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rltty.c

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1/* rltty.c -- functions to prepare and restore the terminal for readline's-
2 use. */-
3-
4/* Copyright (C) 1992-2017 Free Software Foundation, Inc.-
5-
6 This file is part of the GNU Readline Library (Readline), a library-
7 for reading lines of text with interactive input and history editing.-
8-
9 Readline is free software: you can redistribute it and/or modify-
10 it under the terms of the GNU General Public License as published by-
11 the Free Software Foundation, either version 3 of the License, or-
12 (at your option) any later version.-
13-
14 Readline is distributed in the hope that it will be useful,-
15 but WITHOUT ANY WARRANTY; without even the implied warranty of-
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the-
17 GNU General Public License for more details.-
18-
19 You should have received a copy of the GNU General Public License-
20 along with Readline. If not, see <http://www.gnu.org/licenses/>.-
21*/-
22-
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-
40#include "rltty.h"-
41#if defined (HAVE_SYS_IOCTL_H)-
42# include <sys/ioctl.h> /* include for declaration of ioctl */-
43#endif-
44-
45#include "readline.h"-
46#include "rlprivate.h"-
47-
48#if !defined (errno)-
49extern int errno;-
50#endif /* !errno */-
51-
52rl_vintfunc_t *rl_prep_term_function = rl_prep_terminal;-
53rl_voidfunc_t *rl_deprep_term_function = rl_deprep_terminal;-
54-
55static void set_winsize PARAMS((int));-
56-
57/* **************************************************************** */-
58/* */-
59/* Saving and Restoring the TTY */-
60/* */-
61/* **************************************************************** */-
62-
63/* Non-zero means that the terminal is in a prepped state. There are several-
64 flags that are OR'd in to denote whether or not we have sent various-
65 init strings to the terminal. */-
66#define TPX_PREPPED 0x01-
67#define TPX_BRACKPASTE 0x02-
68#define TPX_METAKEY 0x04-
69-
70static int terminal_prepped;-
71-
72static _RL_TTY_CHARS _rl_tty_chars, _rl_last_tty_chars;-
73-
74/* If non-zero, means that this process has called tcflow(fd, TCOOFF)-
75 and output is suspended. */-
76#if defined (__ksr1__)-
77static int ksrflow;-
78#endif-
79-
80/* Dummy call to force a backgrounded readline to stop before it tries-
81 to get the tty settings. */-
82static void-
83set_winsize (tty)-
84 int tty;-
85{-
86#if defined (TIOCGWINSZ)-
87 struct winsize w;-
88-
89 if (ioctl (tty, TIOCGWINSZ, &w) == 0)
ioctl (tty, 0x5413 , &w) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
90 (void) ioctl (tty, TIOCSWINSZ, &w);
never executed: (void) ioctl (tty, 0x5414 , &w);
0
91#endif /* TIOCGWINSZ */-
92}
never executed: end of block
0
93-
94#if defined (NO_TTY_DRIVER)-
95/* Nothing */-
96#elif defined (NEW_TTY_DRIVER)-
97-
98/* Values for the `flags' field of a struct bsdtty. This tells which-
99 elements of the struct bsdtty have been fetched from the system and-
100 are valid. */-
101#define SGTTY_SET 0x01-
102#define LFLAG_SET 0x02-
103#define TCHARS_SET 0x04-
104#define LTCHARS_SET 0x08-
105-
106struct bsdtty {-
107 struct sgttyb sgttyb; /* Basic BSD tty driver information. */-
108 int lflag; /* Local mode flags, like LPASS8. */-
109#if defined (TIOCGETC)-
110 struct tchars tchars; /* Terminal special characters, including ^S and ^Q. */-
111#endif-
112#if defined (TIOCGLTC)-
113 struct ltchars ltchars; /* 4.2 BSD editing characters */-
114#endif-
115 int flags; /* Bitmap saying which parts of the struct are valid. */-
116};-
117-
118#define TIOTYPE struct bsdtty-
119-
120static TIOTYPE otio;-
121-
122static void save_tty_chars PARAMS((TIOTYPE *));-
123static int _get_tty_settings PARAMS((int, TIOTYPE *));-
124static int get_tty_settings PARAMS((int, TIOTYPE *));-
125static int _set_tty_settings PARAMS((int, TIOTYPE *));-
126static int set_tty_settings PARAMS((int, TIOTYPE *));-
127-
128static void prepare_terminal_settings PARAMS((int, TIOTYPE, TIOTYPE *));-
