1 /*-
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Christos Zoulas of Cornell University.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $NetBSD: common.c,v 1.23 2009/02/27 04:18:45 msaitoh Exp $
33 */
34
35 #if !defined(lint) && !defined(SCCSID)
36 static char sccsid[] = "@(#)common.c 8.1 (Berkeley) 6/4/93";
37 #endif /* not lint && not SCCSID */
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD: stable/9/lib/libedit/common.c 268783 2014-07-17 02:22:03Z pfg $");
40
41 /*
42 * common.c: Common Editor functions
43 */
44 #include "sys.h"
45 #include "el.h"
46
47 /* ed_end_of_file():
48 * Indicate end of file
49 * [^D]
50 */
51 protected el_action_t
52 /*ARGSUSED*/
ed_end_of_file(EditLine * el,int c __unused)53 ed_end_of_file(EditLine *el, int c __unused)
54 {
55
56 re_goto_bottom(el);
57 *el->el_line.lastchar = '\0';
58 return (CC_EOF);
59 }
60
61
62 /* ed_insert():
63 * Add character to the line
64 * Insert a character [bound to all insert keys]
65 */
66 protected el_action_t
ed_insert(EditLine * el,int c)67 ed_insert(EditLine *el, int c)
68 {
69 int count = el->el_state.argument;
70
71 if (c == '\0')
72 return (CC_ERROR);
73
74 if (el->el_line.lastchar + el->el_state.argument >=
75 el->el_line.limit) {
76 /* end of buffer space, try to allocate more */
77 if (!ch_enlargebufs(el, (size_t) count))
78 return CC_ERROR; /* error allocating more */
79 }
80
81 if (count == 1) {
82 if (el->el_state.inputmode == MODE_INSERT
83 || el->el_line.cursor >= el->el_line.lastchar)
84 c_insert(el, 1);
85
86 *el->el_line.cursor++ = c;
87 re_fastaddc(el); /* fast refresh for one char. */
88 } else {
89 if (el->el_state.inputmode != MODE_REPLACE_1)
90 c_insert(el, el->el_state.argument);
91
92 while (count-- && el->el_line.cursor < el->el_line.lastchar)
93 *el->el_line.cursor++ = c;
94 re_refresh(el);
95 }
96
97 if (el->el_state.inputmode == MODE_REPLACE_1)
98 return vi_command_mode(el, 0);
99
100 return (CC_NORM);
101 }
102
103
104 /* ed_delete_prev_word():
105 * Delete from beginning of current word to cursor
106 * [M-^?] [^W]
107 */
108 protected el_action_t
109 /*ARGSUSED*/
ed_delete_prev_word(EditLine * el,int c __unused)110 ed_delete_prev_word(EditLine *el, int c __unused)
111 {
112 char *cp, *p, *kp;
113
114 if (el->el_line.cursor == el->el_line.buffer)
115 return (CC_ERROR);
116
117 cp = c__prev_word(el->el_line.cursor, el->el_line.buffer,
118 el->el_state.argument, ce__isword);
119
120 for (p = cp, kp = el->el_chared.c_kill.buf; p < el->el_line.cursor; p++)
121 *kp++ = *p;
122 el->el_chared.c_kill.last = kp;
123
124 c_delbefore(el, (int)(el->el_line.cursor - cp));/* delete before dot */
125 el->el_line.cursor = cp;
126 if (el->el_line.cursor < el->el_line.buffer)
127 el->el_line.cursor = el->el_line.buffer; /* bounds check */
128 return (CC_REFRESH);
129 }
130
131
132 /* ed_delete_next_char():
133 * Delete character under cursor
134 * [^D] [x]
135 */
136 protected el_action_t
137 /*ARGSUSED*/
ed_delete_next_char(EditLine * el,int c)138 ed_delete_next_char(EditLine *el, int c)
139 {
140 #ifdef notdef /* XXX */
141 #define EL el->el_line
142 (void) fprintf(el->el_errlfile,
143 "\nD(b: %x(%s) c: %x(%s) last: %x(%s) limit: %x(%s)\n",
