Yet another major rework of the BusyBox config system, using the considerably

modified Kbuild system I put into uClibc.  With this, there should be no more
need to modify Rules.mak since I've moved all the interesting options into the
config system.  I think I've got everything updated, but you never know, I may
have made some mistakes, so watch closely.
 -Erik

1 files changed, 363 insertions, 0 deletions

diff --git a/scripts/config/checklist.c b/scripts/config/checklist.c
new file mode 100644
index 000000000..c4a9289b9
--- /dev/null
+++ b/scripts/config/checklist.c
@@ -0,0 +1,363 @@
+/*
+ *  checklist.c -- implements the checklist box
+ *
+ *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *     Stuart Herbert - S.Herbert@sheffield.ac.uk: radiolist extension
+ *     Alessandro Rubini - rubini@ipvvis.unipv.it: merged the two
+ *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "dialog.h"
+
+static int list_width, check_x, item_x, checkflag;
+
+/*
+ * Print list item
+ */
+static void
+print_item (WINDOW * win, const char *item, int status,
+            int choice, int selected)
+{
+    int i;
+
+    /* Clear 'residue' of last item */
+    wattrset (win, menubox_attr);
+    wmove (win, choice, 0);
+    for (i = 0; i < list_width; i++)
+        waddch (win, ' ');
+
+    wmove (win, choice, check_x);
+    wattrset (win, selected ? check_selected_attr : check_attr);
+    if (checkflag == FLAG_CHECK)
+        wprintw (win, "[%c]", status ? 'X' : ' ');
+    else
+        wprintw (win, "(%c)", status ? 'X' : ' ');
+
+    wattrset (win, selected ? tag_selected_attr : tag_attr);
+    mvwaddch(win, choice, item_x, item[0]);
+    wattrset (win, selected ? item_selected_attr : item_attr);
+    waddstr (win, (char *)item+1);
+    if (selected) {
+        wmove (win, choice, check_x+1);
+        wrefresh (win);
+    }
+}
+
+/*
+ * Print the scroll indicators.
+ */
+static void
+print_arrows (WINDOW * win, int choice, int item_no, int scroll,
+                int y, int x, int height)
+{
+    wmove(win, y, x);
+
+    if (scroll > 0) {
+        wattrset (win, uarrow_attr);
+        waddch (win, ACS_UARROW);
+        waddstr (win, "(-)");
+    }
+    else {
+        wattrset (win, menubox_attr);
+        waddch (win, ACS_HLINE);
+        waddch (win, ACS_HLINE);
+        waddch (win, ACS_HLINE);
+        waddch (win, ACS_HLINE);
+    }
+
+   y = y + height + 1;
+   wmove(win, y, x);
+
+   if ((height < item_no) && (scroll + choice < item_no - 1)) {
+        wattrset (win, darrow_attr);
+        waddch (win, ACS_DARROW);
+        waddstr (win, "(+)");
+    }
+    else {
+        wattrset (win, menubox_border_attr);
+        waddch (win, ACS_HLINE);
+        waddch (win, ACS_HLINE);
+        waddch (win, ACS_HLINE);
+        waddch (win, ACS_HLINE);
+   }
+}
+
+/*
+ *  Display the termination buttons
+ */
+static void
+print_buttons( WINDOW *dialog, int height, int width, int selected)
+{
+    int x = width / 2 - 11;
+    int y = height - 2;
+
+    print_button (dialog, "Select", y, x, selected == 0);
+    print_button (dialog, " Help ", y, x + 14, selected == 1);
+
+    wmove(dialog, y, x+1 + 14*selected);
+    wrefresh (dialog);
+}
+
+/*
+ * Display a dialog box with a list of options that can be turned on or off
+ * The `flag' parameter is used to select between radiolist and checklist.
