1 /* $NetBSD: common.c,v 1.29 2012/03/24 20:08:43 christos Exp $ */
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
8 * Christos Zoulas of Cornell University.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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
36 #if !defined(lint) && !defined(SCCSID)
38 static char sccsid[] = "@(#)common.c 8.1 (Berkeley) 6/4/93";
40 __RCSID("$NetBSD: common.c,v 1.29 2012/03/24 20:08:43 christos Exp $");
42 #endif /* not lint && not SCCSID */
45 * common.c: Common Editor functions
50 * Indicate end of file
55 ed_end_of_file(EditLine *el, Int c __attribute__((__unused__)))
59 *el->el_line.lastchar = '\0';
65 * Add character to the line
66 * Insert a character [bound to all insert keys]
69 ed_insert(EditLine *el, Int c)
71 int count = el->el_state.argument;
76 if (el->el_line.lastchar + el->el_state.argument >=
78 /* end of buffer space, try to allocate more */
79 if (!ch_enlargebufs(el, (size_t) count))
80 return CC_ERROR; /* error allocating more */
84 if (el->el_state.inputmode == MODE_INSERT
85 || el->el_line.cursor >= el->el_line.lastchar)
88 *el->el_line.cursor++ = c;
89 re_fastaddc(el); /* fast refresh for one char. */
91 if (el->el_state.inputmode != MODE_REPLACE_1)
92 c_insert(el, el->el_state.argument);
94 while (count-- && el->el_line.cursor < el->el_line.lastchar)
95 *el->el_line.cursor++ = c;
99 if (el->el_state.inputmode == MODE_REPLACE_1)
100 return vi_command_mode(el, 0);
106 /* ed_delete_prev_word():
107 * Delete from beginning of current word to cursor
110 protected el_action_t
112 ed_delete_prev_word(EditLine *el, Int c __attribute__((__unused__)))
116 if (el->el_line.cursor == el->el_line.buffer)
119 cp = c__prev_word(el->el_line.cursor, el->el_line.buffer,
120 el->el_state.argument, ce__isword);
122 for (p = cp, kp = el->el_chared.c_kill.buf; p < el->el_line.cursor; p++)
124 el->el_chared.c_kill.last = kp;
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 */
134 /* ed_delete_next_char():
135 * Delete character under cursor
138 protected el_action_t
140 ed_delete_next_char(EditLine *el, Int c __attribute__((__unused__)))
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);
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 */
158 terminal_writec(el, c);
163 el->el_line.cursor--;
171 c_delafter(el, el->el_state.argument); /* delete after dot */
172 if (el->el_map.type == MAP_VI &&
173 el->el_line.cursor >= el->el_line.lastchar &&
174 el->el_line.cursor > el->el_line.buffer)
176 el->el_line.cursor = el->el_line.lastchar - 1;
182 * Cut to the end of line
185 protected el_action_t
187 ed_kill_line(EditLine *el, Int c __attribute__((__unused__)))
191 cp = el->el_line.cursor;
192 kp = el->el_chared.c_kill.buf;
193 while (cp < el->el_line.lastchar)
194 *kp++ = *cp++; /* copy it */
195 el->el_chared.c_kill.last = kp;
196 /* zap! -- delete to end */
197 el->el_line.lastchar = el->el_line.cursor;
203 * Move cursor to the end of line
206 protected el_action_t
208 ed_move_to_end(EditLine *el, Int c __attribute__((__unused__)))
211 el->el_line.cursor = el->el_line.lastchar;
212 if (el->el_map.type == MAP_VI) {
213 if (el->el_chared.c_vcmd.action != NOP) {
218 el->el_line.cursor--;
226 * Move cursor to the beginning of line
229 protected el_action_t
231 ed_move_to_beg(EditLine *el, Int c __attribute__((__unused__)))
234 el->el_line.cursor = el->el_line.buffer;
236 if (el->el_map.type == MAP_VI) {
237 /* We want FIRST non space character */