144 EL.buffer, EL.buffer, EL.cursor, EL.cursor, EL.lastchar,
145 EL.lastchar, EL.limit, EL.limit);
146 #endif
147 if (el->el_line.cursor == el->el_line.lastchar) {
148 /* if I'm at the end */
149 if (el->el_map.type == MAP_VI) {
150 if (el->el_line.cursor == el->el_line.buffer) {
151 /* if I'm also at the beginning */
152 #ifdef KSHVI
153 return (CC_ERROR);
154 #else
155 /* then do an EOF */
156 term_writechar(el, c);
157 return (CC_EOF);
158 #endif
159 } else {
160 #ifdef KSHVI
161 el->el_line.cursor--;
162 #else
163 return (CC_ERROR);
164 #endif
165 }
166 } else
167 return (CC_ERROR);
168 }
169 c_delafter(el, el->el_state.argument); /* delete after dot */
170 if (el->el_map.type == MAP_VI &&
171 el->el_line.cursor >= el->el_line.lastchar &&
172 el->el_line.cursor > el->el_line.buffer)
173 /* bounds check */
174 el->el_line.cursor = el->el_line.lastchar - 1;
175 return (CC_REFRESH);
176 }
177
178
179 /* ed_kill_line():
180 * Cut to the end of line
181 * [^K] [^K]
182 */
183 protected el_action_t
184 /*ARGSUSED*/
ed_kill_line(EditLine * el,int c __unused)185 ed_kill_line(EditLine *el, int c __unused)
186 {
187 char *kp, *cp;
188
189 cp = el->el_line.cursor;
190 kp = el->el_chared.c_kill.buf;
191 while (cp < el->el_line.lastchar)
192 *kp++ = *cp++; /* copy it */
193 el->el_chared.c_kill.last = kp;
194 /* zap! -- delete to end */
195 el->el_line.lastchar = el->el_line.cursor;
196 return (CC_REFRESH);
197 }
198
199
200 /* ed_move_to_end():
201 * Move cursor to the end of line
202 * [^E] [^E]
203 */
204 protected el_action_t
205 /*ARGSUSED*/
ed_move_to_end(EditLine * el,int c __unused)206 ed_move_to_end(EditLine *el, int c __unused)
207 {
208
209 el->el_line.cursor = el->el_line.lastchar;
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 }
216 return (CC_CURSOR);
217 }
218
219
220 /* ed_move_to_beg():
221 * Move cursor to the beginning of line
222 * [^A] [^A]
223 */
224 protected el_action_t
225 /*ARGSUSED*/
ed_move_to_beg(EditLine * el,int c __unused)226 ed_move_to_beg(EditLine *el, int c __unused)
227 {
228
229 el->el_line.cursor = el->el_line.buffer;
230
231 if (el->el_map.type == MAP_VI) {
232 /* We want FIRST non space character */
233 while (isspace((unsigned char) *el->el_line.cursor))
234 el->el_line.cursor++;
235 if (el->el_chared.c_vcmd.action != NOP) {
236 cv_delfini(el);
237 return (CC_REFRESH);
238 }
239 }
240 return (CC_CURSOR);
241 }
242
243
244 /* ed_transpose_chars():
245 * Exchange the character to the left of the cursor with the one under it
246 * [^T] [^T]
247 */
248 protected el_action_t
ed_transpose_chars(EditLine * el,int c)249 ed_transpose_chars(EditLine *el, int c)
250 {
251
252 if (el->el_line.cursor < el->el_line.lastchar) {
253 if (el->el_line.lastchar <= &el->el_line.buffer[1])
254 return (CC_ERROR);
255 else
256 el->el_line.cursor++;
257 }
258 if (el->el_line.cursor > &el->el_line.buffer[1]) {
259 /* must have at least two chars entered */
260 c = el->el_line.cursor[-2];
261 el->el_line.cursor[-2] = el->el_line.cursor[-1];
262 el->el_line.cursor[-1] = c;
263 return (CC_REFRESH);
264 } else
265 return (CC_ERROR);
266 }
267
268
269 /* ed_next_char():
