1 /* $NetBSD: common.c,v 1.29 2012/03/24 20:08:43 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 1.29 2012/03/24 20:08:43 christos Exp $");
41 #endif
42 #endif /* not lint && not SCCSID */
43 #include <sys/cdefs.h>
44 __FBSDID("$FreeBSD$");
45
46 /*
47 * common.c: Common Editor functions
48 */
49 #include "el.h"
50
51 /* ed_end_of_file():
52 * Indicate end of file
53 * [^D]
54 */
55 protected el_action_t
56 /*ARGSUSED*/
ed_end_of_file(EditLine * el,Int c)57 ed_end_of_file(EditLine *el, Int c __attribute__((__unused__)))
58 {
59
60 re_goto_bottom(el);
61 *el->el_line.lastchar = '\0';
62 return CC_EOF;
63 }
64
65
66 /* ed_insert():
67 * Add character to the line
68 * Insert a character [bound to all insert keys]
69 */
70 protected el_action_t
ed_insert(EditLine * el,Int c)71 ed_insert(EditLine *el, Int c)
72 {
73 int count = el->el_state.argument;
74
75 if (c == '\0')
76 return CC_ERROR;
77
78 if (el->el_line.lastchar + el->el_state.argument >=
79 el->el_line.limit) {
80 /* end of buffer space, try to allocate more */
81 if (!ch_enlargebufs(el, (size_t) count))
82 return CC_ERROR; /* error allocating more */
83 }
84
85 if (count == 1) {
86 if (el->el_state.inputmode == MODE_INSERT
87 || el->el_line.cursor >= el->el_line.lastchar)
88 c_insert(el, 1);
89
90 *el->el_line.cursor++ = c;
91 re_fastaddc(el); /* fast refresh for one char. */
92 } else {
93 if (el->el_state.inputmode != MODE_REPLACE_1)
94 c_insert(el, el->el_state.argument);
95
96 while (count-- && el->el_line.cursor < el->el_line.lastchar)
97 *el->el_line.cursor++ = c;
98 re_refresh(el);
99 }
100
101 if (el->el_state.inputmode == MODE_REPLACE_1)
102 return vi_command_mode(el, 0);
103
104 return CC_NORM;
105 }
106
107
108 /* ed_delete_prev_word():
109 * Delete from beginning of current word to cursor
110 * [M-^?] [^W]
111 */
112 protected el_action_t
113 /*ARGSUSED*/
ed_delete_prev_word(EditLine * el,Int c)114 ed_delete_prev_word(EditLine *el, Int c __attribute__((__unused__)))
115 {
116 Char *cp, *p, *kp;
117
118 if (el->el_line.cursor == el->el_line.buffer)
119 return CC_ERROR;
120
121 cp = c__prev_word(el->el_line.cursor, el->el_line.buffer,
122 el->el_state.argument, ce__isword);
123
124 for (p = cp, kp = el->el_chared.c_kill.buf; p < el->el_line.cursor; p++)
125 *kp++ = *p;
126 el->el_chared.c_kill.last = kp;
127
128 c_delbefore(el, (int)(el->el_line.cursor - cp));/* delete before dot */
129 el->el_line.cursor = cp;
130 if (el->el_line.cursor < el->el_line.buffer)
131 el->el_line.cursor = el->el_line.buffer; /* bounds check */
132 return CC_REFRESH;
133 }
134
135
136 /* ed_delete_next_char():
137 * Delete character under cursor
138 * [^D] [x]
139 */
140 protected el_action_t
141 /*ARGSUSED*/
ed_delete_next_char(EditLine * el,Int c)142 ed_delete_next_char(EditLine *el, Int c __attribute__((__unused__)))
143 {
144 #ifdef DEBUG_EDIT
145 #define EL el->el_line
146 (void) fprintf(el->el_errlfile,
147 "\nD(b: %x(%s) c: %x(%s) last: %x(%s) limit: %x(%s)\n",
148 EL.buffer, EL.buffer, EL.cursor, EL.cursor, EL.lastchar,
149 EL.lastchar, EL.limit, EL.limit);
150 #endif
151 if (el->el_line.cursor == el->el_line.lastchar) {
152 /* if I'm at the end */
