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- Committer: Bazaar Package Importer
- Author(s): Junichi Uekawa
- Date: 2008-09-26 09:58:52 UTC
- mfrom: (1.1.6 upstream)
- Revision ID: james.westby@ubuntu.com-20080926095852-k3v9ewhmxpaltusw
Tags: 2.5.2-3
yodl 2.13.1 removed --unique-output option. Remove --unique-output
accordingly.
accordingly.
- files added:
- Documentation/doxygen_pages.html
- manual-tests
- readline-4.0
- readline-4.0/examples
- readline-4.0/shlib
- readline-4.0/support
- testsuite
- files removed:
- Documentation/ecalength_manpage.man
- files modified:
- AUTHORS
added
removed
readline-4.0/readline.c
1
/* readline.c -- a general facility for reading lines of input
2
with emacs style editing and completion. */
3
4
/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
5
6
This file is part of the GNU Readline Library, a library for
7
reading lines of text with interactive input and history editing.
8
9
The GNU Readline Library is free software; you can redistribute it
10
and/or modify it under the terms of the GNU General Public License
11
as published by the Free Software Foundation; either version 1, or
12
(at your option) any later version.
13
14
The GNU Readline Library is distributed in the hope that it will be
15
useful, but WITHOUT ANY WARRANTY; without even the implied warranty
16
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17
GNU General Public License for more details.
18
19
The GNU General Public License is often shipped with GNU software, and
20
is generally kept in a file called COPYING or LICENSE. If you do not
21
have a copy of the license, write to the Free Software Foundation,
22
675 Mass Ave, Cambridge, MA 02139, USA. */
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 <signal.h>
51
#include <stdio.h>
52
#include "posixjmp.h"
53
54
/* System-specific feature definitions and include files. */
55
#include "rldefs.h"
56
57
#if defined (__EMX__)
58
# define INCL_DOSPROCESS
59
# include <os2.h>
60
#endif /* __EMX__ */
61
62
/* Some standard library routines. */
63
#include "readline.h"
64
#include "history.h"
65
66
#ifndef RL_LIBRARY_VERSION
67
# define RL_LIBRARY_VERSION "4.0"
68
#endif
69
70
/* Evaluates its arguments multiple times. */
71
#define SWAP(s, e) do { int t; t = s; s = e; e = t; } while (0)
72
73
/* NOTE: Functions and variables prefixed with `_rl_' are
74
pseudo-global: they are global so they can be shared
75
between files in the readline library, but are not intended
76
to be visible to readline callers. */
77
78
/* Variables and functions imported from terminal.c */
79
extern int _rl_init_terminal_io ();
80
extern void _rl_enable_meta_key ();
81
#ifdef _MINIX
82
extern void _rl_output_character_function ();
83
#else
84
extern int _rl_output_character_function ();
85
#endif
86
87
extern int _rl_enable_meta;
88
extern int _rl_term_autowrap;
89
extern int screenwidth, screenheight, screenchars;
90
91
/* Variables and functions imported from rltty.c. */
92
extern void rl_prep_terminal (), rl_deprep_terminal ();
93
extern void rltty_set_default_bindings ();
94
95
/* Functions imported from util.c. */
96
extern void _rl_abort_internal ();
97
extern void rl_extend_line_buffer ();
98
extern int alphabetic ();
99
100
/* Functions imported from bind.c. */
101
extern void _rl_bind_if_unbound ();
102
103
/* Functions imported from input.c. */
104
extern int _rl_any_typein ();
105
extern void _rl_insert_typein ();
106
extern int rl_read_key ();
107
108
/* Functions imported from nls.c */
109
extern int _rl_init_eightbit ();
110
111
/* Functions imported from shell.c */
112
extern char *get_env_value ();
113
114
/* External redisplay functions and variables from display.c */
115
extern void _rl_move_vert ();
116
extern void _rl_update_final ();
117
extern void _rl_clear_to_eol ();
118
extern void _rl_clear_screen ();
119
extern void _rl_erase_entire_line ();
120
121
extern void _rl_erase_at_end_of_line ();
122
extern void _rl_move_cursor_relative ();
123
124
extern int _rl_vis_botlin;
125
extern int _rl_last_c_pos;
126
extern int _rl_horizontal_scroll_mode;
127
extern int rl_display_fixed;
128
extern int _rl_suppress_redisplay;
129
extern char *rl_display_prompt;
130
131
/* Variables imported from complete.c. */
132
extern char *rl_completer_word_break_characters;
133
extern char *rl_basic_word_break_characters;
134
extern int rl_completion_query_items;
135
extern int rl_complete_with_tilde_expansion;
136
137
/* Variables and functions from macro.c. */
138
extern void _rl_add_macro_char ();
139
extern void _rl_with_macro_input ();
140
extern int _rl_next_macro_key ();
141
extern int _rl_defining_kbd_macro;
142
143
#if defined (VI_MODE)
144
/* Functions imported from vi_mode.c. */
145
extern void _rl_vi_set_last ();
146
extern void _rl_vi_reset_last ();
147
extern void _rl_vi_done_inserting ();
148
extern int _rl_vi_textmod_command ();
149
extern void _rl_vi_initialize_line ();
150
#endif /* VI_MODE */
151
152
extern UNDO_LIST *rl_undo_list;
153
extern int _rl_doing_an_undo;
154
155
/* Forward declarations used in this file. */
156
void _rl_free_history_entry ();
157
158
int _rl_dispatch ();
159
int _rl_init_argument ();
160
161
static char *readline_internal ();
162
static void readline_initialize_everything ();
163
static void start_using_history ();
164
static void bind_arrow_keys ();
165
166
#if !defined (__GO32__)
167
static void readline_default_bindings ();
168
#endif /* !__GO32__ */
169
170
#if defined (__GO32__)
171
# include <go32.h>
172
# include <pc.h>
173
# undef HANDLE_SIGNALS
174
#endif /* __GO32__ */
175
176
extern char *xmalloc (), *xrealloc ();
177
178
/* **************************************************************** */
179
/* */
180
/* Line editing input utility */
181
/* */
182
/* **************************************************************** */
183
184
char *rl_library_version = RL_LIBRARY_VERSION;
185
186
/* A pointer to the keymap that is currently in use.
