Commit | Line | Data |
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d60d9f65 SS |
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 | |
f9267e15 | 11 | as published by the Free Software Foundation; either version 2, or |
d60d9f65 SS |
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, | |
f9267e15 | 22 | 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
d60d9f65 SS |
23 | #define READLINE_LIBRARY |
24 | ||
25 | #if defined (HAVE_CONFIG_H) | |
26 | # include <config.h> | |
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" | |
39 | ||
c862e87b | 40 | #if defined (GWINSZ_IN_SYS_IOCTL) |
d60d9f65 | 41 | # include <sys/ioctl.h> |
c862e87b | 42 | #endif /* GWINSZ_IN_SYS_IOCTL */ |
d60d9f65 SS |
43 | |
44 | #include "rltty.h" | |
45 | #include "readline.h" | |
f9267e15 | 46 | #include "rlprivate.h" |
d60d9f65 SS |
47 | |
48 | #if !defined (errno) | |
49 | extern int errno; | |
50 | #endif /* !errno */ | |
51 | ||
d60d9f65 SS |
52 | VFunction *rl_prep_term_function = rl_prep_terminal; |
53 | VFunction *rl_deprep_term_function = rl_deprep_terminal; | |
54 | ||
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 | ||
69 | static int sigint_blocked; | |
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 */ | |
f9267e15 | 93 | |
d60d9f65 SS |
94 | sigint_blocked = 1; |
95 | } | |
96 | ||
97 | /* Allow SIGINT to be delivered. */ | |
98 | static void | |
99 | release_sigint () | |
100 | { | |
f9267e15 | 101 | if (sigint_blocked == 0) |
d60d9f65 SS |
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 | ||
119 | /* **************************************************************** */ | |
120 | /* */ | |
121 | /* Saving and Restoring the TTY */ | |
122 | /* */ | |
123 | /* **************************************************************** */ | |
124 | ||
125 | /* Non-zero means that the terminal is in a prepped state. */ | |
126 | static int terminal_prepped; | |
127 | ||
f9267e15 EZ |
128 | static _RL_TTY_CHARS _rl_tty_chars, _rl_last_tty_chars; |
129 | ||
d60d9f65 SS |
130 | /* If non-zero, means that this process has called tcflow(fd, TCOOFF) |
131 | and output is suspended. */ | |
132 | #if defined (__ksr1__) | |
133 | static int ksrflow; | |
134 | #endif | |
135 | ||
d60d9f65 SS |
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 | { | |
f9267e15 | 142 | #if defined (TIOCGWINSZ) |
d60d9f65 SS |
143 | struct winsize w; |
144 | ||
145 | if (ioctl (tty, TIOCGWINSZ, &w) == 0) | |
146 | (void) ioctl (tty, TIOCSWINSZ, &w); | |
c862e87b | 147 | #endif /* TIOCGWINSZ */ |
f9267e15 | 148 | } |
d60d9f65 SS |
149 | |
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 | ||
f9267e15 EZ |
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; | |
193 | _rl_tty_chars.t_stop = tiop->tchars.t_stopc | |
