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 | 154 | |
fd8be987 MM |
155 | #if defined (NO_TTY_DRIVER) |
156 | /* Nothing */ | |
157 | #elif defined (NEW_TTY_DRIVER) | |
d60d9f65 SS |
158 | |
159 | /* Values for the `flags' field of a struct bsdtty. This tells which | |
160 | elements of the struct bsdtty have been fetched from the system and | |
161 | are valid. */ | |
162 | #define SGTTY_SET 0x01 | |
163 | #define LFLAG_SET 0x02 | |
164 | #define TCHARS_SET 0x04 | |
165 | #define LTCHARS_SET 0x08 | |
166 | ||
167 | struct bsdtty { | |
168 | struct sgttyb sgttyb; /* Basic BSD tty driver information. */ | |
169 | int lflag; /* Local mode flags, like LPASS8. */ | |
170 | #if defined (TIOCGETC) | |
171 | struct tchars tchars; /* Terminal special characters, including ^S and ^Q. */ | |
172 | #endif | |
173 | #if defined (TIOCGLTC) | |
174 | struct ltchars ltchars; /* 4.2 BSD editing characters */ | |
175 | #endif | |
176 | int flags; /* Bitmap saying which parts of the struct are valid. */ | |
177 | }; | |
178 | ||
179 | #define TIOTYPE struct bsdtty | |
180 | ||
181 | static TIOTYPE otio; | |
182 | ||
9255ee31 EZ |
183 | static void save_tty_chars PARAMS((TIOTYPE *)); |
184 | static int _get_tty_settings PARAMS((int, TIOTYPE *)); | |
185 | static int get_tty_settings PARAMS((int, TIOTYPE *)); | |
186 | static int _set_tty_settings PARAMS((int, TIOTYPE *)); | |
187 | static int set_tty_settings PARAMS((int, TIOTYPE *)); | |
188 | ||
189 | static void prepare_terminal_settings PARAMS((int, TIOTYPE, TIOTYPE *)); | |
190 | ||
1b17e766 EZ |
191 | static void |
192 | save_tty_chars (tiop) | |
193 | TIOTYPE *tiop; | |
194 | { | |
195 | _rl_last_tty_chars = _rl_tty_chars; | |
196 | ||
197 | if (tiop->flags & SGTTY_SET) | |
198 | { | |
199 | _rl_tty_chars.t_erase = tiop->sgttyb.sg_erase; | |
200 | _rl_tty_chars.t_kill = tiop->sgttyb.sg_kill; | |
201 | } | |
202 | ||
203 | if (tiop->flags & TCHARS_SET) | |
204 | { | |
205 | _rl_tty_chars.t_intr = tiop->tchars.t_intrc; | |
206 | _rl_tty_chars.t_quit = tiop->tchars.t_quitc; | |
207 | _rl_tty_chars.t_start = tiop->tchars.t_startc; | |
5844f845 | 208 | _rl_tty_chars.t_stop = tiop->tchars.t_stopc; |
1b17e766 EZ |
209 | _rl_tty_chars.t_eof = tiop->tchars.t_eofc; |
210 | _rl_tty_chars.t_eol = '\n'; | |
211 | _rl_tty_chars.t_eol2 = tiop->tchars.t_brkc; | |
212 | } | |
213 | ||
214 | if (tiop->flags & LTCHARS_SET) | |
215 | { | |
216 | _rl_tty_chars.t_susp = tiop->ltchars.t_suspc; | |
217 | _rl_tty_chars.t_dsusp = tiop->ltchars.t_dsuspc; | |
218 | _rl_tty_chars.t_reprint = tiop->ltchars.t_rprntc; | |
219 | _rl_tty_chars.t_flush = tiop->ltchars.t_flushc; | |
220 | _rl_tty_chars.t_werase = tiop->ltchars.t_werasc; | |
221 | _rl_tty_chars.t_lnext = tiop->ltchars.t_lnextc; | |
222 | } | |
223 | ||
224 | _rl_tty_chars.t_status = -1; | |
225 | } | |
226 | ||
d60d9f65 SS |
227 | static int |
228 | get_tty_settings (tty, tiop) | |
229 | int tty; | |
230 | TIOTYPE *tiop; | |
231 | { | |
d1857004 | 232 | #if defined (TIOCGWINSZ) |
d60d9f65 | 233 | set_winsize (tty); |
d1857004 | 234 | #endif |
d60d9f65 SS |
235 | |
236 | tiop->flags = tiop->lflag = 0; | |
