1 /* $NetBSD: common.c,v 1.50 2024/06/30 16:29:42 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 1.50 2024/06/30 16:29:42 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 libedit_private 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 libedit_private 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 libedit_private 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 libedit_private 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 libedit_private 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 libedit_private 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 if (el->el_line.cursor > el->el_line.buffer)
226 el->el_line.cursor--;
227 #endif
228 }
229 return CC_CURSOR;
230 }
231
232
233 /* ed_move_to_beg():
234 * Move cursor to the beginning of line
235 * [^A] [^A]
236 */
237 libedit_private el_action_t
238 /*ARGSUSED*/
ed_move_to_beg(EditLine * el,wint_t c)239 ed_move_to_beg(EditLine *el, wint_t c __attribute__((__unused__)))
240 {
241
242 el->el_line.cursor = el->el_line.buffer;
243
244 if (el->el_map.type == MAP_VI) {
245 /* We want FIRST non space character */
246 while (iswspace(*el->el_line.cursor))
247 el->el_line.cursor++;
248 if (el->el_chared.c_vcmd.action != NOP) {
249 cv_delfini(el);
250 return CC_REFRESH;
251 }
252 }
253 return CC_CURSOR;
254 }
255
256
257 /* ed_transpose_chars():
258 * Exchange the character to the left of the cursor with the one under it
259 * [^T] [^T]
260 */
261 libedit_private el_action_t
ed_transpose_chars(EditLine * el,wint_t c)262 ed_transpose_chars(EditLine *el, wint_t c)
263 {
264
265 if (el->el_line.cursor < el->el_line.lastchar) {
266 if (el->el_line.lastchar <= &el->el_line.buffer[1])
267 return CC_ERROR;
268 else
269 el->el_line.cursor++;
270 }
271 if (el->el_line.cursor > &el->el_line.buffer[1]) {
272 /* must have at least two chars entered */
273 c = el->el_line.cursor[-2];
274 el->el_line.cursor[-2] = el->el_line.cursor[-1];
275 el->el_line.cursor[-1] = c;
276 return CC_REFRESH;
277 } else
278 return CC_ERROR;
279 }
280
281
282 /* ed_next_char():
283 * Move to the right one character
284 * [^F] [^F]
285 */
286 libedit_private el_action_t
287 /*ARGSUSED*/
ed_next_char(EditLine * el,wint_t c)288 ed_next_char(EditLine *el, wint_t c __attribute__((__unused__)))
289 {
290 wchar_t *lim = el->el_line.lastchar;
291
292 if (el->el_line.cursor >= lim ||
293 (el->el_line.cursor == lim - 1 &&
294 el->el_map.type == MAP_VI &&
295 el->el_chared.c_vcmd.action == NOP))
296 return CC_ERROR;
297
298 el->el_line.cursor += el->el_state.argument;
299 if (el->el_line.cursor > lim)
300 el->el_line.cursor = lim;
301
302 if (el->el_map.type == MAP_VI)
303 if (el->el_chared.c_vcmd.action != NOP) {
304 cv_delfini(el);
305 return CC_REFRESH;
306 }
307 return CC_CURSOR;
308 }
309
310
311 /* ed_prev_word():
312 * Move to the beginning of the current word
313 * [M-b] [b]
314 */
315 libedit_private el_action_t
316 /*ARGSUSED*/
ed_prev_word(EditLine * el,wint_t c)317 ed_prev_word(EditLine *el, wint_t c __attribute__((__unused__)))
318 {
319
320 if (el->el_line.cursor == el->el_line.buffer)
321 return CC_ERROR;
322
323 el->el_line.cursor = c__prev_word(el->el_line.cursor,
324 el->el_line.buffer,
325 el->el_state.argument,
326 ce__isword);
327
328 if (el->el_map.type == MAP_VI)
329 if (el->el_chared.c_vcmd.action != NOP) {
330 cv_delfini(el);
331 return CC_REFRESH;
332 }
333 return CC_CURSOR;
334 }
335
336
337 /* ed_prev_char():
