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Commit | Line | Data |
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d60d9f65 SS |
1 | /* input.c -- character input functions for readline. */ |
2 | ||
775e241e | 3 | /* Copyright (C) 1994-2015 Free Software Foundation, Inc. |
d60d9f65 | 4 | |
cc88a640 JK |
5 | This file is part of the GNU Readline Library (Readline), a library |
6 | for reading lines of text with interactive input and history editing. | |
d60d9f65 | 7 | |
cc88a640 JK |
8 | Readline is free software: you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation, either version 3 of the License, or | |
d60d9f65 SS |
11 | (at your option) any later version. |
12 | ||
cc88a640 JK |
13 | Readline is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
d60d9f65 SS |
16 | GNU General Public License for more details. |
17 | ||
cc88a640 JK |
18 | You should have received a copy of the GNU General Public License |
19 | along with Readline. If not, see <http://www.gnu.org/licenses/>. | |
20 | */ | |
21 | ||
d60d9f65 SS |
22 | #define READLINE_LIBRARY |
23 | ||
5bdf8622 DJ |
24 | #if defined (__TANDEM) |
25 | # include <floss.h> | |
26 | #endif | |
27 | ||
d60d9f65 SS |
28 | #if defined (HAVE_CONFIG_H) |
29 | # include <config.h> | |
30 | #endif | |
31 | ||
32 | #include <sys/types.h> | |
33 | #include <fcntl.h> | |
34 | #if defined (HAVE_SYS_FILE_H) | |
35 | # include <sys/file.h> | |
36 | #endif /* HAVE_SYS_FILE_H */ | |
37 | ||
38 | #if defined (HAVE_UNISTD_H) | |
39 | # include <unistd.h> | |
40 | #endif /* HAVE_UNISTD_H */ | |
41 | ||
42 | #if defined (HAVE_STDLIB_H) | |
43 | # include <stdlib.h> | |
44 | #else | |
45 | # include "ansi_stdlib.h" | |
46 | #endif /* HAVE_STDLIB_H */ | |
47 | ||
775e241e TT |
48 | #include <signal.h> |
49 | ||
cc88a640 | 50 | #include "posixselect.h" |
d60d9f65 SS |
51 | |
52 | #if defined (FIONREAD_IN_SYS_IOCTL) | |
53 | # include <sys/ioctl.h> | |
54 | #endif | |
55 | ||
56 | #include <stdio.h> | |
57 | #include <errno.h> | |
58 | ||
59 | #if !defined (errno) | |
60 | extern int errno; | |
61 | #endif /* !errno */ | |
62 | ||
63 | /* System-specific feature definitions and include files. */ | |
64 | #include "rldefs.h" | |
9255ee31 | 65 | #include "rlmbutil.h" |
d60d9f65 SS |
66 | |
67 | /* Some standard library routines. */ | |
68 | #include "readline.h" | |
69 | ||
1b17e766 EZ |
70 | #include "rlprivate.h" |
71 | #include "rlshell.h" | |
72 | #include "xmalloc.h" | |
73 | ||
d60d9f65 SS |
74 | /* What kind of non-blocking I/O do we have? */ |
75 | #if !defined (O_NDELAY) && defined (O_NONBLOCK) | |
76 | # define O_NDELAY O_NONBLOCK /* Posix style */ | |
77 | #endif | |
78 | ||
d60d9f65 SS |
79 | /* Non-null means it is a pointer to a function to run while waiting for |
80 | character input. */ | |
9255ee31 | 81 | rl_hook_func_t *rl_event_hook = (rl_hook_func_t *)NULL; |
d60d9f65 | 82 | |
775e241e TT |
83 | /* A function to call if a read(2) is interrupted by a signal. */ |
84 | rl_hook_func_t *rl_signal_event_hook = (rl_hook_func_t *)NULL; | |
85 | ||
86 | /* A function to replace _rl_input_available for applications using the | |
87 | callback interface. */ | |
88 | rl_hook_func_t *rl_input_available_hook = (rl_hook_func_t *)NULL; | |
89 | ||
9255ee31 EZ |
