1 /* $NetBSD: common.c,v 1.40 2016/03/02 19:24:20 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 1.40 2016/03/02 19:24:20 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 <ctype.h>
50 #include <string.h>
51
52 #include "el.h"
53 #include "common.h"
54 #include "parse.h"
55 #include "vi.h"
56
57 /* ed_end_of_file():
58 * Indicate end of file
59 * [^D]
60 */
61 protected el_action_t
62 /*ARGSUSED*/
ed_end_of_file(EditLine * el,wint_t c)63 ed_end_of_file(EditLine *el, wint_t c __attribute__((__unused__)))
64 {
65
66 re_goto_bottom(el);
67 *el->el_line.lastchar = '\0';
68 return CC_EOF;
69 }
70
71
72 /* ed_insert():
73 * Add character to the line
74 * Insert a character [bound to all insert keys]
75 */
76 protected el_action_t
ed_insert(EditLine * el,wint_t c)77 ed_insert(EditLine *el, wint_t c)
78 {
79 int count = el->el_state.argument;
80
81 if (c == '\0')
82 return CC_ERROR;
83
84 if (el->el_line.lastchar + el->el_state.argument >=
85 el->el_line.limit) {
86 /* end of buffer space, try to allocate more */
87 if (!ch_enlargebufs(el, (size_t) count))
88 return CC_ERROR; /* error allocating more */
89 }
90
91 if (count == 1) {
92 if (el->el_state.inputmode == MODE_INSERT
93 || el->el_line.cursor >= el->el_line.lastchar)
94 c_insert(el, 1);
95
96 *el->el_line.cursor++ = (Char)c;
97 re_fastaddc(el); /* fast refresh for one char. */
98 } else {
99 if (el->el_state.inputmode != MODE_REPLACE_1)
100 c_insert(el, el->el_state.argument);
101
102 while (count-- && el->el_line.cursor < el->el_line.lastchar)
103 *el->el_line.cursor++ = (Char)c;
104 re_refresh(el);
105 }
106
107 if (el->el_state.inputmode == MODE_REPLACE_1)
108 return vi_command_mode(el, 0);
109
110 return CC_NORM;
111 }
112
113
114 /* ed_delete_prev_word():
115 * Delete from beginning of current word to cursor
116 * [M-^?] [^W]
117 */
118 protected el_action_t
119 /*ARGSUSED*/
ed_delete_prev_word(EditLine * el,wint_t c)120 ed_delete_prev_word(EditLine *el, wint_t c __attribute__((__unused__)))
121 {
122 Char *cp, *p, *kp;
123
124 if (el->el_line.cursor == el->el_line.buffer)
125 return CC_ERROR;
126
127 cp = c__prev_word(el->el_line.cursor, el->el_line.buffer,
128 el->el_state.argument, ce__isword);
129
130 for (p = cp, kp = el->el_chared.c_kill.buf; p < el->el_line.cursor; p++)
131 *kp++ = *p;
132 el->el_chared.c_kill.last = kp;
133
134 c_delbefore(el, (int)(el->el_line.cursor - cp));/* delete before dot */
135 el->el_line.cursor = cp;
136 if (el->el_line.cursor < el->el_line.buffer)
137 el->el_line.cursor = el->el_line.buffer; /* bounds check */
138 return CC_REFRESH;
139 }
140
141
142 /* ed_delete_next_char():
143 * Delete character under cursor
144 * [^D] [x]
145 */
146 protected el_action_t
147 /*ARGSUSED*/
ed_delete_next_char(EditLine * el,wint_t c)148 ed_delete_next_char(EditLine *el, wint_t c __attribute__((__unused__)))
149 {
150 #ifdef DEBUG_EDIT
151 #define EL el->el_line
152 (void) fprintf(el->el_errfile,
153 "\nD(b: %p(" FSTR ") c: %p(" FSTR ") last: %p(" FSTR
154 ") limit: %p(" FSTR ")\n",
155 EL.buffer, EL.buffer, EL.cursor, EL.cursor, EL.lastchar,
156 EL.lastchar, EL.limit, EL.limit);
157 #endif
158 if (el->el_line.cursor == el->el_line.lastchar) {
159 /* if I'm at the end */
