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Titan Core Initial Contribution
[deliverable/titan.core.git] / mctr2 / editline / libedit / src / vi.c
CommitLineData
970ed795
EL		 1/* $NetBSD: vi.c,v 1.31 2009/12/30 22:37:40 christos Exp $ */
2
3/*-
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Christos Zoulas of Cornell University.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include "config.h"
36#include <stdlib.h>
37#include <unistd.h>
38#include <limits.h>
39#include <sys/wait.h>
40
41#if !defined(lint) && !defined(SCCSID)
42#if 0
43static char sccsid[] = "@(#)vi.c 8.1 (Berkeley) 6/4/93";
44#else
45__RCSID("$NetBSD: vi.c,v 1.31 2009/12/30 22:37:40 christos Exp $");
46#endif
47#endif /* not lint && not SCCSID */
48
49/*
50 * vi.c: Vi mode commands.
51 */
52#include "el.h"
53
54private el_action_t cv_action(EditLine *, Int);
55private el_action_t cv_paste(EditLine *, Int);
56
57/* cv_action():
58 * Handle vi actions.
59 */
60private el_action_t
61cv_action(EditLine *el, Int c)
62{
63
64 if (el->el_chared.c_vcmd.action != NOP) {
65 /* 'cc', 'dd' and (possibly) friends */
66 if (c != 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 */
92private el_action_t
93cv_paste(EditLine *el, Int 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: \"%.*s\"\n", (int)len, k->buf);
102#endif
103
104 cv_undo(el);
105
106 if (!c && el->el_line.cursor < el->el_line.lastchar)
107 el->el_line.cursor++;
108
109 c_insert(el, (int)len);
110 if (el->el_line.cursor + len > el->el_line.lastchar)
111 return (CC_ERROR);
112 (void) memcpy(el->el_line.cursor, k->buf, len *
113 sizeof(*el->el_line.cursor));
114
115 return (CC_REFRESH);
116}
117
118
119/* vi_paste_next():
120 * Vi paste previous deletion to the right of the cursor
121 * [p]
122 */
123protected el_action_t
124/*ARGSUSED*/
125vi_paste_next(EditLine *el, Int 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 */
136protected el_action_t
137/*ARGSUSED*/
138vi_paste_prev(EditLine *el, Int c __attribute__((__unused__)))
139{
140
141 return (cv_paste(el, 1));
142}
143
144
145/* vi_prev_big_word():
146 * Vi move to the previous space delimited word
147 * [B]
148 */
149protected el_action_t
150/*ARGSUSED*/
151vi_prev_big_word(EditLine *el, Int c __attribute__((__unused__)))
152{
153
154 if (el->el_line.cursor == el->el_line.buffer)
155 return (CC_ERROR);
156
157 el->el_line.cursor = cv_prev_word(el->el_line.cursor,
158 el->el_line.buffer,
159 el->el_state.argument,
160 cv__isWord);
161
162 if (el->el_chared.c_vcmd.action != NOP) {
163 cv_delfini(el);
164 return (CC_REFRESH);
165 }
166 return (CC_CURSOR);
167}
168
169
170/* vi_prev_word():
171 * Vi move to the previous word
172 * [b]
173 */
174protected el_action_t
175/*ARGSUSED*/
176vi_prev_word(EditLine *el, Int c __attribute__((__unused__)))
177{
178
179 if (el->el_line.cursor == el->el_line.buffer)
180 return (CC_ERROR);
181
182 el->el_line.cursor = cv_prev_word(el->el_line.cursor,
183 el->el_line.buffer,
184 el->el_state.argument,
185 cv__isword);
186
187 if (el->el_chared.c_vcmd.action != NOP) {
188 cv_delfini(el);
189 return (CC_REFRESH);
190 }
191 return (CC_CURSOR);
192}
193
194
195/* vi_next_big_word():
196 * Vi move to the next space delimited word
197 * [W]
198 */
