1 /* $OpenBSD: vi.c,v 1.29 2023/03/08 04:43:05 guenther Exp $ */
2 /* $NetBSD: vi.c,v 1.33 2011/02/17 16:44:48 joerg Exp $ */
3
4 /*-
5 * Copyright (c) 1992, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Christos Zoulas of Cornell University.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include "config.h"
37
38 /*
39 * vi.c: Vi mode commands.
40 */
41 #include <sys/wait.h>
42 #include <ctype.h>
43 #include <limits.h>
44 #include <stdlib.h>
45 #include <string.h>
46 #include <unistd.h>
47
48 #include "el.h"
49 #include "common.h"
50 #include "emacs.h"
51 #include "fcns.h"
52 #include "vi.h"
53
54 static el_action_t cv_action(EditLine *, wint_t);
55 static el_action_t cv_paste(EditLine *, wint_t);
56
57 /* cv_action():
58 * Handle vi actions.
59 */
60 static el_action_t
cv_action(EditLine * el,wint_t c)61 cv_action(EditLine *el, wint_t c)
62 {
63
64 if (el->el_chared.c_vcmd.action != NOP) {
65 /* 'cc', 'dd' and (possibly) friends */
66 if (c != (wint_t)el->el_chared.c_vcmd.action)
67 return CC_ERROR;
68
69 if (!(c & YANK))
70 cv_undo(el);
71 cv_yank(el, el->el_line.buffer,
72 (int)(el->el_line.lastchar - el->el_line.buffer));
73 el->el_chared.c_vcmd.action = NOP;
74 el->el_chared.c_vcmd.pos = 0;
75 if (!(c & YANK)) {
76 el->el_line.lastchar = el->el_line.buffer;
77 el->el_line.cursor = el->el_line.buffer;
78 }
79 if (c & INSERT)
80 el->el_map.current = el->el_map.key;
81
82 return CC_REFRESH;
83 }
84 el->el_chared.c_vcmd.pos = el->el_line.cursor;
85 el->el_chared.c_vcmd.action = c;
86 return CC_ARGHACK;
87 }
88
89 /* cv_paste():
90 * Paste previous deletion before or after the cursor
91 */
92 static el_action_t
cv_paste(EditLine * el,wint_t c)93 cv_paste(EditLine *el, wint_t c)
94 {
95 c_kill_t *k = &el->el_chared.c_kill;
96 size_t len = (size_t)(k->last - k->buf);
97
98 if (k->buf == NULL || len == 0)
99 return CC_ERROR;
100 #ifdef DEBUG_PASTE
101 (void) fprintf(el->el_errfile, "Paste: \"%.*ls\"\n", (int)len,
102 k->buf);
103 #endif
104
105 cv_undo(el);
106
107 if (!c && el->el_line.cursor < el->el_line.lastchar)
108 el->el_line.cursor++;
109
110 c_insert(el, (int)len);
111 if (el->el_line.cursor + len > el->el_line.lastchar)
112 return CC_ERROR;
113 (void) memcpy(el->el_line.cursor, k->buf, len *
114 sizeof(*el->el_line.cursor));
115
116 return CC_REFRESH;
117 }
118
119
120 /* vi_paste_next():
121 * Vi paste previous deletion to the right of the cursor
122 * [p]
123 */
124 protected el_action_t
vi_paste_next(EditLine * el,wint_t c)125 vi_paste_next(EditLine *el, wint_t c __attribute__((__unused__)))
126 {
127
128 return cv_paste(el, 0);
129 }
130
131
132 /* vi_paste_prev():
133 * Vi paste previous deletion to the left of the cursor
134 * [P]
135 */
136 protected el_action_t
vi_paste_prev(EditLine * el,wint_t c)137 vi_paste_prev(EditLine *el, wint_t c __attribute__((__unused__)))
138 {
139
140 return cv_paste(el, 1);
141 }
142
143
144 /* vi_prev_big_word():
145 * Vi move to the previous space delimited word
146 * [B]
147 */
148 protected el_action_t
vi_prev_big_word(EditLine * el,wint_t c)149 vi_prev_big_word(EditLine *el, wint_t c __attribute__((__unused__)))
150 {