160 if (el->el_map.type == MAP_VI) {
161 if (el->el_line.cursor == el->el_line.buffer) {
162 /* if I'm also at the beginning */
163 #ifdef KSHVI
164 return CC_ERROR;
165 #else
166 /* then do an EOF */
167 terminal_writec(el, c);
168 return CC_EOF;
169 #endif
170 } else {
171 #ifdef KSHVI
172 el->el_line.cursor--;
173 #else
174 return CC_ERROR;
175 #endif
176 }
177 } else
178 return CC_ERROR;
179 }
180 c_delafter(el, el->el_state.argument); /* delete after dot */
181 if (el->el_map.type == MAP_VI &&
182 el->el_line.cursor >= el->el_line.lastchar &&
183 el->el_line.cursor > el->el_line.buffer)
184 /* bounds check */
185 el->el_line.cursor = el->el_line.lastchar - 1;
186 return CC_REFRESH;
187 }
188
189
190 /* ed_kill_line():
191 * Cut to the end of line
192 * [^K] [^K]
193 */
194 protected el_action_t
195 /*ARGSUSED*/
ed_kill_line(EditLine * el,wint_t c)196 ed_kill_line(EditLine *el, wint_t c __attribute__((__unused__)))
197 {
198 Char *kp, *cp;
199
200 cp = el->el_line.cursor;
201 kp = el->el_chared.c_kill.buf;
202 while (cp < el->el_line.lastchar)
203 *kp++ = *cp++; /* copy it */
204 el->el_chared.c_kill.last = kp;
205 /* zap! -- delete to end */
206 el->el_line.lastchar = el->el_line.cursor;
207 return CC_REFRESH;
208 }
209
210
211 /* ed_move_to_end():
212 * Move cursor to the end of line
213 * [^E] [^E]
214 */
215 protected el_action_t
216 /*ARGSUSED*/
ed_move_to_end(EditLine * el,wint_t c)217 ed_move_to_end(EditLine *el, wint_t c __attribute__((__unused__)))
218 {
219
220 el->el_line.cursor = el->el_line.lastchar;
221 if (el->el_map.type == MAP_VI) {
222 if (el->el_chared.c_vcmd.action != NOP) {
223 cv_delfini(el);
224 return CC_REFRESH;
225 }
226 #ifdef VI_MOVE
227 el->el_line.cursor--;
228 #endif
229 }
230 return CC_CURSOR;
231 }
232
233
234 /* ed_move_to_beg():
235 * Move cursor to the beginning of line
236 * [^A] [^A]
237 */
238 protected el_action_t
239 /*ARGSUSED*/
ed_move_to_beg(EditLine * el,wint_t c)240 ed_move_to_beg(EditLine *el, wint_t c __attribute__((__unused__)))
241 {
242
243 el->el_line.cursor = el->el_line.buffer;
244
245 if (el->el_map.type == MAP_VI) {
246 /* We want FIRST non space character */
247 while (Isspace(*el->el_line.cursor))
248 el->el_line.cursor++;
249 if (el->el_chared.c_vcmd.action != NOP) {
250 cv_delfini(el);
251 return CC_REFRESH;
252 }
253 }
254 return CC_CURSOR;
255 }
256
257
258 /* ed_transpose_chars():
259 * Exchange the character to the left of the cursor with the one under it
260 * [^T] [^T]
261 */
262 protected el_action_t
ed_transpose_chars(EditLine * el,wint_t c)263 ed_transpose_chars(EditLine *el, wint_t c)
264 {
265
266 if (el->el_line.cursor < el->el_line.lastchar) {
267 if (el->el_line.lastchar <= &el->el_line.buffer[1])
268 return CC_ERROR;
269 else
270 el->el_line.cursor++;
271 }
272 if (el->el_line.cursor > &el->el_line.buffer[1]) {
273 /* must have at least two chars entered */
274 c = el->el_line.cursor[-2];
275 el->el_line.cursor[-2] = el->el_line.cursor[-1];
276 el->el_line.cursor[-1] = (Char)c;
277 return CC_REFRESH;
278 } else
279 return CC_ERROR;
280 }
281
282
283 /* ed_next_char():
284 * Move to the right one character
285 * [^F] [^F]
286 */
287 protected el_action_t
288 /*ARGSUSED*/
