2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Christos Zoulas of Cornell University.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
32 * @(#)vi.c 8.1 (Berkeley) 6/4/93
33 * $NetBSD: vi.c,v 1.27 2006/10/22 07:48:13 mrg Exp $$
34 * $DragonFly: src/lib/libedit/vi.c,v 1.7 2007/05/05 00:27:40 pavalos Exp $
43 * vi.c: Vi mode commands.
47 private el_action_t cv_action(EditLine *, int);
48 private el_action_t cv_paste(EditLine *, int);
54 cv_action(EditLine *el, int c)
57 if (el->el_chared.c_vcmd.action != NOP) {
58 /* 'cc', 'dd' and (possibly) friends */
59 if (c != el->el_chared.c_vcmd.action)
64 cv_yank(el, el->el_line.buffer,
65 el->el_line.lastchar - el->el_line.buffer);
66 el->el_chared.c_vcmd.action = NOP;
67 el->el_chared.c_vcmd.pos = 0;
69 el->el_line.lastchar = el->el_line.buffer;
70 el->el_line.cursor = el->el_line.buffer;
73 el->el_map.current = el->el_map.key;
77 el->el_chared.c_vcmd.pos = el->el_line.cursor;
78 el->el_chared.c_vcmd.action = c;
83 * Paste previous deletion before or after the cursor
86 cv_paste(EditLine *el, int c)
88 c_kill_t *k = &el->el_chared.c_kill;
89 int len = k->last - k->buf;
91 if (k->buf == NULL || len == 0)
94 (void) fprintf(el->el_errfile, "Paste: \"%.*s\"\n", len, k->buf);
99 if (!c && el->el_line.cursor < el->el_line.lastchar)
100 el->el_line.cursor++;
103 if (el->el_line.cursor + len > el->el_line.lastchar)
105 (void) memcpy(el->el_line.cursor, k->buf, len +0u);
112 * Vi paste previous deletion to the right of the cursor
115 protected el_action_t
117 vi_paste_next(EditLine *el, int c __attribute__((__unused__)))
120 return (cv_paste(el, 0));
125 * Vi paste previous deletion to the left of the cursor
128 protected el_action_t
130 vi_paste_prev(EditLine *el, int c __attribute__((__unused__)))
133 return (cv_paste(el, 1));
137 /* vi_prev_big_word():
138 * Vi move to the previous space delimited word
141 protected el_action_t
143 vi_prev_big_word(EditLine *el, int c)
146 if (el->el_line.cursor == el->el_line.buffer)
149 el->el_line.cursor = cv_prev_word(el->el_line.cursor,
151 el->el_state.argument,
154 if (el->el_chared.c_vcmd.action != NOP) {
163 * Vi move to the previous word
166 protected el_action_t
168 vi_prev_word(EditLine *el, int c __attribute__((__unused__)))
171 if (el->el_line.cursor == el->el_line.buffer)
174 el->el_line.cursor = cv_prev_word(el->el_line.cursor,
176 el->el_state.argument,
179 if (el->el_chared.c_vcmd.action != NOP) {
187 /* vi_next_big_word():
188 * Vi move to the next space delimited word
191 protected el_action_t
193 vi_next_big_word(EditLine *el, int c)
196 if (el->el_line.cursor >= el->el_line.lastchar - 1)
199 el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
200 el->el_line.lastchar, el->el_state.argument, cv__isWord);
202 if (el->el_map.type == MAP_VI)
203 if (el->el_chared.c_vcmd.action != NOP) {
212 * Vi move to the next word
215 protected el_action_t
217 vi_next_word(EditLine *el, int c __attribute__((__unused__)))
220 if (el->el_line.cursor >= el->el_line.lastchar - 1)
223 el->el_line.cursor = cv_next_word(el, el->el_line.cursor,
224 el->el_line.lastchar, el->el_state.argument, cv__isword);
226 if (el->el_map.type == MAP_VI)
227 if (el->el_chared.c_vcmd.action != NOP) {
236 * Vi change case of character under the cursor and advance one character
239 protected el_action_t
240 vi_change_case(EditLine *el, int c)
244 if (el->el_line.cursor >= el->el_line.lastchar)
247 for (i = 0; i < el->el_state.argument; i++) {
249 c = *(unsigned char *)el->el_line.cursor;
251 *el->el_line.cursor = tolower(c);
253 *el->el_line.cursor = toupper(c);