237 | ||
9255ee31 EZ |
238 | if (ioctl (tty, TIOCGETP, &(tiop->sgttyb)) < 0) |
239 | return -1; | |
d60d9f65 SS |
240 | tiop->flags |= SGTTY_SET; |
241 | ||
242 | #if defined (TIOCLGET) | |
9255ee31 EZ |
243 | if (ioctl (tty, TIOCLGET, &(tiop->lflag)) == 0) |
244 | tiop->flags |= LFLAG_SET; | |
d60d9f65 SS |
245 | #endif |
246 | ||
247 | #if defined (TIOCGETC) | |
9255ee31 EZ |
248 | if (ioctl (tty, TIOCGETC, &(tiop->tchars)) == 0) |
249 | tiop->flags |= TCHARS_SET; | |
d60d9f65 SS |
250 | #endif |
251 | ||
252 | #if defined (TIOCGLTC) | |
9255ee31 EZ |
253 | if (ioctl (tty, TIOCGLTC, &(tiop->ltchars)) == 0) |
254 | tiop->flags |= LTCHARS_SET; | |
d60d9f65 SS |
255 | #endif |
256 | ||
257 | return 0; | |
258 | } | |
259 | ||
260 | static int | |
261 | set_tty_settings (tty, tiop) | |
262 | int tty; | |
263 | TIOTYPE *tiop; | |
264 | { | |
265 | if (tiop->flags & SGTTY_SET) | |
266 | { | |
267 | ioctl (tty, TIOCSETN, &(tiop->sgttyb)); | |
268 | tiop->flags &= ~SGTTY_SET; | |
269 | } | |
270 | readline_echoing_p = 1; | |
271 | ||
272 | #if defined (TIOCLSET) | |
273 | if (tiop->flags & LFLAG_SET) | |
274 | { | |
275 | ioctl (tty, TIOCLSET, &(tiop->lflag)); | |
276 | tiop->flags &= ~LFLAG_SET; | |
277 | } | |
278 | #endif | |
279 | ||
280 | #if defined (TIOCSETC) | |
281 | if (tiop->flags & TCHARS_SET) | |
282 | { | |
283 | ioctl (tty, TIOCSETC, &(tiop->tchars)); | |
284 | tiop->flags &= ~TCHARS_SET; | |
285 | } | |
286 | #endif | |
287 | ||
288 | #if defined (TIOCSLTC) | |
289 | if (tiop->flags & LTCHARS_SET) | |
290 | { | |
291 | ioctl (tty, TIOCSLTC, &(tiop->ltchars)); | |
292 | tiop->flags &= ~LTCHARS_SET; | |
293 | } | |
294 | #endif | |
295 | ||
296 | return 0; | |
297 | } | |
298 | ||
299 | static void | |
9255ee31 | 300 | prepare_terminal_settings (meta_flag, oldtio, tiop) |
d60d9f65 | 301 | int meta_flag; |
9255ee31 | 302 | TIOTYPE oldtio, *tiop; |
d60d9f65 | 303 | { |
9255ee31 | 304 | readline_echoing_p = (oldtio.sgttyb.sg_flags & ECHO); |
d60d9f65 SS |
305 | |
306 | /* Copy the original settings to the structure we're going to use for | |
307 | our settings. */ | |
9255ee31 EZ |
308 | tiop->sgttyb = oldtio.sgttyb; |
309 | tiop->lflag = oldtio.lflag; | |
d60d9f65 | 310 | #if defined (TIOCGETC) |
9255ee31 | 311 | tiop->tchars = oldtio.tchars; |
d60d9f65 SS |
312 | #endif |
313 | #if defined (TIOCGLTC) | |
9255ee31 | 314 | tiop->ltchars = oldtio.ltchars; |
d60d9f65 | 315 | #endif |
9255ee31 | 316 | tiop->flags = oldtio.flags; |
d60d9f65 SS |
317 | |
318 | /* First, the basic settings to put us into character-at-a-time, no-echo | |
319 | input mode. */ | |
320 | tiop->sgttyb.sg_flags &= ~(ECHO | CRMOD); | |
321 | tiop->sgttyb.sg_flags |= CBREAK; | |
322 | ||
323 | /* If this terminal doesn't care how the 8th bit is used, then we can | |
324 | use it for the meta-key. If only one of even or odd parity is | |
325 | specified, then the terminal is using parity, and we cannot. */ | |
326 | #if !defined (ANYP) | |
327 | # define ANYP (EVENP | ODDP) | |
328 | #endif | |
9255ee31 EZ |
329 | if (((oldtio.sgttyb.sg_flags & ANYP) == ANYP) || |
330 | ((oldtio.sgttyb.sg_flags & ANYP) == 0)) | |