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 | ||
d60d9f65 SS |
212 | static int |
213 | get_tty_settings (tty, tiop) | |
214 | int tty; | |
215 | TIOTYPE *tiop; | |
216 | { | |
217 | set_winsize (tty); | |
218 | ||
219 | tiop->flags = tiop->lflag = 0; | |
220 | ||
221 | ioctl (tty, TIOCGETP, &(tiop->sgttyb)); | |
222 | tiop->flags |= SGTTY_SET; | |
223 | ||
224 | #if defined (TIOCLGET) | |
225 | ioctl (tty, TIOCLGET, &(tiop->lflag)); | |
226 | tiop->flags |= LFLAG_SET; | |
227 | #endif | |
228 | ||
229 | #if defined (TIOCGETC) | |
230 | ioctl (tty, TIOCGETC, &(tiop->tchars)); | |
231 | tiop->flags |= TCHARS_SET; | |
232 | #endif | |
233 | ||
234 | #if defined (TIOCGLTC) | |
235 | ioctl (tty, TIOCGLTC, &(tiop->ltchars)); | |
236 | tiop->flags |= LTCHARS_SET; | |
237 | #endif | |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
242 | static int | |
243 | set_tty_settings (tty, tiop) | |
244 | int tty; | |
245 | TIOTYPE *tiop; | |
246 | { | |
247 | if (tiop->flags & SGTTY_SET) | |
248 | { | |
249 | ioctl (tty, TIOCSETN, &(tiop->sgttyb)); | |
250 | tiop->flags &= ~SGTTY_SET; | |
251 | } | |
252 | readline_echoing_p = 1; | |
253 | ||
254 | #if defined (TIOCLSET) | |
255 | if (tiop->flags & LFLAG_SET) | |
256 | { | |
257 | ioctl (tty, TIOCLSET, &(tiop->lflag)); | |
258 | tiop->flags &= ~LFLAG_SET; | |
259 | } | |
260 | #endif | |
261 | ||
262 | #if defined (TIOCSETC) | |
263 | if (tiop->flags & TCHARS_SET) | |
264 | { | |
265 | ioctl (tty, TIOCSETC, &(tiop->tchars)); | |
266 | tiop->flags &= ~TCHARS_SET; | |
267 | } | |
268 | #endif | |
269 | ||
270 | #if defined (TIOCSLTC) | |
271 | if (tiop->flags & LTCHARS_SET) | |
272 | { | |
273 | ioctl (tty, TIOCSLTC, &(tiop->ltchars)); | |
274 | tiop->flags &= ~LTCHARS_SET; | |
275 | } | |
276 | #endif | |
277 | ||
278 | return 0; | |
279 | } | |
280 | ||
281 | static void | |
282 | prepare_terminal_settings (meta_flag, otio, tiop) | |
283 | int meta_flag; | |
284 | TIOTYPE otio, *tiop; | |
285 | { | |
d60d9f65 SS |
286 | readline_echoing_p = (otio.sgttyb.sg_flags & ECHO); |
287 | ||
288 | /* Copy the original settings to the structure we're going to use for | |
289 | our settings. */ | |
290 | tiop->sgttyb = otio.sgttyb; | |
291 | tiop->lflag = otio.lflag; | |
292 | #if defined (TIOCGETC) | |
293 | tiop->tchars = otio.tchars; | |
294 | #endif | |
295 | #if defined (TIOCGLTC) | |
296 | tiop->ltchars = otio.ltchars; | |
297 | #endif | |
298 | tiop->flags = otio.flags; | |
299 | ||
300 | /* First, the basic settings to put us into character-at-a-time, no-echo | |
301 | input mode. */ | |
302 | tiop->sgttyb.sg_flags &= ~(ECHO | CRMOD); | |
303 | tiop->sgttyb.sg_flags |= CBREAK; | |
304 | ||
305 | /* If this terminal doesn't care how the 8th bit is used, then we can | |