151
152 if (el->el_line.cursor == el->el_line.buffer)
153 return CC_ERROR;
154
155 el->el_line.cursor = cv_prev_word(el->el_line.cursor,
156 el->el_line.buffer,
157 el->el_state.argument,
158 cv__isWord);
159
160 if (el->el_chared.c_vcmd.action != NOP) {
161 cv_delfini(el);
162 return CC_REFRESH;
163 }
164 return CC_CURSOR;
165 }
166
167
168 /* vi_prev_word():
169 * Vi move to the previous word
170 * [b]
171 */
172 protected el_action_t
vi_prev_word(EditLine * el,wint_t c)173 vi_prev_word(EditLine *el, wint_t c __attribute__((__unused__)))
174 {
175
176 if (el->el_line.cursor == el->el_line.buffer)
177 return CC_ERROR;
178
179 el->el_line.cursor = cv_prev_word(el->el_line.cursor,
180 el->el_line.buffer,
181 el->el_state.argument,
182 cv__isword);
183
184 if (el->el_chared.c_vcmd.action != NOP) {
185 cv_delfini(el);
186 return CC_REFRESH;
187 }
188 return CC_CURSOR;
189 }
190
191
192 /* vi_next_big_word():
193 * Vi move to the next space delimited word
194 * [W]
195 */
196 protected el_action_t
vi_next_big_word(EditLine * el,wint_t c)197 vi_next_big_word(EditLine *el, wint_t c __attribute__((__unused__)))
198 {
199
200 if (el->el_line.cursor >= el->el_line.lastchar - 1)
201 return CC_ERROR;
202
203 el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
204 el->el_line.lastchar, el->el_state.argument, cv__isWord);
205
206 if (el->el_map.type == MAP_VI)
207 if (el->el_chared.c_vcmd.action != NOP) {
208 cv_delfini(el);
209 return CC_REFRESH;
210 }
211 return CC_CURSOR;
212 }
213
214
215 /* vi_next_word():
216 * Vi move to the next word
217 * [w]
218 */
219 protected el_action_t
vi_next_word(EditLine * el,wint_t c)220 vi_next_word(EditLine *el, wint_t c __attribute__((__unused__)))
221 {
222
223 if (el->el_line.cursor >= el->el_line.lastchar - 1)
224 return CC_ERROR;
225
226 el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
227 el->el_line.lastchar, el->el_state.argument, cv__isword);
228
229 if (el->el_map.type == MAP_VI)
230 if (el->el_chared.c_vcmd.action != NOP) {
231 cv_delfini(el);
232 return CC_REFRESH;
233 }
234 return CC_CURSOR;
235 }
236
237
238 /* vi_change_case():
239 * Vi change case of character under the cursor and advance one character
240 * [~]
241 */
242 protected el_action_t
vi_change_case(EditLine * el,wint_t c)243 vi_change_case(EditLine *el, wint_t c)
244 {
245 int i;
246
247 if (el->el_line.cursor >= el->el_line.lastchar)
248 return CC_ERROR;
249 cv_undo(el);
250 for (i = 0; i < el->el_state.argument; i++) {
251
252 c = *el->el_line.cursor;
253 if (iswupper(c))
254 *el->el_line.cursor = towlower(c);
255 else if (iswlower(c))
256 *el->el_line.cursor = towupper(c);
257
258 if (++el->el_line.cursor >= el->el_line.lastchar) {
259 el->el_line.cursor--;
260 re_fastaddc(el);
261 break;
262 }
263 re_fastaddc(el);
264 }
265 return CC_NORM;
266 }
267
268
269 /* vi_change_meta():
270 * Vi change prefix command
271 * [c]
272 */
273 protected el_action_t
vi_change_meta(EditLine * el,wint_t c)274 vi_change_meta(EditLine *el, wint_t c __attribute__((__unused__)))
275 {
276
277 /*
278 * Delete with insert == change: first we delete and then we leave in
279 * insert mode.
