/* * Copyright (C) 2020-2021 Yomichan 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/>. */ /* global * JSZip * JsonSchema * MediaUtil */ class DictionaryImporter { constructor(mediaLoader, onProgress) { this._mediaLoader = mediaLoader; this._onProgress = typeof onProgress === 'function' ? onProgress : () => {}; this._progressData = null; } async importDictionary(dictionaryDatabase, archiveContent, details) { if (!dictionaryDatabase) { throw new Error('Invalid database'); } if (!dictionaryDatabase.isPrepared()) { throw new Error('Database is not ready'); } this._progressReset(); // Read archive const archive = await JSZip.loadAsync(archiveContent); // Read and validate index const indexFileName = 'index.json'; const indexFile = archive.file(indexFileName); if (!indexFile) { throw new Error('No dictionary index found in archive'); } const index = JSON.parse(await indexFile.async('string')); const indexSchema = await this._getSchema('/data/schemas/dictionary-index-schema.json'); this._validateJsonSchema(index, indexSchema, indexFileName); const dictionaryTitle = index.title; const version = index.format || index.version; if (!dictionaryTitle || !index.revision) { throw new Error('Unrecognized dictionary format'); } // Verify database is not already imported if (await dictionaryDatabase.dictionaryExists(dictionaryTitle)) { throw new Error('Dictionary is already imported'); } // Data format converters const convertTermBankEntry = (version === 1 ? this._convertTermBankEntryV1.bind(this) : this._convertTermBankEntryV3.bind(this)); const convertTermMetaBankEntry = this._convertTermMetaBankEntry.bind(this); const convertKanjiBankEntry = (version === 1 ? this._convertKanjiBankEntryV1.bind(this) : this._convertKanjiBankEntryV3.bind(this)); const convertKanjiMetaBankEntry = this._convertKanjiMetaBankEntry.bind(this); const convertTagBankEntry = this._convertTagBankEntry.bind(this); // Load schemas this._progressNextStep(0); const dataBankSchemaPaths = this._getDataBankSchemaPaths(version); const dataBankSchemas = await Promise.all(dataBankSchemaPaths.map((path) => this._getSchema(path))); // Files const termFiles = this._getArchiveFiles(archive, 'term_bank_?.json'); const termMetaFiles = this._getArchiveFiles(archive, 'term_meta_bank_?.json'); const kanjiFiles = this._getArchiveFiles(archive, 'kanji_bank_?.json'); const kanjiMetaFiles = this._getArchiveFiles(archive, 'kanji_meta_bank_?.json'); const tagFiles = this._getArchiveFiles(archive, 'tag_bank_?.json'); // Load data this._progressNextStep(termFiles.length + termMetaFiles.length + kanjiFiles.length + kanjiMetaFiles.length + tagFiles.length); const termList = await this._readFileSequence(termFiles, convertTermBankEntry, dataBankSchemas[0], dictionaryTitle); const termMetaList = await this._readFileSequence(termMetaFiles, convertTermMetaBankEntry, dataBankSchemas[1], dictionaryTitle); const kanjiList = await this._readFileSequence(kanjiFiles, convertKanjiBankEntry, dataBankSchemas[2], dictionaryTitle); const kanjiMetaList = await this._readFileSequence(kanjiMetaFiles, convertKanjiMetaBankEntry, dataBankSchemas[3], dictionaryTitle); const tagList = await this._readFileSequence(tagFiles, convertTagBankEntry, dataBankSchemas[4], dictionaryTitle); this._addOldIndexTags(index, tagList, dictionaryTitle); // Prefix wildcard support const prefixWildcardsSupported = !!details.prefixWildcardsSupported; if (prefixWildcardsSupported) { for (const entry of termList) { entry.expressionReverse = stringReverse(entry.expression); entry.readingReverse = stringReverse(entry.reading); } } // Extended data support this._progressNextStep(termList.length); const formatProgressInterval = 1000; const requirements = []; for (let i = 0, ii = termList.length; i < ii; ++i) { const entry = termList[i]; const glossaryList = entry.glossary; for (let j = 0, jj = glossaryList.length; j < jj; ++j) { const glossary = glossaryList[j]; if (typeof glossary !