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37 lines
1.4 KiB
JavaScript
37 lines
1.4 KiB
JavaScript
/*
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* Copyright (C) 2024-2025 Yomitan Authors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import {isStringPartiallyJapanese} from './ja/japanese.js';
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import {isStringPartiallyChinese} from './zh/chinese.js';
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/**
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* Returns the language that the string might be by using some heuristic checks.
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* Values returned are ISO codes. `null` is returned if no language can be determined.
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* @param {string} text
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* @param {?string} language
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* @returns {?string}
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*/
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export function getLanguageFromText(text, language) {
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const partiallyJapanese = isStringPartiallyJapanese(text);
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const partiallyChinese = isStringPartiallyChinese(text);
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if (!['zh', 'yue'].includes(language ?? '')) {
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if (partiallyJapanese) { return 'ja'; }
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if (partiallyChinese) { return 'zh'; }
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}
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return language;
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}
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