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Pop-up dictionary browser extension for language learning. Successor to Yomichan. (PERSONAL FORK)
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JavaScript
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111/* * Copyright (C) 2024-2025 Yomitan Authors * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <https://www.gnu.org/licenses/>. */
import {BlobWriter, TextReader, TextWriter, Uint8ArrayReader, ZipReader, ZipWriter} from '@zip.js/zip.js';import {readFileSync, readdirSync} from 'fs';import {join} from 'path';import {parseJson} from './json.js';
/** * Creates a zip archive from the given dictionary directory. * @param {string} dictionaryDirectory * @param {string} [dictionaryName] * @returns {Promise<ArrayBuffer>} */export async function createDictionaryArchiveData(dictionaryDirectory, dictionaryName) { const fileNames = readdirSync(dictionaryDirectory); const zipFileWriter = new BlobWriter(); // Level 0 compression used since decompression in the node environment is not supported. // See dev/lib/zip.js for more details. const zipWriter = new ZipWriter(zipFileWriter, { level: 0, }); for (const fileName of fileNames) { if (/\.json$/.test(fileName)) { const content = readFileSync(join(dictionaryDirectory, fileName), {encoding: 'utf8'}); /** @type {import('dictionary-data').Index} */ const json = parseJson(content); if (fileName === 'index.json' && typeof dictionaryName === 'string') { json.title = dictionaryName; } await zipWriter.add(fileName, new TextReader(JSON.stringify(json, null, 0))); } else { const content = readFileSync(join(dictionaryDirectory, fileName), {encoding: null}); await zipWriter.add(fileName, new Blob([content]).stream()); } } const blob = await zipWriter.close(); return await blob.arrayBuffer();}
/** * @param {import('@zip.js/zip.js').Entry} entry * @returns {Promise<string>} */export async function readArchiveEntryDataString(entry) { if (typeof entry.getData === 'undefined') { throw new Error('Cannot get index data'); } return await entry.getData(new TextWriter());}
/** * @template [T=unknown] * @param {import('@zip.js/zip.js').Entry} entry * @returns {Promise<T>} */export async function readArchiveEntryDataJson(entry) { const indexContent = await readArchiveEntryDataString(entry); return parseJson(indexContent);}
/** * @param {ArrayBuffer} data * @returns {Promise<import('@zip.js/zip.js').Entry[]>} */export async function getDictionaryArchiveEntries(data) { const zipFileReader = new Uint8ArrayReader(new Uint8Array(data)); const zipReader = new ZipReader(zipFileReader); return await zipReader.getEntries();}
/** * @template T * @param {import('@zip.js/zip.js').Entry[]} entries * @param {string} fileName * @returns {Promise<T>} */export async function getDictionaryArchiveJson(entries, fileName) { const entry = entries.find((item) => item.filename === fileName); if (typeof entry === 'undefined') { throw new Error(`File not found: ${fileName}`); } return await readArchiveEntryDataJson(entry);}
/** * @returns {string} */export function getIndexFileName() { return 'index.json';}
/** * @param {ArrayBuffer} data * @returns {Promise<import('dictionary-data').Index>} */export async function getDictionaryArchiveIndex(data) { const entries = await getDictionaryArchiveEntries(data); return await getDictionaryArchiveJson(entries, getIndexFileName());}