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726f6388 JA |
1 | This file is read.def, from which is created read.c. |
2 | It implements the builtin "read" in Bash. | |
3 | ||
ac50fbac | 4 | Copyright (C) 1987-2012 Free Software Foundation, Inc. |
726f6388 JA |
5 | |
6 | This file is part of GNU Bash, the Bourne Again SHell. | |
7 | ||
3185942a JA |
8 | Bash 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 | |
11 | (at your option) any later version. | |
726f6388 | 12 | |
3185942a JA |
13 | Bash 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 | |
16 | GNU General Public License for more details. | |
726f6388 | 17 | |
3185942a JA |
18 | You should have received a copy of the GNU General Public License |
19 | along with Bash. If not, see <http://www.gnu.org/licenses/>. | |
726f6388 JA |
20 | |
21 | $PRODUCES read.c | |
22 | ||
23 | $BUILTIN read | |
24 | $FUNCTION read_builtin | |
0001803f | 25 | $SHORT_DOC read [-ers] [-a array] [-d delim] [-i text] [-n nchars] [-N nchars] [-p prompt] [-t timeout] [-u fd] [name ...] |
3185942a JA |
26 | Read a line from the standard input and split it into fields. |
27 | ||
28 | Reads a single line from the standard input, or from file descriptor FD | |
29 | if the -u option is supplied. The line is split into fields as with word | |
30 | splitting, and the first word is assigned to the first NAME, the second | |
31 | word to the second NAME, and so on, with any leftover words assigned to | |
32 | the last NAME. Only the characters found in $IFS are recognized as word | |
33 | delimiters. | |
34 | ||
35 | If no NAMEs are supplied, the line read is stored in the REPLY variable. | |
36 | ||
37 | Options: | |
38 | -a array assign the words read to sequential indices of the array | |
39 | variable ARRAY, starting at zero | |
40 | -d delim continue until the first character of DELIM is read, rather | |
41 | than newline | |
42 | -e use Readline to obtain the line in an interactive shell | |
43 | -i text Use TEXT as the initial text for Readline | |
44 | -n nchars return after reading NCHARS characters rather than waiting | |
0001803f CR |
45 | for a newline, but honor a delimiter if fewer than NCHARS |
46 | characters are read before the delimiter | |
47 | -N nchars return only after reading exactly NCHARS characters, unless | |
48 | EOF is encountered or read times out, ignoring any delimiter | |
3185942a JA |
49 | -p prompt output the string PROMPT without a trailing newline before |
50 | attempting to read | |
51 | -r do not allow backslashes to escape any characters | |
52 | -s do not echo input coming from a terminal | |
53 | -t timeout time out and return failure if a complete line of input is | |
ac50fbac | 54 | not read within TIMEOUT seconds. The value of the TMOUT |
3185942a | 55 | variable is the default timeout. TIMEOUT may be a |
ac50fbac CR |
56 | fractional number. If TIMEOUT is 0, read returns immediately, |
57 | without trying to read any data, returning success only if | |
58 | input is available on the specified file descriptor. The | |
3185942a JA |
59 | exit status is greater than 128 if the timeout is exceeded |
60 | -u fd read from file descriptor FD instead of the standard input | |
61 | ||
62 | Exit Status: | |
ac50fbac CR |
63 | The return code is zero, unless end-of-file is encountered, read times out |
64 | (in which case it's greater than 128), a variable assignment error occurs, | |
3185942a | 65 | or an invalid file descriptor is supplied as the argument to -u. |
726f6388 JA |
66 | $END |
67 | ||
ccc6cda3 JA |
68 | #include <config.h> |
69 | ||
bb70624e JA |
70 | #include "bashtypes.h" |
71 | #include "posixstat.h" | |
72 | ||
726f6388 | 73 | #include <stdio.h> |
ccc6cda3 | 74 | |
3185942a JA |
75 | #include "bashansi.h" |
76 | ||
ccc6cda3 JA |
77 | #if defined (HAVE_UNISTD_H) |
78 | # include <unistd.h> | |
79 | #endif | |
80 | ||
bb70624e | 81 | #include <signal.h> |
e8ce775d JA |
82 | #include <errno.h> |
83 | ||
28ef6c31 JA |
84 | #ifdef __CYGWIN__ |
85 | # include <fcntl.h> | |
86 | # include <io.h> | |
87 | #endif | |
88 | ||
b80f6443 JA |
89 | #include "../bashintl.h" |
90 | ||
726f6388 JA |
91 | #include "../shell.h" |
92 | #include "common.h" | |
ccc6cda3 | 93 | #include "bashgetopt.h" |
726f6388 | 94 | |
bb70624e JA |
95 | #include <shtty.h> |
96 | ||
ccc6cda3 JA |
97 | #if defined (READLINE) |
98 | #include "../bashline.h" | |
99 | #include <readline/readline.h> | |
100 | #endif | |
726f6388 | 101 | |
95732b49 JA |
102 | #if defined (BUFFERED_INPUT) |
103 | # include "input.h" | |
104 | #endif | |
105 | ||
ac50fbac CR |
106 | #include "shmbutil.h" |
107 | ||
e8ce775d JA |
108 | #if !defined(errno) |
109 | extern int errno; | |
110 | #endif | |
111 | ||
ac50fbac CR |
112 | extern void run_pending_traps __P((void)); |
113 | ||
114 | extern int posixly_correct; | |
115 | extern int trapped_signal_received; | |
116 | ||
3185942a JA |
117 | struct ttsave |
118 | { | |
119 | int fd; | |
120 | TTYSTRUCT *attrs; | |
121 | }; | |
122 | ||
ccc6cda3 | 123 | #if defined (READLINE) |
0628567a | 124 | static void reset_attempted_completion_function __P((char *)); |
