1: /* readline.c -- a general facility for reading lines of input
2: with emacs style editing and completion. */
3:
4: /* Copyright (C) 1987-2020 Free Software Foundation, Inc.
5:
6: This file is part of the GNU Readline Library (Readline), a library
7: for reading lines of text with interactive input and history editing.
8:
9: Readline is free software: you can redistribute it and/or modify
10: it under the terms of the GNU General Public License as published by
11: the Free Software Foundation, either version 3 of the License, or
12: (at your option) any later version.
13:
14: Readline is distributed in the hope that it will be useful,
15: but WITHOUT ANY WARRANTY; without even the implied warranty of
16: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: GNU General Public License for more details.
18:
19: You should have received a copy of the GNU General Public License
20: along with Readline. If not, see <http://www.gnu.org/licenses/>.
21: */
22:
23: #define READLINE_LIBRARY
24:
25: #if defined (HAVE_CONFIG_H)
26: # include <config.h>
27: #endif
28:
29: #include <sys/types.h>
30: #include "posixstat.h"
31: #include <fcntl.h>
32: #if defined (HAVE_SYS_FILE_H)
33: # include <sys/file.h>
34: #endif /* HAVE_SYS_FILE_H */
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:
46: #if defined (HAVE_LOCALE_H)
47: # include <locale.h>
48: #endif
49:
50: #include <stdio.h>
51: #include "posixjmp.h"
52: #include <errno.h>
53:
54: #if !defined (errno)
55: extern int errno;
56: #endif /* !errno */
57:
58: /* System-specific feature definitions and include files. */
59: #include "rldefs.h"
60: #include "rlmbutil.h"
61:
62: #if defined (__EMX__)
63: # define INCL_DOSPROCESS
64: # include <os2.h>
65: #endif /* __EMX__ */
66:
67: /* Some standard library routines. */
68: #include "readline.h"
69: #include "history.h"
70:
71: #include "rlprivate.h"
72: #include "rlshell.h"
73: #include "xmalloc.h"
74:
75: #ifndef RL_LIBRARY_VERSION
76: # define RL_LIBRARY_VERSION "8.0"
77: #endif
78:
79: #ifndef RL_READLINE_VERSION
80: # define RL_READLINE_VERSION 0x0800
81: #endif
82:
83: extern void _rl_free_history_entry PARAMS((HIST_ENTRY *));
84:
85: #if defined (COLOR_SUPPORT)
86: extern void _rl_parse_colors PARAMS((void)); /* XXX */
87: #endif
88:
89:
90: /* Forward declarations used in this file. */
91: static char *readline_internal PARAMS((void));
92: static void readline_initialize_everything PARAMS((void));
93:
94: static void bind_arrow_keys_internal PARAMS((Keymap));
95: static void bind_arrow_keys PARAMS((void));
96:
97: static void bind_bracketed_paste_prefix PARAMS((void));
98:
99: static void readline_default_bindings PARAMS((void));
100: static void reset_default_bindings PARAMS((void));
101:
102: static int _rl_subseq_result PARAMS((int, Keymap, int, int));
103: static int _rl_subseq_getchar PARAMS((int));
104:
105: /* **************************************************************** */
106: /* */
107: /* Line editing input utility */
108: /* */
109: /* **************************************************************** */
110:
111: const char *rl_library_version = RL_LIBRARY_VERSION;
112:
113: int rl_readline_version = RL_READLINE_VERSION;
114:
115: /* True if this is `real' readline as opposed to some stub substitute. */
116: int rl_gnu_readline_p = 1;
117:
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:
125: /* The current insert mode: input (the default) or overwrite */
126: int rl_insert_mode = RL_IM_DEFAULT;
127:
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:
133: /* Non-zero if the previous command was a kill command. */
134: int _rl_last_command_was_kill = 0;
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. */
146: static int rl_initialized;
147:
148: #if 0
149: /* If non-zero, this program is running in an EMACS buffer. */
150: static int running_in_emacs;
151: #endif
152:
153: /* Flags word encapsulating the current readline state. */
154: unsigned long rl_readline_state = RL_STATE_NONE;
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. */
169: rl_command_func_t *rl_last_func = (rl_command_func_t *)NULL;
170:
171: /* Top level environment for readline_internal (). */
172: procenv_t _rl_top_level;
173:
174: /* The streams we interact with. */
175: FILE *_rl_in_stream, *_rl_out_stream;
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:
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. */
185: int _rl_echoing_p = 0;
186:
187: /* Current prompt. */
188: char *rl_prompt = (char *)NULL;
189: int rl_visible_prompt_length = 0;
190:
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:
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
199: before readline_internal_setup () prints the first prompt. */
200: rl_hook_func_t *rl_startup_hook = (rl_hook_func_t *)NULL;
201:
202: /* Any readline function can set this and have it run just before the user's
203: rl_startup_hook. */
204: rl_hook_func_t *_rl_internal_startup_hook = (rl_hook_func_t *)NULL;
205:
206: /* If non-zero, this is the address of a function to call just before
207: readline_internal_setup () returns and readline_internal starts
208: reading input characters. */
209: rl_hook_func_t *rl_pre_input_hook = (rl_hook_func_t *)NULL;
210:
211: /* What we use internally. You should always refer to RL_LINE_BUFFER. */
212: static char *the_line;
213:
214: /* The character that can generate an EOF. Really read from
215: the terminal driver... just defaulted here. */
216: int _rl_eof_char = CTRL ('D');
217:
218: /* Non-zero makes this the next keystroke to read. */
219: int rl_pending_input = 0;
220:
221: /* If non-zero when readline_internal returns, it means we found EOF */
222: int _rl_eof_found = 0;
223:
224: /* Pointer to a useful terminal name. */
225: const char *rl_terminal_name = (const char *)NULL;
226:
227: /* Non-zero means to always use horizontal scrolling in line display. */
228: int _rl_horizontal_scroll_mode = 0;
229:
230: /* Non-zero means to display an asterisk at the starts of history lines
231: which have been modified. */
232: int _rl_mark_modified_lines = 0;
233:
234: /* The style of `bell' notification preferred. This can be set to NO_BELL,
235: AUDIBLE_BELL, or VISIBLE_BELL. */
236: int _rl_bell_preference = AUDIBLE_BELL;
237:
238: /* String inserted into the line by rl_insert_comment (). */
239: char *_rl_comment_begin;
240:
241: /* Keymap holding the function currently being executed. */
242: Keymap rl_executing_keymap;
243:
244: /* Keymap we're currently using to dispatch. */
245: Keymap _rl_dispatching_keymap;
246:
247: /* Non-zero means to erase entire line, including prompt, on empty input lines. */
248: int rl_erase_empty_line = 0;
249:
250: /* Non-zero means to read only this many characters rather than up to a
251: character bound to accept-line. */
252: int rl_num_chars_to_read = 0;
253:
254: /* Line buffer and maintenance. */
255: char *rl_line_buffer = (char *)NULL;
256: int rl_line_buffer_len = 0;
257:
258: /* Key sequence `contexts' */
259: _rl_keyseq_cxt *_rl_kscxt = 0;
260:
261: int rl_executing_key;
262: char *rl_executing_keyseq = 0;
263: int _rl_executing_keyseq_size = 0;
264:
265: struct _rl_cmd _rl_pending_command;
266: struct _rl_cmd *_rl_command_to_execute = (struct _rl_cmd *)NULL;
267:
268: /* Timeout (specified in milliseconds) when reading characters making up an