306 | use it for the meta-key. If only one of even or odd parity is | |
307 | specified, then the terminal is using parity, and we cannot. */ | |
308 | #if !defined (ANYP) | |
309 | # define ANYP (EVENP | ODDP) | |
310 | #endif | |
311 | if (((otio.sgttyb.sg_flags & ANYP) == ANYP) || | |
312 | ((otio.sgttyb.sg_flags & ANYP) == 0)) | |
313 | { | |
314 | tiop->sgttyb.sg_flags |= ANYP; | |
315 | ||
316 | /* Hack on local mode flags if we can. */ | |
317 | #if defined (TIOCLGET) | |
318 | # if defined (LPASS8) | |
319 | tiop->lflag |= LPASS8; | |
320 | # endif /* LPASS8 */ | |
321 | #endif /* TIOCLGET */ | |
322 | } | |
323 | ||
324 | #if defined (TIOCGETC) | |
325 | # if defined (USE_XON_XOFF) | |
326 | /* Get rid of terminal output start and stop characters. */ | |
327 | tiop->tchars.t_stopc = -1; /* C-s */ | |
328 | tiop->tchars.t_startc = -1; /* C-q */ | |
329 | ||
330 | /* If there is an XON character, bind it to restart the output. */ | |
331 | if (otio.tchars.t_startc != -1) | |
332 | rl_bind_key (otio.tchars.t_startc, rl_restart_output); | |
333 | # endif /* USE_XON_XOFF */ | |
334 | ||
335 | /* If there is an EOF char, bind _rl_eof_char to it. */ | |
336 | if (otio.tchars.t_eofc != -1) | |
337 | _rl_eof_char = otio.tchars.t_eofc; | |
338 | ||
339 | # if defined (NO_KILL_INTR) | |
340 | /* Get rid of terminal-generated SIGQUIT and SIGINT. */ | |
341 | tiop->tchars.t_quitc = -1; /* C-\ */ | |
342 | tiop->tchars.t_intrc = -1; /* C-c */ | |
343 | # endif /* NO_KILL_INTR */ | |
344 | #endif /* TIOCGETC */ | |
345 | ||
346 | #if defined (TIOCGLTC) | |
347 | /* Make the interrupt keys go away. Just enough to make people happy. */ | |
348 | tiop->ltchars.t_dsuspc = -1; /* C-y */ | |
349 | tiop->ltchars.t_lnextc = -1; /* C-v */ | |
350 | #endif /* TIOCGLTC */ | |
d60d9f65 SS |
351 | } |
352 | ||
353 | #else /* !defined (NEW_TTY_DRIVER) */ | |
354 | ||
355 | #if !defined (VMIN) | |
356 | # define VMIN VEOF | |
357 | #endif | |
358 | ||
359 | #if !defined (VTIME) | |
360 | # define VTIME VEOL | |
361 | #endif | |
362 | ||
363 | #if defined (TERMIOS_TTY_DRIVER) | |
364 | # define TIOTYPE struct termios | |
365 | # define DRAIN_OUTPUT(fd) tcdrain (fd) | |
366 | # define GETATTR(tty, tiop) (tcgetattr (tty, tiop)) | |
367 | # ifdef M_UNIX | |
368 | # define SETATTR(tty, tiop) (tcsetattr (tty, TCSANOW, tiop)) | |
369 | # else | |
370 | # define SETATTR(tty, tiop) (tcsetattr (tty, TCSADRAIN, tiop)) | |
371 | # endif /* !M_UNIX */ | |
372 | #else | |
373 | # define TIOTYPE struct termio | |
374 | # define DRAIN_OUTPUT(fd) | |
375 | # define GETATTR(tty, tiop) (ioctl (tty, TCGETA, tiop)) | |
376 | # define SETATTR(tty, tiop) (ioctl (tty, TCSETA, tiop)) | |
377 | #endif /* !TERMIOS_TTY_DRIVER */ | |
378 | ||