280 */
281 return cv_action(el, DELETE | INSERT);
282 }
283
284
285 /* vi_insert_at_bol():
286 * Vi enter insert mode at the beginning of line
287 * [I]
288 */
289 protected el_action_t
vi_insert_at_bol(EditLine * el,wint_t c)290 vi_insert_at_bol(EditLine *el, wint_t c __attribute__((__unused__)))
291 {
292
293 el->el_line.cursor = el->el_line.buffer;
294 cv_undo(el);
295 el->el_map.current = el->el_map.key;
296 return CC_CURSOR;
297 }
298
299
300 /* vi_replace_char():
301 * Vi replace character under the cursor with the next character typed
302 * [r]
303 */
304 protected el_action_t
vi_replace_char(EditLine * el,wint_t c)305 vi_replace_char(EditLine *el, wint_t c __attribute__((__unused__)))
306 {
307
308 if (el->el_line.cursor >= el->el_line.lastchar)
309 return CC_ERROR;
310
311 el->el_map.current = el->el_map.key;
312 el->el_state.inputmode = MODE_REPLACE_1;
313 cv_undo(el);
314 return CC_ARGHACK;
315 }
316
317
318 /* vi_replace_mode():
319 * Vi enter replace mode
320 * [R]
321 */
322 protected el_action_t
vi_replace_mode(EditLine * el,wint_t c)323 vi_replace_mode(EditLine *el, wint_t c __attribute__((__unused__)))
324 {
325
326 el->el_map.current = el->el_map.key;
327 el->el_state.inputmode = MODE_REPLACE;
328 cv_undo(el);
329 return CC_NORM;
330 }
331
332
333 /* vi_substitute_char():
334 * Vi replace character under the cursor and enter insert mode
335 * [s]
336 */
337 protected el_action_t
vi_substitute_char(EditLine * el,wint_t c)338 vi_substitute_char(EditLine *el, wint_t c __attribute__((__unused__)))
339 {
340
341 c_delafter(el, el->el_state.argument);
342 el->el_map.current = el->el_map.key;
343 return CC_REFRESH;
344 }
345
346
347 /* vi_substitute_line():
348 * Vi substitute entire line
349 * [S]
350 */
351 protected el_action_t
vi_substitute_line(EditLine * el,wint_t c)352 vi_substitute_line(EditLine *el, wint_t c __attribute__((__unused__)))
353 {
354
355 cv_undo(el);
356 cv_yank(el, el->el_line.buffer,
357 (int)(el->el_line.lastchar - el->el_line.buffer));
358 (void) em_kill_line(el, 0);
359 el->el_map.current = el->el_map.key;
360 return CC_REFRESH;
361 }
362
363
364 /* vi_change_to_eol():
365 * Vi change to end of line
366 * [C]
367 */
368 protected el_action_t
vi_change_to_eol(EditLine * el,wint_t c)369 vi_change_to_eol(EditLine *el, wint_t c __attribute__((__unused__)))
370 {
371
372 cv_undo(el);
373 cv_yank(el, el->el_line.cursor,
374 (int)(el->el_line.lastchar - el->el_line.cursor));
375 (void) ed_kill_line(el, 0);
376 el->el_map.current = el->el_map.key;
377 return CC_REFRESH;
378 }
379
380
381 /* vi_insert():
382 * Vi enter insert mode
383 * [i]
384 */
385 protected el_action_t
vi_insert(EditLine * el,wint_t c)386 vi_insert(EditLine *el, wint_t c __attribute__((__unused__)))
387 {
388
389 el->el_map.current = el->el_map.key;
390 cv_undo(el);
391 return CC_NORM;
392 }
393
394
395 /* vi_add():
396 * Vi enter insert mode after the cursor
397 * [a]
398 */
399 protected el_action_t
vi_add(EditLine * el,wint_t c)400 vi_add(EditLine *el, wint_t c __attribute__((__unused__)))
401 {
402 int ret;
403
404 el->el_map.current = el->el_map.key;
405 if (el->el_line.cursor < el->el_line.lastchar) {
406 el->el_line.cursor++;
407 if (el->el_line.cursor > el->el_line.lastchar)
408 el->el_line.cursor = el->el_line.lastchar;
409 ret = CC_CURSOR;
410 } else
411 ret = CC_NORM;
412
413 cv_undo(el);
414
415 return ret;
416 }
417
418
419 /* vi_add_at_eol():
420 * Vi enter insert mode at end of line
421 * [A]
422 */
423 protected el_action_t
vi_add_at_eol(EditLine * el,wint_t c)424 vi_add_at_eol(EditLine *el, wint_t c __attribute__((__unused__)))
425 {
426
427 el->el_map.current = el->el_map.key;
428 el->el_line.cursor = el->el_line.lastchar;
429 cv_undo(el);
430 return CC_CURSOR;
431 }
432
433
434 /* vi_delete_meta():
435 * Vi delete prefix command
436 * [d]
437 */
438 protected el_action_t
vi_delete_meta(EditLine * el,wint_t c)439 vi_delete_meta(EditLine *el, wint_t c __attribute__((__unused__)))
440 {
441
442 return cv_action(el, DELETE);
443 }
444
445
446 /* vi_end_big_word():
447 * Vi move to the end of the current space delimited word