269: ambiguous multiple-key sequence */
270: int _rl_keyseq_timeout = 500;
271:
272: #define RESIZE_KEYSEQ_BUFFER() \
273: do \
274: { \
275: if (rl_key_sequence_length + 2 >= _rl_executing_keyseq_size) \
276: { \
277: _rl_executing_keyseq_size += 16; \
278: rl_executing_keyseq = xrealloc (rl_executing_keyseq, _rl_executing_keyseq_size); \
279: } \
280: } \
281: while (0);
282:
283: /* Forward declarations used by the display, termcap, and history code. */
284:
285: /* **************************************************************** */
286: /* */
287: /* `Forward' declarations */
288: /* */
289: /* **************************************************************** */
290:
291: /* Non-zero means do not parse any lines other than comments and
292: parser directives. */
293: unsigned char _rl_parsing_conditionalized_out = 0;
294:
295: /* Non-zero means to convert characters with the meta bit set to
296: escape-prefixed characters so we can indirect through
297: emacs_meta_keymap or vi_escape_keymap. */
298: int _rl_convert_meta_chars_to_ascii = 1;
299:
300: /* Non-zero means to output characters with the meta bit set directly
301: rather than as a meta-prefixed escape sequence. */
302: int _rl_output_meta_chars = 0;
303:
304: /* Non-zero means to look at the termios special characters and bind
305: them to equivalent readline functions at startup. */
306: int _rl_bind_stty_chars = 1;
307:
308: /* Non-zero means to go through the history list at every newline (or
309: whenever rl_done is set and readline returns) and revert each line to
310: its initial state. */
311: int _rl_revert_all_at_newline = 0;
312:
313: /* Non-zero means to honor the termios ECHOCTL bit and echo control
314: characters corresponding to keyboard-generated signals. */
315: int _rl_echo_control_chars = 1;
316:
317: /* Non-zero means to prefix the displayed prompt with a character indicating
318: the editing mode: @ for emacs, : for vi-command, + for vi-insert. */
319: int _rl_show_mode_in_prompt = 0;
320:
321: /* Non-zero means to attempt to put the terminal in `bracketed paste mode',
322: where it will prefix pasted text with an escape sequence and send
323: another to mark the end of the paste. */
324: int _rl_enable_bracketed_paste = BRACKETED_PASTE_DEFAULT;
325: int _rl_enable_active_region = BRACKETED_PASTE_DEFAULT;
326:
327: /* **************************************************************** */
328: /* */
329: /* Top Level Functions */
330: /* */
331: /* **************************************************************** */
332:
333: /* Non-zero means treat 0200 bit in terminal input as Meta bit. */
334: int _rl_meta_flag = 0; /* Forward declaration */
335:
336: /* Set up the prompt and expand it. Called from readline() and
337: rl_callback_handler_install (). */
338: int
339: rl_set_prompt (const char *prompt)
340: {
341: FREE (rl_prompt);
342: rl_prompt = prompt ? savestring (prompt) : (char *)NULL;
343: rl_display_prompt = rl_prompt ? rl_prompt : "";
344:
345: rl_visible_prompt_length = rl_expand_prompt (rl_prompt);
346: return 0;
347: }
348:
349: /* Read a line of input. Prompt with PROMPT. An empty PROMPT means
350: none. A return value of NULL means that EOF was encountered. */
351: char *
352: readline (const char *prompt)
353: {
354: char *value;
355: #if 0
356: int in_callback;
357: #endif
358:
359: /* If we are at EOF return a NULL string. */
360: if (rl_pending_input == EOF)
361: {
362: rl_clear_pending_input ();
363: return ((char *)NULL);
364: }
365:
366: #if 0
367: /* If readline() is called after installing a callback handler, temporarily
368: turn off the callback state to avoid ensuing messiness. Patch supplied
369: by the gdb folks. XXX -- disabled. This can be fooled and readline
370: left in a strange state by a poorly-timed longjmp. */
371: if (in_callback = RL_ISSTATE (RL_STATE_CALLBACK))
372: RL_UNSETSTATE (RL_STATE_CALLBACK);
373: #endif
374:
375: rl_set_prompt (prompt);
376:
377: rl_initialize ();
378: if (rl_prep_term_function)
379: (*rl_prep_term_function) (_rl_meta_flag);
380:
381: #if defined (HANDLE_SIGNALS)
382: rl_set_signals ();
383: #endif
384:
385: value = readline_internal ();
386: if (rl_deprep_term_function)
387: (*rl_deprep_term_function) ();
388:
389: #if defined (HANDLE_SIGNALS)
390: rl_clear_signals ();
391: #endif
392:
393: #if 0
394: if (in_callback)
395: RL_SETSTATE (RL_STATE_CALLBACK);
396: #endif
397:
398: #if HAVE_DECL_AUDIT_USER_TTY && defined (HAVE_LIBAUDIT_H) && defined (ENABLE_TTY_AUDIT_SUPPORT)
399: if (value)
400: _rl_audit_tty (value);
401: #endif
402:
403: return (value);
404: }
405:
406: #if defined (READLINE_CALLBACKS)
407: # define STATIC_CALLBACK
408: #else
409: # define STATIC_CALLBACK static
410: #endif
411:
412: STATIC_CALLBACK void
413: readline_internal_setup (void)
414: {
415: char *nprompt;
416:
417: _rl_in_stream = rl_instream;
418: _rl_out_stream = rl_outstream;
419:
420: /* Enable the meta key only for the duration of readline(), if this
421: terminal has one and the terminal has been initialized */
422: if (_rl_enable_meta & RL_ISSTATE (RL_STATE_TERMPREPPED))
423: _rl_enable_meta_key ();
424:
425: if (rl_startup_hook)
426: (*rl_startup_hook) ();
427:
428: if (_rl_internal_startup_hook)
429: (*_rl_internal_startup_hook) ();
430:
431: rl_deactivate_mark ();
432:
433: #if defined (VI_MODE)
434: if (rl_editing_mode == vi_mode)
435: rl_vi_insertion_mode (1, 'i'); /* don't want to reset last */
436: else
437: #endif /* VI_MODE */
438: if (_rl_show_mode_in_prompt)
439: _rl_reset_prompt ();
440:
441: /* If we're not echoing, we still want to at least print a prompt, because
442: rl_redisplay will not do it for us. If the calling application has a
443: custom redisplay function, though, let that function handle it. */
444: if (_rl_echoing_p == 0 && rl_redisplay_function == rl_redisplay)
445: {
446: if (rl_prompt && rl_already_prompted == 0)
447: {
448: nprompt = _rl_strip_prompt (rl_prompt);
449: fprintf (_rl_out_stream, "%s", nprompt);
450: fflush (_rl_out_stream);
451: xfree (nprompt);
452: }
453: }
454: else
455: {
456: if (rl_prompt && rl_already_prompted)
457: rl_on_new_line_with_prompt ();
458: else
459: rl_on_new_line ();
460: (*rl_redisplay_function) ();
461: }
462:
463: if (rl_pre_input_hook)
464: (*rl_pre_input_hook) ();
465:
466: RL_CHECK_SIGNALS ();
467: }
468:
469: STATIC_CALLBACK char *
470: readline_internal_teardown (int eof)
471: {
472: char *temp;
473: HIST_ENTRY *entry;
474:
475: RL_CHECK_SIGNALS ();
476:
477: /* Restore the original of this history line, iff the line that we
478: are editing was originally in the history, AND the line has changed. */
479: entry = current_history ();
480:
481: if (entry && rl_undo_list)
482: {
483: temp = savestring (the_line);
484: rl_revert_line (1, 0);
485: entry = replace_history_entry (where_history (), the_line, (histdata_t)NULL);
486: _rl_free_history_entry (entry);
487:
488: strcpy (the_line, temp);
489: xfree (temp);
490: }
491:
492: if (_rl_revert_all_at_newline)
493: _rl_revert_all_lines ();
494:
495: /* At any rate, it is highly likely that this line has an undo list. Get
496: rid of it now. */
497: if (rl_undo_list)
498: rl_free_undo_list ();
499:
500: /* Disable the meta key, if this terminal has one and we were told to use it.