255 if (++el->el_line.cursor >= el->el_line.lastchar) {
256 el->el_line.cursor--;
267 * Vi change prefix command
270 protected el_action_t
272 vi_change_meta(EditLine *el, int c __attribute__((__unused__)))
276 * Delete with insert == change: first we delete and then we leave in
279 return (cv_action(el, DELETE | INSERT));
283 /* vi_insert_at_bol():
284 * Vi enter insert mode at the beginning of line
287 protected el_action_t
289 vi_insert_at_bol(EditLine *el, int c __attribute__((__unused__)))
292 el->el_line.cursor = el->el_line.buffer;
294 el->el_map.current = el->el_map.key;
299 /* vi_replace_char():
300 * Vi replace character under the cursor with the next character typed
303 protected el_action_t
305 vi_replace_char(EditLine *el, int c __attribute__((__unused__)))
308 if (el->el_line.cursor >= el->el_line.lastchar)
311 el->el_map.current = el->el_map.key;
312 el->el_state.inputmode = MODE_REPLACE_1;
318 /* vi_replace_mode():
319 * Vi enter replace mode
322 protected el_action_t
324 vi_replace_mode(EditLine *el, int c __attribute__((__unused__)))
327 el->el_map.current = el->el_map.key;
328 el->el_state.inputmode = MODE_REPLACE;
334 /* vi_substitute_char():
335 * Vi replace character under the cursor and enter insert mode
338 protected el_action_t
340 vi_substitute_char(EditLine *el, int c __attribute__((__unused__)))
343 c_delafter(el, el->el_state.argument);
344 el->el_map.current = el->el_map.key;
349 /* vi_substitute_line():
350 * Vi substitute entire line
353 protected el_action_t
355 vi_substitute_line(EditLine *el, int c __attribute__((__unused__)))
359 cv_yank(el, el->el_line.buffer,
360 el->el_line.lastchar - el->el_line.buffer);
361 (void) em_kill_line(el, 0);
362 el->el_map.current = el->el_map.key;
367 /* vi_change_to_eol():
368 * Vi change to end of line
371 protected el_action_t
373 vi_change_to_eol(EditLine *el, int c __attribute__((__unused__)))
377 cv_yank(el, el->el_line.cursor,
378 el->el_line.lastchar - el->el_line.cursor);
379 (void) ed_kill_line(el, 0);
380 el->el_map.current = el->el_map.key;
386 * Vi enter insert mode
389 protected el_action_t
391 vi_insert(EditLine *el, int c __attribute__((__unused__)))
394 el->el_map.current = el->el_map.key;
401 * Vi enter insert mode after the cursor
404 protected el_action_t
406 vi_add(EditLine *el, int c __attribute__((__unused__)))
410 el->el_map.current = el->el_map.key;
411 if (el->el_line.cursor < el->el_line.lastchar) {
412 el->el_line.cursor++;
413 if (el->el_line.cursor > el->el_line.lastchar)
414 el->el_line.cursor = el->el_line.lastchar;
426 * Vi enter insert mode at end of line
429 protected el_action_t
431 vi_add_at_eol(EditLine *el, int c __attribute__((__unused__)))
434 el->el_map.current = el->el_map.key;
435 el->el_line.cursor = el->el_line.lastchar;
442 * Vi delete prefix command
445 protected el_action_t
447 vi_delete_meta(EditLine *el, int c __attribute__((__unused__)))
450 return (cv_action(el, DELETE));
454 /* vi_end_big_word():
455 * Vi move to the end of the current space delimited word
458 protected el_action_t
460 vi_end_big_word(EditLine *el, int c)
463 if (el->el_line.cursor == el->el_line.lastchar)
466 el->el_line.cursor = cv__endword(el->el_line.cursor,
467 el->el_line.lastchar, el->el_state.argument, cv__isWord);
469 if (el->el_chared.c_vcmd.action != NOP) {
470 el->el_line.cursor++;
479 * Vi move to the end of the current word
482 protected el_action_t
484 vi_end_word(EditLine *el, int c __attribute__((__unused__)))
487 if (el->el_line.cursor == el->el_line.lastchar)
490 el->el_line.cursor = cv__endword(el->el_line.cursor,
