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 1.18 2005/08/08 14:05:37 christos Exp $
33 */
34
35#if !defined(lint) && !defined(SCCSID)
36static char sccsid[] = "@(#)common.c 8.1 (Berkeley) 6/4/93";
37#endif /* not lint && not SCCSID */
38#include <sys/cdefs.h>
39__FBSDID("$FreeBSD: head/lib/libedit/common.c 148900 2005-08-09 13:37:59Z stefanf $");
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 */
51protected el_action_t
52/*ARGSUSED*/
53ed_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 */
66protected el_action_t
67ed_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 */
108protected el_action_t
109/*ARGSUSED*/
110ed_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, 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 */
136protected el_action_t
137/*ARGSUSED*/
138ed_delete_next_char(EditLine *el, int c __unused)
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 term_overwrite(el, STReof, 4);
156 /* then do an EOF */
157 term__flush();
158 return (CC_EOF);
159#endif
160 } else {
161#ifdef KSHVI
162 el->el_line.cursor--;
163#else
164 return (CC_ERROR);
165#endif
166 }
167 } else {
168 if (el->el_line.cursor != el->el_line.buffer)
169 el->el_line.cursor--;
170 else
171 return (CC_ERROR);
172 }
173 }
174 c_delafter(el, el->el_state.argument); /* delete after dot */
175 if (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 */
187protected el_action_t
188/*ARGSUSED*/
189ed_kill_line(EditLine *el, int c __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 */
208protected el_action_t
209/*ARGSUSED*/
210ed_move_to_end(EditLine *el, int c __unused)
211{
212
213 el->el_line.cursor = el->el_line.lastchar;
214 if (el->el_map.type == MAP_VI) {
215#ifdef VI_MOVE
216 el->el_line.cursor--;
217#endif
218 if (el->el_chared.c_vcmd.action != NOP) {
219 cv_delfini(el);
220 return (CC_REFRESH);
221 }
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 */
231protected el_action_t
232/*ARGSUSED*/
233ed_move_to_beg(EditLine *el, int c __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((unsigned char) *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 */
255protected el_action_t
256ed_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 */
280protected el_action_t
281/*ARGSUSED*/
282ed_next_char(EditLine *el, int c __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 */
309protected el_action_t
310/*ARGSUSED*/
311ed_prev_word(EditLine *el, int c __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 */
335protected el_action_t
336/*ARGSUSED*/
337ed_prev_char(EditLine *el, int c __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 */
360protected el_action_t
361ed_quoted_insert(EditLine *el, int c)
362{
363 int num;
364 char tc;
365
366 tty_quotemode(el);
367 num = el_getc(el, &tc);
368 c = (unsigned char) 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 */
380protected el_action_t
381ed_digit(EditLine *el, int c)
382{
383
384 if (!isdigit((unsigned char) 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 */
408protected el_action_t
409ed_argument_digit(EditLine *el, int c)
410{
411
412 if (!isdigit((unsigned char) 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 */
432protected el_action_t
433/*ARGSUSED*/
434ed_unassigned(EditLine *el, int c __unused)
435{
436
437 return (CC_ERROR);
438}
439
440
441/**
442 ** TTY key handling.