501: The check whether or not we sent the enable string is in
502: _rl_disable_meta_key(); the flag is set in _rl_enable_meta_key */
503: _rl_disable_meta_key ();
504:
505: /* Restore normal cursor, if available. */
506: _rl_set_insert_mode (RL_IM_INSERT, 0);
507:
508: return (eof ? (char *)NULL : savestring (the_line));
509: }
510:
511: void
512: _rl_internal_char_cleanup (void)
513: {
514: #if defined (VI_MODE)
515: /* In vi mode, when you exit insert mode, the cursor moves back
516: over the previous character. We explicitly check for that here. */
517: if (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap)
518: rl_vi_check ();
519: #endif /* VI_MODE */
520:
521: if (rl_num_chars_to_read && rl_end >= rl_num_chars_to_read)
522: {
523: (*rl_redisplay_function) ();
524: _rl_want_redisplay = 0;
525: rl_newline (1, '\n');
526: }
527:
528: if (rl_done == 0)
529: {
530: (*rl_redisplay_function) ();
531: _rl_want_redisplay = 0;
532: }
533:
534: /* If the application writer has told us to erase the entire line if
535: the only character typed was something bound to rl_newline, do so. */
536: if (rl_erase_empty_line && rl_done && rl_last_func == rl_newline &&
537: rl_point == 0 && rl_end == 0)
538: _rl_erase_entire_line ();
539: }
540:
541: STATIC_CALLBACK int
542: #if defined (READLINE_CALLBACKS)
543: readline_internal_char (void)
544: #else
545: readline_internal_charloop (void)
546: #endif
547: {
548: static int lastc, eof_found;
549: int c, code, lk, r;
550:
551: lastc = EOF;
552:
553: #if !defined (READLINE_CALLBACKS)
554: eof_found = 0;
555: while (rl_done == 0)
556: {
557: #endif
558: lk = _rl_last_command_was_kill;
559:
560: #if defined (HAVE_POSIX_SIGSETJMP)
561: code = sigsetjmp (_rl_top_level, 0);
562: #else
563: code = setjmp (_rl_top_level);
564: #endif
565:
566: if (code)
567: {
568: (*rl_redisplay_function) ();
569: _rl_want_redisplay = 0;
570: /* If we get here, we're not being called from something dispatched
571: from _rl_callback_read_char(), which sets up its own value of
572: _rl_top_level (saving and restoring the old, of course), so
573: we can just return here. */
574: if (RL_ISSTATE (RL_STATE_CALLBACK))
575: return (0);
576: }
577:
578: if (rl_pending_input == 0)
579: {
580: /* Then initialize the argument and number of keys read. */
581: _rl_reset_argument ();
582: rl_executing_keyseq[rl_key_sequence_length = 0] = '\0';
583: }
584:
585: RL_SETSTATE(RL_STATE_READCMD);
586: c = rl_read_key ();
587: RL_UNSETSTATE(RL_STATE_READCMD);
588:
589: /* look at input.c:rl_getc() for the circumstances under which this will
590: be returned; punt immediately on read error without converting it to
591: a newline; assume that rl_read_key has already called the signal
592: handler. */
593: if (c == READERR)
594: {
595: #if defined (READLINE_CALLBACKS)
596: RL_SETSTATE(RL_STATE_DONE);
597: return (rl_done = 1);
598: #else
599: eof_found = 1;
600: break;
601: #endif
602: }
603:
604: /* EOF typed to a non-blank line is ^D the first time, EOF the second
605: time in a row. This won't return any partial line read from the tty.
606: If we want to change this, to force any existing line to be returned
607: when read(2) reads EOF, for example, this is the place to change. */
608: if (c == EOF && rl_end)
609: {
610: if (RL_SIG_RECEIVED ())
611: {
612: RL_CHECK_SIGNALS ();
613: if (rl_signal_event_hook)
614: (*rl_signal_event_hook) (); /* XXX */
615: }
616:
617: /* XXX - reading two consecutive EOFs returns EOF */
618: if (RL_ISSTATE (RL_STATE_TERMPREPPED))
619: {
620: if (lastc == _rl_eof_char || lastc == EOF)
621: rl_end = 0;
622: else
623: c = _rl_eof_char;
624: }
625: else
626: c = NEWLINE;
627: }
628:
629: /* The character _rl_eof_char typed to blank line, and not as the
630: previous character is interpreted as EOF. This doesn't work when
631: READLINE_CALLBACKS is defined, so hitting a series of ^Ds will
632: erase all the chars on the line and then return EOF. */
633: if (((c == _rl_eof_char && lastc != c) || c == EOF) && rl_end == 0)
634: {
635: #if defined (READLINE_CALLBACKS)
636: RL_SETSTATE(RL_STATE_DONE);
637: return (rl_done = 1);
638: #else
639: eof_found = 1;
640: break;
641: #endif
642: }
643:
644: lastc = c;
645: r = _rl_dispatch ((unsigned char)c, _rl_keymap);
646: RL_CHECK_SIGNALS ();
647:
648: if (_rl_command_to_execute)
649: {
650: (*rl_redisplay_function) ();
651:
652: rl_executing_keymap = _rl_command_to_execute->map;
653: rl_executing_key = _rl_command_to_execute->key;
654:
655: rl_dispatching = 1;
656: RL_SETSTATE(RL_STATE_DISPATCHING);
657: r = (*(_rl_command_to_execute->func)) (_rl_command_to_execute->count, _rl_command_to_execute->key);
658: _rl_command_to_execute = 0;
659: RL_UNSETSTATE(RL_STATE_DISPATCHING);
660: rl_dispatching = 0;
661:
662: RL_CHECK_SIGNALS ();
663: }
664:
665: /* If there was no change in _rl_last_command_was_kill, then no kill
666: has taken place. Note that if input is pending we are reading
667: a prefix command, so nothing has changed yet. */
668: if (rl_pending_input == 0 && lk == _rl_last_command_was_kill)
669: _rl_last_command_was_kill = 0;
670:
671: if (_rl_keep_mark_active)
672: _rl_keep_mark_active = 0;
673: else if (rl_mark_active_p ())
674: rl_deactivate_mark ();
675:
676: _rl_internal_char_cleanup ();
677:
678: #if defined (READLINE_CALLBACKS)
679: return 0;
680: #else
681: }
682:
683: return (eof_found);
684: #endif
685: }
686:
687: #if defined (READLINE_CALLBACKS)
688: static int
689: readline_internal_charloop (void)
690: {
691: int eof = 1;
692:
693: while (rl_done == 0)
694: eof = readline_internal_char ();
695: return (eof);
696: }
697: #endif /* READLINE_CALLBACKS */
698:
699: /* Read a line of input from the global rl_instream, doing output on
700: the global rl_outstream.
