Commit | Line | Data |
---|---|---|
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 | |
1b17e766 | 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, | |
1b17e766 | 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" | |
1b17e766 | 46 | #include "rlprivate.h" |
d60d9f65 SS |
47 | |
48 | #if !defined (errno) | |
49 | extern int errno; | |
50 | #endif /* !errno */ | |
51 | ||
9255ee31 EZ |
52 | rl_vintfunc_t *rl_prep_term_function = rl_prep_terminal; |
53 | rl_voidfunc_t *rl_deprep_term_function = rl_deprep_terminal; | |
54 | ||
55 | static void block_sigint PARAMS((void)); | |
56 | static void release_sigint PARAMS((void)); | |
57 | ||
58 | static void set_winsize PARAMS((int)); | |
d60d9f65 SS |
59 | |
60 | /* **************************************************************** */ | |
61 | /* */ | |
62 | /* Signal Management */ | |
63 | /* */ | |
64 | /* **************************************************************** */ | |
65 | ||
66 | #if defined (HAVE_POSIX_SIGNALS) | |
67 | static sigset_t sigint_set, sigint_oset; | |
68 | #else /* !HAVE_POSIX_SIGNALS */ | |
69 | # if defined (HAVE_BSD_SIGNALS) | |
70 | static int sigint_oldmask; | |
71 | # endif /* HAVE_BSD_SIGNALS */ | |
72 | #endif /* !HAVE_POSIX_SIGNALS */ | |
73 | ||
74 | static int sigint_blocked; | |
75 | ||
76 | /* Cause SIGINT to not be delivered until the corresponding call to | |
77 | release_sigint(). */ | |
78 | static void | |
79 | block_sigint () | |
80 | { | |
81 | if (sigint_blocked) | |
82 | return; | |
83 | ||
84 | #if defined (HAVE_POSIX_SIGNALS) | |
85 | sigemptyset (&sigint_set); | |
86 | sigemptyset (&sigint_oset); | |
87 | sigaddset (&sigint_set, SIGINT); | |
88 | sigprocmask (SIG_BLOCK, &sigint_set, &sigint_oset); | |
89 | #else /* !HAVE_POSIX_SIGNALS */ | |
90 | # if defined (HAVE_BSD_SIGNALS) | |
91 | sigint_oldmask = sigblock (sigmask (SIGINT)); | |
92 | # else /* !HAVE_BSD_SIGNALS */ | |
93 | # if defined (HAVE_USG_SIGHOLD) | |
94 | sighold (SIGINT); | |
95 | # endif /* HAVE_USG_SIGHOLD */ | |
96 | # endif /* !HAVE_BSD_SIGNALS */ | |
97 | #endif /* !HAVE_POSIX_SIGNALS */ | |
1b17e766 | 98 | |
d60d9f65 SS |
99 | sigint_blocked = 1; |
100 | } | |
101 | ||
102 | /* Allow SIGINT to be delivered. */ | |
103 | static void | |
104 | release_sigint () | |
105 | { | |
1b17e766 | 106 | if (sigint_blocked == 0) |
d60d9f65 SS |
107 | return; |
108 | ||
109 | #if defined (HAVE_POSIX_SIGNALS) | |
110 | sigprocmask (SIG_SETMASK, &sigint_oset, (sigset_t *)NULL); | |
111 | #else | |
112 | # if defined (HAVE_BSD_SIGNALS) | |
113 | sigsetmask (sigint_oldmask); | |
114 | # else /* !HAVE_BSD_SIGNALS */ | |
115 | # if defined (HAVE_USG_SIGHOLD) | |
116 | sigrelse (SIGINT); | |
117 | # endif /* HAVE_USG_SIGHOLD */ | |
118 | # endif /* !HAVE_BSD_SIGNALS */ | |
119 | #endif /* !HAVE_POSIX_SIGNALS */ | |
120 | ||
121 | sigint_blocked = 0; | |
122 | } | |
123 | ||
124 | /* **************************************************************** */ | |
125 | /* */ | |
126 | /* Saving and Restoring the TTY */ | |
127 | /* */ | |
128 | /* **************************************************************** */ | |
129 | ||
130 | /* Non-zero means that the terminal is in a prepped state. */ | |
131 | static int terminal_prepped; | |
132 | ||
1b17e766 EZ |
133 | static _RL_TTY_CHARS _rl_tty_chars, _rl_last_tty_chars; |
134 | ||
d60d9f65 SS |
135 | /* If non-zero, means that this process has called tcflow(fd, TCOOFF) |
136 | and output is suspended. */ | |
137 | #if defined (__ksr1__) | |