443 **/
444
445/* ed_tty_sigint():
446 * Tty interrupt character
447 * [^C]
448 */
449protected el_action_t
450/*ARGSUSED*/
451ed_tty_sigint(EditLine *el __unused,
452 int c __unused)
453{
454
455 return (CC_NORM);
456}
457
458
459/* ed_tty_dsusp():
460 * Tty delayed suspend character
461 * [^Y]
462 */
463protected el_action_t
464/*ARGSUSED*/
465ed_tty_dsusp(EditLine *el __unused,
466 int c __unused)
467{
468
469 return (CC_NORM);
470}
471
472
473/* ed_tty_flush_output():
474 * Tty flush output characters
475 * [^O]
476 */
477protected el_action_t
478/*ARGSUSED*/
479ed_tty_flush_output(EditLine *el __unused,
480 int c __unused)
481{
482
483 return (CC_NORM);
484}
485
486
487/* ed_tty_sigquit():
488 * Tty quit character
489 * [^\]
490 */
491protected el_action_t
492/*ARGSUSED*/
493ed_tty_sigquit(EditLine *el __unused,
494 int c __unused)
495{
496
497 return (CC_NORM);
498}
499
500
501/* ed_tty_sigtstp():
502 * Tty suspend character
503 * [^Z]
504 */
505protected el_action_t
506/*ARGSUSED*/
507ed_tty_sigtstp(EditLine *el __unused,
508 int c __unused)
509{
510
511 return (CC_NORM);
512}
513
514
515/* ed_tty_stop_output():
516 * Tty disallow output characters
517 * [^S]
518 */
519protected el_action_t
520/*ARGSUSED*/
521ed_tty_stop_output(EditLine *el __unused,
522 int c __unused)
523{
524
525 return (CC_NORM);
526}
527
528
529/* ed_tty_start_output():
530 * Tty allow output characters
531 * [^Q]
532 */
533protected el_action_t
534/*ARGSUSED*/
535ed_tty_start_output(EditLine *el __unused,
536 int c __unused)
537{
538
539 return (CC_NORM);
540}
541
542
543/* ed_newline():
544 * Execute command
545 * [^J]
546 */
547protected el_action_t
548/*ARGSUSED*/
549ed_newline(EditLine *el, int c __unused)
550{
551
552 re_goto_bottom(el);
553 *el->el_line.lastchar++ = '\n';
554 *el->el_line.lastchar = '\0';
555 return (CC_NEWLINE);
556}
557
558
559/* ed_delete_prev_char():
560 * Delete the character to the left of the cursor
561 * [^?]
562 */
563protected el_action_t
564/*ARGSUSED*/
565ed_delete_prev_char(EditLine *el, int c __unused)
566{
567
568 if (el->el_line.cursor <= el->el_line.buffer)
569 return (CC_ERROR);
570
571 c_delbefore(el, el->el_state.argument);
572 el->el_line.cursor -= el->el_state.argument;
573 if (el->el_line.cursor < el->el_line.buffer)
574 el->el_line.cursor = el->el_line.buffer;
575 return (CC_REFRESH);
576}
577
578
579/* ed_clear_screen():
580 * Clear screen leaving current line at the top
581 * [^L]
582 */
583protected el_action_t
584/*ARGSUSED*/
585ed_clear_screen(EditLine *el, int c __unused)
586{
587
588 term_clear_screen(el); /* clear the whole real screen */
589 re_clear_display(el); /* reset everything */
590 return (CC_REFRESH);
591}
592
593
594/* ed_redisplay():
595 * Redisplay everything
596 * ^R
597 */
598protected el_action_t
599/*ARGSUSED*/
600ed_redisplay(EditLine *el __unused,
601 int c __unused)
602{
603
604 return (CC_REDISPLAY);
605}
606
607
608/* ed_start_over():
609 * Erase current line and start from scratch
610 * [^G]
611 */
612protected el_action_t
613/*ARGSUSED*/
614ed_start_over(EditLine *el, int c __unused)
615{
616
617 ch_reset(el, 0);
618 return (CC_REFRESH);
619}
620
621
622/* ed_sequence_lead_in():
623 * First character in a bound sequence
624 * Placeholder for external keys
625 */
626protected el_action_t
627/*ARGSUSED*/