701: If rl_prompt is non-null, then that is our prompt. */
702: static char *
703: readline_internal (void)
704: {
705: readline_internal_setup ();
706: _rl_eof_found = readline_internal_charloop ();
707: return (readline_internal_teardown (_rl_eof_found));
708: }
709:
710: void
711: _rl_init_line_state (void)
712: {
713: rl_point = rl_end = rl_mark = 0;
714: the_line = rl_line_buffer;
715: the_line[0] = 0;
716: }
717:
718: void
719: _rl_set_the_line (void)
720: {
721: the_line = rl_line_buffer;
722: }
723:
724: #if defined (READLINE_CALLBACKS)
725: _rl_keyseq_cxt *
726: _rl_keyseq_cxt_alloc (void)
727: {
728: _rl_keyseq_cxt *cxt;
729:
730: cxt = (_rl_keyseq_cxt *)xmalloc (sizeof (_rl_keyseq_cxt));
731:
732: cxt->flags = cxt->subseq_arg = cxt->subseq_retval = 0;
733:
734: cxt->okey = 0;
735: cxt->ocxt = _rl_kscxt;
736: cxt->childval = 42; /* sentinel value */
737:
738: return cxt;
739: }
740:
741: void
742: _rl_keyseq_cxt_dispose (_rl_keyseq_cxt *cxt)
743: {
744: xfree (cxt);
745: }
746:
747: void
748: _rl_keyseq_chain_dispose (void)
749: {
750: _rl_keyseq_cxt *cxt;
751:
752: while (_rl_kscxt)
753: {
754: cxt = _rl_kscxt;
755: _rl_kscxt = _rl_kscxt->ocxt;
756: _rl_keyseq_cxt_dispose (cxt);
757: }
758: }
759: #endif
760:
761: static int
762: _rl_subseq_getchar (int key)
763: {
764: int k;
765:
766: if (key == ESC)
767: RL_SETSTATE(RL_STATE_METANEXT);
768: RL_SETSTATE(RL_STATE_MOREINPUT);
769: k = rl_read_key ();
770: RL_UNSETSTATE(RL_STATE_MOREINPUT);
771: if (key == ESC)
772: RL_UNSETSTATE(RL_STATE_METANEXT);
773:
774: return k;
775: }
776:
777: #if defined (READLINE_CALLBACKS)
778: int
779: _rl_dispatch_callback (_rl_keyseq_cxt *cxt)
780: {
781: int nkey, r;
782:
783: /* For now */
784: /* The first time this context is used, we want to read input and dispatch
785: on it. When traversing the chain of contexts back `up', we want to use
786: the value from the next context down. We're simulating recursion using
787: a chain of contexts. */
788: if ((cxt->flags & KSEQ_DISPATCHED) == 0)
789: {
790: nkey = _rl_subseq_getchar (cxt->okey);
791: if (nkey < 0)
792: {
793: _rl_abort_internal ();
794: return -1;
795: }
796: r = _rl_dispatch_subseq (nkey, cxt->dmap, cxt->subseq_arg);
797: cxt->flags |= KSEQ_DISPATCHED;
798: }
799: else
800: r = cxt->childval;
801:
802: /* For now */
803: if (r != -3) /* don't do this if we indicate there will be other matches */
804: r = _rl_subseq_result (r, cxt->oldmap, cxt->okey, (cxt->flags & KSEQ_SUBSEQ));
805:
806: RL_CHECK_SIGNALS ();
807: /* We only treat values < 0 specially to simulate recursion. */
808: if (r >= 0 || (r == -1 && (cxt->flags & KSEQ_SUBSEQ) == 0)) /* success! or failure! */
809: {
810: _rl_keyseq_chain_dispose ();
811: RL_UNSETSTATE (RL_STATE_MULTIKEY);
812: return r;
813: }
814:
815: if (r != -3) /* magic value that says we added to the chain */
816: _rl_kscxt = cxt->ocxt;
817: if (_rl_kscxt)
818: _rl_kscxt->childval = r;
819: if (r != -3)
820: _rl_keyseq_cxt_dispose (cxt);
821:
822: return r;
823: }
824: #endif /* READLINE_CALLBACKS */
825:
826: /* Do the command associated with KEY in MAP.