138 | static int ksrflow; | |
139 | #endif | |
140 | ||
d60d9f65 SS |
141 | /* Dummy call to force a backgrounded readline to stop before it tries |
142 | to get the tty settings. */ | |
143 | static void | |
144 | set_winsize (tty) | |
145 | int tty; | |
146 | { | |
1b17e766 | 147 | #if defined (TIOCGWINSZ) |
d60d9f65 SS |
148 | struct winsize w; |
149 | ||
150 | if (ioctl (tty, TIOCGWINSZ, &w) == 0) | |
151 | (void) ioctl (tty, TIOCSWINSZ, &w); | |
c862e87b | 152 | #endif /* TIOCGWINSZ */ |
1b17e766 | 153 | } |
d60d9f65 SS |
154 | |
155 | #if defined (NEW_TTY_DRIVER) | |
156 | ||
157 | /* Values for the `flags' field of a struct bsdtty. This tells which | |
158 | elements of the struct bsdtty have been fetched from the system and | |
159 | are valid. */ | |
160 | #define SGTTY_SET 0x01 | |
161 | #define LFLAG_SET 0x02 | |
162 | #define TCHARS_SET 0x04 | |
163 | #define LTCHARS_SET 0x08 | |
164 | ||
165 | struct bsdtty { | |
166 | struct sgttyb sgttyb; /* Basic BSD tty driver information. */ | |
167 | int lflag; /* Local mode flags, like LPASS8. */ | |
168 | #if defined (TIOCGETC) | |
169 | struct tchars tchars; /* Terminal special characters, including ^S and ^Q. */ | |
170 | #endif | |
171 | #if defined (TIOCGLTC) | |
172 | struct ltchars ltchars; /* 4.2 BSD editing characters */ | |
173 | #endif | |
174 | int flags; /* Bitmap saying which parts of the struct are valid. */ | |
175 | }; | |
176 | ||
177 | #define TIOTYPE struct bsdtty | |
178 | ||
179 | static TIOTYPE otio; | |
180 | ||
9255ee31 EZ |
181 | static void save_tty_chars PARAMS((TIOTYPE *)); |
182 | static int _get_tty_settings PARAMS((int, TIOTYPE *)); | |
183 | static int get_tty_settings PARAMS((int, TIOTYPE *)); | |
184 | static int _set_tty_settings PARAMS((int, TIOTYPE *)); | |
185 | static int set_tty_settings PARAMS((int, TIOTYPE *)); | |
186 | ||
187 | static void prepare_terminal_settings PARAMS((int, TIOTYPE, TIOTYPE *)); | |
188 | ||
1b17e766 EZ |
189 | static void |
190 | save_tty_chars (tiop) | |
191 | TIOTYPE *tiop; | |
192 | { | |
193 | _rl_last_tty_chars = _rl_tty_chars; | |
194 | ||
195 | if (tiop->flags & SGTTY_SET) | |
196 | { | |
197 | _rl_tty_chars.t_erase = tiop->sgttyb.sg_erase; | |
198 | _rl_tty_chars.t_kill = tiop->sgttyb.sg_kill; | |
199 | } | |
200 | ||
201 | if (tiop->flags & TCHARS_SET) | |
202 | { | |
203 | _rl_tty_chars.t_intr = tiop->tchars.t_intrc; | |
204 | _rl_tty_chars.t_quit = tiop->tchars.t_quitc; | |
205 | _rl_tty_chars.t_start = tiop->tchars.t_startc; | |
5844f845 | 206 | _rl_tty_chars.t_stop = tiop->tchars.t_stopc; |
1b17e766 EZ |
207 | _rl_tty_chars.t_eof = tiop->tchars.t_eofc; |
208 | _rl_tty_chars.t_eol = '\n'; | |
209 | _rl_tty_chars.t_eol2 = tiop->tchars.t_brkc; | |
210 | } | |
211 | ||
212 | if (tiop->flags & LTCHARS_SET) | |
213 | { | |
214 | _rl_tty_chars.t_susp = tiop->ltchars.t_suspc; | |
215 | _rl_tty_chars.t_dsusp = tiop->ltchars.t_dsuspc; | |
216 | _rl_tty_chars.t_reprint = tiop->ltchars.t_rprntc; | |
217 | _rl_tty_chars.t_flush = tiop->ltchars.t_flushc; | |
218 | _rl_tty_chars.t_werase = tiop->ltchars.t_werasc; | |
219 | _rl_tty_chars.t_lnext = tiop->ltchars.t_lnextc; | |
220 | } | |
221 | ||
222 | _rl_tty_chars.t_status = -1; | |
223 | } | |
224 | ||
d60d9f65 SS |
225 | static int |
226 | get_tty_settings (tty, tiop) | |
227 | int tty; | |
228 | TIOTYPE *tiop; | |
229 | { | |
d1857004 | 230 | #if defined (TIOCGWINSZ) |
d60d9f65 | 231 | set_winsize (tty); |
d1857004 | 232 | #endif |
d60d9f65 SS |
233 | |