199protected el_action_t
200/*ARGSUSED*/
201vi_next_big_word(EditLine *el, Int c __attribute__((__unused__)))
202{
203
204 if (el->el_line.cursor >= el->el_line.lastchar - 1)
205 return (CC_ERROR);
206
207 el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
208 el->el_line.lastchar, el->el_state.argument, cv__isWord);
209
210 if (el->el_map.type == MAP_VI)
211 if (el->el_chared.c_vcmd.action != NOP) {
212 cv_delfini(el);
213 return (CC_REFRESH);
214 }
215 return (CC_CURSOR);
216}
217
218
219/* vi_next_word():
220 * Vi move to the next word
221 * [w]
222 */
223protected el_action_t
224/*ARGSUSED*/
225vi_next_word(EditLine *el, Int c __attribute__((__unused__)))
226{
227
228 if (el->el_line.cursor >= el->el_line.lastchar - 1)
229 return (CC_ERROR);
230
231 el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
232 el->el_line.lastchar, el->el_state.argument, cv__isword);
233
234 if (el->el_map.type == MAP_VI)
235 if (el->el_chared.c_vcmd.action != NOP) {
236 cv_delfini(el);
237 return (CC_REFRESH);
238 }
239 return (CC_CURSOR);
240}
241
242
243/* vi_change_case():
244 * Vi change case of character under the cursor and advance one character
245 * [~]
246 */
247protected el_action_t
248vi_change_case(EditLine *el, Int c)
249{
250 int i;
251
252 if (el->el_line.cursor >= el->el_line.lastchar)
253 return (CC_ERROR);
254 cv_undo(el);
255 for (i = 0; i < el->el_state.argument; i++) {
256
257 c = *el->el_line.cursor;
258 if (Isupper(c))
259 *el->el_line.cursor = Tolower(c);
260 else if (Islower(c))
261 *el->el_line.cursor = Toupper(c);
262
263 if (++el->el_line.cursor >= el->el_line.lastchar) {
264 el->el_line.cursor--;
265 re_fastaddc(el);
266 break;
267 }
268 re_fastaddc(el);
269 }
270 return CC_NORM;
271}
272
273
274/* vi_change_meta():
275 * Vi change prefix command
276 * [c]
277 */
278protected el_action_t
279/*ARGSUSED*/
280vi_change_meta(EditLine *el, Int c __attribute__((__unused__)))
281{
282
283 /*
284 * Delete with insert == change: first we delete and then we leave in
285 * insert mode.
286 */
287 return (cv_action(el, DELETE | INSERT));
288}
289
290
291/* vi_insert_at_bol():
292 * Vi enter insert mode at the beginning of line
293 * [I]
294 */
295protected el_action_t
296/*ARGSUSED*/
297vi_insert_at_bol(EditLine *el, Int c __attribute__((__unused__)))
298{
299
300 el->el_line.cursor = el->el_line.buffer;
301 cv_undo(el);
302 el->el_map.current = el->el_map.key;
303 return (CC_CURSOR);
304}
305
306
307/* vi_replace_char():
308 * Vi replace character under the cursor with the next character typed
309 * [r]
310 */
311protected el_action_t
312/*ARGSUSED*/
313vi_replace_char(EditLine *el, Int c __attribute__((__unused__)))
314{
315
316 if (el->el_line.cursor >= el->el_line.lastchar)
317 return CC_ERROR;
318
319 el->el_map.current = el->el_map.key;
320 el->el_state.inputmode = MODE_REPLACE_1;
321 cv_undo(el);
322 return (CC_ARGHACK);
323}
324
325
326/* vi_replace_mode():
327 * Vi enter replace mode
328 * [R]
329 */
330protected el_action_t
331/*ARGSUSED*/
332vi_replace_mode(EditLine *el, Int c __attribute__((__unused__)))
333{
334
335 el->el_map.current = el->el_map.key;
336 el->el_state.inputmode = MODE_REPLACE;
337 cv_undo(el);
338 return (CC_NORM);
339}
340
341
342/* vi_substitute_char():
