kconfig: move lxdialog to scripts/kconfig/lxdialog

The only lxdialog user i kconfig - for menuconfig.
So move it to reflect this.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

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 */
+}