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Commit | Line | Data |
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726f6388 JA |
1 | /* readline.c -- a general facility for reading lines of input |
2 | with emacs style editing and completion. */ | |
3 | ||
7571d3f4 | 4 | /* Copyright (C) 1987-2013 Free Software Foundation, Inc. |
726f6388 | 5 | |
2e4498b3 CR |
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. | |
726f6388 | 8 | |
2e4498b3 CR |
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 | |
726f6388 JA |
12 | (at your option) any later version. |
13 | ||
2e4498b3 CR |
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 | |
726f6388 JA |
17 | GNU General Public License for more details. |
18 | ||
2e4498b3 CR |
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 | ||
726f6388 JA |
23 | #define READLINE_LIBRARY |
24 | ||
ccc6cda3 JA |
25 | #if defined (HAVE_CONFIG_H) |
26 | # include <config.h> | |
27 | #endif | |
28 | ||
726f6388 | 29 | #include <sys/types.h> |
ccc6cda3 | 30 | #include "posixstat.h" |
726f6388 | 31 | #include <fcntl.h> |
ccc6cda3 | 32 | #if defined (HAVE_SYS_FILE_H) |
726f6388 | 33 | # include <sys/file.h> |
ccc6cda3 | 34 | #endif /* HAVE_SYS_FILE_H */ |
726f6388 JA |
35 | |
36 | #if defined (HAVE_UNISTD_H) | |
37 | # include <unistd.h> | |
38 | #endif /* HAVE_UNISTD_H */ | |
39 | ||
40 | #if defined (HAVE_STDLIB_H) | |
41 | # include <stdlib.h> | |
42 | #else | |
43 | # include "ansi_stdlib.h" | |
44 | #endif /* HAVE_STDLIB_H */ | |
45 | ||
ccc6cda3 JA |
46 | #if defined (HAVE_LOCALE_H) |
47 | # include <locale.h> | |
48 | #endif | |
726f6388 | 49 | |
ccc6cda3 | 50 | #include <stdio.h> |
d166f048 | 51 | #include "posixjmp.h" |
d3ad40de CR |
52 | #include <errno.h> |
53 | ||
54 | #if !defined (errno) | |
55 | extern int errno; | |
56 | #endif /* !errno */ | |
726f6388 | 57 | |
726f6388 JA |
58 | /* System-specific feature definitions and include files. */ |
59 | #include "rldefs.h" | |
7117c2d2 | 60 | #include "rlmbutil.h" |
726f6388 | 61 | |
d166f048 JA |
62 | #if defined (__EMX__) |
63 | # define INCL_DOSPROCESS | |
64 | # include <os2.h> | |
65 | #endif /* __EMX__ */ | |
726f6388 JA |
66 | |
67 | /* Some standard library routines. */ | |
68 | #include "readline.h" | |
69 | #include "history.h" | |
70 | ||
bb70624e JA |
71 | #include "rlprivate.h" |
72 | #include "rlshell.h" | |
73 | #include "xmalloc.h" | |
74 | ||
d166f048 | 75 | #ifndef RL_LIBRARY_VERSION |
19e1dd93 | 76 | # define RL_LIBRARY_VERSION "5.1" |
f73dda09 JA |
77 | #endif |
78 | ||
79 | #ifndef RL_READLINE_VERSION | |
19e1dd93 | 80 | # define RL_READLINE_VERSION 0x0501 |
d166f048 JA |
81 | #endif |
82 | ||
7117c2d2 | 83 | extern void _rl_free_history_entry PARAMS((HIST_ENTRY *)); |
ccc6cda3 | 84 | |
d76edd30 CR |
85 | #if defined (COLOR_SUPPORT) |
86 | extern void _rl_parse_colors PARAMS((void)); /* XXX */ | |
87 | #endif | |
88 | ||
89 | ||
726f6388 | 90 | /* Forward declarations used in this file. */ |
f73dda09 JA |
91 | static char *readline_internal PARAMS((void)); |
92 | static void readline_initialize_everything PARAMS((void)); | |
7117c2d2 JA |
93 | |
94 | static void bind_arrow_keys_internal PARAMS((Keymap)); | |
f73dda09 | 95 | static void bind_arrow_keys PARAMS((void)); |
726f6388 | 96 | |
f3aad56d CR |
97 | static void bind_bracketed_paste_prefix PARAMS((void)); |
98 | ||
f73dda09 | 99 | static void readline_default_bindings PARAMS((void)); |
d3a24ed2 | 100 | static void reset_default_bindings PARAMS((void)); |
726f6388 | 101 | |
19e1dd93 CR |
102 | static int _rl_subseq_result PARAMS((int, Keymap, int, int)); |
103 | static int _rl_subseq_getchar PARAMS((int)); | |
104 | ||
726f6388 JA |
105 | /* **************************************************************** */ |
106 | /* */ | |
107 | /* Line editing input utility */ | |
108 | /* */ | |
109 | /* **************************************************************** */ | |
110 | ||
28ef6c31 | 111 | const char *rl_library_version = RL_LIBRARY_VERSION; |
726f6388 | 112 | |
f73dda09 JA |
113 | int rl_readline_version = RL_READLINE_VERSION; |
114 | ||
28ef6c31 | 115 | /* True if this is `real' readline as opposed to some stub substitute. */ |
bb70624e JA |
116 | int rl_gnu_readline_p = 1; |
117 | ||
726f6388 JA |
118 | /* A pointer to the keymap that is currently in use. |
119 | By default, it is the standard emacs keymap. */ | |
120 | Keymap _rl_keymap = emacs_standard_keymap; | |
121 | ||
122 | /* The current style of editing. */ | |
123 | int rl_editing_mode = emacs_mode; | |
124 | ||
7117c2d2 JA |
125 | /* The current insert mode: input (the default) or overwrite */ |
126 | int rl_insert_mode = RL_IM_DEFAULT; | |
127 | ||
d166f048 JA |
128 | /* Non-zero if we called this function from _rl_dispatch(). It's present |
129 | so functions can find out whether they were called from a key binding | |
130 | or directly from an application. */ | |
131 | int rl_dispatching; | |
132 | ||
726f6388 | 133 | /* Non-zero if the previous command was a kill command. */ |
ccc6cda3 | 134 | int _rl_last_command_was_kill = 0; |
726f6388 JA |
135 | |
136 | /* The current value of the numeric argument specified by the user. */ | |
137 | int rl_numeric_arg = 1; | |
138 | ||
139 | /* Non-zero if an argument was typed. */ | |
140 | int rl_explicit_arg = 0; | |
141 | ||
142 | /* Temporary value used while generating the argument. */ | |
143 | int rl_arg_sign = 1; | |
144 | ||
145 | /* Non-zero means we have been called at least once before. */ | |
ccc6cda3 | 146 | static int rl_initialized; |
726f6388 | 147 | |
28ef6c31 | 148 | #if 0 |
726f6388 | 149 | /* If non-zero, this program is running in an EMACS buffer. */ |
ccc6cda3 | 150 | static int running_in_emacs; |
28ef6c31 JA |
151 | #endif |
152 | ||
153 | /* Flags word encapsulating the current readline state. */ | |
154 | int rl_readline_state = RL_STATE_NONE; | |
726f6388 JA |
155 | |
156 | /* The current offset in the current input line. */ | |
157 | int rl_point; | |
158 | ||
159 | /* Mark in the current input line. */ | |
160 | int rl_mark; | |
161 | ||
162 | /* Length of the current input line. */ | |
163 | int rl_end; | |
164 | ||
165 | /* Make this non-zero to return the current input_line. */ | |
166 | int rl_done; | |
167 | ||
168 | /* The last function executed by readline. */ | |
28ef6c31 | 169 | rl_command_func_t *rl_last_func = (rl_command_func_t *)NULL; |
726f6388 JA |
170 | |
171 | /* Top level environment for readline_internal (). */ | |
6fbe7620 | 172 | procenv_t _rl_top_level; |
726f6388 JA |
173 | |
174 | /* The streams we interact with. */ | |
ccc6cda3 | 175 | FILE *_rl_in_stream, *_rl_out_stream; |
726f6388 JA |
176 | |
177 | /* The names of the streams that we do input and output to. */ | |
178 | FILE *rl_instream = (FILE *)NULL; | |
179 | FILE *rl_outstream = (FILE *)NULL; | |
180 | ||
f73dda09 JA |
181 | /* Non-zero means echo characters as they are read. Defaults to no echo; |
182 | set to 1 if there is a controlling terminal, we can get its attributes, | |