129-
130static void set_special_char PARAMS((Keymap, TIOTYPE *, int, rl_command_func_t *));-
131-
132static void-
133save_tty_chars (TIOTYPE *tiop)-
134{-
135 _rl_last_tty_chars = _rl_tty_chars;-
136-
137 if (tiop->flags & SGTTY_SET)-
138 {-
139 _rl_tty_chars.t_erase = tiop->sgttyb.sg_erase;-
140 _rl_tty_chars.t_kill = tiop->sgttyb.sg_kill;-
141 }-
142-
143 if (tiop->flags & TCHARS_SET)-
144 {-
145 _rl_intr_char = _rl_tty_chars.t_intr = tiop->tchars.t_intrc;-
146 _rl_quit_char = _rl_tty_chars.t_quit = tiop->tchars.t_quitc;-
147-
148 _rl_tty_chars.t_start = tiop->tchars.t_startc;-
149 _rl_tty_chars.t_stop = tiop->tchars.t_stopc;-
150 _rl_tty_chars.t_eof = tiop->tchars.t_eofc;-
151 _rl_tty_chars.t_eol = '\n';-
152 _rl_tty_chars.t_eol2 = tiop->tchars.t_brkc;-
153 }-
154-
155 if (tiop->flags & LTCHARS_SET)-
156 {-
157 _rl_susp_char = _rl_tty_chars.t_susp = tiop->ltchars.t_suspc;-
158-
159 _rl_tty_chars.t_dsusp = tiop->ltchars.t_dsuspc;-
160 _rl_tty_chars.t_reprint = tiop->ltchars.t_rprntc;-
161 _rl_tty_chars.t_flush = tiop->ltchars.t_flushc;-
162 _rl_tty_chars.t_werase = tiop->ltchars.t_werasc;-
163 _rl_tty_chars.t_lnext = tiop->ltchars.t_lnextc;-
164 }-
165-
166 _rl_tty_chars.t_status = -1;-
167}-
168-
169static int-
170get_tty_settings (int tty, TIOTYPE *tiop)-
171{-
172 set_winsize (tty);-
173-
174 tiop->flags = tiop->lflag = 0;-
175-
176 errno = 0;-
177 if (ioctl (tty, TIOCGETP, &(tiop->sgttyb)) < 0)-
178 return -1;-
179 tiop->flags |= SGTTY_SET;-
180-
181#if defined (TIOCLGET)-
182 if (ioctl (tty, TIOCLGET, &(tiop->lflag)) == 0)-
183 tiop->flags |= LFLAG_SET;-
184#endif-
185-
186#if defined (TIOCGETC)-
187 if (ioctl (tty, TIOCGETC, &(tiop->tchars)) == 0)-
188 tiop->flags |= TCHARS_SET;-
189#endif-
190-
191#if defined (TIOCGLTC)-
192 if (ioctl (tty, TIOCGLTC, &(tiop->ltchars)) == 0)-
193 tiop->flags |= LTCHARS_SET;-
194#endif-
195-
196 return 0;-
197}-
198-
199static int-
200set_tty_settings (int tty, TIOTYPE *tiop)-
201{-
202 if (tiop->flags & SGTTY_SET)-
203 {-
204 ioctl (tty, TIOCSETN, &(tiop->sgttyb));-
205 tiop->flags &= ~SGTTY_SET;-
206 }-
207 _rl_echoing_p = 1;-
208-
209#if defined (TIOCLSET)-
210 if (tiop->flags & LFLAG_SET)-
211 {-
212 ioctl (tty, TIOCLSET, &(tiop->lflag));-
213 tiop->flags &= ~LFLAG_SET;-
214 }-
215#endif-
216-
217#if defined (TIOCSETC)-
218 if (tiop->flags & TCHARS_SET)-
219 {-
220 ioctl (tty, TIOCSETC, &(tiop->tchars));-
221 tiop->flags &= ~TCHARS_SET;-
222 }-
223#endif-
224-
225#if defined (TIOCSLTC)-
226 if (tiop->flags & LTCHARS_SET)-
227 {-
228 ioctl (tty, TIOCSLTC, &(tiop->ltchars));-
229 tiop->flags &= ~LTCHARS_SET;-
230 }-
231#endif-
232-
233 return 0;-
234}-
235-
236static void-
237prepare_terminal_settings (int meta_flag, TIOTYPE oldtio, TIOTYPE *tiop)-
238{-
239 _rl_echoing_p = (oldtio.sgttyb.sg_flags & ECHO);-
240 _rl_echoctl = (oldtio.sgttyb.sg_flags & ECHOCTL);-
241-
242 /* Copy the original settings to the structure we're going to use for-
243 our settings. */-
244 tiop->sgttyb = oldtio.sgttyb;-
245 tiop->lflag = oldtio.lflag;-
246#if defined (TIOCGETC)-
247 tiop->tchars = oldtio.tchars;-
248#endif-
249#if defined (TIOCGLTC)-
250 tiop->ltchars = oldtio.ltchars;-
251#endif-
252 tiop->flags = oldtio.flags;-
253-
254 /* First, the basic settings to put us into character-at-a-time, no-echo-
255 input mode. */-
256 tiop->sgttyb.sg_flags &= ~(ECHO | CRMOD);-
257 tiop->sgttyb.sg_flags |= CBREAK;-
258-
259 /* If this terminal doesn't care how the 8th bit is used, then we can-
260 use it for the meta-key. If only one of even or odd parity is-
261 specified, then the terminal is using parity, and we cannot. */-
262#if !defined (ANYP)-
263# define ANYP (EVENP | ODDP)-
264#endif-
265 if (((oldtio.sgttyb.sg_flags & ANYP) == ANYP) ||-
266 ((oldtio.sgttyb.sg_flags & ANYP) == 0))-
267 {-
268 tiop->sgttyb.sg_flags |= ANYP;-
269-
270 /* Hack on local mode flags if we can. */-
271#if defined (TIOCLGET)-
272# if defined (LPASS8)-
273 tiop->lflag |= LPASS8;-
274# endif /* LPASS8 */-
275#endif /* TIOCLGET */-
276 }-
277-
278#if defined (TIOCGETC)-
