1 /****************************************************************************
2 * Copyright (c) 1998-2001,2002 Free Software Foundation, Inc. *
3 * *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
11 * *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
14 * *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
22 * *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
26 * authorization. *
27 ****************************************************************************/
28
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 * and: Thomas E. Dickey 1998 on *
33 ****************************************************************************/
34
35 /*
36 * raw.c
37 *
38 * Routines:
39 * raw()
40 * cbreak()
41 * noraw()
42 * nocbreak()
43 * qiflush()
44 * noqiflush()
45 * intrflush()
46 *
47 */
48
49 #include <curses.priv.h>
50 #include <term.h> /* cur_term */
51
52 MODULE_ID("$Id: lib_raw.c,v 1.13 2002/07/06 22:00:45 tom Exp $")
53
54 #if SVR4_TERMIO && !defined(_POSIX_SOURCE)
55 #define _POSIX_SOURCE
56 #endif
57
58 #if HAVE_SYS_TERMIO_H
59 #include <sys/termio.h> /* needed for ISC */
60 #endif
61
62 #ifdef __EMX__
63 #include <io.h>
64 #define _nc_setmode(mode) setmode(SP->_ifd, mode)
65 #else
66 #define _nc_setmode(mode) /* nothing */
67 #endif
68
69 #define COOKED_INPUT (IXON|BRKINT|PARMRK)
70
71 #ifdef TRACE
72 #define BEFORE(N) if (_nc_tracing&TRACE_BITS) _tracef("%s before bits: %s", N, _nc_tracebits())
73 #define AFTER(N) if (_nc_tracing&TRACE_BITS) _tracef("%s after bits: %s", N, _nc_tracebits())
74 #else
75 #define BEFORE(s)
76 #define AFTER(s)
77 #endif /* TRACE */
78
NCURSES_EXPORT(int)79 NCURSES_EXPORT(int)
80 raw(void)
81 {
82 int result = ERR;
83
84 T((T_CALLED("raw()")));
85
86 if (SP != 0 && cur_term != 0) {
87 TTY buf;
88
89 BEFORE("raw");
90 _nc_setmode(O_BINARY);
91
92 buf = cur_term->Nttyb;
93 #ifdef TERMIOS
94 buf.c_lflag &= ~(ICANON | ISIG | IEXTEN);
95 buf.c_iflag &= ~(COOKED_INPUT);
96 buf.c_cc[VMIN] = 1;
97 buf.c_cc[VTIME] = 0;
98 #else
99 buf.sg_flags |= RAW;
100 #endif
101 if ((result = _nc_set_tty_mode(&buf)) == OK) {
102 SP->_raw = TRUE;
103 SP->_cbreak = 1;
104 cur_term->Nttyb = buf;
105 }
106 AFTER("raw");
107 }
108 returnCode(result);
109 }
110
111 NCURSES_EXPORT(int)
cbreak(void)112 cbreak(void)
113 {
114 int result = ERR;
115
116 T((T_CALLED("cbreak()")));
117
118 if (SP != 0 && cur_term != 0) {
119 TTY buf;
120
121 BEFORE("cbreak");
122 _nc_setmode(O_BINARY);
123
124 buf = cur_term->Nttyb;
125 #ifdef TERMIOS
126 buf.c_lflag &= ~ICANON;
127 buf.c_iflag &= ~ICRNL;
128 buf.c_lflag |= ISIG;
129 buf.c_cc[VMIN] = 1;
130 buf.c_cc[VTIME] = 0;
131 #else
132 buf.sg_flags |= CBREAK;
133 #endif
134 if ((result = _nc_set_tty_mode(&buf)) == OK) {
135 SP->_cbreak = 1;
136 cur_term->Nttyb = buf;
137 }
138 AFTER("cbreak");
139 }
140 returnCode(result);
141 }
142
143 /*
144 * Note:
145 * this implementation may be wrong. See the comment under intrflush().
