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YuruToot/app/javascript/mastodon/rtl.js
Mostafa Ahangarha e974d4923f Exclude URLs from text analysis (#11759)
By the added regex, URLs, including the one without http or even www
like mysite.com will be removed from the toot's body so only the real
text of the toot will be analyzed for RTL detection
2019-09-04 22:30:49 +02:00

33 lines
939 B
JavaScript

// 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;
};