234 | tiop->flags = tiop->lflag = 0; | |
235 | ||
9255ee31 EZ |
236 | if (ioctl (tty, TIOCGETP, &(tiop->sgttyb)) < 0) |
237 | return -1; | |
d60d9f65 SS |
238 | tiop->flags |= SGTTY_SET; |
239 | ||
240 | #if defined (TIOCLGET) | |
9255ee31 EZ |
241 | if (ioctl (tty, TIOCLGET, &(tiop->lflag)) == 0) |
242 | tiop->flags |= LFLAG_SET; | |
d60d9f65 SS |
243 | #endif |
244 | ||
245 | #if defined (TIOCGETC) | |
9255ee31 EZ |
246 | if (ioctl (tty, TIOCGETC, &(tiop->tchars)) == 0) |
247 | tiop->flags |= TCHARS_SET; | |
d60d9f65 SS |
248 | #endif |
249 | ||
250 | #if defined (TIOCGLTC) | |
9255ee31 EZ |
251 | if (ioctl (tty, TIOCGLTC, &(tiop->ltchars)) == 0) |
252 | tiop->flags |= LTCHARS_SET; | |
d60d9f65 SS |
253 | #endif |
254 | ||
255 | return 0; | |
256 | } | |
257 | ||
258 | static int | |
259 | set_tty_settings (tty, tiop) | |
260 | int tty; | |
261 | TIOTYPE *tiop; | |
262 | { | |
263 | if (tiop->flags & SGTTY_SET) | |
264 | { | |
265 | ioctl (tty, TIOCSETN, &(tiop->sgttyb)); | |
266 | tiop->flags &= ~SGTTY_SET; | |
267 | } | |
268 | readline_echoing_p = 1; | |
269 | ||
270 | #if defined (TIOCLSET) | |
271 | if (tiop->flags & LFLAG_SET) | |
272 | { | |
273 | ioctl (tty, TIOCLSET, &(tiop->lflag)); | |
274 | tiop->flags &= ~LFLAG_SET; | |
275 | } | |
276 | #endif | |
277 | ||
278 | #if defined (TIOCSETC) | |
279 | if (tiop->flags & TCHARS_SET) | |
280 | { | |
281 | ioctl (tty, TIOCSETC, &(tiop->tchars)); | |
282 | tiop->flags &= ~TCHARS_SET; | |
283 | } | |
284 | #endif | |
285 | ||
286 | #if defined (TIOCSLTC) | |
287 | if (tiop->flags & LTCHARS_SET) | |
288 | { | |
289 | ioctl (tty, TIOCSLTC, &(tiop->ltchars)); | |
290 | tiop->flags &= ~LTCHARS_SET; | |
291 | } | |
292 | #endif | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
297 | static void | |
9255ee31 | 298 | prepare_terminal_settings (meta_flag, oldtio, tiop) |
d60d9f65 | 299 | int meta_flag; |
9255ee31 | 300 | TIOTYPE oldtio, *tiop; |
d60d9f65 | 301 | { |
9255ee31 | 302 | readline_echoing_p = (oldtio.sgttyb.sg_flags & ECHO); |
d60d9f65 SS |
303 | |
304 | /* Copy the original settings to the structure we're going to use for | |
305 | our settings. */ | |
9255ee31 EZ |
306 | tiop->sgttyb = oldtio.sgttyb; |
307 | tiop->lflag = oldtio.lflag; | |
d60d9f65 | 308 | #if defined (TIOCGETC) |
9255ee31 | 309 | tiop->tchars = oldtio.tchars; |
d60d9f65 SS |
310 | #endif |
311 | #if defined (TIOCGLTC) | |
9255ee31 | 312 | tiop->ltchars = oldtio.ltchars; |
d60d9f65 | 313 | #endif |
9255ee31 | 314 | tiop->flags = oldtio.flags; |
d60d9f65 SS |
315 | |
316 | /* First, the basic settings to put us into character-at-a-time, no-echo | |
317 | input mode. */ | |
318 | tiop->sgttyb.sg_flags &= ~(ECHO | CRMOD); | |
319 | tiop->sgttyb.sg_flags |= CBREAK; | |
320 | ||
321 | /* If this terminal doesn't care how the 8th bit is used, then we can | |
322 | use it for the meta-key. If only one of even or odd parity is | |
323 | specified, then the terminal is using parity, and we cannot. */ | |
324 | #if !defined (ANYP) | |
325 | # define ANYP (EVENP | ODDP) | |
326 | #endif | |
9255ee31 EZ |
327 | if (((oldtio.sgttyb.sg_flags & ANYP) == ANYP) || |
328 | ((oldtio.sgttyb.sg_flags & ANYP) == 0)) | |
d60d9f65 SS |
329 | { |
330 | tiop->sgttyb.sg_flags |= ANYP; | |
331 | ||
332 | /* Hack on local mode flags if we can. */ | |
333 | #if defined (TIOCLGET) | |
334 | # if defined (LPASS8) | |
335 | tiop->lflag |= LPASS8; | |
336 | # endif /* LPASS8 */ | |
337 | #endif /* TIOCLGET */ | |
338 | } | |
339 | ||