238 while (Isspace(*el->el_line.cursor))
239 el->el_line.cursor++;
240 if (el->el_chared.c_vcmd.action != NOP) {
249 /* ed_transpose_chars():
250 * Exchange the character to the left of the cursor with the one under it
253 protected el_action_t
254 ed_transpose_chars(EditLine *el, Int c)
257 if (el->el_line.cursor < el->el_line.lastchar) {
258 if (el->el_line.lastchar <= &el->el_line.buffer[1])
261 el->el_line.cursor++;
263 if (el->el_line.cursor > &el->el_line.buffer[1]) {
264 /* must have at least two chars entered */
265 c = el->el_line.cursor[-2];
266 el->el_line.cursor[-2] = el->el_line.cursor[-1];
267 el->el_line.cursor[-1] = c;
275 * Move to the right one character
278 protected el_action_t
280 ed_next_char(EditLine *el, Int c __attribute__((__unused__)))
282 Char *lim = el->el_line.lastchar;
284 if (el->el_line.cursor >= lim ||
285 (el->el_line.cursor == lim - 1 &&
286 el->el_map.type == MAP_VI &&
287 el->el_chared.c_vcmd.action == NOP))
290 el->el_line.cursor += el->el_state.argument;
291 if (el->el_line.cursor > lim)
292 el->el_line.cursor = lim;
294 if (el->el_map.type == MAP_VI)
295 if (el->el_chared.c_vcmd.action != NOP) {
304 * Move to the beginning of the current word
307 protected el_action_t
309 ed_prev_word(EditLine *el, Int c __attribute__((__unused__)))
312 if (el->el_line.cursor == el->el_line.buffer)
315 el->el_line.cursor = c__prev_word(el->el_line.cursor,
317 el->el_state.argument,
320 if (el->el_map.type == MAP_VI)
321 if (el->el_chared.c_vcmd.action != NOP) {
330 * Move to the left one character
333 protected el_action_t
335 ed_prev_char(EditLine *el, Int c __attribute__((__unused__)))
338 if (el->el_line.cursor > el->el_line.buffer) {
339 el->el_line.cursor -= el->el_state.argument;
340 if (el->el_line.cursor < el->el_line.buffer)
341 el->el_line.cursor = el->el_line.buffer;
343 if (el->el_map.type == MAP_VI)
344 if (el->el_chared.c_vcmd.action != NOP) {
354 /* ed_quoted_insert():
355 * Add the next character typed verbatim
358 protected el_action_t
359 ed_quoted_insert(EditLine *el, Int c)
365 num = FUN(el,getc)(el, &tc);
369 return ed_insert(el, c);
371 return ed_end_of_file(el, 0);
376 * Adds to argument or enters a digit
378 protected el_action_t
379 ed_digit(EditLine *el, Int c)
385 if (el->el_state.doingarg) {
386 /* if doing an arg, add this in... */
387 if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
388 el->el_state.argument = c - '0';
390 if (el->el_state.argument > 1000000)
392 el->el_state.argument =
393 (el->el_state.argument * 10) + (c - '0');
398 return ed_insert(el, c);
402 /* ed_argument_digit():
403 * Digit that starts argument
406 protected el_action_t
407 ed_argument_digit(EditLine *el, Int c)
413 if (el->el_state.doingarg) {
414 if (el->el_state.argument > 1000000)
416 el->el_state.argument = (el->el_state.argument * 10) +
418 } else { /* else starting an argument */
419 el->el_state.argument = c - '0';
420 el->el_state.doingarg = 1;
427 * Indicates unbound character
428 * Bound to keys that are not assigned
430 protected el_action_t
432 ed_unassigned(EditLine *el __attribute__((__unused__)),
433 Int c __attribute__((__unused__)))
445 * Tty interrupt character
448 protected el_action_t
450 ed_tty_sigint(EditLine *el __attribute__((__unused__)),
451 Int c __attribute__((__unused__)))
459 * Tty delayed suspend character
462 protected el_action_t
464 ed_tty_dsusp(EditLine *el __attribute__((__unused__)),