== 'object' || glossary === null) { continue; } glossaryList[j] = this._formatDictionaryTermGlossaryObject(glossary, entry, requirements); } if ((i % formatProgressInterval) === 0) { this._progressData.index = i; this._progress(); } } this._progress(); // Async requirements this._progressNextStep(requirements.length); const {media} = await this._resolveAsyncRequirements(requirements, archive); // Add dictionary descriptor this._progressNextStep(termList.length + termMetaList.length + kanjiList.length + kanjiMetaList.length + tagList.length + media.length); const counts = { terms: {total: termList.length}, termMeta: this._getMetaCounts(termMetaList), kanji: {total: kanjiList.length}, kanjiMeta: this._getMetaCounts(kanjiMetaList), tagMeta: {total: tagList.length}, media: {total: media.length} }; const summary = this._createSummary(dictionaryTitle, version, index, {prefixWildcardsSupported, counts}); dictionaryDatabase.bulkAdd('dictionaries', [summary], 0, 1); // Add data const errors = []; const maxTransactionLength = 1000; const bulkAdd = async (objectStoreName, entries) => { const ii = entries.length; for (let i = 0; i < ii; i += maxTransactionLength) { const count = Math.min(maxTransactionLength, ii - i); try { await dictionaryDatabase.bulkAdd(objectStoreName, entries, i, count); } catch (e) { errors.push(e); } this._progressData.index += count; this._progress(); } }; await bulkAdd('terms', termList); await bulkAdd('termMeta', termMetaList); await bulkAdd('kanji', kanjiList); await bulkAdd('kanjiMeta', kanjiMetaList); await bulkAdd('tagMeta', tagList); await bulkAdd('media', media); this._progress(); return {result: summary, errors}; } _progressReset() { this._progressData = { stepIndex: 0, stepCount: 6, index: 0, count: 0 }; this._progress(); } _progressNextStep(count) { ++this._progressData.stepIndex; this._progressData.index = 0; this._progressData.count = count; this._progress(); } _progress() { this._onProgress(this._progressData); } _createSummary(dictionaryTitle, version, index, details) { const summary = { title: dictionaryTitle, revision: index.revision, sequenced: index.sequenced, version, importDate: Date.now() }; const {author, url, description, attribution, frequencyMode} = index; if (typeof author === 'string') { summary.author = author; } if (typeof url === 'string') { summary.url = url; } if (typeof description === 'string') { summary.description = description; } if (typeof attribution === 'string') { summary.attribution = attribution; } if (typeof frequencyMode === 'string') { summary.frequencyMode = frequencyMode; } Object.assign(summary, details); return summary; } async _getSchema(fileName) { const schema = await this._fetchJsonAsset(fileName); return new JsonSchema(schema); } _validateJsonSchema(value, schema, fileName) { try { schema.validate(value); } catch (e) { throw this._formatSchemaError(e, fileName); } } _formatSchemaError(e, fileName) { const valuePathString = this._getSchemaErrorPathString(e.valueStack, 'dictionary'); const schemaPathString = this._getSchemaErrorPathString(e.schemaStack, 'schema'); const e2 = new Error(`Dictionary has invalid data in '${fileName}' for value '${valuePathString}', validated against '${schemaPathString}': ${e.message}`); e2.data = e; return e2; } _getSchemaErrorPathString(infoList, base='') { let result = base; for (const {path} of infoList) { const pathArray = Array.isArray(path) ? path : [path]; for (const pathPart of pathArray) { if (pathPart === null) { result = base; } else { switch (typeof pathPart) { case 'string': if (result.length > 0) { result += '.'; } result += pathPart; break; case 'number': result += `[${pathPart}]`; break; } } } } return result; } _getDataBankSchemaPaths(version) { const termBank = ( version === 1 ? '/data/schemas/dictionary-term-bank-v1-schema.json' : '/data/schemas/dictionary-term-bank-v3-schema.json' ); const termMetaBank = '/data/schemas/dictionary-term-meta-bank-v3-schema.json'; const kanjiBank = ( version === 1 ? '/data/schemas/dictionary-kanji-bank-v1-schema.json' : '/data/schemas/dictionary-kanji-bank-v3-schema.json' ); const