3185942a JA |
125 | static int set_itext __P((void)); |
126 | static char *edit_line __P((char *, char *)); | |
f73dda09 JA |
127 | static void set_eol_delim __P((int)); |
128 | static void reset_eol_delim __P((char *)); | |
ccc6cda3 | 129 | #endif |
f73dda09 | 130 | static SHELL_VAR *bind_read_variable __P((char *, char *)); |
3185942a JA |
131 | #if defined (HANDLE_MULTIBYTE) |
132 | static int read_mbchar __P((int, char *, int, int, int)); | |
133 | #endif | |
134 | static void ttyrestore __P((struct ttsave *)); | |
f73dda09 JA |
135 | |
136 | static sighandler sigalrm __P((int)); | |
137 | static void reset_alarm __P((void)); | |
ccc6cda3 | 138 | |
ac50fbac CR |
139 | /* Try this to see what the rest of the shell can do with the information. */ |
140 | procenv_t alrmbuf; | |
141 | int sigalrm_seen; | |
142 | ||
84c617ec | 143 | static int reading, tty_modified; |
bb70624e | 144 | static SigHandler *old_alrm; |
f73dda09 | 145 | static unsigned char delim; |
bb70624e | 146 | |
84c617ec CR |
147 | static struct ttsave termsave; |
148 | ||
ac50fbac CR |
149 | /* In all cases, SIGALRM just sets a flag that we check periodically. This |
150 | avoids problems with the semi-tricky stuff we do with the xfree of | |
151 | input_string at the top of the unwind-protect list (see below). */ | |
152 | ||
153 | /* Set a flag that CHECK_ALRM can check. This relies on zread calling | |
154 | trap.c:check_signals_and_traps(), which knows about sigalrm_seen and | |
155 | alrmbuf. */ | |
bb70624e JA |
156 | static sighandler |
157 | sigalrm (s) | |
158 | int s; | |
159 | { | |
ac50fbac | 160 | sigalrm_seen = 1; |
bb70624e JA |
161 | } |
162 | ||
163 | static void | |
164 | reset_alarm () | |
165 | { | |
166 | set_signal_handler (SIGALRM, old_alrm); | |
3185942a | 167 | falarm (0, 0); |
bb70624e JA |
168 | } |
169 | ||
726f6388 JA |
170 | /* Read the value of the shell variables whose names follow. |
171 | The reading is done from the current input stream, whatever | |
172 | that may be. Successive words of the input line are assigned | |
173 | to the variables mentioned in LIST. The last variable in LIST | |
174 | gets the remainder of the words on the line. If no variables | |
ccc6cda3 JA |
175 | are mentioned in LIST, then the default variable is $REPLY. */ |
176 | int | |
726f6388 JA |
177 | read_builtin (list) |
178 | WORD_LIST *list; | |
179 | { | |
180 | register char *varname; | |
f1be666c JA |
181 | int size, i, nr, pass_next, saw_escape, eof, opt, retval, code, print_ps2; |
182 | int input_is_tty, input_is_pipe, unbuffered_read, skip_ctlesc, skip_ctlnul; | |
ac50fbac | 183 | int raw, edit, nchars, silent, have_timeout, ignore_delim, fd, lastsig, t_errno; |
3185942a JA |
184 | unsigned int tmsec, tmusec; |
185 | long ival, uval; | |
7117c2d2 | 186 | intmax_t intval; |
ccc6cda3 JA |
187 | char c; |
188 | char *input_string, *orig_input_string, *ifs_chars, *prompt, *arrayname; | |
f1be666c | 189 | char *e, *t, *t1, *ps2, *tofree; |
bb70624e | 190 | struct stat tsb; |
726f6388 | 191 | SHELL_VAR *var; |
3185942a | 192 | TTYSTRUCT ttattrs, ttset; |
ccc6cda3 JA |
193 | #if defined (ARRAY_VARS) |
194 | WORD_LIST *alist; | |
195 | #endif | |
196 | #if defined (READLINE) | |
3185942a | 197 | char *rlbuf, *itext; |
ccc6cda3 JA |
198 | int rlind; |
199 | #endif | |
726f6388 | 200 | |
f73dda09 JA |
201 | USE_VAR(size); |
202 | USE_VAR(i); | |
203 | USE_VAR(pass_next); | |
f1be666c | 204 | USE_VAR(print_ps2); |
f73dda09 JA |
205 | USE_VAR(saw_escape); |
206 | USE_VAR(input_is_pipe); | |
207 | /* USE_VAR(raw); */ | |
208 | USE_VAR(edit); | |
3185942a JA |
209 | USE_VAR(tmsec); |
210 | USE_VAR(tmusec); | |
f73dda09 JA |
211 | USE_VAR(nchars); |
212 | USE_VAR(silent); | |
213 | USE_VAR(ifs_chars); | |
214 | USE_VAR(prompt); | |
215 | USE_VAR(arrayname); | |
216 | #if defined (READLINE) | |
217 | USE_VAR(rlbuf); | |
218 | USE_VAR(rlind); | |
3185942a | 219 | USE_VAR(itext); |
f73dda09 JA |
220 | #endif |
221 | USE_VAR(list); | |
f1be666c | 222 | USE_VAR(ps2); |
ac50fbac CR |
223 | USE_VAR(lastsig); |
224 | ||
84c617ec | 225 | sigalrm_seen = reading = tty_modified = 0; |
f73dda09 | 226 | |
726f6388 | 227 | i = 0; /* Index into the string that we are reading. */ |
ccc6cda3 | 228 | raw = edit = 0; /* Not reading raw input by default. */ |
bb70624e | 229 | silent = 0; |
ccc6cda3 | 230 | arrayname = prompt = (char *)NULL; |
7117c2d2 | 231 | fd = 0; /* file descriptor to read from */ |
ccc6cda3 JA |
232 | |
233 | #if defined (READLINE) | |
3185942a | 234 | rlbuf = itext = (char *)0; |
ccc6cda3 JA |
235 | rlind = 0; |
236 | #endif | |
726f6388 | 237 | |
3185942a | 238 | tmsec = tmusec = 0; /* no timeout */ |
95732b49 | 239 | nr = nchars = input_is_tty = input_is_pipe = unbuffered_read = have_timeout = 0; |
bb70624e | 240 | delim = '\n'; /* read until newline */ |
0001803f | 241 | ignore_delim = 0; |
bb70624e | 242 | |
ccc6cda3 | 243 | reset_internal_getopt (); |
0001803f | 244 | while ((opt = internal_getopt (list, "ersa:d:i:n:p:t:u:N:")) != -1) |
726f6388 | 245 | { |
ccc6cda3 | 246 | switch (opt) |
28ef6c31 JA |
247 | { |
248 | case 'r': | |
