source: heimdal/trunk/lib/libedit/src/common.c

Last change on this file was 1, checked in by Paul Smedley, 10 years ago

Initial commit of Heimdal 1.5.3
File size: 19.4 KB
Line 
1/* $NetBSD: common.c,v 1.24 2009/12/30 22:37:40 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
38static char sccsid[] = "@(#)common.c 8.1 (Berkeley) 6/4/93";
39#else
40__RCSID("$NetBSD: common.c,v 1.24 2009/12/30 22:37:40 christos Exp $");
41#endif
42#endif /* not lint && not SCCSID */
43
44/*
45 * common.c: Common Editor functions
46 */
47#include "el.h"
48
49/* ed_end_of_file():
50 * Indicate end of file
51 * [^D]
52 */
53protected el_action_t
54/*ARGSUSED*/
55ed_end_of_file(EditLine *el, Int c __attribute__((__unused__)))
56{
57
58 re_goto_bottom(el);
59 *el->el_line.lastchar = '\0';
60 return (CC_EOF);
61}
62
63
64/* ed_insert():
65 * Add character to the line
66 * Insert a character [bound to all insert keys]
67 */
68protected el_action_t
69ed_insert(EditLine *el, Int c)
70{
71 int count = el->el_state.argument;
72
73 if (c == '\0')
74 return (CC_ERROR);
75
76 if (el->el_line.lastchar + el->el_state.argument >=
77 el->el_line.limit) {
78 /* end of buffer space, try to allocate more */
79 if (!ch_enlargebufs(el, (size_t) count))
80 return CC_ERROR; /* error allocating more */
81 }
82
83 if (count == 1) {
84 if (el->el_state.inputmode == MODE_INSERT
85 || el->el_line.cursor >= el->el_line.lastchar)
86 c_insert(el, 1);
87
88 *el->el_line.cursor++ = c;
89 re_fastaddc(el); /* fast refresh for one char. */
90 } else {
91 if (el->el_state.inputmode != MODE_REPLACE_1)
92 c_insert(el, el->el_state.argument);
93
94 while (count-- && el->el_line.cursor < el->el_line.lastchar)
95 *el->el_line.cursor++ = c;
96 re_refresh(el);
97 }
98
99 if (el->el_state.inputmode == MODE_REPLACE_1)
100 return vi_command_mode(el, 0);
101
102 return (CC_NORM);
103}
104
105
106/* ed_delete_prev_word():
107 * Delete from beginning of current word to cursor
108 * [M-^?] [^W]
109 */
110protected el_action_t
111/*ARGSUSED*/
112ed_delete_prev_word(EditLine *el, Int c __attribute__((__unused__)))
113{
114 Char *cp, *p, *kp;
115
116 if (el->el_line.cursor == el->el_line.buffer)
117 return (CC_ERROR);
118
119 cp = c__prev_word(el->el_line.cursor, el->el_line.buffer,
120 el->el_state.argument, ce__isword);
121
122 for (p = cp, kp = el->el_chared.c_kill.buf; p < el->el_line.cursor; p++)
123 *kp++ = *p;
124 el->el_chared.c_kill.last = kp;
125
126 c_delbefore(el, (int)(el->el_line.cursor - cp));/* delete before dot */
127 el->el_line.cursor = cp;
128 if (el->el_line.cursor < el->el_line.buffer)
129 el->el_line.cursor = el->el_line.buffer; /* bounds check */
130 return (CC_REFRESH);
131}
132
133
134/* ed_delete_next_char():
135 * Delete character under cursor
136 * [^D] [x]
137 */
138protected el_action_t
139/*ARGSUSED*/
140ed_delete_next_char(EditLine *el, Int c)
141{
142#ifdef notdef /* XXX */
143#define EL el->el_line
144 (void) fprintf(el->el_errlfile,
145 "\nD(b: %x(%s) c: %x(%s) last: %x(%s) limit: %x(%s)\n",
146 EL.buffer, EL.buffer, EL.cursor, EL.cursor, EL.lastchar,
147 EL.lastchar, EL.limit, EL.limit);
148#endif
149 if (el->el_line.cursor == el->el_line.lastchar) {
150 /* if I'm at the end */
151 if (el->el_map.type == MAP_VI) {
152 if (el->el_line.cursor == el->el_line.buffer) {
153 /* if I'm also at the beginning */
154#ifdef KSHVI
155 return (CC_ERROR);
156#else
157 /* then do an EOF */
158 term_writec(el, c);
159 return (CC_EOF);
160#endif
161 } else {
162#ifdef KSHVI
163 el->el_line.cursor--;
164#else
165 return (CC_ERROR);
166#endif
167 }
168 } else {
169 if (el->el_line.cursor != el->el_line.buffer)
170 el->el_line.cursor--;
171 else
172 return (CC_ERROR);
173 }
174 }
175 c_delafter(el, el->el_state.argument); /* delete after dot */
176 if (el->el_line.cursor >= el->el_line.lastchar &&
177 el->el_line.cursor > el->el_line.buffer)
178 /* bounds check */
179 el->el_line.cursor = el->el_line.lastchar - 1;
180 return (CC_REFRESH);
181}
182
183
184/* ed_kill_line():
185 * Cut to the end of line
186 * [^K] [^K]
187 */
188protected el_action_t