kanjiMetaBank = '/data/schemas/dictionary-kanji-meta-bank-v3-schema.json'; const tagBank = '/data/schemas/dictionary-tag-bank-v3-schema.json'; return [termBank, termMetaBank, kanjiBank, kanjiMetaBank, tagBank]; } _formatDictionaryTermGlossaryObject(data, entry, requirements) { switch (data.type) { case 'text': return data.text; case 'image': return this._formatDictionaryTermGlossaryImage(data, entry, requirements); case 'structured-content': return this._formatStructuredContent(data, entry, requirements); default: throw new Error(`Unhandled data type: ${data.type}`); } } _formatDictionaryTermGlossaryImage(data, entry, requirements) { const target = {}; requirements.push({type: 'image', target, args: [data, entry]}); return target; } _formatStructuredContent(data, entry, requirements) { const content = this._prepareStructuredContent(data.content, entry, requirements); return { type: 'structured-content', content }; } _prepareStructuredContent(content, entry, requirements) { if (typeof content === 'string' || !(typeof content === 'object' && content !== null)) { return content; } if (Array.isArray(content)) { for (let i = 0, ii = content.length; i < ii; ++i) { content[i] = this._prepareStructuredContent(content[i], entry, requirements); } return content; } const {tag} = content; switch (tag) { case 'img': return this._prepareStructuredContentImage(content, entry, requirements); } const childContent = content.content; if (typeof childContent !== 'undefined') { content.content = this._prepareStructuredContent(childContent, entry, requirements); } return content; } _prepareStructuredContentImage(content, entry, requirements) { const target = {}; requirements.push({type: 'structured-content-image', target, args: [content, entry]}); return target; } async _resolveAsyncRequirements(requirements, archive) { const media = new Map(); const context = {archive, media}; for (const requirement of requirements) { await this._resolveAsyncRequirement(context, requirement); } return { media: [...media.values()] }; } async _resolveAsyncRequirement(context, requirement) { const {type, target, args} = requirement; let result; switch (type) { case 'image': result = await this._resolveDictionaryTermGlossaryImage(context, ...args); break; case 'structured-content-image': result = await this._resolveStructuredContentImage(context, ...args); break; default: return; } Object.assign(target, result); ++this._progressData.index; this._progress(); } async _resolveDictionaryTermGlossaryImage(context, data, entry) { return await this._createImageData(context, data, entry, {type: 'image'}); } async _resolveStructuredContentImage(context, content, entry) { const {verticalAlign, sizeUnits} = content; const result = await this._createImageData(context, content, entry, {tag: 'img'}); if (typeof verticalAlign === 'string') { result.verticalAlign = verticalAlign; } if (typeof sizeUnits === 'string') { result.sizeUnits = sizeUnits; } return result; } async _createImageData(context, data, entry, attributes) { const { path, width: preferredWidth, height: preferredHeight, title, description, pixelated, imageRendering, appearance, background, collapsed, collapsible } = data; const {width, height} = await this._getImageMedia(context, path, entry); const newData = Object.assign({}, attributes, {path, width, height}); if (typeof preferredWidth === 'number') { newData.preferredWidth = preferredWidth; } if (typeof preferredHeight === 'number') { newData.preferredHeight = preferredHeight; } if (typeof title === 'string') { newData.title = title; } if (typeof description === 'string') { newData.description = description; } if (typeof pixelated === 'boolean') { newData.pixelated = pixelated; } if (typeof imageRendering === 'string') { newData.imageRendering = imageRendering; } if (typeof appearance === 'string') { newData.appearance = appearance; } if (typeof background === 'boolean') { newData.background = background; } if (typeof collapsed === 'boolean') { newData.collapsed = collapsed; } if (typeof collapsible === 'boolean') { newData.collapsible = collapsible; } return newData; } async _getImageMedia(context, path, entry) { const {media} = context; const {dictionary} = entry; const createError = (message) => { const {expression, reading} = entry; const readingSource = reading.length > 0 ? ` (${reading})`: ''; return new Error(`${message} at path ${JSON.stringify(path)} for ${expression}${readingSource} in ${dictionary}`); }; // Check if already added let mediaData = media.get(path); if (typeof mediaData !