340 | #if defined (TIOCGETC) | |
341 | # if defined (USE_XON_XOFF) | |
342 | /* Get rid of terminal output start and stop characters. */ | |
343 | tiop->tchars.t_stopc = -1; /* C-s */ | |
344 | tiop->tchars.t_startc = -1; /* C-q */ | |
345 | ||
346 | /* If there is an XON character, bind it to restart the output. */ | |
9255ee31 EZ |
347 | if (oldtio.tchars.t_startc != -1) |
348 | rl_bind_key (oldtio.tchars.t_startc, rl_restart_output); | |
d60d9f65 SS |
349 | # endif /* USE_XON_XOFF */ |
350 | ||
351 | /* If there is an EOF char, bind _rl_eof_char to it. */ | |
9255ee31 EZ |
352 | if (oldtio.tchars.t_eofc != -1) |
353 | _rl_eof_char = oldtio.tchars.t_eofc; | |
d60d9f65 SS |
354 | |
355 | # if defined (NO_KILL_INTR) | |
356 | /* Get rid of terminal-generated SIGQUIT and SIGINT. */ | |
357 | tiop->tchars.t_quitc = -1; /* C-\ */ | |
358 | tiop->tchars.t_intrc = -1; /* C-c */ | |
359 | # endif /* NO_KILL_INTR */ | |
360 | #endif /* TIOCGETC */ | |
361 | ||
362 | #if defined (TIOCGLTC) | |
363 | /* Make the interrupt keys go away. Just enough to make people happy. */ | |
364 | tiop->ltchars.t_dsuspc = -1; /* C-y */ | |
365 | tiop->ltchars.t_lnextc = -1; /* C-v */ | |
366 | #endif /* TIOCGLTC */ | |
d60d9f65 SS |
367 | } |
368 | ||
369 | #else /* !defined (NEW_TTY_DRIVER) */ | |
370 | ||
371 | #if !defined (VMIN) | |
372 | # define VMIN VEOF | |
373 | #endif | |
374 | ||
375 | #if !defined (VTIME) | |
376 | # define VTIME VEOL | |
377 | #endif | |
378 | ||
379 | #if defined (TERMIOS_TTY_DRIVER) | |
380 | # define TIOTYPE struct termios | |
381 | # define DRAIN_OUTPUT(fd) tcdrain (fd) | |
382 | # define GETATTR(tty, tiop) (tcgetattr (tty, tiop)) | |
383 | # ifdef M_UNIX | |
384 | # define SETATTR(tty, tiop) (tcsetattr (tty, TCSANOW, tiop)) | |
385 | # else | |
386 | # define SETATTR(tty, tiop) (tcsetattr (tty, TCSADRAIN, tiop)) | |
387 | # endif /* !M_UNIX */ | |
388 | #else | |
389 | # define TIOTYPE struct termio | |
390 | # define DRAIN_OUTPUT(fd) | |
391 | # define GETATTR(tty, tiop) (ioctl (tty, TCGETA, tiop)) | |
9255ee31 | 392 | # define SETATTR(tty, tiop) (ioctl (tty, TCSETAW, tiop)) |
d60d9f65 SS |
393 | #endif /* !TERMIOS_TTY_DRIVER */ |
394 | ||
395 | static TIOTYPE otio; | |
396 | ||
9255ee31 EZ |
397 | static void save_tty_chars PARAMS((TIOTYPE *)); |
398 | static int _get_tty_settings PARAMS((int, TIOTYPE *)); | |
399 | static int get_tty_settings PARAMS((int, TIOTYPE *)); | |
400 | static int _set_tty_settings PARAMS((int, TIOTYPE *)); | |
401 | static int set_tty_settings PARAMS((int, TIOTYPE *)); | |
402 | ||
403 | static void prepare_terminal_settings PARAMS((int, TIOTYPE, TIOTYPE *)); | |
404 | ||
d60d9f65 SS |
405 | #if defined (FLUSHO) |
406 | # define OUTPUT_BEING_FLUSHED(tp) (tp->c_lflag & FLUSHO) | |
407 | #else | |
408 | # define OUTPUT_BEING_FLUSHED(tp) 0 | |
409 | #endif | |
410 | ||
1b17e766 EZ |
411 | static void |
412 | save_tty_chars (tiop) | |
413 | TIOTYPE *tiop; | |
414 | { | |
415 | _rl_last_tty_chars = _rl_tty_chars; | |
416 | ||
417 | _rl_tty_chars.t_eof = tiop->c_cc[VEOF]; | |
418 | _rl_tty_chars.t_eol = tiop->c_cc[VEOL]; | |
419 | #ifdef VEOL2 | |
420 | _rl_tty_chars.t_eol2 = tiop->c_cc[VEOL2]; | |
421 | #endif | |
422 | _rl_tty_chars.t_erase = tiop->c_cc[VERASE]; | |
423 | #ifdef VWERASE | |
424 | _rl_tty_chars.t_werase = tiop->c_cc[VWERASE]; | |
425 | #endif | |
426 | _rl_tty_chars.t_kill = tiop->c_cc[VKILL]; | |
427 | #ifdef VREPRINT | |
428 | _rl_tty_chars.t_reprint = tiop->c_cc[VREPRINT]; | |
429 | #endif | |
