1 /* $NetBSD: common.c,v 1.45 2016/04/18 17:01:19 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 #if !defined(lint) && !defined(SCCSID)
37 #if 0
38 static char sccsid[] = "@(#)common.c 8.1 (Berkeley) 6/4/93";
39 #else
40 __RCSID("$NetBSD: common.c,v 1.45 2016/04/18 17:01:19 christos Exp $");
41 #endif
42 #endif /* not lint && not SCCSID */
43
44 /*
45 * common.c: Common Editor functions
46 */
47 #include <ctype.h>
48 #include <string.h>
49
50 #include "el.h"
51 #include "common.h"
52 #include "fcns.h"
53 #include "parse.h"
54 #include "vi.h"
55
56 /* ed_end_of_file():
57 * Indicate end of file
58 * [^D]
59 */
60 protected el_action_t
61 /*ARGSUSED*/
ed_end_of_file(EditLine * el,wint_t c)62 ed_end_of_file(EditLine *el, wint_t c __attribute__((__unused__)))
63 {
64
65 re_goto_bottom(el);
66 *el->el_line.lastchar = '\0';
67 return CC_EOF;
68 }
69
70
71 /* ed_insert():
72 * Add character to the line
73 * Insert a character [bound to all insert keys]
74 */
75 protected el_action_t
ed_insert(EditLine * el,wint_t c)76 ed_insert(EditLine *el, wint_t c)
77 {
78 int count = el->el_state.argument;
79
80 if (c == '\0')
81 return CC_ERROR;
82
83 if (el->el_line.lastchar + el->el_state.argument >=
84 el->el_line.limit) {
85 /* end of buffer space, try to allocate more */
86 if (!ch_enlargebufs(el, (size_t) count))
87 return CC_ERROR; /* error allocating more */
88 }
89
90 if (count == 1) {
91 if (el->el_state.inputmode == MODE_INSERT
92 || el->el_line.cursor >= el->el_line.lastchar)
93 c_insert(el, 1);
94
95 *el->el_line.cursor++ = c;
96 re_fastaddc(el); /* fast refresh for one char. */
97 } else {
98 if (el->el_state.inputmode != MODE_REPLACE_1)
99 c_insert(el, el->el_state.argument);
100
101 while (count-- && el->el_line.cursor < el->el_line.lastchar)
102 *el->el_line.cursor++ = c;
103 re_refresh(el);
104 }
105
106 if (el->el_state.inputmode == MODE_REPLACE_1)
107 return vi_command_mode(el, 0);
108
109 return CC_NORM;
110 }
111
112
113 /* ed_delete_prev_word():
114 * Delete from beginning of current word to cursor
115 * [M-^?] [^W]
116 */
117 protected el_action_t
118 /*ARGSUSED*/
ed_delete_prev_word(EditLine * el,wint_t c)119 ed_delete_prev_word(EditLine *el, wint_t c __attribute__((__unused__)))
120 {
121 wchar_t *cp, *p, *kp;
122
123 if (el->el_line.cursor == el->el_line.buffer)
124 return CC_ERROR;
125
126 cp = c__prev_word(el->el_line.cursor, el->el_line.buffer,
127 el->el_state.argument, ce__isword);
128
129 for (p = cp, kp = el->el_chared.c_kill.buf; p < el->el_line.cursor; p++)
130 *kp++ = *p;
131 el->el_chared.c_kill.last = kp;
132
133 c_delbefore(el, (int)(el->el_line.cursor - cp));/* delete before dot */
134 el->el_line.cursor = cp;
135 if (el->el_line.cursor < el->el_line.buffer)
136 el->el_line.cursor = el->el_line.buffer; /* bounds check */
137 return CC_REFRESH;
138 }
139
140
141 /* ed_delete_next_char():
142 * Delete character under cursor
143 * [^D] [x]
144 */
145 protected el_action_t
146 /*ARGSUSED*/
ed_delete_next_char(EditLine * el,wint_t c)147 ed_delete_next_char(EditLine *el, wint_t c __attribute__((__unused__)))
148 {
149 #ifdef DEBUG_EDIT
150 #define EL el->el_line
151 (void) fprintf(el->el_errfile,
152 "\nD(b: %p(%ls) c: %p(%ls) last: %p(%ls) limit: %p(%ls)\n",
153 EL.buffer, EL.buffer, EL.cursor, EL.cursor, EL.lastchar,
154 EL.lastchar, EL.limit, EL.limit);