379 | static TIOTYPE otio; | |
380 | ||
381 | #if defined (FLUSHO) | |
382 | # define OUTPUT_BEING_FLUSHED(tp) (tp->c_lflag & FLUSHO) | |
383 | #else | |
384 | # define OUTPUT_BEING_FLUSHED(tp) 0 | |
385 | #endif | |
386 | ||
f9267e15 EZ |
387 | static void |
388 | save_tty_chars (tiop) | |
389 | TIOTYPE *tiop; | |
390 | { | |
391 | _rl_last_tty_chars = _rl_tty_chars; | |
392 | ||
393 | _rl_tty_chars.t_eof = tiop->c_cc[VEOF]; | |
394 | _rl_tty_chars.t_eol = tiop->c_cc[VEOL]; | |
395 | #ifdef VEOL2 | |
396 | _rl_tty_chars.t_eol2 = tiop->c_cc[VEOL2]; | |
397 | #endif | |
398 | _rl_tty_chars.t_erase = tiop->c_cc[VERASE]; | |
399 | #ifdef VWERASE | |
400 | _rl_tty_chars.t_werase = tiop->c_cc[VWERASE]; | |
401 | #endif | |
402 | _rl_tty_chars.t_kill = tiop->c_cc[VKILL]; | |
403 | #ifdef VREPRINT | |
404 | _rl_tty_chars.t_reprint = tiop->c_cc[VREPRINT]; | |
405 | #endif | |
406 | _rl_tty_chars.t_intr = tiop->c_cc[VINTR]; | |
407 | _rl_tty_chars.t_quit = tiop->c_cc[VQUIT]; | |
408 | #ifdef VSUSP | |
409 | _rl_tty_chars.t_susp = tiop->c_cc[VSUSP]; | |
410 | #endif | |
411 | #ifdef VDSUSP | |
412 | _rl_tty_chars.t_dsusp = tiop->c_cc[VDSUSP]; | |
413 | #endif | |
414 | #ifdef VSTART | |
415 | _rl_tty_chars.t_start = tiop->c_cc[VSTART]; | |
416 | #endif | |
417 | #ifdef VSTOP | |
418 | _rl_tty_chars.t_stop = tiop->c_cc[VSTOP]; | |
419 | #endif | |
420 | #ifdef VLNEXT | |
421 | _rl_tty_chars.t_lnext = tiop->c_cc[VLNEXT]; | |
422 | #endif | |
423 | #ifdef VDISCARD | |
424 | _rl_tty_chars.t_flush = tiop->c_cc[VDISCARD]; | |
425 | #endif | |
426 | #ifdef VSTATUS | |
427 | _rl_tty_chars.t_status = tiop->c_cc[VSTATUS]; | |
428 | #endif | |
429 | } | |
430 | ||
431 | #if defined (_AIX) || defined (_AIX41) | |
432 | /* Currently this is only used on AIX */ | |
d60d9f65 SS |
433 | static void |
434 | rltty_warning (msg) | |
435 | char *msg; | |
436 | { | |
437 | fprintf (stderr, "readline: warning: %s\n", msg); | |
438 | } | |
f9267e15 | 439 | #endif |
d60d9f65 SS |
440 | |
441 | #if defined (_AIX) | |
442 | void | |
443 | setopost(tp) | |
444 | TIOTYPE *tp; | |
445 | { | |
446 | if ((tp->c_oflag & OPOST) == 0) | |
447 | { | |
448 | rltty_warning ("turning on OPOST for terminal\r"); | |
449 | tp->c_oflag |= OPOST|ONLCR; | |
450 | } | |
451 | } | |
452 | #endif | |
453 | ||
454 | static int | |
f9267e15 | 455 | _get_tty_settings (tty, tiop) |
d60d9f65 SS |
456 | int tty; |
457 | TIOTYPE *tiop; | |
458 | { | |
459 | int ioctl_ret; | |
c862e87b | 460 | |
d60d9f65 SS |
461 | while (1) |
462 | { | |
463 | ioctl_ret = GETATTR (tty, tiop); | |
464 | if (ioctl_ret < 0) | |
465 | { | |
466 | if (errno != EINTR) | |
467 | return -1; | |
468 | else | |
469 | continue; | |
470 | } | |
471 | if (OUTPUT_BEING_FLUSHED (tiop)) | |
472 | { | |
