1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
/* $OpenBSD: lib_baudrate.c,v 1.2 1999/01/31 20:17:10 millert Exp $ */
/****************************************************************************
* Copyright (c) 1998 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
****************************************************************************/
/*
* lib_baudrate.c
*
*/
#include <curses.priv.h>
#include <term.h> /* cur_term, pad_char */
#include <termcap.h> /* ospeed */
MODULE_ID("$From: lib_baudrate.c,v 1.15 1999/01/31 03:05:25 tom Exp $")
/*
* int
* baudrate()
*
* Returns the current terminal's baud rate.
*
*/
struct speed {
speed_t s;
int sp;
};
static struct speed const speeds[] = {
{B0, 0},
{B50, 50},
{B75, 75},
{B110, 110},
{B134, 134},
{B150, 150},
{B200, 200},
{B300, 300},
{B600, 600},
{B1200, 1200},
{B1800, 1800},
{B2400, 2400},
{B4800, 4800},
{B9600, 9600},
#ifdef B19200
{B19200, 19200},
#else
#ifdef EXTA
{EXTA, 19200},
#endif
#endif
#ifdef B38400
{B38400, 38400},
#else
#ifdef EXTB
{EXTB, 38400},
#endif
#endif
#ifdef B57600
{B57600, 57600},
#endif
#ifdef B115200
{B115200, 115200},
#endif
#ifdef B230400
{B230400, 230400},
#endif
#ifdef B460800
{B460800, 460800},
#endif
};
int _nc_baudrate(int OSpeed)
{
static int last_OSpeed;
static int last_baudrate;
int result;
unsigned i;
if (OSpeed == last_OSpeed) {
result = last_baudrate;
} else {
result = ERR;
if (OSpeed >= 0) {
for (i = 0; i < SIZEOF(speeds); i++) {
if (speeds[i].s == (speed_t)OSpeed) {
result = speeds[i].sp;
break;
}
}
}
last_baudrate = result;
}
return (result);
}
int _nc_ospeed(int BaudRate)
{
speed_t result = 1;
unsigned i;
if (BaudRate >= 0) {
for (i = 0; i < SIZEOF(speeds); i++) {
if (speeds[i].sp == BaudRate) {
result = speeds[i].s;
break;
}
}
}
return (result);
}
int
baudrate(void)
{
int result;
T((T_CALLED("baudrate()")));
/*
* In debugging, allow the environment symbol to override when we're
* redirecting to a file, so we can construct repeatable test-cases
* that take into account costs that depend on baudrate.
*/
#ifdef TRACE
if (SP && !isatty(fileno(SP->_ofp))
&& getenv("BAUDRATE") != 0) {
int ret;
if ((ret = _nc_getenv_num("BAUDRATE")) <= 0)
ret = 9600;
ospeed = _nc_ospeed(ret);
returnCode(ret);
}
else
#endif
#ifdef TERMIOS
ospeed = cfgetospeed(&cur_term->Nttyb);
#else
ospeed = cur_term->Nttyb.sg_ospeed;
#endif
result = _nc_baudrate(ospeed);
if (cur_term != 0)
cur_term->_baudrate = result;
returnCode(result);
}
|
