1 files changed, 425 insertions, 0 deletions

diff --git a/scripts/kconfig/lxdialog/menubox.c b/scripts/kconfig/lxdialog/menubox.c
new file mode 100644
index 000000000000..09512b544375
--- /dev/null
+++ b/scripts/kconfig/lxdialog/menubox.c
@@ -0,0 +1,425 @@
+/*
+ *  menubox.c -- implements the menu box
+ *
+ *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcapw@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.
+ */
+
+/*
+ *  Changes by Clifford Wolf (god@clifford.at)
+ *
+ *  [ 1998-06-13 ]
+ *
+ *    *)  A bugfix for the Page-Down problem
+ *
+ *    *)  Formerly when I used Page Down and Page Up, the cursor would be set 
+ *        to the first position in the menu box.  Now lxdialog is a bit
+ *        smarter and works more like other menu systems (just have a look at
+ *        it).
+ *
+ *    *)  Formerly if I selected something my scrolling would be broken because
+ *        lxdialog is re-invoked by the Menuconfig shell script, can't
+ *        remember the last scrolling position, and just sets it so that the
+ *        cursor is at the bottom of the box.  Now it writes the temporary file
+ *        lxdialog.scrltmp which contains this information. The file is
+ *        deleted by lxdialog if the user leaves a submenu or enters a new
+ *        one, but it would be nice if Menuconfig could make another "rm -f"
+ *        just to be sure.  Just try it out - you will recognise a difference!
+ *
+ *  [ 1998-06-14 ]
+ *
+ *    *)  Now lxdialog is crash-safe against broken "lxdialog.scrltmp" files
+ *        and menus change their size on the fly.
+ *
+ *    *)  If for some reason the last scrolling position is not saved by
+ *        lxdialog, it sets the scrolling so that the selected item is in the
+ *        middle of the menu box, not at the bottom.
+ *
+ * 02 January 1999, Michael Elizabeth Chastain (mec@shout.net)
+ * Reset 'scroll' to 0 if the value from lxdialog.scrltmp is bogus.
+ * This fixes a bug in Menuconfig where using ' ' to descend into menus
+ * would leave mis-synchronized lxdialog.scrltmp files lying around,
+ * fscanf would read in 'scroll', and eventually that value would get used.
+ */
+
+#include "dialog.h"
+
+#define ITEM_IDENT 1   /* Indent of menu entries. Fixed for all menus */
+static int menu_width;
+
+/*
+ * Print menu item
+ */
+static void do_print_item(WINDOW * win, const char *item, int choice,
+                          int selected, int hotkey)
+{
+        int j;
+        char *menu_item = malloc(menu_width + 1);
+
+        strncpy(menu_item, item, menu_width - ITEM_IDENT);
+        menu_item[menu_width] = 0;
+        j = first_alpha(menu_item, "YyNnMmHh");
+
+        /* Clear 'residue' of last item */
+        wattrset(win, menubox_attr);
+        wmove(win, choice, 0);
+#if OLD_NCURSES
+        {
+                int i;
+                for (i = 0; i < menu_width; i++)
+                        waddch(win, ' ');
+        }
+#else
+        wclrtoeol(win);
+#endif
+        wattrset(win, selected ? item_selected_attr : item_attr);
+        mvwaddstr(win, choice, ITEM_IDENT, menu_item);
+        if (hotkey) {
+                wattrset(win, selected ? tag_key_selected_attr : tag_key_attr);
+                mvwaddch(win, choice, ITEM_IDENT + j, menu_item[j]);
+        }
+        if (selected) {
+                wmove(win, choice, ITEM_IDENT + 1);
+        }
+        free(menu_item);
+        wrefresh(win);
+}
+
+#define print_item(index, choice, selected) \
+do {\
+        int hotkey = (items[(index) * 2][0] != ':'); \
+        do_print_item(menu, items[(index) * 2 + 1], choice, selected, hotkey); \
+} while (0)
+
+/*
+ * Print the scroll indicators.
+ */
+static void print_arrows(WINDOW * win, int item_no, int scroll, int y, int x,
+                         int height)
+{
+        int cur_y, cur_x;
+
+        getyx(win, cur_y, cur_x);
+
+        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);
+        wrefresh(win);
+
+        if ((height < item_no) && (scroll + height < item_no)) {
+                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);
+        }
+
+        wmove(win, cur_y, cur_x);
+        wrefresh(win);
+}
+
+/*
+ * Display the termination buttons.
