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Commit | Line | Data |
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726f6388 JA |
1 | /* rltty.c -- functions to prepare and restore the terminal for readline's |
2 | use. */ | |
3 | ||
4 | /* Copyright (C) 1992 Free Software Foundation, Inc. | |
5 | ||
6 | This file is part of the GNU Readline Library, a library for | |
7 | reading lines of text with interactive input and history editing. | |
8 | ||
9 | The GNU Readline Library is free software; you can redistribute it | |
10 | and/or modify it under the terms of the GNU General Public License | |
bb70624e | 11 | as published by the Free Software Foundation; either version 2, or |
726f6388 JA |
12 | (at your option) any later version. |
13 | ||
14 | The GNU Readline Library is distributed in the hope that it will be | |
15 | useful, but WITHOUT ANY WARRANTY; without even the implied warranty | |
16 | of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | The GNU General Public License is often shipped with GNU software, and | |
20 | is generally kept in a file called COPYING or LICENSE. If you do not | |
21 | have a copy of the license, write to the Free Software Foundation, | |
bb70624e | 22 | 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
726f6388 JA |
23 | #define READLINE_LIBRARY |
24 | ||
25 | #if defined (HAVE_CONFIG_H) | |
ccc6cda3 | 26 | # include <config.h> |
726f6388 JA |
27 | #endif |
28 | ||
29 | #include <sys/types.h> | |
30 | #include <signal.h> | |
31 | #include <errno.h> | |
32 | #include <stdio.h> | |
33 | ||
34 | #if defined (HAVE_UNISTD_H) | |
35 | # include <unistd.h> | |
36 | #endif /* HAVE_UNISTD_H */ | |
37 | ||
38 | #include "rldefs.h" | |
ccc6cda3 | 39 | |
b72432fd | 40 | #if defined (GWINSZ_IN_SYS_IOCTL) |
ccc6cda3 | 41 | # include <sys/ioctl.h> |
b72432fd | 42 | #endif /* GWINSZ_IN_SYS_IOCTL */ |
ccc6cda3 JA |
43 | |
44 | #include "rltty.h" | |
726f6388 | 45 | #include "readline.h" |
bb70624e | 46 | #include "rlprivate.h" |
726f6388 JA |
47 | |
48 | #if !defined (errno) | |
49 | extern int errno; | |
50 | #endif /* !errno */ | |
51 | ||
28ef6c31 JA |
52 | rl_vintfunc_t *rl_prep_term_function = rl_prep_terminal; |
53 | rl_voidfunc_t *rl_deprep_term_function = rl_deprep_terminal; | |
ccc6cda3 | 54 | |
726f6388 JA |
55 | /* **************************************************************** */ |
56 | /* */ | |
57 | /* Signal Management */ | |
58 | /* */ | |
59 | /* **************************************************************** */ | |
60 | ||
61 | #if defined (HAVE_POSIX_SIGNALS) | |
62 | static sigset_t sigint_set, sigint_oset; | |
63 | #else /* !HAVE_POSIX_SIGNALS */ | |
64 | # if defined (HAVE_BSD_SIGNALS) | |
65 | static int sigint_oldmask; | |
66 | # endif /* HAVE_BSD_SIGNALS */ | |
67 | #endif /* !HAVE_POSIX_SIGNALS */ | |
68 | ||
ccc6cda3 | 69 | static int sigint_blocked; |
726f6388 JA |
70 | |
71 | /* Cause SIGINT to not be delivered until the corresponding call to | |
72 | release_sigint(). */ | |
73 | static void | |
74 | block_sigint () | |
75 | { | |
76 | if (sigint_blocked) | |
77 | return; | |
78 | ||
79 | #if defined (HAVE_POSIX_SIGNALS) | |
80 | sigemptyset (&sigint_set); | |
81 | sigemptyset (&sigint_oset); | |
82 | sigaddset (&sigint_set, SIGINT); | |
83 | sigprocmask (SIG_BLOCK, &sigint_set, &sigint_oset); | |
84 | #else /* !HAVE_POSIX_SIGNALS */ | |
85 | # if defined (HAVE_BSD_SIGNALS) | |
86 | sigint_oldmask = sigblock (sigmask (SIGINT)); | |
87 | # else /* !HAVE_BSD_SIGNALS */ | |
88 | # if defined (HAVE_USG_SIGHOLD) | |
89 | sighold (SIGINT); | |