491 el->el_line.lastchar, el->el_state.argument, cv__isword);
493 if (el->el_chared.c_vcmd.action != NOP) {
494 el->el_line.cursor++;
503 * Vi undo last change
506 protected el_action_t
508 vi_undo(EditLine *el, int c __attribute__((__unused__)))
510 c_undo_t un = el->el_chared.c_undo;
515 /* switch line buffer and undo buffer */
516 el->el_chared.c_undo.buf = el->el_line.buffer;
517 el->el_chared.c_undo.len = el->el_line.lastchar - el->el_line.buffer;
518 el->el_chared.c_undo.cursor = el->el_line.cursor - el->el_line.buffer;
519 el->el_line.limit = un.buf + (el->el_line.limit - el->el_line.buffer);
520 el->el_line.buffer = un.buf;
521 el->el_line.cursor = un.buf + un.cursor;
522 el->el_line.lastchar = un.buf + un.len;
528 /* vi_command_mode():
529 * Vi enter command mode (use alternative key bindings)
532 protected el_action_t
534 vi_command_mode(EditLine *el, int c __attribute__((__unused__)))
537 /* [Esc] cancels pending action */
538 el->el_chared.c_vcmd.action = NOP;
539 el->el_chared.c_vcmd.pos = 0;
541 el->el_state.doingarg = 0;
543 el->el_state.inputmode = MODE_INSERT;
544 el->el_map.current = el->el_map.alt;
546 if (el->el_line.cursor > el->el_line.buffer)
547 el->el_line.cursor--;
554 * Vi move to the beginning of line
557 protected el_action_t
558 vi_zero(EditLine *el, int c)
561 if (el->el_state.doingarg)
562 return ed_argument_digit(el, c);
564 el->el_line.cursor = el->el_line.buffer;
565 if (el->el_chared.c_vcmd.action != NOP) {
573 /* vi_delete_prev_char():
574 * Vi move to previous character (backspace)
575 * [^H] in insert mode only
577 protected el_action_t
579 vi_delete_prev_char(EditLine *el, int c __attribute__((__unused__)))
582 if (el->el_line.cursor <= el->el_line.buffer)
586 el->el_line.cursor--;
592 * Vi list choices for completion or indicate end of file if empty line
595 protected el_action_t
597 vi_list_or_eof(EditLine *el, int c)
600 if (el->el_line.cursor == el->el_line.lastchar) {
601 if (el->el_line.cursor == el->el_line.buffer) {
602 term_writec(el, c); /* then do a EOF */
606 * Here we could list completions, but it is an
615 *el->el_line.lastchar = '\0'; /* just in case */
616 return (CC_LIST_CHOICES);
619 * Just complain for now.
628 /* vi_kill_line_prev():
629 * Vi cut from beginning of line to cursor
632 protected el_action_t
634 vi_kill_line_prev(EditLine *el, int c __attribute__((__unused__)))
638 cp = el->el_line.buffer;
639 kp = el->el_chared.c_kill.buf;
640 while (cp < el->el_line.cursor)
641 *kp++ = *cp++; /* copy it */
642 el->el_chared.c_kill.last = kp;
643 c_delbefore(el, el->el_line.cursor - el->el_line.buffer);
644 el->el_line.cursor = el->el_line.buffer; /* zap! */
650 * Vi search history previous
653 protected el_action_t
655 vi_search_prev(EditLine *el, int c __attribute__((__unused__)))
658 return (cv_search(el, ED_SEARCH_PREV_HISTORY));
663 * Vi search history next
666 protected el_action_t
668 vi_search_next(EditLine *el, int c __attribute__((__unused__)))
671 return (cv_search(el, ED_SEARCH_NEXT_HISTORY));
675 /* vi_repeat_search_next():
676 * Vi repeat current search in the same search direction
679 protected el_action_t
681 vi_repeat_search_next(EditLine *el, int c __attribute__((__unused__)))
684 if (el->el_search.patlen == 0)
687 return (cv_repeat_srch(el, el->el_search.patdir));
691 /* vi_repeat_search_prev():
692 * Vi repeat current search in the opposite search direction
696 protected el_action_t
697 vi_repeat_search_prev(EditLine *el, int c __attribute__((__unused__)))
700 if (el->el_search.patlen == 0)
703 return (cv_repeat_srch(el,
704 el->el_search.patdir == ED_SEARCH_PREV_HISTORY ?