338 * Move to the left one character
339 * [^B] [^B]
340 */
341 libedit_private el_action_t
342 /*ARGSUSED*/
ed_prev_char(EditLine * el,wint_t c)343 ed_prev_char(EditLine *el, wint_t c __attribute__((__unused__)))
344 {
345
346 if (el->el_line.cursor > el->el_line.buffer) {
347 el->el_line.cursor -= el->el_state.argument;
348 if (el->el_line.cursor < el->el_line.buffer)
349 el->el_line.cursor = el->el_line.buffer;
350
351 if (el->el_map.type == MAP_VI)
352 if (el->el_chared.c_vcmd.action != NOP) {
353 cv_delfini(el);
354 return CC_REFRESH;
355 }
356 return CC_CURSOR;
357 } else
358 return CC_ERROR;
359 }
360
361
362 /* ed_quoted_insert():
363 * Add the next character typed verbatim
364 * [^V] [^V]
365 */
366 libedit_private el_action_t
367 /*ARGSUSED*/
ed_quoted_insert(EditLine * el,wint_t c)368 ed_quoted_insert(EditLine *el, wint_t c __attribute__((__unused__)))
369 {
370 int num;
371 wchar_t ch;
372
373 tty_quotemode(el);
374 num = el_wgetc(el, &ch);
375 tty_noquotemode(el);
376 if (num == 1)
377 return ed_insert(el, ch);
378 else
379 return ed_end_of_file(el, 0);
380 }
381
382
383 /* ed_digit():
384 * Adds to argument or enters a digit
385 */
386 libedit_private el_action_t
ed_digit(EditLine * el,wint_t c)387 ed_digit(EditLine *el, wint_t c)
388 {
389
390 if (!iswdigit(c))
391 return CC_ERROR;
392
393 if (el->el_state.doingarg) {
394 /* if doing an arg, add this in... */
395 if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
396 el->el_state.argument = c - '0';
397 else {
398 if (el->el_state.argument > 1000000)
399 return CC_ERROR;
400 el->el_state.argument =
401 (el->el_state.argument * 10) + (c - '0');
402 }
403 return CC_ARGHACK;
404 }
405
406 return ed_insert(el, c);
407 }
408
409
410 /* ed_argument_digit():
411 * Digit that starts argument
412 * For ESC-n
413 */
414 libedit_private el_action_t
ed_argument_digit(EditLine * el,wint_t c)415 ed_argument_digit(EditLine *el, wint_t c)
416 {
417
418 if (!iswdigit(c))
419 return CC_ERROR;
420
421 if (el->el_state.doingarg) {
422 if (el->el_state.argument > 1000000)
423 return CC_ERROR;
424 el->el_state.argument = (el->el_state.argument * 10) +
425 (c - '0');
426 } else { /* else starting an argument */
427 el->el_state.argument = c - '0';
428 el->el_state.doingarg = 1;
429 }
430 return CC_ARGHACK;
431 }
432
433
434 /* ed_unassigned():
435 * Indicates unbound character
436 * Bound to keys that are not assigned
437 */
438 libedit_private el_action_t
439 /*ARGSUSED*/
ed_unassigned(EditLine * el,wint_t c)440 ed_unassigned(EditLine *el __attribute__((__unused__)),
441 wint_t c __attribute__((__unused__)))
442 {
443
444 return CC_ERROR;
445 }
446
447
448 /* ed_ignore():
449 * Input characters that have no effect
450 * [^C ^O ^Q ^S ^Z ^\ ^]] [^C ^O ^Q ^S ^\]
451 */
452 libedit_private el_action_t
453 /*ARGSUSED*/
ed_ignore(EditLine * el,wint_t c)454 ed_ignore(EditLine *el __attribute__((__unused__)),
455 wint_t c __attribute__((__unused__)))
456 {
457
458 return CC_NORM;
459 }
460
461
462 /* ed_newline():
463 * Execute command
464 * [^J]
465 */
466 libedit_private el_action_t
467 /*ARGSUSED*/
ed_newline(EditLine * el,wint_t c)468 ed_newline(EditLine *el, wint_t c __attribute__((__unused__)))
469 {
470
471 re_goto_bottom(el);
472 *el->el_line.lastchar++ = '\n';
473 *el->el_line.lastchar = '\0';
474 return CC_NEWLINE;
475 }
476
477
478 /* ed_delete_prev_char():
479 * Delete the character to the left of the cursor
480 * [^?]