ccc6cda3 | 249 | raw = 1; |
726f6388 | 250 | break; |
ccc6cda3 JA |
251 | case 'p': |
252 | prompt = list_optarg; | |
253 | break; | |
bb70624e JA |
254 | case 's': |
255 | silent = 1; | |
256 | break; | |
ccc6cda3 JA |
257 | case 'e': |
258 | #if defined (READLINE) | |
259 | edit = 1; | |
3185942a JA |
260 | #endif |
261 | break; | |
262 | case 'i': | |
263 | #if defined (READLINE) | |
264 | itext = list_optarg; | |
ccc6cda3 JA |
265 | #endif |
266 | break; | |
267 | #if defined (ARRAY_VARS) | |
268 | case 'a': | |
269 | arrayname = list_optarg; | |
270 | break; | |
271 | #endif | |
bb70624e | 272 | case 't': |
3185942a JA |
273 | code = uconvert (list_optarg, &ival, &uval); |
274 | if (code == 0 || ival < 0 || uval < 0) | |
bb70624e | 275 | { |
b80f6443 | 276 | builtin_error (_("%s: invalid timeout specification"), list_optarg); |
bb70624e JA |
277 | return (EXECUTION_FAILURE); |
278 | } | |
279 | else | |
f73dda09 JA |
280 | { |
281 | have_timeout = 1; | |
3185942a JA |
282 | tmsec = ival; |
283 | tmusec = uval; | |
f73dda09 | 284 | } |
bb70624e | 285 | break; |
0001803f CR |
286 | case 'N': |
287 | ignore_delim = 1; | |
288 | delim = -1; | |
bb70624e | 289 | case 'n': |
7117c2d2 JA |
290 | code = legal_number (list_optarg, &intval); |
291 | if (code == 0 || intval < 0 || intval != (int)intval) | |
bb70624e | 292 | { |
7117c2d2 | 293 | sh_invalidnum (list_optarg); |
bb70624e JA |
294 | return (EXECUTION_FAILURE); |
295 | } | |
296 | else | |
7117c2d2 JA |
297 | nchars = intval; |
298 | break; | |
299 | case 'u': | |
300 | code = legal_number (list_optarg, &intval); | |
301 | if (code == 0 || intval < 0 || intval != (int)intval) | |
302 | { | |
b80f6443 | 303 | builtin_error (_("%s: invalid file descriptor specification"), list_optarg); |
7117c2d2 JA |
304 | return (EXECUTION_FAILURE); |
305 | } | |
306 | else | |
307 | fd = intval; | |
308 | if (sh_validfd (fd) == 0) | |
309 | { | |
b80f6443 | 310 | builtin_error (_("%d: invalid file descriptor: %s"), fd, strerror (errno)); |
7117c2d2 JA |
311 | return (EXECUTION_FAILURE); |
312 | } | |
bb70624e JA |
313 | break; |
314 | case 'd': | |
315 | delim = *list_optarg; | |
316 | break; | |
ccc6cda3 JA |
317 | default: |
318 | builtin_usage (); | |
726f6388 JA |
319 | return (EX_USAGE); |
320 | } | |
726f6388 | 321 | } |
ccc6cda3 | 322 | list = loptend; |
726f6388 | 323 | |
17345e5a JA |
324 | /* `read -t 0 var' tests whether input is available with select/FIONREAD, |
325 | and fails if those are unavailable */ | |
3185942a JA |
326 | if (have_timeout && tmsec == 0 && tmusec == 0) |
327 | #if 0 | |
bb70624e | 328 | return (EXECUTION_FAILURE); |
3185942a JA |
329 | #else |
330 | return (input_avail (fd) ? EXECUTION_SUCCESS : EXECUTION_FAILURE); | |
331 | #endif | |
bb70624e | 332 | |
ac50fbac CR |
333 | /* Convenience: check early whether or not the first of possibly several |
334 | variable names is a valid identifier, and bail early if so. */ | |
335 | #if defined (ARRAY_VARS) | |
336 | if (list && legal_identifier (list->word->word) == 0 && valid_array_reference (list->word->word) == 0) | |
337 | #else | |
338 | if (list && legal_identifier (list->word->word) == 0) | |
339 | #endif | |
340 | { | |
341 | sh_invalidid (list->word->word); | |
342 | return (EXECUTION_FAILURE); | |
343 | } | |
344 | ||
0001803f CR |
345 | /* If we're asked to ignore the delimiter, make sure we do. */ |
346 | if (ignore_delim) | |
347 | delim = -1; | |
348 | ||
ccc6cda3 | 349 | /* IF IFS is unset, we use the default of " \t\n". */ |
7117c2d2 JA |
350 | ifs_chars = getifs (); |
351 | if (ifs_chars == 0) /* XXX - shouldn't happen */ | |
352 | ifs_chars = ""; | |
0001803f CR |
353 | /* If we want to read exactly NCHARS chars, don't split on IFS */ |
354 | if (ignore_delim) | |
355 | ifs_chars = ""; | |
3185942a JA |
356 | for (skip_ctlesc = skip_ctlnul = 0, e = ifs_chars; *e; e++) |
357 | skip_ctlesc |= *e == CTLESC, skip_ctlnul |= *e == CTLNUL; | |
726f6388 | 358 | |
7117c2d2 | 359 | input_string = (char *)xmalloc (size = 112); /* XXX was 128 */ |
3185942a | 360 | input_string[0] = '\0'; |
7117c2d2 JA |
361 | |
362 | /* $TMOUT, if set, is the default timeout for read. */ | |
363 | if (have_timeout == 0 && (e = get_string_value ("TMOUT"))) | |
364 | { | |
3185942a JA |
365 | code = uconvert (e, &ival, &uval); |
366 | if (code == 0 || ival < 0 || uval < 0) | |
367 | tmsec = tmusec = 0; | |
7117c2d2 | 368 | else |
3185942a JA |
369 | { |
370 | tmsec = ival; | |
371 | tmusec = uval; | |
372 | } | |
7117c2d2 | 373 | } |
726f6388 JA |
374 | |
375 | begin_unwind_frame ("read_builtin"); | |
726f6388 | 376 | |
95732b49 JA |
377 | #if defined (BUFFERED_INPUT) |
378 | if (interactive == 0 && default_buffered_input >= 0 && fd_is_bash_input (fd)) | |
379 | sync_buffered_stream (default_buffered_input); | |
380 | #endif | |
381 | ||
7117c2d2 | 382 | input_is_tty = isatty (fd); |
bb70624e | 383 | if (input_is_tty == 0) |
28ef6c31 | 384 | #ifndef __CYGWIN__ |
95732b49 | 385 | input_is_pipe = (lseek (fd, 0L, SEEK_CUR) < 0) && (errno == ESPIPE); |
bb70624e JA |
386 | #else |
387 | input_is_pipe = 1; | |
388 | #endif | |