448 * [E]
449 */
450 protected el_action_t
vi_end_big_word(EditLine * el,wint_t c)451 vi_end_big_word(EditLine *el, wint_t c __attribute__((__unused__)))
452 {
453
454 if (el->el_line.cursor == el->el_line.lastchar)
455 return CC_ERROR;
456
457 el->el_line.cursor = cv__endword(el->el_line.cursor,
458 el->el_line.lastchar, el->el_state.argument, cv__isWord);
459
460 if (el->el_chared.c_vcmd.action != NOP) {
461 el->el_line.cursor++;
462 cv_delfini(el);
463 return CC_REFRESH;
464 }
465 return CC_CURSOR;
466 }
467
468
469 /* vi_end_word():
470 * Vi move to the end of the current word
471 * [e]
472 */
473 protected el_action_t
vi_end_word(EditLine * el,wint_t c)474 vi_end_word(EditLine *el, wint_t c __attribute__((__unused__)))
475 {
476
477 if (el->el_line.cursor == el->el_line.lastchar)
478 return CC_ERROR;
479
480 el->el_line.cursor = cv__endword(el->el_line.cursor,
481 el->el_line.lastchar, el->el_state.argument, cv__isword);
482
483 if (el->el_chared.c_vcmd.action != NOP) {
484 el->el_line.cursor++;
485 cv_delfini(el);
486 return CC_REFRESH;
487 }
488 return CC_CURSOR;
489 }
490
491
492 /* vi_undo():
493 * Vi undo last change
494 * [u]
495 */
496 protected el_action_t
vi_undo(EditLine * el,wint_t c)497 vi_undo(EditLine *el, wint_t c __attribute__((__unused__)))
498 {
499 c_undo_t un = el->el_chared.c_undo;
500
501 if (un.len == -1)
502 return CC_ERROR;
503
504 /* switch line buffer and undo buffer */
505 el->el_chared.c_undo.buf = el->el_line.buffer;
506 el->el_chared.c_undo.len = el->el_line.lastchar - el->el_line.buffer;
507 el->el_chared.c_undo.cursor =
508 (int)(el->el_line.cursor - el->el_line.buffer);
509 el->el_line.limit = un.buf + (el->el_line.limit - el->el_line.buffer);
510 el->el_line.buffer = un.buf;
511 el->el_line.cursor = un.buf + un.cursor;
512 el->el_line.lastchar = un.buf + un.len;
513
514 return CC_REFRESH;
515 }
516
517
518 /* vi_command_mode():
519 * Vi enter command mode (use alternative key bindings)
520 * [<ESC>]
521 */
522 protected el_action_t
vi_command_mode(EditLine * el,wint_t c)523 vi_command_mode(EditLine *el, wint_t c __attribute__((__unused__)))
524 {
525
526 /* [Esc] cancels pending action */
527 el->el_chared.c_vcmd.action = NOP;
528 el->el_chared.c_vcmd.pos = 0;
529
530 el->el_state.doingarg = 0;
531
532 el->el_state.inputmode = MODE_INSERT;
533 el->el_map.current = el->el_map.alt;
534 #ifdef VI_MOVE
535 if (el->el_line.cursor > el->el_line.buffer)
536 el->el_line.cursor--;
537 #endif
538 return CC_CURSOR;
539 }
540
541
542 /* vi_zero():
543 * Vi move to the beginning of line
544 * [0]
545 */
546 protected el_action_t
vi_zero(EditLine * el,wint_t c)547 vi_zero(EditLine *el, wint_t c)
548 {
549
550 if (el->el_state.doingarg)
551 return ed_argument_digit(el, c);
552
553 el->el_line.cursor = el->el_line.buffer;
554 if (el->el_chared.c_vcmd.action != NOP) {
555 cv_delfini(el);
556 return CC_REFRESH;
557 }
558 return CC_CURSOR;
559 }
560
561
562 /* vi_delete_prev_char():
563 * Vi move to previous character (backspace)
564 * [^H] in insert mode only
565 */
566 protected el_action_t
vi_delete_prev_char(EditLine * el,wint_t c)567 vi_delete_prev_char(EditLine *el, wint_t c __attribute__((__unused__)))
568 {
569
570 if (el->el_line.cursor <= el->el_line.buffer)
571 return CC_ERROR;
572
573 c_delbefore1(el);
574 el->el_line.cursor--;
575 return CC_REFRESH;
576 }
577
578
579 /* vi_list_or_eof():
580 * Vi list choices for completion or indicate end of file if empty line
581 * [^D]
582 */
583 protected el_action_t
vi_list_or_eof(EditLine * el,wint_t c)584 vi_list_or_eof(EditLine *el, wint_t c)
585 {
586
587 if (el->el_line.cursor == el->el_line.lastchar) {
588 if (el->el_line.cursor == el->el_line.buffer) {
589 terminal_writec(el, c); /* then do a EOF */
590 return CC_EOF;
591 } else {
592 /*
593 * Here we could list completions, but it is an
594 * error right now
595 */
596 terminal_beep(el);
597 return CC_ERROR;
598 }
599 } else {
600 #ifdef notyet
601 re_goto_bottom(el);
602 *el->el_line.lastchar = '\0'; /* just in case */
603 return CC_LIST_CHOICES;
604 #else
605 /*
606 * Just complain for now.