183 | and the attributes include `echo'. Look at rltty.c:prepare_terminal_settings | |
184 | for the code that sets it. */ | |
6fbe7620 | 185 | int _rl_echoing_p = 0; |
726f6388 JA |
186 | |
187 | /* Current prompt. */ | |
28ef6c31 | 188 | char *rl_prompt = (char *)NULL; |
726f6388 JA |
189 | int rl_visible_prompt_length = 0; |
190 | ||
bb70624e JA |
191 | /* Set to non-zero by calling application if it has already printed rl_prompt |
192 | and does not want readline to do it the first time. */ | |
193 | int rl_already_prompted = 0; | |
194 | ||
726f6388 JA |
195 | /* The number of characters read in order to type this complete command. */ |
196 | int rl_key_sequence_length = 0; | |
197 | ||
198 | /* If non-zero, then this is the address of a function to call just | |
b72432fd | 199 | before readline_internal_setup () prints the first prompt. */ |
28ef6c31 | 200 | rl_hook_func_t *rl_startup_hook = (rl_hook_func_t *)NULL; |
726f6388 | 201 | |
b72432fd JA |
202 | /* If non-zero, this is the address of a function to call just before |
203 | readline_internal_setup () returns and readline_internal starts | |
204 | reading input characters. */ | |
28ef6c31 | 205 | rl_hook_func_t *rl_pre_input_hook = (rl_hook_func_t *)NULL; |
b72432fd | 206 | |
726f6388 JA |
207 | /* What we use internally. You should always refer to RL_LINE_BUFFER. */ |
208 | static char *the_line; | |
209 | ||
210 | /* The character that can generate an EOF. Really read from | |
211 | the terminal driver... just defaulted here. */ | |
212 | int _rl_eof_char = CTRL ('D'); | |
213 | ||
214 | /* Non-zero makes this the next keystroke to read. */ | |
215 | int rl_pending_input = 0; | |
216 | ||
217 | /* Pointer to a useful terminal name. */ | |
28ef6c31 | 218 | const char *rl_terminal_name = (const char *)NULL; |
726f6388 JA |
219 | |
220 | /* Non-zero means to always use horizontal scrolling in line display. */ | |
221 | int _rl_horizontal_scroll_mode = 0; | |
222 | ||
223 | /* Non-zero means to display an asterisk at the starts of history lines | |
224 | which have been modified. */ | |
225 | int _rl_mark_modified_lines = 0; | |
226 | ||
227 | /* The style of `bell' notification preferred. This can be set to NO_BELL, | |
228 | AUDIBLE_BELL, or VISIBLE_BELL. */ | |
229 | int _rl_bell_preference = AUDIBLE_BELL; | |
230 | ||
ccc6cda3 JA |
231 | /* String inserted into the line by rl_insert_comment (). */ |
232 | char *_rl_comment_begin; | |
233 | ||
234 | /* Keymap holding the function currently being executed. */ | |
235 | Keymap rl_executing_keymap; | |
236 | ||
19e1dd93 CR |
237 | /* Keymap we're currently using to dispatch. */ |
238 | Keymap _rl_dispatching_keymap; | |
239 | ||
b72432fd JA |
240 | /* Non-zero means to erase entire line, including prompt, on empty input lines. */ |
241 | int rl_erase_empty_line = 0; | |
242 | ||
bb70624e JA |
243 | /* Non-zero means to read only this many characters rather than up to a |
244 | character bound to accept-line. */ | |
245 | int rl_num_chars_to_read; | |
246 | ||
39feef01 | 247 | /* Line buffer and maintenance. */ |
726f6388 JA |
248 | char *rl_line_buffer = (char *)NULL; |
249 | int rl_line_buffer_len = 0; | |
726f6388 | 250 | |
19e1dd93 CR |
251 | /* Key sequence `contexts' */ |
252 | _rl_keyseq_cxt *_rl_kscxt = 0; | |
253 | ||
2dead0c4 CR |
254 | int rl_executing_key; |
255 | char *rl_executing_keyseq = 0; | |
256 | int _rl_executing_keyseq_size = 0; | |
257 | ||
abe2eb5b CR |
258 | /* Timeout (specified in milliseconds) when reading characters making up an |
259 | ambiguous multiple-key sequence */ | |
260 | int _rl_keyseq_timeout = 500; | |
261 | ||
2dead0c4 CR |
262 | #define RESIZE_KEYSEQ_BUFFER() \ |
263 | do \ | |
264 | { \ | |
265 | if (rl_key_sequence_length + 2 >= _rl_executing_keyseq_size) \ | |
266 | { \ | |
267 | _rl_executing_keyseq_size += 16; \ | |
268 | rl_executing_keyseq = xrealloc (rl_executing_keyseq, _rl_executing_keyseq_size); \ | |
269 | } \ | |
270 | } \ | |
271 | while (0); | |
272 | ||
f73dda09 | 273 | /* Forward declarations used by the display, termcap, and history code. */ |
726f6388 | 274 | |
726f6388 JA |
275 | /* **************************************************************** */ |
276 | /* */ | |
277 | /* `Forward' declarations */ | |
278 | /* */ | |
279 | /* **************************************************************** */ | |
280 | ||
281 | /* Non-zero means do not parse any lines other than comments and | |
282 | parser directives. */ | |
283 | unsigned char _rl_parsing_conditionalized_out = 0; | |
284 | ||
726f6388 JA |
285 | /* Non-zero means to convert characters with the meta bit set to |
286 | escape-prefixed characters so we can indirect through | |
287 | emacs_meta_keymap or vi_escape_keymap. */ | |
288 | int _rl_convert_meta_chars_to_ascii = 1; | |
289 | ||
290 | /* Non-zero means to output characters with the meta bit set directly | |
291 | rather than as a meta-prefixed escape sequence. */ | |
292 | int _rl_output_meta_chars = 0; | |
293 | ||
453f278a CR |
294 | /* Non-zero means to look at the termios special characters and bind |
295 | them to equivalent readline functions at startup. */ | |
296 | int _rl_bind_stty_chars = 1; | |
297 | ||
d3ad40de CR |
298 | /* Non-zero means to go through the history list at every newline (or |
299 | whenever rl_done is set and readline returns) and revert each line to | |
300 | its initial state. */ | |
301 | int _rl_revert_all_at_newline = 0; | |
302 | ||
824dfe68 CR |
303 | /* Non-zero means to honor the termios ECHOCTL bit and echo control |
304 | characters corresponding to keyboard-generated signals. */ | |
305 | int _rl_echo_control_chars = 1; | |
306 | ||
a7ad477f CR |
307 | /* Non-zero means to prefix the displayed prompt with a character indicating |
308 | the editing mode: @ for emacs, : for vi-command, + for vi-insert. */ | |
309 | int _rl_show_mode_in_prompt = 0; | |
310 | ||
f3aad56d CR |
311 | /* Non-zero means to attempt to put the terminal in `bracketed paste mode', |
312 | where it will prefix pasted text with an escape sequence and send | |
313 | another to mark the end of the paste. */ | |
314 | int _rl_enable_bracketed_paste = 0; | |
315 | ||
726f6388 JA |
316 | /* **************************************************************** */ |
317 | /* */ | |
318 | /* Top Level Functions */ | |
319 | /* */ | |
320 | /* **************************************************************** */ | |
321 | ||
322 | /* Non-zero means treat 0200 bit in terminal input as Meta bit. */ | |
323 | int _rl_meta_flag = 0; /* Forward declaration */ | |
324 | ||
28ef6c31 JA |
325 | /* Set up the prompt and expand it. Called from readline() and |
326 | rl_callback_handler_install (). */ | |
327 | int | |
328 | rl_set_prompt (prompt) | |
329 | const char *prompt; | |
330 | { | |
331 | FREE (rl_prompt); | |
332 | rl_prompt = prompt ? savestring (prompt) : (char *)NULL; | |
0cc62c12 | 333 | rl_display_prompt = rl_prompt ? rl_prompt : ""; |
28ef6c31 | 334 | |
f73dda09 | 335 | rl_visible_prompt_length = rl_expand_prompt (rl_prompt); |