153 if (el->el_map.type == MAP_VI) {
154 if (el->el_line.cursor == el->el_line.buffer) {
155 /* if I'm also at the beginning */
156 #ifdef KSHVI
157 return CC_ERROR;
158 #else
159 /* then do an EOF */
160 terminal_writec(el, c);
161 return CC_EOF;
162 #endif
163 } else {
164 #ifdef KSHVI
165 el->el_line.cursor--;
166 #else
167 return CC_ERROR;
168 #endif
169 }
170 } else
171 return CC_ERROR;
172 }
173 c_delafter(el, el->el_state.argument); /* delete after dot */
174 if (el->el_map.type == MAP_VI &&
175 el->el_line.cursor >= el->el_line.lastchar &&
176 el->el_line.cursor > el->el_line.buffer)
177 /* bounds check */
178 el->el_line.cursor = el->el_line.lastchar - 1;
179 return CC_REFRESH;
180 }
181
182
183 /* ed_kill_line():
184 * Cut to the end of line
185 * [^K] [^K]
186 */
187 protected el_action_t
188 /*ARGSUSED*/
ed_kill_line(EditLine * el,Int c)189 ed_kill_line(EditLine *el, Int c __attribute__((__unused__)))
190 {
191 Char *kp, *cp;
192
193 cp = el->el_line.cursor;
194 kp = el->el_chared.c_kill.buf;
195 while (cp < el->el_line.lastchar)
196 *kp++ = *cp++; /* copy it */
197 el->el_chared.c_kill.last = kp;
198 /* zap! -- delete to end */
199 el->el_line.lastchar = el->el_line.cursor;
200 return CC_REFRESH;
201 }
202
203
204 /* ed_move_to_end():
205 * Move cursor to the end of line
206 * [^E] [^E]
207 */
208 protected el_action_t
209 /*ARGSUSED*/
ed_move_to_end(EditLine * el,Int c)210 ed_move_to_end(EditLine *el, Int c __attribute__((__unused__)))
211 {
212
213 el->el_line.cursor = el->el_line.lastchar;
214 if (el->el_map.type == MAP_VI) {
215 if (el->el_chared.c_vcmd.action != NOP) {
216 cv_delfini(el);
217 return CC_REFRESH;
218 }
219 #ifdef VI_MOVE
220 el->el_line.cursor--;
221 #endif
222 }
223 return CC_CURSOR;
224 }
225
226
227 /* ed_move_to_beg():
228 * Move cursor to the beginning of line
229 * [^A] [^A]
230 */
231 protected el_action_t
232 /*ARGSUSED*/
ed_move_to_beg(EditLine * el,Int c)233 ed_move_to_beg(EditLine *el, Int c __attribute__((__unused__)))
234 {
235
236 el->el_line.cursor = el->el_line.buffer;
237
238 if (el->el_map.type == MAP_VI) {
239 /* We want FIRST non space character */
240 while (Isspace(*el->el_line.cursor))
241 el->el_line.cursor++;
242 if (el->el_chared.c_vcmd.action != NOP) {
243 cv_delfini(el);
244 return CC_REFRESH;
245 }
246 }
247 return CC_CURSOR;
248 }
249
250
251 /* ed_transpose_chars():
252 * Exchange the character to the left of the cursor with the one under it
253 * [^T] [^T]
254 */
255 protected el_action_t
ed_transpose_chars(EditLine * el,Int c)256 ed_transpose_chars(EditLine *el, Int c)
257 {
258
259 if (el->el_line.cursor < el->el_line.lastchar) {
260 if (el->el_line.lastchar <= &el->el_line.buffer[1])
261 return CC_ERROR;
262 else
263 el->el_line.cursor++;
264 }
265 if (el->el_line.cursor > &el->el_line.buffer[1]) {
266 /* must have at least two chars entered */
267 c = el->el_line.cursor[-2];
268 el->el_line.cursor[-2] = el->el_line.cursor[-1];
269 el->el_line.cursor[-1] = c;
270 return CC_REFRESH;
271 } else
272 return CC_ERROR;
273 }
274
275
276 /* ed_next_char():
277 * Move to the right one character
278 * [^F] [^F]
279 */
280 protected el_action_t
281 /*ARGSUSED*/