430 | _rl_tty_chars.t_intr = tiop->c_cc[VINTR]; | |
431 | _rl_tty_chars.t_quit = tiop->c_cc[VQUIT]; | |
432 | #ifdef VSUSP | |
433 | _rl_tty_chars.t_susp = tiop->c_cc[VSUSP]; | |
434 | #endif | |
435 | #ifdef VDSUSP | |
436 | _rl_tty_chars.t_dsusp = tiop->c_cc[VDSUSP]; | |
437 | #endif | |
438 | #ifdef VSTART | |
439 | _rl_tty_chars.t_start = tiop->c_cc[VSTART]; | |
440 | #endif | |
441 | #ifdef VSTOP | |
442 | _rl_tty_chars.t_stop = tiop->c_cc[VSTOP]; | |
443 | #endif | |
444 | #ifdef VLNEXT | |
445 | _rl_tty_chars.t_lnext = tiop->c_cc[VLNEXT]; | |
446 | #endif | |
447 | #ifdef VDISCARD | |
448 | _rl_tty_chars.t_flush = tiop->c_cc[VDISCARD]; | |
449 | #endif | |
450 | #ifdef VSTATUS | |
451 | _rl_tty_chars.t_status = tiop->c_cc[VSTATUS]; | |
452 | #endif | |
453 | } | |
454 | ||
455 | #if defined (_AIX) || defined (_AIX41) | |
456 | /* Currently this is only used on AIX */ | |
d60d9f65 SS |
457 | static void |
458 | rltty_warning (msg) | |
459 | char *msg; | |
460 | { | |
461 | fprintf (stderr, "readline: warning: %s\n", msg); | |
462 | } | |
1b17e766 | 463 | #endif |
d60d9f65 SS |
464 | |
465 | #if defined (_AIX) | |
466 | void | |
467 | setopost(tp) | |
468 | TIOTYPE *tp; | |
469 | { | |
470 | if ((tp->c_oflag & OPOST) == 0) | |
471 | { | |
472 | rltty_warning ("turning on OPOST for terminal\r"); | |
473 | tp->c_oflag |= OPOST|ONLCR; | |
474 | } | |
475 | } | |
476 | #endif | |
477 | ||
478 | static int | |
1b17e766 | 479 | _get_tty_settings (tty, tiop) |
d60d9f65 SS |
480 | int tty; |
481 | TIOTYPE *tiop; | |
482 | { | |
483 | int ioctl_ret; | |
c862e87b | 484 | |
d60d9f65 SS |
485 | while (1) |
486 | { | |
487 | ioctl_ret = GETATTR (tty, tiop); | |
488 | if (ioctl_ret < 0) | |
489 | { | |
490 | if (errno != EINTR) | |
491 | return -1; | |
492 | else | |
493 | continue; | |
494 | } | |
495 | if (OUTPUT_BEING_FLUSHED (tiop)) | |
496 | { | |
497 | #if defined (FLUSHO) && defined (_AIX41) | |
498 | rltty_warning ("turning off output flushing"); | |
499 | tiop->c_lflag &= ~FLUSHO; | |
500 | break; | |
501 | #else | |
502 | continue; | |
503 | #endif | |
504 | } | |
505 | break; | |
506 | } | |
507 | ||
1b17e766 EZ |
508 | return 0; |
509 | } | |
510 | ||
511 | static int | |
512 | get_tty_settings (tty, tiop) | |
513 | int tty; | |
514 | TIOTYPE *tiop; | |
515 | { | |
516 | #if defined (TIOCGWINSZ) | |
517 | set_winsize (tty); | |
518 | #endif | |
519 | ||
520 | if (_get_tty_settings (tty, tiop) < 0) | |
521 | return -1; | |
522 | ||
d60d9f65 SS |
523 | #if defined (_AIX) |
524 | setopost(tiop); | |
525 | #endif | |
526 | ||
527 | return 0; | |
528 | } | |
529 | ||
530 | static int | |
1b17e766 | 531 | _set_tty_settings (tty, tiop) |
d60d9f65 SS |
532 | int tty; |
533 | TIOTYPE *tiop; | |
534 | { | |
535 | while (SETATTR (tty, tiop) < 0) | |
536 | { | |
537 | if (errno != EINTR) | |
538 | return -1; | |
539 | errno = 0; | |
540 | } | |
1b17e766 EZ |
541 | return 0; |
542 | } | |
d60d9f65 | 543 | |
1b17e766 EZ |
544 | static int |
545 | set_tty_settings (tty, tiop) | |
546 | int tty; | |
547 | TIOTYPE *tiop; | |
548 | { | |
549 | if (_set_tty_settings (tty, tiop) < 0) | |
550 | return -1; | |
551 | ||
d60d9f65 SS |
552 | #if 0 |
553 | ||
554 | #if defined (TERMIOS_TTY_DRIVER) | |
555 | # if defined (__ksr1__) | |
556 | if (ksrflow) | |
557 | { | |
558 | ksrflow = 0; | |
559 | tcflow (tty, TCOON); | |
560 | } | |
561 | # else /* !ksr1 */ | |
562 | tcflow (tty, TCOON); /* Simulate a ^Q. */ | |
563 | # endif /* !ksr1 */ | |
564 | #else | |