607 */
608 terminal_beep(el);
609 return CC_ERROR;
610 #endif
611 }
612 }
613
614
615 /* vi_kill_line_prev():
616 * Vi cut from beginning of line to cursor
617 * [^U]
618 */
619 protected el_action_t
vi_kill_line_prev(EditLine * el,wint_t c)620 vi_kill_line_prev(EditLine *el, wint_t c __attribute__((__unused__)))
621 {
622 wchar_t *kp, *cp;
623
624 cp = el->el_line.buffer;
625 kp = el->el_chared.c_kill.buf;
626 while (cp < el->el_line.cursor)
627 *kp++ = *cp++; /* copy it */
628 el->el_chared.c_kill.last = kp;
629 c_delbefore(el, (int)(el->el_line.cursor - el->el_line.buffer));
630 el->el_line.cursor = el->el_line.buffer; /* zap! */
631 return CC_REFRESH;
632 }
633
634
635 /* vi_search_prev():
636 * Vi search history previous
637 * [?]
638 */
639 protected el_action_t
vi_search_prev(EditLine * el,wint_t c)640 vi_search_prev(EditLine *el, wint_t c __attribute__((__unused__)))
641 {
642
643 return cv_search(el, ED_SEARCH_PREV_HISTORY);
644 }
645
646
647 /* vi_search_next():
648 * Vi search history next
649 * [/]
650 */
651 protected el_action_t
vi_search_next(EditLine * el,wint_t c)652 vi_search_next(EditLine *el, wint_t c __attribute__((__unused__)))
653 {
654
655 return cv_search(el, ED_SEARCH_NEXT_HISTORY);
656 }
657
658
659 /* vi_repeat_search_next():
660 * Vi repeat current search in the same search direction
661 * [n]
662 */
663 protected el_action_t
vi_repeat_search_next(EditLine * el,wint_t c)664 vi_repeat_search_next(EditLine *el, wint_t c __attribute__((__unused__)))
665 {
666
667 if (el->el_search.patlen == 0)
668 return CC_ERROR;
669 else
670 return cv_repeat_srch(el, el->el_search.patdir);
671 }
672
673
674 /* vi_repeat_search_prev():
675 * Vi repeat current search in the opposite search direction
676 * [N]
677 */
678 protected el_action_t
vi_repeat_search_prev(EditLine * el,wint_t c)679 vi_repeat_search_prev(EditLine *el, wint_t c __attribute__((__unused__)))
680 {
681
682 if (el->el_search.patlen == 0)
683 return CC_ERROR;
684 else
685 return (cv_repeat_srch(el,
686 el->el_search.patdir == ED_SEARCH_PREV_HISTORY ?
687 ED_SEARCH_NEXT_HISTORY : ED_SEARCH_PREV_HISTORY));
688 }
689
690
691 /* vi_next_char():
692 * Vi move to the character specified next
693 * [f]
694 */
695 protected el_action_t
vi_next_char(EditLine * el,wint_t c)696 vi_next_char(EditLine *el, wint_t c __attribute__((__unused__)))
697 {
698 return cv_csearch(el, CHAR_FWD, -1, el->el_state.argument, 0);
699 }
700
701
702 /* vi_prev_char():
703 * Vi move to the character specified previous
704 * [F]
705 */
706 protected el_action_t
vi_prev_char(EditLine * el,wint_t c)707 vi_prev_char(EditLine *el, wint_t c __attribute__((__unused__)))
708 {
709 return cv_csearch(el, CHAR_BACK, -1, el->el_state.argument, 0);
710 }
711
712
713 /* vi_to_next_char():
714 * Vi move up to the character specified next
715 * [t]
716 */
717 protected el_action_t
vi_to_next_char(EditLine * el,wint_t c)718 vi_to_next_char(EditLine *el, wint_t c __attribute__((__unused__)))
719 {
720 return cv_csearch(el, CHAR_FWD, -1, el->el_state.argument, 1);
721 }
722
723
724 /* vi_to_prev_char():
725 * Vi move up to the character specified previous
726 * [T]
727 */
728 protected el_action_t
vi_to_prev_char(EditLine * el,wint_t c)729 vi_to_prev_char(EditLine *el, wint_t c __attribute__((__unused__)))
730 {
731 return cv_csearch(el, CHAR_BACK, -1, el->el_state.argument, 1);
732 }
733
734
735 /* vi_repeat_next_char():
736 * Vi repeat current character search in the same search direction
737 * [;]
738 */
739 protected el_action_t
vi_repeat_next_char(EditLine * el,wint_t c)740 vi_repeat_next_char(EditLine *el, wint_t c __attribute__((__unused__)))