d60d9f65 SS |
331 | { |
332 | tiop->sgttyb.sg_flags |= ANYP; | |
333 | ||
334 | /* Hack on local mode flags if we can. */ | |
335 | #if defined (TIOCLGET) | |
336 | # if defined (LPASS8) | |
337 | tiop->lflag |= LPASS8; | |
338 | # endif /* LPASS8 */ | |
339 | #endif /* TIOCLGET */ | |
340 | } | |
341 | ||
342 | #if defined (TIOCGETC) | |
343 | # if defined (USE_XON_XOFF) | |
344 | /* Get rid of terminal output start and stop characters. */ | |
345 | tiop->tchars.t_stopc = -1; /* C-s */ | |
346 | tiop->tchars.t_startc = -1; /* C-q */ | |
347 | ||
348 | /* If there is an XON character, bind it to restart the output. */ | |
9255ee31 EZ |
349 | if (oldtio.tchars.t_startc != -1) |
350 | rl_bind_key (oldtio.tchars.t_startc, rl_restart_output); | |
d60d9f65 SS |
351 | # endif /* USE_XON_XOFF */ |
352 | ||
353 | /* If there is an EOF char, bind _rl_eof_char to it. */ | |
9255ee31 EZ |
354 | if (oldtio.tchars.t_eofc != -1) |
355 | _rl_eof_char = oldtio.tchars.t_eofc; | |
d60d9f65 SS |
356 | |
357 | # if defined (NO_KILL_INTR) | |
358 | /* Get rid of terminal-generated SIGQUIT and SIGINT. */ | |
359 | tiop->tchars.t_quitc = -1; /* C-\ */ | |
360 | tiop->tchars.t_intrc = -1; /* C-c */ | |
361 | # endif /* NO_KILL_INTR */ | |
362 | #endif /* TIOCGETC */ | |
363 | ||
364 | #if defined (TIOCGLTC) | |
365 | /* Make the interrupt keys go away. Just enough to make people happy. */ | |
366 | tiop->ltchars.t_dsuspc = -1; /* C-y */ | |
367 | tiop->ltchars.t_lnextc = -1; /* C-v */ | |
368 | #endif /* TIOCGLTC */ | |
d60d9f65 SS |
369 | } |
370 | ||
371 | #else /* !defined (NEW_TTY_DRIVER) */ | |
372 | ||
373 | #if !defined (VMIN) | |
374 | # define VMIN VEOF | |
375 | #endif | |
376 | ||
377 | #if !defined (VTIME) | |
378 | # define VTIME VEOL | |
379 | #endif | |
380 | ||
381 | #if defined (TERMIOS_TTY_DRIVER) | |
382 | # define TIOTYPE struct termios | |
383 | # define DRAIN_OUTPUT(fd) tcdrain (fd) | |
384 | # define GETATTR(tty, tiop) (tcgetattr (tty, tiop)) | |
385 | # ifdef M_UNIX | |
386 | # define SETATTR(tty, tiop) (tcsetattr (tty, TCSANOW, tiop)) | |
387 | # else | |
388 | # define SETATTR(tty, tiop) (tcsetattr (tty, TCSADRAIN, tiop)) | |
389 | # endif /* !M_UNIX */ | |
390 | #else | |
391 | # define TIOTYPE struct termio | |
392 | # define DRAIN_OUTPUT(fd) | |
393 | # define GETATTR(tty, tiop) (ioctl (tty, TCGETA, tiop)) | |
9255ee31 | 394 | # define SETATTR(tty, tiop) (ioctl (tty, TCSETAW, tiop)) |
d60d9f65 SS |
395 | #endif /* !TERMIOS_TTY_DRIVER */ |
396 | ||
397 | static TIOTYPE otio; | |
398 | ||
9255ee31 EZ |
399 | static void save_tty_chars PARAMS((TIOTYPE *)); |
400 | static int _get_tty_settings PARAMS((int, TIOTYPE *)); | |
401 | static int get_tty_settings PARAMS((int, TIOTYPE *)); | |
402 | static int _set_tty_settings PARAMS((int, TIOTYPE *)); | |
403 | static int set_tty_settings PARAMS((int, TIOTYPE *)); | |
404 | ||
405 | static void prepare_terminal_settings PARAMS((int, TIOTYPE, TIOTYPE *)); | |
406 | ||
d60d9f65 SS |
407 | #if defined (FLUSHO) |
408 | # define OUTPUT_BEING_FLUSHED(tp) (tp->c_lflag & FLUSHO) | |
409 | #else | |