473 | #if defined (FLUSHO) && defined (_AIX41) | |
474 | rltty_warning ("turning off output flushing"); | |
475 | tiop->c_lflag &= ~FLUSHO; | |
476 | break; | |
477 | #else | |
478 | continue; | |
479 | #endif | |
480 | } | |
481 | break; | |
482 | } | |
483 | ||
f9267e15 EZ |
484 | return 0; |
485 | } | |
486 | ||
487 | static int | |
488 | get_tty_settings (tty, tiop) | |
489 | int tty; | |
490 | TIOTYPE *tiop; | |
491 | { | |
492 | set_winsize (tty); | |
493 | ||
494 | if (_get_tty_settings (tty, tiop) < 0) | |
495 | return -1; | |
496 | ||
d60d9f65 SS |
497 | #if defined (_AIX) |
498 | setopost(tiop); | |
499 | #endif | |
500 | ||
501 | return 0; | |
502 | } | |
503 | ||
504 | static int | |
f9267e15 | 505 | _set_tty_settings (tty, tiop) |
d60d9f65 SS |
506 | int tty; |
507 | TIOTYPE *tiop; | |
508 | { | |
509 | while (SETATTR (tty, tiop) < 0) | |
510 | { | |
511 | if (errno != EINTR) | |
512 | return -1; | |
513 | errno = 0; | |
514 | } | |
f9267e15 EZ |
515 | return 0; |
516 | } | |
d60d9f65 | 517 | |
f9267e15 EZ |
518 | static int |
519 | set_tty_settings (tty, tiop) | |
520 | int tty; | |
521 | TIOTYPE *tiop; | |
522 | { | |
523 | if (_set_tty_settings (tty, tiop) < 0) | |
524 | return -1; | |
525 | ||
d60d9f65 SS |
526 | #if 0 |
527 | ||
528 | #if defined (TERMIOS_TTY_DRIVER) | |
529 | # if defined (__ksr1__) | |
530 | if (ksrflow) | |
531 | { | |
532 | ksrflow = 0; | |
533 | tcflow (tty, TCOON); | |
534 | } | |
535 | # else /* !ksr1 */ | |
536 | tcflow (tty, TCOON); /* Simulate a ^Q. */ | |
537 | # endif /* !ksr1 */ | |
538 | #else | |
539 | ioctl (tty, TCXONC, 1); /* Simulate a ^Q. */ | |
540 | #endif /* !TERMIOS_TTY_DRIVER */ | |
541 | ||
f9267e15 | 542 | #endif /* 0 */ |
d60d9f65 SS |
543 | |
544 | return 0; | |
545 | } | |
546 | ||
547 | static void | |
548 | prepare_terminal_settings (meta_flag, otio, tiop) | |
549 | int meta_flag; | |
550 | TIOTYPE otio, *tiop; | |
551 | { | |
552 | readline_echoing_p = (otio.c_lflag & ECHO); | |
553 | ||
554 | tiop->c_lflag &= ~(ICANON | ECHO); | |
555 | ||
556 | if ((unsigned char) otio.c_cc[VEOF] != (unsigned char) _POSIX_VDISABLE) | |
557 | _rl_eof_char = otio.c_cc[VEOF]; | |
558 | ||
559 | #if defined (USE_XON_XOFF) | |
560 | #if defined (IXANY) | |
561 | tiop->c_iflag &= ~(IXON | IXOFF | IXANY); | |
562 | #else | |
563 | /* `strict' Posix systems do not define IXANY. */ | |
564 | tiop->c_iflag &= ~(IXON | IXOFF); | |
565 | #endif /* IXANY */ | |
566 | #endif /* USE_XON_XOFF */ | |
567 | ||
568 | /* Only turn this off if we are using all 8 bits. */ | |
569 | if (((tiop->c_cflag & CSIZE) == CS8) || meta_flag) | |
570 | tiop->c_iflag &= ~(ISTRIP | INPCK); | |
571 | ||
572 | /* Make sure we differentiate between CR and NL on input. */ | |