741 {
742
743 return cv_csearch(el, el->el_search.chadir, el->el_search.chacha,
744 el->el_state.argument, el->el_search.chatflg);
745 }
746
747
748 /* vi_repeat_prev_char():
749 * Vi repeat current character search in the opposite search direction
750 * [,]
751 */
752 protected el_action_t
vi_repeat_prev_char(EditLine * el,wint_t c)753 vi_repeat_prev_char(EditLine *el, wint_t c __attribute__((__unused__)))
754 {
755 el_action_t r;
756 int dir = el->el_search.chadir;
757
758 r = cv_csearch(el, -dir, el->el_search.chacha,
759 el->el_state.argument, el->el_search.chatflg);
760 el->el_search.chadir = dir;
761 return r;
762 }
763
764
765 /* vi_match():
766 * Vi go to matching () {} or []
767 * [%]
768 */
769 protected el_action_t
vi_match(EditLine * el,wint_t c)770 vi_match(EditLine *el, wint_t c __attribute__((__unused__)))
771 {
772 const wchar_t match_chars[] = L"()[]{}";
773 wchar_t *cp;
774 size_t delta, i, count;
775 wchar_t o_ch, c_ch;
776
777 *el->el_line.lastchar = '\0'; /* just in case */
778
779 i = wcscspn(el->el_line.cursor, match_chars);
780 o_ch = el->el_line.cursor[i];
781 if (o_ch == 0)
782 return CC_ERROR;
783 delta = wcschr(match_chars, o_ch) - match_chars;
784 c_ch = match_chars[delta ^ 1];
785 count = 1;
786 delta = 1 - (delta & 1) * 2;
787
788 for (cp = &el->el_line.cursor[i]; count; ) {
789 cp += delta;
790 if (cp < el->el_line.buffer || cp >= el->el_line.lastchar)
791 return CC_ERROR;
792 if (*cp == o_ch)
793 count++;
794 else if (*cp == c_ch)
795 count--;
796 }
797
798 el->el_line.cursor = cp;
799
800 if (el->el_chared.c_vcmd.action != NOP) {
801 /* NB posix says char under cursor should NOT be deleted
802 for -ve delta - this is different to netbsd vi. */
803 if (delta > 0)
804 el->el_line.cursor++;
805 cv_delfini(el);
806 return CC_REFRESH;
807 }
808 return CC_CURSOR;
809 }
810
811 /* vi_undo_line():
812 * Vi undo all changes to line
813 * [U]
814 */
815 protected el_action_t
vi_undo_line(EditLine * el,wint_t c)816 vi_undo_line(EditLine *el, wint_t c __attribute__((__unused__)))
817 {
818
819 cv_undo(el);
820 return hist_get(el);
821 }
822
823 /* vi_to_column():
824 * Vi go to specified column
825 * [|]
826 * NB netbsd vi goes to screen column 'n', posix says nth character
827 */
828 protected el_action_t
vi_to_column(EditLine * el,wint_t c)829 vi_to_column(EditLine *el, wint_t c __attribute__((__unused__)))
830 {
831
832 el->el_line.cursor = el->el_line.buffer;
833 el->el_state.argument--;
834 return ed_next_char(el, 0);
835 }
836
837 /* vi_yank_end():
838 * Vi yank to end of line
839 * [Y]
840 */
841 protected el_action_t
vi_yank_end(EditLine * el,wint_t c)842 vi_yank_end(EditLine *el, wint_t c __attribute__((__unused__)))
843 {
844
845 cv_yank(el, el->el_line.cursor,
846 (int)(el->el_line.lastchar - el->el_line.cursor));
847 return CC_REFRESH;
848 }
849
850 /* vi_yank():
851 * Vi yank
852 * [y]
853 */
854 protected el_action_t
vi_yank(EditLine * el,wint_t c)855 vi_yank(EditLine *el, wint_t c __attribute__((__unused__)))
856 {
857
858 return cv_action(el, YANK);
859 }
860
861 /* vi_comment_out():
862 * Vi comment out current command
863 * [#]
864 */
865 protected el_action_t
vi_comment_out(EditLine * el,wint_t c)866 vi_comment_out(EditLine *el, wint_t c __attribute__((__unused__)))
867 {
868
869 el->el_line.cursor = el->el_line.buffer;
870 c_insert(el, 1);
871 *el->el_line.cursor = '#';
872 re_refresh(el);
873 return ed_newline(el, 0);
874 }
875
876 /* vi_alias():
877 * Vi include shell alias
878 * [@]
879 * NB: posix implies that we should enter insert mode, however
880 * this is against historical precedent...
