2 * $Id: textbox.c,v 1.110 2012/12/01 01:48:08 tom Exp $
4 * textbox.c -- implements the text box
6 * Copyright 2000-2011,2012 Thomas E. Dickey
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU Lesser General Public License, version 2.1
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this program; if not, write to
19 * Free Software Foundation, Inc.
20 * 51 Franklin St., Fifth Floor
21 * Boston, MA 02110, USA.
23 * An earlier version of this program lists as authors:
24 * Savio Lam (lam836@cs.cuhk.hk)
30 #define PAGE_LENGTH (height - 4)
31 #define PAGE_WIDTH (width - 2)
38 char line[MAX_LEN + 1];
47 long page_length; /* lines on the page which is shown */
48 long in_buf; /* ending index into buf[] for page */
53 lseek_obj(MY_OBJ * obj, long offset, int mode)
56 if ((fpos = (long) lseek(obj->fd, (off_t) offset, mode)) == -1) {
60 dlg_exiterr("Cannot get file position");
63 dlg_exiterr("Cannot seek to end of file");
66 dlg_exiterr("Cannot set file position to %ld", offset);
74 ftell_obj(MY_OBJ * obj)
76 return lseek_obj(obj, 0L, SEEK_CUR);
80 lseek_set(MY_OBJ * obj, long offset)
82 long actual = lseek_obj(obj, offset, SEEK_SET);
84 if (actual != offset) {
85 dlg_exiterr("Cannot set file position to %ld (actual %ld)\n",
91 lseek_end(MY_OBJ * obj, long offset)
93 long actual = lseek_obj(obj, offset, SEEK_END);
95 if (actual > offset) {
96 obj->file_size = actual;
101 lseek_cur(MY_OBJ * obj, long offset)
103 long actual = lseek_obj(obj, offset, SEEK_CUR);
105 if (actual != offset) {
106 dlg_trace_msg("Lseek returned %ld, expected %ld\n", actual, offset);
113 char *result = dlg_malloc(char, size);
114 assert_ptr(result, "xalloc");
119 * read_high() substitutes read() for tab->spaces conversion
121 * buffer_len, fd_bytes_read, bytes_read are modified
124 * fd_bytes_read is the effective number of bytes read from file
125 * bytes_read is the length of buf, that can be different if tab_correct
128 read_high(MY_OBJ * obj, size_t size_read)
131 int i = 0, j, n, tmpint;
134 /* Allocate space for read buffer */
135 buftab = xalloc(size_read + 1);
137 if ((obj->fd_bytes_read = read(obj->fd, buftab, size_read)) != -1) {
139 buftab[obj->fd_bytes_read] = '\0'; /* mark end of valid data */
141 if (dialog_vars.tab_correct) {
143 /* calculate bytes_read by buftab and fd_bytes_read */
144 obj->bytes_read = begin_line = 0;
145 for (j = 0; j < obj->fd_bytes_read; j++)
146 if (buftab[j] == TAB)
147 obj->bytes_read += dialog_state.tab_len
148 - ((obj->bytes_read - begin_line)
149 % dialog_state.tab_len);
150 else if (buftab[j] == '\n') {
152 begin_line = obj->bytes_read;
156 if (obj->bytes_read > obj->buffer_len) {
157 if (obj->buffer_first)
158 obj->buffer_first = FALSE; /* disp = 0 */
163 obj->buffer_len = obj->bytes_read;
165 /* Allocate space for read buffer */
166 obj->buf = xalloc((size_t) obj->buffer_len + 1);
170 if (obj->buffer_first) {
171 obj->buffer_first = FALSE;
173 /* Allocate space for read buffer */
174 obj->buf = xalloc(size_read + 1);
177 obj->bytes_read = obj->fd_bytes_read;
182 while (j < obj->fd_bytes_read)
183 if (((ch = buftab[j++]) == TAB) && (dialog_vars.tab_correct != 0)) {
184 tmpint = (dialog_state.tab_len
185 - ((int) ((long) i - begin_line) % dialog_state.tab_len));
186 for (n = 0; n < tmpint; n++)
194 obj->buf[i] = '\0'; /* mark end of valid data */
197 if (obj->bytes_read == -1)
198 dlg_exiterr("Error reading file");
203 find_first(MY_OBJ * obj, char *buffer, long length)
205 long recount = obj->page_length;
209 if (buffer[length] == '\n') {
221 tabize(MY_OBJ * obj, long val, long *first_pos)
224 long i, count, begin_line;
227 if (!dialog_vars.tab_correct)
230 fpos = ftell_obj(obj);
232 lseek_set(obj, fpos - obj->fd_bytes_read);
234 /* Allocate space for read buffer */
235 buftab = xalloc((size_t) val + 1);
237 if ((read(obj->fd, buftab, (size_t) val)) == -1)
238 dlg_exiterr("Error reading file in tabize().");
240 begin_line = count = 0;
244 for (i = 0; i < val; i++) {
245 if ((first_pos != 0) && (count >= val)) {
246 *first_pos = find_first(obj, buftab, i);
249 if (buftab[i] == TAB)
250 count += dialog_state.tab_len
251 - ((count - begin_line) % dialog_state.tab_len);
252 else if (buftab[i] == '\n') {
259 lseek_set(obj, fpos);
264 * Return current line of text.