389 | ||
390 | /* If the -p, -e or -s flags were given, but input is not coming from the | |
ccc6cda3 | 391 | terminal, turn them off. */ |
bb70624e | 392 | if ((prompt || edit || silent) && input_is_tty == 0) |
ccc6cda3 JA |
393 | { |
394 | prompt = (char *)NULL; | |
3185942a JA |
395 | #if defined (READLINE) |
396 | itext = (char *)NULL; | |
397 | #endif | |
bb70624e | 398 | edit = silent = 0; |
ccc6cda3 JA |
399 | } |
400 | ||
7117c2d2 JA |
401 | #if defined (READLINE) |
402 | if (edit) | |
403 | add_unwind_protect (xfree, rlbuf); | |
404 | #endif | |
405 | ||
726f6388 JA |
406 | pass_next = 0; /* Non-zero signifies last char was backslash. */ |
407 | saw_escape = 0; /* Non-zero signifies that we saw an escape char */ | |
408 | ||
3185942a | 409 | if (tmsec > 0 || tmusec > 0) |
bb70624e JA |
410 | { |
411 | /* Turn off the timeout if stdin is a regular file (e.g. from | |
412 | input redirection). */ | |
7117c2d2 | 413 | if ((fstat (fd, &tsb) < 0) || S_ISREG (tsb.st_mode)) |
3185942a | 414 | tmsec = tmusec = 0; |
bb70624e JA |
415 | } |
416 | ||
3185942a | 417 | if (tmsec > 0 || tmusec > 0) |
bb70624e | 418 | { |
ac50fbac | 419 | code = setjmp_nosigs (alrmbuf); |
bb70624e JA |
420 | if (code) |
421 | { | |
ac50fbac | 422 | sigalrm_seen = 0; |
89a92869 CR |
423 | /* Tricky. The top of the unwind-protect stack is the free of |
424 | input_string. We want to run all the rest and use input_string, | |
43aebe92 | 425 | so we have to save input_string temporarily, run the unwind- |
ac50fbac CR |
426 | protects, then restore input_string so we can use it later */ |
427 | orig_input_string = 0; | |
3185942a | 428 | input_string[i] = '\0'; /* make sure it's terminated */ |
43aebe92 CR |
429 | if (i == 0) |
430 | { | |
431 | t = (char *)xmalloc (1); | |
432 | t[0] = 0; | |
433 | } | |
434 | else | |
435 | t = savestring (input_string); | |
436 | ||
437 | run_unwind_frame ("read_builtin"); | |
438 | input_string = t; | |
89a92869 | 439 | retval = 128+SIGALRM; |
3185942a | 440 | goto assign_vars; |
bb70624e | 441 | } |
84c617ec CR |
442 | if (interactive_shell == 0) |
443 | initialize_terminating_signals (); | |
bb70624e JA |
444 | old_alrm = set_signal_handler (SIGALRM, sigalrm); |
445 | add_unwind_protect (reset_alarm, (char *)NULL); | |
0628567a JA |
446 | #if defined (READLINE) |
447 | if (edit) | |
9b86eb22 CR |
448 | { |
449 | add_unwind_protect (reset_attempted_completion_function, (char *)NULL); | |
450 | add_unwind_protect (bashline_reset_event_hook, (char *)NULL); | |
451 | } | |
0628567a | 452 | #endif |
3185942a | 453 | falarm (tmsec, tmusec); |
bb70624e JA |
454 | } |
455 | ||
456 | /* If we've been asked to read only NCHARS chars, or we're using some | |
457 | character other than newline to terminate the line, do the right | |
458 | thing to readline or the tty. */ | |
459 | if (nchars > 0 || delim != '\n') | |
460 | { | |
461 | #if defined (READLINE) | |
462 | if (edit) | |
463 | { | |
464 | if (nchars > 0) | |
465 | { | |
466 | unwind_protect_int (rl_num_chars_to_read); | |
467 | rl_num_chars_to_read = nchars; | |
468 | } | |
469 | if (delim != '\n') | |
470 | { | |
471 | set_eol_delim (delim); | |
472 | add_unwind_protect (reset_eol_delim, (char *)NULL); | |
473 | } | |
474 | } | |
475 | else | |
476 | #endif | |
477 | if (input_is_tty) | |
28ef6c31 | 478 | { |
3185942a JA |
479 | /* ttsave() */ |
480 | termsave.fd = fd; | |
481 | ttgetattr (fd, &ttattrs); | |
482 | termsave.attrs = &ttattrs; | |
483 | ||
484 | ttset = ttattrs; | |
17345e5a JA |
485 | i = silent ? ttfd_cbreak (fd, &ttset) : ttfd_onechar (fd, &ttset); |
486 | if (i < 0) | |
487 | sh_ttyerror (1); | |
84c617ec | 488 | tty_modified = 1; |
3185942a | 489 | add_unwind_protect ((Function *)ttyrestore, (char *)&termsave); |
84c617ec CR |
490 | if (interactive_shell == 0) |
491 | initialize_terminating_signals (); | |
bb70624e JA |
492 | } |
493 | } | |
494 | else if (silent) /* turn off echo but leave term in canonical mode */ | |
495 | { | |
3185942a JA |
496 | /* ttsave (); */ |
497 | termsave.fd = fd; | |
498 | ttgetattr (fd, &ttattrs); | |
499 | termsave.attrs = &ttattrs; | |
500 | ||
501 | ttset = ttattrs; | |
17345e5a JA |
502 | i = ttfd_noecho (fd, &ttset); /* ttnoecho (); */ |
503 | if (i < 0) | |
504 | sh_ttyerror (1); | |
3185942a | 505 | |
84c617ec | 506 | tty_modified = 1; |
3185942a | 507 | add_unwind_protect ((Function *)ttyrestore, (char *)&termsave); |
84c617ec CR |
508 | if (interactive_shell == 0) |
509 | initialize_terminating_signals (); | |
bb70624e JA |
510 | } |
511 | ||
28ef6c31 JA |
512 | /* This *must* be the top unwind-protect on the stack, so the manipulation |
513 | of the unwind-protect stack after the realloc() works right. */ | |
514 | add_unwind_protect (xfree, input_string); | |
28ef6c31 | 515 | |
ac50fbac CR |
516 | CHECK_ALRM; |
517 | if ((nchars > 0) && (input_is_tty == 0) && ignore_delim) /* read -N */ | |
518 | unbuffered_read = 2; | |
519 | else if ((nchars > 0) || (delim != '\n') || input_is_pipe) | |
520 | unbuffered_read = 1; | |
bb70624e | 521 | |
3185942a JA |
522 | if (prompt && edit == 0) |
523 | { | |