187
By default, it is the standard emacs keymap. */
188
Keymap _rl_keymap = emacs_standard_keymap;
189
190
/* The current style of editing. */
191
int rl_editing_mode = emacs_mode;
192
193
/* Non-zero if we called this function from _rl_dispatch(). It's present
194
so functions can find out whether they were called from a key binding
195
or directly from an application. */
196
int rl_dispatching;
197
198
/* Non-zero if the previous command was a kill command. */
199
int _rl_last_command_was_kill = 0;
200
201
/* The current value of the numeric argument specified by the user. */
202
int rl_numeric_arg = 1;
203
204
/* Non-zero if an argument was typed. */
205
int rl_explicit_arg = 0;
206
207
/* Temporary value used while generating the argument. */
208
int rl_arg_sign = 1;
209
210
/* Non-zero means we have been called at least once before. */
211
static int rl_initialized;
212
213
/* If non-zero, this program is running in an EMACS buffer. */
214
static int running_in_emacs;
215
216
/* The current offset in the current input line. */
217
int rl_point;
218
219
/* Mark in the current input line. */
220
int rl_mark;
221
222
/* Length of the current input line. */
223
int rl_end;
224
225
/* Make this non-zero to return the current input_line. */
226
int rl_done;
227
228
/* The last function executed by readline. */
229
Function *rl_last_func = (Function *)NULL;
230
231
/* Top level environment for readline_internal (). */
232
procenv_t readline_top_level;
233
234
/* The streams we interact with. */
235
FILE *_rl_in_stream, *_rl_out_stream;
236
237
/* The names of the streams that we do input and output to. */
238
FILE *rl_instream = (FILE *)NULL;
239
FILE *rl_outstream = (FILE *)NULL;
240
241
/* Non-zero means echo characters as they are read. */
242
int readline_echoing_p = 1;
243
244
/* Current prompt. */
245
char *rl_prompt;
246
int rl_visible_prompt_length = 0;
247
248
/* The number of characters read in order to type this complete command. */
249
int rl_key_sequence_length = 0;
250
251
/* If non-zero, then this is the address of a function to call just
252
before readline_internal_setup () prints the first prompt. */
253
Function *rl_startup_hook = (Function *)NULL;
254
255
/* If non-zero, this is the address of a function to call just before
256
readline_internal_setup () returns and readline_internal starts
257
reading input characters. */
258
Function *rl_pre_input_hook = (Function *)NULL;
259
260
/* What we use internally. You should always refer to RL_LINE_BUFFER. */
261
static char *the_line;
262
263
/* The character that can generate an EOF. Really read from
264
the terminal driver... just defaulted here. */
265
int _rl_eof_char = CTRL ('D');
266
267
/* Non-zero makes this the next keystroke to read. */
268
int rl_pending_input = 0;
269
270
/* Pointer to a useful terminal name. */
271
char *rl_terminal_name = (char *)NULL;
272
273
/* Non-zero means to always use horizontal scrolling in line display. */
274
int _rl_horizontal_scroll_mode = 0;
275
276
/* Non-zero means to display an asterisk at the starts of history lines
277
which have been modified. */
278
int _rl_mark_modified_lines = 0;
279
280
/* The style of `bell' notification preferred. This can be set to NO_BELL,
281
AUDIBLE_BELL, or VISIBLE_BELL. */
282
int _rl_bell_preference = AUDIBLE_BELL;
283
284
/* String inserted into the line by rl_insert_comment (). */
285
char *_rl_comment_begin;
286
287
/* Keymap holding the function currently being executed. */
288
Keymap rl_executing_keymap;
289
290
/* Non-zero means to erase entire line, including prompt, on empty input lines. */
291
int rl_erase_empty_line = 0;
292
293
/* Line buffer and maintenence. */
294
char *rl_line_buffer = (char *)NULL;
295
int rl_line_buffer_len = 0;
296
297
/* Forward declarations used by the display and termcap code. */
298
299
/* **************************************************************** */
300
/* */
301
/* `Forward' declarations */
302
/* */
303
/* **************************************************************** */
304
305
/* Non-zero means do not parse any lines other than comments and
306
parser directives. */
307
unsigned char _rl_parsing_conditionalized_out = 0;
308
309
/* Non-zero means to convert characters with the meta bit set to
310
escape-prefixed characters so we can indirect through
311
emacs_meta_keymap or vi_escape_keymap. */
312
int _rl_convert_meta_chars_to_ascii = 1;
313
314
/* Non-zero means to output characters with the meta bit set directly
315
rather than as a meta-prefixed escape sequence. */
316
int _rl_output_meta_chars = 0;
317
318
/* **************************************************************** */
319
/* */
320
/* Top Level Functions */
321
/* */
322
/* **************************************************************** */
323
324
/* Non-zero means treat 0200 bit in terminal input as Meta bit. */
325
int _rl_meta_flag = 0; /* Forward declaration */
326
327
/* Read a line of input. Prompt with PROMPT. An empty PROMPT means
328
none. A return value of NULL means that EOF was encountered. */
329
char *
330
readline (prompt)
331
char *prompt;
332
{
333
char *value;
334
335
rl_prompt = prompt;
336
337
/* If we are at EOF return a NULL string. */
338
if (rl_pending_input == EOF)
339
{
340
rl_pending_input = 0;
341
return ((char *)NULL);
342
}
343
344
rl_visible_prompt_length = rl_expand_prompt (rl_prompt);
345
346
rl_initialize ();
347
(*rl_prep_term_function) (_rl_meta_flag);
348
349
#if defined (HANDLE_SIGNALS)
350
rl_set_signals ();
351
#endif
352
353
value = readline_internal ();
354
(*rl_deprep_term_function) ();
355
356
#if defined (HANDLE_SIGNALS)
357
rl_clear_signals ();
358
#endif
359
360
return (value);
361
}
362
363
#if defined (READLINE_CALLBACKS)
364
# define STATIC_CALLBACK
365
#else
366
# define STATIC_CALLBACK static
367
#endif
368
369
STATIC_CALLBACK void
370
readline_internal_setup ()
371
{
372
_rl_in_stream = rl_instream;
373
_rl_out_stream = rl_outstream;
374
375
if (rl_startup_hook)
376
(*rl_startup_hook) ();
377
378
if (readline_echoing_p == 0)
379
{
380
if (rl_prompt)
381
{
382
fprintf (_rl_out_stream, "%s", rl_prompt);
383
fflush (_rl_out_stream);
384
}
385
}
386
else
387
{
388
rl_on_new_line ();
389
(*rl_redisplay_function) ();
390
#if defined (VI_MODE)
391
if (rl_editing_mode == vi_mode)
392
rl_vi_insertion_mode (1, 0);
393
#endif /* VI_MODE */
394
}
395
396
if (rl_pre_input_hook)
397
(*rl_pre_input_hook) ();
398
}
399
400
STATIC_CALLBACK char *
401
readline_internal_teardown (eof)
402
int eof;
403
{
404
char *temp;
405
HIST_ENTRY *entry;
406
407
/* Restore the original of this history line, iff the line that we
408
are editing was originally in the history, AND the line has changed. */
409
entry = current_history ();
410
411
if (entry && rl_undo_list)
412
{
413
temp = savestring (the_line);
414
rl_revert_line (1, 0);
415
entry = replace_history_entry (where_history (), the_line, (histdata_t)NULL);
416
_rl_free_history_entry (entry);
417
418
strcpy (the_line, temp);
419
free (temp);
420
}
421
422
/* At any rate, it is highly likely that this line has an undo list. Get
423
rid of it now. */
424
if (rl_undo_list)
425
free_undo_list ();
426
427
return (eof ? (char *)NULL : savestring (the_line));
428
}
429
430
STATIC_CALLBACK int
431
#if defined (READLINE_CALLBACKS)
432
readline_internal_char ()
433
#else
434
readline_internal_charloop ()
435
#endif
436
{
437
static int lastc, eof_found;
438
int c, code, lk;
439
440
lastc = -1;
441
eof_found = 0;
442
443
#if !defined (READLINE_CALLBACKS)
444
while (rl_done == 0)
445
{
446
#endif
447
lk = _rl_last_command_was_kill;
448
449
code = setjmp (readline_top_level);
450
451
if (code)
452
(*rl_redisplay_function) ();
453
454
if (rl_pending_input == 0)
455
{
456
/* Then initialize the argument and number of keys read. */
457
_rl_init_argument ();
458
rl_key_sequence_length = 0;
459
}
460
461
c = rl_read_key ();
462
463
/* EOF typed to a non-blank line is a <NL>. */
464
if (c == EOF && rl_end)
465
c = NEWLINE;
466
467
/* The character _rl_eof_char typed to blank line, and not as the
468
previous character is interpreted as EOF. */
469
if (((c == _rl_eof_char && lastc != c) || c == EOF) && !rl_end)
470
{
471
#if defined (READLINE_CALLBACKS)
472
return (rl_done = 1);
473
#else
474
eof_found = 1;
475
break;
476
#endif
477
}
478
479
lastc = c;
480
_rl_dispatch (c, _rl_keymap);
481
482
/* If there was no change in _rl_last_command_was_kill, then no kill
483
has taken place. Note that if input is pending we are reading
484
a prefix command, so nothing has changed yet. */
485
if (rl_pending_input == 0 && lk == _rl_last_command_was_kill)
486
_rl_last_command_was_kill = 0;
487
488
#if defined (VI_MODE)
489
/* In vi mode, when you exit insert mode, the cursor moves back
490
over the previous character. We explicitly check for that here. */
491
if (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap)
492
rl_vi_check ();
493
#endif /* VI_MODE */
494
495
if (rl_done == 0)
496
(*rl_redisplay_function) ();
497
498
/* If the application writer has told us to erase the entire line if
499
the only character typed was something bound to rl_newline, do so. */
500
if (rl_erase_empty_line && rl_done && rl_last_func == rl_newline &&
501
rl_point == 0 && rl_end == 0)
502
_rl_erase_entire_line ();
503
504
#if defined (READLINE_CALLBACKS)
505
return 0;
506
#else
507
}
508
509
return (eof_found);
510
#endif
511
}
512
513
#if defined (READLINE_CALLBACKS)
514
static int
515
readline_internal_charloop ()
516
{
517
int eof = 1;
518
519
while (rl_done == 0)
520
eof = readline_internal_char ();
521
return (eof);
522
}
523
#endif /* READLINE_CALLBACKS */
524
525
/* Read a line of input from the global rl_instream, doing output on
526
the global rl_outstream.