628ed_sequence_lead_in(EditLine *el __unused,
629 int c __unused)
630{
631
632 return (CC_NORM);
633}
634
635
636/* ed_prev_history():
637 * Move to the previous history line
638 * [^P] [k]
639 */
640protected el_action_t
641/*ARGSUSED*/
642ed_prev_history(EditLine *el, int c __unused)
643{
644 char beep = 0;
645 int sv_event = el->el_history.eventno;
646
647 el->el_chared.c_undo.len = -1;
648 *el->el_line.lastchar = '\0'; /* just in case */
649
650 if (el->el_history.eventno == 0) { /* save the current buffer
651 * away */
652 (void) strncpy(el->el_history.buf, el->el_line.buffer,
653 EL_BUFSIZ);
654 el->el_history.last = el->el_history.buf +
655 (el->el_line.lastchar - el->el_line.buffer);
656 }
657 el->el_history.eventno += el->el_state.argument;
658
659 if (hist_get(el) == CC_ERROR) {
660 if (el->el_map.type == MAP_VI) {
661 el->el_history.eventno = sv_event;
662 return CC_ERROR;
663 }
664 beep = 1;
665 /* el->el_history.eventno was fixed by first call */
666 (void) hist_get(el);
667 }
668 if (beep)
669 return CC_REFRESH_BEEP;
670 return CC_REFRESH;
671}
672
673
674/* ed_next_history():
675 * Move to the next history line
676 * [^N] [j]
677 */
678protected el_action_t
679/*ARGSUSED*/
680ed_next_history(EditLine *el, int c __unused)
681{
682 el_action_t beep = CC_REFRESH, rval;
683
684 el->el_chared.c_undo.len = -1;
685 *el->el_line.lastchar = '\0'; /* just in case */
686
687 el->el_history.eventno -= el->el_state.argument;
688
689 if (el->el_history.eventno < 0) {
690 el->el_history.eventno = 0;
691 beep = CC_REFRESH_BEEP;
692 }
693 rval = hist_get(el);
694 if (rval == CC_REFRESH)
695 return beep;
696 return rval;
697
698}
699
700
701/* ed_search_prev_history():
702 * Search previous in history for a line matching the current
703 * next search history [M-P] [K]
704 */
705protected el_action_t
706/*ARGSUSED*/
707ed_search_prev_history(EditLine *el, int c __unused)
708{
709 const char *hp;
710 int h;
711 bool_t found = 0;
712
713 el->el_chared.c_vcmd.action = NOP;
714 el->el_chared.c_undo.len = -1;
715 *el->el_line.lastchar = '\0'; /* just in case */
716 if (el->el_history.eventno < 0) {
717#ifdef DEBUG_EDIT
718 (void) fprintf(el->el_errfile,
719 "e_prev_search_hist(): eventno < 0;\n");
720#endif
721 el->el_history.eventno = 0;
722 return (CC_ERROR);
723 }
724 if (el->el_history.eventno == 0) {
725 (void) strncpy(el->el_history.buf, el->el_line.buffer,
726 EL_BUFSIZ);
727 el->el_history.last = el->el_history.buf +
728 (el->el_line.lastchar - el->el_line.buffer);
729 }
730 if (el->el_history.ref == NULL)
731 return (CC_ERROR);
732
733 hp = HIST_FIRST(el);
734 if (hp == NULL)
735 return (CC_ERROR);
736
737 c_setpat(el); /* Set search pattern !! */
738
739 for (h = 1; h <= el->el_history.eventno; h++)
740 hp = HIST_NEXT(el);
741
742 while (hp != NULL) {
743#ifdef SDEBUG
744 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
745#endif
746 if ((strncmp(hp, el->el_line.buffer, (size_t)
747 (el->el_line.lastchar - el->el_line.buffer)) ||
748 hp[el->el_line.lastchar - el->el_line.buffer]) &&
749 c_hmatch(el, hp)) {
750 found++;
751 break;
752 }
753 h++;
754 hp = HIST_NEXT(el);
755 }
756
757 if (!found) {
758#ifdef SDEBUG
759 (void) fprintf(el->el_errfile, "not found\n");
760#endif
761 return (CC_ERROR);
762 }
763 el->el_history.eventno = h;
764
765 return (hist_get(el));
766}