270 * Move to the right one character
271 * [^F] [^F]
272 */
273 protected el_action_t
274 /*ARGSUSED*/
ed_next_char(EditLine * el,int c __unused)275 ed_next_char(EditLine *el, int c __unused)
276 {
277 char *lim = el->el_line.lastchar;
278
279 if (el->el_line.cursor >= lim ||
280 (el->el_line.cursor == lim - 1 &&
281 el->el_map.type == MAP_VI &&
282 el->el_chared.c_vcmd.action == NOP))
283 return (CC_ERROR);
284
285 el->el_line.cursor += el->el_state.argument;
286 if (el->el_line.cursor > lim)
287 el->el_line.cursor = lim;
288
289 if (el->el_map.type == MAP_VI)
290 if (el->el_chared.c_vcmd.action != NOP) {
291 cv_delfini(el);
292 return (CC_REFRESH);
293 }
294 return (CC_CURSOR);
295 }
296
297
298 /* ed_prev_word():
299 * Move to the beginning of the current word
300 * [M-b] [b]
301 */
302 protected el_action_t
303 /*ARGSUSED*/
ed_prev_word(EditLine * el,int c __unused)304 ed_prev_word(EditLine *el, int c __unused)
305 {
306
307 if (el->el_line.cursor == el->el_line.buffer)
308 return (CC_ERROR);
309
310 el->el_line.cursor = c__prev_word(el->el_line.cursor,
311 el->el_line.buffer,
312 el->el_state.argument,
313 ce__isword);
314
315 if (el->el_map.type == MAP_VI)
316 if (el->el_chared.c_vcmd.action != NOP) {
317 cv_delfini(el);
318 return (CC_REFRESH);
319 }
320 return (CC_CURSOR);
321 }
322
323
324 /* ed_prev_char():
325 * Move to the left one character
326 * [^B] [^B]
327 */
328 protected el_action_t
329 /*ARGSUSED*/
ed_prev_char(EditLine * el,int c __unused)330 ed_prev_char(EditLine *el, int c __unused)
331 {
332
333 if (el->el_line.cursor > el->el_line.buffer) {
334 el->el_line.cursor -= el->el_state.argument;
335 if (el->el_line.cursor < el->el_line.buffer)
336 el->el_line.cursor = el->el_line.buffer;
337
338 if (el->el_map.type == MAP_VI)
339 if (el->el_chared.c_vcmd.action != NOP) {
340 cv_delfini(el);
341 return (CC_REFRESH);
342 }
343 return (CC_CURSOR);
344 } else
345 return (CC_ERROR);
346 }
347
348
349 /* ed_quoted_insert():
350 * Add the next character typed verbatim
351 * [^V] [^V]
352 */
353 protected el_action_t
ed_quoted_insert(EditLine * el,int c)354 ed_quoted_insert(EditLine *el, int c)
355 {
356 int num;
357 char tc;
358
359 tty_quotemode(el);
360 num = el_getc(el, &tc);
361 c = (unsigned char) tc;
362 tty_noquotemode(el);
363 if (num == 1)
364 return (ed_insert(el, c));
365 else
366 return (ed_end_of_file(el, 0));
367 }
368
369
370 /* ed_digit():
371 * Adds to argument or enters a digit
372 */
373 protected el_action_t
ed_digit(EditLine * el,int c)374 ed_digit(EditLine *el, int c)
375 {
376
377 if (!isdigit((unsigned char) c))
378 return (CC_ERROR);
379
380 if (el->el_state.doingarg) {
381 /* if doing an arg, add this in... */
382 if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
383 el->el_state.argument = c - '0';
384 else {
385 if (el->el_state.argument > 1000000)
386 return (CC_ERROR);
387 el->el_state.argument =
388 (el->el_state.argument * 10) + (c - '0');
389 }
390 return (CC_ARGHACK);
391 }
392
393 return ed_insert(el, c);
394 }
395
396
397 /* ed_argument_digit():
398 * Digit that starts argument
399 * For ESC-n
400 */
401 protected el_action_t
ed_argument_digit(EditLine * el,int c)402 ed_argument_digit(EditLine *el, int c)