527
If rl_prompt is non-null, then that is our prompt. */
528
static char *
529
readline_internal ()
530
{
531
int eof;
532
533
readline_internal_setup ();
534
eof = readline_internal_charloop ();
535
return (readline_internal_teardown (eof));
536
}
537
538
void
539
_rl_init_line_state ()
540
{
541
rl_point = rl_end = 0;
542
the_line = rl_line_buffer;
543
the_line[0] = 0;
544
}
545
546
void
547
_rl_set_the_line ()
548
{
549
the_line = rl_line_buffer;
550
}
551
552
/* Do the command associated with KEY in MAP.
553
If the associated command is really a keymap, then read
554
another key, and dispatch into that map. */
555
int
556
_rl_dispatch (key, map)
557
register int key;
558
Keymap map;
559
{
560
int r, newkey;
561
char *macro;
562
Function *func;
563
564
if (META_CHAR (key) && _rl_convert_meta_chars_to_ascii)
565
{
566
if (map[ESC].type == ISKMAP)
567
{
568
if (_rl_defining_kbd_macro)
569
_rl_add_macro_char (ESC);
570
map = FUNCTION_TO_KEYMAP (map, ESC);
571
key = UNMETA (key);
572
rl_key_sequence_length += 2;
573
return (_rl_dispatch (key, map));
574
}
575
else
576
ding ();
577
return 0;
578
}
579
580
if (_rl_defining_kbd_macro)
581
_rl_add_macro_char (key);
582
583
r = 0;
584
switch (map[key].type)
585
{
586
case ISFUNC:
587
func = map[key].function;
588
if (func != (Function *)NULL)
589
{
590
/* Special case rl_do_lowercase_version (). */
591
if (func == rl_do_lowercase_version)
592
return (_rl_dispatch (_rl_to_lower (key), map));
593
594
rl_executing_keymap = map;
595
596
#if 0
597
_rl_suppress_redisplay = (map[key].function == rl_insert) && _rl_input_available ();
598
#endif
599
600
rl_dispatching = 1;
601
r = (*map[key].function)(rl_numeric_arg * rl_arg_sign, key);
602
rl_dispatching = 0;
603
604
/* If we have input pending, then the last command was a prefix
605
command. Don't change the state of rl_last_func. Otherwise,
606
remember the last command executed in this variable. */
607
if (!rl_pending_input && map[key].function != rl_digit_argument)
608
rl_last_func = map[key].function;
609
}
610
else
611
{
612
_rl_abort_internal ();
613
return -1;
614
}
615
break;
616
617
case ISKMAP:
618
if (map[key].function != (Function *)NULL)
619
{
620
rl_key_sequence_length++;
621
newkey = rl_read_key ();
622
r = _rl_dispatch (newkey, FUNCTION_TO_KEYMAP (map, key));
623
}
624
else
625
{
626
_rl_abort_internal ();
627
return -1;
628
}
629
break;
630
631
case ISMACR:
632
if (map[key].function != (Function *)NULL)
633
{
634
macro = savestring ((char *)map[key].function);
635
_rl_with_macro_input (macro);
636
return 0;
637
}
638
break;
639
}
640
#if defined (VI_MODE)
641
if (rl_editing_mode == vi_mode && _rl_keymap == vi_movement_keymap &&
642
_rl_vi_textmod_command (key))
643
_rl_vi_set_last (key, rl_numeric_arg, rl_arg_sign);
644
#endif
645
return (r);
646
}
647
648
/* **************************************************************** */
649
/* */
650
/* Initializations */
651
/* */
652
/* **************************************************************** */
653
654
/* Initialize readline (and terminal if not already). */
655
int
656
rl_initialize ()
657
{
658
/* If we have never been called before, initialize the
659
terminal and data structures. */
660
if (!rl_initialized)
661
{
662
readline_initialize_everything ();
663
rl_initialized++;
664
}
665
666
/* Initalize the current line information. */
667
_rl_init_line_state ();
668
669
/* We aren't done yet. We haven't even gotten started yet! */
670
rl_done = 0;
671
672
/* Tell the history routines what is going on. */
673
start_using_history ();
674
675
/* Make the display buffer match the state of the line. */
676
rl_reset_line_state ();
677
678
/* No such function typed yet. */
679
rl_last_func = (Function *)NULL;
680
681
/* Parsing of key-bindings begins in an enabled state. */
682
_rl_parsing_conditionalized_out = 0;
683
684
#if defined (VI_MODE)
685
if (rl_editing_mode == vi_mode)
686
_rl_vi_initialize_line ();
687
#endif
688
689
return 0;
690
}
691
692
#if defined (__EMX__)
693
static void
694
_emx_build_environ ()
695
{
696
TIB *tibp;
697
PIB *pibp;
698
char *t, **tp;
699
int c;
700
701
DosGetInfoBlocks (&tibp, &pibp);
702
t = pibp->pib_pchenv;
703
for (c = 1; *t; c++)
704
t += strlen (t) + 1;
705
tp = environ = (char **)xmalloc ((c + 1) * sizeof (char *));
706
t = pibp->pib_pchenv;
707
while (*t)
708
{
709
*tp++ = t;
710
t += strlen (t) + 1;
711
}
712
*tp = 0;
713
}
714
#endif /* __EMX__ */
715
716
/* Initialize the entire state of the world. */
717
static void
718
readline_initialize_everything ()
719
{
720
#if defined (__EMX__)
721
if (environ == 0)
722
_emx_build_environ ();
723
#endif
724
725
/* Find out if we are running in Emacs. */
726
running_in_emacs = get_env_value ("EMACS") != (char *)0;
727
728
/* Set up input and output if they are not already set up. */
729
if (!rl_instream)
730
rl_instream = stdin;
731
732
if (!rl_outstream)
733
rl_outstream = stdout;
734
735
/* Bind _rl_in_stream and _rl_out_stream immediately. These values
736
may change, but they may also be used before readline_internal ()
737
is called. */
738
_rl_in_stream = rl_instream;
739
_rl_out_stream = rl_outstream;
740
741
/* Allocate data structures. */
742
if (rl_line_buffer == 0)
743
rl_line_buffer = xmalloc (rl_line_buffer_len = DEFAULT_BUFFER_SIZE);
744
745
/* Initialize the terminal interface. */
746
_rl_init_terminal_io ((char *)NULL);
747
748
#if !defined (__GO32__)
749
/* Bind tty characters to readline functions. */
750
readline_default_bindings ();
751
#endif /* !__GO32__ */
752
753
/* Initialize the function names. */
754
rl_initialize_funmap ();
755
756
/* Decide whether we should automatically go into eight-bit mode. */
757
_rl_init_eightbit ();
758
759
/* Read in the init file. */
760
rl_read_init_file ((char *)NULL);
761
762
/* XXX */
763
if (_rl_horizontal_scroll_mode && _rl_term_autowrap)
764
{
765
screenwidth--;
766
screenchars -= screenheight;
767
}
768
769
/* Override the effect of any `set keymap' assignments in the
770
inputrc file. */
771
rl_set_keymap_from_edit_mode ();
772
773
/* Try to bind a common arrow key prefix, if not already bound. */
774
bind_arrow_keys ();
775
776
/* Enable the meta key, if this terminal has one. */
777
if (_rl_enable_meta)
778
_rl_enable_meta_key ();
779
780
/* If the completion parser's default word break characters haven't
781
been set yet, then do so now. */
782
if (rl_completer_word_break_characters == (char *)NULL)
783
rl_completer_word_break_characters = rl_basic_word_break_characters;
784
}
785
786
/* If this system allows us to look at the values of the regular
787
input editing characters, then bind them to their readline
788
equivalents, iff the characters are not bound to keymaps. */
789
static void
790
readline_default_bindings ()
791
{
792
rltty_set_default_bindings (_rl_keymap);
793
}
794
795
static void
796
bind_arrow_keys_internal ()
797
{
798
Function *f;
799
800
f = rl_function_of_keyseq ("\033[A", _rl_keymap, (int *)NULL);
801
if (!f || f == rl_do_lowercase_version)
802
{
803
_rl_bind_if_unbound ("\033[A", rl_get_previous_history);