189/*ARGSUSED*/
190ed_kill_line(EditLine *el, Int c __attribute__((__unused__)))
191{
192 Char *kp, *cp;
193
194 cp = el->el_line.cursor;
195 kp = el->el_chared.c_kill.buf;
196 while (cp < el->el_line.lastchar)
197 *kp++ = *cp++; /* copy it */
198 el->el_chared.c_kill.last = kp;
199 /* zap! -- delete to end */
200 el->el_line.lastchar = el->el_line.cursor;
201 return (CC_REFRESH);
202}
203
204
205/* ed_move_to_end():
206 * Move cursor to the end of line
207 * [^E] [^E]
208 */
209protected el_action_t
210/*ARGSUSED*/
211ed_move_to_end(EditLine *el, Int c __attribute__((__unused__)))
212{
213
214 el->el_line.cursor = el->el_line.lastchar;
215 if (el->el_map.type == MAP_VI) {
216 if (el->el_chared.c_vcmd.action != NOP) {
217 cv_delfini(el);
218 return (CC_REFRESH);
219 }
220#ifdef VI_MOVE
221 el->el_line.cursor--;
222#endif
223 }
224 return (CC_CURSOR);
225}
226
227
228/* ed_move_to_beg():
229 * Move cursor to the beginning of line
230 * [^A] [^A]
231 */
232protected el_action_t
233/*ARGSUSED*/
234ed_move_to_beg(EditLine *el, Int c __attribute__((__unused__)))
235{
236
237 el->el_line.cursor = el->el_line.buffer;
238
239 if (el->el_map.type == MAP_VI) {
240 /* We want FIRST non space character */
241 while (Isspace(*el->el_line.cursor))
242 el->el_line.cursor++;
243 if (el->el_chared.c_vcmd.action != NOP) {
244 cv_delfini(el);
245 return (CC_REFRESH);
246 }
247 }
248 return (CC_CURSOR);
249}
250
251
252/* ed_transpose_chars():
253 * Exchange the character to the left of the cursor with the one under it
254 * [^T] [^T]
255 */
256protected el_action_t
257ed_transpose_chars(EditLine *el, Int c)
258{
259
260 if (el->el_line.cursor < el->el_line.lastchar) {
261 if (el->el_line.lastchar <= &el->el_line.buffer[1])
262 return (CC_ERROR);
263 else
264 el->el_line.cursor++;
265 }
266 if (el->el_line.cursor > &el->el_line.buffer[1]) {
267 /* must have at least two chars entered */
268 c = el->el_line.cursor[-2];
269 el->el_line.cursor[-2] = el->el_line.cursor[-1];
270 el->el_line.cursor[-1] = c;
271 return (CC_REFRESH);
272 } else
273 return (CC_ERROR);
274}
275
276
277/* ed_next_char():
278 * Move to the right one character
279 * [^F] [^F]
280 */
281protected el_action_t
282/*ARGSUSED*/
283ed_next_char(EditLine *el, Int c __attribute__((__unused__)))
284{
285 Char *lim = el->el_line.lastchar;
286
287 if (el->el_line.cursor >= lim ||
288 (el->el_line.cursor == lim - 1 &&
289 el->el_map.type == MAP_VI &&
290 el->el_chared.c_vcmd.action == NOP))
291 return (CC_ERROR);
292
293 el->el_line.cursor += el->el_state.argument;
294 if (el->el_line.cursor > lim)
295 el->el_line.cursor = lim;
296
297 if (el->el_map.type == MAP_VI)
298 if (el->el_chared.c_vcmd.action != NOP) {
299 cv_delfini(el);
300 return (CC_REFRESH);
301 }
302 return (CC_CURSOR);
303}
304
305
306/* ed_prev_word():
307 * Move to the beginning of the current word
308 * [M-b] [b]
309 */
310protected el_action_t
311/*ARGSUSED*/
312ed_prev_word(EditLine *el, Int c __attribute__((__unused__)))
313{
314
315 if (el->el_line.cursor == el->el_line.buffer)
316 return (CC_ERROR);
317
318 el->el_line.cursor = c__prev_word(el->el_line.cursor,
319 el->el_line.buffer,
320 el->el_state.argument,
321 ce__isword);
322
323 if (el->el_map.type == MAP_VI)
324 if (el->el_chared.c_vcmd.action != NOP) {
325 cv_delfini(el);
326 return (CC_REFRESH);
327 }
328 return (CC_CURSOR);
329}
330
331
332/* ed_prev_char():
333 * Move to the left one character
334 * [^B] [^B]
335 */
336protected el_action_t
337/*ARGSUSED*/
338ed_prev_char(EditLine *el, Int c __attribute__((__unused__)))
339{
340
341 if (el->el_line.cursor > el->el_line.buffer) {
342 el->el_line.cursor -= el->el_state.argument;
343 if (el->el_line.cursor < el->el_line.buffer)
344 el->el_line.cursor = el->el_line.buffer;
345
346 if (el->el_map.type == MAP_VI)
347 if (el->el_chared.c_vcmd.action != NOP) {
348 cv_delfini(el);
349 return (CC_REFRESH);
350 }
351 return (CC_CURSOR);
352 } else
353 return (CC_ERROR);
354}
355
356
357/* ed_quoted_insert():
358 * Add the next character typed verbatim
359 * [^V] [^V]
360 */