403 {
404
405 if (!isdigit((unsigned char) c))
406 return (CC_ERROR);
407
408 if (el->el_state.doingarg) {
409 if (el->el_state.argument > 1000000)
410 return (CC_ERROR);
411 el->el_state.argument = (el->el_state.argument * 10) +
412 (c - '0');
413 } else { /* else starting an argument */
414 el->el_state.argument = c - '0';
415 el->el_state.doingarg = 1;
416 }
417 return (CC_ARGHACK);
418 }
419
420
421 /* ed_unassigned():
422 * Indicates unbound character
423 * Bound to keys that are not assigned
424 */
425 protected el_action_t
426 /*ARGSUSED*/
ed_unassigned(EditLine * el,int c __unused)427 ed_unassigned(EditLine *el, int c __unused)
428 {
429
430 return (CC_ERROR);
431 }
432
433
434 /**
435 ** TTY key handling.
436 **/
437
438 /* ed_tty_sigint():
439 * Tty interrupt character
440 * [^C]
441 */
442 protected el_action_t
443 /*ARGSUSED*/
ed_tty_sigint(EditLine * el __unused,int c __unused)444 ed_tty_sigint(EditLine *el __unused,
445 int c __unused)
446 {
447
448 return (CC_NORM);
449 }
450
451
452 /* ed_tty_dsusp():
453 * Tty delayed suspend character
454 * [^Y]
455 */
456 protected el_action_t
457 /*ARGSUSED*/
ed_tty_dsusp(EditLine * el __unused,int c __unused)458 ed_tty_dsusp(EditLine *el __unused,
459 int c __unused)
460 {
461
462 return (CC_NORM);
463 }
464
465
466 /* ed_tty_flush_output():
467 * Tty flush output characters
468 * [^O]
469 */
470 protected el_action_t
471 /*ARGSUSED*/
ed_tty_flush_output(EditLine * el __unused,int c __unused)472 ed_tty_flush_output(EditLine *el __unused,
473 int c __unused)
474 {
475
476 return (CC_NORM);
477 }
478
479
480 /* ed_tty_sigquit():
481 * Tty quit character
482 * [^\]
483 */
484 protected el_action_t
485 /*ARGSUSED*/
ed_tty_sigquit(EditLine * el __unused,int c __unused)486 ed_tty_sigquit(EditLine *el __unused,
487 int c __unused)
488 {
489
490 return (CC_NORM);
491 }
492
493
494 /* ed_tty_sigtstp():
495 * Tty suspend character
496 * [^Z]
497 */
498 protected el_action_t
499 /*ARGSUSED*/
ed_tty_sigtstp(EditLine * el __unused,int c __unused)500 ed_tty_sigtstp(EditLine *el __unused,
501 int c __unused)
502 {
503
504 return (CC_NORM);
505 }
506
507
508 /* ed_tty_stop_output():
509 * Tty disallow output characters
510 * [^S]
511 */
512 protected el_action_t
513 /*ARGSUSED*/
ed_tty_stop_output(EditLine * el __unused,int c __unused)514 ed_tty_stop_output(EditLine *el __unused,
515 int c __unused)
516 {
517
518 return (CC_NORM);
519 }
520
521
522 /* ed_tty_start_output():
523 * Tty allow output characters
524 * [^Q]
525 */
526 protected el_action_t
527 /*ARGSUSED*/
ed_tty_start_output(EditLine * el __unused,int c __unused)528 ed_tty_start_output(EditLine *el __unused,
529 int c __unused)
530 {
531
532 return (CC_NORM);
533 }
534
535
536 /* ed_newline():
537 * Execute command
538 * [^J]
539 */
540 protected el_action_t
541 /*ARGSUSED*/
ed_newline(EditLine * el,int c __unused)542 ed_newline(EditLine *el, int c __unused)
543 {
544
545 re_goto_bottom(el);
546 *el->el_line.lastchar++ = '\n';
547 *el->el_line.lastchar = '\0';
548 return (CC_NEWLINE);
549 }
550
551
552 /* ed_delete_prev_char():
553 * Delete the character to the left of the cursor
554 * [^?]
