dialog is distributed from GPLv2 to LGPLv2 and introduces a number of new features and a new and better libdialog API. The existing libdialog will be kept temporarily as libodialog for compatibility purposes until sade, sysinstall and tzsetup have been either updated or replaced. __FreeBSD_version is now 900030. Discussed on: -current Approved by: core Obtained from: http://invisible-island.net/dialog
883 lines
21 KiB
C
883 lines
21 KiB
C
/*
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* $Id: fselect.c,v 1.74 2010/04/28 20:45:40 tom Exp $
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*
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* fselect.c -- implements the file-selector box
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*
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* Copyright 2000-2009,2010 Thomas E. Dickey
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License, version 2.1
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to
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* Free Software Foundation, Inc.
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* 51 Franklin St., Fifth Floor
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* Boston, MA 02110, USA.
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*/
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#include <dialog.h>
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#include <dlg_keys.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#if HAVE_DIRENT_H
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# include <dirent.h>
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# define NAMLEN(dirent) strlen((dirent)->d_name)
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#else
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# define dirent direct
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# define NAMLEN(dirent) (dirent)->d_namlen
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# if HAVE_SYS_NDIR_H
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# include <sys/ndir.h>
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# endif
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# if HAVE_SYS_DIR_H
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# include <sys/dir.h>
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# endif
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# if HAVE_NDIR_H
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# include <ndir.h>
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# endif
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#endif
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# if defined(_FILE_OFFSET_BITS) && defined(HAVE_STRUCT_DIRENT64)
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# if !defined(_LP64) && (_FILE_OFFSET_BITS == 64)
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# define DIRENT struct dirent64
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# else
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# define DIRENT struct dirent
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# endif
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# else
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# define DIRENT struct dirent
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# endif
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#define EXT_WIDE 1
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#define HDR_HIGH 1
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#define BTN_HIGH (1 + 2 * MARGIN) /* Ok/Cancel, also input-box */
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#define MIN_HIGH (HDR_HIGH - MARGIN + (BTN_HIGH * 2) + 4 * MARGIN)
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#define MIN_WIDE (2 * MAX(dlg_count_columns(d_label), dlg_count_columns(f_label)) + 6 * MARGIN + 2 * EXT_WIDE)
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#define MOUSE_D (KEY_MAX + 0)
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#define MOUSE_F (KEY_MAX + 10000)
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#define MOUSE_T (KEY_MAX + 20000)
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typedef enum {
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sDIRS = -3
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,sFILES = -2
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,sTEXT = -1
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} STATES;
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typedef struct {
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WINDOW *par; /* parent window */
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WINDOW *win; /* this window */
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int length; /* length of the data[] array */
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int offset; /* index of first item on screen */
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int choice; /* index of the selection */
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int mousex; /* base of mouse-code return-values */
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unsigned allocd;
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char **data;
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} LIST;
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typedef struct {
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int length;
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char **data;
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} MATCH;
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static void
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init_list(LIST * list, WINDOW *par, WINDOW *win, int mousex)
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{
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list->par = par;
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list->win = win;
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list->length = 0;
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list->offset = 0;
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list->choice = 0;
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list->mousex = mousex;
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list->allocd = 0;
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list->data = 0;
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dlg_mouse_mkbigregion(getbegy(win), getbegx(win),
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getmaxy(win), getmaxx(win),
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mousex, 1, 1, 1 /* by lines */ );
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}
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static char *
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leaf_of(char *path)
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{
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char *leaf = strrchr(path, '/');
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if (leaf != 0)
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leaf++;
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else
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leaf = path;
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return leaf;
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}
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static char *
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data_of(LIST * list)
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{
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if (list != 0
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&& list->data != 0)
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return list->data[list->choice];
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return 0;
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}
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static void
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free_list(LIST * list, int reinit)
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{
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int n;
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if (list->data != 0) {
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for (n = 0; list->data[n] != 0; n++)
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free(list->data[n]);
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free(list->data);
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list->data = 0;
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}
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if (reinit)
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init_list(list, list->par, list->win, list->mousex);
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}
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static void
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add_to_list(LIST * list, char *text)
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{
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unsigned need;
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need = (unsigned) (list->length + 1);
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if (need + 1 > list->allocd) {
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list->allocd = 2 * (need + 1);
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if (list->data == 0) {
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list->data = dlg_malloc(char *, list->allocd);
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} else {
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list->data = dlg_realloc(char *, list->allocd, list->data);
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}
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assert_ptr(list->data, "add_to_list");
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}
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list->data[list->length++] = dlg_strclone(text);
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list->data[list->length] = 0;
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}
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static void
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keep_visible(LIST * list)
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{
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int high = getmaxy(list->win);
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if (list->choice < list->offset) {
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list->offset = list->choice;
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}
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if (list->choice - list->offset >= high)
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list->offset = list->choice - high + 1;
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}
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#define Value(c) (int)((c) & 0xff)
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static int
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find_choice(char *target, LIST * list)
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{
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int n;
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int choice = list->choice;
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int len_1, len_2, cmp_1, cmp_2;
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if (*target == 0) {
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list->choice = 0;
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} else {
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/* find the match with the longest length. If more than one has the
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* same length, choose the one with the closest match of the final
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* character.
