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//! mapping opentype tags to unicode scripts | ||
//! | ||
//! based on | ||
//! <https://github.com/fonttools/fonttools/blob/8697f91cdc/Lib/fontTools/unicodedata/OTTags.py> | ||
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use write_fonts::types::Tag; | ||
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pub(crate) const DFLT_SCRIPT: Tag = Tag::new(b"DFLT"); | ||
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pub(crate) static SCRIPT_ALIASES: &[(Tag, Tag)] = &[(Tag::new(b"jamo"), Tag::new(b"hang"))]; | ||
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pub(crate) static SCRIPT_EXCEPTIONS: &[(&str, Tag)] = &[ | ||
("Hira", Tag::new(b"kana")), | ||
("Hrkt", Tag::new(b"kana")), | ||
("Laoo", Tag::new(b"lao ")), | ||
("Nkoo", Tag::new(b"nko ")), | ||
("Vaii", Tag::new(b"vai ")), | ||
("Yiii", Tag::new(b"yi ")), | ||
("Zinh", DFLT_SCRIPT), | ||
("Zmth", Tag::new(b"math")), | ||
("Zyyy", DFLT_SCRIPT), | ||
("Zzzz", DFLT_SCRIPT), | ||
]; | ||
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// 'math' is used as a script in opentype features: | ||
// <https://github.com/harfbuzz/harfbuzz/pull/3417> | ||
pub(crate) static SCRIPT_EXCEPTIONS_REVERSED: &[(Tag, &str)] = &[(Tag::new(b"math"), "Zmth")]; | ||
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pub(crate) static NEW_SCRIPTS: &[(Tag, &str)] = &[ | ||
(Tag::new(b"bng2"), "Beng"), | ||
(Tag::new(b"dev2"), "Deva"), | ||
(Tag::new(b"gjr2"), "Gujr"), | ||
(Tag::new(b"gur2"), "Guru"), | ||
(Tag::new(b"knd2"), "Knda"), | ||
(Tag::new(b"mlm2"), "Mlym"), | ||
(Tag::new(b"mym2"), "Mymr"), | ||
(Tag::new(b"ory2"), "Orya"), | ||
(Tag::new(b"tel2"), "Telu"), | ||
(Tag::new(b"tml2"), "Taml"), | ||
]; | ||
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pub(crate) static NEW_SCRIPT_TAGS: &[(&str, Tag)] = &[ | ||
("Beng", Tag::new(b"bng2")), | ||
("Deva", Tag::new(b"dev2")), | ||
("Gujr", Tag::new(b"gjr2")), | ||
("Guru", Tag::new(b"gur2")), | ||
("Kana", Tag::new(b"knd2")), | ||
("Mlym", Tag::new(b"mlm2")), | ||
("Mymr", Tag::new(b"mym2")), | ||
("Orya", Tag::new(b"ory2")), | ||
("Taml", Tag::new(b"tml2")), | ||
("Telu", Tag::new(b"tel2")), | ||
]; | ||
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pub(crate) static INDIC_SCRIPTS: &[&str] = &[ | ||
"Beng", // Bengali | ||
"Deva", // Devanagari | ||
"Gujr", // Gujarati | ||
"Guru", // Gurmukhi | ||
"Knda", // Kannada | ||
"Mlym", // Malayalam | ||
"Orya", // Oriya | ||
"Sinh", // Sinhala | ||
"Taml", // Tamil | ||
"Telu", // Telugu | ||
]; | ||
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pub(crate) static USE_SCRIPTS: &[&str] = &[ | ||
// Correct as at Unicode 15.0 | ||
"Adlm", // Adlam | ||
"Ahom", // Ahom | ||
"Bali", // Balinese | ||
"Batk", // Batak | ||
"Brah", // Brahmi | ||
"Bugi", // Buginese | ||
"Buhd", // Buhid | ||
"Cakm", // Chakma | ||
"Cham", // Cham | ||
"Chrs", // Chorasmian | ||
"Cpmn", // Cypro Minoan | ||