343 * Vi replace character under the cursor and enter insert mode
344 * [s]
345 */
346protected el_action_t
347/*ARGSUSED*/
348vi_substitute_char(EditLine *el, Int c __attribute__((__unused__)))
349{
350
351 c_delafter(el, el->el_state.argument);
352 el->el_map.current = el->el_map.key;
353 return (CC_REFRESH);
354}
355
356
357/* vi_substitute_line():
358 * Vi substitute entire line
359 * [S]
360 */
361protected el_action_t
362/*ARGSUSED*/
363vi_substitute_line(EditLine *el, Int c __attribute__((__unused__)))
364{
365
366 cv_undo(el);
367 cv_yank(el, el->el_line.buffer,
368 (int)(el->el_line.lastchar - el->el_line.buffer));
369 (void) em_kill_line(el, 0);
370 el->el_map.current = el->el_map.key;
371 return (CC_REFRESH);
372}
373
374
375/* vi_change_to_eol():
376 * Vi change to end of line
377 * [C]
378 */
379protected el_action_t
380/*ARGSUSED*/
381vi_change_to_eol(EditLine *el, Int c __attribute__((__unused__)))
382{
383
384 cv_undo(el);
385 cv_yank(el, el->el_line.cursor,
386 (int)(el->el_line.lastchar - el->el_line.cursor));
387 (void) ed_kill_line(el, 0);
388 el->el_map.current = el->el_map.key;
389 return (CC_REFRESH);
390}
391
392
393/* vi_insert():
394 * Vi enter insert mode
395 * [i]
396 */
397protected el_action_t
398/*ARGSUSED*/
399vi_insert(EditLine *el, Int c __attribute__((__unused__)))
400{
401
402 el->el_map.current = el->el_map.key;
403 cv_undo(el);
404 return (CC_NORM);
405}
406
407
408/* vi_add():
409 * Vi enter insert mode after the cursor
410 * [a]
411 */
412protected el_action_t
413/*ARGSUSED*/
414vi_add(EditLine *el, Int c __attribute__((__unused__)))
415{
416 int ret;
417
418 el->el_map.current = el->el_map.key;
419 if (el->el_line.cursor < el->el_line.lastchar) {
420 el->el_line.cursor++;
421 if (el->el_line.cursor > el->el_line.lastchar)
422 el->el_line.cursor = el->el_line.lastchar;
423 ret = CC_CURSOR;
424 } else
425 ret = CC_NORM;
426
427 cv_undo(el);
428
429 return (ret);
430}
431
432
433/* vi_add_at_eol():
434 * Vi enter insert mode at end of line
435 * [A]
436 */
437protected el_action_t
438/*ARGSUSED*/
439vi_add_at_eol(EditLine *el, Int c __attribute__((__unused__)))
440{
441
442 el->el_map.current = el->el_map.key;
443 el->el_line.cursor = el->el_line.lastchar;
444 cv_undo(el);
445 return (CC_CURSOR);
446}
447
448
449/* vi_delete_meta():
450 * Vi delete prefix command
451 * [d]
452 */
453protected el_action_t
454/*ARGSUSED*/
455vi_delete_meta(EditLine *el, Int c __attribute__((__unused__)))
456{
457
458 return (cv_action(el, DELETE));
459}
460
461
462/* vi_end_big_word():
463 * Vi move to the end of the current space delimited word
464 * [E]
465 */
466protected el_action_t
467/*ARGSUSED*/
468vi_end_big_word(EditLine *el, Int c __attribute__((__unused__)))
469{
470
471 if (el->el_line.cursor == el->el_line.lastchar)
472 return (CC_ERROR);
473
474 el->el_line.cursor = cv__endword(el->el_line.cursor,
475 el->el_line.lastchar, el->el_state.argument, cv__isWord);
476
477 if (el->el_chared.c_vcmd.action != NOP) {
478 el->el_line.cursor++;
479 cv_delfini(el);
480 return (CC_REFRESH);
481 }
482 return (CC_CURSOR);
483}
484
485
486/* vi_end_word():
487 * Vi move to the end of the current word
488 * [e]
489 */
490protected el_action_t
491/*ARGSUSED*/