555 */
556 protected el_action_t
557 /*ARGSUSED*/
ed_delete_prev_char(EditLine * el,int c __unused)558 ed_delete_prev_char(EditLine *el, int c __unused)
559 {
560
561 if (el->el_line.cursor <= el->el_line.buffer)
562 return (CC_ERROR);
563
564 c_delbefore(el, el->el_state.argument);
565 el->el_line.cursor -= el->el_state.argument;
566 if (el->el_line.cursor < el->el_line.buffer)
567 el->el_line.cursor = el->el_line.buffer;
568 return (CC_REFRESH);
569 }
570
571
572 /* ed_clear_screen():
573 * Clear screen leaving current line at the top
574 * [^L]
575 */
576 protected el_action_t
577 /*ARGSUSED*/
ed_clear_screen(EditLine * el,int c __unused)578 ed_clear_screen(EditLine *el, int c __unused)
579 {
580
581 term_clear_screen(el); /* clear the whole real screen */
582 re_clear_display(el); /* reset everything */
583 return (CC_REFRESH);
584 }
585
586
587 /* ed_redisplay():
588 * Redisplay everything
589 * ^R
590 */
591 protected el_action_t
592 /*ARGSUSED*/
ed_redisplay(EditLine * el __unused,int c __unused)593 ed_redisplay(EditLine *el __unused,
594 int c __unused)
595 {
596
597 return (CC_REDISPLAY);
598 }
599
600
601 /* ed_start_over():
602 * Erase current line and start from scratch
603 * [^G]
604 */
605 protected el_action_t
606 /*ARGSUSED*/
ed_start_over(EditLine * el,int c __unused)607 ed_start_over(EditLine *el, int c __unused)
608 {
609
610 ch_reset(el, 0);
611 return (CC_REFRESH);
612 }
613
614
615 /* ed_sequence_lead_in():
616 * First character in a bound sequence
617 * Placeholder for external keys
618 */
619 protected el_action_t
620 /*ARGSUSED*/
ed_sequence_lead_in(EditLine * el __unused,int c __unused)621 ed_sequence_lead_in(EditLine *el __unused,
622 int c __unused)
623 {
624
625 return (CC_NORM);
626 }
627
628
629 /* ed_prev_history():
630 * Move to the previous history line
631 * [^P] [k]
632 */
633 protected el_action_t
634 /*ARGSUSED*/
ed_prev_history(EditLine * el,int c __unused)635 ed_prev_history(EditLine *el, int c __unused)
636 {
637 char beep = 0;
638 int sv_event = el->el_history.eventno;
639
640 el->el_chared.c_undo.len = -1;
641 *el->el_line.lastchar = '\0'; /* just in case */
642
643 if (el->el_history.eventno == 0) { /* save the current buffer
644 * away */
645 (void) strncpy(el->el_history.buf, el->el_line.buffer,
646 EL_BUFSIZ);
647 el->el_history.last = el->el_history.buf +
648 (el->el_line.lastchar - el->el_line.buffer);
649 }
650 el->el_history.eventno += el->el_state.argument;
651
652 if (hist_get(el) == CC_ERROR) {
653 if (el->el_map.type == MAP_VI) {
654 el->el_history.eventno = sv_event;
655 return CC_ERROR;
656 }
657 beep = 1;
658 /* el->el_history.eventno was fixed by first call */
659 (void) hist_get(el);
660 }
661 if (beep)
662 return CC_REFRESH_BEEP;
663 return CC_REFRESH;
664 }
665
666
667 /* ed_next_history():
668 * Move to the next history line
669 * [^N] [j]
670 */
671 protected el_action_t