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*/
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len_1 = 0;
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cmp_1 = 256;
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for (n = 0; n < list->length; n++) {
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char *a = target;
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char *b = list->data[n];
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len_2 = 0;
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while ((*a != 0) && (*b != 0) && (*a == *b)) {
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a++;
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b++;
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len_2++;
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}
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cmp_2 = Value(*a) - Value(*b);
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if (cmp_2 < 0)
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cmp_2 = -cmp_2;
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if ((len_2 > len_1)
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|| (len_1 == len_2 && cmp_2 < cmp_1)) {
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len_1 = len_2;
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cmp_1 = cmp_2;
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list->choice = n;
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}
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}
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}
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if (choice != list->choice) {
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keep_visible(list);
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}
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return (choice != list->choice);
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}
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static void
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display_list(LIST * list)
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{
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int n;
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int x;
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int y;
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int top;
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int bottom;
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if (list->win != 0) {
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dlg_attr_clear(list->win, getmaxy(list->win), getmaxx(list->win), item_attr);
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for (n = list->offset; n < list->length && list->data[n]; n++) {
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y = n - list->offset;
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if (y >= getmaxy(list->win))
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break;
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(void) wmove(list->win, y, 0);
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if (n == list->choice)
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wattrset(list->win, item_selected_attr);
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(void) waddstr(list->win, list->data[n]);
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wattrset(list->win, item_attr);
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}
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wattrset(list->win, item_attr);
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getparyx(list->win, y, x);
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top = y - 1;
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bottom = y + getmaxy(list->win);
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dlg_draw_scrollbar(list->par,
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list->offset,
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list->offset,
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list->offset + getmaxy(list->win),
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list->length,
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x + 1,
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x + getmaxx(list->win),
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top,
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bottom,
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menubox_attr,
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menubox_border_attr);
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(void) wmove(list->win, list->choice - list->offset, 0);
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(void) wnoutrefresh(list->win);
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}
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}
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/* FIXME: see arrows.c
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* This workaround is used to allow two lists to have scroll-tabs at the same
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* time, by reassigning their return-values to be different. Just for
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* readability, we use the names of keys with similar connotations, though all
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* that is really required is that they're distinct, so we can put them in a
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* switch statement.
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*/
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static void
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fix_arrows(LIST * list)
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{
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int x;
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int y;
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int top;
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int bottom;
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if (list->win != 0) {
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getparyx(list->win, y, x);
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top = y - 1;
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bottom = y + getmaxy(list->win);
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mouse_mkbutton(top, x, 6,
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((list->mousex == MOUSE_D)
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? KEY_PREVIOUS
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: KEY_PPAGE));
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mouse_mkbutton(bottom, x, 6,
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((list->mousex == MOUSE_D)
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? KEY_NEXT
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: KEY_NPAGE));
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}
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}
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static int
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show_list(char *target, LIST * list, bool keep)
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{
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int changed = keep || find_choice(target, list);
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display_list(list);
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return changed;
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}
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/*
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* Highlight the closest match to 'target' in the given list, setting offset
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* to match.
