menuconfig: Add Save/Load buttons

If menuconfig have Save/Load button like alternative
.config editors, xconfig, nconfig, etc.We will have
a obvious benefit when use menuconfig just like
when we use others, we can Save/Load our .config quickly
and conveniently.

This patch add the Save/Load button for menuconfig.

[remove trailing space while at it for below line:
"*)  Formerly when I used Page Down and Page Up, the cursor would be set"
]

Changes:
V1-V2:
1:use PATH_MAX instead of hard code suggested by Yann E. MORIN
2:drop the spurious empty-line removal suggested by Yann E. MORIN
V2-V3:
1:ajust buttons position well centered reported by Yann E. MORIN

Signed-off-by: Wang YanQing <udknight@gmail.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Tested-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

1 files changed, 11 insertions, 9 deletions

diff --git a/scripts/kconfig/lxdialog/menubox.c b/scripts/kconfig/lxdialog/menubox.c
index 1d604738fa13..48d382e7e374 100644
--- a/scripts/kconfig/lxdialog/menubox.c
+++ b/scripts/kconfig/lxdialog/menubox.c
@@ -26,7 +26,7 @@
  *
  *    *)  A bugfix for the Page-Down problem
  *
- *    *)  Formerly when I used Page Down and Page Up, the cursor would be set 
+ *    *)  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).
@@ -154,12 +154,14 @@ static void print_arrows(WINDOW * win, int item_no, int scroll, int y, int x,
  */
 static void print_buttons(WINDOW * win, int height, int width, int selected)
 {
-        int x = width / 2 - 16;
+        int x = width / 2 - 28;
         int y = height - 2;
 
         print_button(win, gettext("Select"), y, x, selected == 0);
         print_button(win, gettext(" Exit "), y, x + 12, selected == 1);
         print_button(win, gettext(" Help "), y, x + 24, selected == 2);
+        print_button(win, gettext(" Save "), y, x + 36, selected == 3);
+        print_button(win, gettext(" Load "), y, x + 48, selected == 4);
 
         wmove(win, y, x + 1 + 12 * selected);
         wrefresh(win);
@@ -372,7 +374,7 @@ do_resize:
                 case TAB:
                 case KEY_RIGHT:
                         button = ((key == KEY_LEFT ? --button : ++button) < 0)
-                            ? 2 : (button > 2 ? 0 : button);
+                            ? 4 : (button > 4 ? 0 : button);
 
                         print_buttons(dialog, height, width, button);
                         wrefresh(menu);
@@ -399,17 +401,17 @@ do_resize:
                                 return 2;
                         case 's':
                         case 'y':
-                                return 3;
+                                return 5;
                         case 'n':
-                                return 4;
+                                return 6;
                         case 'm':
-                                return 5;
+                                return 7;
                         case ' ':
-                                return 6;
+                                return 8;
                         case '/':
-                                return 7;
+                                return 9;
                         case 'z':
-                                return 8;
+                                return 10;
                         case '\n':
                                 return button;
                         }