804
_rl_bind_if_unbound ("\033[B", rl_get_next_history);
805
_rl_bind_if_unbound ("\033[C", rl_forward);
806
_rl_bind_if_unbound ("\033[D", rl_backward);
807
}
808
809
f = rl_function_of_keyseq ("\033OA", _rl_keymap, (int *)NULL);
810
if (!f || f == rl_do_lowercase_version)
811
{
812
_rl_bind_if_unbound ("\033OA", rl_get_previous_history);
813
_rl_bind_if_unbound ("\033OB", rl_get_next_history);
814
_rl_bind_if_unbound ("\033OC", rl_forward);
815
_rl_bind_if_unbound ("\033OD", rl_backward);
816
}
817
}
818
819
/* Try and bind the common arrow key prefix after giving termcap and
820
the inputrc file a chance to bind them and create `real' keymaps
821
for the arrow key prefix. */
822
static void
823
bind_arrow_keys ()
824
{
825
Keymap xkeymap;
826
827
xkeymap = _rl_keymap;
828
829
_rl_keymap = emacs_standard_keymap;
830
bind_arrow_keys_internal ();
831
832
#if defined (VI_MODE)
833
_rl_keymap = vi_movement_keymap;
834
bind_arrow_keys_internal ();
835
#endif
836
837
_rl_keymap = xkeymap;
838
}
839
840
841
/* **************************************************************** */
842
/* */
843
/* Numeric Arguments */
844
/* */
845
/* **************************************************************** */
846
847
/* Handle C-u style numeric args, as well as M--, and M-digits. */
848
static int
849
rl_digit_loop ()
850
{
851
int key, c, sawminus, sawdigits;
852
853
rl_save_prompt ();
854
855
sawminus = sawdigits = 0;
856
while (1)
857
{
858
if (rl_numeric_arg > 1000000)
859
{
860
sawdigits = rl_explicit_arg = rl_numeric_arg = 0;
861
ding ();
862
rl_restore_prompt ();
863
rl_clear_message ();
864
return 1;
865
}
866
rl_message ("(arg: %d) ", rl_arg_sign * rl_numeric_arg);
867
key = c = rl_read_key ();
868
869
/* If we see a key bound to `universal-argument' after seeing digits,
870
it ends the argument but is otherwise ignored. */
871
if (_rl_keymap[c].type == ISFUNC &&
872
_rl_keymap[c].function == rl_universal_argument)
873
{
874
if (sawdigits == 0)
875
{
876
rl_numeric_arg *= 4;
877
continue;
878
}
879
else
880
{
881
key = rl_read_key ();
882
rl_restore_prompt ();
883
rl_clear_message ();
884
return (_rl_dispatch (key, _rl_keymap));
885
}
886
}
887
888
c = UNMETA (c);
889
890
if (_rl_digit_p (c))
891
{
892
rl_numeric_arg = rl_explicit_arg ? (rl_numeric_arg * 10) + c - '0' : c - '0';
893
sawdigits = rl_explicit_arg = 1;
894
}
895
else if (c == '-' && rl_explicit_arg == 0)
896
{
897
rl_numeric_arg = sawminus = 1;
898
rl_arg_sign = -1;
899
}
900
else
901
{
902
/* Make M-- command equivalent to M--1 command. */
903
if (sawminus && rl_numeric_arg == 1 && rl_explicit_arg == 0)
904
rl_explicit_arg = 1;
905
rl_restore_prompt ();
906
rl_clear_message ();
907
return (_rl_dispatch (key, _rl_keymap));
908
}
909
}
910
911
return 0;
912
}
913
914
/* Add the current digit to the argument in progress. */
915
int
916
rl_digit_argument (ignore, key)
917
int ignore, key;
918
{
919
rl_pending_input = key;
920
return (rl_digit_loop ());
921
}
922
923
/* What to do when you abort reading an argument. */
924
int
925
rl_discard_argument ()
926
{
927
ding ();
928
rl_clear_message ();
929
_rl_init_argument ();
930
return 0;
931
}
932
933
/* Create a default argument. */
934
int
935
_rl_init_argument ()
936
{
937
rl_numeric_arg = rl_arg_sign = 1;
938
rl_explicit_arg = 0;
939
return 0;
940
}
941
942
/* C-u, universal argument. Multiply the current argument by 4.
943
Read a key. If the key has nothing to do with arguments, then
944
dispatch on it. If the key is the abort character then abort. */
945
int
946
rl_universal_argument (count, key)
947
int count, key;
948
{
949
rl_numeric_arg *= 4;
950
return (rl_digit_loop ());
951
}
952
953
/* **************************************************************** */
954
/* */
955
/* Insert and Delete */
956
/* */
957
/* **************************************************************** */
958
959
/* Insert a string of text into the line at point. This is the only
960
way that you should do insertion. rl_insert () calls this
961
function. */
962
int
963
rl_insert_text (string)
964
char *string;
965
{
966
register int i, l = strlen (string);
967
968
if (rl_end + l >= rl_line_buffer_len)
969
rl_extend_line_buffer (rl_end + l);
970
971
for (i = rl_end; i >= rl_point; i--)
972
the_line[i + l] = the_line[i];
973
strncpy (the_line + rl_point, string, l);
974
975
/* Remember how to undo this if we aren't undoing something. */
976
if (!_rl_doing_an_undo)
977
{
978
/* If possible and desirable, concatenate the undos. */
979
if ((l == 1) &&
980
rl_undo_list &&
981
(rl_undo_list->what == UNDO_INSERT) &&
982
(rl_undo_list->end == rl_point) &&
983
(rl_undo_list->end - rl_undo_list->start < 20))
984
rl_undo_list->end++;
985
else
986
rl_add_undo (UNDO_INSERT, rl_point, rl_point + l, (char *)NULL);
987
}
988
rl_point += l;
989
rl_end += l;
990
the_line[rl_end] = '\0';
991
return l;
992
}
993
994
/* Delete the string between FROM and TO. FROM is
995
inclusive, TO is not. */
996
int
997
rl_delete_text (from, to)
998
int from, to;
999
{
1000
register char *text;
1001
register int diff, i;
1002
1003
/* Fix it if the caller is confused. */
1004
if (from > to)
1005
SWAP (from, to);
1006
1007
/* fix boundaries */
1008
if (to > rl_end)
1009
{
1010
to = rl_end;
1011
if (from > to)
1012
from = to;
1013
}
1014
1015
text = rl_copy_text (from, to);
1016
1017
/* Some versions of strncpy() can't handle overlapping arguments. */
1018
diff = to - from;
1019
for (i = from; i < rl_end - diff; i++)
1020
the_line[i] = the_line[i + diff];
1021
1022
/* Remember how to undo this delete. */
1023
if (_rl_doing_an_undo == 0)
1024
rl_add_undo (UNDO_DELETE, from, to, text);
1025
else
1026
free (text);
1027
1028
rl_end -= diff;
1029
the_line[rl_end] = '\0';
1030
return (diff);
1031
}
1032
1033
/* Fix up point so that it is within the line boundaries after killing
1034
text. If FIX_MARK_TOO is non-zero, the mark is forced within line
1035
boundaries also. */
1036
1037
#define _RL_FIX_POINT(x) \
1038
do { \
1039
if (x > rl_end) \
1040
x = rl_end; \
1041
else if (x < 0) \
1042
x = 0; \
1043
} while (0)
1044
1045
void
1046
_rl_fix_point (fix_mark_too)
1047
int fix_mark_too;
1048
{
1049
_RL_FIX_POINT (rl_point);
1050
if (fix_mark_too)
1051
_RL_FIX_POINT (rl_mark);
1052
}
1053
#undef _RL_FIX_POINT
1054
1055
void
1056
_rl_replace_text (text, start, end)
1057
char *text;
1058
int start, end;
1059
{
1060
rl_begin_undo_group ();
1061
rl_delete_text (start, end + 1);
1062
rl_point = start;
1063
rl_insert_text (text);
1064
rl_end_undo_group ();
1065
}
1066
1067
/* **************************************************************** */
1068
/* */
1069
/* Readline character functions */
1070
/* */
1071
/* **************************************************************** */
1072
1073
/* This is not a gap editor, just a stupid line input routine. No hair
1074
is involved in writing any of the functions, and none should be. */
1075
1076
/* Note that:
1077
1078
rl_end is the place in the string that we would place '\0';
1079
i.e., it is always safe to place '\0' there.