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*/
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static int
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show_both_lists(char *input, LIST * d_list, LIST * f_list, bool keep)
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{
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char *leaf = leaf_of(input);
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return show_list(leaf, d_list, keep) | show_list(leaf, f_list, keep);
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}
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/*
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* Move up/down in the given list
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*/
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static bool
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change_list(int choice, LIST * list)
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{
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if (data_of(list) != 0) {
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int last = list->length - 1;
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choice += list->choice;
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if (choice < 0)
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choice = 0;
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if (choice > last)
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choice = last;
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list->choice = choice;
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keep_visible(list);
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display_list(list);
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return TRUE;
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}
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return FALSE;
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}
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static void
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scroll_list(int direction, LIST * list)
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{
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if (data_of(list) != 0) {
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int length = getmaxy(list->win);
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if (change_list(direction * length, list))
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return;
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}
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beep();
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}
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static int
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compar(const void *a, const void *b)
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{
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return strcmp(*(const char *const *) a, *(const char *const *) b);
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}
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static void
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match(char *name, LIST * d_list, LIST * f_list, MATCH * match_list)
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{
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char *test = leaf_of(name);
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size_t test_len = strlen(test);
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char **matches = dlg_malloc(char *, (size_t) (d_list->length + f_list->length));
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size_t data_len = 0;
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int i;
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for (i = 2; i < d_list->length; i++) {
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if (strncmp(test, d_list->data[i], test_len) == 0) {
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matches[data_len++] = d_list->data[i];
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}
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}
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for (i = 0; i < f_list->length; i++) {
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if (strncmp(test, f_list->data[i], test_len) == 0) {
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matches[data_len++] = f_list->data[i];
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}
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}
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matches = dlg_realloc(char *, data_len, matches);
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match_list->data = matches;
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match_list->length = (int) data_len;
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}
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static void
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free_match(MATCH * match_list)
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{
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free(match_list->data);
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match_list->length = 0;
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}
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static int
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complete(char *name, LIST * d_list, LIST * f_list, char **buff_ptr)
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{
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MATCH match_list;
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char *test;
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size_t test_len;
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size_t i;
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int j;
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char *buff;
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match(name, d_list, f_list, &match_list);
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if (match_list.length == 0) {
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*buff_ptr = NULL;
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return 0;
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}
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test = match_list.data[0];
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test_len = strlen(test);
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buff = dlg_malloc(char, test_len + 2);
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if (match_list.length == 1) {
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strcpy(buff, test);
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i = test_len;
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if (test == data_of(d_list)) {
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buff[test_len] = '/';
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i++;
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}
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} else {
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for (i = 0; i < test_len; i++) {
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char test_char = test[i];
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if (test_char == '\0')
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break;
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for (j = 0; j < match_list.length; j++) {
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if (match_list.data[j][i] != test_char) {
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break;
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}
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}
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if (j == match_list.length) {
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(buff)[i] = test_char;
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} else
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break;
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}
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buff = dlg_realloc(char, i + 1, buff);
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}
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free_match(&match_list);
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buff[i] = '\0';
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*buff_ptr = buff;
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return (i != 0);
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}
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static bool
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fill_lists(char *current, char *input, LIST * d_list, LIST * f_list, bool keep)
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{
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DIR *dp;
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DIRENT *de;
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struct stat sb;
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int n;
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char path[MAX_LEN + 1];
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char *leaf;
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/* check if we've updated the lists */
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for (n = 0; current[n] && input[n]; n++) {
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if (current[n] != input[n])
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break;
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}
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if (current[n] == input[n])
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return FALSE;
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if (strchr(current + n, '/') == 0
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&& strchr(input + n, '/') == 0) {
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return show_both_lists(input, d_list, f_list, keep);
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}
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strcpy(current, input);
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/* refill the lists */