265 * 'page' should point to start of current line before calling, and will be
266 * updated to point to start of next line.
269 get_line(MY_OBJ * obj)
274 obj->end_reached = FALSE;
275 while (obj->buf[obj->in_buf] != '\n') {
276 if (obj->buf[obj->in_buf] == '\0') { /* Either end of file or end of buffer reached */
277 fpos = ftell_obj(obj);
279 if (fpos < obj->file_size) { /* Not end of file yet */
280 /* We've reached end of buffer, but not end of file yet, so
281 * read next part of file into buffer
283 read_high(obj, BUF_SIZE);
286 if (!obj->end_reached)
287 obj->end_reached = TRUE;
290 } else if (i < MAX_LEN)
291 obj->line[i++] = obj->buf[obj->in_buf++];
293 if (i == MAX_LEN) /* Truncate lines longer than MAX_LEN characters */
294 obj->line[i++] = '\0';
300 if (!obj->end_reached)
301 obj->in_buf++; /* move past '\n' */
307 match_string(MY_OBJ * obj, char *string)
309 char *match = get_line(obj);
310 return strstr(match, string) != 0;
314 * Go back 'n' lines in text file. Called by dialog_textbox().
315 * 'in_buf' will be updated to point to the desired line in 'buf'.
318 back_lines(MY_OBJ * obj, long n)
324 obj->begin_reached = FALSE;
325 /* We have to distinguish between end_reached and !end_reached since at end
326 * of file, the line is not ended by a '\n'. The code inside 'if'
327 * basically does a '--in_buf' to move one character backward so as to
328 * skip '\n' of the previous line */
329 if (!obj->end_reached) {
330 /* Either beginning of buffer or beginning of file reached? */
332 if (obj->in_buf == 0) {
333 fpos = ftell_obj(obj);
335 if (fpos > obj->fd_bytes_read) { /* Not beginning of file yet */
336 /* We've reached beginning of buffer, but not beginning of file
337 * yet, so read previous part of file into buffer. Note that
338 * we only move backward for BUF_SIZE/2 bytes, but not BUF_SIZE
339 * bytes to avoid re-reading again in print_page() later
341 /* Really possible to move backward BUF_SIZE/2 bytes? */
342 if (fpos < BUF_SIZE / 2 + obj->fd_bytes_read) {
343 /* No, move less than */
345 val_to_tabize = fpos - obj->fd_bytes_read;
346 } else { /* Move backward BUF_SIZE/2 bytes */
347 lseek_cur(obj, -(BUF_SIZE / 2 + obj->fd_bytes_read));
348 val_to_tabize = BUF_SIZE / 2;
350 read_high(obj, BUF_SIZE);
352 obj->in_buf = tabize(obj, val_to_tabize, (long *) 0);
354 } else { /* Beginning of file reached */
355 obj->begin_reached = TRUE;
360 if (obj->buf[obj->in_buf] != '\n')
361 /* Something's wrong... */
362 dlg_exiterr("Internal error in back_lines().");
365 /* Go back 'n' lines */
366 for (i = 0; i < n; i++) {
368 if (obj->in_buf == 0) {
369 fpos = ftell_obj(obj);
371 if (fpos > obj->fd_bytes_read) {
372 /* Really possible to move backward BUF_SIZE/2 bytes? */
373 if (fpos < BUF_SIZE / 2 + obj->fd_bytes_read) {
374 /* No, move less than */
376 val_to_tabize = fpos - obj->fd_bytes_read;
377 } else { /* Move backward BUF_SIZE/2 bytes */
378 lseek_cur(obj, -(BUF_SIZE / 2 + obj->fd_bytes_read));
379 val_to_tabize = BUF_SIZE / 2;
381 read_high(obj, BUF_SIZE);
383 obj->in_buf = tabize(obj, val_to_tabize, (long *) 0);
385 } else { /* Beginning of file reached */
386 obj->begin_reached = TRUE;
390 } while (obj->buf[--(obj->in_buf)] != '\n');
396 * Print a new line of text.