767
768
769/* ed_search_next_history():
770 * Search next in history for a line matching the current
771 * [M-N] [J]
772 */
773protected el_action_t
774/*ARGSUSED*/
775ed_search_next_history(EditLine *el, int c __unused)
776{
777 const char *hp;
778 int h;
779 bool_t found = 0;
780
781 el->el_chared.c_vcmd.action = NOP;
782 el->el_chared.c_undo.len = -1;
783 *el->el_line.lastchar = '\0'; /* just in case */
784
785 if (el->el_history.eventno == 0)
786 return (CC_ERROR);
787
788 if (el->el_history.ref == NULL)
789 return (CC_ERROR);
790
791 hp = HIST_FIRST(el);
792 if (hp == NULL)
793 return (CC_ERROR);
794
795 c_setpat(el); /* Set search pattern !! */
796
797 for (h = 1; h < el->el_history.eventno && hp; h++) {
798#ifdef SDEBUG
799 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
800#endif
801 if ((strncmp(hp, el->el_line.buffer, (size_t)
802 (el->el_line.lastchar - el->el_line.buffer)) ||
803 hp[el->el_line.lastchar - el->el_line.buffer]) &&
804 c_hmatch(el, hp))
805 found = h;
806 hp = HIST_NEXT(el);
807 }
808
809 if (!found) { /* is it the current history number? */
810 if (!c_hmatch(el, el->el_history.buf)) {
811#ifdef SDEBUG
812 (void) fprintf(el->el_errfile, "not found\n");
813#endif
814 return (CC_ERROR);
815 }
816 }
817 el->el_history.eventno = found;
818
819 return (hist_get(el));
820}
821
822
823/* ed_prev_line():
824 * Move up one line
825 * Could be [k] [^p]
826 */
827protected el_action_t
828/*ARGSUSED*/
829ed_prev_line(EditLine *el, int c __unused)
830{
831 char *ptr;
832 int nchars = c_hpos(el);
833
834 /*
835 * Move to the line requested
836 */
837 if (*(ptr = el->el_line.cursor) == '\n')
838 ptr--;
839
840 for (; ptr >= el->el_line.buffer; ptr--)
841 if (*ptr == '\n' && --el->el_state.argument <= 0)
842 break;
843
844 if (el->el_state.argument > 0)
845 return (CC_ERROR);
846
847 /*
848 * Move to the beginning of the line
849 */
850 for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
851 continue;
852
853 /*
854 * Move to the character requested
855 */
856 for (ptr++;
857 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
858 ptr++)
859 continue;
860
861 el->el_line.cursor = ptr;
862 return (CC_CURSOR);
863}
864
865
866/* ed_next_line():
867 * Move down one line
868 * Could be [j] [^n]
869 */
870protected el_action_t
871/*ARGSUSED*/
872ed_next_line(EditLine *el, int c __unused)
873{
874 char *ptr;
875 int nchars = c_hpos(el);
876
877 /*
878 * Move to the line requested
879 */
880 for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
881 if (*ptr == '\n' && --el->el_state.argument <= 0)
882 break;
883
884 if (el->el_state.argument > 0)
885 return (CC_ERROR);
886
887 /*
888 * Move to the character requested
889 */
890 for (ptr++;
891 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
892 ptr++)
893 continue;
894
895 el->el_line.cursor = ptr;
896 return (CC_CURSOR);
897}
898
899
900/* ed_command():
901 * Editline extended command
902 * [M-X] [:]
903 */
904protected el_action_t
905/*ARGSUSED*/
906ed_command(EditLine *el, int c __unused)
907{
908 char tmpbuf[EL_BUFSIZ];
909 int tmplen;
910
911 tmplen = c_gets(el, tmpbuf, "\n: ");
912 term__putc('\n');
913
914 if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
915 term_beep(el);
916
917 el->el_map.current = el->el_map.key;
918 re_clear_display(el);
919 return CC_REFRESH;
920}