573 | tiop->c_iflag &= ~(ICRNL | INLCR); | |
574 | ||
575 | #if !defined (HANDLE_SIGNALS) | |
576 | tiop->c_lflag &= ~ISIG; | |
577 | #else | |
578 | tiop->c_lflag |= ISIG; | |
579 | #endif | |
580 | ||
581 | tiop->c_cc[VMIN] = 1; | |
582 | tiop->c_cc[VTIME] = 0; | |
583 | ||
584 | #if defined (FLUSHO) | |
585 | if (OUTPUT_BEING_FLUSHED (tiop)) | |
586 | { | |
587 | tiop->c_lflag &= ~FLUSHO; | |
588 | otio.c_lflag &= ~FLUSHO; | |
589 | } | |
590 | #endif | |
591 | ||
592 | /* Turn off characters that we need on Posix systems with job control, | |
593 | just to be sure. This includes ^Y and ^V. This should not really | |
594 | be necessary. */ | |
595 | #if defined (TERMIOS_TTY_DRIVER) && defined (_POSIX_VDISABLE) | |
596 | ||
597 | #if defined (VLNEXT) | |
598 | tiop->c_cc[VLNEXT] = _POSIX_VDISABLE; | |
599 | #endif | |
600 | ||
601 | #if defined (VDSUSP) | |
602 | tiop->c_cc[VDSUSP] = _POSIX_VDISABLE; | |
603 | #endif | |
604 | ||
605 | #endif /* TERMIOS_TTY_DRIVER && _POSIX_VDISABLE */ | |
606 | } | |
607 | #endif /* NEW_TTY_DRIVER */ | |
608 | ||
609 | /* Put the terminal in CBREAK mode so that we can detect key presses. */ | |
610 | void | |
611 | rl_prep_terminal (meta_flag) | |
612 | int meta_flag; | |
613 | { | |
d60d9f65 SS |
614 | int tty; |
615 | TIOTYPE tio; | |
616 | ||
617 | if (terminal_prepped) | |
618 | return; | |
619 | ||
620 | /* Try to keep this function from being INTerrupted. */ | |
621 | block_sigint (); | |
622 | ||
623 | tty = fileno (rl_instream); | |
624 | ||
625 | if (get_tty_settings (tty, &tio) < 0) | |
626 | { | |
627 | release_sigint (); | |
628 | return; | |
629 | } | |
630 | ||
631 | otio = tio; | |
632 | ||
f9267e15 EZ |
633 | save_tty_chars (&otio); |
634 | ||
d60d9f65 SS |
635 | prepare_terminal_settings (meta_flag, otio, &tio); |
636 | ||
637 | if (set_tty_settings (tty, &tio) < 0) | |
638 | { | |
639 | release_sigint (); | |
640 | return; | |
641 | } | |
642 | ||
643 | if (_rl_enable_keypad) | |
644 | _rl_control_keypad (1); | |
645 | ||
646 | fflush (rl_outstream); | |
647 | terminal_prepped = 1; | |
648 | ||
649 | release_sigint (); | |
d60d9f65 SS |
650 | } |
651 | ||
652 | /* Restore the terminal's normal settings and modes. */ | |
653 | void | |
654 | rl_deprep_terminal () | |
655 | { | |
d60d9f65 SS |
656 | int tty; |
657 | ||
658 | if (!terminal_prepped) | |
659 | return; | |
660 | ||
661 | /* Try to keep this function from being interrupted. */ | |
662 | block_sigint (); | |
663 | ||
664 | tty = fileno (rl_instream); | |
665 | ||
666 | if (_rl_enable_keypad) | |
667 | _rl_control_keypad (0); | |
668 | ||
669 | fflush (rl_outstream); | |
670 | ||
671 | if (set_tty_settings (tty, &otio) < 0) | |
672 | { | |
673 | release_sigint (); | |
674 | return; | |
675 | } | |
676 | ||