155 #endif
156 if (el->el_line.cursor == el->el_line.lastchar) {
157 /* if I'm at the end */
158 if (el->el_map.type == MAP_VI) {
159 if (el->el_line.cursor == el->el_line.buffer) {
160 /* if I'm also at the beginning */
161 #ifdef KSHVI
162 return CC_ERROR;
163 #else
164 /* then do an EOF */
165 terminal_writec(el, c);
166 return CC_EOF;
167 #endif
168 } else {
169 #ifdef KSHVI
170 el->el_line.cursor--;
171 #else
172 return CC_ERROR;
173 #endif
174 }
175 } else
176 return CC_ERROR;
177 }
178 c_delafter(el, el->el_state.argument); /* delete after dot */
179 if (el->el_map.type == MAP_VI &&
180 el->el_line.cursor >= el->el_line.lastchar &&
181 el->el_line.cursor > el->el_line.buffer)
182 /* bounds check */
183 el->el_line.cursor = el->el_line.lastchar - 1;
184 return CC_REFRESH;
185 }
186
187
188 /* ed_kill_line():
189 * Cut to the end of line
190 * [^K] [^K]
191 */
192 protected el_action_t
193 /*ARGSUSED*/
ed_kill_line(EditLine * el,wint_t c)194 ed_kill_line(EditLine *el, wint_t c __attribute__((__unused__)))
195 {
196 wchar_t *kp, *cp;
197
198 cp = el->el_line.cursor;
199 kp = el->el_chared.c_kill.buf;
200 while (cp < el->el_line.lastchar)
201 *kp++ = *cp++; /* copy it */
202 el->el_chared.c_kill.last = kp;
203 /* zap! -- delete to end */
204 el->el_line.lastchar = el->el_line.cursor;
205 return CC_REFRESH;
206 }
207
208
209 /* ed_move_to_end():
210 * Move cursor to the end of line
211 * [^E] [^E]
212 */
213 protected el_action_t
214 /*ARGSUSED*/
ed_move_to_end(EditLine * el,wint_t c)215 ed_move_to_end(EditLine *el, wint_t c __attribute__((__unused__)))
216 {
217
218 el->el_line.cursor = el->el_line.lastchar;
219 if (el->el_map.type == MAP_VI) {
220 if (el->el_chared.c_vcmd.action != NOP) {
221 cv_delfini(el);
222 return CC_REFRESH;
223 }
224 #ifdef VI_MOVE
225 el->el_line.cursor--;
226 #endif
227 }
228 return CC_CURSOR;
229 }
230
231
232 /* ed_move_to_beg():
233 * Move cursor to the beginning of line
234 * [^A] [^A]
235 */
236 protected el_action_t
237 /*ARGSUSED*/
ed_move_to_beg(EditLine * el,wint_t c)238 ed_move_to_beg(EditLine *el, wint_t c __attribute__((__unused__)))
239 {
240
241 el->el_line.cursor = el->el_line.buffer;
242
243 if (el->el_map.type == MAP_VI) {
244 /* We want FIRST non space character */
245 while (iswspace(*el->el_line.cursor))
246 el->el_line.cursor++;
247 if (el->el_chared.c_vcmd.action != NOP) {
248 cv_delfini(el);
249 return CC_REFRESH;
250 }
251 }
252 return CC_CURSOR;
253 }
254
255
256 /* ed_transpose_chars():
257 * Exchange the character to the left of the cursor with the one under it
258 * [^T] [^T]
259 */
260 protected el_action_t
ed_transpose_chars(EditLine * el,wint_t c)261 ed_transpose_chars(EditLine *el, wint_t c)
262 {
263
264 if (el->el_line.cursor < el->el_line.lastchar) {
265 if (el->el_line.lastchar <= &el->el_line.buffer[1])
266 return CC_ERROR;
267 else
268 el->el_line.cursor++;
269 }
270 if (el->el_line.cursor > &el->el_line.buffer[1]) {
271 /* must have at least two chars entered */
272 c = el->el_line.cursor[-2];
273 el->el_line.cursor[-2] = el->el_line.cursor[-1];
274 el->el_line.cursor[-1] = c;
275 return CC_REFRESH;
276 } else
277 return CC_ERROR;
278 }
279
280
281 /* ed_next_char():
282 * Move to the right one character
283 * [^F] [^F]
284 */
285 protected el_action_t
286 /*ARGSUSED*/
ed_next_char(EditLine * el,wint_t c)287 ed_next_char(EditLine *el, wint_t c __attribute__((__unused__)))