399 print_line(MY_OBJ * obj, int row, int width)
401 if (wmove(obj->text, row, 0) != ERR) {
403 char *line = get_line(obj);
404 const int *cols = dlg_index_columns(line);
405 const int *indx = dlg_index_wchars(line);
406 int limit = dlg_count_wchars(line);
410 if (width > getmaxx(obj->text))
411 width = getmaxx(obj->text);
412 --width; /* for the leading ' ' */
414 for (i = 0; i <= limit && cols[i] < obj->hscroll; ++i)
417 for (i = first; (i <= limit) && ((cols[i] - cols[first]) < width); ++i)
420 (void) waddch(obj->text, ' ');
421 (void) waddnstr(obj->text, line + indx[first], indx[last] - indx[first]);
423 getyx(obj->text, y, x);
424 if (y == row) { /* Clear 'residue' of previous line */
425 for (i = 0; i <= width - x; i++) {
426 (void) waddch(obj->text, ' ');
433 * Print a new page of text.
436 print_page(MY_OBJ * obj, int height, int width)
438 int i, passed_end = 0;
440 obj->page_length = 0;
441 for (i = 0; i < height; i++) {
442 print_line(obj, i, width);
445 if (obj->end_reached && !passed_end)
448 (void) wnoutrefresh(obj->text);
449 dlg_trace_win(obj->text);
453 * Print current position
456 print_position(MY_OBJ * obj, WINDOW *win, int height, int width)
462 fpos = ftell_obj(obj);
463 if (dialog_vars.tab_correct)
464 size = tabize(obj, obj->in_buf, &first);
466 first = find_first(obj, obj->buf, size = obj->in_buf);
468 dlg_draw_scrollbar(win,
470 fpos - obj->fd_bytes_read + size,
471 fpos - obj->fd_bytes_read + size,
480 * Display a dialog box and get the search term from user.
483 get_search_term(WINDOW *dialog, char *input, int height, int width)
486 static DLG_KEYS_BINDING binding[] = {
496 int box_height, box_width;
501 int result = DLG_EXIT_UNKNOWN;
502 const char *caption = _("Search");
503 int len_caption = dlg_count_columns(caption);
508 getbegyx(dialog, old_y, old_x);
510 box_height = 1 + (2 * MARGIN);
511 box_width = len_caption + (2 * (MARGIN + 2));
512 box_width = MAX(box_width, 30);
513 box_width = MIN(box_width, getmaxx(dialog) - 2 * MARGIN);
514 len_caption = MIN(len_caption, box_width - (2 * (MARGIN + 1)));
516 box_x = (width - box_width) / 2;
517 box_y = (height - box_height) / 2;
518 widget = dlg_new_modal_window(dialog,
519 box_height, box_width,
520 old_y + box_y, old_x + box_x);
521 keypad(widget, TRUE);
522 dlg_register_window(widget, "searchbox", binding);
524 dlg_draw_box2(widget, 0, 0, box_height, box_width,
526 searchbox_border_attr,
527 searchbox_border2_attr);
528 (void) wattrset(widget, searchbox_title_attr);
529 (void) wmove(widget, 0, (box_width - len_caption) / 2);
531 indx = dlg_index_wchars(caption);
532 limit = dlg_limit_columns(caption, len_caption, 0);
533 (void) waddnstr(widget, caption + indx[0], indx[limit] - indx[0]);
536 offset = dlg_count_columns(input);
538 while (result == DLG_EXIT_UNKNOWN) {
540 key = dlg_getc(widget, &fkey);
545 result = DLG_EXIT_CANCEL;
549 result = DLG_EXIT_OK;
552 } else if (key == ESC) {
553 result = DLG_EXIT_ESC;
555 } else if (key == ERR) {