1080
1081
rl_point is the place in the string where the cursor is. Sometimes
1082
this is the same as rl_end.
1083
1084
Any command that is called interactively receives two arguments.
1085
The first is a count: the numeric arg pased to this command.
1086
The second is the key which invoked this command.
1087
*/
1088
1089
/* **************************************************************** */
1090
/* */
1091
/* Movement Commands */
1092
/* */
1093
/* **************************************************************** */
1094
1095
/* Note that if you `optimize' the display for these functions, you cannot
1096
use said functions in other functions which do not do optimizing display.
1097
I.e., you will have to update the data base for rl_redisplay, and you
1098
might as well let rl_redisplay do that job. */
1099
1100
/* Move forward COUNT characters. */
1101
int
1102
rl_forward (count, key)
1103
int count, key;
1104
{
1105
if (count < 0)
1106
rl_backward (-count, key);
1107
else if (count > 0)
1108
{
1109
int end = rl_point + count;
1110
#if defined (VI_MODE)
1111
int lend = rl_end - (rl_editing_mode == vi_mode);
1112
#else
1113
int lend = rl_end;
1114
#endif
1115
1116
if (end > lend)
1117
{
1118
rl_point = lend;
1119
ding ();
1120
}
1121
else
1122
rl_point = end;
1123
}
1124
return 0;
1125
}
1126
1127
/* Move backward COUNT characters. */
1128
int
1129
rl_backward (count, key)
1130
int count, key;
1131
{
1132
if (count < 0)
1133
rl_forward (-count, key);
1134
else if (count > 0)
1135
{
1136
if (rl_point < count)
1137
{
1138
rl_point = 0;
1139
ding ();
1140
}
1141
else
1142
rl_point -= count;
1143
}
1144
return 0;
1145
}
1146
1147
/* Move to the beginning of the line. */
1148
int
1149
rl_beg_of_line (count, key)
1150
int count, key;
1151
{
1152
rl_point = 0;
1153
return 0;
1154
}
1155
1156
/* Move to the end of the line. */
1157
int
1158
rl_end_of_line (count, key)
1159
int count, key;
1160
{
1161
rl_point = rl_end;
1162
return 0;
1163
}
1164
1165
/* Move forward a word. We do what Emacs does. */
1166
int
1167
rl_forward_word (count, key)
1168
int count, key;
1169
{
1170
int c;
1171
1172
if (count < 0)
1173
{
1174
rl_backward_word (-count, key);
1175
return 0;
1176
}
1177
1178
while (count)
1179
{
1180
if (rl_point == rl_end)
1181
return 0;
1182
1183
/* If we are not in a word, move forward until we are in one.
1184
Then, move forward until we hit a non-alphabetic character. */
1185
c = the_line[rl_point];
1186
if (alphabetic (c) == 0)
1187
{
1188
while (++rl_point < rl_end)
1189
{
1190
c = the_line[rl_point];
1191
if (alphabetic (c))
1192
break;
1193
}
1194
}
1195
if (rl_point == rl_end)
1196
return 0;
1197
while (++rl_point < rl_end)
1198
{
1199
c = the_line[rl_point];
1200
if (alphabetic (c) == 0)
1201
break;
1202
}
1203
--count;
1204
}
1205
return 0;
1206
}
1207
1208
/* Move backward a word. We do what Emacs does. */
1209
int
1210
rl_backward_word (count, key)
1211
int count, key;
1212
{
1213
int c;
1214
1215
if (count < 0)
1216
{
1217
rl_forward_word (-count, key);
1218
return 0;
1219
}
1220
1221
while (count)
1222
{
1223
if (!rl_point)
1224
return 0;
1225
1226
/* Like rl_forward_word (), except that we look at the characters
1227
just before point. */
1228
1229
c = the_line[rl_point - 1];
1230
if (alphabetic (c) == 0)
1231
{
1232
while (--rl_point)
1233
{
1234
c = the_line[rl_point - 1];
1235
if (alphabetic (c))
1236
break;
1237
}
1238
}
1239
1240
while (rl_point)
1241
{
1242
c = the_line[rl_point - 1];
1243
if (alphabetic (c) == 0)
1244
break;
1245
else
1246
--rl_point;
1247
}
1248
--count;
1249
}
1250
return 0;
1251
}
1252
1253
/* Clear the current line. Numeric argument to C-l does this. */
1254
int
1255
rl_refresh_line (ignore1, ignore2)
1256
int ignore1, ignore2;
1257
{
1258
int curr_line, nleft;
1259
1260
/* Find out whether or not there might be invisible characters in the
1261
editing buffer. */
1262
if (rl_display_prompt == rl_prompt)
1263
nleft = _rl_last_c_pos - screenwidth - rl_visible_prompt_length;
1264
else
1265
nleft = _rl_last_c_pos - screenwidth;
1266
1267
if (nleft > 0)
1268
curr_line = 1 + nleft / screenwidth;
1269
else
1270
curr_line = 0;
1271
1272
_rl_move_vert (curr_line);
1273
_rl_move_cursor_relative (0, the_line); /* XXX is this right */
1274
1275
#if defined (__GO32__)
1276
{
1277
int row, col, width, row_start;
1278
1279
ScreenGetCursor (&row, &col);
1280
width = ScreenCols ();
1281
row_start = ScreenPrimary + (row * width);
1282
memset (row_start + col, 0, (width - col) * 2);
1283
}
1284
#else /* !__GO32__ */
1285
_rl_clear_to_eol (0); /* arg of 0 means to not use spaces */
1286
#endif /* !__GO32__ */
1287
1288
rl_forced_update_display ();
1289
rl_display_fixed = 1;
1290
1291
return 0;
1292
}
1293
1294
/* C-l typed to a line without quoting clears the screen, and then reprints
1295
the prompt and the current input line. Given a numeric arg, redraw only
1296
the current line. */
1297
int
1298
rl_clear_screen (count, key)
1299
int count, key;
1300
{
1301
if (rl_explicit_arg)
1302
{
1303
rl_refresh_line (count, key);
1304
return 0;
1305
}
1306
1307
_rl_clear_screen (); /* calls termcap function to clear screen */
1308
rl_forced_update_display ();
1309
rl_display_fixed = 1;
1310
1311
return 0;
1312
}
1313
1314
int
1315
rl_arrow_keys (count, c)
1316
int count, c;
1317
{
1318
int ch;
1319
1320
ch = rl_read_key ();
1321
1322
switch (_rl_to_upper (ch))
1323
{
1324
case 'A':
1325
rl_get_previous_history (count, ch);
1326
break;
1327
1328
case 'B':
1329
rl_get_next_history (count, ch);
1330
break;
1331
1332
case 'C':
1333
rl_forward (count, ch);
1334
break;
1335
1336
case 'D':
1337
rl_backward (count, ch);
1338
break;
1339
1340
default:
1341
ding ();
1342
}
1343
return 0;
1344
}
1345
1346
1347
/* **************************************************************** */
1348
/* */
1349
/* Text commands */
1350
/* */
1351
/* **************************************************************** */
1352
1353
/* Insert the character C at the current location, moving point forward. */
1354
int
1355
rl_insert (count, c)
1356
int count, c;
1357
{
1358
register int i;
1359
char *string;
1360
1361
if (count <= 0)
1362
return 0;
1363
1364
/* If we can optimize, then do it. But don't let people crash
1365
readline because of extra large arguments. */
1366
if (count > 1 && count <= 1024)
1367
{
1368
string = xmalloc (1 + count);
1369
1370
for (i = 0; i < count; i++)
1371
string[i] = c;
1372
1373
string[i] = '\0';
1374
rl_insert_text (string);
1375
free (string);
1376
1377
return 0;
1378
}
1379
1380
if (count > 1024)
1381
{
1382
int decreaser;
1383
char str[1024+1];
1384
1385
for (i = 0; i < 1024; i++)
1386
str[i] = c;
1387
1388
while (count)
1389
{
1390
decreaser = (count > 1024 ? 1024 : count);
1391
str[decreaser] = '\0';
1392
rl_insert_text (str);
1393
count -= decreaser;
1394
}
1395
1396
return 0;
1397
}
1398
1399
/* We are inserting a single character.