410 | # define OUTPUT_BEING_FLUSHED(tp) 0 | |
411 | #endif | |
412 | ||
1b17e766 EZ |
413 | static void |
414 | save_tty_chars (tiop) | |
415 | TIOTYPE *tiop; | |
416 | { | |
417 | _rl_last_tty_chars = _rl_tty_chars; | |
418 | ||
419 | _rl_tty_chars.t_eof = tiop->c_cc[VEOF]; | |
420 | _rl_tty_chars.t_eol = tiop->c_cc[VEOL]; | |
421 | #ifdef VEOL2 | |
422 | _rl_tty_chars.t_eol2 = tiop->c_cc[VEOL2]; | |
423 | #endif | |
424 | _rl_tty_chars.t_erase = tiop->c_cc[VERASE]; | |
425 | #ifdef VWERASE | |
426 | _rl_tty_chars.t_werase = tiop->c_cc[VWERASE]; | |
427 | #endif | |
428 | _rl_tty_chars.t_kill = tiop->c_cc[VKILL]; | |
429 | #ifdef VREPRINT | |
430 | _rl_tty_chars.t_reprint = tiop->c_cc[VREPRINT]; | |
431 | #endif | |
432 | _rl_tty_chars.t_intr = tiop->c_cc[VINTR]; | |
433 | _rl_tty_chars.t_quit = tiop->c_cc[VQUIT]; | |
434 | #ifdef VSUSP | |
435 | _rl_tty_chars.t_susp = tiop->c_cc[VSUSP]; | |
436 | #endif | |
437 | #ifdef VDSUSP | |
438 | _rl_tty_chars.t_dsusp = tiop->c_cc[VDSUSP]; | |
439 | #endif | |
440 | #ifdef VSTART | |
441 | _rl_tty_chars.t_start = tiop->c_cc[VSTART]; | |
442 | #endif | |
443 | #ifdef VSTOP | |
444 | _rl_tty_chars.t_stop = tiop->c_cc[VSTOP]; | |
445 | #endif | |
446 | #ifdef VLNEXT | |
447 | _rl_tty_chars.t_lnext = tiop->c_cc[VLNEXT]; | |
448 | #endif | |
449 | #ifdef VDISCARD | |
450 | _rl_tty_chars.t_flush = tiop->c_cc[VDISCARD]; | |
451 | #endif | |
452 | #ifdef VSTATUS | |
453 | _rl_tty_chars.t_status = tiop->c_cc[VSTATUS]; | |
454 | #endif | |
455 | } | |
456 | ||
457 | #if defined (_AIX) || defined (_AIX41) | |
458 | /* Currently this is only used on AIX */ | |
d60d9f65 SS |
459 | static void |
460 | rltty_warning (msg) | |
461 | char *msg; | |
462 | { | |
463 | fprintf (stderr, "readline: warning: %s\n", msg); | |
464 | } | |
1b17e766 | 465 | #endif |
d60d9f65 SS |
466 | |
467 | #if defined (_AIX) | |
468 | void | |
469 | setopost(tp) | |
470 | TIOTYPE *tp; | |
471 | { | |
472 | if ((tp->c_oflag & OPOST) == 0) | |
473 | { | |
474 | rltty_warning ("turning on OPOST for terminal\r"); | |
475 | tp->c_oflag |= OPOST|ONLCR; | |
476 | } | |
477 | } | |
478 | #endif | |
479 | ||
480 | static int | |
1b17e766 | 481 | _get_tty_settings (tty, tiop) |
d60d9f65 SS |
482 | int tty; |
483 | TIOTYPE *tiop; | |
484 | { | |
485 | int ioctl_ret; | |
c862e87b | 486 | |
d60d9f65 SS |
487 | while (1) |
488 | { | |
489 | ioctl_ret = GETATTR (tty, tiop); | |
490 | if (ioctl_ret < 0) | |
491 | { | |
492 | if (errno != EINTR) | |
493 | return -1; | |
494 | else | |
495 | continue; | |
496 | } | |
497 | if (OUTPUT_BEING_FLUSHED (tiop)) | |
498 | { | |
499 | #if defined (FLUSHO) && defined (_AIX41) | |
500 | rltty_warning ("turning off output flushing"); | |
501 | tiop->c_lflag &= ~FLUSHO; | |
502 | break; | |
503 | #else | |
504 | continue; | |
505 | #endif | |
506 | } | |
507 | break; | |
508 | } | |
509 | ||
1b17e766 EZ |
510 | return 0; |
511 | } | |
512 | ||
513 | static int | |
514 | get_tty_settings (tty, tiop) | |
515 | int tty; | |
516 | TIOTYPE *tiop; | |
517 | { | |
518 | #if defined (TIOCGWINSZ) | |
519 | set_winsize (tty); | |
520 | #endif | |
521 | ||