279# if defined (USE_XON_XOFF)-
280 /* Get rid of terminal output start and stop characters. */-
281 tiop->tchars.t_stopc = -1; /* C-s */-
282 tiop->tchars.t_startc = -1; /* C-q */-
283-
284 /* If there is an XON character, bind it to restart the output. */-
285 if (oldtio.tchars.t_startc != -1)-
286 rl_bind_key (oldtio.tchars.t_startc, rl_restart_output);-
287# endif /* USE_XON_XOFF */-
288-
289 /* If there is an EOF char, bind _rl_eof_char to it. */-
290 if (oldtio.tchars.t_eofc != -1)-
291 _rl_eof_char = oldtio.tchars.t_eofc;-
292-
293# if defined (NO_KILL_INTR)-
294 /* Get rid of terminal-generated SIGQUIT and SIGINT. */-
295 tiop->tchars.t_quitc = -1; /* C-\ */-
296 tiop->tchars.t_intrc = -1; /* C-c */-
297# endif /* NO_KILL_INTR */-
298#endif /* TIOCGETC */-
299-
300#if defined (TIOCGLTC)-
301 /* Make the interrupt keys go away. Just enough to make people happy. */-
302 tiop->ltchars.t_dsuspc = -1; /* C-y */-
303 tiop->ltchars.t_lnextc = -1; /* C-v */-
304#endif /* TIOCGLTC */-
305}-
306-
307#else /* !defined (NEW_TTY_DRIVER) */-
308-
309#if !defined (VMIN)-
310# define VMIN VEOF-
311#endif-
312-
313#if !defined (VTIME)-
314# define VTIME VEOL-
315#endif-
316-
317#if defined (TERMIOS_TTY_DRIVER)-
318# define TIOTYPE struct termios-
319# define DRAIN_OUTPUT(fd) tcdrain (fd)-
320# define GETATTR(tty, tiop) (tcgetattr (tty, tiop))-
321# ifdef M_UNIX-
322# define SETATTR(tty, tiop) (tcsetattr (tty, TCSANOW, tiop))-
323# else-
324# define SETATTR(tty, tiop) (tcsetattr (tty, TCSADRAIN, tiop))-
325# endif /* !M_UNIX */-
326#else-
327# define TIOTYPE struct termio-
328# define DRAIN_OUTPUT(fd)-
329# define GETATTR(tty, tiop) (ioctl (tty, TCGETA, tiop))-
330# define SETATTR(tty, tiop) (ioctl (tty, TCSETAW, tiop))-
331#endif /* !TERMIOS_TTY_DRIVER */-
332-
333static TIOTYPE otio;-
334-
335static void save_tty_chars PARAMS((TIOTYPE *));-
336static int _get_tty_settings PARAMS((int, TIOTYPE *));-
337static int get_tty_settings PARAMS((int, TIOTYPE *));-
338static int _set_tty_settings PARAMS((int, TIOTYPE *));-
339static int set_tty_settings PARAMS((int, TIOTYPE *));-
340-
341static void prepare_terminal_settings PARAMS((int, TIOTYPE, TIOTYPE *));-
342-
343static void set_special_char PARAMS((Keymap, TIOTYPE *, int, rl_command_func_t *));-
344static void _rl_bind_tty_special_chars PARAMS((Keymap, TIOTYPE));-
345-
346#if defined (FLUSHO)-
347# define OUTPUT_BEING_FLUSHED(tp) (tp->c_lflag & FLUSHO)-
348#else-
349# define OUTPUT_BEING_FLUSHED(tp) 0-
350#endif-
351-
352static void-
353save_tty_chars (TIOTYPE *tiop)-
354{-
355 _rl_last_tty_chars = _rl_tty_chars;-
356-
357 _rl_tty_chars.t_eof = tiop->c_cc[VEOF];-
358 _rl_tty_chars.t_eol = tiop->c_cc[VEOL];-
359#ifdef VEOL2-
360 _rl_tty_chars.t_eol2 = tiop->c_cc[VEOL2];-
361#endif-
362 _rl_tty_chars.t_erase = tiop->c_cc[VERASE];-
363#ifdef VWERASE-
364 _rl_tty_chars.t_werase = tiop->c_cc[VWERASE];-
365#endif-
366 _rl_tty_chars.t_kill = tiop->c_cc[VKILL];-
367#ifdef VREPRINT-
368 _rl_tty_chars.t_reprint = tiop->c_cc[VREPRINT];-
369#endif-
370 _rl_intr_char = _rl_tty_chars.t_intr = tiop->c_cc[VINTR];-
371 _rl_quit_char = _rl_tty_chars.t_quit = tiop->c_cc[VQUIT];-
372#ifdef VSUSP-
373 _rl_susp_char = _rl_tty_chars.t_susp = tiop->c_cc[VSUSP];-
374#endif-
375#ifdef VDSUSP-
376 _rl_tty_chars.t_dsusp = tiop->c_cc[VDSUSP];-
377#endif-
378#ifdef VSTART-
379 _rl_tty_chars.t_start = tiop->c_cc[VSTART];-
380#endif-
381#ifdef VSTOP-
382 _rl_tty_chars.t_stop = tiop->c_cc[VSTOP];-
383#endif-
384#ifdef VLNEXT-
385 _rl_tty_chars.t_lnext = tiop->c_cc[VLNEXT];-
386#endif-
387#ifdef VDISCARD-
388 _rl_tty_chars.t_flush = tiop->c_cc[VDISCARD];-
389#endif-
390#ifdef VSTATUS-
391 _rl_tty_chars.t_status = tiop->c_cc[VSTATUS];-
392#endif-
393}
never executed: end of block
0
394-
395#if defined (_AIX) || defined (_AIX41)-
396/* Currently this is only used on AIX */-
397static void-
398rltty_warning (char *msg)-
399 char *msg;-
400{-
401 _rl_errmsg ("warning: %s", msg);-
402}-
403#endif-
404-
405#if defined (_AIX)-
406void-
407setopost (TIOTYPE *tp)-