ed_next_char(EditLine * el,Int c)282 ed_next_char(EditLine *el, Int c __attribute__((__unused__)))
283 {
284 Char *lim = el->el_line.lastchar;
285
286 if (el->el_line.cursor >= lim ||
287 (el->el_line.cursor == lim - 1 &&
288 el->el_map.type == MAP_VI &&
289 el->el_chared.c_vcmd.action == NOP))
290 return CC_ERROR;
291
292 el->el_line.cursor += el->el_state.argument;
293 if (el->el_line.cursor > lim)
294 el->el_line.cursor = lim;
295
296 if (el->el_map.type == MAP_VI)
297 if (el->el_chared.c_vcmd.action != NOP) {
298 cv_delfini(el);
299 return CC_REFRESH;
300 }
301 return CC_CURSOR;
302 }
303
304
305 /* ed_prev_word():
306 * Move to the beginning of the current word
307 * [M-b] [b]
308 */
309 protected el_action_t
310 /*ARGSUSED*/
ed_prev_word(EditLine * el,Int c)311 ed_prev_word(EditLine *el, Int c __attribute__((__unused__)))
312 {
313
314 if (el->el_line.cursor == el->el_line.buffer)
315 return CC_ERROR;
316
317 el->el_line.cursor = c__prev_word(el->el_line.cursor,
318 el->el_line.buffer,
319 el->el_state.argument,
320 ce__isword);
321
322 if (el->el_map.type == MAP_VI)
323 if (el->el_chared.c_vcmd.action != NOP) {
324 cv_delfini(el);
325 return CC_REFRESH;
326 }
327 return CC_CURSOR;
328 }
329
330
331 /* ed_prev_char():
332 * Move to the left one character
333 * [^B] [^B]
334 */
335 protected el_action_t
336 /*ARGSUSED*/
ed_prev_char(EditLine * el,Int c)337 ed_prev_char(EditLine *el, Int c __attribute__((__unused__)))
338 {
339
340 if (el->el_line.cursor > el->el_line.buffer) {
341 el->el_line.cursor -= el->el_state.argument;
342 if (el->el_line.cursor < el->el_line.buffer)
343 el->el_line.cursor = el->el_line.buffer;
344
345 if (el->el_map.type == MAP_VI)
346 if (el->el_chared.c_vcmd.action != NOP) {
347 cv_delfini(el);
348 return CC_REFRESH;
349 }
350 return CC_CURSOR;
351 } else
352 return CC_ERROR;
353 }
354
355
356 /* ed_quoted_insert():
357 * Add the next character typed verbatim
358 * [^V] [^V]
359 */
360 protected el_action_t
ed_quoted_insert(EditLine * el,Int c)361 ed_quoted_insert(EditLine *el, Int c)
362 {
363 int num;
364 Char tc;
365
366 tty_quotemode(el);
367 num = FUN(el,getc)(el, &tc);
368 c = tc;
369 tty_noquotemode(el);
370 if (num == 1)
371 return ed_insert(el, c);
372 else
373 return ed_end_of_file(el, 0);
374 }
375
376
377 /* ed_digit():
378 * Adds to argument or enters a digit
379 */
380 protected el_action_t
ed_digit(EditLine * el,Int c)381 ed_digit(EditLine *el, Int c)
382 {
383
384 if (!Isdigit(c))
385 return CC_ERROR;
386
387 if (el->el_state.doingarg) {
388 /* if doing an arg, add this in... */
389 if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
390 el->el_state.argument = c - '0';
391 else {
392 if (el->el_state.argument > 1000000)
393 return CC_ERROR;
394 el->el_state.argument =
395 (el->el_state.argument * 10) + (c - '0');
396 }
397 return CC_ARGHACK;
398 }
399
400 return ed_insert(el, c);
401 }
402
403
404 /* ed_argument_digit():
405 * Digit that starts argument
406 * For ESC-n
407 */
408 protected el_action_t
ed_argument_digit(EditLine * el,Int c)409 ed_argument_digit(EditLine *el, Int c)
410 {
411
412 if (!Isdigit(c))
413 return CC_ERROR;
414
415 if (el->el_state.doingarg) {
416 if (el->el_state.argument > 1000000)