522 | if (_get_tty_settings (tty, tiop) < 0) | |
523 | return -1; | |
524 | ||
d60d9f65 SS |
525 | #if defined (_AIX) |
526 | setopost(tiop); | |
527 | #endif | |
528 | ||
529 | return 0; | |
530 | } | |
531 | ||
532 | static int | |
1b17e766 | 533 | _set_tty_settings (tty, tiop) |
d60d9f65 SS |
534 | int tty; |
535 | TIOTYPE *tiop; | |
536 | { | |
537 | while (SETATTR (tty, tiop) < 0) | |
538 | { | |
539 | if (errno != EINTR) | |
540 | return -1; | |
541 | errno = 0; | |
542 | } | |
1b17e766 EZ |
543 | return 0; |
544 | } | |
d60d9f65 | 545 | |
1b17e766 EZ |
546 | static int |
547 | set_tty_settings (tty, tiop) | |
548 | int tty; | |
549 | TIOTYPE *tiop; | |
550 | { | |
551 | if (_set_tty_settings (tty, tiop) < 0) | |
552 | return -1; | |
553 | ||
d60d9f65 SS |
554 | #if 0 |
555 | ||
556 | #if defined (TERMIOS_TTY_DRIVER) | |
557 | # if defined (__ksr1__) | |
558 | if (ksrflow) | |
559 | { | |
560 | ksrflow = 0; | |
561 | tcflow (tty, TCOON); | |
562 | } | |
563 | # else /* !ksr1 */ | |
564 | tcflow (tty, TCOON); /* Simulate a ^Q. */ | |
565 | # endif /* !ksr1 */ | |
566 | #else | |
567 | ioctl (tty, TCXONC, 1); /* Simulate a ^Q. */ | |
568 | #endif /* !TERMIOS_TTY_DRIVER */ | |
569 | ||
1b17e766 | 570 | #endif /* 0 */ |
d60d9f65 SS |
571 | |
572 | return 0; | |
573 | } | |
574 | ||
575 | static void | |
9255ee31 | 576 | prepare_terminal_settings (meta_flag, oldtio, tiop) |
d60d9f65 | 577 | int meta_flag; |
9255ee31 | 578 | TIOTYPE oldtio, *tiop; |
d60d9f65 | 579 | { |
9255ee31 | 580 | readline_echoing_p = (oldtio.c_lflag & ECHO); |
d60d9f65 SS |
581 | |
582 | tiop->c_lflag &= ~(ICANON | ECHO); | |
583 | ||
9255ee31 EZ |
584 | if ((unsigned char) oldtio.c_cc[VEOF] != (unsigned char) _POSIX_VDISABLE) |
585 | _rl_eof_char = oldtio.c_cc[VEOF]; | |
d60d9f65 SS |
586 | |
587 | #if defined (USE_XON_XOFF) | |
588 | #if defined (IXANY) | |
589 | tiop->c_iflag &= ~(IXON | IXOFF | IXANY); | |
590 | #else | |
591 | /* `strict' Posix systems do not define IXANY. */ | |
592 | tiop->c_iflag &= ~(IXON | IXOFF); | |
593 | #endif /* IXANY */ | |
594 | #endif /* USE_XON_XOFF */ | |
595 | ||
596 | /* Only turn this off if we are using all 8 bits. */ | |
597 | if (((tiop->c_cflag & CSIZE) == CS8) || meta_flag) | |
598 | tiop->c_iflag &= ~(ISTRIP | INPCK); | |
599 | ||
600 | /* Make sure we differentiate between CR and NL on input. */ | |
601 | tiop->c_iflag &= ~(ICRNL | INLCR); | |
602 | ||
603 | #if !defined (HANDLE_SIGNALS) | |
604 | tiop->c_lflag &= ~ISIG; | |
605 | #else | |
606 | tiop->c_lflag |= ISIG; | |
607 | #endif | |
608 | ||
609 | tiop->c_cc[VMIN] = 1; | |
610 | tiop->c_cc[VTIME] = 0; | |
611 | ||
612 | #if defined (FLUSHO) | |
613 | if (OUTPUT_BEING_FLUSHED (tiop)) | |
614 | { | |
615 | tiop->c_lflag &= ~FLUSHO; | |
9255ee31 | 616 | oldtio.c_lflag &= ~FLUSHO; |
d60d9f65 SS |
617 | } |
618 | #endif | |
619 | ||
620 | /* Turn off characters that we need on Posix systems with job control, | |
621 | just to be sure. This includes ^Y and ^V. This should not really | |
622 | be necessary. */ | |
623 | #if defined (TERMIOS_TTY_DRIVER) && defined (_POSIX_VDISABLE) | |
624 | ||
625 | #if defined (VLNEXT) | |