492vi_end_word(EditLine *el, Int c __attribute__((__unused__)))
493{
494
495 if (el->el_line.cursor == el->el_line.lastchar)
496 return (CC_ERROR);
497
498 el->el_line.cursor = cv__endword(el->el_line.cursor,
499 el->el_line.lastchar, el->el_state.argument, cv__isword);
500
501 if (el->el_chared.c_vcmd.action != NOP) {
502 el->el_line.cursor++;
503 cv_delfini(el);
504 return (CC_REFRESH);
505 }
506 return (CC_CURSOR);
507}
508
509
510/* vi_undo():
511 * Vi undo last change
512 * [u]
513 */
514protected el_action_t
515/*ARGSUSED*/
516vi_undo(EditLine *el, Int c __attribute__((__unused__)))
517{
518 c_undo_t un = el->el_chared.c_undo;
519
520 if (un.len == -1)
521 return CC_ERROR;
522
523 /* switch line buffer and undo buffer */
524 el->el_chared.c_undo.buf = el->el_line.buffer;
525 el->el_chared.c_undo.len = el->el_line.lastchar - el->el_line.buffer;
526 el->el_chared.c_undo.cursor =
527 (int)(el->el_line.cursor - el->el_line.buffer);
528 el->el_line.limit = un.buf + (el->el_line.limit - el->el_line.buffer);
529 el->el_line.buffer = un.buf;
530 el->el_line.cursor = un.buf + un.cursor;
531 el->el_line.lastchar = un.buf + un.len;
532
533 return (CC_REFRESH);
534}
535
536
537/* vi_command_mode():
538 * Vi enter command mode (use alternative key bindings)
539 * [<ESC>]
540 */
541protected el_action_t
542/*ARGSUSED*/
543vi_command_mode(EditLine *el, Int c __attribute__((__unused__)))
544{
545
546 /* [Esc] cancels pending action */
547 el->el_chared.c_vcmd.action = NOP;
548 el->el_chared.c_vcmd.pos = 0;
549
550 el->el_state.doingarg = 0;
551
552 el->el_state.inputmode = MODE_INSERT;
553 el->el_map.current = el->el_map.alt;
554#ifdef VI_MOVE
555 if (el->el_line.cursor > el->el_line.buffer)
556 el->el_line.cursor--;
557#endif
558 return (CC_CURSOR);
559}
560
561
562/* vi_zero():
563 * Vi move to the beginning of line
564 * [0]
565 */
566protected el_action_t
567vi_zero(EditLine *el, Int c)
568{
569
570 if (el->el_state.doingarg)
571 return ed_argument_digit(el, c);
572
573 el->el_line.cursor = el->el_line.buffer;
574 if (el->el_chared.c_vcmd.action != NOP) {
575 cv_delfini(el);
576 return (CC_REFRESH);
577 }
578 return (CC_CURSOR);
579}
580
581
582/* vi_delete_prev_char():
583 * Vi move to previous character (backspace)
584 * [^H] in insert mode only
585 */
586protected el_action_t
587/*ARGSUSED*/
588vi_delete_prev_char(EditLine *el, Int c __attribute__((__unused__)))
589{
590
591 if (el->el_line.cursor <= el->el_line.buffer)
592 return (CC_ERROR);
593
594 c_delbefore1(el);
595 el->el_line.cursor--;
596 return (CC_REFRESH);
597}
598
599
600/* vi_list_or_eof():
601 * Vi list choices for completion or indicate end of file if empty line
602 * [^D]
603 */
604protected el_action_t
605/*ARGSUSED*/
606vi_list_or_eof(EditLine *el, Int c)
607{
608
609 if (el->el_line.cursor == el->el_line.lastchar) {
610 if (el->el_line.cursor == el->el_line.buffer) {
611 term_writec(el, c); /* then do a EOF */
612 return (CC_EOF);
613 } else {
614 /*
615 * Here we could list completions, but it is an
616 * error right now
617 */
618 term_beep(el);
619 return (CC_ERROR);
620 }
621 } else {
622#ifdef notyet
623 re_goto_bottom(el);
624 *el->el_line.lastchar = '\0'; /* just in case */
625 return (CC_LIST_CHOICES);
626#else
627 /*
628 * Just complain for now.