524 | fprintf (stderr, "%s", prompt); | |
525 | fflush (stderr); | |
526 | } | |
527 | ||
28ef6c31 JA |
528 | #if defined (__CYGWIN__) && defined (O_TEXT) |
529 | setmode (0, O_TEXT); | |
530 | #endif | |
531 | ||
f1be666c JA |
532 | ps2 = 0; |
533 | for (print_ps2 = eof = retval = 0;;) | |
726f6388 | 534 | { |
ac50fbac CR |
535 | CHECK_ALRM; |
536 | ||
ccc6cda3 JA |
537 | #if defined (READLINE) |
538 | if (edit) | |
539 | { | |
540 | if (rlbuf && rlbuf[rlind] == '\0') | |
541 | { | |
d166f048 | 542 | xfree (rlbuf); |
ccc6cda3 JA |
543 | rlbuf = (char *)0; |
544 | } | |
545 | if (rlbuf == 0) | |
546 | { | |
ac50fbac | 547 | reading = 1; |
3185942a | 548 | rlbuf = edit_line (prompt ? prompt : "", itext); |
ac50fbac | 549 | reading = 0; |
ccc6cda3 JA |
550 | rlind = 0; |
551 | } | |
552 | if (rlbuf == 0) | |
553 | { | |
554 | eof = 1; | |
555 | break; | |
556 | } | |
557 | c = rlbuf[rlind++]; | |
558 | } | |
559 | else | |
b72432fd | 560 | { |
e8ce775d JA |
561 | #endif |
562 | ||
f1be666c JA |
563 | if (print_ps2) |
564 | { | |
565 | if (ps2 == 0) | |
566 | ps2 = get_string_value ("PS2"); | |
567 | fprintf (stderr, "%s", ps2 ? ps2 : ""); | |
568 | fflush (stderr); | |
569 | print_ps2 = 0; | |
570 | } | |
571 | ||
ac50fbac CR |
572 | #if 0 |
573 | if (posixly_correct == 0) | |
574 | interrupt_immediately++; | |
575 | #endif | |
576 | reading = 1; | |
577 | if (unbuffered_read == 2) | |
578 | retval = posixly_correct ? zreadintr (fd, &c, 1) : zreadn (fd, &c, nchars - nr); | |
579 | else if (unbuffered_read) | |
580 | retval = posixly_correct ? zreadintr (fd, &c, 1) : zread (fd, &c, 1); | |
bb70624e | 581 | else |
ac50fbac CR |
582 | retval = posixly_correct ? zreadcintr (fd, &c) : zreadc (fd, &c); |
583 | reading = 0; | |
584 | #if 0 | |
585 | if (posixly_correct == 0) | |
586 | interrupt_immediately--; | |
587 | #endif | |
bb70624e | 588 | |
e8ce775d | 589 | if (retval <= 0) |
ccc6cda3 | 590 | { |
ac50fbac CR |
591 | if (retval < 0 && errno == EINTR) |
592 | { | |
593 | lastsig = LASTSIG(); | |
594 | if (lastsig == 0) | |
595 | lastsig = trapped_signal_received; | |
596 | run_pending_traps (); /* because interrupt_immediately is not set */ | |
597 | } | |
598 | else | |
599 | lastsig = 0; | |
84c617ec CR |
600 | if (terminating_signal && tty_modified) |
601 | ttyrestore (&termsave); /* fix terminal before exiting */ | |
ac50fbac | 602 | CHECK_TERMSIG; |
ccc6cda3 JA |
603 | eof = 1; |
604 | break; | |
605 | } | |
606 | ||
ac50fbac CR |
607 | CHECK_ALRM; |
608 | ||
b72432fd JA |
609 | #if defined (READLINE) |
610 | } | |
611 | #endif | |
612 | ||
ac50fbac | 613 | CHECK_ALRM; |
3185942a | 614 | if (i + 4 >= size) /* XXX was i + 2; use i + 4 for multibyte/read_mbchar */ |
28ef6c31 | 615 | { |
ac50fbac CR |
616 | char *t; |
617 | t = (char *)xrealloc (input_string, size += 128); | |
618 | ||
619 | /* Only need to change unwind-protect if input_string changes */ | |
620 | if (t != input_string) | |
621 | { | |
622 | input_string = t; | |
623 | remove_unwind_protect (); | |
624 | add_unwind_protect (xfree, input_string); | |
625 | } | |
28ef6c31 | 626 | } |
726f6388 JA |
627 | |
628 | /* If the next character is to be accepted verbatim, a backslash | |
629 | newline pair still disappears from the input. */ | |
630 | if (pass_next) | |
631 | { | |
95732b49 | 632 | pass_next = 0; |
726f6388 | 633 | if (c == '\n') |
f1be666c JA |
634 | { |
635 | i--; /* back up over the CTLESC */ | |
636 | if (interactive && input_is_tty && raw == 0) | |
637 | print_ps2 = 1; | |
638 | } | |
726f6388 | 639 | else |
95732b49 | 640 | goto add_char; |
726f6388 JA |
641 | continue; |
642 | } | |
643 | ||
3185942a | 644 | /* This may cause problems if IFS contains CTLESC */ |
ccc6cda3 | 645 | if (c == '\\' && raw == 0) |
726f6388 JA |
646 | { |
647 | pass_next++; | |
3185942a JA |
648 | if (skip_ctlesc == 0) |
649 | { | |
650 | saw_escape++; | |
651 | input_string[i++] = CTLESC; | |
652 | } | |
726f6388 JA |
653 | continue; |
654 | } | |
655 | ||
ac50fbac | 656 | if (ignore_delim == 0 && (unsigned char)c == delim) |
726f6388 JA |
657 | break; |
658 | ||
ac50fbac CR |
659 | if (c == '\0' && delim != '\0') |
660 | continue; /* skip NUL bytes in input */ | |
661 | ||
3185942a | 662 | if ((skip_ctlesc == 0 && c == CTLESC) || (skip_ctlnul == 0 && c == CTLNUL)) |
726f6388 JA |
663 | { |
664 | saw_escape++; | |
665 | input_string[i++] = CTLESC; | |
666 | } | |
667 | ||
95732b49 | 668 | add_char: |
726f6388 | 669 | input_string[i++] = c; |
ac50fbac | 670 | CHECK_ALRM; |
3185942a JA |
671 | |
672 | #if defined (HANDLE_MULTIBYTE) | |
ac50fbac | 673 | if (nchars > 0 && MB_CUR_MAX > 1 && is_basic (c) == 0) |
3185942a JA |
674 | { |
675 | input_string[i] = '\0'; /* for simplicity and debugging */ | |
676 | i += read_mbchar (fd, input_string, i, c, unbuffered_read); | |
677 | } | |
678 | #endif | |
679 | ||
95732b49 | 680 | nr++; |
bb70624e | 681 | |
95732b49 | 682 | if (nchars > 0 && nr >= nchars) |
bb70624e | 683 | break; |
726f6388 JA |
684 | } |
685 | input_string[i] = '\0'; | |
ac50fbac | 686 | CHECK_ALRM; |
726f6388 | 687 | |
7117c2d2 JA |
688 | if (retval < 0) |