408{-
409 if ((tp->c_oflag & OPOST) == 0)-
410 {-
411 _rl_errmsg ("warning: turning on OPOST for terminal\r");-
412 tp->c_oflag |= OPOST|ONLCR;-
413 }-
414}-
415#endif-
416-
417static int-
418_get_tty_settings (int tty, TIOTYPE *tiop)-
419{-
420 int ioctl_ret;-
421-
422 while (1)-
423 {-
424 ioctl_ret = GETATTR (tty, tiop);-
425 if (ioctl_ret < 0)
ioctl_ret < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
426 {-
427 if (errno != EINTR)
(*__errno_location ()) != 4Description
TRUEnever evaluated
FALSEnever evaluated
0
428 return -1;
never executed: return -1;
0
429 else-
430 continue;
never executed: continue;
0
431 }-
432 if (OUTPUT_BEING_FLUSHED (tiop))
(tiop->c_lflag & 0010000 )Description
TRUEnever evaluated
FALSEnever evaluated
0
433 {-
434#if defined (FLUSHO)-
435 _rl_errmsg ("warning: turning off output flushing");-
436 tiop->c_lflag &= ~FLUSHO;-
437 break;
never executed: break;
0
438#else-
439 continue;-
440#endif-
441 }-
442 break;
never executed: break;
0
443 }-
444-
445 return 0;
never executed: return 0;
0
446}-
447-
448static int-
449get_tty_settings (int tty, TIOTYPE *tiop)-
450{-
451 set_winsize (tty);-
452-
453 errno = 0;-
454 if (_get_tty_settings (tty, tiop) < 0)
_get_tty_setti...tty, tiop) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
455 return -1;
never executed: return -1;
0
456-
457#if defined (_AIX)-
458 setopost(tiop);-
459#endif-
460-
461 return 0;
never executed: return 0;
0
462}-
463-
464static int-
465_set_tty_settings (int tty, TIOTYPE *tiop)-
466{-
467 while (SETATTR (tty, tiop) < 0)
(tcsetattr (tt...1 , tiop)) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
468 {-
469 if (errno != EINTR)
(*__errno_location ()) != 4Description
TRUEnever evaluated
FALSEnever evaluated
0
470 return -1;
never executed: return -1;
0
471 errno = 0;-
472 }
never executed: end of block
0
473 return 0;
never executed: return 0;
0
474}-
475-
476static int-
477set_tty_settings (int tty, TIOTYPE *tiop)-
478{-
479 if (_set_tty_settings (tty, tiop) < 0)
_set_tty_setti...tty, tiop) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
480 return -1;
never executed: return -1;
0
481 -
482#if 0-
483-
484#if defined (TERMIOS_TTY_DRIVER)-
485# if defined (__ksr1__)-
486 if (ksrflow)-
487 {-
488 ksrflow = 0;-
489 tcflow (tty, TCOON);-
490 }-
491# else /* !ksr1 */-
492 tcflow (tty, TCOON); /* Simulate a ^Q. */-
493# endif /* !ksr1 */-
494#else-
495 ioctl (tty, TCXONC, 1); /* Simulate a ^Q. */-
496#endif /* !TERMIOS_TTY_DRIVER */-
497-
498#endif /* 0 */-
499-
500 return 0;
never executed: return 0;
0
501}-
502-
503static void-
504prepare_terminal_settings (int meta_flag, TIOTYPE oldtio, TIOTYPE *tiop)-
505{-
506 int sc;-
507 Keymap kmap;-
508-
509 _rl_echoing_p = (oldtio.c_lflag & ECHO);-
510#if defined (ECHOCTL)-
511 _rl_echoctl = (oldtio.c_lflag & ECHOCTL);-
512#endif-
513-
514 tiop->c_lflag &= ~(ICANON | ECHO);-
515-
516 if ((unsigned char) oldtio.c_cc[VEOF] != (unsigned char) _POSIX_VDISABLE)
(unsigned char...ned char) '\0'Description
TRUEnever evaluated
FALSEnever evaluated
0
517 _rl_eof_char = oldtio.c_cc[VEOF];
never executed: _rl_eof_char = oldtio.c_cc[ 4 ];
0
518-
519#if defined (USE_XON_XOFF)-
520#if defined (IXANY)-
521 tiop->c_iflag &= ~(IXON | IXANY);-
522#else-
523 /* `strict' Posix systems do not define IXANY. */-
524 tiop->c_iflag &= ~IXON;-
525#endif /* IXANY */-
526#endif /* USE_XON_XOFF */-
527-
528 /* Only turn this off if we are using all 8 bits. */-
529 if (((tiop->c_cflag & CSIZE) == CS8) || meta_flag)
((tiop->c_cfla...) == 0000060 )Description
TRUEnever evaluated
FALSEnever evaluated
meta_flagDescription
TRUEnever evaluated
FALSEnever evaluated
0
530 tiop->c_iflag &= ~(ISTRIP | INPCK);
never executed: tiop->c_iflag &= ~( 0000040 | 0000020 );
0
531-
532 /* Make sure we differentiate between CR and NL on input. */-
533 tiop->c_iflag &= ~(ICRNL | INLCR);-
534-
535#if !defined (HANDLE_SIGNALS)-
536 tiop->c_lflag &= ~ISIG;-
537#else-
538 tiop->c_lflag |= ISIG;-
539#endif-
540-
541 tiop->c_cc[VMIN] = 1;-
542 tiop->c_cc[VTIME] = 0;-