28ef6c31 JA |
336 | return 0; |
337 | } | |
338 | ||
ccc6cda3 | 339 | /* Read a line of input. Prompt with PROMPT. An empty PROMPT means |
726f6388 JA |
340 | none. A return value of NULL means that EOF was encountered. */ |
341 | char * | |
342 | readline (prompt) | |
28ef6c31 | 343 | const char *prompt; |
726f6388 JA |
344 | { |
345 | char *value; | |
d356441f | 346 | #if 0 |
d3ad40de | 347 | int in_callback; |
d356441f | 348 | #endif |
726f6388 | 349 | |
726f6388 JA |
350 | /* If we are at EOF return a NULL string. */ |
351 | if (rl_pending_input == EOF) | |
352 | { | |
28ef6c31 | 353 | rl_clear_pending_input (); |
726f6388 JA |
354 | return ((char *)NULL); |
355 | } | |
356 | ||
d3ad40de CR |
357 | #if 0 |
358 | /* If readline() is called after installing a callback handler, temporarily | |
359 | turn off the callback state to avoid ensuing messiness. Patch supplied | |
360 | by the gdb folks. XXX -- disabled. This can be fooled and readline | |
361 | left in a strange state by a poorly-timed longjmp. */ | |
362 | if (in_callback = RL_ISSTATE (RL_STATE_CALLBACK)) | |
363 | RL_UNSETSTATE (RL_STATE_CALLBACK); | |
364 | #endif | |
365 | ||
28ef6c31 | 366 | rl_set_prompt (prompt); |
726f6388 JA |
367 | |
368 | rl_initialize (); | |
233564d2 CR |
369 | if (rl_prep_term_function) |
370 | (*rl_prep_term_function) (_rl_meta_flag); | |
726f6388 JA |
371 | |
372 | #if defined (HANDLE_SIGNALS) | |
373 | rl_set_signals (); | |
374 | #endif | |
375 | ||
376 | value = readline_internal (); | |
233564d2 CR |
377 | if (rl_deprep_term_function) |
378 | (*rl_deprep_term_function) (); | |
726f6388 JA |
379 | |
380 | #if defined (HANDLE_SIGNALS) | |
381 | rl_clear_signals (); | |
382 | #endif | |
383 | ||
d3ad40de CR |
384 | #if 0 |
385 | if (in_callback) | |
386 | RL_SETSTATE (RL_STATE_CALLBACK); | |
387 | #endif | |
388 | ||
a0350e08 CR |
389 | #if HAVE_DECL_AUDIT_TTY && defined (ENABLE_TTY_AUDIT_SUPPORT) |
390 | if (value) | |
391 | _rl_audit_tty (value); | |
392 | #endif | |
393 | ||
726f6388 JA |
394 | return (value); |
395 | } | |
396 | ||
ccc6cda3 JA |
397 | #if defined (READLINE_CALLBACKS) |
398 | # define STATIC_CALLBACK | |
399 | #else | |
400 | # define STATIC_CALLBACK static | |
401 | #endif | |
726f6388 | 402 | |
ccc6cda3 JA |
403 | STATIC_CALLBACK void |
404 | readline_internal_setup () | |
405 | { | |
bb70624e JA |
406 | char *nprompt; |
407 | ||
ccc6cda3 JA |
408 | _rl_in_stream = rl_instream; |
409 | _rl_out_stream = rl_outstream; | |
726f6388 | 410 | |
f4f5e1c2 | 411 | /* Enable the meta key only for the duration of readline(), if this |
c111d992 CR |
412 | terminal has one and the terminal has been initialized */ |
413 | if (_rl_enable_meta & RL_ISSTATE (RL_STATE_TERMPREPPED)) | |
f4f5e1c2 CR |
414 | _rl_enable_meta_key (); |
415 | ||
726f6388 JA |
416 | if (rl_startup_hook) |
417 | (*rl_startup_hook) (); | |
418 | ||
a7ad477f CR |
419 | #if defined (VI_MODE) |
420 | if (rl_editing_mode == vi_mode) | |
a37d979e | 421 | rl_vi_insertion_mode (1, 'i'); /* don't want to reset last */ |
a7ad477f CR |
422 | #endif /* VI_MODE */ |
423 | ||
7117c2d2 JA |
424 | /* If we're not echoing, we still want to at least print a prompt, because |
425 | rl_redisplay will not do it for us. If the calling application has a | |
426 | custom redisplay function, though, let that function handle it. */ | |
6fbe7620 | 427 | if (_rl_echoing_p == 0 && rl_redisplay_function == rl_redisplay) |
726f6388 | 428 | { |
bb70624e | 429 | if (rl_prompt && rl_already_prompted == 0) |
726f6388 | 430 | { |
bb70624e JA |
431 | nprompt = _rl_strip_prompt (rl_prompt); |
432 | fprintf (_rl_out_stream, "%s", nprompt); | |
ccc6cda3 | 433 | fflush (_rl_out_stream); |
9ec5ed66 | 434 | xfree (nprompt); |
726f6388 JA |
435 | } |
436 | } | |
437 | else | |
438 | { | |
bb70624e JA |
439 | if (rl_prompt && rl_already_prompted) |
440 | rl_on_new_line_with_prompt (); | |
441 | else | |
442 | rl_on_new_line (); | |
ccc6cda3 | 443 | (*rl_redisplay_function) (); |
7117c2d2 JA |
444 | } |
445 | ||
b72432fd JA |
446 | if (rl_pre_input_hook) |
447 | (*rl_pre_input_hook) (); | |
a927e029 CR |
448 | |
449 | RL_CHECK_SIGNALS (); | |
ccc6cda3 JA |
450 | } |
451 | ||
452 | STATIC_CALLBACK char * | |
453 | readline_internal_teardown (eof) | |
454 | int eof; | |
455 | { | |
456 | char *temp; | |
457 | HIST_ENTRY *entry; | |
458 | ||
a927e029 CR |
459 | RL_CHECK_SIGNALS (); |
460 | ||
ccc6cda3 JA |
461 | /* Restore the original of this history line, iff the line that we |
462 | are editing was originally in the history, AND the line has changed. */ | |
463 | entry = current_history (); | |
464 | ||
465 | if (entry && rl_undo_list) | |
466 | { | |
467 | temp = savestring (the_line); | |
468 | rl_revert_line (1, 0); | |
b72432fd | 469 | entry = replace_history_entry (where_history (), the_line, (histdata_t)NULL); |
ccc6cda3 JA |
470 | _rl_free_history_entry (entry); |
471 | ||
472 | strcpy (the_line, temp); | |
9ec5ed66 | 473 | xfree (temp); |
ccc6cda3 JA |
474 | } |
475 | ||
d3ad40de CR |
476 | if (_rl_revert_all_at_newline) |
477 | _rl_revert_all_lines (); | |
478 | ||
ccc6cda3 JA |
479 | /* At any rate, it is highly likely that this line has an undo list. Get |
480 | rid of it now. */ | |
481 | if (rl_undo_list) | |
28ef6c31 | 482 | rl_free_undo_list (); |
ccc6cda3 | 483 | |
c111d992 CR |
484 | /* Disable the meta key, if this terminal has one and we were told to use it. |
485 | The check whether or not we sent the enable string is in | |
486 | _rl_disable_meta_key(); the flag is set in _rl_enable_meta_key */ | |
f4f5e1c2 CR |
487 | _rl_disable_meta_key (); |
488 | ||
7117c2d2 JA |
489 | /* Restore normal cursor, if available. */ |
490 | _rl_set_insert_mode (RL_IM_INSERT, 0); | |
491 | ||
ccc6cda3 JA |
492 | return (eof ? (char *)NULL : savestring (the_line)); |
493 | } | |
726f6388 | 494 | |
19e1dd93 CR |
495 | void |
496 | _rl_internal_char_cleanup () | |
497 | { | |
498 | #if defined (VI_MODE) | |
499 | /* In vi mode, when you exit insert mode, the cursor moves back | |
500 | over the previous character. We explicitly check for that here. */ | |
501 | if (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap) | |
502 | rl_vi_check (); | |
503 | #endif /* VI_MODE */ | |
504 | ||
505 | if (rl_num_chars_to_read && rl_end >= rl_num_chars_to_read) | |
506 | { | |
507 | (*rl_redisplay_function) (); | |
508 | _rl_want_redisplay = 0; | |
509 | rl_newline (1, '\n'); | |
510 | } | |
511 | ||
512 | if (rl_done == 0) | |
513 | { | |
514 | (*rl_redisplay_function) (); | |
515 | _rl_want_redisplay = 0; | |
516 | } | |
517 | ||
518 | /* If the application writer has told us to erase the entire line if | |
519 | the only character typed was something bound to rl_newline, do so. */ | |
520 | if (rl_erase_empty_line && rl_done && rl_last_func == rl_newline && | |
521 | rl_point == 0 && rl_end == 0) | |
522 | _rl_erase_entire_line (); | |
523 | } | |
524 | ||
ccc6cda3 JA |
525 | STATIC_CALLBACK int |
526 | #if defined (READLINE_CALLBACKS) | |
527 | readline_internal_char () | |
