad_char;
97		_ti_setospeed(nterm);
98		ospeed = nterm->_ospeed;
99
100		p = ttytype;
101		l = sizeof(ttytype);
102		if ((n = strlcpy(p, nterm->name, l)) == strlen(p)) {
103			p += n;
104			l -= n;
105			*p++ = '|';
106			l--;
107			if (nterm->_alias  &&
108				(n = strlcpy(p, nterm->_alias, l)) == strlen(p))
109			{
110				p += n;
111				l -= n;
112				*p++ = '|';
113				l--;
114			}
115			if (nterm->desc  &&
116				(n = strlcpy(p, nterm->desc, l)) == strlen(p))
117			{
118				p += n;
119				l -= n;
120				*p++ = '|';
121				l--;
122			}
123			p--;
124		}
125		*p = '\0';
126	}
127
128	return oterm;
129}
130
131int
132del_curterm(TERMINAL *oterm)
133{
134
135	if (oterm == NULL)
136		return ERR;
137	free(oterm->_area);
138	free(oterm->strs);
139	free(oterm->nums);
140	free(oterm->flags);
141	free(oterm->_userdefs);
142	free(oterm);
143	return OK;
144}
145
146char *
147termname(void)
148{
149
150        _DIAGASSERT(cur_term != NULL);
151	return __UNCONST(cur_term->name);
152}
153
154static const char * nullname = '\0';
155
156char *
157longname(void)
158{
159
160	_DIAGASSERT(cur_term != NULL);
161	if (cur_term->desc == NULL)
162		return __UNCONST(nullname);
163	return __UNCONST(cur_term->desc);
164}
165