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| author | fishsoupisgood <github@madingley.org> | 2019-04-29 01:17:54 +0100 |
|---|---|---|
| committer | fishsoupisgood <github@madingley.org> | 2019-05-27 03:43:43 +0100 |
| commit | 3f2546b2ef55b661fd8dd69682b38992225e86f6 (patch) | |
| tree | 65ca85f13617aee1dce474596800950f266a456c /roms/ipxe/src/core/menu.c | |
| download | qemu-master.tar.gz qemu-master.tar.bz2 qemu-master.zip | |
Diffstat (limited to 'roms/ipxe/src/core/menu.c')
| -rw-r--r-- | roms/ipxe/src/core/menu.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/roms/ipxe/src/core/menu.c b/roms/ipxe/src/core/menu.c new file mode 100644 index 00000000..8d42e1f8 --- /dev/null +++ b/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; +} |