528 | #else | |
529 | readline_internal_charloop () | |
530 | #endif | |
531 | { | |
532 | static int lastc, eof_found; | |
533 | int c, code, lk; | |
534 | ||
5e37553a | 535 | lastc = EOF; |
ccc6cda3 JA |
536 | |
537 | #if !defined (READLINE_CALLBACKS) | |
c4c90ef8 | 538 | eof_found = 0; |
ccc6cda3 | 539 | while (rl_done == 0) |
726f6388 | 540 | { |
ccc6cda3 JA |
541 | #endif |
542 | lk = _rl_last_command_was_kill; | |
726f6388 | 543 | |
49cf7828 CR |
544 | #if defined (HAVE_POSIX_SIGSETJMP) |
545 | code = sigsetjmp (_rl_top_level, 0); | |
546 | #else | |
6fbe7620 | 547 | code = setjmp (_rl_top_level); |
49cf7828 | 548 | #endif |
726f6388 JA |
549 | |
550 | if (code) | |
19e1dd93 CR |
551 | { |
552 | (*rl_redisplay_function) (); | |
553 | _rl_want_redisplay = 0; | |
554 | /* If we get here, we're not being called from something dispatched | |
555 | from _rl_callback_read_char(), which sets up its own value of | |
6fbe7620 | 556 | _rl_top_level (saving and restoring the old, of course), so |
19e1dd93 CR |
557 | we can just return here. */ |
558 | if (RL_ISSTATE (RL_STATE_CALLBACK)) | |
559 | return (0); | |
560 | } | |
726f6388 | 561 | |
ccc6cda3 | 562 | if (rl_pending_input == 0) |
726f6388 JA |
563 | { |
564 | /* Then initialize the argument and number of keys read. */ | |
798a67db | 565 | _rl_reset_argument (); |
726f6388 | 566 | rl_key_sequence_length = 0; |
2dead0c4 | 567 | rl_executing_keyseq[0] = 0; |
726f6388 JA |
568 | } |
569 | ||
28ef6c31 | 570 | RL_SETSTATE(RL_STATE_READCMD); |
726f6388 | 571 | c = rl_read_key (); |
28ef6c31 | 572 | RL_UNSETSTATE(RL_STATE_READCMD); |
726f6388 | 573 | |
d3ad40de CR |
574 | /* look at input.c:rl_getc() for the circumstances under which this will |
575 | be returned; punt immediately on read error without converting it to | |
83509ab7 CR |
576 | a newline; assume that rl_read_key has already called the signal |
577 | handler. */ | |
d3ad40de CR |
578 | if (c == READERR) |
579 | { | |
580 | #if defined (READLINE_CALLBACKS) | |
581 | RL_SETSTATE(RL_STATE_DONE); | |
582 | return (rl_done = 1); | |
583 | #else | |
584 | eof_found = 1; | |
585 | break; | |
586 | #endif | |
587 | } | |
588 | ||
5e37553a CR |
589 | /* EOF typed to a non-blank line is ^D the first time, EOF the second |
590 | time in a row. This won't return any partial line read from the tty. | |
591 | If we want to change this, to force any existing line to be returned | |
592 | when read(2) reads EOF, for example, this is the place to change. */ | |
726f6388 | 593 | if (c == EOF && rl_end) |
5e37553a CR |
594 | { |
595 | if (RL_SIG_RECEIVED ()) | |
596 | { | |
597 | RL_CHECK_SIGNALS (); | |
598 | if (rl_signal_event_hook) | |
599 | (*rl_signal_event_hook) (); /* XXX */ | |
600 | } | |
601 | ||
602 | /* XXX - reading two consecutive EOFs returns EOF */ | |
603 | if (RL_ISSTATE (RL_STATE_TERMPREPPED)) | |
604 | { | |
605 | if (lastc == _rl_eof_char || lastc == EOF) | |
606 | rl_end = 0; | |
607 | else | |
608 | c = _rl_eof_char; | |
609 | } | |
610 | else | |
611 | c = NEWLINE; | |
612 | } | |
726f6388 JA |
613 | |
614 | /* The character _rl_eof_char typed to blank line, and not as the | |
5e37553a CR |
615 | previous character is interpreted as EOF. This doesn't work when |
616 | READLINE_CALLBACKS is defined, so hitting a series of ^Ds will | |
617 | erase all the chars on the line and then return EOF. */ | |
618 | if (((c == _rl_eof_char && lastc != c) || c == EOF) && rl_end == 0) | |
726f6388 | 619 | { |
ccc6cda3 | 620 | #if defined (READLINE_CALLBACKS) |
28ef6c31 | 621 | RL_SETSTATE(RL_STATE_DONE); |
ccc6cda3 JA |
622 | return (rl_done = 1); |
623 | #else | |
726f6388 JA |
624 | eof_found = 1; |
625 | break; | |
ccc6cda3 | 626 | #endif |
726f6388 JA |
627 | } |
628 | ||
629 | lastc = c; | |
bb70624e | 630 | _rl_dispatch ((unsigned char)c, _rl_keymap); |
a927e029 | 631 | RL_CHECK_SIGNALS (); |
726f6388 | 632 | |
ccc6cda3 | 633 | /* If there was no change in _rl_last_command_was_kill, then no kill |
726f6388 JA |
634 | has taken place. Note that if input is pending we are reading |
635 | a prefix command, so nothing has changed yet. */ | |
ccc6cda3 JA |
636 | if (rl_pending_input == 0 && lk == _rl_last_command_was_kill) |
637 | _rl_last_command_was_kill = 0; | |
726f6388 | 638 | |
19e1dd93 | 639 | _rl_internal_char_cleanup (); |
b72432fd | 640 | |
ccc6cda3 JA |
641 | #if defined (READLINE_CALLBACKS) |
642 | return 0; | |
643 | #else | |
726f6388 | 644 | } |
726f6388 | 645 | |
ccc6cda3 JA |
646 | return (eof_found); |
647 | #endif | |
726f6388 JA |
648 | } |
649 | ||
ccc6cda3 JA |
650 | #if defined (READLINE_CALLBACKS) |
651 | static int | |
652 | readline_internal_charloop () | |
726f6388 | 653 | { |
b72432fd | 654 | int eof = 1; |
726f6388 | 655 | |
ccc6cda3 JA |
656 | while (rl_done == 0) |
657 | eof = readline_internal_char (); | |
658 | return (eof); | |
726f6388 | 659 | } |
ccc6cda3 | 660 | #endif /* READLINE_CALLBACKS */ |
726f6388 | 661 | |
ccc6cda3 JA |
662 | /* Read a line of input from the global rl_instream, doing output on |
663 | the global rl_outstream. | |
664 | If rl_prompt is non-null, then that is our prompt. */ | |
665 | static char * | |
666 | readline_internal () | |
726f6388 | 667 | { |
ccc6cda3 | 668 | int eof; |
726f6388 | 669 | |
ccc6cda3 JA |
670 | readline_internal_setup (); |
671 | eof = readline_internal_charloop (); | |
672 | return (readline_internal_teardown (eof)); | |
726f6388 JA |
673 | } |
674 | ||
d166f048 JA |
675 | void |
676 | _rl_init_line_state () | |
677 | { | |
7117c2d2 | 678 | rl_point = rl_end = rl_mark = 0; |
d166f048 JA |
679 | the_line = rl_line_buffer; |
680 | the_line[0] = 0; | |
681 | } | |
682 | ||
ccc6cda3 JA |
683 | void |
684 | _rl_set_the_line () | |
726f6388 | 685 | { |
ccc6cda3 | 686 | the_line = rl_line_buffer; |
726f6388 JA |
687 | } |
688 | ||
19e1dd93 CR |
689 | #if defined (READLINE_CALLBACKS) |
690 | _rl_keyseq_cxt * | |
691 | _rl_keyseq_cxt_alloc () | |
692 | { | |
693 | _rl_keyseq_cxt *cxt; | |
694 | ||
695 | cxt = (_rl_keyseq_cxt *)xmalloc (sizeof (_rl_keyseq_cxt)); | |
696 | ||
697 | cxt->flags = cxt->subseq_arg = cxt->subseq_retval = 0; | |
698 | ||
699 | cxt->okey = 0; | |
700 | cxt->ocxt = _rl_kscxt; | |
701 | cxt->childval = 42; /* sentinel value */ | |
702 | ||
703 | return cxt; | |
704 | } | |
705 | ||
706 | void | |
707 | _rl_keyseq_cxt_dispose (cxt) | |
708 | _rl_keyseq_cxt *cxt; | |
709 | { | |
9ec5ed66 | 710 | xfree (cxt); |
19e1dd93 CR |
711 | } |
712 | ||
713 | void | |
714 | _rl_keyseq_chain_dispose () | |
715 | { | |
716 | _rl_keyseq_cxt *cxt; | |
717 | ||
718 | while (_rl_kscxt) | |
719 | { | |
720 | cxt = _rl_kscxt; | |
721 | _rl_kscxt = _rl_kscxt->ocxt; | |
722 | _rl_keyseq_cxt_dispose (cxt); | |
723 | } | |
724 | } | |
725 | #endif | |
726 | ||
727 | static int | |
728 | _rl_subseq_getchar (key) | |
729 | int key; | |
730 | { | |
731 | int k; | |
732 | ||
733 | if (key == ESC) | |
734 | RL_SETSTATE(RL_STATE_METANEXT); | |
735 | RL_SETSTATE(RL_STATE_MOREINPUT); | |
736 | k = rl_read_key (); | |