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free_list(d_list, TRUE);
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free_list(f_list, TRUE);
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strcpy(path, current);
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if ((leaf = strrchr(path, '/')) != 0) {
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*++leaf = 0;
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} else {
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strcpy(path, "./");
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leaf = path + strlen(path);
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}
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if ((dp = opendir(path)) != 0) {
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while ((de = readdir(dp)) != 0) {
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strncpy(leaf, de->d_name, NAMLEN(de))[NAMLEN(de)] = 0;
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if (stat(path, &sb) == 0) {
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if ((sb.st_mode & S_IFMT) == S_IFDIR)
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add_to_list(d_list, leaf);
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else if (f_list->win)
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add_to_list(f_list, leaf);
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}
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}
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(void) closedir(dp);
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/* sort the lists */
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qsort(d_list->data,
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(size_t) d_list->length,
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sizeof(d_list->data[0]),
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compar);
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qsort(f_list->data,
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(size_t) f_list->length,
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sizeof(f_list->data[0]),
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compar);
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}
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(void) show_both_lists(input, d_list, f_list, FALSE);
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d_list->offset = d_list->choice;
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f_list->offset = f_list->choice;
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return TRUE;
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}
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static bool
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usable_state(int state, LIST * dirs, LIST * files)
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{
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bool result;
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switch (state) {
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case sDIRS:
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result = (dirs->win != 0) && (data_of(dirs) != 0);
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break;
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case sFILES:
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result = (files->win != 0) && (data_of(files) != 0);
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break;
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default:
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result = TRUE;
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break;
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}
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return result;
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}
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#define which_list() ((state == sFILES) \
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? &f_list \
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: ((state == sDIRS) \
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? &d_list \
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: 0))
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#define NAVIGATE_BINDINGS \
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DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ), \
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DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ), \
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DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ), \
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DLG_KEYS_DATA( DLGK_ITEM_NEXT, KEY_DOWN ), \
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DLG_KEYS_DATA( DLGK_ITEM_NEXT, CHR_NEXT ), \
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DLG_KEYS_DATA( DLGK_ITEM_NEXT, KEY_NEXT ), \
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DLG_KEYS_DATA( DLGK_ITEM_PREV, CHR_PREVIOUS ), \
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DLG_KEYS_DATA( DLGK_ITEM_PREV, KEY_UP ), \
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DLG_KEYS_DATA( DLGK_PAGE_NEXT, KEY_NPAGE ), \
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DLG_KEYS_DATA( DLGK_PAGE_PREV, KEY_PPAGE )
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/*
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* Display a dialog box for entering a filename
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*/
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static int
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dlg_fselect(const char *title, const char *path, int height, int width, bool dselect)
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{
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/* *INDENT-OFF* */
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static DLG_KEYS_BINDING binding[] = {
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ENTERKEY_BINDINGS,
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NAVIGATE_BINDINGS,
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END_KEYS_BINDING
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};
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static DLG_KEYS_BINDING binding2[] = {
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INPUTSTR_BINDINGS,
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ENTERKEY_BINDINGS,
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NAVIGATE_BINDINGS,
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END_KEYS_BINDING
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};
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/* *INDENT-ON* */
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#ifdef KEY_RESIZE
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int old_height = height;
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int old_width = width;
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bool resized = FALSE;
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#endif
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int tbox_y, tbox_x, tbox_width, tbox_height;
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int dbox_y, dbox_x, dbox_width, dbox_height;
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int fbox_y, fbox_x, fbox_width, fbox_height;
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int show_buttons = TRUE;
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int offset = 0;
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int key = 0;
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int fkey = FALSE;
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int code;
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int result = DLG_EXIT_UNKNOWN;
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int state = dialog_vars.defaultno ? dlg_defaultno_button() : sTEXT;
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int button = state;
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int first = (state == sTEXT);
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char *input;
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char *completed;
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char current[MAX_LEN + 1];
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WINDOW *dialog = 0;
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WINDOW *w_text = 0;
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WINDOW *w_work = 0;
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const char **buttons = dlg_ok_labels();
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char *d_label = _("Directories");
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char *f_label = _("Files");
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char *partial;
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int min_wide = MIN_WIDE;
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int min_items = height ? 0 : 4;
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LIST d_list, f_list;
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dlg_does_output();
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/* Set up the initial value */
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input = dlg_set_result(path);
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offset = (int) strlen(input);
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*current = 0;
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dlg_button_layout(buttons, &min_wide);
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#ifdef KEY_RESIZE
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retry:
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#endif
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dlg_auto_size(title, (char *) 0, &height, &width, 6, 25);
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height += MIN_HIGH + min_items;
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if (width < min_wide)
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width = min_wide;
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dlg_print_size(height, width);
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dlg_ctl_size(height, width);