417 return CC_ERROR;
418 el->el_state.argument = (el->el_state.argument * 10) +
419 (c - '0');
420 } else { /* else starting an argument */
421 el->el_state.argument = c - '0';
422 el->el_state.doingarg = 1;
423 }
424 return CC_ARGHACK;
425 }
426
427
428 /* ed_unassigned():
429 * Indicates unbound character
430 * Bound to keys that are not assigned
431 */
432 protected el_action_t
433 /*ARGSUSED*/
ed_unassigned(EditLine * el,Int c)434 ed_unassigned(EditLine *el __attribute__((__unused__)),
435 Int c __attribute__((__unused__)))
436 {
437
438 return CC_ERROR;
439 }
440
441
442 /**
443 ** TTY key handling.
444 **/
445
446 /* ed_tty_sigint():
447 * Tty interrupt character
448 * [^C]
449 */
450 protected el_action_t
451 /*ARGSUSED*/
ed_tty_sigint(EditLine * el,Int c)452 ed_tty_sigint(EditLine *el __attribute__((__unused__)),
453 Int c __attribute__((__unused__)))
454 {
455
456 return CC_NORM;
457 }
458
459
460 /* ed_tty_dsusp():
461 * Tty delayed suspend character
462 * [^Y]
463 */
464 protected el_action_t
465 /*ARGSUSED*/
ed_tty_dsusp(EditLine * el,Int c)466 ed_tty_dsusp(EditLine *el __attribute__((__unused__)),
467 Int c __attribute__((__unused__)))
468 {
469
470 return CC_NORM;
471 }
472
473
474 /* ed_tty_flush_output():
475 * Tty flush output characters
476 * [^O]
477 */
478 protected el_action_t
479 /*ARGSUSED*/
ed_tty_flush_output(EditLine * el,Int c)480 ed_tty_flush_output(EditLine *el __attribute__((__unused__)),
481 Int c __attribute__((__unused__)))
482 {
483
484 return CC_NORM;
485 }
486
487
488 /* ed_tty_sigquit():
489 * Tty quit character
490 * [^\]
491 */
492 protected el_action_t
493 /*ARGSUSED*/
ed_tty_sigquit(EditLine * el,Int c)494 ed_tty_sigquit(EditLine *el __attribute__((__unused__)),
495 Int c __attribute__((__unused__)))
496 {
497
498 return CC_NORM;
499 }
500
501
502 /* ed_tty_sigtstp():
503 * Tty suspend character
504 * [^Z]
505 */
506 protected el_action_t
507 /*ARGSUSED*/
ed_tty_sigtstp(EditLine * el,Int c)508 ed_tty_sigtstp(EditLine *el __attribute__((__unused__)),
509 Int c __attribute__((__unused__)))
510 {
511
512 return CC_NORM;
513 }
514
515
516 /* ed_tty_stop_output():
517 * Tty disallow output characters
518 * [^S]
519 */
520 protected el_action_t
521 /*ARGSUSED*/
ed_tty_stop_output(EditLine * el,Int c)522 ed_tty_stop_output(EditLine *el __attribute__((__unused__)),
523 Int c __attribute__((__unused__)))
524 {
525
526 return CC_NORM;
527 }
528
529
530 /* ed_tty_start_output():
531 * Tty allow output characters
532 * [^Q]
533 */
534 protected el_action_t
535 /*ARGSUSED*/
ed_tty_start_output(EditLine * el,Int c)536 ed_tty_start_output(EditLine *el __attribute__((__unused__)),
537 Int c __attribute__((__unused__)))
538 {
539
540 return CC_NORM;
541 }
542
543
544 /* ed_newline():
545 * Execute command
546 * [^J]
547 */
548 protected el_action_t
549 /*ARGSUSED*/
ed_newline(EditLine * el,Int c)550 ed_newline(EditLine *el, Int c __attribute__((__unused__)))
551 {
552
553 re_goto_bottom(el);
554 *el->el_line.lastchar++ = '\n';
555 *el->el_line.lastchar = '\0';
556 return CC_NEWLINE;
557 }
558
559
560 /* ed_delete_prev_char():
561 * Delete the character to the left of the cursor
562 * [^?]