288 {
289 wchar_t *lim = el->el_line.lastchar;
290
291 if (el->el_line.cursor >= lim ||
292 (el->el_line.cursor == lim - 1 &&
293 el->el_map.type == MAP_VI &&
294 el->el_chared.c_vcmd.action == NOP))
295 return CC_ERROR;
296
297 el->el_line.cursor += el->el_state.argument;
298 if (el->el_line.cursor > lim)
299 el->el_line.cursor = lim;
300
301 if (el->el_map.type == MAP_VI)
302 if (el->el_chared.c_vcmd.action != NOP) {
303 cv_delfini(el);
304 return CC_REFRESH;
305 }
306 return CC_CURSOR;
307 }
308
309
310 /* ed_prev_word():
311 * Move to the beginning of the current word
312 * [M-b] [b]
313 */
314 protected el_action_t
315 /*ARGSUSED*/
ed_prev_word(EditLine * el,wint_t c)316 ed_prev_word(EditLine *el, wint_t c __attribute__((__unused__)))
317 {
318
319 if (el->el_line.cursor == el->el_line.buffer)
320 return CC_ERROR;
321
322 el->el_line.cursor = c__prev_word(el->el_line.cursor,
323 el->el_line.buffer,
324 el->el_state.argument,
325 ce__isword);
326
327 if (el->el_map.type == MAP_VI)
328 if (el->el_chared.c_vcmd.action != NOP) {
329 cv_delfini(el);
330 return CC_REFRESH;
331 }
332 return CC_CURSOR;
333 }
334
335
336 /* ed_prev_char():
337 * Move to the left one character
338 * [^B] [^B]
339 */
340 protected el_action_t
341 /*ARGSUSED*/
ed_prev_char(EditLine * el,wint_t c)342 ed_prev_char(EditLine *el, wint_t c __attribute__((__unused__)))
343 {
344
345 if (el->el_line.cursor > el->el_line.buffer) {
346 el->el_line.cursor -= el->el_state.argument;
347 if (el->el_line.cursor < el->el_line.buffer)
348 el->el_line.cursor = el->el_line.buffer;
349
350 if (el->el_map.type == MAP_VI)
351 if (el->el_chared.c_vcmd.action != NOP) {
352 cv_delfini(el);
353 return CC_REFRESH;
354 }
355 return CC_CURSOR;
356 } else
357 return CC_ERROR;
358 }
359
360
361 /* ed_quoted_insert():
362 * Add the next character typed verbatim
363 * [^V] [^V]
364 */
365 protected el_action_t
ed_quoted_insert(EditLine * el,wint_t c)366 ed_quoted_insert(EditLine *el, wint_t c)
367 {
368 int num;
369
370 tty_quotemode(el);
371 num = el_wgetc(el, &c);
372 tty_noquotemode(el);
373 if (num == 1)
374 return ed_insert(el, c);
375 else
376 return ed_end_of_file(el, 0);
377 }
378
379
380 /* ed_digit():
381 * Adds to argument or enters a digit
382 */
383 protected el_action_t
ed_digit(EditLine * el,wint_t c)384 ed_digit(EditLine *el, wint_t c)
385 {
386
387 if (!iswdigit(c))
388 return CC_ERROR;
389
390 if (el->el_state.doingarg) {
391 /* if doing an arg, add this in... */
392 if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
393 el->el_state.argument = c - '0';
394 else {
395 if (el->el_state.argument > 1000000)
396 return CC_ERROR;
397 el->el_state.argument =
398 (el->el_state.argument * 10) + (c - '0');
399 }
400 return CC_ARGHACK;
401 }
402
403 return ed_insert(el, c);
404 }
405
406
407 /* ed_argument_digit():
408 * Digit that starts argument
409 * For ESC-n
410 */
411 protected el_action_t
ed_argument_digit(EditLine * el,wint_t c)412 ed_argument_digit(EditLine *el, wint_t c)
413 {
414
415 if (!iswdigit(c))
416 return CC_ERROR;
417
418 if (el->el_state.doingarg) {
419 if (el->el_state.argument > 1000000)
420 return CC_ERROR;
421 el->el_state.argument = (el->el_state.argument * 10) +
422 (c - '0');
423 } else { /* else starting an argument */
424 el->el_state.argument = c - '0';