90 | # endif /* HAVE_USG_SIGHOLD */ | |
91 | # endif /* !HAVE_BSD_SIGNALS */ | |
92 | #endif /* !HAVE_POSIX_SIGNALS */ | |
bb70624e | 93 | |
726f6388 JA |
94 | sigint_blocked = 1; |
95 | } | |
96 | ||
97 | /* Allow SIGINT to be delivered. */ | |
98 | static void | |
99 | release_sigint () | |
100 | { | |
bb70624e | 101 | if (sigint_blocked == 0) |
726f6388 JA |
102 | return; |
103 | ||
104 | #if defined (HAVE_POSIX_SIGNALS) | |
105 | sigprocmask (SIG_SETMASK, &sigint_oset, (sigset_t *)NULL); | |
106 | #else | |
107 | # if defined (HAVE_BSD_SIGNALS) | |
108 | sigsetmask (sigint_oldmask); | |
109 | # else /* !HAVE_BSD_SIGNALS */ | |
110 | # if defined (HAVE_USG_SIGHOLD) | |
111 | sigrelse (SIGINT); | |
112 | # endif /* HAVE_USG_SIGHOLD */ | |
113 | # endif /* !HAVE_BSD_SIGNALS */ | |
114 | #endif /* !HAVE_POSIX_SIGNALS */ | |
115 | ||
116 | sigint_blocked = 0; | |
117 | } | |
118 | ||
726f6388 JA |
119 | /* **************************************************************** */ |
120 | /* */ | |
121 | /* Saving and Restoring the TTY */ | |
122 | /* */ | |
123 | /* **************************************************************** */ | |
124 | ||
125 | /* Non-zero means that the terminal is in a prepped state. */ | |
ccc6cda3 | 126 | static int terminal_prepped; |
726f6388 | 127 | |
bb70624e JA |
128 | static _RL_TTY_CHARS _rl_tty_chars, _rl_last_tty_chars; |
129 | ||
726f6388 JA |
130 | /* If non-zero, means that this process has called tcflow(fd, TCOOFF) |
131 | and output is suspended. */ | |
132 | #if defined (__ksr1__) | |
ccc6cda3 | 133 | static int ksrflow; |
726f6388 | 134 | #endif |
ccc6cda3 | 135 | |
ccc6cda3 JA |
136 | /* Dummy call to force a backgrounded readline to stop before it tries |
137 | to get the tty settings. */ | |
138 | static void | |
139 | set_winsize (tty) | |
140 | int tty; | |
141 | { | |
bb70624e | 142 | #if defined (TIOCGWINSZ) |
ccc6cda3 JA |
143 | struct winsize w; |
144 | ||
145 | if (ioctl (tty, TIOCGWINSZ, &w) == 0) | |
146 | (void) ioctl (tty, TIOCSWINSZ, &w); | |
b72432fd | 147 | #endif /* TIOCGWINSZ */ |
bb70624e | 148 | } |
ccc6cda3 | 149 | |
726f6388 JA |
150 | #if defined (NEW_TTY_DRIVER) |
151 | ||
152 | /* Values for the `flags' field of a struct bsdtty. This tells which | |
153 | elements of the struct bsdtty have been fetched from the system and | |
154 | are valid. */ | |
155 | #define SGTTY_SET 0x01 | |
156 | #define LFLAG_SET 0x02 | |
157 | #define TCHARS_SET 0x04 | |
158 | #define LTCHARS_SET 0x08 | |
159 | ||
160 | struct bsdtty { | |
161 | struct sgttyb sgttyb; /* Basic BSD tty driver information. */ | |
162 | int lflag; /* Local mode flags, like LPASS8. */ | |
163 | #if defined (TIOCGETC) | |
164 | struct tchars tchars; /* Terminal special characters, including ^S and ^Q. */ | |
165 | #endif | |
166 | #if defined (TIOCGLTC) | |
167 | struct ltchars ltchars; /* 4.2 BSD editing characters */ | |
168 | #endif | |
169 | int flags; /* Bitmap saying which parts of the struct are valid. */ | |
170 | }; | |
171 | ||
172 | #define TIOTYPE struct bsdtty | |
173 | ||
174 | static TIOTYPE otio; | |
175 | ||
bb70624e JA |
176 | static void |
177 | save_tty_chars (tiop) | |
178 | TIOTYPE *tiop; | |
179 | { | |
180 | _rl_last_tty_chars = _rl_tty_chars; | |
181 | ||
182 | if (tiop->flags & SGTTY_SET) | |
183 | { | |
184 | _rl_tty_chars.t_erase = tiop->sgttyb.sg_erase; | |
185 | _rl_tty_chars.t_kill = tiop->sgttyb.sg_kill; | |
186 | } | |
187 | ||
188 | if (tiop->flags & TCHARS_SET) | |
189 | { | |
190 | _rl_tty_chars.t_intr = tiop->tchars.t_intrc; | |
191 | _rl_tty_chars.t_quit = tiop->tchars.t_quitc; | |