626 | tiop->c_cc[VLNEXT] = _POSIX_VDISABLE; | |
627 | #endif | |
628 | ||
629 | #if defined (VDSUSP) | |
630 | tiop->c_cc[VDSUSP] = _POSIX_VDISABLE; | |
631 | #endif | |
632 | ||
633 | #endif /* TERMIOS_TTY_DRIVER && _POSIX_VDISABLE */ | |
634 | } | |
635 | #endif /* NEW_TTY_DRIVER */ | |
636 | ||
fd8be987 MM |
637 | /* Put the terminal in CBREAK mode so that we can detect key |
638 | presses. */ | |
639 | #if defined (NO_TTY_DRIVER) | |
640 | void | |
641 | rl_prep_terminal (meta_flag) | |
642 | int meta_flag; | |
643 | { | |
644 | readline_echoing_p = 1; | |
645 | } | |
646 | ||
647 | void | |
648 | rl_deprep_terminal () | |
649 | { | |
650 | } | |
651 | ||
652 | #else /* ! NO_TTY_DRIVER */ | |
d60d9f65 SS |
653 | /* Put the terminal in CBREAK mode so that we can detect key presses. */ |
654 | void | |
655 | rl_prep_terminal (meta_flag) | |
656 | int meta_flag; | |
657 | { | |
d60d9f65 SS |
658 | int tty; |
659 | TIOTYPE tio; | |
660 | ||
661 | if (terminal_prepped) | |
662 | return; | |
663 | ||
664 | /* Try to keep this function from being INTerrupted. */ | |
665 | block_sigint (); | |
666 | ||
667 | tty = fileno (rl_instream); | |
668 | ||
669 | if (get_tty_settings (tty, &tio) < 0) | |
670 | { | |
671 | release_sigint (); | |
672 | return; | |
673 | } | |
674 | ||
675 | otio = tio; | |
676 | ||
1b17e766 EZ |
677 | save_tty_chars (&otio); |
678 | ||
d60d9f65 SS |
679 | prepare_terminal_settings (meta_flag, otio, &tio); |
680 | ||
681 | if (set_tty_settings (tty, &tio) < 0) | |
682 | { | |
683 | release_sigint (); | |
684 | return; | |
685 | } | |
686 | ||
687 | if (_rl_enable_keypad) | |
688 | _rl_control_keypad (1); | |
689 | ||
690 | fflush (rl_outstream); | |
691 | terminal_prepped = 1; | |
9255ee31 | 692 | RL_SETSTATE(RL_STATE_TERMPREPPED); |
d60d9f65 SS |
693 | |
694 | release_sigint (); | |
d60d9f65 SS |
695 | } |
696 | ||
697 | /* Restore the terminal's normal settings and modes. */ | |
698 | void | |
699 | rl_deprep_terminal () | |
700 | { | |
d60d9f65 SS |
701 | int tty; |
702 | ||
703 | if (!terminal_prepped) | |
704 | return; | |
705 | ||
706 | /* Try to keep this function from being interrupted. */ | |
707 | block_sigint (); | |
708 | ||
709 | tty = fileno (rl_instream); | |
710 | ||
711 | if (_rl_enable_keypad) | |
712 | _rl_control_keypad (0); | |
713 | ||
714 | fflush (rl_outstream); | |
715 | ||
716 | if (set_tty_settings (tty, &otio) < 0) | |
717 | { | |
718 | release_sigint (); | |
719 | return; | |
720 | } | |
721 | ||
722 | terminal_prepped = 0; | |
9255ee31 | 723 | RL_UNSETSTATE(RL_STATE_TERMPREPPED); |
d60d9f65 SS |
724 | |
725 | release_sigint (); | |
d60d9f65 | 726 | } |
fd8be987 | 727 | #endif /* !NO_TTY_DRIVER */ |
d60d9f65 SS |
728 | \f |
729 | /* **************************************************************** */ | |
730 | /* */ | |
731 | /* Bogus Flow Control */ | |
732 | /* */ | |
733 | /* **************************************************************** */ | |
734 | ||
735 | int | |
736 | rl_restart_output (count, key) | |
737 | int count, key; | |
738 | { | |
fd8be987 MM |
739 | #if defined (__MINGW32__) |
740 | return 0; | |