90 | rl_getc_func_t *rl_getc_function = rl_getc; |
91 | ||
92 | static int _keyboard_input_timeout = 100000; /* 0.1 seconds; it's in usec */ | |
93 | ||
94 | static int ibuffer_space PARAMS((void)); | |
95 | static int rl_get_char PARAMS((int *)); | |
96 | static int rl_gather_tyi PARAMS((void)); | |
d60d9f65 | 97 | |
7f3c5ec8 EZ |
98 | #if defined (_WIN32) && !defined (__CYGWIN__) |
99 | ||
100 | /* 'isatty' in the Windows runtime returns non-zero for every | |
101 | character device, including the null device. Repair that. */ | |
102 | #include <io.h> | |
50e1d299 | 103 | #include <conio.h> |
7f3c5ec8 EZ |
104 | #define WIN32_LEAN_AND_MEAN 1 |
105 | #include <windows.h> | |
106 | ||
107 | int w32_isatty (int fd) | |
108 | { | |
109 | if (_isatty(fd)) | |
110 | { | |
111 | HANDLE h = (HANDLE) _get_osfhandle (fd); | |
112 | DWORD ignored; | |
113 | ||
114 | if (h == INVALID_HANDLE_VALUE) | |
115 | { | |
116 | errno = EBADF; | |
117 | return 0; | |
118 | } | |
119 | if (GetConsoleMode (h, &ignored) != 0) | |
120 | return 1; | |
121 | } | |
122 | errno = ENOTTY; | |
123 | return 0; | |
124 | } | |
125 | ||
126 | #define isatty(x) w32_isatty(x) | |
127 | #endif | |
128 | ||
d60d9f65 SS |
129 | /* **************************************************************** */ |
130 | /* */ | |
131 | /* Character Input Buffering */ | |
132 | /* */ | |
133 | /* **************************************************************** */ | |
134 | ||
135 | static int pop_index, push_index; | |
136 | static unsigned char ibuffer[512]; | |
137 | static int ibuffer_len = sizeof (ibuffer) - 1; | |
138 | ||
139 | #define any_typein (push_index != pop_index) | |
140 | ||
141 | int | |
142 | _rl_any_typein () | |
143 | { | |
144 | return any_typein; | |
145 | } | |
146 | ||
775e241e TT |
147 | int |
148 | _rl_pushed_input_available () | |
149 | { | |
150 | return (push_index != pop_index); | |
151 | } | |
152 | ||
c862e87b JM |
153 | /* Return the amount of space available in the buffer for stuffing |
154 | characters. */ | |
d60d9f65 SS |
155 | static int |
156 | ibuffer_space () | |
157 | { | |
158 | if (pop_index > push_index) | |
c862e87b | 159 | return (pop_index - push_index - 1); |
d60d9f65 SS |
160 | else |
161 | return (ibuffer_len - (push_index - pop_index)); | |
162 | } | |
163 | ||
164 | /* Get a key from the buffer of characters to be read. | |
165 | Return the key in KEY. | |
775e241e | 166 | Result is non-zero if there was a key, or 0 if there wasn't. */ |
d60d9f65 SS |
167 | static int |
168 | rl_get_char (key) | |
169 | int *key; | |
170 | { | |
171 | if (push_index == pop_index) | |
172 | return (0); | |
173 | ||
174 | *key = ibuffer[pop_index++]; | |
cc88a640 | 175 | #if 0 |
d60d9f65 | 176 | if (pop_index >= ibuffer_len) |
cc88a640 JK |
177 | #else |
178 | if (pop_index > ibuffer_len) | |
179 | #endif | |
d60d9f65 SS |
180 | pop_index = 0; |
181 | ||
182 | return (1); | |
183 | } | |
184 | ||
185 | /* Stuff KEY into the *front* of the input buffer. | |
186 | Returns non-zero if successful, zero if there is | |
187 | no space left in the buffer. */ | |
9255ee31 EZ |
188 | int |
189 | _rl_unget_char (key) | |
d60d9f65 SS |
190 | int key; |
191 | { | |
192 | if (ibuffer_space ()) | |
193 | { | |
194 | pop_index--; | |
195 | if (pop_index < 0) | |
cc88a640 | 196 | pop_index = ibuffer_len; |