"Diak", // Dives Akuru | ||
"Dogr", // Dogra | ||
"Dupl", // Duployan | ||
"Egyp", // Egyptian Hieroglyphs | ||
"Elym", // Elymaic | ||
"Gong", // Gunjala Gondi | ||
"Gonm", // Masaram Gondi | ||
"Gran", // Grantha | ||
"Hano", // Hanunoo | ||
"Hmng", // Pahawh Hmong | ||
"Hmnp", // Nyiakeng Puachue Hmong | ||
"Java", // Javanese | ||
"Kali", // Kayah Li | ||
"Kawi", // Kawi | ||
"Khar", // Kharosthi | ||
"Khoj", // Khojki | ||
"Kits", // Khitan Small Script | ||
"Kthi", // Kaithi | ||
"Lana", // Tai Tham | ||
"Lepc", // Lepcha | ||
"Limb", // Limbu | ||
"Mahj", // Mahajani | ||
"Maka", // Makasar | ||
"Mand", // Mandaic | ||
"Mani", // Manichaean | ||
"Marc", // Marchen | ||
"Medf", // Medefaidrin | ||
"Modi", // Modi | ||
"Mong", // Mongolian | ||
"Mtei", // Meetei Mayek | ||
"Mult", // Multani | ||
"Nagm", // Nag Mundari | ||
"Nand", // Nandinagari | ||
"Newa", // Newa | ||
"Nhks", // Bhaiksuki | ||
"Nko ", // Nko | ||
"Ougr", // Old Uyghur | ||
"Phag", // Phags Pa | ||
"Phlp", // Psalter Pahlavi | ||
"Plrd", // Miao | ||
"Rjng", // Rejang | ||
"Rohg", // Hanifi Rohingya | ||
"Saur", // Saurashtra | ||
"Shrd", // Sharada | ||
"Sidd", // Siddham | ||
"Sind", // Khudawadi | ||
"Sogd", // Sogdian | ||
"Sogo", // Old Sogdian | ||
"Soyo", // Soyombo | ||
"Sund", // Sundanese | ||
"Sylo", // Syloti Nagri | ||
"Tagb", // Tagbanwa | ||
"Takr", // Takri | ||
"Tale", // Tai Le | ||
"Tavt", // Tai Viet | ||
"Tfng", // Tifinagh | ||
"Tglg", // Tagalog | ||
"Tibt", // Tibetan | ||
"Tirh", // Tirhuta | ||
"Tnsa", // Tangsa | ||
"Toto", // Toto | ||
"Vith", // Vithkuqi | ||
"Wcho", // Wancho | ||
"Yezi", // Yezidi | ||
"Zanb", // Zanabazar Square | ||
]; | ||
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#[cfg(test)] | ||
mod tests { | ||
use super::*; | ||
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/// we want to binary search these, so let's enforce that they are sorted, | ||
/// to avoid future headaches | ||
#[test] | ||
fn const_arrays_are_sorted() { | ||
fn get_original_and_sorted_items<T: Clone + Ord + Eq, U>( | ||
items: &[(T, U)], | ||
) -> (Vec<T>, Vec<T>) { | ||
let originals = items.iter().map(|(a, _)| a.clone()).collect::<Vec<_>>(); | ||
let mut sorted = originals.clone(); | ||
sorted.sort(); | ||
(originals, sorted) | ||
} | ||
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let (actual, expected) = get_original_and_sorted_items(SCRIPT_ALIASES); | ||
assert_eq!(actual, expected); | ||
let (actual, expected) = get_original_and_sorted_items(SCRIPT_EXCEPTIONS_REVERSED); | ||
assert_eq!(actual, expected); | ||
let (actual, expected) = get_original_and_sorted_items(NEW_SCRIPTS); | ||
assert_eq!(actual, expected); | ||
let (actual, expected) = get_original_and_sorted_items(NEW_SCRIPT_TAGS); | ||
assert_eq!(actual, expected); | ||
let (actual, expected) = get_original_and_sorted_items(SCRIPT_EXCEPTIONS); | ||
assert_eq!(actual, expected); | ||
} | ||
} |
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