425 el->el_state.doingarg = 1;
426 }
427 return CC_ARGHACK;
428 }
429
430
431 /* ed_unassigned():
432 * Indicates unbound character
433 * Bound to keys that are not assigned
434 */
435 protected el_action_t
436 /*ARGSUSED*/
ed_unassigned(EditLine * el,wint_t c)437 ed_unassigned(EditLine *el __attribute__((__unused__)),
438 wint_t c __attribute__((__unused__)))
439 {
440
441 return CC_ERROR;
442 }
443
444
445 /* ed_ignore():
446 * Input characters that have no effect
447 * [^C ^O ^Q ^S ^Z ^\ ^]] [^C ^O ^Q ^S ^\]
448 */
449 protected el_action_t
450 /*ARGSUSED*/
ed_ignore(EditLine * el,wint_t c)451 ed_ignore(EditLine *el __attribute__((__unused__)),
452 wint_t c __attribute__((__unused__)))
453 {
454
455 return CC_NORM;
456 }
457
458
459 /* ed_newline():
460 * Execute command
461 * [^J]
462 */
463 protected el_action_t
464 /*ARGSUSED*/
ed_newline(EditLine * el,wint_t c)465 ed_newline(EditLine *el, wint_t c __attribute__((__unused__)))
466 {
467
468 re_goto_bottom(el);
469 *el->el_line.lastchar++ = '\n';
470 *el->el_line.lastchar = '\0';
471 return CC_NEWLINE;
472 }
473
474
475 /* ed_delete_prev_char():
476 * Delete the character to the left of the cursor
477 * [^?]
478 */
479 protected el_action_t
480 /*ARGSUSED*/
ed_delete_prev_char(EditLine * el,wint_t c)481 ed_delete_prev_char(EditLine *el, wint_t c __attribute__((__unused__)))
482 {
483
484 if (el->el_line.cursor <= el->el_line.buffer)
485 return CC_ERROR;
486
487 c_delbefore(el, el->el_state.argument);
488 el->el_line.cursor -= el->el_state.argument;
489 if (el->el_line.cursor < el->el_line.buffer)
490 el->el_line.cursor = el->el_line.buffer;
491 return CC_REFRESH;
492 }
493
494
495 /* ed_clear_screen():
496 * Clear screen leaving current line at the top
497 * [^L]
498 */
499 protected el_action_t
500 /*ARGSUSED*/
ed_clear_screen(EditLine * el,wint_t c)501 ed_clear_screen(EditLine *el, wint_t c __attribute__((__unused__)))
502 {
503
504 terminal_clear_screen(el); /* clear the whole real screen */
505 re_clear_display(el); /* reset everything */
506 return CC_REFRESH;
507 }
508
509
510 /* ed_redisplay():
511 * Redisplay everything
512 * ^R
513 */
514 protected el_action_t
515 /*ARGSUSED*/
ed_redisplay(EditLine * el,wint_t c)516 ed_redisplay(EditLine *el __attribute__((__unused__)),
517 wint_t c __attribute__((__unused__)))
518 {
519
520 return CC_REDISPLAY;
521 }
522
523
524 /* ed_start_over():
525 * Erase current line and start from scratch
526 * [^G]
527 */
528 protected el_action_t
529 /*ARGSUSED*/
ed_start_over(EditLine * el,wint_t c)530 ed_start_over(EditLine *el, wint_t c __attribute__((__unused__)))
531 {
532
533 ch_reset(el, 0);
534 return CC_REFRESH;
535 }
536
537
538 /* ed_sequence_lead_in():
539 * First character in a bound sequence
540 * Placeholder for external keys
541 */
542 protected el_action_t
543 /*ARGSUSED*/
ed_sequence_lead_in(EditLine * el,wint_t c)544 ed_sequence_lead_in(EditLine *el __attribute__((__unused__)),
545 wint_t c __attribute__((__unused__)))
546 {
547
548 return CC_NORM;
549 }
550
551
552 /* ed_prev_history():
553 * Move to the previous history line
554 * [^P] [k]
555 */
556 protected el_action_t
557 /*ARGSUSED*/
ed_prev_history(EditLine * el,wint_t c)558 ed_prev_history(EditLine *el, wint_t c __attribute__((__unused__)))
559 {
560 char beep = 0;
561 int sv_event = el->el_history.eventno;
562