1400
If there is pending input, then make a string of all of the
1401
pending characters that are bound to rl_insert, and insert
1402
them all. */
1403
if (_rl_any_typein ())
1404
_rl_insert_typein (c);
1405
else
1406
{
1407
/* Inserting a single character. */
1408
char str[2];
1409
1410
str[1] = '\0';
1411
str[0] = c;
1412
rl_insert_text (str);
1413
}
1414
return 0;
1415
}
1416
1417
/* Insert the next typed character verbatim. */
1418
int
1419
rl_quoted_insert (count, key)
1420
int count, key;
1421
{
1422
int c;
1423
1424
c = rl_read_key ();
1425
return (rl_insert (count, c));
1426
}
1427
1428
/* Insert a tab character. */
1429
int
1430
rl_tab_insert (count, key)
1431
int count, key;
1432
{
1433
return (rl_insert (count, '\t'));
1434
}
1435
1436
/* What to do when a NEWLINE is pressed. We accept the whole line.
1437
KEY is the key that invoked this command. I guess it could have
1438
meaning in the future. */
1439
int
1440
rl_newline (count, key)
1441
int count, key;
1442
{
1443
rl_done = 1;
1444
1445
#if defined (VI_MODE)
1446
if (rl_editing_mode == vi_mode)
1447
{
1448
_rl_vi_done_inserting ();
1449
_rl_vi_reset_last ();
1450
}
1451
#endif /* VI_MODE */
1452
1453
/* If we've been asked to erase empty lines, suppress the final update,
1454
since _rl_update_final calls crlf(). */
1455
if (rl_erase_empty_line && rl_point == 0 && rl_end == 0)
1456
return 0;
1457
1458
if (readline_echoing_p)
1459
_rl_update_final ();
1460
return 0;
1461
}
1462
1463
/* What to do for some uppercase characters, like meta characters,
1464
and some characters appearing in emacs_ctlx_keymap. This function
1465
is just a stub, you bind keys to it and the code in _rl_dispatch ()
1466
is special cased. */
1467
int
1468
rl_do_lowercase_version (ignore1, ignore2)
1469
int ignore1, ignore2;
1470
{
1471
return 0;
1472
}
1473
1474
/* Rubout the character behind point. */
1475
int
1476
rl_rubout (count, key)
1477
int count, key;
1478
{
1479
if (count < 0)
1480
{
1481
rl_delete (-count, key);
1482
return 0;
1483
}
1484
1485
if (!rl_point)
1486
{
1487
ding ();
1488
return -1;
1489
}
1490
1491
if (count > 1 || rl_explicit_arg)
1492
{
1493
int orig_point = rl_point;
1494
rl_backward (count, key);
1495
rl_kill_text (orig_point, rl_point);
1496
}
1497
else
1498
{
1499
int c = the_line[--rl_point];
1500
rl_delete_text (rl_point, rl_point + 1);
1501
1502
if (rl_point == rl_end && isprint (c) && _rl_last_c_pos)
1503
{
1504
int l;
1505
l = rl_character_len (c, rl_point);
1506
_rl_erase_at_end_of_line (l);
1507
}
1508
}
1509
return 0;
1510
}
1511
1512
/* Delete the character under the cursor. Given a numeric argument,
1513
kill that many characters instead. */
1514
int
1515
rl_delete (count, key)
1516
int count, key;
1517
{
1518
if (count < 0)
1519
return (rl_rubout (-count, key));
1520
1521
if (rl_point == rl_end)
1522
{
1523
ding ();
1524
return -1;
1525
}
1526
1527
if (count > 1 || rl_explicit_arg)
1528
{
1529
int orig_point = rl_point;
1530
rl_forward (count, key);
1531
rl_kill_text (orig_point, rl_point);
1532
rl_point = orig_point;
1533
return 0;
1534
}
1535
else
1536
return (rl_delete_text (rl_point, rl_point + 1));
1537
}
1538
1539
/* Delete the character under the cursor, unless the insertion
1540
point is at the end of the line, in which case the character
1541
behind the cursor is deleted. COUNT is obeyed and may be used
1542
to delete forward or backward that many characters. */
1543
int
1544
rl_rubout_or_delete (count, key)
1545
int count, key;
1546
{
1547
if (rl_end != 0 && rl_point == rl_end)
1548
return (rl_rubout (count, key));
1549
else
1550
return (rl_delete (count, key));
1551
}
1552
1553
/* Delete all spaces and tabs around point. */
1554
int
1555
rl_delete_horizontal_space (count, ignore)
1556
int count, ignore;
1557
{
1558
int start = rl_point;
1559
1560
while (rl_point && whitespace (the_line[rl_point - 1]))
1561
rl_point--;
1562
1563
start = rl_point;
1564
1565
while (rl_point < rl_end && whitespace (the_line[rl_point]))
1566
rl_point++;
1567
1568
if (start != rl_point)
1569
{
1570
rl_delete_text (start, rl_point);
1571
rl_point = start;
1572
}
1573
return 0;
1574
}
1575
1576
/* Like the tcsh editing function delete-char-or-list. The eof character
1577
is caught before this is invoked, so this really does the same thing as
1578
delete-char-or-list-or-eof, as long as it's bound to the eof character. */
1579
int
1580
rl_delete_or_show_completions (count, key)
1581
int count, key;
1582
{
1583
if (rl_end != 0 && rl_point == rl_end)
1584
return (rl_possible_completions (count, key));
1585
else
1586
return (rl_delete (count, key));
1587
}
1588
1589
#ifndef RL_COMMENT_BEGIN_DEFAULT
1590
#define RL_COMMENT_BEGIN_DEFAULT "#"
1591
#endif
1592
1593
/* Turn the current line into a comment in shell history.