705 ED_SEARCH_NEXT_HISTORY : ED_SEARCH_PREV_HISTORY));
710 * Vi move to the character specified next
713 protected el_action_t
715 vi_next_char(EditLine *el, int c __attribute__((__unused__)))
717 return cv_csearch(el, CHAR_FWD, -1, el->el_state.argument, 0);
722 * Vi move to the character specified previous
725 protected el_action_t
727 vi_prev_char(EditLine *el, int c __attribute__((__unused__)))
729 return cv_csearch(el, CHAR_BACK, -1, el->el_state.argument, 0);
733 /* vi_to_next_char():
734 * Vi move up to the character specified next
737 protected el_action_t
739 vi_to_next_char(EditLine *el, int c __attribute__((__unused__)))
741 return cv_csearch(el, CHAR_FWD, -1, el->el_state.argument, 1);
745 /* vi_to_prev_char():
746 * Vi move up to the character specified previous
749 protected el_action_t
751 vi_to_prev_char(EditLine *el, int c __attribute__((__unused__)))
753 return cv_csearch(el, CHAR_BACK, -1, el->el_state.argument, 1);
757 /* vi_repeat_next_char():
758 * Vi repeat current character search in the same search direction
761 protected el_action_t
763 vi_repeat_next_char(EditLine *el, int c __attribute__((__unused__)))
766 return cv_csearch(el, el->el_search.chadir, el->el_search.chacha,
767 el->el_state.argument, el->el_search.chatflg);
771 /* vi_repeat_prev_char():
772 * Vi repeat current character search in the opposite search direction
775 protected el_action_t
777 vi_repeat_prev_char(EditLine *el, int c __attribute__((__unused__)))
780 int dir = el->el_search.chadir;
782 r = cv_csearch(el, -dir, el->el_search.chacha,
783 el->el_state.argument, el->el_search.chatflg);
784 el->el_search.chadir = dir;
790 * Vi go to matching () {} or []
793 protected el_action_t
795 vi_match(EditLine *el, int c)
797 const char match_chars[] = "()[]{}";
802 *el->el_line.lastchar = '\0'; /* just in case */
804 i = strcspn(el->el_line.cursor, match_chars);
805 o_ch = el->el_line.cursor[i];
808 delta = strchr(match_chars, o_ch) - match_chars;
809 c_ch = match_chars[delta ^ 1];
811 delta = 1 - (delta & 1) * 2;
813 for (cp = &el->el_line.cursor[i]; count; ) {
815 if (cp < el->el_line.buffer || cp >= el->el_line.lastchar)
819 else if (*cp == c_ch)
823 el->el_line.cursor = cp;
825 if (el->el_chared.c_vcmd.action != NOP) {
826 /* NB posix says char under cursor should NOT be deleted
827 for -ve delta - this is different to netbsd vi. */
829 el->el_line.cursor++;
837 * Vi undo all changes to line
840 protected el_action_t
842 vi_undo_line(EditLine *el, int c)
850 * Vi go to specified column
852 * NB netbsd vi goes to screen column 'n', posix says nth character
854 protected el_action_t
856 vi_to_column(EditLine *el, int c)
859 el->el_line.cursor = el->el_line.buffer;
860 el->el_state.argument--;
861 return ed_next_char(el, 0);
865 * Vi yank to end of line
868 protected el_action_t
870 vi_yank_end(EditLine *el, int c)
873 cv_yank(el, el->el_line.cursor,
874 el->el_line.lastchar - el->el_line.cursor);
882 protected el_action_t
884 vi_yank(EditLine *el, int c)
887 return cv_action(el, YANK);
891 * Vi comment out current command
894 protected el_action_t
896 vi_comment_out(EditLine *el, int c)
899 el->el_line.cursor = el->el_line.buffer;
901 *el->el_line.cursor = '#';
903 return ed_newline(el, 0);
907 * Vi include shell alias
909 * NB: posix implies that we should enter insert mode, however
910 * this is against historical precedent...