361protected el_action_t
362ed_quoted_insert(EditLine *el, Int c)
363{
364 int num;
365 Char tc;
366
367 tty_quotemode(el);
368 num = FUN(el,getc)(el, &tc);
369 c = tc;
370 tty_noquotemode(el);
371 if (num == 1)
372 return (ed_insert(el, c));
373 else
374 return (ed_end_of_file(el, 0));
375}
376
377
378/* ed_digit():
379 * Adds to argument or enters a digit
380 */
381protected el_action_t
382ed_digit(EditLine *el, Int c)
383{
384
385 if (!Isdigit(c))
386 return (CC_ERROR);
387
388 if (el->el_state.doingarg) {
389 /* if doing an arg, add this in... */
390 if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
391 el->el_state.argument = c - '0';
392 else {
393 if (el->el_state.argument > 1000000)
394 return (CC_ERROR);
395 el->el_state.argument =
396 (el->el_state.argument * 10) + (c - '0');
397 }
398 return (CC_ARGHACK);
399 }
400
401 return ed_insert(el, c);
402}
403
404
405/* ed_argument_digit():
406 * Digit that starts argument
407 * For ESC-n
408 */
409protected el_action_t
410ed_argument_digit(EditLine *el, Int c)
411{
412
413 if (!Isdigit(c))
414 return (CC_ERROR);
415
416 if (el->el_state.doingarg) {
417 if (el->el_state.argument > 1000000)
418 return (CC_ERROR);
419 el->el_state.argument = (el->el_state.argument * 10) +
420 (c - '0');
421 } else { /* else starting an argument */
422 el->el_state.argument = c - '0';
423 el->el_state.doingarg = 1;
424 }
425 return (CC_ARGHACK);
426}
427
428
429/* ed_unassigned():
430 * Indicates unbound character
431 * Bound to keys that are not assigned
432 */
433protected el_action_t
434/*ARGSUSED*/
435ed_unassigned(EditLine *el, 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 */
450protected el_action_t
451/*ARGSUSED*/
452ed_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 */
464protected el_action_t
465/*ARGSUSED*/
466ed_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 */
478protected el_action_t
479/*ARGSUSED*/
480ed_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 */
492protected el_action_t
493/*ARGSUSED*/
494ed_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 */
506protected el_action_t
507/*ARGSUSED*/
508ed_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 */
520protected el_action_t
521/*ARGSUSED*/
522ed_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 */
534protected el_action_t
535/*ARGSUSED*/
536ed_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 */
548protected el_action_t
549/*ARGSUSED*/
550ed_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 */
564protected el_action_t
565/*ARGSUSED*/
566ed_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 */
584protected el_action_t
585/*ARGSUSED*/
586ed_clear_screen(EditLine *el, Int c __attribute__((__unused__)))
587{
588
589 term_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 */
599protected el_action_t
600/*ARGSUSED*/
601ed_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 */
613protected el_action_t
614/*ARGSUSED*/
615ed_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 */
627protected el_action_t
628/*ARGSUSED*/
629ed_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 */
641protected el_action_t
642/*ARGSUSED*/
643ed_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 */
679protected el_action_t
680/*ARGSUSED*/
681ed_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 */
706protected el_action_t
707/*ARGSUSED*/
708ed_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 */
774protected el_action_t
775/*ARGSUSED*/
776ed_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 */
828protected el_action_t
829/*ARGSUSED*/
830ed_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 */
871protected el_action_t
872/*ARGSUSED*/
873ed_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 */
905protected el_action_t
906/*ARGSUSED*/
907ed_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 term__putc(el, '\n');
914
915 if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
916 term_beep(el);
917
918 el->el_map.current = el->el_map.key;
919 re_clear_display(el);
920 return CC_REFRESH;
921}
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