192 | _rl_tty_chars.t_start = tiop->tchars.t_startc; | |
28ef6c31 | 193 | _rl_tty_chars.t_stop = tiop->tchars.t_stopc; |
bb70624e JA |
194 | _rl_tty_chars.t_eof = tiop->tchars.t_eofc; |
195 | _rl_tty_chars.t_eol = '\n'; | |
196 | _rl_tty_chars.t_eol2 = tiop->tchars.t_brkc; | |
197 | } | |
198 | ||
199 | if (tiop->flags & LTCHARS_SET) | |
200 | { | |
201 | _rl_tty_chars.t_susp = tiop->ltchars.t_suspc; | |
202 | _rl_tty_chars.t_dsusp = tiop->ltchars.t_dsuspc; | |
203 | _rl_tty_chars.t_reprint = tiop->ltchars.t_rprntc; | |
204 | _rl_tty_chars.t_flush = tiop->ltchars.t_flushc; | |
205 | _rl_tty_chars.t_werase = tiop->ltchars.t_werasc; | |
206 | _rl_tty_chars.t_lnext = tiop->ltchars.t_lnextc; | |
207 | } | |
208 | ||
209 | _rl_tty_chars.t_status = -1; | |
210 | } | |
211 | ||
726f6388 JA |
212 | static int |
213 | get_tty_settings (tty, tiop) | |
214 | int tty; | |
215 | TIOTYPE *tiop; | |
216 | { | |
ccc6cda3 | 217 | set_winsize (tty); |
726f6388 JA |
218 | |
219 | tiop->flags = tiop->lflag = 0; | |
220 | ||
28ef6c31 JA |
221 | if (ioctl (tty, TIOCGETP, &(tiop->sgttyb)) < 0) |
222 | return -1; | |
726f6388 JA |
223 | tiop->flags |= SGTTY_SET; |
224 | ||
225 | #if defined (TIOCLGET) | |
28ef6c31 JA |
226 | if (ioctl (tty, TIOCLGET, &(tiop->lflag)) == 0) |
227 | tiop->flags |= LFLAG_SET; | |
726f6388 JA |
228 | #endif |
229 | ||
230 | #if defined (TIOCGETC) | |
28ef6c31 JA |
231 | if (ioctl (tty, TIOCGETC, &(tiop->tchars)) == 0) |
232 | tiop->flags |= TCHARS_SET; | |
726f6388 JA |
233 | #endif |
234 | ||
235 | #if defined (TIOCGLTC) | |
28ef6c31 JA |
236 | if (ioctl (tty, TIOCGLTC, &(tiop->ltchars)) == 0) |
237 | tiop->flags |= LTCHARS_SET; | |
726f6388 JA |
238 | #endif |
239 | ||
240 | return 0; | |
241 | } | |
242 | ||
ccc6cda3 | 243 | static int |
726f6388 JA |
244 | set_tty_settings (tty, tiop) |
245 | int tty; | |
246 | TIOTYPE *tiop; | |
247 | { | |
248 | if (tiop->flags & SGTTY_SET) | |
249 | { | |
250 | ioctl (tty, TIOCSETN, &(tiop->sgttyb)); | |
251 | tiop->flags &= ~SGTTY_SET; | |
252 | } | |
253 | readline_echoing_p = 1; | |
254 | ||
255 | #if defined (TIOCLSET) | |
256 | if (tiop->flags & LFLAG_SET) | |
257 | { | |
258 | ioctl (tty, TIOCLSET, &(tiop->lflag)); | |
259 | tiop->flags &= ~LFLAG_SET; | |
260 | } | |
261 | #endif | |
262 | ||
263 | #if defined (TIOCSETC) | |
264 | if (tiop->flags & TCHARS_SET) | |
265 | { | |
266 | ioctl (tty, TIOCSETC, &(tiop->tchars)); | |
267 | tiop->flags &= ~TCHARS_SET; | |
268 | } | |
269 | #endif | |
270 | ||
271 | #if defined (TIOCSLTC) | |
272 | if (tiop->flags & LTCHARS_SET) | |
273 | { | |
274 | ioctl (tty, TIOCSLTC, &(tiop->ltchars)); | |
275 | tiop->flags &= ~LTCHARS_SET; | |
276 | } | |
277 | #endif | |
278 | ||
279 | return 0; | |
280 | } | |
281 | ||
282 | static void | |
28ef6c31 | 283 | prepare_terminal_settings (meta_flag, oldtio, tiop) |
726f6388 | 284 | int meta_flag; |
28ef6c31 | 285 | TIOTYPE oldtio, *tiop; |
726f6388 | 286 | { |
28ef6c31 | 287 | readline_echoing_p = (oldtio.sgttyb.sg_flags & ECHO); |
726f6388 JA |
288 | |
289 | /* Copy the original settings to the structure we're going to use for | |
290 | our settings. */ | |
28ef6c31 JA |
291 | tiop->sgttyb = oldtio.sgttyb; |
292 | tiop->lflag = oldtio.lflag; | |
726f6388 | 293 | #if defined (TIOCGETC) |
28ef6c31 | 294 | tiop->tchars = oldtio.tchars; |
726f6388 JA |
295 | #endif |
296 | #if defined (TIOCGLTC) | |
28ef6c31 | 297 | tiop->ltchars = oldtio.ltchars; |
726f6388 | 298 | #endif |
28ef6c31 | 299 | tiop->flags = oldtio.flags; |
726f6388 JA |
300 | |
301 | /* First, the basic settings to put us into character-at-a-time, no-echo | |