465 Int c __attribute__((__unused__)))
472 /* ed_tty_flush_output():
473 * Tty flush output characters
476 protected el_action_t
478 ed_tty_flush_output(EditLine *el __attribute__((__unused__)),
479 Int c __attribute__((__unused__)))
490 protected el_action_t
492 ed_tty_sigquit(EditLine *el __attribute__((__unused__)),
493 Int c __attribute__((__unused__)))
501 * Tty suspend character
504 protected el_action_t
506 ed_tty_sigtstp(EditLine *el __attribute__((__unused__)),
507 Int c __attribute__((__unused__)))
514 /* ed_tty_stop_output():
515 * Tty disallow output characters
518 protected el_action_t
520 ed_tty_stop_output(EditLine *el __attribute__((__unused__)),
521 Int c __attribute__((__unused__)))
528 /* ed_tty_start_output():
529 * Tty allow output characters
532 protected el_action_t
534 ed_tty_start_output(EditLine *el __attribute__((__unused__)),
535 Int c __attribute__((__unused__)))
546 protected el_action_t
548 ed_newline(EditLine *el, Int c __attribute__((__unused__)))
552 *el->el_line.lastchar++ = '\n';
553 *el->el_line.lastchar = '\0';
558 /* ed_delete_prev_char():
559 * Delete the character to the left of the cursor
562 protected el_action_t
564 ed_delete_prev_char(EditLine *el, Int c __attribute__((__unused__)))
567 if (el->el_line.cursor <= el->el_line.buffer)
570 c_delbefore(el, el->el_state.argument);
571 el->el_line.cursor -= el->el_state.argument;
572 if (el->el_line.cursor < el->el_line.buffer)
573 el->el_line.cursor = el->el_line.buffer;
578 /* ed_clear_screen():
579 * Clear screen leaving current line at the top
582 protected el_action_t
584 ed_clear_screen(EditLine *el, Int c __attribute__((__unused__)))
587 terminal_clear_screen(el); /* clear the whole real screen */
588 re_clear_display(el); /* reset everything */
594 * Redisplay everything
597 protected el_action_t
599 ed_redisplay(EditLine *el __attribute__((__unused__)),
600 Int c __attribute__((__unused__)))
608 * Erase current line and start from scratch
611 protected el_action_t
613 ed_start_over(EditLine *el, Int c __attribute__((__unused__)))
621 /* ed_sequence_lead_in():
622 * First character in a bound sequence
623 * Placeholder for external keys
625 protected el_action_t
627 ed_sequence_lead_in(EditLine *el __attribute__((__unused__)),
628 Int c __attribute__((__unused__)))
635 /* ed_prev_history():
636 * Move to the previous history line
639 protected el_action_t
641 ed_prev_history(EditLine *el, Int c __attribute__((__unused__)))
644 int sv_event = el->el_history.eventno;
646 el->el_chared.c_undo.len = -1;
647 *el->el_line.lastchar = '\0'; /* just in case */
649 if (el->el_history.eventno == 0) { /* save the current buffer
651 (void) Strncpy(el->el_history.buf, el->el_line.buffer,
653 el->el_history.last = el->el_history.buf +
654 (el->el_line.lastchar - el->el_line.buffer);
656 el->el_history.eventno += el->el_state.argument;
658 if (hist_get(el) == CC_ERROR) {
659 if (el->el_map.type == MAP_VI) {
660 el->el_history.eventno = sv_event;
664 /* el->el_history.eventno was fixed by first call */
668 return CC_REFRESH_BEEP;
673 /* ed_next_history():
674 * Move to the next history line
677 protected el_action_t
679 ed_next_history(EditLine *el, Int c __attribute__((__unused__)))
681 el_action_t beep = CC_REFRESH, rval;
683 el->el_chared.c_undo.len = -1;
684 *el->el_line.lastchar = '\0'; /* just in case */
686 el->el_history.eventno -= el->el_state.argument;
688 if (el->el_history.eventno < 0) {
689 el->el_history.eventno = 0;