d60d9f65 SS |
197 | ibuffer[pop_index] = key; |
198 | return (1); | |
199 | } | |
200 | return (0); | |
201 | } | |
202 | ||
9255ee31 EZ |
203 | /* If a character is available to be read, then read it and stuff it into |
204 | IBUFFER. Otherwise, just return. Returns number of characters read | |
205 | (0 if none available) and -1 on error (EIO). */ | |
206 | static int | |
d60d9f65 SS |
207 | rl_gather_tyi () |
208 | { | |
d60d9f65 SS |
209 | int tty; |
210 | register int tem, result; | |
5bdf8622 | 211 | int chars_avail, k; |
d60d9f65 SS |
212 | char input; |
213 | #if defined(HAVE_SELECT) | |
214 | fd_set readfds, exceptfds; | |
215 | struct timeval timeout; | |
216 | #endif | |
217 | ||
cc88a640 | 218 | chars_avail = 0; |
775e241e | 219 | input = 0; |
d60d9f65 SS |
220 | tty = fileno (rl_instream); |
221 | ||
222 | #if defined (HAVE_SELECT) | |
223 | FD_ZERO (&readfds); | |
224 | FD_ZERO (&exceptfds); | |
225 | FD_SET (tty, &readfds); | |
226 | FD_SET (tty, &exceptfds); | |
cc88a640 | 227 | USEC_TO_TIMEVAL (_keyboard_input_timeout, timeout); |
9255ee31 EZ |
228 | result = select (tty + 1, &readfds, (fd_set *)NULL, &exceptfds, &timeout); |
229 | if (result <= 0) | |
230 | return 0; /* Nothing to read. */ | |
d60d9f65 SS |
231 | #endif |
232 | ||
233 | result = -1; | |
9255ee31 | 234 | errno = 0; |
775e241e | 235 | #if defined (FIONREAD) |
d60d9f65 | 236 | result = ioctl (tty, FIONREAD, &chars_avail); |
9255ee31 EZ |
237 | if (result == -1 && errno == EIO) |
238 | return -1; | |
775e241e TT |
239 | if (result == -1) |
240 | chars_avail = 0; | |
d60d9f65 SS |
241 | #endif |
242 | ||
243 | #if defined (O_NDELAY) | |
244 | if (result == -1) | |
245 | { | |
246 | tem = fcntl (tty, F_GETFL, 0); | |
247 | ||
248 | fcntl (tty, F_SETFL, (tem | O_NDELAY)); | |
249 | chars_avail = read (tty, &input, 1); | |
250 | ||
251 | fcntl (tty, F_SETFL, tem); | |
252 | if (chars_avail == -1 && errno == EAGAIN) | |
9255ee31 | 253 | return 0; |
775e241e TT |
254 | if (chars_avail == -1 && errno == EIO) |
255 | return -1; | |
5bdf8622 DJ |
256 | if (chars_avail == 0) /* EOF */ |
257 | { | |
258 | rl_stuff_char (EOF); | |
259 | return (0); | |
260 | } | |
d60d9f65 SS |
261 | } |
262 | #endif /* O_NDELAY */ | |
263 | ||
5bdf8622 | 264 | #if defined (__MINGW32__) |
cc88a640 JK |
265 | /* Use getch/_kbhit to check for available console input, in the same way |
266 | that we read it normally. */ | |
267 | chars_avail = isatty (tty) ? _kbhit () : 0; | |
268 | result = 0; | |
5bdf8622 DJ |
269 | #endif |
270 | ||
d60d9f65 SS |
271 | /* If there's nothing available, don't waste time trying to read |
272 | something. */ | |
273 | if (chars_avail <= 0) | |
9255ee31 | 274 | return 0; |
d60d9f65 SS |
275 | |
276 | tem = ibuffer_space (); | |
277 | ||
278 | if (chars_avail > tem) | |
279 | chars_avail = tem; | |
280 | ||
281 | /* One cannot read all of the available input. I can only read a single | |
282 | character at a time, or else programs which require input can be | |
283 | thwarted. If the buffer is larger than one character, I lose. | |
284 | Damn! */ | |
285 | if (tem < ibuffer_len) | |
286 | chars_avail = 0; | |
287 | ||
288 | if (result != -1) | |
289 | { | |
290 | while (chars_avail--) | |
5bdf8622 | 291 | { |
cc88a640 | 292 | RL_CHECK_SIGNALS (); |