302 | input mode. */ | |
303 | tiop->sgttyb.sg_flags &= ~(ECHO | CRMOD); | |
304 | tiop->sgttyb.sg_flags |= CBREAK; | |
305 | ||
306 | /* If this terminal doesn't care how the 8th bit is used, then we can | |
307 | use it for the meta-key. If only one of even or odd parity is | |
308 | specified, then the terminal is using parity, and we cannot. */ | |
309 | #if !defined (ANYP) | |
310 | # define ANYP (EVENP | ODDP) | |
311 | #endif | |
28ef6c31 JA |
312 | if (((oldtio.sgttyb.sg_flags & ANYP) == ANYP) || |
313 | ((oldtio.sgttyb.sg_flags & ANYP) == 0)) | |
726f6388 JA |
314 | { |
315 | tiop->sgttyb.sg_flags |= ANYP; | |
316 | ||
317 | /* Hack on local mode flags if we can. */ | |
318 | #if defined (TIOCLGET) | |
319 | # if defined (LPASS8) | |
320 | tiop->lflag |= LPASS8; | |
321 | # endif /* LPASS8 */ | |
322 | #endif /* TIOCLGET */ | |
323 | } | |
324 | ||
325 | #if defined (TIOCGETC) | |
326 | # if defined (USE_XON_XOFF) | |
327 | /* Get rid of terminal output start and stop characters. */ | |
328 | tiop->tchars.t_stopc = -1; /* C-s */ | |
329 | tiop->tchars.t_startc = -1; /* C-q */ | |
330 | ||
331 | /* If there is an XON character, bind it to restart the output. */ | |
28ef6c31 JA |
332 | if (oldtio.tchars.t_startc != -1) |
333 | rl_bind_key (oldtio.tchars.t_startc, rl_restart_output); | |
726f6388 JA |
334 | # endif /* USE_XON_XOFF */ |
335 | ||
336 | /* If there is an EOF char, bind _rl_eof_char to it. */ | |
28ef6c31 JA |
337 | if (oldtio.tchars.t_eofc != -1) |
338 | _rl_eof_char = oldtio.tchars.t_eofc; | |
726f6388 JA |
339 | |
340 | # if defined (NO_KILL_INTR) | |
341 | /* Get rid of terminal-generated SIGQUIT and SIGINT. */ | |
342 | tiop->tchars.t_quitc = -1; /* C-\ */ | |
343 | tiop->tchars.t_intrc = -1; /* C-c */ | |
344 | # endif /* NO_KILL_INTR */ | |
345 | #endif /* TIOCGETC */ | |
346 | ||
347 | #if defined (TIOCGLTC) | |
348 | /* Make the interrupt keys go away. Just enough to make people happy. */ | |
349 | tiop->ltchars.t_dsuspc = -1; /* C-y */ | |
350 | tiop->ltchars.t_lnextc = -1; /* C-v */ | |
351 | #endif /* TIOCGLTC */ | |
726f6388 JA |
352 | } |
353 | ||
354 | #else /* !defined (NEW_TTY_DRIVER) */ | |
355 | ||
356 | #if !defined (VMIN) | |
357 | # define VMIN VEOF | |
358 | #endif | |
359 | ||
360 | #if !defined (VTIME) | |
361 | # define VTIME VEOL | |
362 | #endif | |
363 | ||
364 | #if defined (TERMIOS_TTY_DRIVER) | |
365 | # define TIOTYPE struct termios | |
366 | # define DRAIN_OUTPUT(fd) tcdrain (fd) | |
367 | # define GETATTR(tty, tiop) (tcgetattr (tty, tiop)) | |
ccc6cda3 JA |
368 | # ifdef M_UNIX |
369 | # define SETATTR(tty, tiop) (tcsetattr (tty, TCSANOW, tiop)) | |
370 | # else | |
371 | # define SETATTR(tty, tiop) (tcsetattr (tty, TCSADRAIN, tiop)) | |
372 | # endif /* !M_UNIX */ | |
726f6388 JA |
373 | #else |
374 | # define TIOTYPE struct termio | |
375 | # define DRAIN_OUTPUT(fd) | |
376 | # define GETATTR(tty, tiop) (ioctl (tty, TCGETA, tiop)) | |
28ef6c31 | 377 | # define SETATTR(tty, tiop) (ioctl (tty, TCSETAW, tiop)) |
726f6388 JA |
378 | #endif /* !TERMIOS_TTY_DRIVER */ |
379 | ||
380 | static TIOTYPE otio; | |
381 | ||
382 | #if defined (FLUSHO) | |
383 | # define OUTPUT_BEING_FLUSHED(tp) (tp->c_lflag & FLUSHO) | |
384 | #else | |
385 | # define OUTPUT_BEING_FLUSHED(tp) 0 | |
386 | #endif | |
387 | ||
bb70624e JA |
388 | static void |
389 | save_tty_chars (tiop) | |
390 | TIOTYPE *tiop; | |
391 | { | |
392 | _rl_last_tty_chars = _rl_tty_chars; | |
393 | ||
394 | _rl_tty_chars.t_eof = tiop->c_cc[VEOF]; | |
395 | _rl_tty_chars.t_eol = tiop->c_cc[VEOL]; | |