672 /*ARGSUSED*/
ed_next_history(EditLine * el,int c __unused)673 ed_next_history(EditLine *el, int c __unused)
674 {
675 el_action_t beep = CC_REFRESH, rval;
676
677 el->el_chared.c_undo.len = -1;
678 *el->el_line.lastchar = '\0'; /* just in case */
679
680 el->el_history.eventno -= el->el_state.argument;
681
682 if (el->el_history.eventno < 0) {
683 el->el_history.eventno = 0;
684 beep = CC_REFRESH_BEEP;
685 }
686 rval = hist_get(el);
687 if (rval == CC_REFRESH)
688 return beep;
689 return rval;
690
691 }
692
693
694 /* ed_search_prev_history():
695 * Search previous in history for a line matching the current
696 * next search history [M-P] [K]
697 */
698 protected el_action_t
699 /*ARGSUSED*/
ed_search_prev_history(EditLine * el,int c __unused)700 ed_search_prev_history(EditLine *el, int c __unused)
701 {
702 const char *hp;
703 int h;
704 bool_t found = 0;
705
706 el->el_chared.c_vcmd.action = NOP;
707 el->el_chared.c_undo.len = -1;
708 *el->el_line.lastchar = '\0'; /* just in case */
709 if (el->el_history.eventno < 0) {
710 #ifdef DEBUG_EDIT
711 (void) fprintf(el->el_errfile,
712 "e_prev_search_hist(): eventno < 0;\n");
713 #endif
714 el->el_history.eventno = 0;
715 return (CC_ERROR);
716 }
717 if (el->el_history.eventno == 0) {
718 (void) strncpy(el->el_history.buf, el->el_line.buffer,
719 EL_BUFSIZ);
720 el->el_history.last = el->el_history.buf +
721 (el->el_line.lastchar - el->el_line.buffer);
722 }
723 if (el->el_history.ref == NULL)
724 return (CC_ERROR);
725
726 hp = HIST_FIRST(el);
727 if (hp == NULL)
728 return (CC_ERROR);
729
730 c_setpat(el); /* Set search pattern !! */
731
732 for (h = 1; h <= el->el_history.eventno; h++)
733 hp = HIST_NEXT(el);
734
735 while (hp != NULL) {
736 #ifdef SDEBUG
737 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
738 #endif
739 if ((strncmp(hp, el->el_line.buffer, (size_t)
740 (el->el_line.lastchar - el->el_line.buffer)) ||
741 hp[el->el_line.lastchar - el->el_line.buffer]) &&
742 c_hmatch(el, hp)) {
743 found++;
744 break;
745 }
746 h++;
747 hp = HIST_NEXT(el);
748 }
749
750 if (!found) {
751 #ifdef SDEBUG
752 (void) fprintf(el->el_errfile, "not found\n");
753 #endif
754 return (CC_ERROR);
755 }
756 el->el_history.eventno = h;
757
758 return (hist_get(el));
759 }
760
761
762 /* ed_search_next_history():
763 * Search next in history for a line matching the current
764 * [M-N] [J]
765 */
766 protected el_action_t
767 /*ARGSUSED*/
ed_search_next_history(EditLine * el,int c __unused)768 ed_search_next_history(EditLine *el, int c __unused)
769 {
770 const char *hp;
771 int h;
772 bool_t found = 0;
773
774 el->el_chared.c_vcmd.action = NOP;
775 el->el_chared.c_undo.len = -1;
776 *el->el_line.lastchar = '\0'; /* just in case */
777
778 if (el->el_history.eventno == 0)
779 return (CC_ERROR);
780
781 if (el->el_history.ref == NULL)
782 return (CC_ERROR);
783
784 hp = HIST_FIRST(el);
785 if (hp == NULL)