ed_next_char(EditLine * el,wint_t c)289 ed_next_char(EditLine *el, wint_t c __attribute__((__unused__)))
290 {
291 Char *lim = el->el_line.lastchar;
292
293 if (el->el_line.cursor >= lim ||
294 (el->el_line.cursor == lim - 1 &&
295 el->el_map.type == MAP_VI &&
296 el->el_chared.c_vcmd.action == NOP))
297 return CC_ERROR;
298
299 el->el_line.cursor += el->el_state.argument;
300 if (el->el_line.cursor > lim)
301 el->el_line.cursor = lim;
302
303 if (el->el_map.type == MAP_VI)
304 if (el->el_chared.c_vcmd.action != NOP) {
305 cv_delfini(el);
306 return CC_REFRESH;
307 }
308 return CC_CURSOR;
309 }
310
311
312 /* ed_prev_word():
313 * Move to the beginning of the current word
314 * [M-b] [b]
315 */
316 protected el_action_t
317 /*ARGSUSED*/
ed_prev_word(EditLine * el,wint_t c)318 ed_prev_word(EditLine *el, wint_t c __attribute__((__unused__)))
319 {
320
321 if (el->el_line.cursor == el->el_line.buffer)
322 return CC_ERROR;
323
324 el->el_line.cursor = c__prev_word(el->el_line.cursor,
325 el->el_line.buffer,
326 el->el_state.argument,
327 ce__isword);
328
329 if (el->el_map.type == MAP_VI)
330 if (el->el_chared.c_vcmd.action != NOP) {
331 cv_delfini(el);
332 return CC_REFRESH;
333 }
334 return CC_CURSOR;
335 }
336
337
338 /* ed_prev_char():
339 * Move to the left one character
340 * [^B] [^B]
341 */
342 protected el_action_t
343 /*ARGSUSED*/
ed_prev_char(EditLine * el,wint_t c)344 ed_prev_char(EditLine *el, wint_t c __attribute__((__unused__)))
345 {
346
347 if (el->el_line.cursor > el->el_line.buffer) {
348 el->el_line.cursor -= el->el_state.argument;
349 if (el->el_line.cursor < el->el_line.buffer)
350 el->el_line.cursor = el->el_line.buffer;
351
352 if (el->el_map.type == MAP_VI)
353 if (el->el_chared.c_vcmd.action != NOP) {
354 cv_delfini(el);
355 return CC_REFRESH;
356 }
357 return CC_CURSOR;
358 } else
359 return CC_ERROR;
360 }
361
362
363 /* ed_quoted_insert():
364 * Add the next character typed verbatim
365 * [^V] [^V]
366 */
367 protected el_action_t
ed_quoted_insert(EditLine * el,wint_t c)368 ed_quoted_insert(EditLine *el, wint_t c)
369 {
370 int num;
371
372 tty_quotemode(el);
373 num = el_wgetc(el, &c);
374 tty_noquotemode(el);
375 if (num == 1)
376 return ed_insert(el, c);
377 else
378 return ed_end_of_file(el, 0);
379 }
380
381
382 /* ed_digit():
383 * Adds to argument or enters a digit
384 */
385 protected el_action_t
ed_digit(EditLine * el,wint_t c)386 ed_digit(EditLine *el, wint_t c)
387 {
388
389 if (!Isdigit(c))
390 return CC_ERROR;
391
392 if (el->el_state.doingarg) {
393 /* if doing an arg, add this in... */
394 if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
395 el->el_state.argument = c - '0';
396 else {
397 if (el->el_state.argument > 1000000)
398 return CC_ERROR;
399 el->el_state.argument =
400 (el->el_state.argument * 10) + (c - '0');
401 }
402 return CC_ARGHACK;
403 }
404
405 return ed_insert(el, c);
406 }
407
408
409 /* ed_argument_digit():
410 * Digit that starts argument
411 * For ESC-n
412 */
413 protected el_action_t
ed_argument_digit(EditLine * el,wint_t c)414 ed_argument_digit(EditLine *el, wint_t c)
415 {
416
417 if (!Isdigit(c))
418 return CC_ERROR;
419
420 if (el->el_state.doingarg) {
421 if (el->el_state.argument > 1000000)