396 | #ifdef VEOL2 | |
397 | _rl_tty_chars.t_eol2 = tiop->c_cc[VEOL2]; | |
398 | #endif | |
399 | _rl_tty_chars.t_erase = tiop->c_cc[VERASE]; | |
400 | #ifdef VWERASE | |
401 | _rl_tty_chars.t_werase = tiop->c_cc[VWERASE]; | |
402 | #endif | |
403 | _rl_tty_chars.t_kill = tiop->c_cc[VKILL]; | |
404 | #ifdef VREPRINT | |
405 | _rl_tty_chars.t_reprint = tiop->c_cc[VREPRINT]; | |
406 | #endif | |
407 | _rl_tty_chars.t_intr = tiop->c_cc[VINTR]; | |
408 | _rl_tty_chars.t_quit = tiop->c_cc[VQUIT]; | |
409 | #ifdef VSUSP | |
410 | _rl_tty_chars.t_susp = tiop->c_cc[VSUSP]; | |
411 | #endif | |
412 | #ifdef VDSUSP | |
413 | _rl_tty_chars.t_dsusp = tiop->c_cc[VDSUSP]; | |
414 | #endif | |
415 | #ifdef VSTART | |
416 | _rl_tty_chars.t_start = tiop->c_cc[VSTART]; | |
417 | #endif | |
418 | #ifdef VSTOP | |
419 | _rl_tty_chars.t_stop = tiop->c_cc[VSTOP]; | |
420 | #endif | |
421 | #ifdef VLNEXT | |
422 | _rl_tty_chars.t_lnext = tiop->c_cc[VLNEXT]; | |
423 | #endif | |
424 | #ifdef VDISCARD | |
425 | _rl_tty_chars.t_flush = tiop->c_cc[VDISCARD]; | |
426 | #endif | |
427 | #ifdef VSTATUS | |
428 | _rl_tty_chars.t_status = tiop->c_cc[VSTATUS]; | |
429 | #endif | |
430 | } | |
431 | ||
432 | #if defined (_AIX) || defined (_AIX41) | |
433 | /* Currently this is only used on AIX */ | |
ccc6cda3 JA |
434 | static void |
435 | rltty_warning (msg) | |
436 | char *msg; | |
437 | { | |
438 | fprintf (stderr, "readline: warning: %s\n", msg); | |
439 | } | |
bb70624e | 440 | #endif |
ccc6cda3 JA |
441 | |
442 | #if defined (_AIX) | |
443 | void | |
444 | setopost(tp) | |
445 | TIOTYPE *tp; | |
446 | { | |
447 | if ((tp->c_oflag & OPOST) == 0) | |
448 | { | |
449 | rltty_warning ("turning on OPOST for terminal\r"); | |
450 | tp->c_oflag |= OPOST|ONLCR; | |
451 | } | |
452 | } | |
453 | #endif | |
454 | ||
726f6388 | 455 | static int |
bb70624e | 456 | _get_tty_settings (tty, tiop) |
726f6388 JA |
457 | int tty; |
458 | TIOTYPE *tiop; | |
459 | { | |
460 | int ioctl_ret; | |
b72432fd | 461 | |
ccc6cda3 | 462 | while (1) |
726f6388 | 463 | { |
ccc6cda3 JA |
464 | ioctl_ret = GETATTR (tty, tiop); |
465 | if (ioctl_ret < 0) | |
466 | { | |
467 | if (errno != EINTR) | |
468 | return -1; | |
469 | else | |
470 | continue; | |
471 | } | |
726f6388 | 472 | if (OUTPUT_BEING_FLUSHED (tiop)) |
ccc6cda3 JA |
473 | { |
474 | #if defined (FLUSHO) && defined (_AIX41) | |
475 | rltty_warning ("turning off output flushing"); | |
476 | tiop->c_lflag &= ~FLUSHO; | |
477 | break; | |
478 | #else | |
479 | continue; | |
480 | #endif | |
481 | } | |
482 | break; | |
726f6388 | 483 | } |
ccc6cda3 | 484 | |
bb70624e JA |
485 | return 0; |
486 | } | |
487 | ||
488 | static int | |
489 | get_tty_settings (tty, tiop) | |
490 | int tty; | |
491 | TIOTYPE *tiop; | |
492 | { | |
493 | set_winsize (tty); | |
494 | ||
495 | if (_get_tty_settings (tty, tiop) < 0) | |
496 | return -1; | |
497 | ||
ccc6cda3 JA |
498 | #if defined (_AIX) |
499 | setopost(tiop); | |
500 | #endif | |
501 | ||
726f6388 JA |
502 | return 0; |
503 | } | |
504 | ||
505 | static int | |
bb70624e | 506 | _set_tty_settings (tty, tiop) |
726f6388 JA |
507 | int tty; |
508 | TIOTYPE *tiop; | |
509 | { | |
510 | while (SETATTR (tty, tiop) < 0) | |
511 | { | |
512 | if (errno != EINTR) | |
513 | return -1; | |
514 | errno = 0; | |
515 | } | |
bb70624e JA |
516 | return 0; |
517 | } | |
726f6388 | 518 | |
bb70624e JA |
519 | static int |
520 | set_tty_settings (tty, tiop) | |
521 | int tty; | |
522 | TIOTYPE *tiop; | |
523 | { | |
524 | if (_set_tty_settings (tty, tiop) < 0) | |