+ */
+static void print_buttons(WINDOW * win, int height, int width, int selected)
+{
+        int x = width / 2 - 16;
+        int y = height - 2;
+
+        print_button(win, "Select", y, x, selected == 0);
+        print_button(win, " Exit ", y, x + 12, selected == 1);
+        print_button(win, " Help ", y, x + 24, selected == 2);
+
+        wmove(win, y, x + 1 + 12 * selected);
+        wrefresh(win);
+}
+
+/* scroll up n lines (n may be negative) */
+static void do_scroll(WINDOW *win, int *scroll, int n)
+{
+        /* Scroll menu up */
+        scrollok(win, TRUE);
+        wscrl(win, n);
+        scrollok(win, FALSE);
+        *scroll = *scroll + n;
+        wrefresh(win);
+}
+
+/*
+ * Display a menu for choosing among a number of options
+ */
+int dialog_menu(const char *title, const char *prompt, int height, int width,
+                int menu_height, const char *current, int item_no,
+                const char *const *items)
+{
+        int i, j, x, y, box_x, box_y;
+        int key = 0, button = 0, scroll = 0, choice = 0;
+        int first_item =  0, max_choice;
+        WINDOW *dialog, *menu;
+        FILE *f;
+
+        max_choice = MIN(menu_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);
+        wbkgdset(dialog, dialog_attr & A_COLOR);
+        waddch(dialog, ACS_RTEE);
+
+        print_title(dialog, title, width);
+
+        wattrset(dialog, dialog_attr);
+        print_autowrap(dialog, prompt, width - 2, 1, 3);
+
+        menu_width = width - 6;
+        box_y = height - menu_height - 5;
+        box_x = (width - menu_width) / 2 - 1;
+
+        /* create new window for the menu */
+        menu = subwin(dialog, menu_height, menu_width,
+                      y + box_y + 1, x + box_x + 1);
+        keypad(menu, TRUE);
+
+        /* draw a box around the menu items */
+        draw_box(dialog, box_y, box_x, menu_height + 2, menu_width + 2,
+                 menubox_border_attr, menubox_attr);
+
+        /* Set choice to default item */
+        for (i = 0; i < item_no; i++)
+                if (strcmp(current, items[i * 2]) == 0)
+                        choice = i;
+
+        /* get the scroll info from the temp file */
+        if ((f = fopen("lxdialog.scrltmp", "r")) != NULL) {
+                if ((fscanf(f, "%d\n", &scroll) == 1) && (scroll <= choice) &&
+                    (scroll + max_choice > choice) && (scroll >= 0) &&
+                    (scroll + max_choice <= item_no)) {
+                        first_item = scroll;
+                        choice = choice - scroll;
+                        fclose(f);
+                } else {
+                        scroll = 0;
+                        remove("lxdialog.scrltmp");
+                        fclose(f);
+                        f = NULL;
+                }
+        }
+        if ((choice >= max_choice) || (f == NULL && choice >= max_choice / 2)) {
+                if (choice >= item_no - max_choice / 2)
+                        scroll = first_item = item_no - max_choice;
+                else
+                        scroll = first_item = choice - max_choice / 2;
+                choice = choice - scroll;
+        }
+
+        /* Print the menu */
+        for (i = 0; i < max_choice; i++) {
+                print_item(first_item + i, i, i == choice);
+        }
+
+        wnoutrefresh(menu);
+
+        print_arrows(dialog, item_no, scroll,
+                     box_y, box_x + ITEM_IDENT + 1, menu_height);
+
+        print_buttons(dialog, height, width, 0);
+        wmove(menu, choice, ITEM_IDENT + 1);
+        wrefresh(menu);
+
+        while (key != ESC) {
+                key = wgetch(menu);
+
+                if (key < 256 && isalpha(key))
+                        key = tolower(key);
+
+                if (strchr("ynmh", key))
+                        i = max_choice;
+                else {
+                        for (i = choice + 1; i < max_choice; i++) {
+                                j = first_alpha(items[(scroll + i) * 2 + 1], "YyNnMmHh");
+                                if (key == tolower(items[(scroll + i) * 2 + 1][j]))
+                                        break;
+                        }
+                        if (i == max_choice)
+                                for (i = 0; i < max_choice; i++) {
+                                        j = first_alpha(items [(scroll + i) * 2 + 1], "YyNnMmHh");
+                                        if (key == tolower(items[(scroll + i) * 2 + 1][j]))
+                                                break;
+                                }
+                }
+
+                if (i < max_choice ||
+                    key == KEY_UP || key == KEY_DOWN ||
+                    key == '-' || key == '+' ||
+                    key == KEY_PPAGE || key == KEY_NPAGE) {
+                        /* Remove highligt of current item */
+                        print_item(scroll + choice, choice, FALSE);
+
+                        if (key == KEY_UP || key == '-') {
+                                if (choice < 2 && scroll) {
+                                        /* Scroll menu down */
+                                        do_scroll(menu, &scroll, -1);
+
+                                        print_item(scroll, 0, FALSE);