422 return CC_ERROR;
423 el->el_state.argument = (el->el_state.argument * 10) +
424 (c - '0');
425 } else { /* else starting an argument */
426 el->el_state.argument = c - '0';
427 el->el_state.doingarg = 1;
428 }
429 return CC_ARGHACK;
430 }
431
432
433 /* ed_unassigned():
434 * Indicates unbound character
435 * Bound to keys that are not assigned
436 */
437 protected el_action_t
438 /*ARGSUSED*/
ed_unassigned(EditLine * el,wint_t c)439 ed_unassigned(EditLine *el __attribute__((__unused__)),
440 wint_t c __attribute__((__unused__)))
441 {
442
443 return CC_ERROR;
444 }
445
446
447 /**
448 ** TTY key handling.
449 **/
450
451 /* ed_tty_sigint():
452 * Tty interrupt character
453 * [^C]
454 */
455 protected el_action_t
456 /*ARGSUSED*/
ed_tty_sigint(EditLine * el,wint_t c)457 ed_tty_sigint(EditLine *el __attribute__((__unused__)),
458 wint_t c __attribute__((__unused__)))
459 {
460
461 return CC_NORM;
462 }
463
464
465 /* ed_tty_dsusp():
466 * Tty delayed suspend character
467 * [^Y]
468 */
469 protected el_action_t
470 /*ARGSUSED*/
ed_tty_dsusp(EditLine * el,wint_t c)471 ed_tty_dsusp(EditLine *el __attribute__((__unused__)),
472 wint_t c __attribute__((__unused__)))
473 {
474
475 return CC_NORM;
476 }
477
478
479 /* ed_tty_flush_output():
480 * Tty flush output characters
481 * [^O]
482 */
483 protected el_action_t
484 /*ARGSUSED*/
ed_tty_flush_output(EditLine * el,wint_t c)485 ed_tty_flush_output(EditLine *el __attribute__((__unused__)),
486 wint_t c __attribute__((__unused__)))
487 {
488
489 return CC_NORM;
490 }
491
492
493 /* ed_tty_sigquit():
494 * Tty quit character
495 * [^\]
496 */
497 protected el_action_t
498 /*ARGSUSED*/
ed_tty_sigquit(EditLine * el,wint_t c)499 ed_tty_sigquit(EditLine *el __attribute__((__unused__)),
500 wint_t c __attribute__((__unused__)))
501 {
502
503 return CC_NORM;
504 }
505
506
507 /* ed_tty_sigtstp():
508 * Tty suspend character
509 * [^Z]
510 */
511 protected el_action_t
512 /*ARGSUSED*/
ed_tty_sigtstp(EditLine * el,wint_t c)513 ed_tty_sigtstp(EditLine *el __attribute__((__unused__)),
514 wint_t c __attribute__((__unused__)))
515 {
516
517 return CC_NORM;
518 }
519
520
521 /* ed_tty_stop_output():
522 * Tty disallow output characters
523 * [^S]
524 */
525 protected el_action_t
526 /*ARGSUSED*/
ed_tty_stop_output(EditLine * el,wint_t c)527 ed_tty_stop_output(EditLine *el __attribute__((__unused__)),
528 wint_t c __attribute__((__unused__)))
529 {
530
531 return CC_NORM;
532 }
533
534
535 /* ed_tty_start_output():
536 * Tty allow output characters
537 * [^Q]
538 */
539 protected el_action_t
540 /*ARGSUSED*/
ed_tty_start_output(EditLine * el,wint_t c)541 ed_tty_start_output(EditLine *el __attribute__((__unused__)),
542 wint_t c __attribute__((__unused__)))
543 {
544
545 return CC_NORM;
546 }
547
548
549 /* ed_newline():
550 * Execute command
551 * [^J]
552 */
553 protected el_action_t
554 /*ARGSUSED*/
ed_newline(EditLine * el,wint_t c)555 ed_newline(EditLine *el, wint_t c __attribute__((__unused__)))
556 {
557
558 re_goto_bottom(el);
559 *el->el_line.lastchar++ = '\n';
560 *el->el_line.lastchar = '\0';
561 return CC_NEWLINE;
562 }
563
564
565 /* ed_delete_prev_char():
566 * Delete the character to the left of the cursor
567 * [^?]