690 beep = CC_REFRESH_BEEP;
693 if (rval == CC_REFRESH)
700 /* ed_search_prev_history():
701 * Search previous in history for a line matching the current
702 * next search history [M-P] [K]
704 protected el_action_t
706 ed_search_prev_history(EditLine *el, Int c __attribute__((__unused__)))
712 el->el_chared.c_vcmd.action = NOP;
713 el->el_chared.c_undo.len = -1;
714 *el->el_line.lastchar = '\0'; /* just in case */
715 if (el->el_history.eventno < 0) {
717 (void) fprintf(el->el_errfile,
718 "e_prev_search_hist(): eventno < 0;\n");
720 el->el_history.eventno = 0;
723 if (el->el_history.eventno == 0) {
724 (void) Strncpy(el->el_history.buf, el->el_line.buffer,
726 el->el_history.last = el->el_history.buf +
727 (el->el_line.lastchar - el->el_line.buffer);
729 if (el->el_history.ref == NULL)
736 c_setpat(el); /* Set search pattern !! */
738 for (h = 1; h <= el->el_history.eventno; h++)
743 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
745 if ((Strncmp(hp, el->el_line.buffer, (size_t)
746 (el->el_line.lastchar - el->el_line.buffer)) ||
747 hp[el->el_line.lastchar - el->el_line.buffer]) &&
758 (void) fprintf(el->el_errfile, "not found\n");
762 el->el_history.eventno = h;
768 /* ed_search_next_history():
769 * Search next in history for a line matching the current
772 protected el_action_t
774 ed_search_next_history(EditLine *el, Int c __attribute__((__unused__)))
780 el->el_chared.c_vcmd.action = NOP;
781 el->el_chared.c_undo.len = -1;
782 *el->el_line.lastchar = '\0'; /* just in case */
784 if (el->el_history.eventno == 0)
787 if (el->el_history.ref == NULL)
794 c_setpat(el); /* Set search pattern !! */
796 for (h = 1; h < el->el_history.eventno && hp; h++) {
798 (void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
800 if ((Strncmp(hp, el->el_line.buffer, (size_t)
801 (el->el_line.lastchar - el->el_line.buffer)) ||
802 hp[el->el_line.lastchar - el->el_line.buffer]) &&
808 if (!found) { /* is it the current history number? */
809 if (!c_hmatch(el, el->el_history.buf)) {
811 (void) fprintf(el->el_errfile, "not found\n");
816 el->el_history.eventno = found;
826 protected el_action_t
828 ed_prev_line(EditLine *el, Int c __attribute__((__unused__)))
831 int nchars = c_hpos(el);
834 * Move to the line requested
836 if (*(ptr = el->el_line.cursor) == '\n')
839 for (; ptr >= el->el_line.buffer; ptr--)
840 if (*ptr == '\n' && --el->el_state.argument <= 0)
843 if (el->el_state.argument > 0)
847 * Move to the beginning of the line
849 for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
853 * Move to the character requested
856 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
860 el->el_line.cursor = ptr;
869 protected el_action_t
871 ed_next_line(EditLine *el, Int c __attribute__((__unused__)))
874 int nchars = c_hpos(el);
877 * Move to the line requested
879 for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
880 if (*ptr == '\n' && --el->el_state.argument <= 0)
883 if (el->el_state.argument > 0)
887 * Move to the character requested
890 nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
894 el->el_line.cursor = ptr;
900 * Editline extended command
903 protected el_action_t
905 ed_command(EditLine *el, Int c __attribute__((__unused__)))
907 Char tmpbuf[EL_BUFSIZ];
910 tmplen = c_gets(el, tmpbuf, STR("\n: "));
911 terminal__putc(el, '\n');
913 if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
916 el->el_map.current = el->el_map.key;
917 re_clear_display(el);