543-
544#if defined (FLUSHO)-
545 if (OUTPUT_BEING_FLUSHED (tiop))
(tiop->c_lflag & 0010000 )Description
TRUEnever evaluated
FALSEnever evaluated
0
546 {-
547 tiop->c_lflag &= ~FLUSHO;-
548 oldtio.c_lflag &= ~FLUSHO;-
549 }
never executed: end of block
0
550#endif-
551-
552 /* Turn off characters that we need on Posix systems with job control,-
553 just to be sure. This includes ^Y and ^V. This should not really-
554 be necessary. */-
555#if defined (TERMIOS_TTY_DRIVER) && defined (_POSIX_VDISABLE)-
556-
557#if defined (VLNEXT)-
558 tiop->c_cc[VLNEXT] = _POSIX_VDISABLE;-
559#endif-
560-
561#if defined (VDSUSP)-
562 tiop->c_cc[VDSUSP] = _POSIX_VDISABLE;-
563#endif-
564-
565 /* Conditionally disable some other tty special characters if there is a-
566 key binding for them in the current keymap. Readline ordinarily doesn't-
567 bind these characters, but an application or user might. */-
568#if defined (VI_MODE)-
569 kmap = (rl_editing_mode == vi_mode) ? vi_insertion_keymap : _rl_keymap;
(rl_editing_mode == 0)Description
TRUEnever evaluated
FALSEnever evaluated
0
570#else-
571 kmap = _rl_keymap;-
572#endif-
573#if defined (VDISCARD)-
574 sc = tiop->c_cc[VDISCARD];-
575 if (sc != _POSIX_VDISABLE && kmap[(unsigned char)sc].type == ISFUNC)
sc != '\0'Description
TRUEnever evaluated
FALSEnever evaluated
kmap[(unsigned...)sc].type == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
576 tiop->c_cc[VDISCARD] = _POSIX_VDISABLE;
never executed: tiop->c_cc[ 13 ] = '\0' ;
0
577#endif /* VDISCARD */-
578-
579#endif /* TERMIOS_TTY_DRIVER && _POSIX_VDISABLE */-
580}
never executed: end of block
0
581#endif /* !NEW_TTY_DRIVER */-
582-
583/* Put the terminal in CBREAK mode so that we can detect key presses. */-
584#if defined (NO_TTY_DRIVER)-
585void-
586rl_prep_terminal (int meta_flag)-
587{-
588 _rl_echoing_p = 1;-
589}-
590-
591void-
592rl_deprep_terminal (void)-
593{-
594}-
595-
596#else /* ! NO_TTY_DRIVER */-
597void-
598rl_prep_terminal (int meta_flag)-
599{-
600 int tty, nprep;-
601 TIOTYPE tio;-
602-
603 if (terminal_prepped)
terminal_preppedDescription
TRUEnever evaluated
FALSEnever evaluated
0
604 return;
never executed: return;
0
605-
606 /* Try to keep this function from being INTerrupted. */-
607 _rl_block_sigint ();-
608-
609 tty = rl_instream ? fileno (rl_instream) : fileno (stdin);
rl_instreamDescription
TRUEnever evaluated
FALSEnever evaluated
0
610-
611 if (get_tty_settings (tty, &tio) < 0)
get_tty_settin...tty, &tio) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
612 {-
613#if defined (ENOTSUP)-
614 /* MacOS X and Linux, at least, lie about the value of errno if-
615 tcgetattr fails. */-
616 if (errno == ENOTTY || errno == EINVAL || errno == ENOTSUP)
(*__errno_location ()) == 25Description
TRUEnever evaluated
FALSEnever evaluated
(*__errno_location ()) == 22Description
TRUEnever evaluated
FALSEnever evaluated
(*__errno_location ()) == 95Description
TRUEnever evaluated
FALSEnever evaluated
0
617#else-
618 if (errno == ENOTTY || errno == EINVAL)-
619#endif-
620 _rl_echoing_p = 1; /* XXX */
never executed: _rl_echoing_p = 1;
0
621-
622 _rl_release_sigint ();-
623 return;
never executed: return;
0
624 }-
625-
626 otio = tio;-
627-
628 if (_rl_bind_stty_chars)
_rl_bind_stty_charsDescription
TRUEnever evaluated
FALSEnever evaluated
0
629 {-
630#if defined (VI_MODE)-
631 /* If editing in vi mode, make sure we restore the bindings in the-
632 insertion keymap no matter what keymap we ended up in. */-
633 if (rl_editing_mode == vi_mode)
rl_editing_mode == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
634 rl_tty_unset_default_bindings (vi_insertion_keymap);
never executed: rl_tty_unset_default_bindings (vi_insertion_keymap);
0
635 else-
636#endif-
637 rl_tty_unset_default_bindings (_rl_keymap);
never executed: rl_tty_unset_default_bindings (_rl_keymap);
0
638 }-
639 save_tty_chars (&otio);-
640 RL_SETSTATE(RL_STATE_TTYCSAVED);-
641 if (_rl_bind_stty_chars)
_rl_bind_stty_charsDescription
TRUEnever evaluated
FALSEnever evaluated
0
642 {-
643#if defined (VI_MODE)-
