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[Glitch] Change RTL detection to rely on unicode-bidi paragraph by paragraph

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Port 1f564051b6 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>
This commit is contained in:
Eugen Rochko
2020-12-15 12:56:43 +01:00
committed by Claire
parent 6205107229
commit b0722fbc14
6 changed files with 4 additions and 59 deletions
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32
app/javascript/flavours/glitch/util/rtl.js
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@ -1,32 +0,0 @@
// U+0590 to U+05FF - Hebrew
// U+0600 to U+06FF - Arabic
// U+0700 to U+074F - Syriac
// U+0750 to U+077F - Arabic Supplement
// U+0780 to U+07BF - Thaana
// U+07C0 to U+07FF - N'Ko
// U+0800 to U+083F - Samaritan
// U+08A0 to U+08FF - Arabic Extended-A
// U+FB1D to U+FB4F - Hebrew presentation forms
// U+FB50 to U+FDFF - Arabic presentation forms A
// U+FE70 to U+FEFF - Arabic presentation forms B
const rtlChars = /[\u0590-\u083F]|[\u08A0-\u08FF]|[\uFB1D-\uFDFF]|[\uFE70-\uFEFF]/mg;
export function isRtl(text) {
if (text.length === 0) {
return false;
}
text = text.replace(/(?:^|[^\/\w])@([a-z0-9_]+(@[a-z0-9\.\-]+)?)/ig, '');
text = text.replace(/(?:^|[^\/\w])#([\S]+)/ig, '');
text = text.replace(/\s+/g, '');
text = text.replace(/(\w\S+\.\w{2,}\S*)/g, '');
const matches = text.match(rtlChars);
if (!matches) {
return false;
}
return matches.length / text.length > 0.3;
};