677 | terminal_prepped = 0; | |
678 | ||
679 | release_sigint (); | |
d60d9f65 SS |
680 | } |
681 | \f | |
682 | /* **************************************************************** */ | |
683 | /* */ | |
684 | /* Bogus Flow Control */ | |
685 | /* */ | |
686 | /* **************************************************************** */ | |
687 | ||
688 | int | |
689 | rl_restart_output (count, key) | |
690 | int count, key; | |
691 | { | |
692 | int fildes = fileno (rl_outstream); | |
693 | #if defined (TIOCSTART) | |
694 | #if defined (apollo) | |
695 | ioctl (&fildes, TIOCSTART, 0); | |
696 | #else | |
697 | ioctl (fildes, TIOCSTART, 0); | |
698 | #endif /* apollo */ | |
699 | ||
700 | #else /* !TIOCSTART */ | |
701 | # if defined (TERMIOS_TTY_DRIVER) | |
702 | # if defined (__ksr1__) | |
703 | if (ksrflow) | |
704 | { | |
705 | ksrflow = 0; | |
706 | tcflow (fildes, TCOON); | |
707 | } | |
708 | # else /* !ksr1 */ | |
709 | tcflow (fildes, TCOON); /* Simulate a ^Q. */ | |
710 | # endif /* !ksr1 */ | |
711 | # else /* !TERMIOS_TTY_DRIVER */ | |
712 | # if defined (TCXONC) | |
713 | ioctl (fildes, TCXONC, TCOON); | |
714 | # endif /* TCXONC */ | |
715 | # endif /* !TERMIOS_TTY_DRIVER */ | |
716 | #endif /* !TIOCSTART */ | |
717 | ||
718 | return 0; | |
719 | } | |
720 | ||
721 | int | |
722 | rl_stop_output (count, key) | |
723 | int count, key; | |
724 | { | |
725 | int fildes = fileno (rl_instream); | |
726 | ||
727 | #if defined (TIOCSTOP) | |
728 | # if defined (apollo) | |
729 | ioctl (&fildes, TIOCSTOP, 0); | |
730 | # else | |
731 | ioctl (fildes, TIOCSTOP, 0); | |
732 | # endif /* apollo */ | |
733 | #else /* !TIOCSTOP */ | |
734 | # if defined (TERMIOS_TTY_DRIVER) | |
735 | # if defined (__ksr1__) | |
736 | ksrflow = 1; | |
737 | # endif /* ksr1 */ | |
738 | tcflow (fildes, TCOOFF); | |
739 | # else | |
740 | # if defined (TCXONC) | |
741 | ioctl (fildes, TCXONC, TCOON); | |
742 | # endif /* TCXONC */ | |
743 | # endif /* !TERMIOS_TTY_DRIVER */ | |
744 | #endif /* !TIOCSTOP */ | |
745 | ||
746 | return 0; | |
747 | } | |
748 | ||
749 | /* **************************************************************** */ | |
750 | /* */ | |
751 | /* Default Key Bindings */ | |
752 | /* */ | |
753 | /* **************************************************************** */ | |
754 | void | |
755 | rltty_set_default_bindings (kmap) | |
756 | Keymap kmap; | |
757 | { | |
758 | TIOTYPE ttybuff; | |
759 | int tty = fileno (rl_instream); | |
760 | ||
761 | #if defined (NEW_TTY_DRIVER) | |
762 | ||
763 | #define SET_SPECIAL(sc, func) \ | |
764 | do \ | |
765 | { \ | |
766 | int ic; \ | |
767 | ic = sc; \ | |
768 | if (ic != -1 && kmap[ic].type == ISFUNC) \ | |
769 | kmap[ic].function = func; \ | |
770 | } \ | |
771 | while (0) | |
772 | ||