560 if (dlg_edit_string(input, &offset, key, fkey, first)) {
561 dlg_show_string(widget, input, offset, searchbox_attr,
562 1, 1, box_width, FALSE, first);
566 dlg_del_window(widget);
571 perform_search(MY_OBJ * obj, int height, int width, int key, char *search_term)
581 /* set search direction */
582 dir = (key == '/' || key == 'n') ? 1 : 0;
583 if (dir ? !obj->end_reached : !obj->begin_reached) {
584 if (key == 'n' || key == 'N') {
585 if (search_term[0] == '\0') { /* No search term yet */
589 /* Get search term from user */
590 } else if ((result = get_search_term(obj->text, search_term,
592 PAGE_WIDTH)) != DLG_EXIT_OK
593 || search_term[0] == '\0') {
595 if (result == DLG_EXIT_CANCEL) {
601 /* ESC pressed, or no search term, reprint page to clear box */
602 (void) wattrset(obj->text, dialog_attr);
603 back_lines(obj, obj->page_length);
606 /* Save variables for restoring in case search term can't be found */
607 tempinx = obj->in_buf;
608 temp = obj->begin_reached;
609 temp1 = obj->end_reached;
610 fpos = ftell_obj(obj) - obj->fd_bytes_read;
611 /* update 'in_buf' to point to next (previous) line before
612 forward (backward) searching */
614 ? obj->page_length - 1
615 : obj->page_length + 1));
616 if (dir) { /* Forward search */
617 while ((found = match_string(obj, search_term)) == FALSE) {
618 if (obj->end_reached)
621 } else { /* Backward search */
622 while ((found = match_string(obj, search_term)) == FALSE) {
623 if (obj->begin_reached)
628 if (found == FALSE) { /* not found */
630 /* Restore program state to that before searching */
631 lseek_set(obj, fpos);
633 read_high(obj, BUF_SIZE);
635 obj->in_buf = tempinx;
636 obj->begin_reached = temp;
637 obj->end_reached = temp1;
638 /* move 'in_buf' to point to start of current page to
639 * re-print current page. Note that 'in_buf' always points
640 * to start of next page, so this is necessary
642 back_lines(obj, obj->page_length);
643 } else { /* Search term found */
647 (void) wattrset(obj->text, dialog_attr);
649 } else { /* no need to find */
656 * Display text from a file in a dialog box.
659 dialog_textbox(const char *title, const char *file, int height, int width)
662 static DLG_KEYS_BINDING binding[] = {
665 DLG_KEYS_DATA( DLGK_GRID_DOWN, 'J' ),
666 DLG_KEYS_DATA( DLGK_GRID_DOWN, 'j' ),
667 DLG_KEYS_DATA( DLGK_GRID_DOWN, KEY_DOWN ),
668 DLG_KEYS_DATA( DLGK_GRID_LEFT, 'H' ),
669 DLG_KEYS_DATA( DLGK_GRID_LEFT, 'h' ),
670 DLG_KEYS_DATA( DLGK_GRID_LEFT, KEY_LEFT ),
671 DLG_KEYS_DATA( DLGK_GRID_RIGHT, 'L' ),
672 DLG_KEYS_DATA( DLGK_GRID_RIGHT, 'l' ),
673 DLG_KEYS_DATA( DLGK_GRID_RIGHT, KEY_RIGHT ),
674 DLG_KEYS_DATA( DLGK_GRID_UP, 'K' ),
675 DLG_KEYS_DATA( DLGK_GRID_UP, 'k' ),
676 DLG_KEYS_DATA( DLGK_GRID_UP, KEY_UP ),
677 DLG_KEYS_DATA( DLGK_PAGE_FIRST, 'g' ),
678 DLG_KEYS_DATA( DLGK_PAGE_FIRST, KEY_HOME ),
679 DLG_KEYS_DATA( DLGK_PAGE_LAST, 'G' ),
680 DLG_KEYS_DATA( DLGK_PAGE_LAST, KEY_END ),
681 DLG_KEYS_DATA( DLGK_PAGE_LAST, KEY_LL ),
682 DLG_KEYS_DATA( DLGK_PAGE_NEXT, ' ' ),