629 */
630 term_beep(el);
631 return (CC_ERROR);
632#endif
633 }
634}
635
636
637/* vi_kill_line_prev():
638 * Vi cut from beginning of line to cursor
639 * [^U]
640 */
641protected el_action_t
642/*ARGSUSED*/
643vi_kill_line_prev(EditLine *el, Int c __attribute__((__unused__)))
644{
645 Char *kp, *cp;
646
647 cp = el->el_line.buffer;
648 kp = el->el_chared.c_kill.buf;
649 while (cp < el->el_line.cursor)
650 *kp++ = *cp++; /* copy it */
651 el->el_chared.c_kill.last = kp;
652 c_delbefore(el, (int)(el->el_line.cursor - el->el_line.buffer));
653 el->el_line.cursor = el->el_line.buffer; /* zap! */
654 return (CC_REFRESH);
655}
656
657
658/* vi_search_prev():
659 * Vi search history previous
660 * [?]
661 */
662protected el_action_t
663/*ARGSUSED*/
664vi_search_prev(EditLine *el, Int c __attribute__((__unused__)))
665{
666
667 return (cv_search(el, ED_SEARCH_PREV_HISTORY));
668}
669
670
671/* vi_search_next():
672 * Vi search history next
673 * [/]
674 */
675protected el_action_t
676/*ARGSUSED*/
677vi_search_next(EditLine *el, Int c __attribute__((__unused__)))
678{
679
680 return (cv_search(el, ED_SEARCH_NEXT_HISTORY));
681}
682
683
684/* vi_repeat_search_next():
685 * Vi repeat current search in the same search direction
686 * [n]
687 */
688protected el_action_t
689/*ARGSUSED*/
690vi_repeat_search_next(EditLine *el, Int c __attribute__((__unused__)))
691{
692
693 if (el->el_search.patlen == 0)
694 return (CC_ERROR);
695 else
696 return (cv_repeat_srch(el, el->el_search.patdir));
697}
698
699
700/* vi_repeat_search_prev():
701 * Vi repeat current search in the opposite search direction
702 * [N]
703 */
704/*ARGSUSED*/
705protected el_action_t
706vi_repeat_search_prev(EditLine *el, Int c __attribute__((__unused__)))
707{
708
709 if (el->el_search.patlen == 0)
710 return (CC_ERROR);
711 else
712 return (cv_repeat_srch(el,
713 el->el_search.patdir == ED_SEARCH_PREV_HISTORY ?
714 ED_SEARCH_NEXT_HISTORY : ED_SEARCH_PREV_HISTORY));
715}
716
717
718/* vi_next_char():
719 * Vi move to the character specified next
720 * [f]
721 */
722protected el_action_t
723/*ARGSUSED*/
724vi_next_char(EditLine *el, Int c __attribute__((__unused__)))
725{
726 return cv_csearch(el, CHAR_FWD, -1, el->el_state.argument, 0);
727}
728
729
730/* vi_prev_char():
731 * Vi move to the character specified previous
732 * [F]
733 */
734protected el_action_t
735/*ARGSUSED*/
736vi_prev_char(EditLine *el, Int c __attribute__((__unused__)))
737{
738 return cv_csearch(el, CHAR_BACK, -1, el->el_state.argument, 0);
739}
740
741
742/* vi_to_next_char():
743 * Vi move up to the character specified next
744 * [t]
745 */
746protected el_action_t
747/*ARGSUSED*/
748vi_to_next_char(EditLine *el, Int c __attribute__((__unused__)))
749{
750 return cv_csearch(el, CHAR_FWD, -1, el->el_state.argument, 1);
751}
752
753
754/* vi_to_prev_char():
755 * Vi move up to the character specified previous
756 * [T]
757 */
758protected el_action_t
759/*ARGSUSED*/
760vi_to_prev_char(EditLine *el, Int c __attribute__((__unused__)))
761{
762 return cv_csearch(el, CHAR_BACK, -1, el->el_state.argument, 1);
763}
764
765
766/* vi_repeat_next_char():
767 * Vi repeat current character search in the same search direction
768 * [;]
769 */
770protected el_action_t
771/*ARGSUSED*/
772vi_repeat_next_char(EditLine *el, Int c __attribute__((__unused__)))
773{
774