644 /* If editing in vi mode, make sure we set the bindings in the-
645 insertion keymap no matter what keymap we ended up in. */-
646 if (rl_editing_mode == vi_mode)
rl_editing_mode == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
647 _rl_bind_tty_special_chars (vi_insertion_keymap, tio);
never executed: _rl_bind_tty_special_chars (vi_insertion_keymap, tio);
0
648 else-
649#endif-
650 _rl_bind_tty_special_chars (_rl_keymap, tio);
never executed: _rl_bind_tty_special_chars (_rl_keymap, tio);
0
651 }-
652-
653 prepare_terminal_settings (meta_flag, otio, &tio);-
654-
655 if (set_tty_settings (tty, &tio) < 0)
set_tty_settin...tty, &tio) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
656 {-
657 _rl_release_sigint ();-
658 return;
never executed: return;
0
659 }-
660-
661 if (_rl_enable_keypad)
_rl_enable_keypadDescription
TRUEnever evaluated
FALSEnever evaluated
0
662 _rl_control_keypad (1);
never executed: _rl_control_keypad (1);
0
663-
664 nprep = TPX_PREPPED;-
665-
666 if (_rl_enable_bracketed_paste)
_rl_enable_bracketed_pasteDescription
TRUEnever evaluated
FALSEnever evaluated
0
667 {-
668 fprintf (rl_outstream, BRACK_PASTE_INIT);-
669 nprep |= TPX_BRACKPASTE;-
670 }
never executed: end of block
0
671-
672 fflush (rl_outstream);-
673 terminal_prepped = nprep;-
674 RL_SETSTATE(RL_STATE_TERMPREPPED);-
675-
676 _rl_release_sigint ();-
677}
never executed: end of block
0
678-
679/* Restore the terminal's normal settings and modes. */-
680void-
681rl_deprep_terminal (void)-
682{-
683 int tty;-
684-
685 if (terminal_prepped == 0)
terminal_prepped == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
686 return;
never executed: return;
0
687-
688 /* Try to keep this function from being interrupted. */-
689 _rl_block_sigint ();-
690-
691 tty = rl_instream ? fileno (rl_instream) : fileno (stdin);
rl_instreamDescription
TRUEnever evaluated
FALSEnever evaluated
0
692-
693 if (terminal_prepped & TPX_BRACKPASTE)
terminal_prepped & 0x02Description
TRUEnever evaluated
FALSEnever evaluated
0
694 fprintf (rl_outstream, BRACK_PASTE_FINI);
never executed: fprintf (rl_outstream, "\033[?2004l\r");
0
695-
696 if (_rl_enable_keypad)
_rl_enable_keypadDescription
TRUEnever evaluated
FALSEnever evaluated
0
697 _rl_control_keypad (0);
never executed: _rl_control_keypad (0);
0
698-
699 fflush (rl_outstream);-
700-
701 if (set_tty_settings (tty, &otio) < 0)
set_tty_settin...ty, &otio) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
702 {-
703 _rl_release_sigint ();-
704 return;
never executed: return;
0
705 }-
706-
707 terminal_prepped = 0;-
708 RL_UNSETSTATE(RL_STATE_TERMPREPPED);-
709-
710 _rl_release_sigint ();-
711}
never executed: end of block
0
712#endif /* !NO_TTY_DRIVER */-
713-
714/* Set readline's idea of whether or not it is echoing output to the terminal,-
715 returning the old value. */-
716int-
717rl_tty_set_echoing (int u)-
718{-
719 int o;-
720-
721 o = _rl_echoing_p;-
722 _rl_echoing_p = u;-
723 return o;
never executed: return o;
0
724}-
725 -
726/* **************************************************************** */-
727/* */-
728/* Bogus Flow Control */-
729/* */-
730/* **************************************************************** */-
731-
732int-
733rl_restart_output (int count, int key)-
734{-
735#if defined (__MINGW32__)-
736 return 0;-
737#else /* !__MING32__ */-
738-
739 int fildes = fileno (rl_outstream);-
740#if defined (TIOCSTART)-
741#if defined (apollo)-
742 ioctl (&fildes, TIOCSTART, 0);-
743#else-
744 ioctl (fildes, TIOCSTART, 0);-
745#endif /* apollo */-
746-
747#else /* !TIOCSTART */-
748# if defined (TERMIOS_TTY_DRIVER)-
749# if defined (__ksr1__)-
750 if (ksrflow)-
751 {-
752 ksrflow = 0;-
753 tcflow (fildes, TCOON);-
754 }-
755# else /* !ksr1 */-
756 tcflow (fildes, TCOON); /* Simulate a ^Q. */-
757# endif /* !ksr1 */-
758# else /* !TERMIOS_TTY_DRIVER */-
759# if defined (TCXONC)-
760 ioctl (fildes, TCXONC, TCOON);-
761# endif /* TCXONC */-
762# endif /* !TERMIOS_TTY_DRIVER */-
763#endif /* !TIOCSTART */-
764-
765 return 0;