786 return (CC_ERROR);
787
788 c_setpat(el); /* Set search pattern !! */
789
790 for (h = 1; h < el->el_history.eventno && hp; h++) {
791 #ifdef SDEBUG
792 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
793 #endif
794 if ((strncmp(hp, el->el_line.buffer, (size_t)
795 (el->el_line.lastchar - el->el_line.buffer)) ||
796 hp[el->el_line.lastchar - el->el_line.buffer]) &&
797 c_hmatch(el, hp))
798 found = h;
799 hp = HIST_NEXT(el);
800 }
801
802 if (!found) { /* is it the current history number? */
803 if (!c_hmatch(el, el->el_history.buf)) {
804 #ifdef SDEBUG
805 (void) fprintf(el->el_errfile, "not found\n");
806 #endif
807 return (CC_ERROR);
808 }
809 }
810 el->el_history.eventno = found;
811
812 return (hist_get(el));
813 }
814
815
816 /* ed_prev_line():
817 * Move up one line
818 * Could be [k] [^p]
819 */
820 protected el_action_t
821 /*ARGSUSED*/
ed_prev_line(EditLine * el,int c __unused)822 ed_prev_line(EditLine *el, int c __unused)
823 {
824 char *ptr;
825 int nchars = c_hpos(el);
826
827 /*
828 * Move to the line requested
829 */
830 if (*(ptr = el->el_line.cursor) == '\n')
831 ptr--;
832
833 for (; ptr >= el->el_line.buffer; ptr--)
834 if (*ptr == '\n' && --el->el_state.argument <= 0)
835 break;
836
837 if (el->el_state.argument > 0)
838 return (CC_ERROR);
839
840 /*
841 * Move to the beginning of the line
842 */
843 for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
844 continue;
845
846 /*
847 * Move to the character requested
848 */
849 for (ptr++;
850 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
851 ptr++)
852 continue;
853
854 el->el_line.cursor = ptr;
855 return (CC_CURSOR);
856 }
857
858
859 /* ed_next_line():
860 * Move down one line
861 * Could be [j] [^n]
862 */
863 protected el_action_t
864 /*ARGSUSED*/
ed_next_line(EditLine * el,int c __unused)865 ed_next_line(EditLine *el, int c __unused)
866 {
867 char *ptr;
868 int nchars = c_hpos(el);
869
870 /*
871 * Move to the line requested
872 */
873 for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
874 if (*ptr == '\n' && --el->el_state.argument <= 0)
875 break;
876
877 if (el->el_state.argument > 0)
878 return (CC_ERROR);
879
880 /*
881 * Move to the character requested
882 */
883 for (ptr++;
884 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
885 ptr++)
886 continue;
887
888 el->el_line.cursor = ptr;
889 return (CC_CURSOR);
890 }
891
892
893 /* ed_command():
894 * Editline extended command
895 * [M-X] [:]
896 */
897 protected el_action_t
898 /*ARGSUSED*/
ed_command(EditLine * el,int c __unused)899 ed_command(EditLine *el, int c __unused)
900 {
901 char tmpbuf[EL_BUFSIZ];
902 int tmplen;
903
904 tmplen = c_gets(el, tmpbuf, "\n: ");
905 term__putc(el, '\n');
906
907 if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
908 term_beep(el);
909
910 el->el_map.current = el->el_map.key;
911 re_clear_display(el);
912 return CC_REFRESH;
913 }
914