481 */
482 libedit_private el_action_t
483 /*ARGSUSED*/
ed_delete_prev_char(EditLine * el,wint_t c)484 ed_delete_prev_char(EditLine *el, wint_t c __attribute__((__unused__)))
485 {
486
487 if (el->el_line.cursor <= el->el_line.buffer)
488 return CC_ERROR;
489
490 c_delbefore(el, el->el_state.argument);
491 el->el_line.cursor -= el->el_state.argument;
492 if (el->el_line.cursor < el->el_line.buffer)
493 el->el_line.cursor = el->el_line.buffer;
494 return CC_REFRESH;
495 }
496
497
498 /* ed_clear_screen():
499 * Clear screen leaving current line at the top
500 * [^L]
501 */
502 libedit_private el_action_t
503 /*ARGSUSED*/
ed_clear_screen(EditLine * el,wint_t c)504 ed_clear_screen(EditLine *el, wint_t c __attribute__((__unused__)))
505 {
506
507 terminal_clear_screen(el); /* clear the whole real screen */
508 re_clear_display(el); /* reset everything */
509 return CC_REFRESH;
510 }
511
512
513 /* ed_redisplay():
514 * Redisplay everything
515 * ^R
516 */
517 libedit_private el_action_t
518 /*ARGSUSED*/
ed_redisplay(EditLine * el,wint_t c)519 ed_redisplay(EditLine *el __attribute__((__unused__)),
520 wint_t c __attribute__((__unused__)))
521 {
522
523 return CC_REDISPLAY;
524 }
525
526
527 /* ed_start_over():
528 * Erase current line and start from scratch
529 * [^G]
530 */
531 libedit_private el_action_t
532 /*ARGSUSED*/
ed_start_over(EditLine * el,wint_t c)533 ed_start_over(EditLine *el, wint_t c __attribute__((__unused__)))
534 {
535
536 ch_reset(el);
537 return CC_REFRESH;
538 }
539
540
541 /* ed_sequence_lead_in():
542 * First character in a bound sequence
543 * Placeholder for external keys
544 */
545 libedit_private el_action_t
546 /*ARGSUSED*/
ed_sequence_lead_in(EditLine * el,wint_t c)547 ed_sequence_lead_in(EditLine *el __attribute__((__unused__)),
548 wint_t c __attribute__((__unused__)))
549 {
550
551 return CC_NORM;
552 }
553
554
555 /* ed_prev_history():
556 * Move to the previous history line
557 * [^P] [k]
558 */
559 libedit_private el_action_t
560 /*ARGSUSED*/
ed_prev_history(EditLine * el,wint_t c)561 ed_prev_history(EditLine *el, wint_t c __attribute__((__unused__)))
562 {
563 char beep = 0;
564 int sv_event = el->el_history.eventno;
565
566 el->el_chared.c_undo.len = -1;
567 *el->el_line.lastchar = '\0'; /* just in case */
568
569 if (el->el_history.eventno == 0) { /* save the current buffer
570 * away */
571 (void) wcsncpy(el->el_history.buf, el->el_line.buffer,
572 EL_BUFSIZ);
573 el->el_history.last = el->el_history.buf +
574 (el->el_line.lastchar - el->el_line.buffer);
575 }
576 el->el_history.eventno += el->el_state.argument;
577
578 if (hist_get(el) == CC_ERROR) {
579 if (el->el_map.type == MAP_VI) {
580 el->el_history.eventno = sv_event;
581 }
582 beep = 1;
583 /* el->el_history.eventno was fixed by first call */
584 (void) hist_get(el);
585 }
586 if (beep)
587 return CC_REFRESH_BEEP;
588 return CC_REFRESH;
589 }
590
591
592 /* ed_next_history():
593 * Move to the next history line
594 * [^N] [j]
595 */