775 return cv_csearch(el, el->el_search.chadir, el->el_search.chacha,
776 el->el_state.argument, el->el_search.chatflg);
777}
778
779
780/* vi_repeat_prev_char():
781 * Vi repeat current character search in the opposite search direction
782 * [,]
783 */
784protected el_action_t
785/*ARGSUSED*/
786vi_repeat_prev_char(EditLine *el, Int c __attribute__((__unused__)))
787{
788 el_action_t r;
789 int dir = el->el_search.chadir;
790
791 r = cv_csearch(el, -dir, el->el_search.chacha,
792 el->el_state.argument, el->el_search.chatflg);
793 el->el_search.chadir = dir;
794 return r;
795}
796
797
798/* vi_match():
799 * Vi go to matching () {} or []
800 * [%]
801 */
802protected el_action_t
803/*ARGSUSED*/
804vi_match(EditLine *el, Int c __attribute__((__unused__)))
805{
806 const Char match_chars[] = STR("()[]{}");
807 Char *cp;
808 size_t delta, i, count;
809 Char o_ch, c_ch;
810
811 *el->el_line.lastchar = '\0'; /* just in case */
812
813 i = Strcspn(el->el_line.cursor, match_chars);
814 o_ch = el->el_line.cursor[i];
815 if (o_ch == 0)
816 return CC_ERROR;
817 delta = Strchr(match_chars, o_ch) - match_chars;
818 c_ch = match_chars[delta ^ 1];
819 count = 1;
820 delta = 1 - (delta & 1) * 2;
821
822 for (cp = &el->el_line.cursor[i]; count; ) {
823 cp += delta;
824 if (cp < el->el_line.buffer || cp >= el->el_line.lastchar)
825 return CC_ERROR;
826 if (*cp == o_ch)
827 count++;
828 else if (*cp == c_ch)
829 count--;
830 }
831
832 el->el_line.cursor = cp;
833
834 if (el->el_chared.c_vcmd.action != NOP) {
835 /* NB posix says char under cursor should NOT be deleted
836 for -ve delta - this is different to netbsd vi. */
837 if (delta > 0)
838 el->el_line.cursor++;
839 cv_delfini(el);
840 return (CC_REFRESH);
841 }
842 return (CC_CURSOR);
843}
844
845/* vi_undo_line():
846 * Vi undo all changes to line
847 * [U]
848 */
849protected el_action_t
850/*ARGSUSED*/
851vi_undo_line(EditLine *el, Int c __attribute__((__unused__)))
852{
853
854 cv_undo(el);
855 return hist_get(el);
856}
857
858/* vi_to_column():
859 * Vi go to specified column
860 * [|]
861 * NB netbsd vi goes to screen column 'n', posix says nth character
862 */
863protected el_action_t
864/*ARGSUSED*/
865vi_to_column(EditLine *el, Int c __attribute__((__unused__)))
866{
867
868 el->el_line.cursor = el->el_line.buffer;
869 el->el_state.argument--;
870 return ed_next_char(el, 0);
871}
872
873/* vi_yank_end():
874 * Vi yank to end of line
875 * [Y]
876 */
877protected el_action_t
878/*ARGSUSED*/
879vi_yank_end(EditLine *el, Int c __attribute__((__unused__)))
880{
881
882 cv_yank(el, el->el_line.cursor,
883 (int)(el->el_line.lastchar - el->el_line.cursor));
884 return CC_REFRESH;
885}
886
887/* vi_yank():
888 * Vi yank
889 * [y]
890 */
891protected el_action_t
892/*ARGSUSED*/
893vi_yank(EditLine *el, Int c __attribute__((__unused__)))
894{
895
896 return cv_action(el, YANK);
897}
898
899/* vi_comment_out():
900 * Vi comment out current command
901 * [#]
902 */
903protected el_action_t
904/*ARGSUSED*/
905vi_comment_out(EditLine *el, Int c __attribute__((__unused__)))
906{
907
908 el->el_line.cursor = el->el_line.buffer;
909 c_insert(el, 1);
910 *el->el_line.cursor = '#';
911 re_refresh(el);
912 return ed_newline(el, 0);
913}
914
915/* vi_alias():
916 * Vi include shell alias
917 * [@]
918 * NB: posix implies that we should enter insert mode, however
919 * this is against historical precedent...