737 | RL_UNSETSTATE(RL_STATE_MOREINPUT); | |
738 | if (key == ESC) | |
739 | RL_UNSETSTATE(RL_STATE_METANEXT); | |
740 | ||
741 | return k; | |
742 | } | |
743 | ||
744 | #if defined (READLINE_CALLBACKS) | |
745 | int | |
746 | _rl_dispatch_callback (cxt) | |
747 | _rl_keyseq_cxt *cxt; | |
748 | { | |
749 | int nkey, r; | |
750 | ||
751 | /* For now */ | |
19e1dd93 CR |
752 | /* The first time this context is used, we want to read input and dispatch |
753 | on it. When traversing the chain of contexts back `up', we want to use | |
754 | the value from the next context down. We're simulating recursion using | |
755 | a chain of contexts. */ | |
756 | if ((cxt->flags & KSEQ_DISPATCHED) == 0) | |
757 | { | |
758 | nkey = _rl_subseq_getchar (cxt->okey); | |
d3ad40de CR |
759 | if (nkey < 0) |
760 | { | |
761 | _rl_abort_internal (); | |
762 | return -1; | |
763 | } | |
19e1dd93 CR |
764 | r = _rl_dispatch_subseq (nkey, cxt->dmap, cxt->subseq_arg); |
765 | cxt->flags |= KSEQ_DISPATCHED; | |
766 | } | |
767 | else | |
768 | r = cxt->childval; | |
19e1dd93 CR |
769 | |
770 | /* For now */ | |
3eb2d94a CR |
771 | if (r != -3) /* don't do this if we indicate there will be other matches */ |
772 | r = _rl_subseq_result (r, cxt->oldmap, cxt->okey, (cxt->flags & KSEQ_SUBSEQ)); | |
19e1dd93 | 773 | |
a927e029 | 774 | RL_CHECK_SIGNALS (); |
939d190e CR |
775 | /* We only treat values < 0 specially to simulate recursion. */ |
776 | if (r >= 0 || (r == -1 && (cxt->flags & KSEQ_SUBSEQ) == 0)) /* success! or failure! */ | |
19e1dd93 CR |
777 | { |
778 | _rl_keyseq_chain_dispose (); | |
779 | RL_UNSETSTATE (RL_STATE_MULTIKEY); | |
780 | return r; | |
781 | } | |
782 | ||
783 | if (r != -3) /* magic value that says we added to the chain */ | |
784 | _rl_kscxt = cxt->ocxt; | |
785 | if (_rl_kscxt) | |
786 | _rl_kscxt->childval = r; | |
787 | if (r != -3) | |
788 | _rl_keyseq_cxt_dispose (cxt); | |
789 | ||
790 | return r; | |
791 | } | |
792 | #endif /* READLINE_CALLBACKS */ | |
793 | ||
726f6388 JA |
794 | /* Do the command associated with KEY in MAP. |
795 | If the associated command is really a keymap, then read | |
796 | another key, and dispatch into that map. */ | |
797 | int | |
798 | _rl_dispatch (key, map) | |
799 | register int key; | |
800 | Keymap map; | |
7117c2d2 | 801 | { |
19e1dd93 | 802 | _rl_dispatching_keymap = map; |
7117c2d2 JA |
803 | return _rl_dispatch_subseq (key, map, 0); |
804 | } | |
805 | ||
806 | int | |
807 | _rl_dispatch_subseq (key, map, got_subseq) | |
808 | register int key; | |
809 | Keymap map; | |
810 | int got_subseq; | |
726f6388 | 811 | { |
ccc6cda3 JA |
812 | int r, newkey; |
813 | char *macro; | |
28ef6c31 | 814 | rl_command_func_t *func; |
19e1dd93 CR |
815 | #if defined (READLINE_CALLBACKS) |
816 | _rl_keyseq_cxt *cxt; | |
817 | #endif | |
726f6388 JA |
818 | |
819 | if (META_CHAR (key) && _rl_convert_meta_chars_to_ascii) | |
820 | { | |
821 | if (map[ESC].type == ISKMAP) | |
822 | { | |
7117c2d2 | 823 | if (RL_ISSTATE (RL_STATE_MACRODEF)) |
ccc6cda3 | 824 | _rl_add_macro_char (ESC); |
2dead0c4 CR |
825 | RESIZE_KEYSEQ_BUFFER (); |
826 | rl_executing_keyseq[rl_key_sequence_length++] = ESC; | |
726f6388 JA |
827 | map = FUNCTION_TO_KEYMAP (map, ESC); |
828 | key = UNMETA (key); | |
726f6388 JA |
829 | return (_rl_dispatch (key, map)); |
830 | } | |
831 | else | |
28ef6c31 | 832 | rl_ding (); |
726f6388 JA |
833 | return 0; |
834 | } | |
835 | ||
7117c2d2 | 836 | if (RL_ISSTATE (RL_STATE_MACRODEF)) |
ccc6cda3 | 837 | _rl_add_macro_char (key); |
726f6388 | 838 | |
ccc6cda3 | 839 | r = 0; |
726f6388 JA |
840 | switch (map[key].type) |
841 | { | |
842 | case ISFUNC: | |
ccc6cda3 | 843 | func = map[key].function; |
28ef6c31 | 844 | if (func) |
ccc6cda3 JA |
845 | { |
846 | /* Special case rl_do_lowercase_version (). */ | |
847 | if (func == rl_do_lowercase_version) | |
c7e43312 | 848 | /* Should we do anything special if key == ANYOTHERKEY? */ |
ccc6cda3 JA |
849 | return (_rl_dispatch (_rl_to_lower (key), map)); |
850 | ||
851 | rl_executing_keymap = map; | |
2dead0c4 CR |
852 | rl_executing_key = key; |
853 | ||
854 | RESIZE_KEYSEQ_BUFFER(); | |
855 | rl_executing_keyseq[rl_key_sequence_length++] = key; | |
856 | rl_executing_keyseq[rl_key_sequence_length] = '\0'; | |
ccc6cda3 | 857 | |
d166f048 | 858 | rl_dispatching = 1; |
28ef6c31 | 859 | RL_SETSTATE(RL_STATE_DISPATCHING); |
21af69d5 | 860 | r = (*func) (rl_numeric_arg * rl_arg_sign, key); |
28ef6c31 | 861 | RL_UNSETSTATE(RL_STATE_DISPATCHING); |
d166f048 | 862 | rl_dispatching = 0; |
ccc6cda3 JA |
863 | |
864 | /* If we have input pending, then the last command was a prefix | |
865 | command. Don't change the state of rl_last_func. Otherwise, | |
866 | remember the last command executed in this variable. */ | |
28ef6c31 | 867 | if (rl_pending_input == 0 && map[key].function != rl_digit_argument) |
ccc6cda3 | 868 | rl_last_func = map[key].function; |
a927e029 CR |
869 | |
870 | RL_CHECK_SIGNALS (); | |
ccc6cda3 | 871 | } |
7117c2d2 JA |
872 | else if (map[ANYOTHERKEY].function) |
873 | { | |
874 | /* OK, there's no function bound in this map, but there is a | |
875 | shadow function that was overridden when the current keymap | |
876 | was created. Return -2 to note that. */ | |
9711fdc5 CR |
877 | if (RL_ISSTATE (RL_STATE_MACROINPUT)) |
878 | _rl_prev_macro_key (); | |
879 | else | |
880 | _rl_unget_char (key); | |
7117c2d2 JA |
881 | return -2; |
882 | } | |
883 | else if (got_subseq) | |
884 | { | |
885 | /* Return -1 to note that we're in a subsequence, but we don't | |
886 | have a matching key, nor was one overridden. This means | |
887 | we need to back up the recursion chain and find the last | |
888 | subsequence that is bound to a function. */ | |
9711fdc5 CR |
889 | if (RL_ISSTATE (RL_STATE_MACROINPUT)) |
890 | _rl_prev_macro_key (); | |
891 | else | |
892 | _rl_unget_char (key); | |
7117c2d2 JA |
893 | return -1; |
894 | } | |
ccc6cda3 JA |
895 | else |
896 | { | |
19e1dd93 CR |
897 | #if defined (READLINE_CALLBACKS) |
898 | RL_UNSETSTATE (RL_STATE_MULTIKEY); | |
899 | _rl_keyseq_chain_dispose (); | |
900 | #endif | |
ccc6cda3 JA |
901 | _rl_abort_internal (); |
902 | return -1; | |
903 | } | |
726f6388 JA |
904 | break; |
905 | ||
906 | case ISKMAP: | |
28ef6c31 | 907 | if (map[key].function != 0) |
726f6388 | 908 | { |
7117c2d2 JA |
909 | #if defined (VI_MODE) |
910 | /* The only way this test will be true is if a subsequence has been | |
911 | bound starting with ESC, generally the arrow keys. What we do is | |
912 | check whether there's input in the queue, which there generally | |
913 | will be if an arrow key has been pressed, and, if there's not, | |
914 | just dispatch to (what we assume is) rl_vi_movement_mode right | |
ed3f3b6c CR |
915 | away. This is essentially an input test with a zero timeout (by |
916 | default) or a timeout determined by the value of `keyseq-timeout' */ | |
917 | /* _rl_keyseq_timeout specified in milliseconds; _rl_input_queued | |
918 | takes microseconds, so multiply by 1000 */ | |