563 el->el_chared.c_undo.len = -1;
564 *el->el_line.lastchar = '\0'; /* just in case */
565
566 if (el->el_history.eventno == 0) { /* save the current buffer
567 * away */
568 (void) wcsncpy(el->el_history.buf, el->el_line.buffer,
569 EL_BUFSIZ);
570 el->el_history.last = el->el_history.buf +
571 (el->el_line.lastchar - el->el_line.buffer);
572 }
573 el->el_history.eventno += el->el_state.argument;
574
575 if (hist_get(el) == CC_ERROR) {
576 if (el->el_map.type == MAP_VI) {
577 el->el_history.eventno = sv_event;
578 }
579 beep = 1;
580 /* el->el_history.eventno was fixed by first call */
581 (void) hist_get(el);
582 }
583 if (beep)
584 return CC_REFRESH_BEEP;
585 return CC_REFRESH;
586 }
587
588
589 /* ed_next_history():
590 * Move to the next history line
591 * [^N] [j]
592 */
593 protected el_action_t
594 /*ARGSUSED*/
ed_next_history(EditLine * el,wint_t c)595 ed_next_history(EditLine *el, wint_t c __attribute__((__unused__)))
596 {
597 el_action_t beep = CC_REFRESH, rval;
598
599 el->el_chared.c_undo.len = -1;
600 *el->el_line.lastchar = '\0'; /* just in case */
601
602 el->el_history.eventno -= el->el_state.argument;
603
604 if (el->el_history.eventno < 0) {
605 el->el_history.eventno = 0;
606 beep = CC_REFRESH_BEEP;
607 }
608 rval = hist_get(el);
609 if (rval == CC_REFRESH)
610 return beep;
611 return rval;
612
613 }
614
615
616 /* ed_search_prev_history():
617 * Search previous in history for a line matching the current
618 * next search history [M-P] [K]
619 */
620 protected el_action_t
621 /*ARGSUSED*/
ed_search_prev_history(EditLine * el,wint_t c)622 ed_search_prev_history(EditLine *el, wint_t c __attribute__((__unused__)))
623 {
624 const wchar_t *hp;
625 int h;
626 int found = 0;
627
628 el->el_chared.c_vcmd.action = NOP;
629 el->el_chared.c_undo.len = -1;
630 *el->el_line.lastchar = '\0'; /* just in case */
631 if (el->el_history.eventno < 0) {
632 #ifdef DEBUG_EDIT
633 (void) fprintf(el->el_errfile,
634 "e_prev_search_hist(): eventno < 0;\n");
635 #endif
636 el->el_history.eventno = 0;
637 return CC_ERROR;
638 }
639 if (el->el_history.eventno == 0) {
640 (void) wcsncpy(el->el_history.buf, el->el_line.buffer,
641 EL_BUFSIZ);
642 el->el_history.last = el->el_history.buf +
643 (el->el_line.lastchar - el->el_line.buffer);
644 }
645 if (el->el_history.ref == NULL)
646 return CC_ERROR;
647
648 hp = HIST_FIRST(el);
649 if (hp == NULL)
650 return CC_ERROR;
651
652 c_setpat(el); /* Set search pattern !! */
653
654 for (h = 1; h <= el->el_history.eventno; h++)
655 hp = HIST_NEXT(el);
656
657 while (hp != NULL) {
658 #ifdef SDEBUG
659 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
660 #endif
661 if ((wcsncmp(hp, el->el_line.buffer, (size_t)
662 (el->el_line.lastchar - el->el_line.buffer)) ||
663 hp[el->el_line.lastchar - el->el_line.buffer]) &&
664 c_hmatch(el, hp)) {
665 found = 1;
666 break;
667 }
668 h++;
669 hp = HIST_NEXT(el);
670 }
671
672 if (!found) {
673 #ifdef SDEBUG
674 (void) fprintf(el->el_errfile, "not found\n");
675 #endif
676 return CC_ERROR;
677 }
678 el->el_history.eventno = h;
679
680 return hist_get(el);
681 }
682
683
684 /* ed_search_next_history():
685 * Search next in history for a line matching the current
686 * [M-N] [J]
687 */
688 protected el_action_t
689 /*ARGSUSED*/
ed_search_next_history(EditLine * el,wint_t c)690 ed_search_next_history(EditLine *el, wint_t c __attribute__((__unused__)))