never executed: return 0;
0
766#endif /* !__MINGW32__ */-
767}-
768-
769int-
770rl_stop_output (int count, int key)-
771{-
772#if defined (__MINGW32__)-
773 return 0;-
774#else-
775-
776 int fildes = fileno (rl_instream);-
777-
778#if defined (TIOCSTOP)-
779# if defined (apollo)-
780 ioctl (&fildes, TIOCSTOP, 0);-
781# else-
782 ioctl (fildes, TIOCSTOP, 0);-
783# endif /* apollo */-
784#else /* !TIOCSTOP */-
785# if defined (TERMIOS_TTY_DRIVER)-
786# if defined (__ksr1__)-
787 ksrflow = 1;-
788# endif /* ksr1 */-
789 tcflow (fildes, TCOOFF);-
790# else-
791# if defined (TCXONC)-
792 ioctl (fildes, TCXONC, TCOON);-
793# endif /* TCXONC */-
794# endif /* !TERMIOS_TTY_DRIVER */-
795#endif /* !TIOCSTOP */-
796-
797 return 0;
never executed: return 0;
0
798#endif /* !__MINGW32__ */-
799}-
800-
801/* **************************************************************** */-
802/* */-
803/* Default Key Bindings */-
804/* */-
805/* **************************************************************** */-
806-
807#if !defined (NO_TTY_DRIVER)-
808#define SET_SPECIAL(sc, func) set_special_char(kmap, &ttybuff, sc, func)-
809#endif-
810-
811#if defined (NO_TTY_DRIVER)-
812-
813#define SET_SPECIAL(sc, func)-
814#define RESET_SPECIAL(c)-
815-
816#elif defined (NEW_TTY_DRIVER)-
817static void-
818set_special_char (Keymap kmap, TIOTYPE *tiop, int sc, rl_command_func_t *func)-
819{-
820 if (sc != -1 && kmap[(unsigned char)sc].type == ISFUNC)-
821 kmap[(unsigned char)sc].function = func;-
822}-
823-
824#define RESET_SPECIAL(c) \-
825 if (c != -1 && kmap[(unsigned char)c].type == ISFUNC) \-
826 kmap[(unsigned char)c].function = rl_insert;-
827-
828static void-
829_rl_bind_tty_special_chars (Keymap kmap, TIOTYPE ttybuff)-
830{-
831 if (ttybuff.flags & SGTTY_SET)-
832 {-
833 SET_SPECIAL (ttybuff.sgttyb.sg_erase, rl_rubout);-
834 SET_SPECIAL (ttybuff.sgttyb.sg_kill, rl_unix_line_discard);-
835 }-
836-
837# if defined (TIOCGLTC)-
838 if (ttybuff.flags & LTCHARS_SET)-
839 {-
840 SET_SPECIAL (ttybuff.ltchars.t_werasc, rl_unix_word_rubout);-
841 SET_SPECIAL (ttybuff.ltchars.t_lnextc, rl_quoted_insert);-
842 }-
843# endif /* TIOCGLTC */-
844}-
845-
846#else /* !NEW_TTY_DRIVER */-
847static void-
848set_special_char (Keymap kmap, TIOTYPE *tiop, int sc, rl_command_func_t *func)-
849{-
850 unsigned char uc;-
851-
852 uc = tiop->c_cc[sc];-
853 if (uc != (unsigned char)_POSIX_VDISABLE && kmap[uc].type == ISFUNC)
uc != (unsigned char) '\0'Description
TRUEnever evaluated
FALSEnever evaluated
kmap[uc].type == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
854 kmap[uc].function = func;
never executed: kmap[uc].function = func;
0
855}
never executed: end of block
0
856-
857/* used later */-
858#define RESET_SPECIAL(uc) \-
859 if (uc != (unsigned char)_POSIX_VDISABLE && kmap[uc].type == ISFUNC) \-
860 kmap[uc].function = rl_insert;-
861-
862static void-
863_rl_bind_tty_special_chars (Keymap kmap, TIOTYPE ttybuff)-
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# if defined (VI_MODE)-
874 if (rl_editing_mode == vi_mode)
rl_editing_mode == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
875 SET_SPECIAL (VWERASE, rl_vi_unix_word_rubout);
never executed: set_special_char(kmap, &ttybuff, 14 , rl_vi_unix_word_rubout);
0
876 else-
877# endif-
878 SET_SPECIAL (VWERASE, rl_unix_word_rubout);
never executed: set_special_char(kmap, &ttybuff, 14 , rl_unix_word_rubout);
0
879# endif /* VWERASE && TERMIOS_TTY_DRIVER */-
880}-
881-
882#endif /* !NEW_TTY_DRIVER */-
883-
884/* Set the system's default editing characters to their readline equivalents-
885 in KMAP. Should be static, now that we have rl_tty_set_default_bindings. */-
886void-
887rltty_set_default_bindings (Keymap kmap)-
888{-
889#if !defined (NO_TTY_DRIVER)-
890 TIOTYPE ttybuff;-
891 int tty;-
892-
893 tty = fileno (rl_instream);-
894-
895 if (get_tty_settings (tty, &ttybuff) == 0)
get_tty_settin...&ttybuff) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
896 _rl_bind_tty_special_chars (kmap, ttybuff);
never executed: _rl_bind_tty_special_chars (kmap, ttybuff);