881 */
882 #ifdef __weak_reference
883 __weakref_visible char *my_get_alias_text(const char *)
884 __weak_reference(get_alias_text);
885 #endif
886 protected el_action_t
vi_alias(EditLine * el,wint_t c)887 vi_alias(EditLine *el, wint_t c __attribute__((__unused__)))
888 {
889 #ifdef __weak_reference
890 char alias_name[3];
891 char *alias_text;
892
893 if (my_get_alias_text == 0) {
894 return CC_ERROR;
895 }
896
897 alias_name[0] = '_';
898 alias_name[2] = 0;
899 if (el_getc(el, &alias_name[1]) != 1)
900 return CC_ERROR;
901
902 alias_text = my_get_alias_text(alias_name);
903 if (alias_text != NULL)
904 el_wpush(el, ct_decode_string(alias_text, &el->el_scratch));
905 return CC_NORM;
906 #else
907 return CC_ERROR;
908 #endif
909 }
910
911 /* vi_to_history_line():
912 * Vi go to specified history file line.
913 * [G]
914 */
915 protected el_action_t
vi_to_history_line(EditLine * el,wint_t c)916 vi_to_history_line(EditLine *el, wint_t c __attribute__((__unused__)))
917 {
918 int sv_event_no = el->el_history.eventno;
919 el_action_t rval;
920
921
922 if (el->el_history.eventno == 0) {
923 (void) wcsncpy(el->el_history.buf, el->el_line.buffer,
924 EL_BUFSIZ);
925 el->el_history.last = el->el_history.buf +
926 (el->el_line.lastchar - el->el_line.buffer);
927 }
928
929 /* Lack of a 'count' means oldest, not 1 */
930 if (!el->el_state.doingarg) {
931 el->el_history.eventno = 0x7fffffff;
932 hist_get(el);
933 } else {
934 /* This is brain dead, all the rest of this code counts
935 * upwards going into the past. Here we need count in the
936 * other direction (to match the output of fc -l).
937 * I could change the world, but this seems to suffice.
938 */
939 el->el_history.eventno = 1;
940 if (hist_get(el) == CC_ERROR)
941 return CC_ERROR;
942 el->el_history.eventno = 1 + el->el_history.ev.num
943 - el->el_state.argument;
944 if (el->el_history.eventno < 0) {
945 el->el_history.eventno = sv_event_no;
946 return CC_ERROR;
947 }
948 }
949 rval = hist_get(el);
950 if (rval == CC_ERROR)
951 el->el_history.eventno = sv_event_no;
952 return rval;
953 }
954
955 /* vi_histedit():
956 * Vi edit history line with vi
957 * [v]
958 */
959 protected el_action_t
vi_histedit(EditLine * el,wint_t c)960 vi_histedit(EditLine *el, wint_t c __attribute__((__unused__)))
961 {
962 int fd;
963 pid_t pid;
964 ssize_t st;
965 int status;
966 char tempfile[] = "/tmp/histedit.XXXXXXXXXX";
967 char *cp;
968 size_t len;
969 wchar_t *line;
970
971 if (el->el_state.doingarg) {
972 if (vi_to_history_line(el, 0) == CC_ERROR)
973 return CC_ERROR;
974 }
975
976 fd = mkstemp(tempfile);
977 if (fd == -1)
978 return CC_ERROR;
979 len = (size_t)(el->el_line.lastchar - el->el_line.buffer);
980 #define TMP_BUFSIZ (EL_BUFSIZ * MB_LEN_MAX)
981 cp = malloc(TMP_BUFSIZ);
982 if (cp == NULL) {
983 close(fd);
984 unlink(tempfile);
985 return CC_ERROR;
986 }
987 line = reallocarray(NULL, len + 1, sizeof(*line));
988 if (line == NULL) {
989 close(fd);
990 unlink(tempfile);
991 free(cp);
992 return CC_ERROR;
993 }
994 wcsncpy(line, el->el_line.buffer, len);
995 line[len] = '\0';
996 wcstombs(cp, line, TMP_BUFSIZ - 1);