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dialog = dlg_new_window(height, width,
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dlg_box_y_ordinate(height),
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dlg_box_x_ordinate(width));
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dlg_register_window(dialog, "fselect", binding);
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dlg_register_buttons(dialog, "fselect", buttons);
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dlg_mouse_setbase(0, 0);
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dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
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dlg_draw_bottom_box(dialog);
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dlg_draw_title(dialog, title);
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wattrset(dialog, dialog_attr);
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/* Draw the input field box */
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tbox_height = 1;
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tbox_width = width - (4 * MARGIN + 2);
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tbox_y = height - (BTN_HIGH * 2) + MARGIN;
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tbox_x = (width - tbox_width) / 2;
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w_text = derwin(dialog, tbox_height, tbox_width, tbox_y, tbox_x);
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if (w_text == 0)
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return DLG_EXIT_ERROR;
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(void) keypad(w_text, TRUE);
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dlg_draw_box(dialog, tbox_y - MARGIN, tbox_x - MARGIN,
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(2 * MARGIN + 1), tbox_width + (MARGIN + EXT_WIDE),
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menubox_border_attr, menubox_attr);
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dlg_mouse_mkbigregion(getbegy(dialog) + tbox_y - MARGIN,
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getbegx(dialog) + tbox_x - MARGIN,
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1 + (2 * MARGIN),
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tbox_width + (MARGIN + EXT_WIDE),
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MOUSE_T, 1, 1, 3 /* doesn't matter */ );
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dlg_register_window(w_text, "fselect", binding2);
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/* Draw the directory listing box */
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if (dselect)
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dbox_width = (width - (6 * MARGIN));
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else
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dbox_width = (width - (6 * MARGIN + 2 * EXT_WIDE)) / 2;
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dbox_height = height - MIN_HIGH;
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dbox_y = (2 * MARGIN + 1);
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dbox_x = tbox_x;
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w_work = derwin(dialog, dbox_height, dbox_width, dbox_y, dbox_x);
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if (w_work == 0)
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return DLG_EXIT_ERROR;
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(void) keypad(w_work, TRUE);
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(void) mvwprintw(dialog, dbox_y - (MARGIN + 1), dbox_x - MARGIN, d_label);
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dlg_draw_box(dialog,
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dbox_y - MARGIN, dbox_x - MARGIN,
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dbox_height + (MARGIN + 1), dbox_width + (MARGIN + 1),
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menubox_border_attr, menubox_attr);
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init_list(&d_list, dialog, w_work, MOUSE_D);
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if (!dselect) {
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/* Draw the filename listing box */
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fbox_height = dbox_height;
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fbox_width = dbox_width;
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fbox_y = dbox_y;
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fbox_x = tbox_x + dbox_width + (2 * MARGIN);
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w_work = derwin(dialog, fbox_height, fbox_width, fbox_y, fbox_x);
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if (w_work == 0)
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return DLG_EXIT_ERROR;
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(void) keypad(w_work, TRUE);
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(void) mvwprintw(dialog, fbox_y - (MARGIN + 1), fbox_x - MARGIN, f_label);
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dlg_draw_box(dialog,
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fbox_y - MARGIN, fbox_x - MARGIN,
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fbox_height + (MARGIN + 1), fbox_width + (MARGIN + 1),
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menubox_border_attr, menubox_attr);
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init_list(&f_list, dialog, w_work, MOUSE_F);
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} else {
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memset(&f_list, 0, sizeof(f_list));
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}
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while (result == DLG_EXIT_UNKNOWN) {
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if (fill_lists(current, input, &d_list, &f_list, state < sTEXT))
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show_buttons = TRUE;
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#ifdef KEY_RESIZE
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if (resized) {
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resized = FALSE;
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dlg_show_string(w_text, input, offset, inputbox_attr,
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0, 0, tbox_width, 0, first);
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}
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#endif
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/*
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* The last field drawn determines where the cursor is shown:
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*/
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if (show_buttons) {
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show_buttons = FALSE;
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button = (state < 0) ? 0 : state;
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dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
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}
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if (state < 0) {
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switch (state) {
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case sTEXT:
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dlg_set_focus(dialog, w_text);
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break;
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case sFILES:
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dlg_set_focus(dialog, f_list.win);
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break;
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case sDIRS:
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dlg_set_focus(dialog, d_list.win);
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break;
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}
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}
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if (first) {
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(void) wrefresh(dialog);
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} else {
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fix_arrows(&d_list);
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fix_arrows(&f_list);
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key = dlg_mouse_wgetch((state == sTEXT) ? w_text : dialog, &fkey);
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if (dlg_result_key(key, fkey, &result))
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break;
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}
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if (!fkey && key == ' ') {
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key = DLGK_SELECT;
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fkey = TRUE;
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}
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if (fkey) {
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switch (key) {
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case DLGK_MOUSE(KEY_PREVIOUS):
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state = sDIRS;
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scroll_list(-1, which_list());
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continue;
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case DLGK_MOUSE(KEY_NEXT):
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state = sDIRS;
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scroll_list(1, which_list());
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continue;
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case DLGK_MOUSE(KEY_PPAGE):
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state = sFILES;
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scroll_list(-1, which_list());
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continue;
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case DLGK_MOUSE(KEY_NPAGE):
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state = sFILES;
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scroll_list(1, which_list());