913 extern char *get_alias_text(const char *) __weak_extern(get_alias_text);
915 protected el_action_t
917 vi_alias(EditLine *el, int c)
923 if (get_alias_text == 0) {
929 if (el_getc(el, &alias_name[1]) != 1)
932 alias_text = get_alias_text(alias_name);
933 if (alias_text != NULL)
934 el_push(el, alias_text);
941 /* vi_to_history_line():
942 * Vi go to specified history file line.
945 protected el_action_t
947 vi_to_history_line(EditLine *el, int c)
949 int sv_event_no = el->el_history.eventno;
953 if (el->el_history.eventno == 0) {
954 (void) strncpy(el->el_history.buf, el->el_line.buffer,
956 el->el_history.last = el->el_history.buf +
957 (el->el_line.lastchar - el->el_line.buffer);
960 /* Lack of a 'count' means oldest, not 1 */
961 if (!el->el_state.doingarg) {
962 el->el_history.eventno = 0x7fffffff;
965 /* This is brain dead, all the rest of this code counts
966 * upwards going into the past. Here we need count in the
967 * other direction (to match the output of fc -l).
968 * I could change the world, but this seems to suffice.
970 el->el_history.eventno = 1;
971 if (hist_get(el) == CC_ERROR)
973 el->el_history.eventno = 1 + el->el_history.ev.num
974 - el->el_state.argument;
975 if (el->el_history.eventno < 0) {
976 el->el_history.eventno = sv_event_no;
981 if (rval == CC_ERROR)
982 el->el_history.eventno = sv_event_no;
987 * Vi edit history line with vi
990 protected el_action_t
992 vi_histedit(EditLine *el, int c)
997 char tempfile[] = "/tmp/histedit.XXXXXXXXXX";
1000 if (el->el_state.doingarg) {
1001 if (vi_to_history_line(el, 0) == CC_ERROR)
1005 fd = mkstemp(tempfile);
1008 cp = el->el_line.buffer;
1009 write(fd, cp, el->el_line.lastchar - cp +0u);
1019 execlp("vi", "vi", tempfile, NULL);
1023 while (waitpid(pid, &st, 0) != pid)
1025 lseek(fd, 0ll, SEEK_SET);
1026 st = read(fd, cp, el->el_line.limit - cp +0u);
1027 if (st > 0 && cp[st - 1] == '\n')
1029 el->el_line.cursor = cp;
1030 el->el_line.lastchar = cp + st;
1036 /* return CC_REFRESH; */
1037 return ed_newline(el, 0);
1040 /* vi_history_word():
1041 * Vi append word from previous input line
1043 * Who knows where this one came from!
1044 * '_' in vi means 'entire current line', so 'cc' is a synonym for 'c_'
1046 protected el_action_t
1048 vi_history_word(EditLine *el, int c)
1050 const char *wp = HIST_FIRST(el);
1051 const char *wep, *wsp;
1061 while (isspace((unsigned char)*wp))
1066 while (*wp && !isspace((unsigned char)*wp))
1069 } while ((!el->el_state.doingarg || --el->el_state.argument > 0) && *wp != 0);
1071 if (wsp == 0 || (el->el_state.doingarg && el->el_state.argument != 0))
1076 if (el->el_line.cursor < el->el_line.lastchar)
1077 el->el_line.cursor++;
1078 c_insert(el, len + 1);
1079 cp = el->el_line.cursor;
1080 lim = el->el_line.limit;
1083 while (wsp < wep && cp < lim)
1085 el->el_line.cursor = cp;
1087 el->el_map.current = el->el_map.key;
1092 * Vi redo last non-motion command
1095 protected el_action_t
1097 vi_redo(EditLine *el, int c)
1099 c_redo_t *r = &el->el_chared.c_redo;
1101 if (!el->el_state.doingarg && r->count) {
1102 el->el_state.doingarg = 1;
1103 el->el_state.argument = r->count;
1106 el->el_chared.c_vcmd.pos = el->el_line.cursor;
1107 el->el_chared.c_vcmd.action = r->action;
1108 if (r->pos != r->buf) {
1109 if (r->pos + 1 > r->lim)
1111 r->pos = r->lim - 1;
1113 el_push(el, r->buf);
1116 el->el_state.thiscmd = r->cmd;
1117 el->el_state.thisch = r->ch;
1118 return (*el->el_map.func[r->cmd])(el, r->ch);