7117c2d2 | 919 | if (rl_editing_mode == vi_mode && key == ESC && map == vi_insertion_keymap |
ed3f3b6c | 920 | && _rl_input_queued ((_rl_keyseq_timeout > 0) ? _rl_keyseq_timeout*1000 : 0) == 0) |
7117c2d2 JA |
921 | return (_rl_dispatch (ANYOTHERKEY, FUNCTION_TO_KEYMAP (map, key))); |
922 | #endif | |
923 | ||
2dead0c4 CR |
924 | RESIZE_KEYSEQ_BUFFER (); |
925 | rl_executing_keyseq[rl_key_sequence_length++] = key; | |
19e1dd93 | 926 | _rl_dispatching_keymap = FUNCTION_TO_KEYMAP (map, key); |
28ef6c31 | 927 | |
19e1dd93 CR |
928 | /* Allocate new context here. Use linked contexts (linked through |
929 | cxt->ocxt) to simulate recursion */ | |
930 | #if defined (READLINE_CALLBACKS) | |
931 | if (RL_ISSTATE (RL_STATE_CALLBACK)) | |
932 | { | |
933 | /* Return 0 only the first time, to indicate success to | |
934 | _rl_callback_read_char. The rest of the time, we're called | |
3eb2d94a | 935 | from _rl_dispatch_callback, so we return -3 to indicate |
19e1dd93 CR |
936 | special handling is necessary. */ |
937 | r = RL_ISSTATE (RL_STATE_MULTIKEY) ? -3 : 0; | |
938 | cxt = _rl_keyseq_cxt_alloc (); | |
939 | ||
940 | if (got_subseq) | |
941 | cxt->flags |= KSEQ_SUBSEQ; | |
942 | cxt->okey = key; | |
943 | cxt->oldmap = map; | |
944 | cxt->dmap = _rl_dispatching_keymap; | |
945 | cxt->subseq_arg = got_subseq || cxt->dmap[ANYOTHERKEY].function; | |
946 | ||
947 | RL_SETSTATE (RL_STATE_MULTIKEY); | |
948 | _rl_kscxt = cxt; | |
949 | ||
950 | return r; /* don't indicate immediate success */ | |
951 | } | |
952 | #endif | |
28ef6c31 | 953 | |
a0350e08 CR |
954 | /* Tentative inter-character timeout for potential multi-key |
955 | sequences? If no input within timeout, abort sequence and | |
956 | act as if we got non-matching input. */ | |
abe2eb5b CR |
957 | /* _rl_keyseq_timeout specified in milliseconds; _rl_input_queued |
958 | takes microseconds, so multiply by 1000 */ | |
959 | if (_rl_keyseq_timeout > 0 && | |
960 | (RL_ISSTATE (RL_STATE_INPUTPENDING|RL_STATE_MACROINPUT) == 0) && | |
961 | _rl_pushed_input_available () == 0 && | |
962 | _rl_dispatching_keymap[ANYOTHERKEY].function && | |
963 | _rl_input_queued (_rl_keyseq_timeout*1000) == 0) | |
a0350e08 | 964 | return (_rl_subseq_result (-2, map, key, got_subseq)); |
a0350e08 | 965 | |
19e1dd93 | 966 | newkey = _rl_subseq_getchar (key); |
f73dda09 JA |
967 | if (newkey < 0) |
968 | { | |
969 | _rl_abort_internal (); | |
970 | return -1; | |
971 | } | |
972 | ||
19e1dd93 CR |
973 | r = _rl_dispatch_subseq (newkey, _rl_dispatching_keymap, got_subseq || map[ANYOTHERKEY].function); |
974 | return _rl_subseq_result (r, map, key, got_subseq); | |
726f6388 JA |
975 | } |
976 | else | |
977 | { | |
939d190e | 978 | _rl_abort_internal (); /* XXX */ |
726f6388 JA |
979 | return -1; |
980 | } | |
981 | break; | |
982 | ||
983 | case ISMACR: | |
28ef6c31 | 984 | if (map[key].function != 0) |
726f6388 | 985 | { |
2dead0c4 | 986 | rl_executing_keyseq[rl_key_sequence_length] = '\0'; |
726f6388 | 987 | macro = savestring ((char *)map[key].function); |
ccc6cda3 | 988 | _rl_with_macro_input (macro); |
726f6388 JA |
989 | return 0; |
990 | } | |
991 | break; | |
992 | } | |
993 | #if defined (VI_MODE) | |
994 | if (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap && | |
d3a24ed2 | 995 | key != ANYOTHERKEY && |
f7958d04 | 996 | _rl_dispatching_keymap == vi_movement_keymap && |
ccc6cda3 | 997 | _rl_vi_textmod_command (key)) |
726f6388 JA |
998 | _rl_vi_set_last (key, rl_numeric_arg, rl_arg_sign); |
999 | #endif | |
19e1dd93 | 1000 | |
726f6388 JA |
1001 | return (r); |
1002 | } | |
1003 | ||
19e1dd93 CR |
1004 | static int |
1005 | _rl_subseq_result (r, map, key, got_subseq) | |
1006 | int r; | |
1007 | Keymap map; | |
1008 | int key, got_subseq; | |
1009 | { | |
1010 | Keymap m; | |
1011 | int type, nt; | |
1012 | rl_command_func_t *func, *nf; | |
0527c903 | 1013 | |
19e1dd93 CR |
1014 | if (r == -2) |
1015 | /* We didn't match anything, and the keymap we're indexed into | |
1016 | shadowed a function previously bound to that prefix. Call | |
1017 | the function. The recursive call to _rl_dispatch_subseq has | |
1018 | already taken care of pushing any necessary input back onto | |
1019 | the input queue with _rl_unget_char. */ | |
1020 | { | |
1021 | m = _rl_dispatching_keymap; | |
1022 | type = m[ANYOTHERKEY].type; | |
1023 | func = m[ANYOTHERKEY].function; | |
1024 | if (type == ISFUNC && func == rl_do_lowercase_version) | |
1025 | r = _rl_dispatch (_rl_to_lower (key), map); | |
b47ecd02 | 1026 | else if (type == ISFUNC) |
19e1dd93 | 1027 | { |
b47ecd02 CR |
1028 | /* If we shadowed a function, whatever it is, we somehow need a |
1029 | keymap with map[key].func == shadowed-function. | |
1030 | Let's use this one. Then we can dispatch using the original | |
1031 | key, since there are commands (e.g., in vi mode) for which it | |
1032 | matters. */ | |
19e1dd93 CR |
1033 | nt = m[key].type; |
1034 | nf = m[key].function; | |
1035 | ||
1036 | m[key].type = type; | |
1037 | m[key].function = func; | |
1038 | r = _rl_dispatch (key, m); | |
1039 | m[key].type = nt; | |
1040 | m[key].function = nf; | |
1041 | } | |
1042 | else | |
b47ecd02 | 1043 | /* We probably shadowed a keymap, so keep going. */ |
19e1dd93 CR |
1044 | r = _rl_dispatch (ANYOTHERKEY, m); |
1045 | } | |
1046 | else if (r && map[ANYOTHERKEY].function) | |
1047 | { | |
1048 | /* We didn't match (r is probably -1), so return something to | |
1049 | tell the caller that it should try ANYOTHERKEY for an | |
1050 | overridden function. */ | |
9711fdc5 CR |
1051 | if (RL_ISSTATE (RL_STATE_MACROINPUT)) |
1052 | _rl_prev_macro_key (); | |
1053 | else | |
1054 | _rl_unget_char (key); | |
19e1dd93 CR |
1055 | _rl_dispatching_keymap = map; |
1056 | return -2; | |
1057 | } | |
1058 | else if (r && got_subseq) | |
1059 | { | |
1060 | /* OK, back up the chain. */ | |
9711fdc5 CR |
1061 | if (RL_ISSTATE (RL_STATE_MACROINPUT)) |
1062 | _rl_prev_macro_key (); | |
1063 | else | |
1064 | _rl_unget_char (key); | |
19e1dd93 CR |
1065 | _rl_dispatching_keymap = map; |
1066 | return -1; | |
1067 | } | |
1068 | ||
1069 | return r; | |
1070 | } | |
1071 | ||
726f6388 JA |
1072 | /* **************************************************************** */ |
1073 | /* */ | |
ccc6cda3 | 1074 | /* Initializations */ |
726f6388 JA |
1075 | /* */ |
1076 | /* **************************************************************** */ | |
1077 | ||
d166f048 | 1078 | /* Initialize readline (and terminal if not already). */ |
ccc6cda3 JA |
1079 | int |
1080 | rl_initialize () | |
1081 | { | |
1082 | /* If we have never been called before, initialize the | |
1083 | terminal and data structures. */ | |
1084 | if (!rl_initialized) | |
1085 | { | |
28ef6c31 | 1086 | RL_SETSTATE(RL_STATE_INITIALIZING); |
ccc6cda3 | 1087 | readline_initialize_everything (); |
28ef6c31 | 1088 | RL_UNSETSTATE(RL_STATE_INITIALIZING); |
ccc6cda3 | 1089 | rl_initialized++; |
28ef6c31 | 1090 | RL_SETSTATE(RL_STATE_INITIALIZED); |
ccc6cda3 | 1091 | } |