146 */
147 NCURSES_EXPORT(void)
qiflush(void)148 qiflush(void)
149 {
150 int result = ERR;
151
152 T((T_CALLED("qiflush()")));
153
154 if (cur_term != 0) {
155 TTY buf;
156
157 BEFORE("qiflush");
158 buf = cur_term->Nttyb;
159 #ifdef TERMIOS
160 buf.c_lflag &= ~(NOFLSH);
161 result = _nc_set_tty_mode(&buf);
162 #else
163 /* FIXME */
164 #endif
165 if (result == OK)
166 cur_term->Nttyb = buf;
167 AFTER("qiflush");
168 }
169 returnVoid;
170 }
171
172 NCURSES_EXPORT(int)
noraw(void)173 noraw(void)
174 {
175 int result = ERR;
176
177 T((T_CALLED("noraw()")));
178
179 if (SP != 0 && cur_term != 0) {
180 TTY buf;
181
182 BEFORE("noraw");
183 _nc_setmode(O_TEXT);
184
185 buf = cur_term->Nttyb;
186 #ifdef TERMIOS
187 buf.c_lflag |= ISIG | ICANON |
188 (cur_term->Ottyb.c_lflag & IEXTEN);
189 buf.c_iflag |= COOKED_INPUT;
190 #else
191 buf.sg_flags &= ~(RAW | CBREAK);
192 #endif
193 if ((result = _nc_set_tty_mode(&buf)) == OK) {
194 SP->_raw = FALSE;
195 SP->_cbreak = 0;
196 cur_term->Nttyb = buf;
197 }
198 AFTER("noraw");
199 }
200 returnCode(result);
201 }
202
203 NCURSES_EXPORT(int)
nocbreak(void)204 nocbreak(void)
205 {
206 int result = ERR;
207
208 T((T_CALLED("nocbreak()")));
209
210 if (SP != 0 && cur_term != 0) {
211 TTY buf;
212
213 BEFORE("nocbreak");
214 _nc_setmode(O_TEXT);
215
216 buf = cur_term->Nttyb;
217 #ifdef TERMIOS
218 buf.c_lflag |= ICANON;
219 buf.c_iflag |= ICRNL;
220 #else
221 buf.sg_flags &= ~CBREAK;
222 #endif
223 if ((result = _nc_set_tty_mode(&buf)) == OK) {
224 SP->_cbreak = 0;
225 cur_term->Nttyb = buf;
226 }
227 AFTER("nocbreak");
228 }
229 returnCode(result);
230 }
231
232 /*
233 * Note:
234 * this implementation may be wrong. See the comment under intrflush().
235 */
236 NCURSES_EXPORT(void)
noqiflush(void)237 noqiflush(void)
238 {
239 int result = ERR;
240
241 T((T_CALLED("noqiflush()")));
242
243 if (cur_term != 0) {
244 TTY buf;
245
246 BEFORE("noqiflush");
247 buf = cur_term->Nttyb;
248 #ifdef TERMIOS
249 buf.c_lflag |= NOFLSH;
250 result = _nc_set_tty_mode(&buf);
251 #else
252 /* FIXME */
253 #endif
254 if (result == OK) {
255 cur_term->Nttyb = buf;
256 }
257 AFTER("noqiflush");
258 }
259 returnVoid;
260 }
261
262 /*
263 * This call does the same thing as the qiflush()/noqiflush() pair. We know
264 * for certain that SVr3 intrflush() tweaks the NOFLSH bit; on the other hand,
265 * the match (in the SVr4 man pages) between the language describing NOFLSH in
266 * termio(7) and the language describing qiflush()/noqiflush() in
267 * curs_inopts(3x) is too exact to be coincidence.
268 */
269 NCURSES_EXPORT(int)
intrflush(WINDOW * win GCC_UNUSED,bool flag)270 intrflush(WINDOW *win GCC_UNUSED, bool flag)
271 {
272 int result = ERR;
273
274 T((T_CALLED("intrflush(%d)"), flag));
275
276 if (cur_term != 0) {
277 TTY buf;
278
279 BEFORE("intrflush");
280 buf = cur_term->Nttyb;
281 #ifdef TERMIOS
282 if (flag)
283 buf.c_lflag &= ~(NOFLSH);
284 else
285 buf.c_lflag |= (NOFLSH);
286 result = _nc_set_tty_mode(&buf);
287 #else
288 /* FIXME */
289 #endif
290 if (result == OK) {
291 cur_term->Nttyb = buf;
292 }
293 AFTER("intrflush");
294 }
295 returnCode(result);
296 }
297