525 | return -1; | |
526 | ||
726f6388 JA |
527 | #if 0 |
528 | ||
529 | #if defined (TERMIOS_TTY_DRIVER) | |
530 | # if defined (__ksr1__) | |
531 | if (ksrflow) | |
532 | { | |
533 | ksrflow = 0; | |
534 | tcflow (tty, TCOON); | |
535 | } | |
536 | # else /* !ksr1 */ | |
537 | tcflow (tty, TCOON); /* Simulate a ^Q. */ | |
538 | # endif /* !ksr1 */ | |
539 | #else | |
540 | ioctl (tty, TCXONC, 1); /* Simulate a ^Q. */ | |
541 | #endif /* !TERMIOS_TTY_DRIVER */ | |
542 | ||
bb70624e | 543 | #endif /* 0 */ |
726f6388 JA |
544 | |
545 | return 0; | |
546 | } | |
547 | ||
548 | static void | |
28ef6c31 | 549 | prepare_terminal_settings (meta_flag, oldtio, tiop) |
726f6388 | 550 | int meta_flag; |
28ef6c31 | 551 | TIOTYPE oldtio, *tiop; |
726f6388 | 552 | { |
28ef6c31 | 553 | readline_echoing_p = (oldtio.c_lflag & ECHO); |
726f6388 JA |
554 | |
555 | tiop->c_lflag &= ~(ICANON | ECHO); | |
556 | ||
28ef6c31 JA |
557 | if ((unsigned char) oldtio.c_cc[VEOF] != (unsigned char) _POSIX_VDISABLE) |
558 | _rl_eof_char = oldtio.c_cc[VEOF]; | |
726f6388 JA |
559 | |
560 | #if defined (USE_XON_XOFF) | |
561 | #if defined (IXANY) | |
562 | tiop->c_iflag &= ~(IXON | IXOFF | IXANY); | |
563 | #else | |
564 | /* `strict' Posix systems do not define IXANY. */ | |
565 | tiop->c_iflag &= ~(IXON | IXOFF); | |
566 | #endif /* IXANY */ | |
567 | #endif /* USE_XON_XOFF */ | |
568 | ||
569 | /* Only turn this off if we are using all 8 bits. */ | |
570 | if (((tiop->c_cflag & CSIZE) == CS8) || meta_flag) | |
571 | tiop->c_iflag &= ~(ISTRIP | INPCK); | |
572 | ||
573 | /* Make sure we differentiate between CR and NL on input. */ | |
574 | tiop->c_iflag &= ~(ICRNL | INLCR); | |
575 | ||
576 | #if !defined (HANDLE_SIGNALS) | |
577 | tiop->c_lflag &= ~ISIG; | |
578 | #else | |
579 | tiop->c_lflag |= ISIG; | |
580 | #endif | |
581 | ||
582 | tiop->c_cc[VMIN] = 1; | |
583 | tiop->c_cc[VTIME] = 0; | |
584 | ||
585 | #if defined (FLUSHO) | |
586 | if (OUTPUT_BEING_FLUSHED (tiop)) | |
587 | { | |
588 | tiop->c_lflag &= ~FLUSHO; | |
28ef6c31 | 589 | oldtio.c_lflag &= ~FLUSHO; |
726f6388 JA |
590 | } |
591 | #endif | |
592 | ||
593 | /* Turn off characters that we need on Posix systems with job control, | |
594 | just to be sure. This includes ^Y and ^V. This should not really | |
595 | be necessary. */ | |
596 | #if defined (TERMIOS_TTY_DRIVER) && defined (_POSIX_VDISABLE) | |
597 | ||
598 | #if defined (VLNEXT) | |
599 | tiop->c_cc[VLNEXT] = _POSIX_VDISABLE; | |
600 | #endif | |
601 | ||
602 | #if defined (VDSUSP) | |
603 | tiop->c_cc[VDSUSP] = _POSIX_VDISABLE; | |
604 | #endif | |
605 | ||
606 | #endif /* TERMIOS_TTY_DRIVER && _POSIX_VDISABLE */ | |
607 | } | |
608 | #endif /* NEW_TTY_DRIVER */ | |
609 | ||
610 | /* Put the terminal in CBREAK mode so that we can detect key presses. */ | |
611 | void | |
612 | rl_prep_terminal (meta_flag) | |
613 | int meta_flag; | |
614 | { | |
ccc6cda3 | 615 | int tty; |
726f6388 JA |
616 | TIOTYPE tio; |
617 | ||
618 | if (terminal_prepped) | |
619 | return; | |
620 | ||
621 | /* Try to keep this function from being INTerrupted. */ | |
622 | block_sigint (); | |
623 | ||
ccc6cda3 JA |
624 | tty = fileno (rl_instream); |
625 | ||
726f6388 JA |
626 | if (get_tty_settings (tty, &tio) < 0) |
627 | { | |
628 | release_sigint (); | |
629 | return; | |
630 | } | |
631 | ||
632 | otio = tio; | |
633 | ||
bb70624e JA |
634 | save_tty_chars (&otio); |
635 | ||
726f6388 JA |
636 | prepare_terminal_settings (meta_flag, otio, &tio); |
637 | ||
638 | if (set_tty_settings (tty, &tio) < 0) | |
639 | { | |
640 | release_sigint (); | |