5bdf8622 | 293 | k = (*rl_getc_function) (rl_instream); |
cc88a640 JK |
294 | if (rl_stuff_char (k) == 0) |
295 | break; /* some problem; no more room */ | |
5bdf8622 DJ |
296 | if (k == NEWLINE || k == RETURN) |
297 | break; | |
298 | } | |
d60d9f65 SS |
299 | } |
300 | else | |
301 | { | |
302 | if (chars_avail) | |
303 | rl_stuff_char (input); | |
304 | } | |
9255ee31 EZ |
305 | |
306 | return 1; | |
307 | } | |
308 | ||
309 | int | |
310 | rl_set_keyboard_input_timeout (u) | |
311 | int u; | |
312 | { | |
313 | int o; | |
314 | ||
315 | o = _keyboard_input_timeout; | |
cc88a640 | 316 | if (u >= 0) |
9255ee31 EZ |
317 | _keyboard_input_timeout = u; |
318 | return (o); | |
d60d9f65 SS |
319 | } |
320 | ||
321 | /* Is there input available to be read on the readline input file | |
9255ee31 EZ |
322 | descriptor? Only works if the system has select(2) or FIONREAD. |
323 | Uses the value of _keyboard_input_timeout as the timeout; if another | |
324 | readline function wants to specify a timeout and not leave it up to | |
325 | the user, it should use _rl_input_queued(timeout_value_in_microseconds) | |
326 | instead. */ | |
d60d9f65 SS |
327 | int |
328 | _rl_input_available () | |
329 | { | |
330 | #if defined(HAVE_SELECT) | |
331 | fd_set readfds, exceptfds; | |
332 | struct timeval timeout; | |
333 | #endif | |
9255ee31 | 334 | #if !defined (HAVE_SELECT) && defined(FIONREAD) |
d60d9f65 SS |
335 | int chars_avail; |
336 | #endif | |
337 | int tty; | |
338 | ||
775e241e TT |
339 | if (rl_input_available_hook) |
340 | return (*rl_input_available_hook) (); | |
341 | ||
d60d9f65 SS |
342 | tty = fileno (rl_instream); |
343 | ||
344 | #if defined (HAVE_SELECT) | |
345 | FD_ZERO (&readfds); | |
346 | FD_ZERO (&exceptfds); | |
347 | FD_SET (tty, &readfds); | |
348 | FD_SET (tty, &exceptfds); | |
349 | timeout.tv_sec = 0; | |
9255ee31 | 350 | timeout.tv_usec = _keyboard_input_timeout; |
d60d9f65 | 351 | return (select (tty + 1, &readfds, (fd_set *)NULL, &exceptfds, &timeout) > 0); |
9255ee31 | 352 | #else |
d60d9f65 SS |
353 | |
354 | #if defined (FIONREAD) | |
355 | if (ioctl (tty, FIONREAD, &chars_avail) == 0) | |
356 | return (chars_avail); | |
9255ee31 EZ |
357 | #endif |
358 | ||
5bdf8622 DJ |
359 | #endif |
360 | ||
361 | #if defined (__MINGW32__) | |
cc88a640 JK |
362 | if (isatty (tty)) |
363 | return (_kbhit ()); | |
d60d9f65 SS |
364 | #endif |
365 | ||
366 | return 0; | |
367 | } | |
368 | ||
9255ee31 EZ |
369 | int |
370 | _rl_input_queued (t) | |
371 | int t; | |
372 | { | |
373 | int old_timeout, r; | |
374 | ||
375 | old_timeout = rl_set_keyboard_input_timeout (t); | |
376 | r = _rl_input_available (); | |
377 | rl_set_keyboard_input_timeout (old_timeout); | |
378 | return r; | |
379 | } | |
380 | ||
d60d9f65 SS |
381 | void |
382 | _rl_insert_typein (c) | |
383 | int c; | |
384 | { | |
385 | int key, t, i; | |
386 | char *string; | |
387 | ||
388 | i = key = 0; | |
9255ee31 | 389 | string = (char *)xmalloc (ibuffer_len + 1); |
d60d9f65 SS |
390 | string[i++] = (char) c; |
391 | ||
392 | while ((t = rl_get_char (&key)) && | |
393 | _rl_keymap[key].type == ISFUNC && | |
394 | _rl_keymap[key].function == rl_insert) | |
395 | string[i++] = key; | |
396 | ||
397 | if (t) | |
9255ee31 | 398 | _rl_unget_char (key); |
