Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / core / menu.c

diff --git a/qemu/roms/ipxe/src/core/menu.c b/qemu/roms/ipxe/src/core/menu.c
new file mode 100644 (file)
index 0000000..8d42e1f
--- /dev/null
+++ b/qemu/roms/ipxe/src/core/menu.c
@@ -0,0 +1,178 @@
+/*
+ * Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * 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 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., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/** @file
+ *
+ * Menu selection
+ *
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <ipxe/list.h>
+#include <ipxe/menu.h>
+
+/** List of all menus */
+static LIST_HEAD ( menus );
+
+/**
+ * Create menu
+ *
+ * @v name             Menu name, or NULL
+ * @v title            Menu title, or NULL
+ * @ret menu           Menu, or NULL on failure
+ */
+struct menu * create_menu ( const char *name, const char *title ) {
+       size_t name_len;
+       size_t title_len;
+       size_t len;
+       struct menu *menu;
+       char *name_copy;
+       char *title_copy;
+
+       /* Destroy any existing menu of this name */
+       menu = find_menu ( name );
+       if ( menu )
+               destroy_menu ( menu );
+
+       /* Use empty title if none given */
+       if ( ! title )
+               title = "";
+
+       /* Allocate menu */
+       name_len = ( name ? ( strlen ( name ) + 1 /* NUL */ ) : 0 );
+       title_len = ( strlen ( title ) + 1 /* NUL */ );
+       len = ( sizeof ( *menu ) + name_len + title_len );
+       menu = zalloc ( len );
+       if ( ! menu )
+               return NULL;
+       name_copy = ( ( void * ) ( menu + 1 ) );
+       title_copy = ( name_copy + name_len );
+
+       /* Initialise menu */
+       if ( name ) {
+               strcpy ( name_copy, name );
+               menu->name = name_copy;
+       }
+       strcpy ( title_copy, title );
+       menu->title = title_copy;
+       INIT_LIST_HEAD ( &menu->items );
+
+       /* Add to list of menus */
+       list_add_tail ( &menu->list, &menus );
+
+       DBGC ( menu, "MENU %s created with title \"%s\"\n",
+              menu->name, menu->title );
+
+       return menu;
+}
+
+/**
+ * Add menu item
+ *
+ * @v menu             Menu
+ * @v label            Label, or NULL
+ * @v text             Text, or NULL
+ * @v shortcut         Shortcut key
+ * @v is_default       Item is the default item
+ * @ret item           Menu item, or NULL on failure
+ */
+struct menu_item * add_menu_item ( struct menu *menu, const char *label,
+                                  const char *text, int shortcut,
+                                  int is_default ) {
+       size_t label_len;
+       size_t text_len;
+       size_t len;
+       struct menu_item *item;
+       char *label_copy;
+       char *text_copy;
+
+       /* Use empty text if none given */
+       if ( ! text )
+               text = "";
+
+       /* Allocate item */
+       label_len = ( label ? ( strlen ( label ) + 1 /* NUL */ ) : 0 );
+       text_len = ( strlen ( text ) + 1 /* NUL */ );
+       len = ( sizeof ( *item ) + label_len + text_len );
+       item = zalloc ( len );
+       if ( ! item )
+               return NULL;
+       label_copy = ( ( void * ) ( item + 1 ) );
+       text_copy = ( label_copy + label_len );
+
+       /* Initialise item */
+       if ( label ) {
+               strcpy ( label_copy, label );
+               item->label = label_copy;
+       }
+       strcpy ( text_copy, text );
+       item->text = text_copy;
+       item->shortcut = shortcut;
+       item->is_default = is_default;
+
+       /* Add to list of items */
+       list_add_tail ( &item->list, &menu->items );
+
+       return item;
+}
+
+/**
+ * Destroy menu
+ *
+ * @v menu             Menu
+ */
+void destroy_menu ( struct menu *menu ) {
+       struct menu_item *item;
+       struct menu_item *tmp;
+
+       /* Remove from list of menus */
+       list_del ( &menu->list );
+
+       /* Free items */
+       list_for_each_entry_safe ( item, tmp, &menu->items, list ) {
+               list_del ( &item->list );
+               free ( item );
+       }
+
+       /* Free menu */
+       free ( menu );
+}
+
+/**
+ * Find menu
+ *
+ * @v name             Menu name, or NULL
+ * @ret menu           Menu, or NULL if not found
+ */
+struct menu * find_menu ( const char *name ) {
+       struct menu *menu;
+
+       list_for_each_entry ( menu, &menus, list ) {
+               if ( ( menu->name == name ) ||
+                    ( strcmp ( menu->name, name ) == 0 ) ) {
+                       return menu;
+               }
+       }
+
+       return NULL;
+}