568 */
569 protected el_action_t
570 /*ARGSUSED*/
ed_delete_prev_char(EditLine * el,wint_t c)571 ed_delete_prev_char(EditLine *el, wint_t c __attribute__((__unused__)))
572 {
573
574 if (el->el_line.cursor <= el->el_line.buffer)
575 return CC_ERROR;
576
577 c_delbefore(el, el->el_state.argument);
578 el->el_line.cursor -= el->el_state.argument;
579 if (el->el_line.cursor < el->el_line.buffer)
580 el->el_line.cursor = el->el_line.buffer;
581 return CC_REFRESH;
582 }
583
584
585 /* ed_clear_screen():
586 * Clear screen leaving current line at the top
587 * [^L]
588 */
589 protected el_action_t
590 /*ARGSUSED*/
ed_clear_screen(EditLine * el,wint_t c)591 ed_clear_screen(EditLine *el, wint_t c __attribute__((__unused__)))
592 {
593
594 terminal_clear_screen(el); /* clear the whole real screen */
595 re_clear_display(el); /* reset everything */
596 return CC_REFRESH;
597 }
598
599
600 /* ed_redisplay():
601 * Redisplay everything
602 * ^R
603 */
604 protected el_action_t
605 /*ARGSUSED*/
ed_redisplay(EditLine * el,wint_t c)606 ed_redisplay(EditLine *el __attribute__((__unused__)),
607 wint_t c __attribute__((__unused__)))
608 {
609
610 return CC_REDISPLAY;
611 }
612
613
614 /* ed_start_over():
615 * Erase current line and start from scratch
616 * [^G]
617 */
618 protected el_action_t
619 /*ARGSUSED*/
ed_start_over(EditLine * el,wint_t c)620 ed_start_over(EditLine *el, wint_t c __attribute__((__unused__)))
621 {
622
623 ch_reset(el, 0);
624 return CC_REFRESH;
625 }
626
627
628 /* ed_sequence_lead_in():
629 * First character in a bound sequence
630 * Placeholder for external keys
631 */
632 protected el_action_t
633 /*ARGSUSED*/
ed_sequence_lead_in(EditLine * el,wint_t c)634 ed_sequence_lead_in(EditLine *el __attribute__((__unused__)),
635 wint_t c __attribute__((__unused__)))
636 {
637
638 return CC_NORM;
639 }
640
641
642 /* ed_prev_history():
643 * Move to the previous history line
644 * [^P] [k]
645 */
646 protected el_action_t
647 /*ARGSUSED*/
ed_prev_history(EditLine * el,wint_t c)648 ed_prev_history(EditLine *el, wint_t c __attribute__((__unused__)))
649 {
650 char beep = 0;
651 int sv_event = el->el_history.eventno;
652
653 el->el_chared.c_undo.len = -1;
654 *el->el_line.lastchar = '\0'; /* just in case */
655
656 if (el->el_history.eventno == 0) { /* save the current buffer
657 * away */
658 (void) Strncpy(el->el_history.buf, el->el_line.buffer,
659 EL_BUFSIZ);
660 el->el_history.last = el->el_history.buf +
661 (el->el_line.lastchar - el->el_line.buffer);
662 }
663 el->el_history.eventno += el->el_state.argument;
664
665 if (hist_get(el) == CC_ERROR) {
666 if (el->el_map.type == MAP_VI) {
667 el->el_history.eventno = sv_event;
668 }
669 beep = 1;
670 /* el->el_history.eventno was fixed by first call */
671 (void) hist_get(el);
672 }
673 if (beep)
674 return CC_REFRESH_BEEP;
675 return CC_REFRESH;
676 }
677
678
679 /* ed_next_history():
680 * Move to the next history line
681 * [^N] [j]
682 */