+ */
+int
+dialog_checklist (const char *title, const char *prompt, int height, int width,
+        int list_height, int item_no, struct dialog_list_item ** items,
+        int flag)
+        
+{
+    int i, x, y, box_x, box_y;
+    int key = 0, button = 0, choice = 0, scroll = 0, max_choice, *status;
+    WINDOW *dialog, *list;
+
+    checkflag = flag;
+
+    /* Allocate space for storing item on/off status */
+    if ((status = malloc (sizeof (int) * item_no)) == NULL) {
+        endwin ();
+        fprintf (stderr,
+                 "\nCan't allocate memory in dialog_checklist().\n");
+        exit (-1);
+    }
+
+    /* Initializes status */
+    for (i = 0; i < item_no; i++) {
+        status[i] = items[i]->selected;
+        if (!choice && status[i])
+            choice = i;
+    }
+
+    max_choice = MIN (list_height, item_no);
+
+    /* center dialog box on screen */
+    x = (COLS - width) / 2;
+    y = (LINES - height) / 2;
+
+    draw_shadow (stdscr, y, x, height, width);
+
+    dialog = newwin (height, width, y, x);
+    keypad (dialog, TRUE);
+
+    draw_box (dialog, 0, 0, height, width, dialog_attr, border_attr);
+    wattrset (dialog, border_attr);
+    mvwaddch (dialog, height-3, 0, ACS_LTEE);
+    for (i = 0; i < width - 2; i++)
+        waddch (dialog, ACS_HLINE);
+    wattrset (dialog, dialog_attr);
+    waddch (dialog, ACS_RTEE);
+
+    if (title != NULL && strlen(title) >= width-2 ) {
+        /* truncate long title -- mec */
+        char * title2 = malloc(width-2+1);
+        memcpy( title2, title, width-2 );
+        title2[width-2] = '\0';
+        title = title2;
+    }
+
+    if (title != NULL) {
+        wattrset (dialog, title_attr);
+        mvwaddch (dialog, 0, (width - strlen(title))/2 - 1, ' ');
+        waddstr (dialog, (char *)title);
+        waddch (dialog, ' ');
+    }
+
+    wattrset (dialog, dialog_attr);
+    print_autowrap (dialog, prompt, width - 2, 1, 3);
+
+    list_width = width - 6;
+    box_y = height - list_height - 5;
+    box_x = (width - list_width) / 2 - 1;
+
+    /* create new window for the list */
+    list = subwin (dialog, list_height, list_width, y+box_y+1, x+box_x+1);
+
+    keypad (list, TRUE);
+
+    /* draw a box around the list items */
+    draw_box (dialog, box_y, box_x, list_height + 2, list_width + 2,
+              menubox_border_attr, menubox_attr);
+
+    /* Find length of longest item in order to center checklist */
+    check_x = 0;
+    for (i = 0; i < item_no; i++) 
+        check_x = MAX (check_x, + strlen (items[i]->name) + 4);
+
+    check_x = (list_width - check_x) / 2;
+    item_x = check_x + 4;
+
+    if (choice >= list_height) {
+        scroll = choice - list_height + 1;
+        choice -= scroll;
+    }
+
+    /* Print the list */
+    for (i = 0; i < max_choice; i++) {
+        print_item (list, items[scroll + i]->name,
+                    status[i+scroll], i, i == choice);
+    }
+
+    print_arrows(dialog, choice, item_no, scroll,
+                        box_y, box_x + check_x + 5, list_height);
+
+    print_buttons(dialog, height, width, 0);
+
+    wnoutrefresh (list);
+    wnoutrefresh (dialog);
+    doupdate ();
+
+    while (key != ESC) {
+        key = wgetch (dialog);
+
+        for (i = 0; i < max_choice; i++)
+            if (toupper(key) == toupper(items[scroll + i]->name[0]))
+                break;
+
+
+        if ( i < max_choice || key == KEY_UP || key == KEY_DOWN || 
+            key == '+' || key == '-' ) {
+            if (key == KEY_UP || key == '-') {
+                if (!choice) {
+                    if (!scroll)
+                        continue;
+                    /* Scroll list down */
+                    if (list_height > 1) {
+                        /* De-highlight current first item */
+                        print_item (list, items[scroll]->name,
+                                        status[scroll], 0, FALSE);
+                        scrollok (list, TRUE);
+                        wscrl (list, -1);
+                        scrollok (list, FALSE);
+                    }
+                    scroll--;
+                    print_item (list, items[scroll]->name,
+                                status[scroll], 0, TRUE);