563 */
564 protected el_action_t
565 /*ARGSUSED*/
ed_delete_prev_char(EditLine * el,Int c)566 ed_delete_prev_char(EditLine *el, Int c __attribute__((__unused__)))
567 {
568
569 if (el->el_line.cursor <= el->el_line.buffer)
570 return CC_ERROR;
571
572 c_delbefore(el, el->el_state.argument);
573 el->el_line.cursor -= el->el_state.argument;
574 if (el->el_line.cursor < el->el_line.buffer)
575 el->el_line.cursor = el->el_line.buffer;
576 return CC_REFRESH;
577 }
578
579
580 /* ed_clear_screen():
581 * Clear screen leaving current line at the top
582 * [^L]
583 */
584 protected el_action_t
585 /*ARGSUSED*/
ed_clear_screen(EditLine * el,Int c)586 ed_clear_screen(EditLine *el, Int c __attribute__((__unused__)))
587 {
588
589 terminal_clear_screen(el); /* clear the whole real screen */
590 re_clear_display(el); /* reset everything */
591 return CC_REFRESH;
592 }
593
594
595 /* ed_redisplay():
596 * Redisplay everything
597 * ^R
598 */
599 protected el_action_t
600 /*ARGSUSED*/
ed_redisplay(EditLine * el,Int c)601 ed_redisplay(EditLine *el __attribute__((__unused__)),
602 Int c __attribute__((__unused__)))
603 {
604
605 return CC_REDISPLAY;
606 }
607
608
609 /* ed_start_over():
610 * Erase current line and start from scratch
611 * [^G]
612 */
613 protected el_action_t
614 /*ARGSUSED*/
ed_start_over(EditLine * el,Int c)615 ed_start_over(EditLine *el, Int c __attribute__((__unused__)))
616 {
617
618 ch_reset(el, 0);
619 return CC_REFRESH;
620 }
621
622
623 /* ed_sequence_lead_in():
624 * First character in a bound sequence
625 * Placeholder for external keys
626 */
627 protected el_action_t
628 /*ARGSUSED*/
ed_sequence_lead_in(EditLine * el,Int c)629 ed_sequence_lead_in(EditLine *el __attribute__((__unused__)),
630 Int c __attribute__((__unused__)))
631 {
632
633 return CC_NORM;
634 }
635
636
637 /* ed_prev_history():
638 * Move to the previous history line
639 * [^P] [k]
640 */
641 protected el_action_t
642 /*ARGSUSED*/
ed_prev_history(EditLine * el,Int c)643 ed_prev_history(EditLine *el, Int c __attribute__((__unused__)))
644 {
645 char beep = 0;
646 int sv_event = el->el_history.eventno;
647
648 el->el_chared.c_undo.len = -1;
649 *el->el_line.lastchar = '\0'; /* just in case */
650
651 if (el->el_history.eventno == 0) { /* save the current buffer
652 * away */
653 (void) Strncpy(el->el_history.buf, el->el_line.buffer,
654 EL_BUFSIZ);
655 el->el_history.last = el->el_history.buf +
656 (el->el_line.lastchar - el->el_line.buffer);
657 }
658 el->el_history.eventno += el->el_state.argument;
659
660 if (hist_get(el) == CC_ERROR) {
661 if (el->el_map.type == MAP_VI) {
662 el->el_history.eventno = sv_event;
663
664 }
665 beep = 1;
666 /* el->el_history.eventno was fixed by first call */
667 (void) hist_get(el);
668 }
669 if (beep)
670 return CC_REFRESH_BEEP;
671 return CC_REFRESH;
672 }
673
674
675 /* ed_next_history():
676 * Move to the next history line
677 * [^N] [j]
678 */