641 | return; | |
642 | } | |
643 | ||
ccc6cda3 JA |
644 | if (_rl_enable_keypad) |
645 | _rl_control_keypad (1); | |
646 | ||
726f6388 JA |
647 | fflush (rl_outstream); |
648 | terminal_prepped = 1; | |
28ef6c31 | 649 | RL_SETSTATE(RL_STATE_TERMPREPPED); |
726f6388 JA |
650 | |
651 | release_sigint (); | |
726f6388 JA |
652 | } |
653 | ||
654 | /* Restore the terminal's normal settings and modes. */ | |
655 | void | |
656 | rl_deprep_terminal () | |
657 | { | |
ccc6cda3 | 658 | int tty; |
726f6388 JA |
659 | |
660 | if (!terminal_prepped) | |
661 | return; | |
662 | ||
ccc6cda3 | 663 | /* Try to keep this function from being interrupted. */ |
726f6388 JA |
664 | block_sigint (); |
665 | ||
ccc6cda3 JA |
666 | tty = fileno (rl_instream); |
667 | ||
668 | if (_rl_enable_keypad) | |
669 | _rl_control_keypad (0); | |
670 | ||
726f6388 JA |
671 | fflush (rl_outstream); |
672 | ||
673 | if (set_tty_settings (tty, &otio) < 0) | |
674 | { | |
675 | release_sigint (); | |
676 | return; | |
677 | } | |
678 | ||
679 | terminal_prepped = 0; | |
28ef6c31 | 680 | RL_UNSETSTATE(RL_STATE_TERMPREPPED); |
726f6388 JA |
681 | |
682 | release_sigint (); | |
726f6388 JA |
683 | } |
684 | \f | |
685 | /* **************************************************************** */ | |
686 | /* */ | |
687 | /* Bogus Flow Control */ | |
688 | /* */ | |
689 | /* **************************************************************** */ | |
690 | ||
ccc6cda3 | 691 | int |
726f6388 JA |
692 | rl_restart_output (count, key) |
693 | int count, key; | |
694 | { | |
695 | int fildes = fileno (rl_outstream); | |
696 | #if defined (TIOCSTART) | |
697 | #if defined (apollo) | |
698 | ioctl (&fildes, TIOCSTART, 0); | |
699 | #else | |
700 | ioctl (fildes, TIOCSTART, 0); | |
701 | #endif /* apollo */ | |
702 | ||
703 | #else /* !TIOCSTART */ | |
704 | # if defined (TERMIOS_TTY_DRIVER) | |
705 | # if defined (__ksr1__) | |
706 | if (ksrflow) | |
707 | { | |
708 | ksrflow = 0; | |
709 | tcflow (fildes, TCOON); | |
710 | } | |
711 | # else /* !ksr1 */ | |
712 | tcflow (fildes, TCOON); /* Simulate a ^Q. */ | |
713 | # endif /* !ksr1 */ | |
714 | # else /* !TERMIOS_TTY_DRIVER */ | |
715 | # if defined (TCXONC) | |
716 | ioctl (fildes, TCXONC, TCOON); | |
717 | # endif /* TCXONC */ | |
718 | # endif /* !TERMIOS_TTY_DRIVER */ | |
719 | #endif /* !TIOCSTART */ | |
720 | ||
721 | return 0; | |
722 | } | |
723 | ||
ccc6cda3 | 724 | int |
726f6388 JA |
725 | rl_stop_output (count, key) |
726 | int count, key; | |
727 | { | |
728 | int fildes = fileno (rl_instream); | |
729 | ||
730 | #if defined (TIOCSTOP) | |
731 | # if defined (apollo) | |
732 | ioctl (&fildes, TIOCSTOP, 0); | |
733 | # else | |
734 | ioctl (fildes, TIOCSTOP, 0); | |
735 | # endif /* apollo */ | |
736 | #else /* !TIOCSTOP */ | |
737 | # if defined (TERMIOS_TTY_DRIVER) | |
738 | # if defined (__ksr1__) | |
739 | ksrflow = 1; | |
740 | # endif /* ksr1 */ | |
741 | tcflow (fildes, TCOOFF); | |
742 | # else | |
743 | # if defined (TCXONC) | |
744 | ioctl (fildes, TCXONC, TCOON); | |
745 | # endif /* TCXONC */ | |
746 | # endif /* !TERMIOS_TTY_DRIVER */ | |
747 | #endif /* !TIOCSTOP */ | |
748 | ||
749 | return 0; | |
750 | } | |
ccc6cda3 | 751 | |
726f6388 JA |
752 | /* **************************************************************** */ |
753 | /* */ | |
754 | /* Default Key Bindings */ | |
755 | /* */ | |
756 | /* **************************************************************** */ | |
28ef6c31 JA |
757 | |
758 | /* Set the system's default editing characters to their readline equivalents | |