565 | ioctl (tty, TCXONC, 1); /* Simulate a ^Q. */ | |
566 | #endif /* !TERMIOS_TTY_DRIVER */ | |
567 | ||
1b17e766 | 568 | #endif /* 0 */ |
d60d9f65 SS |
569 | |
570 | return 0; | |
571 | } | |
572 | ||
573 | static void | |
9255ee31 | 574 | prepare_terminal_settings (meta_flag, oldtio, tiop) |
d60d9f65 | 575 | int meta_flag; |
9255ee31 | 576 | TIOTYPE oldtio, *tiop; |
d60d9f65 | 577 | { |
9255ee31 | 578 | readline_echoing_p = (oldtio.c_lflag & ECHO); |
d60d9f65 SS |
579 | |
580 | tiop->c_lflag &= ~(ICANON | ECHO); | |
581 | ||
9255ee31 EZ |
582 | if ((unsigned char) oldtio.c_cc[VEOF] != (unsigned char) _POSIX_VDISABLE) |
583 | _rl_eof_char = oldtio.c_cc[VEOF]; | |
d60d9f65 SS |
584 | |
585 | #if defined (USE_XON_XOFF) | |
586 | #if defined (IXANY) | |
587 | tiop->c_iflag &= ~(IXON | IXOFF | IXANY); | |
588 | #else | |
589 | /* `strict' Posix systems do not define IXANY. */ | |
590 | tiop->c_iflag &= ~(IXON | IXOFF); | |
591 | #endif /* IXANY */ | |
592 | #endif /* USE_XON_XOFF */ | |
593 | ||
594 | /* Only turn this off if we are using all 8 bits. */ | |
595 | if (((tiop->c_cflag & CSIZE) == CS8) || meta_flag) | |
596 | tiop->c_iflag &= ~(ISTRIP | INPCK); | |
597 | ||
598 | /* Make sure we differentiate between CR and NL on input. */ | |
599 | tiop->c_iflag &= ~(ICRNL | INLCR); | |
600 | ||
601 | #if !defined (HANDLE_SIGNALS) | |
602 | tiop->c_lflag &= ~ISIG; | |
603 | #else | |
604 | tiop->c_lflag |= ISIG; | |
605 | #endif | |
606 | ||
607 | tiop->c_cc[VMIN] = 1; | |
608 | tiop->c_cc[VTIME] = 0; | |
609 | ||
610 | #if defined (FLUSHO) | |
611 | if (OUTPUT_BEING_FLUSHED (tiop)) | |
612 | { | |
613 | tiop->c_lflag &= ~FLUSHO; | |
9255ee31 | 614 | oldtio.c_lflag &= ~FLUSHO; |
d60d9f65 SS |
615 | } |
616 | #endif | |
617 | ||
618 | /* Turn off characters that we need on Posix systems with job control, | |
619 | just to be sure. This includes ^Y and ^V. This should not really | |
620 | be necessary. */ | |
621 | #if defined (TERMIOS_TTY_DRIVER) && defined (_POSIX_VDISABLE) | |
622 | ||
623 | #if defined (VLNEXT) | |
624 | tiop->c_cc[VLNEXT] = _POSIX_VDISABLE; | |
625 | #endif | |
626 | ||
627 | #if defined (VDSUSP) | |
628 | tiop->c_cc[VDSUSP] = _POSIX_VDISABLE; | |
629 | #endif | |
630 | ||
631 | #endif /* TERMIOS_TTY_DRIVER && _POSIX_VDISABLE */ | |
632 | } | |
633 | #endif /* NEW_TTY_DRIVER */ | |
634 | ||
635 | /* Put the terminal in CBREAK mode so that we can detect key presses. */ | |
636 | void | |
637 | rl_prep_terminal (meta_flag) | |
638 | int meta_flag; | |
639 | { | |
d60d9f65 SS |
640 | int tty; |
641 | TIOTYPE tio; | |
642 | ||
643 | if (terminal_prepped) | |
644 | return; | |
645 | ||
646 | /* Try to keep this function from being INTerrupted. */ | |
647 | block_sigint (); | |
648 | ||
649 | tty = fileno (rl_instream); | |
650 | ||
651 | if (get_tty_settings (tty, &tio) < 0) | |
652 | { | |
653 | release_sigint (); | |
654 | return; | |
655 | } | |
656 | ||
657 | otio = tio; | |
658 | ||
1b17e766 EZ |
659 | save_tty_chars (&otio); |
660 | ||
d60d9f65 SS |
661 | prepare_terminal_settings (meta_flag, otio, &tio); |
662 | ||
663 | if (set_tty_settings (tty, &tio) < 0) | |
664 | { | |
665 | release_sigint (); | |
666 | return; | |
667 | } | |
668 | ||
669 | if (_rl_enable_keypad) | |
670 | _rl_control_keypad (1); | |
671 | ||
672 | fflush (rl_outstream); | |
673 | terminal_prepped = 1; | |
9255ee31 | 674 | RL_SETSTATE(RL_STATE_TERMPREPPED); |
d60d9f65 SS |
675 | |
676 | release_sigint (); | |
d60d9f65 SS |
677 | } |
