curterm.c revision 1.4 
1/* $NetBSD: curterm.c,v 1.4 2010/02/22 23:05:39 roy Exp $ */
2
3/*
4 * Copyright (c) 2009 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 1.4 2010/02/22 23:05:39 roy Exp $");
32
33#include <assert.h>
34#include <stdlib.h>
35#include <term_private.h>
36#include <term.h>
37#include <termios.h>
38#include <stdio.h>
39TERMINAL *cur_term;
40
41static const speed_t bauds[] = {
42	0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 2400, 4800, 9600,
43	19200, 38400, 57600, 115200, 230400, 460800, 921600
44};
45
46void
47_ti_setospeed(TERMINAL *term)
48{
49	struct termios termios;
50	speed_t os;
51	size_t i;
52
53	_DIAGASSERT(term != NULL);
54
55	term->_ospeed = 0;
56	if (tcgetattr(term->fildes, &termios) == 0) {
57		os = cfgetospeed(&termios);
58		for (i = 0; i < __arraycount(bauds); i++)
59			if (bauds[i] == os) {
60				term->_ospeed = i;
61				break;
62			}
63	}
64}
65
66TERMINAL *
67set_curterm(TERMINAL *nterm)
68{
69	TERMINAL *oterm;
70
71	oterm = cur_term;
72	cur_term = nterm;
73
74	ospeed = 0;
75	if (cur_term == NULL)
76		PC = '\0';
77	else {
78		if (pad_char == NULL)
79			PC = '\0';
80		else
81			PC = *pad_char;
82		_ti_setospeed(nterm);
83		ospeed = nterm->_ospeed;
84	}
85
86	return oterm;
87}
88
89int
90del_curterm(TERMINAL *oterm)
91{
92
93	_ti_freeterm(oterm);
94	return 0;
95}
96