1594
A K*rn shell style function. */
1595
int
1596
rl_insert_comment (count, key)
1597
int count, key;
1598
{
1599
rl_beg_of_line (1, key);
1600
rl_insert_text (_rl_comment_begin ? _rl_comment_begin
1601
: RL_COMMENT_BEGIN_DEFAULT);
1602
(*rl_redisplay_function) ();
1603
rl_newline (1, '\n');
1604
return (0);
1605
}
1606
1607
/* **************************************************************** */
1608
/* */
1609
/* Changing Case */
1610
/* */
1611
/* **************************************************************** */
1612
1613
/* The three kinds of things that we know how to do. */
1614
#define UpCase 1
1615
#define DownCase 2
1616
#define CapCase 3
1617
1618
static int rl_change_case ();
1619
1620
/* Uppercase the word at point. */
1621
int
1622
rl_upcase_word (count, key)
1623
int count, key;
1624
{
1625
return (rl_change_case (count, UpCase));
1626
}
1627
1628
/* Lowercase the word at point. */
1629
int
1630
rl_downcase_word (count, key)
1631
int count, key;
1632
{
1633
return (rl_change_case (count, DownCase));
1634
}
1635
1636
/* Upcase the first letter, downcase the rest. */
1637
int
1638
rl_capitalize_word (count, key)
1639
int count, key;
1640
{
1641
return (rl_change_case (count, CapCase));
1642
}
1643
1644
/* The meaty function.
1645
Change the case of COUNT words, performing OP on them.
1646
OP is one of UpCase, DownCase, or CapCase.
1647
If a negative argument is given, leave point where it started,
1648
otherwise, leave it where it moves to. */
1649
static int
1650
rl_change_case (count, op)
1651
int count, op;
1652
{
1653
register int start, end;
1654
int inword, c;
1655
1656
start = rl_point;
1657
rl_forward_word (count, 0);
1658
end = rl_point;
1659
1660
if (count < 0)
1661
SWAP (start, end);
1662
1663
/* We are going to modify some text, so let's prepare to undo it. */
1664
rl_modifying (start, end);
1665
1666
for (inword = 0; start < end; start++)
1667
{
1668
c = the_line[start];
1669
switch (op)
1670
{
1671
case UpCase:
1672
the_line[start] = _rl_to_upper (c);
1673
break;
1674
1675
case DownCase:
1676
the_line[start] = _rl_to_lower (c);
1677
break;
1678
1679
case CapCase:
1680
the_line[start] = (inword == 0) ? _rl_to_upper (c) : _rl_to_lower (c);
1681
inword = alphabetic (the_line[start]);
1682
break;
1683
1684
default:
1685
ding ();
1686
return -1;
1687
}
1688
}
1689
rl_point = end;
1690
return 0;
1691
}
1692
1693
/* **************************************************************** */
1694
/* */
1695
/* Transposition */
1696
/* */
1697
/* **************************************************************** */
1698
1699
/* Transpose the words at point. */
1700
int
1701
rl_transpose_words (count, key)
1702
int count, key;
1703
{
1704
char *word1, *word2;
1705
int w1_beg, w1_end, w2_beg, w2_end;
1706
int orig_point = rl_point;
1707
1708
if (!count)
1709
return 0;
1710
1711
/* Find the two words. */
1712
rl_forward_word (count, key);
1713
w2_end = rl_point;
1714
rl_backward_word (1, key);
1715
w2_beg = rl_point;
1716
rl_backward_word (count, key);
1717
w1_beg = rl_point;
1718
rl_forward_word (1, key);
1719
w1_end = rl_point;
1720
1721
/* Do some check to make sure that there really are two words. */
1722
if ((w1_beg == w2_beg) || (w2_beg < w1_end))
1723
{
1724
ding ();
1725
rl_point = orig_point;
1726
return -1;
1727
}
1728
1729
/* Get the text of the words. */
1730
word1 = rl_copy_text (w1_beg, w1_end);
1731
word2 = rl_copy_text (w2_beg, w2_end);
1732
1733
/* We are about to do many insertions and deletions. Remember them
1734
as one operation. */
1735
rl_begin_undo_group ();
1736
1737
/* Do the stuff at word2 first, so that we don't have to worry
1738
about word1 moving. */
1739
rl_point = w2_beg;
1740
rl_delete_text (w2_beg, w2_end);
1741
rl_insert_text (word1);
1742
1743
rl_point = w1_beg;
1744
rl_delete_text (w1_beg, w1_end);
1745
rl_insert_text (word2);
1746
1747
/* This is exactly correct since the text before this point has not
1748
changed in length. */
1749
rl_point = w2_end;
1750
1751
/* I think that does it. */
1752
rl_end_undo_group ();
1753
free (word1);
1754
free (word2);
1755
1756
return 0;
1757
}
1758
1759
/* Transpose the characters at point. If point is at the end of the line,
1760
then transpose the characters before point. */
1761
int
1762
rl_transpose_chars (count, key)
1763
int count, key;
1764
{
1765
char dummy[2];
1766
1767
if (!count)
1768
return 0;
1769
1770
if (!rl_point || rl_end < 2)
1771
{
1772
ding ();
1773
return -1;
1774
}
1775
1776
rl_begin_undo_group ();
1777
1778
if (rl_point == rl_end)
1779
{
1780
--rl_point;
1781
count = 1;
1782
}
1783
rl_point--;
1784
1785
dummy[0] = the_line[rl_point];
1786
dummy[1] = '\0';
1787
1788
rl_delete_text (rl_point, rl_point + 1);
1789
1790
rl_point += count;
1791
_rl_fix_point (0);
1792
rl_insert_text (dummy);
1793
1794
rl_end_undo_group ();
1795
return 0;
1796
}
1797
1798
/* **************************************************************** */
1799
/* */
1800
/* Character Searching */
1801
/* */
1802
/* **************************************************************** */
1803
1804
int
1805
_rl_char_search_internal (count, dir, schar)
1806
int count, dir, schar;
1807
{
1808
int pos, inc;
1809
1810
pos = rl_point;
1811
inc = (dir < 0) ? -1 : 1;
1812
while (count)
1813
{
1814
if ((dir < 0 && pos <= 0) || (dir > 0 && pos >= rl_end))
1815
{
1816
ding ();
1817
return -1;
1818
}
1819
1820
pos += inc;
1821
do
1822
{
1823
if (rl_line_buffer[pos] == schar)
1824
{
1825
count--;
1826
if (dir < 0)
1827
rl_point = (dir == BTO) ? pos + 1 : pos;
1828
else
1829
rl_point = (dir == FTO) ? pos - 1 : pos;
1830
break;
1831
}
1832
}
1833
while ((dir < 0) ? pos-- : ++pos < rl_end);
1834
}
1835
return (0);
1836
}
1837
1838
/* Search COUNT times for a character read from the current input stream.