d60d9f65 SS |
399 | |
400 | string[i] = '\0'; | |
401 | rl_insert_text (string); | |
cc88a640 | 402 | xfree (string); |
d60d9f65 SS |
403 | } |
404 | ||
c862e87b JM |
405 | /* Add KEY to the buffer of characters to be read. Returns 1 if the |
406 | character was stuffed correctly; 0 otherwise. */ | |
407 | int | |
408 | rl_stuff_char (key) | |
409 | int key; | |
410 | { | |
411 | if (ibuffer_space () == 0) | |
412 | return 0; | |
413 | ||
414 | if (key == EOF) | |
415 | { | |
416 | key = NEWLINE; | |
417 | rl_pending_input = EOF; | |
9255ee31 | 418 | RL_SETSTATE (RL_STATE_INPUTPENDING); |
c862e87b JM |
419 | } |
420 | ibuffer[push_index++] = key; | |
cc88a640 | 421 | #if 0 |
c862e87b | 422 | if (push_index >= ibuffer_len) |
cc88a640 JK |
423 | #else |
424 | if (push_index > ibuffer_len) | |
425 | #endif | |
c862e87b JM |
426 | push_index = 0; |
427 | ||
428 | return 1; | |
429 | } | |
430 | ||
431 | /* Make C be the next command to be executed. */ | |
432 | int | |
433 | rl_execute_next (c) | |
434 | int c; | |
435 | { | |
436 | rl_pending_input = c; | |
9255ee31 EZ |
437 | RL_SETSTATE (RL_STATE_INPUTPENDING); |
438 | return 0; | |
439 | } | |
440 | ||
441 | /* Clear any pending input pushed with rl_execute_next() */ | |
442 | int | |
443 | rl_clear_pending_input () | |
444 | { | |
445 | rl_pending_input = 0; | |
446 | RL_UNSETSTATE (RL_STATE_INPUTPENDING); | |
c862e87b JM |
447 | return 0; |
448 | } | |
449 | ||
d60d9f65 SS |
450 | /* **************************************************************** */ |
451 | /* */ | |
452 | /* Character Input */ | |
453 | /* */ | |
454 | /* **************************************************************** */ | |
455 | ||
456 | /* Read a key, including pending input. */ | |
457 | int | |
458 | rl_read_key () | |
459 | { | |
775e241e | 460 | int c, r; |
d60d9f65 SS |
461 | |
462 | if (rl_pending_input) | |
463 | { | |
464 | c = rl_pending_input; | |
9255ee31 | 465 | rl_clear_pending_input (); |
d60d9f65 SS |
466 | } |
467 | else | |
468 | { | |
469 | /* If input is coming from a macro, then use that. */ | |
470 | if (c = _rl_next_macro_key ()) | |
471 | return (c); | |
472 | ||
473 | /* If the user has an event function, then call it periodically. */ | |
474 | if (rl_event_hook) | |
475 | { | |
cc88a640 | 476 | while (rl_event_hook) |
d60d9f65 | 477 | { |
775e241e TT |
478 | if (rl_get_char (&c) != 0) |
479 | break; | |
480 | ||
481 | if ((r = rl_gather_tyi ()) < 0) /* XXX - EIO */ | |
9255ee31 EZ |
482 | { |
483 | rl_done = 1; | |
775e241e | 484 | return (errno == EIO ? (RL_ISSTATE (RL_STATE_READCMD) ? READERR : EOF) : '\n'); |
9255ee31 | 485 | } |
775e241e TT |
486 | else if (r > 0) /* read something */ |
487 | continue; | |
488 | ||
cc88a640 | 489 | RL_CHECK_SIGNALS (); |
cc88a640 JK |
490 | if (rl_done) /* XXX - experimental */ |
491 | return ('\n'); | |
492 | (*rl_event_hook) (); | |
d60d9f65 SS |
493 | } |
494 | } | |
495 | else | |
496 | { | |
497 | if (rl_get_char (&c) == 0) | |
498 | c = (*rl_getc_function) (rl_instream); | |
775e241e | 499 | /* fprintf(stderr, "rl_read_key: calling RL_CHECK_SIGNALS: _rl_caught_signal = %d", _rl_caught_signal); */ |
cc88a640 | 500 | RL_CHECK_SIGNALS (); |
d60d9f65 SS |
501 | } |
502 | } | |
503 | ||
504 | return (c); | |
505 | } | |
506 | ||
507 | int | |