689 | { | |
ac50fbac CR |
690 | t_errno = errno; |
691 | if (errno != EINTR) | |
692 | builtin_error (_("read error: %d: %s"), fd, strerror (errno)); | |
0628567a | 693 | run_unwind_frame ("read_builtin"); |
ac50fbac | 694 | return ((t_errno != EINTR) ? EXECUTION_FAILURE : 128+lastsig); |
7117c2d2 | 695 | } |
7117c2d2 | 696 | |
3185942a | 697 | if (tmsec > 0 || tmusec > 0) |
bb70624e JA |
698 | reset_alarm (); |
699 | ||
700 | if (nchars > 0 || delim != '\n') | |
701 | { | |
702 | #if defined (READLINE) | |
703 | if (edit) | |
704 | { | |
705 | if (nchars > 0) | |
706 | rl_num_chars_to_read = 0; | |
707 | if (delim != '\n') | |
f73dda09 | 708 | reset_eol_delim ((char *)NULL); |
bb70624e JA |
709 | } |
710 | else | |
711 | #endif | |
712 | if (input_is_tty) | |
3185942a | 713 | ttyrestore (&termsave); |
bb70624e JA |
714 | } |
715 | else if (silent) | |
3185942a | 716 | ttyrestore (&termsave); |
bb70624e JA |
717 | |
718 | if (unbuffered_read == 0) | |
7117c2d2 | 719 | zsyncfd (fd); |
bb70624e | 720 | |
726f6388 JA |
721 | discard_unwind_frame ("read_builtin"); |
722 | ||
ccc6cda3 | 723 | retval = eof ? EXECUTION_FAILURE : EXECUTION_SUCCESS; |
726f6388 | 724 | |
3185942a JA |
725 | assign_vars: |
726 | ||
ccc6cda3 JA |
727 | #if defined (ARRAY_VARS) |
728 | /* If -a was given, take the string read, break it into a list of words, | |
729 | an assign them to `arrayname' in turn. */ | |
730 | if (arrayname) | |
726f6388 | 731 | { |
b80f6443 JA |
732 | if (legal_identifier (arrayname) == 0) |
733 | { | |
734 | sh_invalidid (arrayname); | |
735 | xfree (input_string); | |
736 | return (EXECUTION_FAILURE); | |
737 | } | |
738 | ||
f73dda09 | 739 | var = find_or_make_array_variable (arrayname, 1); |
ccc6cda3 | 740 | if (var == 0) |
0628567a JA |
741 | { |
742 | xfree (input_string); | |
743 | return EXECUTION_FAILURE; /* readonly or noassign */ | |
744 | } | |
b4d40164 CR |
745 | if (assoc_p (var)) |
746 | { | |
747 | builtin_error (_("%s: cannot convert associative to indexed array"), arrayname); | |
748 | xfree (input_string); | |
749 | return EXECUTION_FAILURE; /* existing associative array */ | |
750 | } | |
ac50fbac CR |
751 | else if (invisible_p (var)) |
752 | VUNSETATTR (var, att_invisible); | |
7117c2d2 | 753 | array_flush (array_cell (var)); |
ccc6cda3 JA |
754 | |
755 | alist = list_string (input_string, ifs_chars, 0); | |
756 | if (alist) | |
757 | { | |
0628567a JA |
758 | if (saw_escape) |
759 | dequote_list (alist); | |
760 | else | |
761 | word_list_remove_quoted_nulls (alist); | |
95732b49 | 762 | assign_array_var_from_word_list (var, alist, 0); |
ccc6cda3 JA |
763 | dispose_words (alist); |
764 | } | |
d166f048 | 765 | xfree (input_string); |
ccc6cda3 | 766 | return (retval); |
726f6388 | 767 | } |
ccc6cda3 | 768 | #endif /* ARRAY_VARS */ |
726f6388 | 769 | |
d166f048 JA |
770 | /* If there are no variables, save the text of the line read to the |
771 | variable $REPLY. ksh93 strips leading and trailing IFS whitespace, | |
772 | so that `read x ; echo "$x"' and `read ; echo "$REPLY"' behave the | |
773 | same way, but I believe that the difference in behaviors is useful | |
774 | enough to not do it. Without the bash behavior, there is no way | |
28ef6c31 JA |
775 | to read a line completely without interpretation or modification |
776 | unless you mess with $IFS (e.g., setting it to the empty string). | |
d166f048 JA |
777 | If you disagree, change the occurrences of `#if 0' to `#if 1' below. */ |
778 | if (list == 0) | |
726f6388 | 779 | { |
d166f048 JA |
780 | #if 0 |
781 | orig_input_string = input_string; | |
7117c2d2 | 782 | for (t = input_string; ifs_chars && *ifs_chars && spctabnl(*t) && isifs(*t); t++) |
d166f048 JA |
783 | ; |
784 | input_string = t; | |
785 | input_string = strip_trailing_ifs_whitespace (input_string, ifs_chars, saw_escape); | |
786 | #endif | |
787 | ||
726f6388 JA |
788 | if (saw_escape) |
789 | { | |
790 | t = dequote_string (input_string); | |
95732b49 | 791 | var = bind_variable ("REPLY", t, 0); |
726f6388 JA |
792 | free (t); |
793 | } | |
794 | else | |
95732b49 | 795 | var = bind_variable ("REPLY", input_string, 0); |
bb70624e | 796 | VUNSETATTR (var, att_invisible); |
28ef6c31 | 797 | |
ac50fbac | 798 | xfree (input_string); |
ccc6cda3 | 799 | return (retval); |
726f6388 | 800 | } |
ccc6cda3 JA |
801 | |
802 | /* This code implements the Posix.2 spec for splitting the words | |
803 | read and assigning them to variables. */ | |
804 | orig_input_string = input_string; | |
805 | ||
806 | /* Remove IFS white space at the beginning of the input string. If | |
807 | $IFS is null, no field splitting is performed. */ | |
7117c2d2 | 808 | for (t = input_string; ifs_chars && *ifs_chars && spctabnl(*t) && isifs(*t); t++) |
ccc6cda3 JA |
809 | ; |
810 | input_string = t; | |
ccc6cda3 | 811 | for (; list->next; list = list->next) |
726f6388 | 812 | { |
ccc6cda3 JA |
813 | varname = list->word->word; |
814 | #if defined (ARRAY_VARS) | |
815 | if (legal_identifier (varname) == 0 && valid_array_reference (varname) == 0) | |
816 | #else | |
817 | if (legal_identifier (varname) == 0) | |