827: If the associated command is really a keymap, then read
828: another key, and dispatch into that map. */
829: int
830: _rl_dispatch (register int key, Keymap map)
831: {
832: _rl_dispatching_keymap = map;
833: return _rl_dispatch_subseq (key, map, 0);
834: }
835:
836: int
837: _rl_dispatch_subseq (register int key, Keymap map, int got_subseq)
838: {
839: int r, newkey;
840: char *macro;
841: rl_command_func_t *func;
842: #if defined (READLINE_CALLBACKS)
843: _rl_keyseq_cxt *cxt;
844: #endif
845:
846: if (META_CHAR (key) && _rl_convert_meta_chars_to_ascii)
847: {
848: if (map[ESC].type == ISKMAP)
849: {
850: if (RL_ISSTATE (RL_STATE_MACRODEF))
851: _rl_add_macro_char (ESC);
852: RESIZE_KEYSEQ_BUFFER ();
853: rl_executing_keyseq[rl_key_sequence_length++] = ESC;
854: map = FUNCTION_TO_KEYMAP (map, ESC);
855: key = UNMETA (key);
856: return (_rl_dispatch (key, map));
857: }
858: else
859: rl_ding ();
860: return 0;
861: }
862:
863: if (RL_ISSTATE (RL_STATE_MACRODEF))
864: _rl_add_macro_char (key);
865:
866: r = 0;
867: switch (map[key].type)
868: {
869: case ISFUNC:
870: func = map[key].function;
871: if (func)
872: {
873: /* Special case rl_do_lowercase_version (). */
874: if (func == rl_do_lowercase_version)
875: /* Should we do anything special if key == ANYOTHERKEY? */
876: return (_rl_dispatch (_rl_to_lower ((unsigned char)key), map));
877:
878: rl_executing_keymap = map;
879: rl_executing_key = key;
880:
881: RESIZE_KEYSEQ_BUFFER();
882: rl_executing_keyseq[rl_key_sequence_length++] = key;
883: rl_executing_keyseq[rl_key_sequence_length] = '\0';
884:
885: rl_dispatching = 1;
886: RL_SETSTATE(RL_STATE_DISPATCHING);
887: r = (*func) (rl_numeric_arg * rl_arg_sign, key);
888: RL_UNSETSTATE(RL_STATE_DISPATCHING);
889: rl_dispatching = 0;
890:
891: /* If we have input pending, then the last command was a prefix
892: command. Don't change the state of rl_last_func. Otherwise,
893: remember the last command executed in this variable. */
894: #if defined (VI_MODE)
895: if (rl_pending_input == 0 && map[key].function != rl_digit_argument && map[key].function != rl_vi_arg_digit)
896: #else
897: if (rl_pending_input == 0 && map[key].function != rl_digit_argument)
898: #endif
899: rl_last_func = map[key].function;
900:
901: RL_CHECK_SIGNALS ();
902: }
903: else if (map[ANYOTHERKEY].function)
904: {
905: /* OK, there's no function bound in this map, but there is a
906: shadow function that was overridden when the current keymap
907: was created. Return -2 to note that. */
908: if (RL_ISSTATE (RL_STATE_MACROINPUT))
909: _rl_prev_macro_key ();
910: else
911: _rl_unget_char (key);
912: if (rl_key_sequence_length > 0)
913: rl_executing_keyseq[--rl_key_sequence_length] = '\0';
914: return -2;
915: }
916: else if (got_subseq)
917: {
918: /* Return -1 to note that we're in a subsequence, but we don't
919: have a matching key, nor was one overridden. This means
920: we need to back up the recursion chain and find the last
921: subsequence that is bound to a function. */
922: if (RL_ISSTATE (RL_STATE_MACROINPUT))
923: _rl_prev_macro_key ();
924: else
925: _rl_unget_char (key);
926: if (rl_key_sequence_length > 0)
927: rl_executing_keyseq[--rl_key_sequence_length] = '\0';
928: return -1;
929: }
930: else
931: {
932: #if defined (READLINE_CALLBACKS)
933: RL_UNSETSTATE (RL_STATE_MULTIKEY);
934: _rl_keyseq_chain_dispose ();
935: #endif
936: _rl_abort_internal ();
937: return -1;
938: }
939: break;
940:
941: case ISKMAP:
942: if (map[key].function != 0)
943: {
944: #if defined (VI_MODE)
945: /* The only way this test will be true is if a subsequence has been
946: bound starting with ESC, generally the arrow keys. What we do is
947: check whether there's input in the queue, which there generally
948: will be if an arrow key has been pressed, and, if there's not,
949: just dispatch to (what we assume is) rl_vi_movement_mode right
950: away. This is essentially an input test with a zero timeout (by
951: default) or a timeout determined by the value of `keyseq-timeout' */
952: /* _rl_keyseq_timeout specified in milliseconds; _rl_input_queued
953: takes microseconds, so multiply by 1000 */
954: if (rl_editing_mode == vi_mode && key == ESC && map == vi_insertion_keymap &&
955: (RL_ISSTATE (RL_STATE_INPUTPENDING|RL_STATE_MACROINPUT) == 0) &&
956: _rl_pushed_input_available () == 0 &&
957: _rl_input_queued ((_rl_keyseq_timeout > 0) ? _rl_keyseq_timeout*1000 : 0) == 0)
958: return (_rl_dispatch (ANYOTHERKEY, FUNCTION_TO_KEYMAP (map, key)));
959: /* This is a very specific test. It can possibly be generalized in
960: the future, but for now it handles a specific case of ESC being
961: the last character in a keyboard macro. */
962: if (rl_editing_mode == vi_mode && key == ESC && map == vi_insertion_keymap &&
963: (RL_ISSTATE (RL_STATE_INPUTPENDING) == 0) &&
964: (RL_ISSTATE (RL_STATE_MACROINPUT) && _rl_peek_macro_key () == 0) &&
965: _rl_pushed_input_available () == 0 &&
966: _rl_input_queued ((_rl_keyseq_timeout > 0) ? _rl_keyseq_timeout*1000 : 0) == 0)
967: return (_rl_dispatch (ANYOTHERKEY, FUNCTION_TO_KEYMAP (map, key)));
968: #endif
969:
970: RESIZE_KEYSEQ_BUFFER ();
971: rl_executing_keyseq[rl_key_sequence_length++] = key;
972: _rl_dispatching_keymap = FUNCTION_TO_KEYMAP (map, key);
973:
974: /* Allocate new context here. Use linked contexts (linked through
975: cxt->ocxt) to simulate recursion */
976: #if defined (READLINE_CALLBACKS)
977: # if defined (VI_MODE)
978: /* If we're redoing a vi mode command and we know there is a shadowed
979: function corresponding to this key, just call it -- all the redoable
980: vi mode commands already have all the input they need, and rl_vi_redo
981: assumes that one call to rl_dispatch is sufficient to complete the
982: command. */
983: if (_rl_vi_redoing && RL_ISSTATE (RL_STATE_CALLBACK) &&
984: map[ANYOTHERKEY].function != 0)
985: return (_rl_subseq_result (-2, map, key, got_subseq));
986: # endif
987: if (RL_ISSTATE (RL_STATE_CALLBACK))
988: {