596 libedit_private el_action_t
597 /*ARGSUSED*/
ed_next_history(EditLine * el,wint_t c)598 ed_next_history(EditLine *el, wint_t c __attribute__((__unused__)))
599 {
600 el_action_t beep = CC_REFRESH, rval;
601
602 el->el_chared.c_undo.len = -1;
603 *el->el_line.lastchar = '\0'; /* just in case */
604
605 el->el_history.eventno -= el->el_state.argument;
606
607 if (el->el_history.eventno < 0) {
608 el->el_history.eventno = 0;
609 beep = CC_REFRESH_BEEP;
610 }
611 rval = hist_get(el);
612 if (rval == CC_REFRESH)
613 return beep;
614 return rval;
615
616 }
617
618
619 /* ed_search_prev_history():
620 * Search previous in history for a line matching the current
621 * next search history [M-P] [K]
622 */
623 libedit_private el_action_t
624 /*ARGSUSED*/
ed_search_prev_history(EditLine * el,wint_t c)625 ed_search_prev_history(EditLine *el, wint_t c __attribute__((__unused__)))
626 {
627 const wchar_t *hp;
628 int h;
629 int found = 0;
630
631 el->el_chared.c_vcmd.action = NOP;
632 el->el_chared.c_undo.len = -1;
633 *el->el_line.lastchar = '\0'; /* just in case */
634 if (el->el_history.eventno < 0) {
635 #ifdef DEBUG_EDIT
636 (void) fprintf(el->el_errfile,
637 "e_prev_search_hist(): eventno < 0;\n");
638 #endif
639 el->el_history.eventno = 0;
640 return CC_ERROR;
641 }
642 if (el->el_history.eventno == 0) {
643 (void) wcsncpy(el->el_history.buf, el->el_line.buffer,
644 EL_BUFSIZ);
645 el->el_history.last = el->el_history.buf +
646 (el->el_line.lastchar - el->el_line.buffer);
647 }
648 if (el->el_history.ref == NULL)
649 return CC_ERROR;
650
651 hp = HIST_FIRST(el);
652 if (hp == NULL)
653 return CC_ERROR;
654
655 c_setpat(el); /* Set search pattern !! */
656
657 for (h = 1; h <= el->el_history.eventno; h++)
658 hp = HIST_NEXT(el);
659
660 while (hp != NULL) {
661 #ifdef SDEBUG
662 (void) fprintf(el->el_errfile, "Comparing with \"%ls\"\n", hp);
663 #endif
664 if ((wcsncmp(hp, el->el_line.buffer, (size_t)
665 (el->el_line.lastchar - el->el_line.buffer)) ||
666 hp[el->el_line.lastchar - el->el_line.buffer]) &&
667 c_hmatch(el, hp)) {
668 found = 1;
669 break;
670 }
671 h++;
672 hp = HIST_NEXT(el);
673 }
674
675 if (!found) {
676 #ifdef SDEBUG
677 (void) fprintf(el->el_errfile, "not found\n");
678 #endif
679 return CC_ERROR;
680 }
681 el->el_history.eventno = h;
682
683 return hist_get(el);
684 }
685
686
687 /* ed_search_next_history():
688 * Search next in history for a line matching the current
689 * [M-N] [J]
690 */
691 libedit_private el_action_t
692 /*ARGSUSED*/
ed_search_next_history(EditLine * el,wint_t c)693 ed_search_next_history(EditLine *el, wint_t c __attribute__((__unused__)))
694 {
695 const wchar_t *hp;
696 int h;
697 int found = 0;
698
699 el->el_chared.c_vcmd.action = NOP;
700 el->el_chared.c_undo.len = -1;
701 *el->el_line.lastchar = '\0'; /* just in case */
702
703 if (el->el_history.eventno == 0)
704 return CC_ERROR;
705
706 if (el->el_history.ref == NULL)
707 return CC_ERROR;
708
709 hp = HIST_FIRST(el);