678 | ||
679 | /* Restore the terminal's normal settings and modes. */ | |
680 | void | |
681 | rl_deprep_terminal () | |
682 | { | |
d60d9f65 SS |
683 | int tty; |
684 | ||
685 | if (!terminal_prepped) | |
686 | return; | |
687 | ||
688 | /* Try to keep this function from being interrupted. */ | |
689 | block_sigint (); | |
690 | ||
691 | tty = fileno (rl_instream); | |
692 | ||
693 | if (_rl_enable_keypad) | |
694 | _rl_control_keypad (0); | |
695 | ||
696 | fflush (rl_outstream); | |
697 | ||
698 | if (set_tty_settings (tty, &otio) < 0) | |
699 | { | |
700 | release_sigint (); | |
701 | return; | |
702 | } | |
703 | ||
704 | terminal_prepped = 0; | |
9255ee31 | 705 | RL_UNSETSTATE(RL_STATE_TERMPREPPED); |
d60d9f65 SS |
706 | |
707 | release_sigint (); | |
d60d9f65 SS |
708 | } |
709 | \f | |
710 | /* **************************************************************** */ | |
711 | /* */ | |
712 | /* Bogus Flow Control */ | |
713 | /* */ | |
714 | /* **************************************************************** */ | |
715 | ||
716 | int | |
717 | rl_restart_output (count, key) | |
718 | int count, key; | |
719 | { | |
720 | int fildes = fileno (rl_outstream); | |
721 | #if defined (TIOCSTART) | |
722 | #if defined (apollo) | |
723 | ioctl (&fildes, TIOCSTART, 0); | |
724 | #else | |
725 | ioctl (fildes, TIOCSTART, 0); | |
726 | #endif /* apollo */ | |
727 | ||
728 | #else /* !TIOCSTART */ | |
729 | # if defined (TERMIOS_TTY_DRIVER) | |
730 | # if defined (__ksr1__) | |
731 | if (ksrflow) | |
732 | { | |
733 | ksrflow = 0; | |
734 | tcflow (fildes, TCOON); | |
735 | } | |
736 | # else /* !ksr1 */ | |
737 | tcflow (fildes, TCOON); /* Simulate a ^Q. */ | |
738 | # endif /* !ksr1 */ | |
739 | # else /* !TERMIOS_TTY_DRIVER */ | |
740 | # if defined (TCXONC) | |
741 | ioctl (fildes, TCXONC, TCOON); | |
742 | # endif /* TCXONC */ | |
743 | # endif /* !TERMIOS_TTY_DRIVER */ | |
744 | #endif /* !TIOCSTART */ | |
745 | ||
746 | return 0; | |
747 | } | |
748 | ||
749 | int | |
750 | rl_stop_output (count, key) | |
751 | int count, key; | |
752 | { | |
753 | int fildes = fileno (rl_instream); | |
754 | ||
755 | #if defined (TIOCSTOP) | |
756 | # if defined (apollo) | |
757 | ioctl (&fildes, TIOCSTOP, 0); | |
758 | # else | |
759 | ioctl (fildes, TIOCSTOP, 0); | |
760 | # endif /* apollo */ | |
761 | #else /* !TIOCSTOP */ | |
762 | # if defined (TERMIOS_TTY_DRIVER) | |
763 | # if defined (__ksr1__) | |
764 | ksrflow = 1; | |
765 | # endif /* ksr1 */ | |
766 | tcflow (fildes, TCOOFF); | |
767 | # else | |
768 | # if defined (TCXONC) | |
769 | ioctl (fildes, TCXONC, TCOON); | |
770 | # endif /* TCXONC */ | |
771 | # endif /* !TERMIOS_TTY_DRIVER */ | |
772 | #endif /* !TIOCSTOP */ | |
773 | ||
774 | return 0; | |
775 | } | |
776 | ||
777 | /* **************************************************************** */ | |
778 | /* */ | |
779 | /* Default Key Bindings */ | |
780 | /* */ | |
781 | /* **************************************************************** */ | |
9255ee31 EZ |
782 | |
783 | /* Set the system's default editing characters to their readline equivalents | |
784 | in KMAP. Should be static, now that we have rl_tty_set_default_bindings. */ | |
d60d9f65 SS |
785 | void |
786 | rltty_set_default_bindings (kmap) | |
787 | Keymap kmap; | |
788 | { | |
789 | TIOTYPE ttybuff; | |
790 | int tty = fileno (rl_instream); | |
791 | ||
792 | #if defined (NEW_TTY_DRIVER) | |
793 | ||
794 | #define SET_SPECIAL(sc, func) \ | |
795 | do \ | |
796 | { \ | |