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 1.18 2005/08/08 14:05:37 christos Exp $
33 */
34
35#if !defined(lint) && !defined(SCCSID)
36static char sccsid[] = "@(#)common.c 8.1 (Berkeley) 6/4/93";
37#endif /* not lint && not SCCSID */
38#include <sys/cdefs.h>
39__FBSDID("$FreeBSD: head/lib/libedit/common.c 148900 2005-08-09 13:37:59Z stefanf $");
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 */
51protected el_action_t
52/*ARGSUSED*/
53ed_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 */
66protected el_action_t
67ed_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 */
108protected el_action_t
109/*ARGSUSED*/
110ed_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, 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 */
136protected el_action_t
137/*ARGSUSED*/
138ed_delete_next_char(EditLine *el, int c __unused)
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 term_overwrite(el, STReof, 4);
156 /* then do an EOF */
157 term__flush();
158 return (CC_EOF);
159#endif
160 } else {
161#ifdef KSHVI
162 el->el_line.cursor--;
163#else
164 return (CC_ERROR);
165#endif
166 }
167 } else {
168 if (el->el_line.cursor != el->el_line.buffer)
169 el->el_line.cursor--;
170 else
171 return (CC_ERROR);
172 }
173 }
174 c_delafter(el, el->el_state.argument); /* delete after dot */
175 if (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 */
187protected el_action_t
188/*ARGSUSED*/
189ed_kill_line(EditLine *el, int c __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 */
208protected el_action_t
209/*ARGSUSED*/
210ed_move_to_end(EditLine *el, int c __unused)
211{
212
213 el->el_line.cursor = el->el_line.lastchar;
214 if (el->el_map.type == MAP_VI) {
215#ifdef VI_MOVE
216 el->el_line.cursor--;
217#endif
218 if (el->el_chared.c_vcmd.action != NOP) {
219 cv_delfini(el);
220 return (CC_REFRESH);
221 }
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 */
231protected el_action_t
232/*ARGSUSED*/
233ed_move_to_beg(EditLine *el, int c __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((unsigned char) *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 */
255protected el_action_t
256ed_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 */
280protected el_action_t
281/*ARGSUSED*/
282ed_next_char(EditLine *el, int c __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 */
309protected el_action_t
310/*ARGSUSED*/
311ed_prev_word(EditLine *el, int c __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 */
335protected el_action_t
336/*ARGSUSED*/
337ed_prev_char(EditLine *el, int c __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 */
360protected el_action_t
361ed_quoted_insert(EditLine *el, int c)
362{
363 int num;
364 char tc;
365
366 tty_quotemode(el);
367 num = el_getc(el, &tc);
368 c = (unsigned char) 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 */
380protected el_action_t
381ed_digit(EditLine *el, int c)
382{
383
384 if (!isdigit((unsigned char) 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 */
408protected el_action_t
409ed_argument_digit(EditLine *el, int c)
410{
411
412 if (!isdigit((unsigned char) 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 */
432protected el_action_t
433/*ARGSUSED*/
434ed_unassigned(EditLine *el, int c __unused)
435{
436
437 return (CC_ERROR);
438}
439
440
441/**
442 ** TTY key handling.