741 | #else /* !__MING32__ */ | |
742 | ||
d60d9f65 SS |
743 | int fildes = fileno (rl_outstream); |
744 | #if defined (TIOCSTART) | |
745 | #if defined (apollo) | |
746 | ioctl (&fildes, TIOCSTART, 0); | |
747 | #else | |
748 | ioctl (fildes, TIOCSTART, 0); | |
749 | #endif /* apollo */ | |
750 | ||
751 | #else /* !TIOCSTART */ | |
752 | # if defined (TERMIOS_TTY_DRIVER) | |
753 | # if defined (__ksr1__) | |
754 | if (ksrflow) | |
755 | { | |
756 | ksrflow = 0; | |
757 | tcflow (fildes, TCOON); | |
758 | } | |
759 | # else /* !ksr1 */ | |
760 | tcflow (fildes, TCOON); /* Simulate a ^Q. */ | |
761 | # endif /* !ksr1 */ | |
762 | # else /* !TERMIOS_TTY_DRIVER */ | |
763 | # if defined (TCXONC) | |
764 | ioctl (fildes, TCXONC, TCOON); | |
765 | # endif /* TCXONC */ | |
766 | # endif /* !TERMIOS_TTY_DRIVER */ | |
767 | #endif /* !TIOCSTART */ | |
768 | ||
769 | return 0; | |
fd8be987 | 770 | #endif /* !__MINGW32__ */ |
d60d9f65 SS |
771 | } |
772 | ||
773 | int | |
774 | rl_stop_output (count, key) | |
775 | int count, key; | |
776 | { | |
fd8be987 MM |
777 | #if defined (__MINGW32__) |
778 | return 0; | |
779 | #else | |
780 | ||
d60d9f65 SS |
781 | int fildes = fileno (rl_instream); |
782 | ||
783 | #if defined (TIOCSTOP) | |
784 | # if defined (apollo) | |
785 | ioctl (&fildes, TIOCSTOP, 0); | |
786 | # else | |
787 | ioctl (fildes, TIOCSTOP, 0); | |
788 | # endif /* apollo */ | |
789 | #else /* !TIOCSTOP */ | |
790 | # if defined (TERMIOS_TTY_DRIVER) | |
791 | # if defined (__ksr1__) | |
792 | ksrflow = 1; | |
793 | # endif /* ksr1 */ | |
794 | tcflow (fildes, TCOOFF); | |
795 | # else | |
796 | # if defined (TCXONC) | |
797 | ioctl (fildes, TCXONC, TCOON); | |
798 | # endif /* TCXONC */ | |
799 | # endif /* !TERMIOS_TTY_DRIVER */ | |
800 | #endif /* !TIOCSTOP */ | |
801 | ||
802 | return 0; | |
fd8be987 | 803 | #endif /* !__MINGW32__ */ |
d60d9f65 SS |
804 | } |
805 | ||
806 | /* **************************************************************** */ | |
807 | /* */ | |
808 | /* Default Key Bindings */ | |
809 | /* */ | |
810 | /* **************************************************************** */ | |
9255ee31 EZ |
811 | |
812 | /* Set the system's default editing characters to their readline equivalents | |
813 | in KMAP. Should be static, now that we have rl_tty_set_default_bindings. */ | |
d60d9f65 SS |
814 | void |
815 | rltty_set_default_bindings (kmap) | |
816 | Keymap kmap; | |
817 | { | |
fd8be987 | 818 | #if !defined (NO_TTY_DRIVER) |
d60d9f65 SS |
819 | TIOTYPE ttybuff; |
820 | int tty = fileno (rl_instream); | |
821 | ||
822 | #if defined (NEW_TTY_DRIVER) | |
823 | ||
824 | #define SET_SPECIAL(sc, func) \ | |
825 | do \ | |
826 | { \ | |
827 | int ic; \ | |
828 | ic = sc; \ | |
9255ee31 EZ |
829 | if (ic != -1 && kmap[(unsigned char)ic].type == ISFUNC) \ |
830 | kmap[(unsigned char)ic].function = func; \ | |
d60d9f65 SS |
831 | } \ |
832 | while (0) | |
833 | ||
834 | if (get_tty_settings (tty, &ttybuff) == 0) | |
835 | { | |
836 | if (ttybuff.flags & SGTTY_SET) | |
837 | { | |
838 | SET_SPECIAL (ttybuff.sgttyb.sg_erase, rl_rubout); | |
839 | SET_SPECIAL (ttybuff.sgttyb.sg_kill, rl_unix_line_discard); | |