683 DLG_KEYS_DATA( DLGK_PAGE_NEXT, KEY_NPAGE ),
684 DLG_KEYS_DATA( DLGK_PAGE_PREV, 'B' ),
685 DLG_KEYS_DATA( DLGK_PAGE_PREV, 'b' ),
686 DLG_KEYS_DATA( DLGK_PAGE_PREV, KEY_PPAGE ),
687 DLG_KEYS_DATA( DLGK_BEGIN, '0' ),
688 DLG_KEYS_DATA( DLGK_BEGIN, KEY_BEG ),
689 DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ),
690 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ),
696 int old_height = height;
697 int old_width = width;
700 int x, y, cur_x, cur_y;
703 int i, code, passed_end;
704 char search_term[MAX_LEN + 1];
708 int result = DLG_EXIT_UNKNOWN;
709 int button = dlg_default_button();
712 search_term[0] = '\0'; /* no search term entered yet */
714 memset(&obj, 0, sizeof(obj));
716 obj.begin_reached = TRUE;
717 obj.buffer_first = TRUE;
718 obj.end_reached = FALSE;
719 obj.buttons = dlg_exit_label();
721 /* Open input file for reading */
722 if ((obj.fd = open(file, O_RDONLY)) == -1)
723 dlg_exiterr("Can't open input file %s", file);
725 /* Get file size. Actually, 'file_size' is the real file size - 1,
726 since it's only the last byte offset from the beginning */
729 /* Restore file pointer to beginning of file after getting file size */
732 read_high(&obj, BUF_SIZE);
734 dlg_button_layout(obj.buttons, &min_width);
741 dlg_auto_sizefile(title, file, &height, &width, 2, min_width);
742 dlg_print_size(height, width);
743 dlg_ctl_size(height, width);
745 x = dlg_box_x_ordinate(width);
746 y = dlg_box_y_ordinate(height);
748 dialog = dlg_new_window(height, width, y, x);
749 dlg_register_window(dialog, "textbox", binding);
750 dlg_register_buttons(dialog, "textbox", obj.buttons);
752 dlg_mouse_setbase(x, y);
754 /* Create window for text region, used for scrolling text */
755 obj.text = dlg_sub_window(dialog, PAGE_LENGTH, PAGE_WIDTH, y + 1, x + 1);
757 /* register the new window, along with its borders */
758 dlg_mouse_mkbigregion(0, 0, PAGE_LENGTH + 2, width, KEY_MAX, 1, 1, 1 /* lines */ );
759 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
760 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
761 dlg_draw_title(dialog, title);
763 dlg_draw_buttons(dialog, PAGE_LENGTH + 2, 0, obj.buttons, button, FALSE, width);
764 (void) wnoutrefresh(dialog);
765 getyx(dialog, cur_y, cur_x); /* Save cursor position */
767 dlg_attr_clear(obj.text, PAGE_LENGTH, PAGE_WIDTH, dialog_attr);
769 while (result == DLG_EXIT_UNKNOWN) {
772 * Update the screen according to whether we shifted up/down by a line
777 (void) scrollok(obj.text, TRUE);
778 (void) scroll(obj.text); /* Scroll text region up one line */
779 (void) scrollok(obj.text, FALSE);
780 print_line(&obj, PAGE_LENGTH - 1, PAGE_WIDTH);
781 (void) wnoutrefresh(obj.text);
782 } else if (next > 0) {
784 * We don't call print_page() here but use scrolling to ensure
785 * faster screen update. However, 'end_reached' and
786 * 'page_length' should still be updated, and 'in_buf' should
787 * point to start of next page. This is done by calling
788 * get_line() in the following 'for' loop.