443 **/
444
445/* ed_tty_sigint():
446 * Tty interrupt character
447 * [^C]
448 */
449protected el_action_t
450/*ARGSUSED*/
451ed_tty_sigint(EditLine *el __unused,
452 int c __unused)
453{
454
455 return (CC_NORM);
456}
457
458
459/* ed_tty_dsusp():
460 * Tty delayed suspend character
461 * [^Y]
462 */
463protected el_action_t
464/*ARGSUSED*/
465ed_tty_dsusp(EditLine *el __unused,
466 int c __unused)
467{
468
469 return (CC_NORM);
470}
471
472
473/* ed_tty_flush_output():
474 * Tty flush output characters
475 * [^O]
476 */
477protected el_action_t
478/*ARGSUSED*/
479ed_tty_flush_output(EditLine *el __unused,
480 int c __unused)
481{
482
483 return (CC_NORM);
484}
485
486
487/* ed_tty_sigquit():
488 * Tty quit character
489 * [^\]
490 */
491protected el_action_t
492/*ARGSUSED*/
493ed_tty_sigquit(EditLine *el __unused,
494 int c __unused)
495{
496
497 return (CC_NORM);
498}
499
500
501/* ed_tty_sigtstp():
502 * Tty suspend character
503 * [^Z]
504 */
505protected el_action_t
506/*ARGSUSED*/
507ed_tty_sigtstp(EditLine *el __unused,
508 int c __unused)
509{
510
511 return (CC_NORM);
512}
513
514
515/* ed_tty_stop_output():
516 * Tty disallow output characters
517 * [^S]
518 */
519protected el_action_t
520/*ARGSUSED*/
521ed_tty_stop_output(EditLine *el __unused,
522 int c __unused)
523{
524
525 return (CC_NORM);
526}
527
528
529/* ed_tty_start_output():
530 * Tty allow output characters
531 * [^Q]
532 */
533protected el_action_t
534/*ARGSUSED*/
535ed_tty_start_output(EditLine *el __unused,
536 int c __unused)
537{
538
539 return (CC_NORM);
540}
541
542
543/* ed_newline():
544 * Execute command
545 * [^J]
546 */
547protected el_action_t
548/*ARGSUSED*/
549ed_newline(EditLine *el, int c __unused)
550{
551
552 re_goto_bottom(el);
553 *el->el_line.lastchar++ = '\n';
554 *el->el_line.lastchar = '\0';
555 return (CC_NEWLINE);
556}
557
558
559/* ed_delete_prev_char():
560 * Delete the character to the left of the cursor
561 * [^?]
562 */
563protected el_action_t
564/*ARGSUSED*/
565ed_delete_prev_char(EditLine *el, int c __unused)
566{
567
568 if (el->el_line.cursor <= el->el_line.buffer)
569 return (CC_ERROR);
570
571 c_delbefore(el, el->el_state.argument);
572 el->el_line.cursor -= el->el_state.argument;
573 if (el->el_line.cursor < el->el_line.buffer)
574 el->el_line.cursor = el->el_line.buffer;
575 return (CC_REFRESH);
576}
577
578
579/* ed_clear_screen():
580 * Clear screen leaving current line at the top
581 * [^L]
582 */
583protected el_action_t
584/*ARGSUSED*/
585ed_clear_screen(EditLine *el, int c __unused)
586{
587
588 term_clear_screen(el); /* clear the whole real screen */
589 re_clear_display(el); /* reset everything */
590 return (CC_REFRESH);
591}
592
593
594/* ed_redisplay():
595 * Redisplay everything
596 * ^R
597 */
598protected el_action_t
599/*ARGSUSED*/
600ed_redisplay(EditLine *el __unused,
601 int c __unused)
602{
603
604 return (CC_REDISPLAY);
605}
606
607
608/* ed_start_over():
609 * Erase current line and start from scratch
610 * [^G]
611 */
612protected el_action_t
613/*ARGSUSED*/
614ed_start_over(EditLine *el, int c __unused)
615{
616
617 ch_reset(el, 0);
618 return (CC_REFRESH);
619}
620
621
622/* ed_sequence_lead_in():
623 * First character in a bound sequence
624 * Placeholder for external keys
625 */
626protected el_action_t
627/*ARGSUSED*/