989: /* Return 0 only the first time, to indicate success to
990: _rl_callback_read_char. The rest of the time, we're called
991: from _rl_dispatch_callback, so we return -3 to indicate
992: special handling is necessary. */
993: r = RL_ISSTATE (RL_STATE_MULTIKEY) ? -3 : 0;
994: cxt = _rl_keyseq_cxt_alloc ();
995:
996: if (got_subseq)
997: cxt->flags |= KSEQ_SUBSEQ;
998: cxt->okey = key;
999: cxt->oldmap = map;
1000: cxt->dmap = _rl_dispatching_keymap;
1001: cxt->subseq_arg = got_subseq || cxt->dmap[ANYOTHERKEY].function;
1002:
1003: RL_SETSTATE (RL_STATE_MULTIKEY);
1004: _rl_kscxt = cxt;
1005:
1006: return r; /* don't indicate immediate success */
1007: }
1008: #endif
1009:
1010: /* Tentative inter-character timeout for potential multi-key
1011: sequences? If no input within timeout, abort sequence and
1012: act as if we got non-matching input. */
1013: /* _rl_keyseq_timeout specified in milliseconds; _rl_input_queued
1014: takes microseconds, so multiply by 1000 */
1015: if (_rl_keyseq_timeout > 0 &&
1016: (RL_ISSTATE (RL_STATE_INPUTPENDING|RL_STATE_MACROINPUT) == 0) &&
1017: _rl_pushed_input_available () == 0 &&
1018: _rl_dispatching_keymap[ANYOTHERKEY].function &&
1019: _rl_input_queued (_rl_keyseq_timeout*1000) == 0)
1020: {
1021: if (rl_key_sequence_length > 0)
1022: rl_executing_keyseq[--rl_key_sequence_length] = '\0';
1023: return (_rl_subseq_result (-2, map, key, got_subseq));
1024: }
1025:
1026: newkey = _rl_subseq_getchar (key);
1027: if (newkey < 0)
1028: {
1029: _rl_abort_internal ();
1030: return -1;
1031: }
1032:
1033: r = _rl_dispatch_subseq (newkey, _rl_dispatching_keymap, got_subseq || map[ANYOTHERKEY].function);
1034: return _rl_subseq_result (r, map, key, got_subseq);
1035: }
1036: else
1037: {
1038: _rl_abort_internal (); /* XXX */
1039: return -1;
1040: }
1041: break;
1042:
1043: case ISMACR:
1044: if (map[key].function != 0)
1045: {
1046: rl_executing_keyseq[rl_key_sequence_length] = '\0';
1047: macro = savestring ((char *)map[key].function);
1048: _rl_with_macro_input (macro);
1049: return 0;
1050: }
1051: break;
1052: }
1053:
1054: #if defined (VI_MODE)
1055: if (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap &&
1056: key != ANYOTHERKEY &&
1057: _rl_dispatching_keymap == vi_movement_keymap &&
1058: _rl_vi_textmod_command (key))
1059: _rl_vi_set_last (key, rl_numeric_arg, rl_arg_sign);
1060: #endif
1061:
1062: return (r);
1063: }
1064:
1065: static int
1066: _rl_subseq_result (int r, Keymap map, int key, int got_subseq)
1067: {
1068: Keymap m;
1069: int type, nt;
1070: rl_command_func_t *func, *nf;
1071:
1072: if (r == -2)
1073: /* We didn't match anything, and the keymap we're indexed into
1074: shadowed a function previously bound to that prefix. Call
1075: the function. The recursive call to _rl_dispatch_subseq has
1076: already taken care of pushing any necessary input back onto
1077: the input queue with _rl_unget_char. */
1078: {
1079: m = _rl_dispatching_keymap;
1080: type = m[ANYOTHERKEY].type;
1081: func = m[ANYOTHERKEY].function;
1082: if (type == ISFUNC && func == rl_do_lowercase_version)
1083: r = _rl_dispatch (_rl_to_lower ((unsigned char)key), map);
1084: else if (type == ISFUNC)
1085: {
1086: /* If we shadowed a function, whatever it is, we somehow need a
1087: keymap with map[key].func == shadowed-function.
1088: Let's use this one. Then we can dispatch using the original
1089: key, since there are commands (e.g., in vi mode) for which it
1090: matters. */
1091: nt = m[key].type;
1092: nf = m[key].function;
1093:
1094: m[key].type = type;
1095: m[key].function = func;
1096: /* Don't change _rl_dispatching_keymap, set it here */
1097: _rl_dispatching_keymap = map; /* previous map */
1098: r = _rl_dispatch_subseq (key, m, 0);
1099: m[key].type = nt;
1100: m[key].function = nf;
1101: }
1102: else
1103: /* We probably shadowed a keymap, so keep going. */
1104: r = _rl_dispatch (ANYOTHERKEY, m);
1105: }
1106: else if (r < 0 && map[ANYOTHERKEY].function)
1107: {
1108: /* We didn't match (r is probably -1), so return something to
1109: tell the caller that it should try ANYOTHERKEY for an
1110: overridden function. */
1111: if (RL_ISSTATE (RL_STATE_MACROINPUT))
1112: _rl_prev_macro_key ();
1113: else
1114: _rl_unget_char (key);
1115: if (rl_key_sequence_length > 0)
1116: rl_executing_keyseq[--rl_key_sequence_length] = '\0';
1117: _rl_dispatching_keymap = map;
1118: return -2;
1119: }
1120: else if (r < 0 && got_subseq) /* XXX */
1121: {
1122: /* OK, back up the chain. */
1123: if (RL_ISSTATE (RL_STATE_MACROINPUT))
1124: _rl_prev_macro_key ();
1125: else
1126: _rl_unget_char (key);
1127: if (rl_key_sequence_length > 0)
1128: rl_executing_keyseq[--rl_key_sequence_length] = '\0';
1129: _rl_dispatching_keymap = map;
1130: return -1;
1131: }
1132:
1133: return r;
1134: }
1135:
1136: /* **************************************************************** */
1137: /* */
1138: /* Initializations */
1139: /* */
1140: /* **************************************************************** */
1141:
1142: /* Initialize readline (and terminal if not already). */
1143: int
1144: rl_initialize (void)
1145: {
1146: /* If we have never been called before, initialize the
1147: terminal and data structures. */
1148: if (rl_initialized == 0)
1149: {
1150: RL_SETSTATE(RL_STATE_INITIALIZING);
1151: readline_initialize_everything ();
1152: RL_UNSETSTATE(RL_STATE_INITIALIZING);
1153: rl_initialized++;
1154: RL_SETSTATE(RL_STATE_INITIALIZED);
1155: }
1156: else
1157: (void)_rl_init_locale (); /* check current locale */
1158:
1159: /* Initialize the current line information. */
1160: _rl_init_line_state ();
1161:
1162: /* We aren't done yet. We haven't even gotten started yet! */
1163: rl_done = 0;
1164: RL_UNSETSTATE(RL_STATE_DONE);
1165:
1166: /* Tell the history routines what is going on. */
1167: _rl_start_using_history ();
1168:
1169: /* Make the display buffer match the state of the line. */
1170: rl_reset_line_state ();
1171:
1172: /* No such function typed yet. */