920 */
921//#ifdef __weak_reference
922//extern char *get_alias_text(const char *) __weak_reference(get_alias_text);
923//#endif
924protected el_action_t
925/*ARGSUSED*/
926vi_alias(EditLine *el __attribute__((__unused__)), Int c __attribute__((__unused__)))
927{
928/*
929#ifdef __weak_reference
930 char alias_name[3];
931 char *alias_text;
932
933 if (get_alias_text == 0) {
934 return CC_ERROR;
935 }
936
937 alias_name[0] = '_';
938 alias_name[2] = 0;
939 if (el_getc(el, &alias_name[1]) != 1)
940 return CC_ERROR;
941
942 alias_text = get_alias_text(alias_name);
943 if (alias_text != NULL)
944 FUN(el,push)(el, ct_decode_string(alias_text, &el->el_scratch));
945 return CC_NORM;
946#else
947*/
948 return CC_ERROR;
949//#endif
950}
951
952/* vi_to_history_line():
953 * Vi go to specified history file line.
954 * [G]
955 */
956protected el_action_t
957/*ARGSUSED*/
958vi_to_history_line(EditLine *el, Int c __attribute__((__unused__)))
959{
960 int sv_event_no = el->el_history.eventno;
961 el_action_t rval;
962
963
964 if (el->el_history.eventno == 0) {
965 (void) Strncpy(el->el_history.buf, el->el_line.buffer,
966 EL_BUFSIZ);
967 el->el_history.last = el->el_history.buf +
968 (el->el_line.lastchar - el->el_line.buffer);
969 }
970
971 /* Lack of a 'count' means oldest, not 1 */
972 if (!el->el_state.doingarg) {
973 el->el_history.eventno = 0x7fffffff;
974 hist_get(el);
975 } else {
976 /* This is brain dead, all the rest of this code counts
977 * upwards going into the past. Here we need count in the
978 * other direction (to match the output of fc -l).
979 * I could change the world, but this seems to suffice.
980 */
981 el->el_history.eventno = 1;
982 if (hist_get(el) == CC_ERROR)
983 return CC_ERROR;
984 el->el_history.eventno = 1 + el->el_history.ev.num
985 - el->el_state.argument;
986 if (el->el_history.eventno < 0) {
987 el->el_history.eventno = sv_event_no;
988 return CC_ERROR;
989 }
990 }
991 rval = hist_get(el);
992 if (rval == CC_ERROR)
993 el->el_history.eventno = sv_event_no;
994 return rval;
995}
996
997/* vi_histedit():
998 * Vi edit history line with vi
999 * [v]
1000 */
1001protected el_action_t
1002/*ARGSUSED*/
1003vi_histedit(EditLine *el, Int c __attribute__((__unused__)))
1004{
1005 int fd;
1006 pid_t pid;
1007 ssize_t st;
1008 int status;
1009 char tempfile[] = "/tmp/histedit.XXXXXXXXXX";
1010 char *cp;
1011 size_t len;
1012 Char *line;
1013
1014 if (el->el_state.doingarg) {
1015 if (vi_to_history_line(el, 0) == CC_ERROR)
1016 return CC_ERROR;
1017 }
1018
1019 fd = mkstemp(tempfile);
1020 if (fd < 0)
1021 return CC_ERROR;
1022 len = (size_t)(el->el_line.lastchar - el->el_line.buffer);
1023#define TMP_BUFSIZ (EL_BUFSIZ * MB_LEN_MAX)
1024 cp = el_malloc(TMP_BUFSIZ);
1025 if (cp == NULL)
1026 return CC_ERROR;
1027 line = el_malloc(len * sizeof(*line));
1028 if (line == NULL) {
1029 el_free((ptr_t)cp);
1030 return CC_ERROR;
1031 }
1032 Strncpy(line, el->el_line.buffer, len);
1033 line[len] = '\0';
1034 ct_wcstombs(cp, line, TMP_BUFSIZ - 1);
1035 cp[TMP_BUFSIZ - 1] = '\0';
1036 len = strlen(cp);
1037 write(fd, cp, len);