726f6388 | 1092 | |
39feef01 | 1093 | /* Initialize the current line information. */ |
d166f048 | 1094 | _rl_init_line_state (); |
726f6388 | 1095 | |
ccc6cda3 JA |
1096 | /* We aren't done yet. We haven't even gotten started yet! */ |
1097 | rl_done = 0; | |
28ef6c31 | 1098 | RL_UNSETSTATE(RL_STATE_DONE); |
726f6388 | 1099 | |
ccc6cda3 | 1100 | /* Tell the history routines what is going on. */ |
7117c2d2 | 1101 | _rl_start_using_history (); |
726f6388 | 1102 | |
ccc6cda3 JA |
1103 | /* Make the display buffer match the state of the line. */ |
1104 | rl_reset_line_state (); | |
726f6388 | 1105 | |
ccc6cda3 | 1106 | /* No such function typed yet. */ |
28ef6c31 | 1107 | rl_last_func = (rl_command_func_t *)NULL; |
726f6388 | 1108 | |
ccc6cda3 JA |
1109 | /* Parsing of key-bindings begins in an enabled state. */ |
1110 | _rl_parsing_conditionalized_out = 0; | |
726f6388 | 1111 | |
ccc6cda3 JA |
1112 | #if defined (VI_MODE) |
1113 | if (rl_editing_mode == vi_mode) | |
1114 | _rl_vi_initialize_line (); | |
1115 | #endif | |
726f6388 | 1116 | |
7117c2d2 JA |
1117 | /* Each line starts in insert mode (the default). */ |
1118 | _rl_set_insert_mode (RL_IM_DEFAULT, 1); | |
1119 | ||
ccc6cda3 JA |
1120 | return 0; |
1121 | } | |
726f6388 | 1122 | |
bb70624e | 1123 | #if 0 |
d166f048 JA |
1124 | #if defined (__EMX__) |
1125 | static void | |
1126 | _emx_build_environ () | |
1127 | { | |
1128 | TIB *tibp; | |
1129 | PIB *pibp; | |
1130 | char *t, **tp; | |
1131 | int c; | |
1132 | ||
1133 | DosGetInfoBlocks (&tibp, &pibp); | |
1134 | t = pibp->pib_pchenv; | |
1135 | for (c = 1; *t; c++) | |
1136 | t += strlen (t) + 1; | |
1137 | tp = environ = (char **)xmalloc ((c + 1) * sizeof (char *)); | |
1138 | t = pibp->pib_pchenv; | |
1139 | while (*t) | |
1140 | { | |
1141 | *tp++ = t; | |
1142 | t += strlen (t) + 1; | |
1143 | } | |
1144 | *tp = 0; | |
1145 | } | |
1146 | #endif /* __EMX__ */ | |
bb70624e | 1147 | #endif |
d166f048 | 1148 | |
ccc6cda3 | 1149 | /* Initialize the entire state of the world. */ |
726f6388 | 1150 | static void |
ccc6cda3 | 1151 | readline_initialize_everything () |
726f6388 | 1152 | { |
bb70624e | 1153 | #if 0 |
d166f048 JA |
1154 | #if defined (__EMX__) |
1155 | if (environ == 0) | |
1156 | _emx_build_environ (); | |
bb70624e | 1157 | #endif |
d166f048 JA |
1158 | #endif |
1159 | ||
28ef6c31 JA |
1160 | #if 0 |
1161 | /* Find out if we are running in Emacs -- UNUSED. */ | |
1162 | running_in_emacs = sh_get_env_value ("EMACS") != (char *)0; | |
1163 | #endif | |
726f6388 | 1164 | |
ccc6cda3 JA |
1165 | /* Set up input and output if they are not already set up. */ |
1166 | if (!rl_instream) | |
1167 | rl_instream = stdin; | |
726f6388 | 1168 | |
ccc6cda3 JA |
1169 | if (!rl_outstream) |
1170 | rl_outstream = stdout; | |
726f6388 | 1171 | |
ccc6cda3 JA |
1172 | /* Bind _rl_in_stream and _rl_out_stream immediately. These values |
1173 | may change, but they may also be used before readline_internal () | |
1174 | is called. */ | |
1175 | _rl_in_stream = rl_instream; | |
1176 | _rl_out_stream = rl_outstream; | |
726f6388 | 1177 | |
ccc6cda3 | 1178 | /* Allocate data structures. */ |
d166f048 | 1179 | if (rl_line_buffer == 0) |
f73dda09 | 1180 | rl_line_buffer = (char *)xmalloc (rl_line_buffer_len = DEFAULT_BUFFER_SIZE); |
726f6388 | 1181 | |
ccc6cda3 | 1182 | /* Initialize the terminal interface. */ |
28ef6c31 JA |
1183 | if (rl_terminal_name == 0) |
1184 | rl_terminal_name = sh_get_env_value ("TERM"); | |
1185 | _rl_init_terminal_io (rl_terminal_name); | |
726f6388 | 1186 | |
ccc6cda3 JA |
1187 | /* Bind tty characters to readline functions. */ |
1188 | readline_default_bindings (); | |
726f6388 | 1189 | |
ccc6cda3 JA |
1190 | /* Initialize the function names. */ |
1191 | rl_initialize_funmap (); | |
726f6388 | 1192 | |
ccc6cda3 JA |
1193 | /* Decide whether we should automatically go into eight-bit mode. */ |
1194 | _rl_init_eightbit (); | |
1195 | ||
1196 | /* Read in the init file. */ | |
1197 | rl_read_init_file ((char *)NULL); | |
726f6388 | 1198 | |
ccc6cda3 JA |
1199 | /* XXX */ |
1200 | if (_rl_horizontal_scroll_mode && _rl_term_autowrap) | |
726f6388 | 1201 | { |
28ef6c31 JA |
1202 | _rl_screenwidth--; |
1203 | _rl_screenchars -= _rl_screenheight; | |
726f6388 | 1204 | } |
726f6388 | 1205 | |
ccc6cda3 JA |
1206 | /* Override the effect of any `set keymap' assignments in the |
1207 | inputrc file. */ | |
1208 | rl_set_keymap_from_edit_mode (); | |
726f6388 JA |
1209 | |
1210 | /* Try to bind a common arrow key prefix, if not already bound. */ | |
1211 | bind_arrow_keys (); | |
1212 | ||
f3aad56d CR |
1213 | /* Bind the bracketed paste prefix assuming that the user will enable |
1214 | it on terminals that support it. */ | |
1215 | bind_bracketed_paste_prefix (); | |
1216 | ||
726f6388 JA |
1217 | /* If the completion parser's default word break characters haven't |
1218 | been set yet, then do so now. */ | |
1219 | if (rl_completer_word_break_characters == (char *)NULL) | |
d3a24ed2 | 1220 | rl_completer_word_break_characters = (char *)rl_basic_word_break_characters; |
2dead0c4 | 1221 | |
5a318736 | 1222 | #if defined (COLOR_SUPPORT) |
0a233f3e | 1223 | if (_rl_colored_stats || _rl_colored_completion_prefix) |
5a318736 CR |
1224 | _rl_parse_colors (); |
1225 | #endif | |
1226 | ||
2dead0c4 CR |
1227 | rl_executing_keyseq = malloc (_rl_executing_keyseq_size = 16); |
1228 | if (rl_executing_keyseq) | |
1229 | rl_executing_keyseq[0] = '\0'; | |
726f6388 JA |
1230 | } |
1231 | ||
1232 | /* If this system allows us to look at the values of the regular | |
1233 | input editing characters, then bind them to their readline | |
1234 | equivalents, iff the characters are not bound to keymaps. */ | |
1235 | static void | |
1236 | readline_default_bindings () | |
1237 | { | |
453f278a CR |
1238 | if (_rl_bind_stty_chars) |
1239 | rl_tty_set_default_bindings (_rl_keymap); | |
726f6388 JA |
1240 | } |
1241 | ||
d3a24ed2 CR |
1242 | /* Reset the default bindings for the terminal special characters we're |
1243 | interested in back to rl_insert and read the new ones. */ | |
1244 | static void | |
1245 | reset_default_bindings () | |
1246 | { | |
453f278a CR |
1247 | if (_rl_bind_stty_chars) |
1248 | { | |
1249 | rl_tty_unset_default_bindings (_rl_keymap); | |
1250 | rl_tty_set_default_bindings (_rl_keymap); | |
1251 | } | |
d3a24ed2 CR |
1252 | } |
1253 | ||
7117c2d2 | 1254 | /* Bind some common arrow key sequences in MAP. */ |
726f6388 | 1255 | static void |
7117c2d2 JA |
1256 | bind_arrow_keys_internal (map) |
1257 | Keymap map; | |
726f6388 | 1258 | { |
7117c2d2 JA |
1259 | Keymap xkeymap; |
1260 | ||
1261 | xkeymap = _rl_keymap; | |
1262 | _rl_keymap = map; | |
726f6388 | 1263 | |
bb70624e | 1264 | #if defined (__MSDOS__) |
d3a24ed2 CR |
1265 | rl_bind_keyseq_if_unbound ("\033[0A", rl_get_previous_history); |
1266 | rl_bind_keyseq_if_unbound ("\033[0B", rl_backward_char); | |
1267 | rl_bind_keyseq_if_unbound ("\033[0C", rl_forward_char); | |
1268 | rl_bind_keyseq_if_unbound ("\033[0D", rl_get_next_history); | |