997 cp[TMP_BUFSIZ - 1] = '\0';
998 len = strlen(cp);
999 write(fd, cp, len);
1000 write(fd, "\n", 1);
1001 pid = fork();
1002 switch (pid) {
1003 case -1:
1004 close(fd);
1005 unlink(tempfile);
1006 free(cp);
1007 free(line);
1008 return CC_ERROR;
1009 case 0:
1010 close(fd);
1011 execlp("vi", "vi", tempfile, (char *)NULL);
1012 exit(0);
1013 /*NOTREACHED*/
1014 default:
1015 while (waitpid(pid, &status, 0) != pid)
1016 continue;
1017 lseek(fd, (off_t)0, SEEK_SET);
1018 st = read(fd, cp, TMP_BUFSIZ - 1);
1019 if (st > 0) {
1020 cp[st] = '\0';
1021 len = (size_t)(el->el_line.limit - el->el_line.buffer);
1022 len = mbstowcs(el->el_line.buffer, cp, len);
1023 if (len > 0 && el->el_line.buffer[len - 1] == '\n')
1024 --len;
1025 }
1026 else
1027 len = 0;
1028 el->el_line.cursor = el->el_line.buffer;
1029 el->el_line.lastchar = el->el_line.buffer + len;
1030 free(cp);
1031 free(line);
1032 break;
1033 }
1034
1035 close(fd);
1036 unlink(tempfile);
1037 /* return CC_REFRESH; */
1038 return ed_newline(el, 0);
1039 }
1040
1041 /* vi_history_word():
1042 * Vi append word from previous input line
1043 * [_]
1044 * Who knows where this one came from!
1045 * '_' in vi means 'entire current line', so 'cc' is a synonym for 'c_'
1046 */
1047 protected el_action_t
vi_history_word(EditLine * el,wint_t c)1048 vi_history_word(EditLine *el, wint_t c __attribute__((__unused__)))
1049 {
1050 const wchar_t *wp = HIST_FIRST(el);
1051 const wchar_t *wep, *wsp;
1052 int len;
1053 wchar_t *cp;
1054 const wchar_t *lim;
1055
1056 if (wp == NULL)
1057 return CC_ERROR;
1058
1059 wep = wsp = NULL;
1060 do {
1061 while (iswspace(*wp))
1062 wp++;
1063 if (*wp == 0)
1064 break;
1065 wsp = wp;
1066 while (*wp && !iswspace(*wp))
1067 wp++;
1068 wep = wp;
1069 } while ((!el->el_state.doingarg || --el->el_state.argument > 0)
1070 && *wp != 0);
1071
1072 if (wsp == NULL || (el->el_state.doingarg && el->el_state.argument != 0))
1073 return CC_ERROR;
1074
1075 cv_undo(el);
1076 len = (int)(wep - wsp);
1077 if (el->el_line.cursor < el->el_line.lastchar)
1078 el->el_line.cursor++;
1079 c_insert(el, len + 1);
1080 cp = el->el_line.cursor;
1081 lim = el->el_line.limit;
1082 if (cp < lim)
1083 *cp++ = ' ';
1084 while (wsp < wep && cp < lim)
1085 *cp++ = *wsp++;
1086 el->el_line.cursor = cp;
1087
1088 el->el_map.current = el->el_map.key;
1089 return CC_REFRESH;
1090 }
1091
1092 /* vi_redo():
1093 * Vi redo last non-motion command
1094 * [.]
1095 */
1096 protected el_action_t
vi_redo(EditLine * el,wint_t c)1097 vi_redo(EditLine *el, wint_t c __attribute__((__unused__)))
1098 {
1099 c_redo_t *r = &el->el_chared.c_redo;
1100
1101 if (!el->el_state.doingarg && r->count) {
1102 el->el_state.doingarg = 1;
1103 el->el_state.argument = r->count;
1104 }
1105
1106 el->el_chared.c_vcmd.pos = el->el_line.cursor;
1107 el->el_chared.c_vcmd.action = r->action;
1108 if (r->pos != r->buf) {
1109 if (r->pos + 1 > r->lim)
1110 /* sanity */
1111 r->pos = r->lim - 1;
1112 r->pos[0] = 0;
1113 el_wpush(el, r->buf);
1114 }
1115
1116 el->el_state.thiscmd = r->cmd;
1117 el->el_state.thisch = r->ch;
1118 return (*el->el_map.func[r->cmd])(el, r->ch);
1119 }
1120