628ed_sequence_lead_in(EditLine *el __unused,
629 int c __unused)
630{
631
632 return (CC_NORM);
633}
634
635
636/* ed_prev_history():
637 * Move to the previous history line
638 * [^P] [k]
639 */
640protected el_action_t
641/*ARGSUSED*/
642ed_prev_history(EditLine *el, int c __unused)
643{
644 char beep = 0;
645 int sv_event = el->el_history.eventno;
646
647 el->el_chared.c_undo.len = -1;
648 *el->el_line.lastchar = '\0'; /* just in case */
649
650 if (el->el_history.eventno == 0) { /* save the current buffer
651 * away */
652 (void) strncpy(el->el_history.buf, el->el_line.buffer,
653 EL_BUFSIZ);
654 el->el_history.last = el->el_history.buf +
655 (el->el_line.lastchar - el->el_line.buffer);
656 }
657 el->el_history.eventno += el->el_state.argument;
658
659 if (hist_get(el) == CC_ERROR) {
660 if (el->el_map.type == MAP_VI) {
661 el->el_history.eventno = sv_event;
662 return CC_ERROR;
663 }
664 beep = 1;
665 /* el->el_history.eventno was fixed by first call */
666 (void) hist_get(el);
667 }
668 if (beep)
669 return CC_REFRESH_BEEP;
670 return CC_REFRESH;
671}
672
673
674/* ed_next_history():
675 * Move to the next history line
676 * [^N] [j]
677 */
678protected el_action_t
679/*ARGSUSED*/
680ed_next_history(EditLine *el, int c __unused)
681{
682 el_action_t beep = CC_REFRESH, rval;
683
684 el->el_chared.c_undo.len = -1;
685 *el->el_line.lastchar = '\0'; /* just in case */
686
687 el->el_history.eventno -= el->el_state.argument;
688
689 if (el->el_history.eventno < 0) {
690 el->el_history.eventno = 0;
691 beep = CC_REFRESH_BEEP;
692 }
693 rval = hist_get(el);
694 if (rval == CC_REFRESH)
695 return beep;
696 return rval;
697
698}
699
700
701/* ed_search_prev_history():
702 * Search previous in history for a line matching the current
703 * next search history [M-P] [K]
704 */
705protected el_action_t
706/*ARGSUSED*/
707ed_search_prev_history(EditLine *el, int c __unused)
708{
709 const char *hp;
710 int h;
711 bool_t found = 0;
712
713 el->el_chared.c_vcmd.action = NOP;
714 el->el_chared.c_undo.len = -1;
715 *el->el_line.lastchar = '\0'; /* just in case */
716 if (el->el_history.eventno < 0) {
717#ifdef DEBUG_EDIT
718 (void) fprintf(el->el_errfile,
719 "e_prev_search_hist(): eventno < 0;\n");
720#endif
721 el->el_history.eventno = 0;
722 return (CC_ERROR);
723 }
724 if (el->el_history.eventno == 0) {
725 (void) strncpy(el->el_history.buf, el->el_line.buffer,
726 EL_BUFSIZ);
727 el->el_history.last = el->el_history.buf +
728 (el->el_line.lastchar - el->el_line.buffer);
729 }
730 if (el->el_history.ref == NULL)
731 return (CC_ERROR);
732
733 hp = HIST_FIRST(el);
734 if (hp == NULL)
735 return (CC_ERROR);
736
737 c_setpat(el); /* Set search pattern !! */
738
739 for (h = 1; h <= el->el_history.eventno; h++)
740 hp = HIST_NEXT(el);
741
742 while (hp != NULL) {
743#ifdef SDEBUG
744 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
745#endif
746 if ((strncmp(hp, el->el_line.buffer, (size_t)
747 (el->el_line.lastchar - el->el_line.buffer)) ||
748 hp[el->el_line.lastchar - el->el_line.buffer]) &&
749 c_hmatch(el, hp)) {
750 found++;
751 break;
752 }
753 h++;
754 hp = HIST_NEXT(el);
755 }
756
757 if (!found) {
758#ifdef SDEBUG
759 (void) fprintf(el->el_errfile, "not found\n");
760#endif
761 return (CC_ERROR);
762 }
763 el->el_history.eventno = h;
764
765 return (hist_get(el));