+                                } else
+                                        choice = MAX(choice - 1, 0);
+
+                        } else if (key == KEY_DOWN || key == '+') {
+                                print_item(scroll+choice, choice, FALSE);
+
+                                if ((choice > max_choice - 3) &&
+                                    (scroll + max_choice < item_no)) {
+                                        /* Scroll menu up */
+                                        do_scroll(menu, &scroll, 1);
+
+                                        print_item(scroll+max_choice - 1,
+                                                   max_choice - 1, FALSE);
+                                } else
+                                        choice = MIN(choice + 1, max_choice - 1);
+
+                        } else if (key == KEY_PPAGE) {
+                                scrollok(menu, TRUE);
+                                for (i = 0; (i < max_choice); i++) {
+                                        if (scroll > 0) {
+                                                do_scroll(menu, &scroll, -1);
+                                                print_item(scroll, 0, FALSE);
+                                        } else {
+                                                if (choice > 0)
+                                                        choice--;
+                                        }
+                                }
+
+                        } else if (key == KEY_NPAGE) {
+                                for (i = 0; (i < max_choice); i++) {
+                                        if (scroll + max_choice < item_no) {
+                                                do_scroll(menu, &scroll, 1);
+                                                print_item(scroll+max_choice-1,
+                                                           max_choice - 1, FALSE);
+                                        } else {
+                                                if (choice + 1 < max_choice)
+                                                        choice++;
+                                        }
+                                }
+                        } else
+                                choice = i;
+
+                        print_item(scroll + choice, choice, TRUE);
+
+                        print_arrows(dialog, item_no, scroll,
+                                     box_y, box_x + ITEM_IDENT + 1, menu_height);
+
+                        wnoutrefresh(dialog);
+                        wrefresh(menu);
+
+                        continue;       /* wait for another key press */
+                }
+
+                switch (key) {
+                case KEY_LEFT:
+                case TAB:
+                case KEY_RIGHT:
+                        button = ((key == KEY_LEFT ? --button : ++button) < 0)
+                            ? 2 : (button > 2 ? 0 : button);
+
+                        print_buttons(dialog, height, width, button);
+                        wrefresh(menu);
+                        break;
+                case ' ':
+                case 's':
+                case 'y':
+                case 'n':
+                case 'm':
+                case '/':
+                        /* save scroll info */
+                        if ((f = fopen("lxdialog.scrltmp", "w")) != NULL) {
+                                fprintf(f, "%d\n", scroll);
+                                fclose(f);
+                        }
+                        delwin(dialog);
+                        fprintf(stderr, "%s\n", items[(scroll + choice) * 2]);
+                        switch (key) {
+                        case 's':
+                                return 3;
+                        case 'y':
+                                return 3;
+                        case 'n':
+                                return 4;
+                        case 'm':
+                                return 5;
+                        case ' ':
+                                return 6;
+                        case '/':
+                                return 7;
+                        }
+                        return 0;
+                case 'h':
+                case '?':
+                        button = 2;
+                case '\n':
+                        delwin(dialog);
+                        if (button == 2)
+                                fprintf(stderr, "%s \"%s\"\n",
+                                        items[(scroll + choice) * 2],
+                                        items[(scroll + choice) * 2 + 1] +
+                                        first_alpha(items [(scroll + choice) * 2 + 1], ""));
+                        else
+                                fprintf(stderr, "%s\n",
+                                        items[(scroll + choice) * 2]);
+
+                        remove("lxdialog.scrltmp");
+                        return button;
+                case 'e':
+                case 'x':
+                        key = ESC;
+                case ESC:
+                        break;
+                }
+        }
+
+        delwin(dialog);
+        remove("lxdialog.scrltmp");
+        return -1;              /* ESC pressed */
+}