bb70624e | 1269 | #endif |
726f6388 | 1270 | |
d3a24ed2 CR |
1271 | rl_bind_keyseq_if_unbound ("\033[A", rl_get_previous_history); |
1272 | rl_bind_keyseq_if_unbound ("\033[B", rl_get_next_history); | |
1273 | rl_bind_keyseq_if_unbound ("\033[C", rl_forward_char); | |
1274 | rl_bind_keyseq_if_unbound ("\033[D", rl_backward_char); | |
1275 | rl_bind_keyseq_if_unbound ("\033[H", rl_beg_of_line); | |
1276 | rl_bind_keyseq_if_unbound ("\033[F", rl_end_of_line); | |
1277 | ||
1278 | rl_bind_keyseq_if_unbound ("\033OA", rl_get_previous_history); | |
1279 | rl_bind_keyseq_if_unbound ("\033OB", rl_get_next_history); | |
1280 | rl_bind_keyseq_if_unbound ("\033OC", rl_forward_char); | |
1281 | rl_bind_keyseq_if_unbound ("\033OD", rl_backward_char); | |
1282 | rl_bind_keyseq_if_unbound ("\033OH", rl_beg_of_line); | |
1283 | rl_bind_keyseq_if_unbound ("\033OF", rl_end_of_line); | |
7117c2d2 | 1284 | |
da719982 CR |
1285 | #if defined (__MINGW32__) |
1286 | rl_bind_keyseq_if_unbound ("\340H", rl_get_previous_history); | |
1287 | rl_bind_keyseq_if_unbound ("\340P", rl_get_next_history); | |
1288 | rl_bind_keyseq_if_unbound ("\340M", rl_forward_char); | |
1289 | rl_bind_keyseq_if_unbound ("\340K", rl_backward_char); | |
77b3aacb CR |
1290 | rl_bind_keyseq_if_unbound ("\340G", rl_beg_of_line); |
1291 | rl_bind_keyseq_if_unbound ("\340O", rl_end_of_line); | |
1292 | rl_bind_keyseq_if_unbound ("\340S", rl_delete); | |
f4fbf1fe CR |
1293 | rl_bind_keyseq_if_unbound ("\340R", rl_overwrite_mode); |
1294 | ||
1295 | /* These may or may not work because of the embedded NUL. */ | |
1296 | rl_bind_keyseq_if_unbound ("\\000H", rl_get_previous_history); | |
1297 | rl_bind_keyseq_if_unbound ("\\000P", rl_get_next_history); | |
1298 | rl_bind_keyseq_if_unbound ("\\000M", rl_forward_char); | |
1299 | rl_bind_keyseq_if_unbound ("\\000K", rl_backward_char); | |
1300 | rl_bind_keyseq_if_unbound ("\\000G", rl_beg_of_line); | |
1301 | rl_bind_keyseq_if_unbound ("\\000O", rl_end_of_line); | |
1302 | rl_bind_keyseq_if_unbound ("\\000S", rl_delete); | |
1303 | rl_bind_keyseq_if_unbound ("\\000R", rl_overwrite_mode); | |
da719982 CR |
1304 | #endif |
1305 | ||
7117c2d2 | 1306 | _rl_keymap = xkeymap; |
726f6388 JA |
1307 | } |
1308 | ||
7117c2d2 | 1309 | /* Try and bind the common arrow key prefixes after giving termcap and |
726f6388 JA |
1310 | the inputrc file a chance to bind them and create `real' keymaps |
1311 | for the arrow key prefix. */ | |
1312 | static void | |
1313 | bind_arrow_keys () | |
1314 | { | |
7117c2d2 | 1315 | bind_arrow_keys_internal (emacs_standard_keymap); |
726f6388 JA |
1316 | |
1317 | #if defined (VI_MODE) | |
7117c2d2 | 1318 | bind_arrow_keys_internal (vi_movement_keymap); |
9dd88db7 CR |
1319 | /* Unbind vi_movement_keymap[ESC] to allow users to repeatedly hit ESC |
1320 | in vi command mode while still allowing the arrow keys to work. */ | |
1321 | if (vi_movement_keymap[ESC].type == ISKMAP) | |
1322 | rl_bind_keyseq_in_map ("\033", (rl_command_func_t *)NULL, vi_movement_keymap); | |
7117c2d2 | 1323 | bind_arrow_keys_internal (vi_insertion_keymap); |
726f6388 | 1324 | #endif |
cce855bc JA |
1325 | } |
1326 | ||
f3aad56d CR |
1327 | static void |
1328 | bind_bracketed_paste_prefix () | |
1329 | { | |
1330 | Keymap xkeymap; | |
1331 | ||
1332 | xkeymap = _rl_keymap; | |
1333 | ||
1334 | _rl_keymap = emacs_standard_keymap; | |
1335 | rl_bind_keyseq_if_unbound (BRACK_PASTE_PREF, rl_bracketed_paste_begin); | |
1336 | ||
1337 | _rl_keymap = vi_insertion_keymap; | |
1338 | rl_bind_keyseq_if_unbound (BRACK_PASTE_PREF, rl_bracketed_paste_begin); | |
1339 | ||
1340 | _rl_keymap = xkeymap; | |
1341 | } | |
1342 | ||
ccc6cda3 JA |
1343 | /* **************************************************************** */ |
1344 | /* */ | |
7117c2d2 | 1345 | /* Saving and Restoring Readline's state */ |
ccc6cda3 JA |
1346 | /* */ |
1347 | /* **************************************************************** */ | |
726f6388 | 1348 | |
ccc6cda3 | 1349 | int |
7117c2d2 JA |
1350 | rl_save_state (sp) |
1351 | struct readline_state *sp; | |
ccc6cda3 | 1352 | { |
7117c2d2 JA |
1353 | if (sp == 0) |
1354 | return -1; | |
726f6388 | 1355 | |
7117c2d2 JA |
1356 | sp->point = rl_point; |
1357 | sp->end = rl_end; | |
1358 | sp->mark = rl_mark; | |
1359 | sp->buffer = rl_line_buffer; | |
1360 | sp->buflen = rl_line_buffer_len; | |
1361 | sp->ul = rl_undo_list; | |
1362 | sp->prompt = rl_prompt; | |
1363 | ||
1364 | sp->rlstate = rl_readline_state; | |
1365 | sp->done = rl_done; | |
1366 | sp->kmap = _rl_keymap; | |
1367 | ||
1368 | sp->lastfunc = rl_last_func; | |
1369 | sp->insmode = rl_insert_mode; | |
1370 | sp->edmode = rl_editing_mode; | |
03d922b1 | 1371 | sp->kseq = rl_executing_keyseq; |
7117c2d2 JA |
1372 | sp->kseqlen = rl_key_sequence_length; |
1373 | sp->inf = rl_instream; | |
1374 | sp->outf = rl_outstream; | |
1375 | sp->pendingin = rl_pending_input; | |
1376 | sp->macro = rl_executing_macro; | |
1377 | ||
1378 | sp->catchsigs = rl_catch_signals; | |
1379 | sp->catchsigwinch = rl_catch_sigwinch; | |
726f6388 | 1380 | |
03d922b1 CR |
1381 | sp->entryfunc = rl_completion_entry_function; |
1382 | sp->menuentryfunc = rl_menu_completion_entry_function; | |
1383 | sp->ignorefunc = rl_ignore_some_completions_function; | |
1384 | sp->attemptfunc = rl_attempted_completion_function; | |
1385 | sp->wordbreakchars = rl_completer_word_break_characters; | |
1386 | ||
7117c2d2 | 1387 | return (0); |
726f6388 JA |
1388 | } |
1389 | ||
ccc6cda3 | 1390 | int |
7117c2d2 JA |
1391 | rl_restore_state (sp) |
1392 | struct readline_state *sp; | |
726f6388 | 1393 | { |
7117c2d2 JA |
1394 | if (sp == 0) |
1395 | return -1; | |
ccc6cda3 | 1396 | |
7117c2d2 JA |
1397 | rl_point = sp->point; |
1398 | rl_end = sp->end; | |
1399 | rl_mark = sp->mark; | |
1400 | the_line = rl_line_buffer = sp->buffer; | |
1401 | rl_line_buffer_len = sp->buflen; | |
1402 | rl_undo_list = sp->ul; | |
1403 | rl_prompt = sp->prompt; | |
1404 | ||
1405 | rl_readline_state = sp->rlstate; | |
1406 | rl_done = sp->done; | |
1407 | _rl_keymap = sp->kmap; | |
1408 | ||
1409 | rl_last_func = sp->lastfunc; | |
1410 | rl_insert_mode = sp->insmode; | |
1411 | rl_editing_mode = sp->edmode; | |
03d922b1 | 1412 | rl_executing_keyseq = sp->kseq; |
7117c2d2 JA |
1413 | rl_key_sequence_length = sp->kseqlen; |
1414 | rl_instream = sp->inf; | |
1415 | rl_outstream = sp->outf; | |
1416 | rl_pending_input = sp->pendingin; | |
1417 | rl_executing_macro = sp->macro; | |
1418 | ||
1419 | rl_catch_signals = sp->catchsigs; | |
1420 | rl_catch_sigwinch = sp->catchsigwinch; | |
ccc6cda3 | 1421 | |
03d922b1 CR |
1422 | rl_completion_entry_function = sp->entryfunc; |
1423 | rl_menu_completion_entry_function = sp->menuentryfunc; | |
1424 | rl_ignore_some_completions_function = sp->ignorefunc; | |
1425 | rl_attempted_completion_function = sp->attemptfunc; | |
1426 | rl_completer_word_break_characters = sp->wordbreakchars; | |
1427 | ||
ccc6cda3 JA |
1428 | return (0); |
1429 | } |