773 | if (get_tty_settings (tty, &ttybuff) == 0) | |
774 | { | |
775 | if (ttybuff.flags & SGTTY_SET) | |
776 | { | |
777 | SET_SPECIAL (ttybuff.sgttyb.sg_erase, rl_rubout); | |
778 | SET_SPECIAL (ttybuff.sgttyb.sg_kill, rl_unix_line_discard); | |
779 | } | |
780 | ||
781 | # if defined (TIOCGLTC) | |
782 | if (ttybuff.flags & LTCHARS_SET) | |
783 | { | |
784 | SET_SPECIAL (ttybuff.ltchars.t_werasc, rl_unix_word_rubout); | |
785 | SET_SPECIAL (ttybuff.ltchars.t_lnextc, rl_quoted_insert); | |
786 | } | |
787 | # endif /* TIOCGLTC */ | |
788 | } | |
789 | ||
790 | #else /* !NEW_TTY_DRIVER */ | |
791 | ||
792 | #define SET_SPECIAL(sc, func) \ | |
793 | do \ | |
794 | { \ | |
795 | unsigned char uc; \ | |
796 | uc = ttybuff.c_cc[sc]; \ | |
797 | if (uc != (unsigned char)_POSIX_VDISABLE && kmap[uc].type == ISFUNC) \ | |
798 | kmap[uc].function = func; \ | |
799 | } \ | |
800 | while (0) | |
801 | ||
802 | if (get_tty_settings (tty, &ttybuff) == 0) | |
803 | { | |
804 | SET_SPECIAL (VERASE, rl_rubout); | |
805 | SET_SPECIAL (VKILL, rl_unix_line_discard); | |
806 | ||
807 | # if defined (VLNEXT) && defined (TERMIOS_TTY_DRIVER) | |
808 | SET_SPECIAL (VLNEXT, rl_quoted_insert); | |
809 | # endif /* VLNEXT && TERMIOS_TTY_DRIVER */ | |
810 | ||
811 | # if defined (VWERASE) && defined (TERMIOS_TTY_DRIVER) | |
812 | SET_SPECIAL (VWERASE, rl_unix_word_rubout); | |
813 | # endif /* VWERASE && TERMIOS_TTY_DRIVER */ | |
814 | } | |
815 | #endif /* !NEW_TTY_DRIVER */ | |
816 | } | |
f9267e15 EZ |
817 | |
818 | #if defined (HANDLE_SIGNALS) | |
819 | ||
820 | #if defined (NEW_TTY_DRIVER) | |
821 | int | |
822 | _rl_disable_tty_signals () | |
823 | { | |
824 | return 0; | |
825 | } | |
826 | ||
827 | int | |
828 | _rl_restore_tty_signals () | |
829 | { | |
830 | return 0; | |
831 | } | |
832 | #else | |
833 | ||
834 | static TIOTYPE sigstty, nosigstty; | |
835 | static int tty_sigs_disabled = 0; | |
836 | ||
837 | int | |
838 | _rl_disable_tty_signals () | |
839 | { | |
840 | if (tty_sigs_disabled) | |
841 | return 0; | |
842 | ||
843 | if (_get_tty_settings (fileno (rl_instream), &sigstty) < 0) | |
844 | return -1; | |
845 | ||
846 | nosigstty = sigstty; | |
847 | ||
848 | nosigstty.c_lflag &= ~ISIG; | |
849 | ||
850 | if (_set_tty_settings (fileno (rl_instream), &nosigstty) < 0) | |
851 | return (_set_tty_settings (fileno (rl_instream), &sigstty)); | |
852 | ||
853 | tty_sigs_disabled = 1; | |
854 | return 0; | |
855 | } | |
856 | ||
857 | int | |
858 | _rl_restore_tty_signals () | |
859 | { | |
860 | if (tty_sigs_disabled == 0) | |
861 | return 0; | |
862 | ||
863 | return (_set_tty_settings (fileno (rl_instream), &sigstty)); | |
864 | } | |
865 | #endif /* !NEW_TTY_DRIVER */ | |
866 | ||
867 | #endif /* HANDLE_SIGNALS */ |