1038 write(fd, "\n", 1);
1039 pid = fork();
1040 switch (pid) {
1041 case -1:
1042 close(fd);
1043 unlink(tempfile);
1044 el_free(cp);
1045 el_free(line);
1046 return CC_ERROR;
1047 case 0:
1048 close(fd);
1049 execlp("vi", "vi", tempfile, (char *)NULL);
1050 exit(0);
1051 /*NOTREACHED*/
1052 default:
1053 while (waitpid(pid, &status, 0) != pid)
1054 continue;
1055 lseek(fd, (off_t)0, SEEK_SET);
1056 st = read(fd, cp, TMP_BUFSIZ);
1057 if (st > 0) {
1058 len = (size_t)(el->el_line.lastchar -
1059 el->el_line.buffer);
1060 len = ct_mbstowcs(el->el_line.buffer, cp, len);
1061 if (len > 0 && el->el_line.buffer[len -1] == '\n')
1062 --len;
1063 }
1064 else
1065 len = 0;
1066 el->el_line.cursor = el->el_line.buffer;
1067 el->el_line.lastchar = el->el_line.buffer + len;
1068 el_free(cp);
1069 el_free(line);
1070 break;
1071 }
1072
1073 close(fd);
1074 unlink(tempfile);
1075 /* return CC_REFRESH; */
1076 return ed_newline(el, 0);
1077}
1078
1079/* vi_history_word():
1080 * Vi append word from previous input line
1081 * [_]
1082 * Who knows where this one came from!
1083 * '_' in vi means 'entire current line', so 'cc' is a synonym for 'c_'
1084 */
1085protected el_action_t
1086/*ARGSUSED*/
1087vi_history_word(EditLine *el, Int c __attribute__((__unused__)))
1088{
1089 const Char *wp = HIST_FIRST(el);
1090 const Char *wep, *wsp;
1091 int len;
1092 Char *cp;
1093 const Char *lim;
1094
1095 if (wp == NULL)
1096 return CC_ERROR;
1097
1098 wep = wsp = 0;
1099 do {
1100 while (Isspace(*wp))
1101 wp++;
1102 if (*wp == 0)
1103 break;
1104 wsp = wp;
1105 while (*wp && !Isspace(*wp))
1106 wp++;
1107 wep = wp;
1108 } while ((!el->el_state.doingarg || --el->el_state.argument > 0)
1109 && *wp != 0);
1110
1111 if (wsp == 0 || (el->el_state.doingarg && el->el_state.argument != 0))
1112 return CC_ERROR;
1113
1114 cv_undo(el);
1115 len = (int)(wep - wsp);
1116 if (el->el_line.cursor < el->el_line.lastchar)
1117 el->el_line.cursor++;
1118 c_insert(el, len + 1);
1119 cp = el->el_line.cursor;
1120 lim = el->el_line.limit;
1121 if (cp < lim)
1122 *cp++ = ' ';
1123 while (wsp < wep && cp < lim)
1124 *cp++ = *wsp++;
1125 el->el_line.cursor = cp;
1126
1127 el->el_map.current = el->el_map.key;
1128 return CC_REFRESH;
1129}
1130
1131/* vi_redo():
1132 * Vi redo last non-motion command
1133 * [.]
1134 */
1135protected el_action_t
1136/*ARGSUSED*/
1137vi_redo(EditLine *el, Int c __attribute__((__unused__)))
1138{
1139 c_redo_t *r = &el->el_chared.c_redo;
1140
1141 if (!el->el_state.doingarg && r->count) {
1142 el->el_state.doingarg = 1;
1143 el->el_state.argument = r->count;
1144 }
1145
1146 el->el_chared.c_vcmd.pos = el->el_line.cursor;
1147 el->el_chared.c_vcmd.action = r->action;
1148 if (r->pos != r->buf) {
1149 if (r->pos + 1 > r->lim)
1150 /* sanity */
1151 r->pos = r->lim - 1;
1152 r->pos[0] = 0;
1153 FUN(el,push)(el, r->buf);
1154 }
1155
1156 el->el_state.thiscmd = r->cmd;
1157 el->el_state.thisch = r->ch;
1158 return (*el->el_map.func[r->cmd])(el, r->ch);
1159}
Titan Core - Deliverables
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