710 if (hp == NULL)
711 return CC_ERROR;
712
713 c_setpat(el); /* Set search pattern !! */
714
715 for (h = 1; h < el->el_history.eventno && hp; h++) {
716 #ifdef SDEBUG
717 (void) fprintf(el->el_errfile, "Comparing with \"%ls\"\n", hp);
718 #endif
719 if ((wcsncmp(hp, el->el_line.buffer, (size_t)
720 (el->el_line.lastchar - el->el_line.buffer)) ||
721 hp[el->el_line.lastchar - el->el_line.buffer]) &&
722 c_hmatch(el, hp))
723 found = h;
724 hp = HIST_NEXT(el);
725 }
726
727 if (!found) { /* is it the current history number? */
728 if (!c_hmatch(el, el->el_history.buf)) {
729 #ifdef SDEBUG
730 (void) fprintf(el->el_errfile, "not found\n");
731 #endif
732 return CC_ERROR;
733 }
734 }
735 el->el_history.eventno = found;
736
737 return hist_get(el);
738 }
739
740
741 /* ed_prev_line():
742 * Move up one line
743 * Could be [k] [^p]
744 */
745 libedit_private el_action_t
746 /*ARGSUSED*/
ed_prev_line(EditLine * el,wint_t c)747 ed_prev_line(EditLine *el, wint_t c __attribute__((__unused__)))
748 {
749 wchar_t *ptr;
750 int nchars = c_hpos(el);
751
752 /*
753 * Move to the line requested
754 */
755 if (*(ptr = el->el_line.cursor) == '\n')
756 ptr--;
757
758 for (; ptr >= el->el_line.buffer; ptr--)
759 if (*ptr == '\n' && --el->el_state.argument <= 0)
760 break;
761
762 if (el->el_state.argument > 0)
763 return CC_ERROR;
764
765 /*
766 * Move to the beginning of the line
767 */
768 for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
769 continue;
770
771 /*
772 * Move to the character requested
773 */
774 for (ptr++;
775 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
776 ptr++)
777 continue;
778
779 el->el_line.cursor = ptr;
780 return CC_CURSOR;
781 }
782
783
784 /* ed_next_line():
785 * Move down one line
786 * Could be [j] [^n]
787 */
788 libedit_private el_action_t
789 /*ARGSUSED*/
ed_next_line(EditLine * el,wint_t c)790 ed_next_line(EditLine *el, wint_t c __attribute__((__unused__)))
791 {
792 wchar_t *ptr;
793 int nchars = c_hpos(el);
794
795 /*
796 * Move to the line requested
797 */
798 for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
799 if (*ptr == '\n' && --el->el_state.argument <= 0)
800 break;
801
802 if (el->el_state.argument > 0)
803 return CC_ERROR;
804
805 /*
806 * Move to the character requested
807 */
808 for (ptr++;
809 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
810 ptr++)
811 continue;
812
813 el->el_line.cursor = ptr;
814 return CC_CURSOR;
815 }
816
817
818 /* ed_command():
819 * Editline extended command
820 * [M-X] [:]
821 */
822 libedit_private el_action_t
823 /*ARGSUSED*/
ed_command(EditLine * el,wint_t c)824 ed_command(EditLine *el, wint_t c __attribute__((__unused__)))
825 {
826 wchar_t tmpbuf[EL_BUFSIZ];
827 int tmplen;
828
829 tmplen = c_gets(el, tmpbuf, L"\n: ");
830 terminal__putc(el, '\n');
831
832 if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
833 terminal_beep(el);
834
835 el->el_map.current = el->el_map.key;
836 re_clear_display(el);
837 return CC_REFRESH;
838 }
839