1const uefi = @import("std").os.uefi;
 2const Guid = uefi.Guid;
 3
 4pub const Handle = *opaque {};
 5
 6/// The header found at the start of each package.
 7pub const PackageHeader = packed struct(u32) {
 8    length: u24,
 9    type: u8,
10
11    pub const type_all: u8 = 0x0;
12    pub const type_guid: u8 = 0x1;
13    pub const forms: u8 = 0x2;
14    pub const strings: u8 = 0x4;
15    pub const fonts: u8 = 0x5;
16    pub const images: u8 = 0x6;
17    pub const simple_fonsts: u8 = 0x7;
18    pub const device_path: u8 = 0x8;
19    pub const keyboard_layout: u8 = 0x9;
20    pub const animations: u8 = 0xa;
21    pub const end: u8 = 0xdf;
22    pub const type_system_begin: u8 = 0xe0;
23    pub const type_system_end: u8 = 0xff;
24};
25
26/// The header found at the start of each package list.
27pub const PackageList = extern struct {
28    package_list_guid: Guid,
29
30    /// The size of the package list (in bytes), including the header.
31    package_list_length: u32,
32
33    // TODO implement iterator
34};
35
36pub const SimplifiedFontPackage = extern struct {
37    header: PackageHeader,
38    number_of_narrow_glyphs: u16,
39    number_of_wide_glyphs: u16,
40
41    pub fn getNarrowGlyphs(self: *SimplifiedFontPackage) []NarrowGlyph {
42        return @as([*]NarrowGlyph, @ptrCast(@alignCast(@as([*]u8, @ptrCast(self)) + @sizeOf(SimplifiedFontPackage))))[0..self.number_of_narrow_glyphs];
43    }
44};
45
46pub const NarrowGlyphAttributes = packed struct(u8) {
47    non_spacing: bool,
48    wide: bool,
49    _pad: u6 = 0,
50};
51
52pub const NarrowGlyph = extern struct {
53    unicode_weight: u16,
54    attributes: NarrowGlyphAttributes,
55    glyph_col_1: [19]u8,
56};
57
58pub const WideGlyphAttributes = packed struct(u8) {
59    non_spacing: bool,
60    wide: bool,
61    _pad: u6 = 0,
62};
63
64pub const WideGlyph = extern struct {
65    unicode_weight: u16,
66    attributes: WideGlyphAttributes,
67    glyph_col_1: [19]u8,
68    glyph_col_2: [19]u8,
69    _pad: [3]u8 = [_]u8{0} ** 3,
70};
71
72pub const StringPackage = extern struct {
73    header: PackageHeader,
74    hdr_size: u32,
75    string_info_offset: u32,
76    language_window: [16]u16,
77    language_name: u16,
78    language: [3]u8,
79};