759 | in KMAP. Should be static, now that we have rl_tty_set_default_bindings. */ | |
726f6388 JA |
760 | void |
761 | rltty_set_default_bindings (kmap) | |
762 | Keymap kmap; | |
763 | { | |
764 | TIOTYPE ttybuff; | |
765 | int tty = fileno (rl_instream); | |
766 | ||
767 | #if defined (NEW_TTY_DRIVER) | |
768 | ||
769 | #define SET_SPECIAL(sc, func) \ | |
770 | do \ | |
771 | { \ | |
772 | int ic; \ | |
773 | ic = sc; \ | |
774 | if (ic != -1 && kmap[ic].type == ISFUNC) \ | |
775 | kmap[ic].function = func; \ | |
776 | } \ | |
777 | while (0) | |
778 | ||
779 | if (get_tty_settings (tty, &ttybuff) == 0) | |
780 | { | |
781 | if (ttybuff.flags & SGTTY_SET) | |
782 | { | |
783 | SET_SPECIAL (ttybuff.sgttyb.sg_erase, rl_rubout); | |
784 | SET_SPECIAL (ttybuff.sgttyb.sg_kill, rl_unix_line_discard); | |
785 | } | |
786 | ||
787 | # if defined (TIOCGLTC) | |
788 | if (ttybuff.flags & LTCHARS_SET) | |
789 | { | |
790 | SET_SPECIAL (ttybuff.ltchars.t_werasc, rl_unix_word_rubout); | |
791 | SET_SPECIAL (ttybuff.ltchars.t_lnextc, rl_quoted_insert); | |
792 | } | |
793 | # endif /* TIOCGLTC */ | |
794 | } | |
795 | ||
796 | #else /* !NEW_TTY_DRIVER */ | |
797 | ||
798 | #define SET_SPECIAL(sc, func) \ | |
799 | do \ | |
800 | { \ | |
801 | unsigned char uc; \ | |
802 | uc = ttybuff.c_cc[sc]; \ | |
803 | if (uc != (unsigned char)_POSIX_VDISABLE && kmap[uc].type == ISFUNC) \ | |
804 | kmap[uc].function = func; \ | |
805 | } \ | |
806 | while (0) | |
807 | ||
808 | if (get_tty_settings (tty, &ttybuff) == 0) | |
809 | { | |
810 | SET_SPECIAL (VERASE, rl_rubout); | |
811 | SET_SPECIAL (VKILL, rl_unix_line_discard); | |
812 | ||
813 | # if defined (VLNEXT) && defined (TERMIOS_TTY_DRIVER) | |
814 | SET_SPECIAL (VLNEXT, rl_quoted_insert); | |
815 | # endif /* VLNEXT && TERMIOS_TTY_DRIVER */ | |
816 | ||
817 | # if defined (VWERASE) && defined (TERMIOS_TTY_DRIVER) | |
818 | SET_SPECIAL (VWERASE, rl_unix_word_rubout); | |
819 | # endif /* VWERASE && TERMIOS_TTY_DRIVER */ | |
820 | } | |
821 | #endif /* !NEW_TTY_DRIVER */ | |
822 | } | |
bb70624e | 823 | |
28ef6c31 JA |
824 | /* New public way to set the system default editing chars to their readline |
825 | equivalents. */ | |
826 | void | |
827 | rl_tty_set_default_bindings (kmap) | |
828 | Keymap kmap; | |
829 | { | |
830 | rltty_set_default_bindings (kmap); | |
831 | } | |
832 | ||
bb70624e JA |
833 | #if defined (HANDLE_SIGNALS) |
834 | ||
835 | #if defined (NEW_TTY_DRIVER) | |
836 | int | |
837 | _rl_disable_tty_signals () | |
838 | { | |
839 | return 0; | |
840 | } | |
841 | ||
842 | int | |
843 | _rl_restore_tty_signals () | |
844 | { | |
845 | return 0; | |
846 | } | |
847 | #else | |
848 | ||
849 | static TIOTYPE sigstty, nosigstty; | |
850 | static int tty_sigs_disabled = 0; | |
851 | ||
852 | int | |
853 | _rl_disable_tty_signals () | |
854 | { | |
855 | if (tty_sigs_disabled) | |
856 | return 0; | |
857 | ||
858 | if (_get_tty_settings (fileno (rl_instream), &sigstty) < 0) | |
859 | return -1; | |
860 | ||
861 | nosigstty = sigstty; | |
862 | ||
863 | nosigstty.c_lflag &= ~ISIG; | |
864 | ||
865 | if (_set_tty_settings (fileno (rl_instream), &nosigstty) < 0) | |
866 | return (_set_tty_settings (fileno (rl_instream), &sigstty)); | |
867 | ||
868 | tty_sigs_disabled = 1; | |
869 | return 0; | |
870 | } | |
871 | ||
872 | int | |
873 | _rl_restore_tty_signals () | |
874 | { | |
875 | if (tty_sigs_disabled == 0) | |
876 | return 0; | |
877 | ||
878 | return (_set_tty_settings (fileno (rl_instream), &sigstty)); | |
879 | } | |
880 | #endif /* !NEW_TTY_DRIVER */ | |
881 | ||
882 | #endif /* HANDLE_SIGNALS */ |