818 | #endif | |
726f6388 | 819 | { |
7117c2d2 | 820 | sh_invalidid (varname); |
f73dda09 | 821 | xfree (orig_input_string); |
ccc6cda3 JA |
822 | return (EXECUTION_FAILURE); |
823 | } | |
726f6388 | 824 | |
ccc6cda3 JA |
825 | /* If there are more variables than words read from the input, |
826 | the remaining variables are set to the empty string. */ | |
827 | if (*input_string) | |
828 | { | |
829 | /* This call updates INPUT_STRING. */ | |
830 | t = get_word_from_string (&input_string, ifs_chars, &e); | |
831 | if (t) | |
832 | *e = '\0'; | |
833 | /* Don't bother to remove the CTLESC unless we added one | |
834 | somewhere while reading the string. */ | |
835 | if (t && saw_escape) | |
726f6388 | 836 | { |
ccc6cda3 JA |
837 | t1 = dequote_string (t); |
838 | var = bind_read_variable (varname, t1); | |
f73dda09 | 839 | xfree (t1); |
726f6388 JA |
840 | } |
841 | else | |
952a5758 | 842 | var = bind_read_variable (varname, t ? t : ""); |
ccc6cda3 JA |
843 | } |
844 | else | |
845 | { | |
846 | t = (char *)0; | |
847 | var = bind_read_variable (varname, ""); | |
726f6388 JA |
848 | } |
849 | ||
ccc6cda3 JA |
850 | FREE (t); |
851 | if (var == 0) | |
726f6388 | 852 | { |
f73dda09 | 853 | xfree (orig_input_string); |
726f6388 JA |
854 | return (EXECUTION_FAILURE); |
855 | } | |
856 | ||
ccc6cda3 | 857 | stupidly_hack_special_variables (varname); |
bb70624e | 858 | VUNSETATTR (var, att_invisible); |
ccc6cda3 JA |
859 | } |
860 | ||
861 | /* Now assign the rest of the line to the last variable argument. */ | |
862 | #if defined (ARRAY_VARS) | |
863 | if (legal_identifier (list->word->word) == 0 && valid_array_reference (list->word->word) == 0) | |
864 | #else | |
865 | if (legal_identifier (list->word->word) == 0) | |
866 | #endif | |
867 | { | |
7117c2d2 | 868 | sh_invalidid (list->word->word); |
f73dda09 | 869 | xfree (orig_input_string); |
ccc6cda3 | 870 | return (EXECUTION_FAILURE); |
726f6388 JA |
871 | } |
872 | ||
95732b49 | 873 | #if 0 |
ccc6cda3 JA |
874 | /* This has to be done this way rather than using string_list |
875 | and list_string because Posix.2 says that the last variable gets the | |
876 | remaining words and their intervening separators. */ | |
877 | input_string = strip_trailing_ifs_whitespace (input_string, ifs_chars, saw_escape); | |
95732b49 JA |
878 | #else |
879 | /* Check whether or not the number of fields is exactly the same as the | |
880 | number of variables. */ | |
f1be666c | 881 | tofree = NULL; |
95732b49 JA |
882 | if (*input_string) |
883 | { | |
884 | t1 = input_string; | |
885 | t = get_word_from_string (&input_string, ifs_chars, &e); | |
886 | if (*input_string == 0) | |
f1be666c | 887 | tofree = input_string = t; |
95732b49 | 888 | else |
89a92869 CR |
889 | { |
890 | input_string = strip_trailing_ifs_whitespace (t1, ifs_chars, saw_escape); | |
891 | tofree = t; | |
892 | } | |
95732b49 JA |
893 | } |
894 | #endif | |
ccc6cda3 | 895 | |
0213a83a | 896 | if (saw_escape && input_string && *input_string) |
ccc6cda3 JA |
897 | { |
898 | t = dequote_string (input_string); | |
899 | var = bind_read_variable (list->word->word, t); | |
f73dda09 | 900 | xfree (t); |
ccc6cda3 JA |
901 | } |
902 | else | |
952a5758 | 903 | var = bind_read_variable (list->word->word, input_string ? input_string : ""); |
f1be666c | 904 | |
ccc6cda3 | 905 | if (var) |
495aee44 CR |
906 | { |
907 | stupidly_hack_special_variables (list->word->word); | |
908 | VUNSETATTR (var, att_invisible); | |
909 | } | |
910 | else | |
911 | retval = EXECUTION_FAILURE; | |
912 | ||
913 | FREE (tofree); | |
f73dda09 | 914 | xfree (orig_input_string); |
ccc6cda3 | 915 | |
726f6388 JA |
916 | return (retval); |
917 | } | |
918 | ||
ccc6cda3 JA |
919 | static SHELL_VAR * |
920 | bind_read_variable (name, value) | |
921 | char *name, *value; | |
922 | { | |
495aee44 | 923 | SHELL_VAR *v; |
ac50fbac | 924 | |
ccc6cda3 JA |
925 | #if defined (ARRAY_VARS) |
926 | if (valid_array_reference (name) == 0) | |
495aee44 | 927 | v = bind_variable (name, value, 0); |
ccc6cda3 | 928 | else |
495aee44 | 929 | v = assign_array_element (name, value, 0); |
f73dda09 | 930 | #else /* !ARRAY_VARS */ |
495aee44 | 931 | v = bind_variable (name, value, 0); |
f73dda09 | 932 | #endif /* !ARRAY_VARS */ |
495aee44 CR |
933 | return (v == 0 ? v |
934 | : ((readonly_p (v) || noassign_p (v)) ? (SHELL_VAR *)NULL : v)); | |
ccc6cda3 JA |
935 | } |
936 | ||
3185942a JA |
937 | #if defined (HANDLE_MULTIBYTE) |
938 | static int | |
939 | read_mbchar (fd, string, ind, ch, unbuffered) | |
940 | int fd; | |
941 | char *string; | |
942 | int ind, ch, unbuffered; | |
943 | { | |
944 | char mbchar[MB_LEN_MAX + 1]; | |
945 | int i, n, r; | |
946 | char c; | |
947 | size_t ret; | |
948 | mbstate_t ps, ps_back; | |
949 | wchar_t wc; | |
950 | ||
951 | memset (&ps, '\0', sizeof (mbstate_t)); | |
952 | memset (&ps_back, '\0', sizeof (mbstate_t)); | |
953 | ||
954 | mbchar[0] = ch; | |
955 | i = 1; | |
956 | for (n = 0; n <= MB_LEN_MAX; n++) | |
957 | { | |
958 | ps_back = ps; | |
959 | ret = mbrtowc (&wc, mbchar, i, &ps); | |
960 | if (ret == (size_t)-2) | |
961 | { | |
962 | ps = ps_back; | |