679 protected el_action_t
680 /*ARGSUSED*/
ed_next_history(EditLine * el,Int c)681 ed_next_history(EditLine *el, Int c __attribute__((__unused__)))
682 {
683 el_action_t beep = CC_REFRESH, rval;
684
685 el->el_chared.c_undo.len = -1;
686 *el->el_line.lastchar = '\0'; /* just in case */
687
688 el->el_history.eventno -= el->el_state.argument;
689
690 if (el->el_history.eventno < 0) {
691 el->el_history.eventno = 0;
692 beep = CC_REFRESH_BEEP;
693 }
694 rval = hist_get(el);
695 if (rval == CC_REFRESH)
696 return beep;
697 return rval;
698
699 }
700
701
702 /* ed_search_prev_history():
703 * Search previous in history for a line matching the current
704 * next search history [M-P] [K]
705 */
706 protected el_action_t
707 /*ARGSUSED*/
ed_search_prev_history(EditLine * el,Int c)708 ed_search_prev_history(EditLine *el, Int c __attribute__((__unused__)))
709 {
710 const Char *hp;
711 int h;
712 bool_t found = 0;
713
714 el->el_chared.c_vcmd.action = NOP;
715 el->el_chared.c_undo.len = -1;
716 *el->el_line.lastchar = '\0'; /* just in case */
717 if (el->el_history.eventno < 0) {
718 #ifdef DEBUG_EDIT
719 (void) fprintf(el->el_errfile,
720 "e_prev_search_hist(): eventno < 0;\n");
721 #endif
722 el->el_history.eventno = 0;
723 return CC_ERROR;
724 }
725 if (el->el_history.eventno == 0) {
726 (void) Strncpy(el->el_history.buf, el->el_line.buffer,
727 EL_BUFSIZ);
728 el->el_history.last = el->el_history.buf +
729 (el->el_line.lastchar - el->el_line.buffer);
730 }
731 if (el->el_history.ref == NULL)
732 return CC_ERROR;
733
734 hp = HIST_FIRST(el);
735 if (hp == NULL)
736 return CC_ERROR;
737
738 c_setpat(el); /* Set search pattern !! */
739
740 for (h = 1; h <= el->el_history.eventno; h++)
741 hp = HIST_NEXT(el);
742
743 while (hp != NULL) {
744 #ifdef SDEBUG
745 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
746 #endif
747 if ((Strncmp(hp, el->el_line.buffer, (size_t)
748 (el->el_line.lastchar - el->el_line.buffer)) ||
749 hp[el->el_line.lastchar - el->el_line.buffer]) &&
750 c_hmatch(el, hp)) {
751 found++;
752 break;
753 }
754 h++;
755 hp = HIST_NEXT(el);
756 }
757
758 if (!found) {
759 #ifdef SDEBUG
760 (void) fprintf(el->el_errfile, "not found\n");
761 #endif
762 return CC_ERROR;
763 }
764 el->el_history.eventno = h;
765
766 return hist_get(el);
767 }
768
769
770 /* ed_search_next_history():
771 * Search next in history for a line matching the current
772 * [M-N] [J]
773 */
774 protected el_action_t
775 /*ARGSUSED*/
ed_search_next_history(EditLine * el,Int c)776 ed_search_next_history(EditLine *el, Int c __attribute__((__unused__)))
777 {
778 const Char *hp;
779 int h;
780 bool_t found = 0;
781
782 el->el_chared.c_vcmd.action = NOP;
783 el->el_chared.c_undo.len = -1;
784 *el->el_line.lastchar = '\0'; /* just in case */
785
786 if (el->el_history.eventno == 0)
787 return CC_ERROR;
788
789 if (el->el_history.ref == NULL)
790 return CC_ERROR;
791
792 hp = HIST_FIRST(el);
793 if (hp == NULL)