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continue;
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case DLGK_PAGE_PREV:
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scroll_list(-1, which_list());
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continue;
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case DLGK_PAGE_NEXT:
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scroll_list(1, which_list());
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continue;
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case DLGK_ITEM_PREV:
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if (change_list(-1, which_list()))
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continue;
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/* FALLTHRU */
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case DLGK_FIELD_PREV:
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show_buttons = TRUE;
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do {
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state = dlg_prev_ok_buttonindex(state, sDIRS);
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} while (!usable_state(state, &d_list, &f_list));
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continue;
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case DLGK_ITEM_NEXT:
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if (change_list(1, which_list()))
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continue;
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/* FALLTHRU */
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case DLGK_FIELD_NEXT:
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show_buttons = TRUE;
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do {
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state = dlg_next_ok_buttonindex(state, sDIRS);
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} while (!usable_state(state, &d_list, &f_list));
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continue;
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case DLGK_SELECT:
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completed = 0;
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partial = 0;
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if (state == sFILES && !dselect) {
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completed = data_of(&f_list);
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} else if (state == sDIRS) {
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completed = data_of(&d_list);
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} else {
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if (complete(input, &d_list, &f_list, &partial)) {
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completed = partial;
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}
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}
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if (completed != 0) {
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state = sTEXT;
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show_buttons = TRUE;
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strcpy(leaf_of(input), completed);
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offset = (int) strlen(input);
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dlg_show_string(w_text, input, offset, inputbox_attr,
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0, 0, tbox_width, 0, first);
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if (partial != NULL)
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free(partial);
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continue;
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} else { /* if (state < sTEXT) */
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(void) beep();
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continue;
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}
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/* FALLTHRU */
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case DLGK_ENTER:
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result = (state > 0) ? dlg_ok_buttoncode(state) : DLG_EXIT_OK;
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continue;
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#ifdef KEY_RESIZE
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case KEY_RESIZE:
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/* reset data */
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height = old_height;
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width = old_width;
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show_buttons = TRUE;
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*current = 0;
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resized = TRUE;
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/* repaint */
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dlg_clear();
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dlg_del_window(dialog);
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refresh();
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dlg_mouse_free_regions();
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goto retry;
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#endif
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default:
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if (key >= DLGK_MOUSE(MOUSE_T)) {
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state = sTEXT;
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continue;
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} else if (key >= DLGK_MOUSE(MOUSE_F)) {
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if (f_list.win != 0) {
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state = sFILES;
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f_list.choice = (key - DLGK_MOUSE(MOUSE_F)) + f_list.offset;
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display_list(&f_list);
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}
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continue;
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} else if (key >= DLGK_MOUSE(MOUSE_D)) {
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if (d_list.win != 0) {
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state = sDIRS;
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d_list.choice = (key - DLGK_MOUSE(MOUSE_D)) + d_list.offset;
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display_list(&d_list);
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}
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continue;
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} else if (is_DLGK_MOUSE(key)
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&& (code = dlg_ok_buttoncode(key - M_EVENT)) >= 0) {
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result = code;
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continue;
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}
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break;
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}
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}
|
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if (state < 0) { /* Input box selected if we're editing */
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int edit = dlg_edit_string(input, &offset, key, fkey, first);
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|
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if (edit) {
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dlg_show_string(w_text, input, offset, inputbox_attr,
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0, 0, tbox_width, 0, first);
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first = FALSE;
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state = sTEXT;
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}
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} else if (state >= 0 &&
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(code = dlg_char_to_button(key, buttons)) >= 0) {
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result = dlg_ok_buttoncode(code);
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break;
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}
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}
|
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|
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dlg_unregister_window(w_text);
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dlg_del_window(dialog);
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dlg_mouse_free_regions();
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free_list(&d_list, FALSE);
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free_list(&f_list, FALSE);
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return result;
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}
|
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|
|
/*
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* Display a dialog box for entering a filename
|
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*/
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int
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dialog_fselect(const char *title, const char *path, int height, int width)
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{
|
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return dlg_fselect(title, path, height, width, FALSE);
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}
|
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|
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/*
|
|
* Display a dialog box for entering a directory
|
|
*/
|
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int
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dialog_dselect(const char *title, const char *path, int height, int width)
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|
{
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return dlg_fselect(title, path, height, width, TRUE);
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}
|