766}
767
768
769/* ed_search_next_history():
770 * Search next in history for a line matching the current
771 * [M-N] [J]
772 */
773protected el_action_t
774/*ARGSUSED*/
775ed_search_next_history(EditLine *el, int c __unused)
776{
777 const char *hp;
778 int h;
779 bool_t found = 0;
780
781 el->el_chared.c_vcmd.action = NOP;
782 el->el_chared.c_undo.len = -1;
783 *el->el_line.lastchar = '\0'; /* just in case */
784
785 if (el->el_history.eventno == 0)
786 return (CC_ERROR);
787
788 if (el->el_history.ref == NULL)
789 return (CC_ERROR);
790
791 hp = HIST_FIRST(el);
792 if (hp == NULL)
793 return (CC_ERROR);
794
795 c_setpat(el); /* Set search pattern !! */
796
797 for (h = 1; h < el->el_history.eventno && hp; h++) {
798#ifdef SDEBUG
799 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
800#endif
801 if ((strncmp(hp, el->el_line.buffer, (size_t)
802 (el->el_line.lastchar - el->el_line.buffer)) ||
803 hp[el->el_line.lastchar - el->el_line.buffer]) &&
804 c_hmatch(el, hp))
805 found = h;
806 hp = HIST_NEXT(el);
807 }
808
809 if (!found) { /* is it the current history number? */
810 if (!c_hmatch(el, el->el_history.buf)) {
811#ifdef SDEBUG
812 (void) fprintf(el->el_errfile, "not found\n");
813#endif
814 return (CC_ERROR);
815 }
816 }
817 el->el_history.eventno = found;
818
819 return (hist_get(el));
820}
821
822
823/* ed_prev_line():
824 * Move up one line
825 * Could be [k] [^p]
826 */
827protected el_action_t
828/*ARGSUSED*/
829ed_prev_line(EditLine *el, int c __unused)
830{
831 char *ptr;
832 int nchars = c_hpos(el);
833
834 /*
835 * Move to the line requested
836 */
837 if (*(ptr = el->el_line.cursor) == '\n')
838 ptr--;
839
840 for (; ptr >= el->el_line.buffer; ptr--)
841 if (*ptr == '\n' && --el->el_state.argument <= 0)
842 break;
843
844 if (el->el_state.argument > 0)
845 return (CC_ERROR);
846
847 /*
848 * Move to the beginning of the line
849 */
850 for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
851 continue;
852
853 /*
854 * Move to the character requested
855 */
856 for (ptr++;
857 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
858 ptr++)
859 continue;
860
861 el->el_line.cursor = ptr;
862 return (CC_CURSOR);
863}
864
865
866/* ed_next_line():
867 * Move down one line
868 * Could be [j] [^n]
869 */
870protected el_action_t
871/*ARGSUSED*/
872ed_next_line(EditLine *el, int c __unused)
873{
874 char *ptr;
875 int nchars = c_hpos(el);
876
877 /*
878 * Move to the line requested
879 */
880 for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
881 if (*ptr == '\n' && --el->el_state.argument <= 0)
882 break;
883
884 if (el->el_state.argument > 0)
885 return (CC_ERROR);
886
887 /*
888 * Move to the character requested
889 */
890 for (ptr++;
891 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
892 ptr++)
893 continue;
894
895 el->el_line.cursor = ptr;
896 return (CC_CURSOR);
897}
898
899
900/* ed_command():
901 * Editline extended command
902 * [M-X] [:]
903 */
904protected el_action_t
905/*ARGSUSED*/
906ed_command(EditLine *el, int c __unused)
907{
908 char tmpbuf[EL_BUFSIZ];
909 int tmplen;
910
911 tmplen = c_gets(el, tmpbuf, "\n: ");
912 term__putc('\n');
913
914 if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
915 term_beep(el);
916
917 el->el_map.current = el->el_map.key;
918 re_clear_display(el);
919 return CC_REFRESH;
920}