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32 lines
939 B
32 lines
939 B
// U+0590 to U+05FF - Hebrew
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// U+0600 to U+06FF - Arabic
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// U+0700 to U+074F - Syriac
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// U+0750 to U+077F - Arabic Supplement
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// U+0780 to U+07BF - Thaana
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// U+07C0 to U+07FF - N'Ko
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// U+0800 to U+083F - Samaritan
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// U+08A0 to U+08FF - Arabic Extended-A
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// U+FB1D to U+FB4F - Hebrew presentation forms
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// U+FB50 to U+FDFF - Arabic presentation forms A
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// U+FE70 to U+FEFF - Arabic presentation forms B
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const rtlChars = /[\u0590-\u083F]|[\u08A0-\u08FF]|[\uFB1D-\uFDFF]|[\uFE70-\uFEFF]/mg;
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export function isRtl(text) {
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if (text.length === 0) {
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return false;
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}
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text = text.replace(/(?:^|[^\/\w])@([a-z0-9_]+(@[a-z0-9\.\-]+)?)/ig, '');
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text = text.replace(/(?:^|[^\/\w])#([\S]+)/ig, '');
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text = text.replace(/\s+/g, '');
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text = text.replace(/(\w\S+\.\w{2,}\S*)/g, '');
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const matches = text.match(rtlChars);
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if (!matches) {
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return false;
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}
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return matches.length / text.length > 0.3;
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};
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