wehub-resource-sync
52 lines
2.3 KiB
TypeScript
52 lines
2.3 KiB
TypeScript
const LANGUAGE_HINTS: Record<string, RegExp[]> = {
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"pt-BR": [/\b(?:voce|você|preciso|arquivo|codigo|código|erro|falha|obrigado)\b/i],
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// NOTE: English-ambiguous words are intentionally excluded — "error" (es) and
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// "configuration" (fr) are identical in English and would misclassify English text.
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// Spanish/French keep their distinctive native spellings (fallo / erreur, etc).
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es: [/\b(?:necesito|archivo|codigo|código|fallo|gracias|puedes)\b/i],
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de: [/\b(?:ich|datei|fehler|bitte|kannst|konfiguration|danke)\b/i],
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fr: [/\b(?:fichier|erreur|merci|peux|besoin)\b/i],
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ja: [/[\u3040-\u30ff]/],
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id: [/\b(?:saya|kamu|anda|dengan|untuk|yang|tidak|bisa|terima\s+kasih|dari)\b/i],
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};
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/**
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* Score each language by the NUMBER of native-keyword hits and pick the highest
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* (English-ambiguous words are excluded from the hint lists, so a lone shared word
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* never misclassifies English). Highest score wins; ties keep the earlier language;
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* zero hits → English. (B-LANG-DETECTOR)
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*/
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export function detectCompressionLanguage(text: string): string {
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// CJK disambiguation: Han ideographs (U+4E00–U+9FFF) are shared by Chinese and Japanese, but
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// kana (U+3040–U+30FF) is Japanese-exclusive. Text with Han and no kana is Chinese (zh); text
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// with kana falls through to the scorer below, where the `ja` kana hint catches it. Keeping zh
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// out of the additive scorer means a Han-heavy Japanese sentence is never misread as Chinese.
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if (/[一-鿿]/.test(text) && !/[-ヿ]/.test(text)) {
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return "zh";
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}
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let best = "en";
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let bestScore = 0;
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for (const [language, patterns] of Object.entries(LANGUAGE_HINTS)) {
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let score = 0;
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for (const pattern of patterns) {
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const global = pattern.flags.includes("g")
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? pattern
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: new RegExp(pattern.source, pattern.flags + "g");
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const matches = text.match(global);
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if (matches) score += matches.length;
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}
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if (score > bestScore) {
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bestScore = score;
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best = language;
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}
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}
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return best;
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}
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export function listSupportedCompressionLanguages(): string[] {
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// zh is detected via the CJK Han/kana disambiguation in detectCompressionLanguage rather than a
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// keyword hint (so it stays out of the additive scorer), hence it is listed explicitly here.
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return ["en", "zh", ...Object.keys(LANGUAGE_HINTS)];
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}
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