ac50fbac | 963 | /* We don't want to be interrupted during a multibyte char read */ |
3185942a JA |
964 | if (unbuffered) |
965 | r = zread (fd, &c, 1); | |
966 | else | |
967 | r = zreadc (fd, &c); | |
968 | if (r < 0) | |
969 | goto mbchar_return; | |
970 | mbchar[i++] = c; | |
971 | continue; | |
972 | } | |
973 | else if (ret == (size_t)-1 || ret == (size_t)0 || ret > (size_t)0) | |
974 | break; | |
975 | } | |
976 | ||
977 | mbchar_return: | |
978 | if (i > 1) /* read a multibyte char */ | |
979 | /* mbchar[0] is already string[ind-1] */ | |
980 | for (r = 1; r < i; r++) | |
981 | string[ind+r-1] = mbchar[r]; | |
982 | return i - 1; | |
983 | } | |
984 | #endif | |
985 | ||
986 | ||
987 | static void | |
988 | ttyrestore (ttp) | |
989 | struct ttsave *ttp; | |
990 | { | |
991 | ttsetattr (ttp->fd, ttp->attrs); | |
84c617ec CR |
992 | tty_modified = 0; |
993 | } | |
994 | ||
995 | void | |
996 | read_tty_cleanup () | |
997 | { | |
998 | if (tty_modified) | |
999 | ttyrestore (&termsave); | |
1000 | } | |
1001 | ||
1002 | int | |
1003 | read_tty_modified () | |
1004 | { | |
1005 | return (tty_modified); | |
3185942a JA |
1006 | } |
1007 | ||
ccc6cda3 | 1008 | #if defined (READLINE) |
0628567a | 1009 | static rl_completion_func_t *old_attempted_completion_function = 0; |
3185942a JA |
1010 | static rl_hook_func_t *old_startup_hook; |
1011 | static char *deftext; | |
0628567a JA |
1012 | |
1013 | static void | |
1014 | reset_attempted_completion_function (cp) | |
1015 | char *cp; | |
1016 | { | |
1017 | if (rl_attempted_completion_function == 0 && old_attempted_completion_function) | |
1018 | rl_attempted_completion_function = old_attempted_completion_function; | |
1019 | } | |
7117c2d2 | 1020 | |
3185942a JA |
1021 | static int |
1022 | set_itext () | |
1023 | { | |
1024 | int r1, r2; | |
1025 | ||
1026 | r1 = r2 = 0; | |
1027 | if (old_startup_hook) | |
1028 | r1 = (*old_startup_hook) (); | |
1029 | if (deftext) | |
1030 | { | |
1031 | r2 = rl_insert_text (deftext); | |
1032 | deftext = (char *)NULL; | |
1033 | rl_startup_hook = old_startup_hook; | |
1034 | old_startup_hook = (rl_hook_func_t *)NULL; | |
1035 | } | |
1036 | return (r1 || r2); | |
1037 | } | |
1038 | ||
ccc6cda3 | 1039 | static char * |
3185942a | 1040 | edit_line (p, itext) |
ccc6cda3 | 1041 | char *p; |
3185942a | 1042 | char *itext; |
726f6388 | 1043 | { |
ccc6cda3 JA |
1044 | char *ret; |
1045 | int len; | |
1046 | ||
95732b49 | 1047 | if (bash_readline_initialized == 0) |
ccc6cda3 | 1048 | initialize_readline (); |
0628567a | 1049 | |
7117c2d2 JA |
1050 | old_attempted_completion_function = rl_attempted_completion_function; |
1051 | rl_attempted_completion_function = (rl_completion_func_t *)NULL; | |
9b86eb22 | 1052 | bashline_set_event_hook (); |
3185942a JA |
1053 | if (itext) |
1054 | { | |
1055 | old_startup_hook = rl_startup_hook; | |
1056 | rl_startup_hook = set_itext; | |
1057 | deftext = itext; | |
1058 | } | |
ac50fbac | 1059 | |
ccc6cda3 | 1060 | ret = readline (p); |
ac50fbac | 1061 | |
7117c2d2 | 1062 | rl_attempted_completion_function = old_attempted_completion_function; |
0628567a | 1063 | old_attempted_completion_function = (rl_completion_func_t *)NULL; |
9b86eb22 | 1064 | bashline_reset_event_hook (); |
0628567a | 1065 | |
ccc6cda3 JA |
1066 | if (ret == 0) |
1067 | return ret; | |
1068 | len = strlen (ret); | |
f73dda09 | 1069 | ret = (char *)xrealloc (ret, len + 2); |
bb70624e | 1070 | ret[len++] = delim; |
ccc6cda3 JA |
1071 | ret[len] = '\0'; |
1072 | return ret; | |
726f6388 | 1073 | } |
bb70624e JA |
1074 | |
1075 | static int old_delim_ctype; | |
f73dda09 | 1076 | static rl_command_func_t *old_delim_func; |
bb70624e | 1077 | static int old_newline_ctype; |
f73dda09 | 1078 | static rl_command_func_t *old_newline_func; |
bb70624e | 1079 | |
f73dda09 | 1080 | static unsigned char delim_char; |
bb70624e JA |
1081 | |
1082 | static void | |
1083 | set_eol_delim (c) | |
1084 | int c; | |
1085 | { | |
1086 | Keymap cmap; | |
1087 | ||
1088 | if (bash_readline_initialized == 0) | |
1089 | initialize_readline (); | |
1090 | cmap = rl_get_keymap (); | |
1091 | ||
1092 | /* Change newline to self-insert */ | |
1093 | old_newline_ctype = cmap[RETURN].type; | |
1094 | old_newline_func = cmap[RETURN].function; | |
1095 | cmap[RETURN].type = ISFUNC; | |
1096 | cmap[RETURN].function = rl_insert; | |
1097 | ||
1098 | /* Bind the delimiter character to accept-line. */ | |
1099 | old_delim_ctype = cmap[c].type; | |
1100 | old_delim_func = cmap[c].function; | |
1101 | cmap[c].type = ISFUNC; | |
1102 | cmap[c].function = rl_newline; | |
1103 | ||
1104 | delim_char = c; | |
1105 | } | |
1106 | ||
1107 | static void | |
f73dda09 JA |
1108 | reset_eol_delim (cp) |
1109 | char *cp; | |
bb70624e JA |
1110 | { |
1111 | Keymap cmap; | |
1112 | ||
1113 | cmap = rl_get_keymap (); | |
1114 | ||
1115 | cmap[RETURN].type = old_newline_ctype; | |
1116 | cmap[RETURN].function = old_newline_func; | |
1117 | ||
1118 | cmap[delim_char].type = old_delim_ctype; | |
1119 | cmap[delim_char].function = old_delim_func; | |
1120 | } | |
ccc6cda3 | 1121 | #endif |