840 | } | |
841 | ||
842 | # if defined (TIOCGLTC) | |
843 | if (ttybuff.flags & LTCHARS_SET) | |
844 | { | |
845 | SET_SPECIAL (ttybuff.ltchars.t_werasc, rl_unix_word_rubout); | |
846 | SET_SPECIAL (ttybuff.ltchars.t_lnextc, rl_quoted_insert); | |
847 | } | |
848 | # endif /* TIOCGLTC */ | |
849 | } | |
850 | ||
851 | #else /* !NEW_TTY_DRIVER */ | |
852 | ||
853 | #define SET_SPECIAL(sc, func) \ | |
854 | do \ | |
855 | { \ | |
856 | unsigned char uc; \ | |
857 | uc = ttybuff.c_cc[sc]; \ | |
858 | if (uc != (unsigned char)_POSIX_VDISABLE && kmap[uc].type == ISFUNC) \ | |
859 | kmap[uc].function = func; \ | |
860 | } \ | |
861 | while (0) | |
862 | ||
863 | if (get_tty_settings (tty, &ttybuff) == 0) | |
864 | { | |
865 | SET_SPECIAL (VERASE, rl_rubout); | |
866 | SET_SPECIAL (VKILL, rl_unix_line_discard); | |
867 | ||
868 | # if defined (VLNEXT) && defined (TERMIOS_TTY_DRIVER) | |
869 | SET_SPECIAL (VLNEXT, rl_quoted_insert); | |
870 | # endif /* VLNEXT && TERMIOS_TTY_DRIVER */ | |
871 | ||
872 | # if defined (VWERASE) && defined (TERMIOS_TTY_DRIVER) | |
873 | SET_SPECIAL (VWERASE, rl_unix_word_rubout); | |
874 | # endif /* VWERASE && TERMIOS_TTY_DRIVER */ | |
875 | } | |
876 | #endif /* !NEW_TTY_DRIVER */ | |
fd8be987 | 877 | #endif |
d60d9f65 | 878 | } |
1b17e766 | 879 | |
9255ee31 EZ |
880 | /* New public way to set the system default editing chars to their readline |
881 | equivalents. */ | |
882 | void | |
883 | rl_tty_set_default_bindings (kmap) | |
884 | Keymap kmap; | |
885 | { | |
886 | rltty_set_default_bindings (kmap); | |
887 | } | |
888 | ||
1b17e766 EZ |
889 | #if defined (HANDLE_SIGNALS) |
890 | ||
fd8be987 | 891 | #if defined (NEW_TTY_DRIVER) || defined (NO_TTY_DRIVER) |
1b17e766 EZ |
892 | int |
893 | _rl_disable_tty_signals () | |
894 | { | |
895 | return 0; | |
896 | } | |
897 | ||
898 | int | |
899 | _rl_restore_tty_signals () | |
900 | { | |
901 | return 0; | |
902 | } | |
903 | #else | |
904 | ||
905 | static TIOTYPE sigstty, nosigstty; | |
906 | static int tty_sigs_disabled = 0; | |
907 | ||
908 | int | |
909 | _rl_disable_tty_signals () | |
910 | { | |
911 | if (tty_sigs_disabled) | |
912 | return 0; | |
913 | ||
914 | if (_get_tty_settings (fileno (rl_instream), &sigstty) < 0) | |
915 | return -1; | |
916 | ||
917 | nosigstty = sigstty; | |
918 | ||
919 | nosigstty.c_lflag &= ~ISIG; | |
9255ee31 | 920 | nosigstty.c_iflag &= ~IXON; |
1b17e766 EZ |
921 | |
922 | if (_set_tty_settings (fileno (rl_instream), &nosigstty) < 0) | |
923 | return (_set_tty_settings (fileno (rl_instream), &sigstty)); | |
924 | ||
925 | tty_sigs_disabled = 1; | |
926 | return 0; | |
927 | } | |
928 | ||
929 | int | |
930 | _rl_restore_tty_signals () | |
931 | { | |
9255ee31 EZ |
932 | int r; |
933 | ||
1b17e766 EZ |
934 | if (tty_sigs_disabled == 0) |
935 | return 0; | |
936 | ||
9255ee31 EZ |
937 | r = _set_tty_settings (fileno (rl_instream), &sigstty); |
938 | ||
939 | if (r == 0) | |
940 | tty_sigs_disabled = 0; | |
941 | ||
942 | return r; | |
1b17e766 EZ |
943 | } |
944 | #endif /* !NEW_TTY_DRIVER */ | |
945 | ||
946 | #endif /* HANDLE_SIGNALS */ |