508 | rl_getc (stream) | |
509 | FILE *stream; | |
510 | { | |
1b17e766 | 511 | int result; |
d60d9f65 | 512 | unsigned char c; |
775e241e TT |
513 | #if defined (HAVE_PSELECT) |
514 | sigset_t empty_set; | |
515 | fd_set readfds; | |
516 | #endif | |
d60d9f65 | 517 | |
d60d9f65 SS |
518 | while (1) |
519 | { | |
cc88a640 JK |
520 | RL_CHECK_SIGNALS (); |
521 | ||
775e241e TT |
522 | /* We know at this point that _rl_caught_signal == 0 */ |
523 | ||
5bdf8622 | 524 | #if defined (__MINGW32__) |
fd8be987 | 525 | if (isatty (fileno (stream))) |
775e241e TT |
526 | return (_getch ()); /* "There is no error return." */ |
527 | #endif | |
528 | result = 0; | |
529 | #if defined (HAVE_PSELECT) | |
530 | sigemptyset (&empty_set); | |
531 | sigprocmask (SIG_BLOCK, (sigset_t *)NULL, &empty_set); | |
532 | FD_ZERO (&readfds); | |
533 | FD_SET (fileno (stream), &readfds); | |
534 | result = pselect (fileno (stream) + 1, &readfds, NULL, NULL, NULL, &empty_set); | |
fd8be987 | 535 | #endif |
775e241e TT |
536 | if (result >= 0) |
537 | result = read (fileno (stream), &c, sizeof (unsigned char)); | |
d60d9f65 SS |
538 | |
539 | if (result == sizeof (unsigned char)) | |
540 | return (c); | |
541 | ||
542 | /* If zero characters are returned, then the file that we are | |
543 | reading from is empty! Return EOF in that case. */ | |
544 | if (result == 0) | |
545 | return (EOF); | |
546 | ||
c862e87b JM |
547 | #if defined (__BEOS__) |
548 | if (errno == EINTR) | |
549 | continue; | |
550 | #endif | |
551 | ||
d60d9f65 | 552 | #if defined (EWOULDBLOCK) |
1b17e766 EZ |
553 | # define X_EWOULDBLOCK EWOULDBLOCK |
554 | #else | |
555 | # define X_EWOULDBLOCK -99 | |
556 | #endif | |
557 | ||
558 | #if defined (EAGAIN) | |
559 | # define X_EAGAIN EAGAIN | |
560 | #else | |
561 | # define X_EAGAIN -99 | |
562 | #endif | |
563 | ||
564 | if (errno == X_EWOULDBLOCK || errno == X_EAGAIN) | |
d60d9f65 | 565 | { |
9255ee31 | 566 | if (sh_unset_nodelay_mode (fileno (stream)) < 0) |
d60d9f65 | 567 | return (EOF); |
d60d9f65 SS |
568 | continue; |
569 | } | |
d60d9f65 | 570 | |
1b17e766 EZ |
571 | #undef X_EWOULDBLOCK |
572 | #undef X_EAGAIN | |
d60d9f65 | 573 | |
775e241e TT |
574 | /* fprintf(stderr, "rl_getc: result = %d errno = %d\n", result, errno); */ |
575 | ||
576 | handle_error: | |
577 | /* If the error that we received was EINTR, then try again, | |
578 | this is simply an interrupted system call to read (). We allow | |
579 | the read to be interrupted if we caught SIGHUP, SIGTERM, or any | |
580 | of the other signals readline treats specially. If the | |
581 | application sets an event hook, call it for other signals. | |
582 | Otherwise (not EINTR), some error occurred, also signifying EOF. */ | |
d60d9f65 | 583 | if (errno != EINTR) |
cc88a640 | 584 | return (RL_ISSTATE (RL_STATE_READCMD) ? READERR : EOF); |
775e241e TT |
585 | /* fatal signals of interest */ |
586 | #if defined (SIGHUP) | |
587 | else if (_rl_caught_signal == SIGHUP || _rl_caught_signal == SIGTERM) | |
588 | #else | |
589 | else if (_rl_caught_signal == SIGTERM) | |
590 | #endif | |
591 | return (RL_ISSTATE (RL_STATE_READCMD) ? READERR : EOF); | |
592 | /* keyboard-generated signals of interest */ | |
593 | #if defined (SIGQUIT) | |
594 | else if (_rl_caught_signal == SIGINT || _rl_caught_signal == SIGQUIT) | |