683 protected el_action_t
684 /*ARGSUSED*/
ed_next_history(EditLine * el,wint_t c)685 ed_next_history(EditLine *el, wint_t c __attribute__((__unused__)))
686 {
687 el_action_t beep = CC_REFRESH, rval;
688
689 el->el_chared.c_undo.len = -1;
690 *el->el_line.lastchar = '\0'; /* just in case */
691
692 el->el_history.eventno -= el->el_state.argument;
693
694 if (el->el_history.eventno < 0) {
695 el->el_history.eventno = 0;
696 beep = CC_REFRESH_BEEP;
697 }
698 rval = hist_get(el);
699 if (rval == CC_REFRESH)
700 return beep;
701 return rval;
702
703 }
704
705
706 /* ed_search_prev_history():
707 * Search previous in history for a line matching the current
708 * next search history [M-P] [K]
709 */
710 protected el_action_t
711 /*ARGSUSED*/
ed_search_prev_history(EditLine * el,wint_t c)712 ed_search_prev_history(EditLine *el, wint_t c __attribute__((__unused__)))
713 {
714 const Char *hp;
715 int h;
716 int found = 0;
717
718 el->el_chared.c_vcmd.action = NOP;
719 el->el_chared.c_undo.len = -1;
720 *el->el_line.lastchar = '\0'; /* just in case */
721 if (el->el_history.eventno < 0) {
722 #ifdef DEBUG_EDIT
723 (void) fprintf(el->el_errfile,
724 "e_prev_search_hist(): eventno < 0;\n");
725 #endif
726 el->el_history.eventno = 0;
727 return CC_ERROR;
728 }
729 if (el->el_history.eventno == 0) {
730 (void) Strncpy(el->el_history.buf, el->el_line.buffer,
731 EL_BUFSIZ);
732 el->el_history.last = el->el_history.buf +
733 (el->el_line.lastchar - el->el_line.buffer);
734 }
735 if (el->el_history.ref == NULL)
736 return CC_ERROR;
737
738 hp = HIST_FIRST(el);
739 if (hp == NULL)
740 return CC_ERROR;
741
742 c_setpat(el); /* Set search pattern !! */
743
744 for (h = 1; h <= el->el_history.eventno; h++)
745 hp = HIST_NEXT(el);
746
747 while (hp != NULL) {
748 #ifdef SDEBUG
749 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
750 #endif
751 if ((Strncmp(hp, el->el_line.buffer, (size_t)
752 (el->el_line.lastchar - el->el_line.buffer)) ||
753 hp[el->el_line.lastchar - el->el_line.buffer]) &&
754 c_hmatch(el, hp)) {
755 found = 1;
756 break;
757 }
758 h++;
759 hp = HIST_NEXT(el);
760 }
761
762 if (!found) {
763 #ifdef SDEBUG
764 (void) fprintf(el->el_errfile, "not found\n");
765 #endif
766 return CC_ERROR;
767 }
768 el->el_history.eventno = h;
769
770 return hist_get(el);
771 }
772
773
774 /* ed_search_next_history():
775 * Search next in history for a line matching the current
776 * [M-N] [J]
777 */
778 protected el_action_t
779 /*ARGSUSED*/
ed_search_next_history(EditLine * el,wint_t c)780 ed_search_next_history(EditLine *el, wint_t c __attribute__((__unused__)))
781 {
782 const Char *hp;
783 int h;
784 int found = 0;
785
786 el->el_chared.c_vcmd.action = NOP;
787 el->el_chared.c_undo.len = -1;
788 *el->el_line.lastchar = '\0'; /* just in case */
789
790 if (el->el_history.eventno == 0)
791 return CC_ERROR;
792
793 if (el->el_history.ref == NULL)
794 return CC_ERROR;
795
796 hp = HIST_FIRST(el);