1173: rl_last_func = (rl_command_func_t *)NULL;
1174:
1175: /* Parsing of key-bindings begins in an enabled state. */
1176: _rl_parsing_conditionalized_out = 0;
1177:
1178: #if defined (VI_MODE)
1179: if (rl_editing_mode == vi_mode)
1180: _rl_vi_initialize_line ();
1181: #endif
1182:
1183: /* Each line starts in insert mode (the default). */
1184: _rl_set_insert_mode (RL_IM_DEFAULT, 1);
1185:
1186: return 0;
1187: }
1188:
1189: #if 0
1190: #if defined (__EMX__)
1191: static void
1192: _emx_build_environ (void)
1193: {
1194: TIB *tibp;
1195: PIB *pibp;
1196: char *t, **tp;
1197: int c;
1198:
1199: DosGetInfoBlocks (&tibp, &pibp);
1200: t = pibp->pib_pchenv;
1201: for (c = 1; *t; c++)
1202: t += strlen (t) + 1;
1203: tp = environ = (char **)xmalloc ((c + 1) * sizeof (char *));
1204: t = pibp->pib_pchenv;
1205: while (*t)
1206: {
1207: *tp++ = t;
1208: t += strlen (t) + 1;
1209: }
1210: *tp = 0;
1211: }
1212: #endif /* __EMX__ */
1213: #endif
1214:
1215: /* Initialize the entire state of the world. */
1216: static void
1217: readline_initialize_everything (void)
1218: {
1219: #if 0
1220: #if defined (__EMX__)
1221: if (environ == 0)
1222: _emx_build_environ ();
1223: #endif
1224: #endif
1225:
1226: #if 0
1227: /* Find out if we are running in Emacs -- UNUSED. */
1228: running_in_emacs = sh_get_env_value ("EMACS") != (char *)0;
1229: #endif
1230:
1231: /* Set up input and output if they are not already set up. */
1232: if (!rl_instream)
1233: rl_instream = stdin;
1234:
1235: if (!rl_outstream)
1236: rl_outstream = stdout;
1237:
1238: /* Bind _rl_in_stream and _rl_out_stream immediately. These values
1239: may change, but they may also be used before readline_internal ()
1240: is called. */
1241: _rl_in_stream = rl_instream;
1242: _rl_out_stream = rl_outstream;
1243:
1244: /* Allocate data structures. */
1245: if (rl_line_buffer == 0)
1246: rl_line_buffer = (char *)xmalloc (rl_line_buffer_len = DEFAULT_BUFFER_SIZE);
1247:
1248: /* Initialize the terminal interface. */
1249: if (rl_terminal_name == 0)
1250: rl_terminal_name = sh_get_env_value ("TERM");
1251: _rl_init_terminal_io (rl_terminal_name);
1252:
1253: /* Bind tty characters to readline functions. */
1254: readline_default_bindings ();
1255:
1256: /* Initialize the function names. */
1257: rl_initialize_funmap ();
1258:
1259: /* Decide whether we should automatically go into eight-bit mode. */
1260: _rl_init_eightbit ();
1261:
1262: /* Read in the init file. */
1263: rl_read_init_file ((char *)NULL);
1264:
1265: /* XXX */
1266: if (_rl_horizontal_scroll_mode && _rl_term_autowrap)
1267: {
1268: _rl_screenwidth--;
1269: _rl_screenchars -= _rl_screenheight;
1270: }
1271:
1272: /* Override the effect of any `set keymap' assignments in the
1273: inputrc file. */
1274: rl_set_keymap_from_edit_mode ();
1275:
1276: /* Try to bind a common arrow key prefix, if not already bound. */
1277: bind_arrow_keys ();
1278:
1279: /* Bind the bracketed paste prefix assuming that the user will enable
1280: it on terminals that support it. */
1281: bind_bracketed_paste_prefix ();
1282:
1283: /* If the completion parser's default word break characters haven't
1284: been set yet, then do so now. */
1285: if (rl_completer_word_break_characters == (char *)NULL)
1286: rl_completer_word_break_characters = (char *)rl_basic_word_break_characters;
1287:
1288: #if defined (COLOR_SUPPORT)
1289: if (_rl_colored_stats || _rl_colored_completion_prefix)
1290: _rl_parse_colors ();
1291: #endif
1292:
1293: rl_executing_keyseq = malloc (_rl_executing_keyseq_size = 16);
1294: if (rl_executing_keyseq)
1295: rl_executing_keyseq[rl_key_sequence_length = 0] = '\0';
1296: }
1297:
1298: /* If this system allows us to look at the values of the regular
1299: input editing characters, then bind them to their readline
1300: equivalents, iff the characters are not bound to keymaps. */
1301: static void
1302: readline_default_bindings (void)
1303: {
1304: if (_rl_bind_stty_chars)
1305: rl_tty_set_default_bindings (_rl_keymap);
1306: }
1307:
1308: /* Reset the default bindings for the terminal special characters we're
1309: interested in back to rl_insert and read the new ones. */
1310: static void
1311: reset_default_bindings (void)
1312: {
1313: if (_rl_bind_stty_chars)
1314: {
1315: rl_tty_unset_default_bindings (_rl_keymap);
1316: rl_tty_set_default_bindings (_rl_keymap);
1317: }
1318: }
1319:
1320: /* Bind some common arrow key sequences in MAP. */
1321: static void
1322: bind_arrow_keys_internal (Keymap map)
1323: {
1324: Keymap xkeymap;
1325:
1326: xkeymap = _rl_keymap;
1327: _rl_keymap = map;
1328:
1329: #if defined (__MSDOS__)
1330: rl_bind_keyseq_if_unbound ("\033[0A", rl_get_previous_history);
1331: rl_bind_keyseq_if_unbound ("\033[0B", rl_backward_char);
1332: rl_bind_keyseq_if_unbound ("\033[0C", rl_forward_char);
1333: rl_bind_keyseq_if_unbound ("\033[0D", rl_get_next_history);
1334: #endif
1335:
1336: rl_bind_keyseq_if_unbound ("\033[A", rl_get_previous_history);
1337: rl_bind_keyseq_if_unbound ("\033[B", rl_get_next_history);
1338: rl_bind_keyseq_if_unbound ("\033[C", rl_forward_char);
1339: rl_bind_keyseq_if_unbound ("\033[D", rl_backward_char);
1340: rl_bind_keyseq_if_unbound ("\033[H", rl_beg_of_line);
1341: rl_bind_keyseq_if_unbound ("\033[F", rl_end_of_line);
1342:
1343: rl_bind_keyseq_if_unbound ("\033OA", rl_get_previous_history);
1344: rl_bind_keyseq_if_unbound ("\033OB", rl_get_next_history);
1345: rl_bind_keyseq_if_unbound ("\033OC", rl_forward_char);
1346: rl_bind_keyseq_if_unbound ("\033OD", rl_backward_char);
1347: rl_bind_keyseq_if_unbound ("\033OH", rl_beg_of_line);
1348: rl_bind_keyseq_if_unbound ("\033OF", rl_end_of_line);
1349:
1350: /* Key bindings for control-arrow keys */
1351: rl_bind_keyseq_if_unbound ("\033[1;5C", rl_forward_word);
1352: rl_bind_keyseq_if_unbound ("\033[1;5D", rl_backward_word);
1353: rl_bind_keyseq_if_unbound ("\033[3;5~", rl_kill_word);
1354:
1355: /* Key bindings for alt-arrow keys */
