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const std = @import("std");
const builtin = @import("builtin");
const compress = std.compress;
const mem = std.mem;
const testing = std.testing;
/// Script
pub const Script = enum {
none,
Adlam,
Ahom,
Anatolian_Hieroglyphs,
Arabic,
Armenian,
Avestan,
Balinese,
Bamum,
Bassa_Vah,
Batak,
Bengali,
Bhaiksuki,
Bopomofo,
Brahmi,
Braille,
Buginese,
Buhid,
Canadian_Aboriginal,
Carian,
Caucasian_Albanian,
Chakma,
Cham,
Cherokee,
Chorasmian,
Common,
Coptic,
Cuneiform,
Cypriot,
Cypro_Minoan,
Cyrillic,
Deseret,
Devanagari,
Dives_Akuru,
Dogra,
Duployan,
Egyptian_Hieroglyphs,
Elbasan,
Elymaic,
Ethiopic,
Georgian,
Glagolitic,
Gothic,
Grantha,
Greek,
Gujarati,
Gunjala_Gondi,
Gurmukhi,
Han,
Hangul,
Hanifi_Rohingya,
Hanunoo,
Hatran,
Hebrew,
Hiragana,
Imperial_Aramaic,
Inherited,
Inscriptional_Pahlavi,
Inscriptional_Parthian,
Javanese,
Kaithi,
Kannada,
Katakana,
Kawi,
Kayah_Li,
Kharoshthi,
Khitan_Small_Script,
Khmer,
Khojki,
Khudawadi,
Lao,
Latin,
Lepcha,
Limbu,
Linear_A,
Linear_B,
Lisu,
Lycian,
Lydian,
Mahajani,
Makasar,
Malayalam,
Mandaic,
Manichaean,
Marchen,
Masaram_Gondi,
Medefaidrin,
Meetei_Mayek,
Mende_Kikakui,
Meroitic_Cursive,
Meroitic_Hieroglyphs,
Miao,
Modi,
Mongolian,
Mro,
Multani,
Myanmar,
Nabataean,
Nag_Mundari,
Nandinagari,
New_Tai_Lue,
Newa,
Nko,
Nushu,
Nyiakeng_Puachue_Hmong,
Ogham,
Ol_Chiki,
Old_Hungarian,
Old_Italic,
Old_North_Arabian,
Old_Permic,
Old_Persian,
Old_Sogdian,
Old_South_Arabian,
Old_Turkic,
Old_Uyghur,
Oriya,
Osage,
Osmanya,
Pahawh_Hmong,
Palmyrene,
Pau_Cin_Hau,
Phags_Pa,
Phoenician,
Psalter_Pahlavi,
Rejang,
Runic,
Samaritan,
Saurashtra,
Sharada,
Shavian,
Siddham,
SignWriting,
Sinhala,
Sogdian,
Sora_Sompeng,
Soyombo,
Sundanese,
Syloti_Nagri,
Syriac,
Tagalog,
Tagbanwa,
Tai_Le,
Tai_Tham,
Tai_Viet,
Takri,
Tamil,
Tangsa,
Tangut,
Telugu,
Thaana,
Thai,
Tibetan,
Tifinagh,
Tirhuta,
Toto,
Ugaritic,
Vai,
Vithkuqi,
Wancho,
Warang_Citi,
Yezidi,
Yi,
Zanabazar_Square,
};
allocator: mem.Allocator,
s1: []u16 = undefined,
s2: []u8 = undefined,
s3: []u8 = undefined,
const Self = @This();
pub fn init(allocator: mem.Allocator) !Self {
const decompressor = compress.deflate.decompressor;
const in_bytes = @embedFile("scripts");
var in_fbs = std.io.fixedBufferStream(in_bytes);
var in_decomp = try decompressor(allocator, in_fbs.reader(), null);
defer in_decomp.deinit();
var reader = in_decomp.reader();
const endian = builtin.cpu.arch.endian();
var self = Self{ .allocator = allocator };
const s1_len: u16 = try reader.readInt(u16, endian);
self.s1 = try allocator.alloc(u16, s1_len);
errdefer allocator.free(self.s1);
for (0..s1_len) |i| self.s1[i] = try reader.readInt(u16, endian);
const s2_len: u16 = try reader.readInt(u16, endian);
self.s2 = try allocator.alloc(u8, s2_len);
errdefer allocator.free(self.s2);
_ = try reader.readAll(self.s2);
const s3_len: u16 = try reader.readInt(u8, endian);
self.s3 = try allocator.alloc(u8, s3_len);
errdefer allocator.free(self.s3);
_ = try reader.readAll(self.s3);
return self;
}
pub fn deinit(self: *const Self) void {
self.allocator.free(self.s1);
self.allocator.free(self.s2);
self.allocator.free(self.s3);
}
/// Lookup the Script type for `cp`.
pub fn script(self: Self, cp: u21) ?Script {
const byte = self.s3[self.s2[self.s1[cp >> 8] + (cp & 0xff)]];
if (byte == 0) return null;
return @enumFromInt(byte);
}
test "script" {
const self = try init(std.testing.allocator);
defer self.deinit();
try testing.expectEqual(Script.Latin, self.script('A').?);
}
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