1839
FDIR is the direction to search if COUNT is non-negative; otherwise
1840
the search goes in BDIR. */
1841
static int
1842
_rl_char_search (count, fdir, bdir)
1843
int count, fdir, bdir;
1844
{
1845
int c;
1846
1847
c = rl_read_key ();
1848
if (count < 0)
1849
return (_rl_char_search_internal (-count, bdir, c));
1850
else
1851
return (_rl_char_search_internal (count, fdir, c));
1852
}
1853
1854
int
1855
rl_char_search (count, key)
1856
int count, key;
1857
{
1858
return (_rl_char_search (count, FFIND, BFIND));
1859
}
1860
1861
int
1862
rl_backward_char_search (count, key)
1863
int count, key;
1864
{
1865
return (_rl_char_search (count, BFIND, FFIND));
1866
}
1867
1868
/* **************************************************************** */
1869
/* */
1870
/* History Utilities */
1871
/* */
1872
/* **************************************************************** */
1873
1874
/* We already have a history library, and that is what we use to control
1875
the history features of readline. This is our local interface to
1876
the history mechanism. */
1877
1878
/* While we are editing the history, this is the saved
1879
version of the original line. */
1880
HIST_ENTRY *saved_line_for_history = (HIST_ENTRY *)NULL;
1881
1882
/* Set the history pointer back to the last entry in the history. */
1883
static void
1884
start_using_history ()
1885
{
1886
using_history ();
1887
if (saved_line_for_history)
1888
_rl_free_history_entry (saved_line_for_history);
1889
1890
saved_line_for_history = (HIST_ENTRY *)NULL;
1891
}
1892
1893
/* Free the contents (and containing structure) of a HIST_ENTRY. */
1894
void
1895
_rl_free_history_entry (entry)
1896
HIST_ENTRY *entry;
1897
{
1898
if (entry == 0)
1899
return;
1900
if (entry->line)
1901
free (entry->line);
1902
free (entry);
1903
}
1904
1905
/* Perhaps put back the current line if it has changed. */
1906
int
1907
maybe_replace_line ()
1908
{
1909
HIST_ENTRY *temp;
1910
1911
temp = current_history ();
1912
/* If the current line has changed, save the changes. */
1913
if (temp && ((UNDO_LIST *)(temp->data) != rl_undo_list))
1914
{
1915
temp = replace_history_entry (where_history (), the_line, (histdata_t)rl_undo_list);
1916
free (temp->line);
1917
free (temp);
1918
}
1919
return 0;
1920
}
1921
1922
/* Put back the saved_line_for_history if there is one. */
1923
int
1924
maybe_unsave_line ()
1925
{
1926
int line_len;
1927
1928
if (saved_line_for_history)
1929
{
1930
line_len = strlen (saved_line_for_history->line);
1931
1932
if (line_len >= rl_line_buffer_len)
1933
rl_extend_line_buffer (line_len);
1934
1935
strcpy (the_line, saved_line_for_history->line);
1936
rl_undo_list = (UNDO_LIST *)saved_line_for_history->data;
1937
_rl_free_history_entry (saved_line_for_history);
1938
saved_line_for_history = (HIST_ENTRY *)NULL;
1939
rl_end = rl_point = strlen (the_line);
1940
}
1941
else
1942
ding ();
1943
return 0;
1944
}
1945
1946
/* Save the current line in saved_line_for_history. */
1947
int
1948
maybe_save_line ()
1949
{
1950
if (saved_line_for_history == 0)
1951
{
1952
saved_line_for_history = (HIST_ENTRY *)xmalloc (sizeof (HIST_ENTRY));
1953
saved_line_for_history->line = savestring (the_line);
1954
saved_line_for_history->data = (char *)rl_undo_list;
1955
}
1956
return 0;
1957
}
1958
1959
/* **************************************************************** */
1960
/* */
1961
/* History Commands */
1962
/* */
1963
/* **************************************************************** */
1964
1965
/* Meta-< goes to the start of the history. */
1966
int
1967
rl_beginning_of_history (count, key)
1968
int count, key;
1969
{
1970
return (rl_get_previous_history (1 + where_history (), key));
1971
}
1972
1973
/* Meta-> goes to the end of the history. (The current line). */
1974
int
1975
rl_end_of_history (count, key)
1976
int count, key;
1977
{
1978
maybe_replace_line ();
1979
using_history ();
1980
maybe_unsave_line ();
1981
return 0;
1982
}
1983
1984
/* Move down to the next history line. */
1985
int
1986
rl_get_next_history (count, key)
1987
int count, key;
1988
{
1989
HIST_ENTRY *temp;
1990
int line_len;
1991
1992
if (count < 0)
1993
return (rl_get_previous_history (-count, key));
1994
1995
if (count == 0)
1996
return 0;
1997
1998
maybe_replace_line ();
1999
2000
temp = (HIST_ENTRY *)NULL;
2001
while (count)
2002
{
2003
temp = next_history ();
2004
if (!temp)
2005
break;
2006
--count;
2007
}
2008
2009
if (temp == 0)
2010
maybe_unsave_line ();
2011
else
2012
{
2013
line_len = strlen (temp->line);
2014
2015
if (line_len >= rl_line_buffer_len)
2016
rl_extend_line_buffer (line_len);
2017
2018
strcpy (the_line, temp->line);
2019
rl_undo_list = (UNDO_LIST *)temp->data;
2020
rl_end = rl_point = strlen (the_line);
2021
#if defined (VI_MODE)
2022
if (rl_editing_mode == vi_mode)
2023
rl_point = 0;
2024
#endif /* VI_MODE */
2025
}
2026
return 0;
2027
}
2028
2029
/* Get the previous item out of our interactive history, making it the current
2030
line. If there is no previous history, just ding. */
2031
int
2032
rl_get_previous_history (count, key)
2033
int count, key;
2034
{
2035
HIST_ENTRY *old_temp, *temp;
2036
int line_len;
2037
2038
if (count < 0)
2039
return (rl_get_next_history (-count, key));
2040
2041
if (count == 0)
2042
return 0;
2043
2044
/* If we don't have a line saved, then save this one. */
2045
maybe_save_line ();
2046
2047
/* If the current line has changed, save the changes. */
2048
maybe_replace_line ();
2049
2050
temp = old_temp = (HIST_ENTRY *)NULL;
2051
while (count)
2052
{
2053
temp = previous_history ();
2054
if (temp == 0)
2055
break;
2056
2057
old_temp = temp;
2058
--count;
2059
}
2060
2061
/* If there was a large argument, and we moved back to the start of the
2062
history, that is not an error. So use the last value found. */
2063
if (!temp && old_temp)
2064
temp = old_temp;
2065
2066
if (temp == 0)
2067
ding ();
2068
else
2069
{
2070
line_len = strlen (temp->line);
2071
2072
if (line_len >= rl_line_buffer_len)
2073
rl_extend_line_buffer (line_len);
2074
2075
strcpy (the_line, temp->line);
2076
rl_undo_list = (UNDO_LIST *)temp->data;
2077
rl_end = rl_point = line_len;
2078
2079
#if defined (VI_MODE)
2080
if (rl_editing_mode == vi_mode)
2081
rl_point = 0;
2082
#endif /* VI_MODE */
2083
}
2084
return 0;
2085
}
2086
2087
/* **************************************************************** */
2088
/* */
2089
/* The Mark and the Region. */
2090
/* */
2091
/* **************************************************************** */
2092
2093
/* Set the mark at POSITION. */
2094
int
2095
_rl_set_mark_at_pos (position)
2096
int position;
2097
{
2098
if (position > rl_end)
2099
return -1;
2100
2101
rl_mark = position;
2102
return 0;
2103
}
2104
2105
/* A bindable command to set the mark. */
2106
int
2107
rl_set_mark (count, key)
2108
int count, key;
2109
{
2110
return (_rl_set_mark_at_pos (rl_explicit_arg ? count : rl_point));
2111
}
2112
2113
/* Exchange the position of mark and point. */
2114
int
2115
rl_exchange_point_and_mark (count, key)
2116
int count, key;
2117
{
2118
if (rl_mark > rl_end)
2119
rl_mark = -1;
2120
2121
if (rl_mark == -1)
2122
{
2123
ding ();
2124
return -1;
2125
}
2126
else
2127
SWAP (rl_point, rl_mark);
2128
2129
return 0;
2130
}
2131
2132
/* **************************************************************** */
2133
/* */
2134
/* Editing Modes */
2135
/* */
2136
/* **************************************************************** */
2137
/* How to toggle back and forth between editing modes. */
2138
int
2139
rl_vi_editing_mode (count, key)
2140
int count, key;
2141
{
2142
#if defined (VI_MODE)
2143
rl_editing_mode = vi_mode;
2144
rl_vi_insertion_mode (1, key);
2145
#endif /* VI_MODE */
2146
return 0;
2147
}
2148
2149
int
2150
rl_emacs_editing_mode (count, key)
2151
int count, key;
2152
{
2153
rl_editing_mode = emacs_mode;
2154
_rl_keymap = emacs_standard_keymap;
2155
return 0;
2156
}
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Version: 2.0.1