691 {
692 const wchar_t *hp;
693 int h;
694 int found = 0;
695
696 el->el_chared.c_vcmd.action = NOP;
697 el->el_chared.c_undo.len = -1;
698 *el->el_line.lastchar = '\0'; /* just in case */
699
700 if (el->el_history.eventno == 0)
701 return CC_ERROR;
702
703 if (el->el_history.ref == NULL)
704 return CC_ERROR;
705
706 hp = HIST_FIRST(el);
707 if (hp == NULL)
708 return CC_ERROR;
709
710 c_setpat(el); /* Set search pattern !! */
711
712 for (h = 1; h < el->el_history.eventno && hp; h++) {
713 #ifdef SDEBUG
714 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
715 #endif
716 if ((wcsncmp(hp, el->el_line.buffer, (size_t)
717 (el->el_line.lastchar - el->el_line.buffer)) ||
718 hp[el->el_line.lastchar - el->el_line.buffer]) &&
719 c_hmatch(el, hp))
720 found = h;
721 hp = HIST_NEXT(el);
722 }
723
724 if (!found) { /* is it the current history number? */
725 if (!c_hmatch(el, el->el_history.buf)) {
726 #ifdef SDEBUG
727 (void) fprintf(el->el_errfile, "not found\n");
728 #endif
729 return CC_ERROR;
730 }
731 }
732 el->el_history.eventno = found;
733
734 return hist_get(el);
735 }
736
737
738 /* ed_prev_line():
739 * Move up one line
740 * Could be [k] [^p]
741 */
742 protected el_action_t
743 /*ARGSUSED*/
ed_prev_line(EditLine * el,wint_t c)744 ed_prev_line(EditLine *el, wint_t c __attribute__((__unused__)))
745 {
746 wchar_t *ptr;
747 int nchars = c_hpos(el);
748
749 /*
750 * Move to the line requested
751 */
752 if (*(ptr = el->el_line.cursor) == '\n')
753 ptr--;
754
755 for (; ptr >= el->el_line.buffer; ptr--)
756 if (*ptr == '\n' && --el->el_state.argument <= 0)
757 break;
758
759 if (el->el_state.argument > 0)
760 return CC_ERROR;
761
762 /*
763 * Move to the beginning of the line
764 */
765 for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
766 continue;
767
768 /*
769 * Move to the character requested
770 */
771 for (ptr++;
772 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
773 ptr++)
774 continue;
775
776 el->el_line.cursor = ptr;
777 return CC_CURSOR;
778 }
779
780
781 /* ed_next_line():
782 * Move down one line
783 * Could be [j] [^n]
784 */
785 protected el_action_t
786 /*ARGSUSED*/
ed_next_line(EditLine * el,wint_t c)787 ed_next_line(EditLine *el, wint_t c __attribute__((__unused__)))
788 {
789 wchar_t *ptr;
790 int nchars = c_hpos(el);
791
792 /*
793 * Move to the line requested
794 */
795 for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
796 if (*ptr == '\n' && --el->el_state.argument <= 0)
797 break;
798
799 if (el->el_state.argument > 0)
800 return CC_ERROR;
801
802 /*
803 * Move to the character requested
804 */
805 for (ptr++;
806 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
807 ptr++)
808 continue;
809
810 el->el_line.cursor = ptr;
811 return CC_CURSOR;
812 }
813
814
815 /* ed_command():
816 * Editline extended command
817 * [M-X] [:]
818 */
819 protected el_action_t
820 /*ARGSUSED*/
ed_command(EditLine * el,wint_t c)821 ed_command(EditLine *el, wint_t c __attribute__((__unused__)))
822 {
823 wchar_t tmpbuf[EL_BUFSIZ];
824 int tmplen;
825
826 tmplen = c_gets(el, tmpbuf, L"\n: ");
827 terminal__putc(el, '\n');
828
829 if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
830 terminal_beep(el);
831
832 el->el_map.current = el->el_map.key;
833 re_clear_display(el);
834 return CC_REFRESH;
835 }
836