+                    wnoutrefresh (list);
+
+                    print_arrows(dialog, choice, item_no, scroll,
+                                box_y, box_x + check_x + 5, list_height);
+
+                    wrefresh (dialog);
+
+                    continue;   /* wait for another key press */
+                } else
+                    i = choice - 1;
+            } else if (key == KEY_DOWN || key == '+') {
+                if (choice == max_choice - 1) {
+                    if (scroll + choice >= item_no - 1)
+                        continue;
+                    /* Scroll list up */
+                    if (list_height > 1) {
+                        /* De-highlight current last item before scrolling up */
+                        print_item (list, items[scroll + max_choice - 1]->name,
+                                    status[scroll + max_choice - 1],
+                                    max_choice - 1, FALSE);
+                        scrollok (list, TRUE);
+                        scroll (list);
+                        scrollok (list, FALSE);
+                    }
+                    scroll++;
+                    print_item (list, items[scroll + max_choice - 1]->name,
+                                status[scroll + max_choice - 1],
+                                max_choice - 1, TRUE);
+                    wnoutrefresh (list);
+
+                    print_arrows(dialog, choice, item_no, scroll,
+                                box_y, box_x + check_x + 5, list_height);
+
+                    wrefresh (dialog);
+
+                    continue;   /* wait for another key press */
+                } else
+                    i = choice + 1;
+            }
+            if (i != choice) {
+                /* De-highlight current item */
+                print_item (list, items[scroll + choice]->name,
+                            status[scroll + choice], choice, FALSE);
+                /* Highlight new item */
+                choice = i;
+                print_item (list, items[scroll + choice]->name,
+                            status[scroll + choice], choice, TRUE);
+                wnoutrefresh (list);
+                wrefresh (dialog);
+            }
+            continue;           /* wait for another key press */
+        }
+        switch (key) {
+        case 'H':
+        case 'h':
+        case '?':
+            delwin (dialog);
+            free (status);
+            return 1;
+        case TAB:
+        case KEY_LEFT:
+        case KEY_RIGHT:
+            button = ((key == KEY_LEFT ? --button : ++button) < 0)
+                        ? 1 : (button > 1 ? 0 : button);
+
+            print_buttons(dialog, height, width, button);
+            wrefresh (dialog);
+            break;
+        case 'S':
+        case 's':
+        case ' ':
+        case '\n':
+            if (!button) {
+                if (flag == FLAG_CHECK) {
+                    status[scroll + choice] = !status[scroll + choice];
+                    wmove (list, choice, check_x);
+                    wattrset (list, check_selected_attr);
+                    wprintw (list, "[%c]", status[scroll + choice] ? 'X' : ' ');
+                } else {
+                    if (!status[scroll + choice]) {
+                        for (i = 0; i < item_no; i++)
+                            status[i] = 0;
+                        status[scroll + choice] = 1;
+                        for (i = 0; i < max_choice; i++)
+                            print_item (list, items[scroll + i]->name,
+                                        status[scroll + i], i, i == choice);
+                    }
+                }
+                wnoutrefresh (list);
+                wrefresh (dialog);
+            
+                for (i = 0; i < item_no; i++) {
+                        items[i]->selected = status[i];
+                }
+            }
+            delwin (dialog);
+            free (status);
+            return button;
+        case 'X':
+        case 'x':
+            key = ESC;
+        case ESC:
+            break;
+        }
+
+        /* Now, update everything... */
+        doupdate ();
+    }
+    
+
+    delwin (dialog);
+    free (status);
+    return -1;                  /* ESC pressed */
+}