1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
/*
* 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.
*
* You can also choose to distribute this program under the terms of
* the Unmodified Binary Distribution Licence (as given in the file
* COPYING.UBDL), provided that you have satisfied its requirements.
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
/** @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;
}
|