595 | #else | |
596 | else if (_rl_caught_signal == SIGINT) | |
597 | #endif | |
598 | RL_CHECK_SIGNALS (); | |
599 | /* non-keyboard-generated signals of interest */ | |
600 | #if defined (SIGWINCH) | |
601 | else if (_rl_caught_signal == SIGWINCH) | |
602 | RL_CHECK_SIGNALS (); | |
603 | #endif /* SIGWINCH */ | |
604 | #if defined (SIGALRM) | |
605 | else if (_rl_caught_signal == SIGALRM | |
606 | # if defined (SIGVTALRM) | |
607 | || _rl_caught_signal == SIGVTALRM | |
608 | # endif | |
609 | ) | |
610 | RL_CHECK_SIGNALS (); | |
611 | #endif /* SIGALRM */ | |
612 | ||
613 | if (rl_signal_event_hook) | |
614 | (*rl_signal_event_hook) (); | |
d60d9f65 SS |
615 | } |
616 | } | |
9255ee31 EZ |
617 | |
618 | #if defined (HANDLE_MULTIBYTE) | |
619 | /* read multibyte char */ | |
620 | int | |
621 | _rl_read_mbchar (mbchar, size) | |
622 | char *mbchar; | |
623 | int size; | |
624 | { | |
cc88a640 | 625 | int mb_len, c; |
9255ee31 EZ |
626 | size_t mbchar_bytes_length; |
627 | wchar_t wc; | |
628 | mbstate_t ps, ps_back; | |
629 | ||
630 | memset(&ps, 0, sizeof (mbstate_t)); | |
631 | memset(&ps_back, 0, sizeof (mbstate_t)); | |
cc88a640 JK |
632 | |
633 | mb_len = 0; | |
9255ee31 EZ |
634 | while (mb_len < size) |
635 | { | |
636 | RL_SETSTATE(RL_STATE_MOREINPUT); | |
cc88a640 | 637 | c = rl_read_key (); |
9255ee31 EZ |
638 | RL_UNSETSTATE(RL_STATE_MOREINPUT); |
639 | ||
cc88a640 JK |
640 | if (c < 0) |
641 | break; | |
642 | ||
643 | mbchar[mb_len++] = c; | |
644 | ||
9255ee31 EZ |
645 | mbchar_bytes_length = mbrtowc (&wc, mbchar, mb_len, &ps); |
646 | if (mbchar_bytes_length == (size_t)(-1)) | |
647 | break; /* invalid byte sequence for the current locale */ | |
648 | else if (mbchar_bytes_length == (size_t)(-2)) | |
649 | { | |
650 | /* shorted bytes */ | |
651 | ps = ps_back; | |
652 | continue; | |
653 | } | |
5bdf8622 DJ |
654 | else if (mbchar_bytes_length == 0) |
655 | { | |
656 | mbchar[0] = '\0'; /* null wide character */ | |
657 | mb_len = 1; | |
658 | break; | |
659 | } | |
9255ee31 EZ |
660 | else if (mbchar_bytes_length > (size_t)(0)) |
661 | break; | |
662 | } | |
663 | ||
664 | return mb_len; | |
665 | } | |
666 | ||
667 | /* Read a multibyte-character string whose first character is FIRST into | |
cc88a640 | 668 | the buffer MB of length MLEN. Returns the last character read, which |
9255ee31 EZ |
669 | may be FIRST. Used by the search functions, among others. Very similar |
670 | to _rl_read_mbchar. */ | |
671 | int | |
cc88a640 | 672 | _rl_read_mbstring (first, mb, mlen) |
9255ee31 EZ |
673 | int first; |
674 | char *mb; | |
cc88a640 | 675 | int mlen; |
9255ee31 EZ |
676 | { |
677 | int i, c; | |
678 | mbstate_t ps; | |
679 | ||
680 | c = first; | |
cc88a640 JK |
681 | memset (mb, 0, mlen); |
682 | for (i = 0; c >= 0 && i < mlen; i++) | |
9255ee31 EZ |
683 | { |
684 | mb[i] = (char)c; | |
685 | memset (&ps, 0, sizeof (mbstate_t)); | |
686 | if (_rl_get_char_len (mb, &ps) == -2) | |
687 | { | |
688 | /* Read more for multibyte character */ | |
689 | RL_SETSTATE (RL_STATE_MOREINPUT); | |
690 | c = rl_read_key (); | |
691 | RL_UNSETSTATE (RL_STATE_MOREINPUT); | |
692 | } | |
693 | else | |
694 | break; | |
695 | } | |
696 | return c; | |
697 | } | |
698 | #endif /* HANDLE_MULTIBYTE */ |