1356: rl_bind_keyseq_if_unbound ("\033[1;3C", rl_forward_word);
1357: rl_bind_keyseq_if_unbound ("\033[1;3D", rl_backward_word);
1358:
1359: #if defined (__MINGW32__)
1360: rl_bind_keyseq_if_unbound ("\340H", rl_get_previous_history);
1361: rl_bind_keyseq_if_unbound ("\340P", rl_get_next_history);
1362: rl_bind_keyseq_if_unbound ("\340M", rl_forward_char);
1363: rl_bind_keyseq_if_unbound ("\340K", rl_backward_char);
1364: rl_bind_keyseq_if_unbound ("\340G", rl_beg_of_line);
1365: rl_bind_keyseq_if_unbound ("\340O", rl_end_of_line);
1366: rl_bind_keyseq_if_unbound ("\340S", rl_delete);
1367: rl_bind_keyseq_if_unbound ("\340R", rl_overwrite_mode);
1368:
1369: /* These may or may not work because of the embedded NUL. */
1370: rl_bind_keyseq_if_unbound ("\\000H", rl_get_previous_history);
1371: rl_bind_keyseq_if_unbound ("\\000P", rl_get_next_history);
1372: rl_bind_keyseq_if_unbound ("\\000M", rl_forward_char);
1373: rl_bind_keyseq_if_unbound ("\\000K", rl_backward_char);
1374: rl_bind_keyseq_if_unbound ("\\000G", rl_beg_of_line);
1375: rl_bind_keyseq_if_unbound ("\\000O", rl_end_of_line);
1376: rl_bind_keyseq_if_unbound ("\\000S", rl_delete);
1377: rl_bind_keyseq_if_unbound ("\\000R", rl_overwrite_mode);
1378: #endif
1379:
1380: _rl_keymap = xkeymap;
1381: }
1382:
1383: /* Try and bind the common arrow key prefixes after giving termcap and
1384: the inputrc file a chance to bind them and create `real' keymaps
1385: for the arrow key prefix. */
1386: static void
1387: bind_arrow_keys (void)
1388: {
1389: bind_arrow_keys_internal (emacs_standard_keymap);
1390:
1391: #if defined (VI_MODE)
1392: bind_arrow_keys_internal (vi_movement_keymap);
1393: /* Unbind vi_movement_keymap[ESC] to allow users to repeatedly hit ESC
1394: in vi command mode while still allowing the arrow keys to work. */
1395: if (vi_movement_keymap[ESC].type == ISKMAP)
1396: rl_bind_keyseq_in_map ("\033", (rl_command_func_t *)NULL, vi_movement_keymap);
1397: bind_arrow_keys_internal (vi_insertion_keymap);
1398: #endif
1399: }
1400:
1401: static void
1402: bind_bracketed_paste_prefix (void)
1403: {
1404: Keymap xkeymap;
1405:
1406: xkeymap = _rl_keymap;
1407:
1408: _rl_keymap = emacs_standard_keymap;
1409: rl_bind_keyseq_if_unbound (BRACK_PASTE_PREF, rl_bracketed_paste_begin);
1410:
1411: #if defined (VI_MODE)
1412: _rl_keymap = vi_insertion_keymap;
1413: rl_bind_keyseq_if_unbound (BRACK_PASTE_PREF, rl_bracketed_paste_begin);
1414: /* XXX - is there a reason to do this in the vi command keymap? */
1415: #endif
1416:
1417: _rl_keymap = xkeymap;
1418: }
1419:
1420: /* **************************************************************** */
1421: /* */
1422: /* Saving and Restoring Readline's state */
1423: /* */
1424: /* **************************************************************** */
1425:
1426: int
1427: rl_save_state (struct readline_state *sp)
1428: {
1429: if (sp == 0)
1430: return -1;
1431:
1432: sp->point = rl_point;
1433: sp->end = rl_end;
1434: sp->mark = rl_mark;
1435: sp->buffer = rl_line_buffer;
1436: sp->buflen = rl_line_buffer_len;
1437: sp->ul = rl_undo_list;
1438: sp->prompt = rl_prompt;
1439:
1440: sp->rlstate = rl_readline_state;
1441: sp->done = rl_done;
1442: sp->kmap = _rl_keymap;
1443:
1444: sp->lastfunc = rl_last_func;
1445: sp->insmode = rl_insert_mode;
1446: sp->edmode = rl_editing_mode;
1447: sp->kseq = rl_executing_keyseq;
1448: sp->kseqlen = rl_key_sequence_length;
1449: sp->inf = rl_instream;
1450: sp->outf = rl_outstream;
1451: sp->pendingin = rl_pending_input;
1452: sp->macro = rl_executing_macro;
1453:
1454: sp->catchsigs = rl_catch_signals;
1455: sp->catchsigwinch = rl_catch_sigwinch;
1456:
1457: sp->entryfunc = rl_completion_entry_function;
1458: sp->menuentryfunc = rl_menu_completion_entry_function;
1459: sp->ignorefunc = rl_ignore_some_completions_function;
1460: sp->attemptfunc = rl_attempted_completion_function;
1461: sp->wordbreakchars = rl_completer_word_break_characters;
1462:
1463: return (0);
1464: }
1465:
1466: int
1467: rl_restore_state (struct readline_state *sp)
1468: {
1469: if (sp == 0)
1470: return -1;
1471:
1472: rl_point = sp->point;
1473: rl_end = sp->end;
1474: rl_mark = sp->mark;
1475: the_line = rl_line_buffer = sp->buffer;
1476: rl_line_buffer_len = sp->buflen;
1477: rl_undo_list = sp->ul;
1478: rl_prompt = sp->prompt;
1479:
1480: rl_readline_state = sp->rlstate;
1481: rl_done = sp->done;
1482: _rl_keymap = sp->kmap;
1483:
1484: rl_last_func = sp->lastfunc;
1485: rl_insert_mode = sp->insmode;
1486: rl_editing_mode = sp->edmode;
1487: rl_executing_keyseq = sp->kseq;
1488: rl_key_sequence_length = sp->kseqlen;
1489: rl_instream = sp->inf;
1490: rl_outstream = sp->outf;
1491: rl_pending_input = sp->pendingin;
1492: rl_executing_macro = sp->macro;
1493:
1494: rl_catch_signals = sp->catchsigs;
1495: rl_catch_sigwinch = sp->catchsigwinch;
1496:
1497: rl_completion_entry_function = sp->entryfunc;
1498: rl_menu_completion_entry_function = sp->menuentryfunc;
1499: rl_ignore_some_completions_function = sp->ignorefunc;
1500: rl_attempted_completion_function = sp->attemptfunc;
1501: rl_completer_word_break_characters = sp->wordbreakchars;
1502:
1503: rl_deactivate_mark ();
1504:
1505: return (0);
1506: }
1507:
1508: /* Functions to manage the string that is the current key sequence. */
1509:
1510: void
1511: _rl_init_executing_keyseq (void)
1512: {
1513: rl_executing_keyseq[rl_key_sequence_length = 0] = '\0';
1514: }
1515:
1516: void
1517: _rl_term_executing_keyseq (void)
1518: {
1519: rl_executing_keyseq[rl_key_sequence_length] = '\0';
1520: }
1521:
1522: void
1523: _rl_end_executing_keyseq (void)
1524: {
1525: if (rl_key_sequence_length > 0)
1526: rl_executing_keyseq[--rl_key_sequence_length] = '\0';
1527: }
1528:
1529: void
1530: _rl_add_executing_keyseq (int key)
1531: {
1532: RESIZE_KEYSEQ_BUFFER ();
1533: rl_executing_keyseq[rl_key_sequence_length++] = key;
1534: }
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to readline.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / readline