797 | int ic; \ | |
798 | ic = sc; \ | |
9255ee31 EZ |
799 | if (ic != -1 && kmap[(unsigned char)ic].type == ISFUNC) \ |
800 | kmap[(unsigned char)ic].function = func; \ | |
d60d9f65 SS |
801 | } \ |
802 | while (0) | |
803 | ||
804 | if (get_tty_settings (tty, &ttybuff) == 0) | |
805 | { | |
806 | if (ttybuff.flags & SGTTY_SET) | |
807 | { | |
808 | SET_SPECIAL (ttybuff.sgttyb.sg_erase, rl_rubout); | |
809 | SET_SPECIAL (ttybuff.sgttyb.sg_kill, rl_unix_line_discard); | |
810 | } | |
811 | ||
812 | # if defined (TIOCGLTC) | |
813 | if (ttybuff.flags & LTCHARS_SET) | |
814 | { | |
815 | SET_SPECIAL (ttybuff.ltchars.t_werasc, rl_unix_word_rubout); | |
816 | SET_SPECIAL (ttybuff.ltchars.t_lnextc, rl_quoted_insert); | |
817 | } | |
818 | # endif /* TIOCGLTC */ | |
819 | } | |
820 | ||
821 | #else /* !NEW_TTY_DRIVER */ | |
822 | ||
823 | #define SET_SPECIAL(sc, func) \ | |
824 | do \ | |
825 | { \ | |
826 | unsigned char uc; \ | |
827 | uc = ttybuff.c_cc[sc]; \ | |
828 | if (uc != (unsigned char)_POSIX_VDISABLE && kmap[uc].type == ISFUNC) \ | |
829 | kmap[uc].function = func; \ | |
830 | } \ | |
831 | while (0) | |
832 | ||
833 | if (get_tty_settings (tty, &ttybuff) == 0) | |
834 | { | |
835 | SET_SPECIAL (VERASE, rl_rubout); | |
836 | SET_SPECIAL (VKILL, rl_unix_line_discard); | |
837 | ||
838 | # if defined (VLNEXT) && defined (TERMIOS_TTY_DRIVER) | |
839 | SET_SPECIAL (VLNEXT, rl_quoted_insert); | |
840 | # endif /* VLNEXT && TERMIOS_TTY_DRIVER */ | |
841 | ||
842 | # if defined (VWERASE) && defined (TERMIOS_TTY_DRIVER) | |
843 | SET_SPECIAL (VWERASE, rl_unix_word_rubout); | |
844 | # endif /* VWERASE && TERMIOS_TTY_DRIVER */ | |
845 | } | |
846 | #endif /* !NEW_TTY_DRIVER */ | |
847 | } | |
1b17e766 | 848 | |
9255ee31 EZ |
849 | /* New public way to set the system default editing chars to their readline |
850 | equivalents. */ | |
851 | void | |
852 | rl_tty_set_default_bindings (kmap) | |
853 | Keymap kmap; | |
854 | { | |
855 | rltty_set_default_bindings (kmap); | |
856 | } | |
857 | ||
1b17e766 EZ |
858 | #if defined (HANDLE_SIGNALS) |
859 | ||
860 | #if defined (NEW_TTY_DRIVER) | |
861 | int | |
862 | _rl_disable_tty_signals () | |
863 | { | |
864 | return 0; | |
865 | } | |
866 | ||
867 | int | |
868 | _rl_restore_tty_signals () | |
869 | { | |
870 | return 0; | |
871 | } | |
872 | #else | |
873 | ||
874 | static TIOTYPE sigstty, nosigstty; | |
875 | static int tty_sigs_disabled = 0; | |
876 | ||
877 | int | |
878 | _rl_disable_tty_signals () | |
879 | { | |
880 | if (tty_sigs_disabled) | |
881 | return 0; | |
882 | ||
883 | if (_get_tty_settings (fileno (rl_instream), &sigstty) < 0) | |
884 | return -1; | |
885 | ||
886 | nosigstty = sigstty; | |
887 | ||
888 | nosigstty.c_lflag &= ~ISIG; | |
9255ee31 | 889 | nosigstty.c_iflag &= ~IXON; |
1b17e766 EZ |
890 | |
891 | if (_set_tty_settings (fileno (rl_instream), &nosigstty) < 0) | |
892 | return (_set_tty_settings (fileno (rl_instream), &sigstty)); | |
893 | ||
894 | tty_sigs_disabled = 1; | |
895 | return 0; | |
896 | } | |
897 | ||
898 | int | |
899 | _rl_restore_tty_signals () | |
900 | { | |
9255ee31 EZ |
901 | int r; |
902 | ||
1b17e766 EZ |
903 | if (tty_sigs_disabled == 0) |
904 | return 0; | |
905 | ||
9255ee31 EZ |
906 | r = _set_tty_settings (fileno (rl_instream), &sigstty); |
907 | ||
908 | if (r == 0) | |
909 | tty_sigs_disabled = 0; | |
910 | ||
911 | return r; | |
1b17e766 EZ |
912 | } |
913 | #endif /* !NEW_TTY_DRIVER */ | |
914 | ||
915 | #endif /* HANDLE_SIGNALS */ |