794 return CC_ERROR;
795
796 c_setpat(el); /* Set search pattern !! */
797
798 for (h = 1; h < el->el_history.eventno && hp; h++) {
799 #ifdef SDEBUG
800 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
801 #endif
802 if ((Strncmp(hp, el->el_line.buffer, (size_t)
803 (el->el_line.lastchar - el->el_line.buffer)) ||
804 hp[el->el_line.lastchar - el->el_line.buffer]) &&
805 c_hmatch(el, hp))
806 found = h;
807 hp = HIST_NEXT(el);
808 }
809
810 if (!found) { /* is it the current history number? */
811 if (!c_hmatch(el, el->el_history.buf)) {
812 #ifdef SDEBUG
813 (void) fprintf(el->el_errfile, "not found\n");
814 #endif
815 return CC_ERROR;
816 }
817 }
818 el->el_history.eventno = found;
819
820 return hist_get(el);
821 }
822
823
824 /* ed_prev_line():
825 * Move up one line
826 * Could be [k] [^p]
827 */
828 protected el_action_t
829 /*ARGSUSED*/
ed_prev_line(EditLine * el,Int c)830 ed_prev_line(EditLine *el, Int c __attribute__((__unused__)))
831 {
832 Char *ptr;
833 int nchars = c_hpos(el);
834
835 /*
836 * Move to the line requested
837 */
838 if (*(ptr = el->el_line.cursor) == '\n')
839 ptr--;
840
841 for (; ptr >= el->el_line.buffer; ptr--)
842 if (*ptr == '\n' && --el->el_state.argument <= 0)
843 break;
844
845 if (el->el_state.argument > 0)
846 return CC_ERROR;
847
848 /*
849 * Move to the beginning of the line
850 */
851 for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
852 continue;
853
854 /*
855 * Move to the character requested
856 */
857 for (ptr++;
858 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
859 ptr++)
860 continue;
861
862 el->el_line.cursor = ptr;
863 return CC_CURSOR;
864 }
865
866
867 /* ed_next_line():
868 * Move down one line
869 * Could be [j] [^n]
870 */
871 protected el_action_t
872 /*ARGSUSED*/
ed_next_line(EditLine * el,Int c)873 ed_next_line(EditLine *el, Int c __attribute__((__unused__)))
874 {
875 Char *ptr;
876 int nchars = c_hpos(el);
877
878 /*
879 * Move to the line requested
880 */
881 for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
882 if (*ptr == '\n' && --el->el_state.argument <= 0)
883 break;
884
885 if (el->el_state.argument > 0)
886 return CC_ERROR;
887
888 /*
889 * Move to the character requested
890 */
891 for (ptr++;
892 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
893 ptr++)
894 continue;
895
896 el->el_line.cursor = ptr;
897 return CC_CURSOR;
898 }
899
900
901 /* ed_command():
902 * Editline extended command
903 * [M-X] [:]
904 */
905 protected el_action_t
906 /*ARGSUSED*/
ed_command(EditLine * el,Int c)907 ed_command(EditLine *el, Int c __attribute__((__unused__)))
908 {
909 Char tmpbuf[EL_BUFSIZ];
910 int tmplen;
911
912 tmplen = c_gets(el, tmpbuf, STR("\n: "));
913 terminal__putc(el, '\n');
914
915 if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
916 terminal_beep(el);
917
918 el->el_map.current = el->el_map.key;
919 re_clear_display(el);
920 return CC_REFRESH;
921 }
922