0
897#endif-
898}
never executed: end of block
0
899-
900/* New public way to set the system default editing chars to their readline-
901 equivalents. */-
902void-
903rl_tty_set_default_bindings (Keymap kmap)-
904{-
905 rltty_set_default_bindings (kmap);-
906}
never executed: end of block
0
907-
908/* Rebind all of the tty special chars that readline worries about back-
909 to self-insert. Call this before saving the current terminal special-
910 chars with save_tty_chars(). This only works on POSIX termios or termio-
911 systems. */-
912void-
913rl_tty_unset_default_bindings (Keymap kmap)-
914{-
915 /* Don't bother before we've saved the tty special chars at least once. */-
916 if (RL_ISSTATE(RL_STATE_TTYCSAVED) == 0)
(rl_readline_s...0040000)) == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
917 return;
never executed: return;
0
918-
919 RESET_SPECIAL (_rl_tty_chars.t_erase);
never executed: kmap[_rl_tty_chars.t_erase].function = rl_insert;
_rl_tty_chars....ned char) '\0'Description
TRUEnever evaluated
FALSEnever evaluated
kmap[_rl_tty_c...ase].type == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
920 RESET_SPECIAL (_rl_tty_chars.t_kill);
never executed: kmap[_rl_tty_chars.t_kill].function = rl_insert;
_rl_tty_chars....ned char) '\0'Description
TRUEnever evaluated
FALSEnever evaluated
kmap[_rl_tty_c...ill].type == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
921-
922# if defined (VLNEXT) && defined (TERMIOS_TTY_DRIVER)-
923 RESET_SPECIAL (_rl_tty_chars.t_lnext);
never executed: kmap[_rl_tty_chars.t_lnext].function = rl_insert;
_rl_tty_chars....ned char) '\0'Description
TRUEnever evaluated
FALSEnever evaluated
kmap[_rl_tty_c...ext].type == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
924# endif /* VLNEXT && TERMIOS_TTY_DRIVER */-
925-
926# if defined (VWERASE) && defined (TERMIOS_TTY_DRIVER)-
927 RESET_SPECIAL (_rl_tty_chars.t_werase);
never executed: kmap[_rl_tty_chars.t_werase].function = rl_insert;
_rl_tty_chars....ned char) '\0'Description
TRUEnever evaluated
FALSEnever evaluated
kmap[_rl_tty_c...ase].type == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
928# endif /* VWERASE && TERMIOS_TTY_DRIVER */-
929}
never executed: end of block
0
930-
931#if defined (HANDLE_SIGNALS)-
932-
933#if defined (NEW_TTY_DRIVER) || defined (NO_TTY_DRIVER)-
934int-
935_rl_disable_tty_signals (void)-
936{-
937 return 0;-
938}-
939-
940int-
941_rl_restore_tty_signals (void)-
942{-
943 return 0;-
944}-
945#else-
946-
947static TIOTYPE sigstty, nosigstty;-
948static int tty_sigs_disabled = 0;-
949-
950int-
951_rl_disable_tty_signals (void)-
952{-
953 if (tty_sigs_disabled)
tty_sigs_disabledDescription
TRUEnever evaluated
FALSEnever evaluated
0
954 return 0;
never executed: return 0;
0
955-
956 if (_get_tty_settings (fileno (rl_instream), &sigstty) < 0)
_get_tty_setti... &sigstty) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
957 return -1;
never executed: return -1;
0
958-
959 nosigstty = sigstty;-
960-
961 nosigstty.c_lflag &= ~ISIG;-
962 nosigstty.c_iflag &= ~IXON;-
963-
964 if (_set_tty_settings (fileno (rl_instream), &nosigstty) < 0)
_set_tty_setti...nosigstty) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
965 return (_set_tty_settings (fileno (rl_instream), &sigstty));
never executed: return (_set_tty_settings (fileno (rl_instream), &sigstty));
0
966-
967 tty_sigs_disabled = 1;-
968 return 0;
never executed: return 0;
0
969}-
970-
971int-
972_rl_restore_tty_signals (void)-
973{-
974 int r;-
975-
976 if (tty_sigs_disabled == 0)
tty_sigs_disabled == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
977 return 0;
never executed: return 0;
0
978-
979 r = _set_tty_settings (fileno (rl_instream), &sigstty);-
980-
981 if (r == 0)
r == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
982 tty_sigs_disabled = 0;
never executed: tty_sigs_disabled = 0;
0
983-
984 return r;
never executed: return r;
0
985}-
986#endif /* !NEW_TTY_DRIVER */-
987-
988#endif /* HANDLE_SIGNALS */-
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