797 if (hp == NULL)
798 return CC_ERROR;
799
800 c_setpat(el); /* Set search pattern !! */
801
802 for (h = 1; h < el->el_history.eventno && hp; h++) {
803 #ifdef SDEBUG
804 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
805 #endif
806 if ((Strncmp(hp, el->el_line.buffer, (size_t)
807 (el->el_line.lastchar - el->el_line.buffer)) ||
808 hp[el->el_line.lastchar - el->el_line.buffer]) &&
809 c_hmatch(el, hp))
810 found = h;
811 hp = HIST_NEXT(el);
812 }
813
814 if (!found) { /* is it the current history number? */
815 if (!c_hmatch(el, el->el_history.buf)) {
816 #ifdef SDEBUG
817 (void) fprintf(el->el_errfile, "not found\n");
818 #endif
819 return CC_ERROR;
820 }
821 }
822 el->el_history.eventno = found;
823
824 return hist_get(el);
825 }
826
827
828 /* ed_prev_line():
829 * Move up one line
830 * Could be [k] [^p]
831 */
832 protected el_action_t
833 /*ARGSUSED*/
ed_prev_line(EditLine * el,wint_t c)834 ed_prev_line(EditLine *el, wint_t c __attribute__((__unused__)))
835 {
836 Char *ptr;
837 int nchars = c_hpos(el);
838
839 /*
840 * Move to the line requested
841 */
842 if (*(ptr = el->el_line.cursor) == '\n')
843 ptr--;
844
845 for (; ptr >= el->el_line.buffer; ptr--)
846 if (*ptr == '\n' && --el->el_state.argument <= 0)
847 break;
848
849 if (el->el_state.argument > 0)
850 return CC_ERROR;
851
852 /*
853 * Move to the beginning of the line
854 */
855 for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
856 continue;
857
858 /*
859 * Move to the character requested
860 */
861 for (ptr++;
862 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
863 ptr++)
864 continue;
865
866 el->el_line.cursor = ptr;
867 return CC_CURSOR;
868 }
869
870
871 /* ed_next_line():
872 * Move down one line
873 * Could be [j] [^n]
874 */
875 protected el_action_t
876 /*ARGSUSED*/
ed_next_line(EditLine * el,wint_t c)877 ed_next_line(EditLine *el, wint_t c __attribute__((__unused__)))
878 {
879 Char *ptr;
880 int nchars = c_hpos(el);
881
882 /*
883 * Move to the line requested
884 */
885 for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
886 if (*ptr == '\n' && --el->el_state.argument <= 0)
887 break;
888
889 if (el->el_state.argument > 0)
890 return CC_ERROR;
891
892 /*
893 * Move to the character requested
894 */
895 for (ptr++;
896 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
897 ptr++)
898 continue;
899
900 el->el_line.cursor = ptr;
901 return CC_CURSOR;
902 }
903
904
905 /* ed_command():
906 * Editline extended command
907 * [M-X] [:]
908 */
909 protected el_action_t
910 /*ARGSUSED*/
ed_command(EditLine * el,wint_t c)911 ed_command(EditLine *el, wint_t c __attribute__((__unused__)))
912 {
913 Char tmpbuf[EL_BUFSIZ];
914 int tmplen;
915
916 tmplen = c_gets(el, tmpbuf, STR("\n: "));
917 terminal__putc(el, '\n');
918
919 if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
920 terminal_beep(el);
921
922 el->el_map.current = el->el_map.key;
923 re_clear_display(el);
924 return CC_REFRESH;
925 }
926