790 (void) scrollok(obj.text, TRUE);
791 (void) wscrl(obj.text, -1); /* Scroll text region down one line */
792 (void) scrollok(obj.text, FALSE);
795 for (i = 0; i < PAGE_LENGTH; i++) {
797 print_line(&obj, 0, PAGE_WIDTH); /* print first line of page */
798 (void) wnoutrefresh(obj.text);
800 (void) get_line(&obj); /* Called to update 'end_reached' and 'in_buf' */
803 if (obj.end_reached && !passed_end)
807 print_page(&obj, PAGE_LENGTH, PAGE_WIDTH);
809 print_position(&obj, dialog, height, width);
810 (void) wmove(dialog, cur_y, cur_x); /* Restore cursor position */
813 moved = FALSE; /* assume we'll not move */
814 next = 0; /* ...but not scroll by a line */
816 key = dlg_mouse_wgetch(dialog, &fkey);
817 if (dlg_result_key(key, fkey, &result))
820 if (!fkey && (code = dlg_char_to_button(key, obj.buttons)) >= 0) {
821 result = dlg_ok_buttoncode(code);
828 if (is_DLGK_MOUSE(key)) {
829 result = dlg_exit_buttoncode(key - M_EVENT);
831 result = DLG_EXIT_OK;
836 case DLGK_FIELD_NEXT:
837 button = dlg_next_button(obj.buttons, button);
840 dlg_draw_buttons(dialog,
845 case DLGK_FIELD_PREV:
846 button = dlg_prev_button(obj.buttons, button);
849 dlg_draw_buttons(dialog,
855 if (dialog_vars.nook)
856 result = DLG_EXIT_OK;
858 result = dlg_exit_buttoncode(button);
860 case DLGK_PAGE_FIRST:
861 if (!obj.begin_reached) {
862 obj.begin_reached = 1;
863 /* First page not in buffer? */
864 fpos = ftell_obj(&obj);
866 if (fpos > obj.fd_bytes_read) {
867 /* Yes, we have to read it in */
870 read_high(&obj, BUF_SIZE);
877 obj.end_reached = TRUE;
878 /* Last page not in buffer? */
879 fpos = ftell_obj(&obj);
881 if (fpos < obj.file_size) {
882 /* Yes, we have to read it in */
883 lseek_end(&obj, -BUF_SIZE);
885 read_high(&obj, BUF_SIZE);
887 obj.in_buf = obj.bytes_read;
888 back_lines(&obj, (long) PAGE_LENGTH);
891 case DLGK_GRID_UP: /* Previous line */
892 if (!obj.begin_reached) {
893 back_lines(&obj, obj.page_length + 1);
898 case DLGK_PAGE_PREV: /* Previous page */
899 case DLGK_MOUSE(KEY_PPAGE):
900 if (!obj.begin_reached) {
901 back_lines(&obj, obj.page_length + PAGE_LENGTH);
905 case DLGK_GRID_DOWN: /* Next line */
906 if (!obj.end_reached) {
907 obj.begin_reached = 0;
912 case DLGK_PAGE_NEXT: /* Next page */
913 case DLGK_MOUSE(KEY_NPAGE):
914 if (!obj.end_reached) {
915 obj.begin_reached = 0;
919 case DLGK_BEGIN: /* Beginning of line */
920 if (obj.hscroll > 0) {
922 /* Reprint current page to scroll horizontally */
923 back_lines(&obj, obj.page_length);
927 case DLGK_GRID_LEFT: /* Scroll left */
928 if (obj.hscroll > 0) {
930 /* Reprint current page to scroll horizontally */
931 back_lines(&obj, obj.page_length);
935 case DLGK_GRID_RIGHT: /* Scroll right */
936 if (obj.hscroll < MAX_LEN) {
938 /* Reprint current page to scroll horizontally */
939 back_lines(&obj, obj.page_length);
948 back_lines(&obj, obj.page_length);
951 dlg_del_window(dialog);
953 dlg_mouse_free_regions();
959 case '/': /* Forward search */
960 case 'n': /* Repeat forward search */
961 case '?': /* Backward search */
962 case 'N': /* Repeat backward search */
963 moved = perform_search(&obj, height, width, key, search_term);
973 dlg_del_window(dialog);
975 (void) close(obj.fd);
976 dlg_mouse_free_regions();