== 'undefined') { if (MediaUtil.getFileExtensionFromImageMediaType(mediaData.mediaType) === null) { throw createError('Media file is not a valid image'); } return mediaData; } // Find file in archive const file = context.archive.file(path); if (file === null) { throw createError('Could not find image'); } // Load file content let content = await file.async('arraybuffer'); const mediaType = MediaUtil.getImageMediaTypeFromFileName(path); if (mediaType === null) { throw createError('Could not determine media type for image'); } // Load image data let width; let height; try { ({content, width, height} = await this._mediaLoader.getImageDetails(content, mediaType)); } catch (e) { throw createError('Could not load image'); } // Create image data mediaData = { dictionary, path, mediaType, width, height, content }; media.set(path, mediaData); return mediaData; } async _fetchJsonAsset(url) { const response = await fetch(url, { method: 'GET', mode: 'no-cors', cache: 'default', credentials: 'omit', redirect: 'follow', referrerPolicy: 'no-referrer' }); if (!response.ok) { throw new Error(`Failed to fetch ${url}: ${response.status}`); } return await response.json(); } _convertTermBankEntryV1(entry, dictionary) { let [expression, reading, definitionTags, rules, score, ...glossary] = entry; expression = this._normalizeTermOrReading(expression); reading = this._normalizeTermOrReading(reading.length > 0 ? reading : expression); return {expression, reading, definitionTags, rules, score, glossary, dictionary}; } _convertTermBankEntryV3(entry, dictionary) { let [expression, reading, definitionTags, rules, score, glossary, sequence, termTags] = entry; expression = this._normalizeTermOrReading(expression); reading = this._normalizeTermOrReading(reading.length > 0 ? reading : expression); return {expression, reading, definitionTags, rules, score, glossary, sequence, termTags, dictionary}; } _convertTermMetaBankEntry(entry, dictionary) { const [expression, mode, data] = entry; return {expression, mode, data, dictionary}; } _convertKanjiBankEntryV1(entry, dictionary) { const [character, onyomi, kunyomi, tags, ...meanings] = entry; return {character, onyomi, kunyomi, tags, meanings, dictionary}; } _convertKanjiBankEntryV3(entry, dictionary) { const [character, onyomi, kunyomi, tags, meanings, stats] = entry; return {character, onyomi, kunyomi, tags, meanings, stats, dictionary}; } _convertKanjiMetaBankEntry(entry, dictionary) { const [character, mode, data] = entry; return {character, mode, data, dictionary}; } _convertTagBankEntry(entry, dictionary) { const [name, category, order, notes, score] = entry; return {name, category, order, notes, score, dictionary}; } _addOldIndexTags(index, results, dictionary) { const {tagMeta} = index; if (typeof tagMeta !== 'object' || tagMeta === null) { return; } for (const name of Object.keys(tagMeta)) { const {category, order, notes, score} = tagMeta[name]; results.push({name, category, order, notes, score, dictionary}); } } _getArchiveFiles(archive, fileNameFormat) { const indexPosition = fileNameFormat.indexOf('?'); const prefix = fileNameFormat.substring(0, indexPosition); const suffix = fileNameFormat.substring(indexPosition + 1); const results = []; for (let i = 1; true; ++i) { const fileName = `${prefix}${i}${suffix}`; const file = archive.file(fileName); if (!file) { break; } results.push(file); } return results; } async _readFileSequence(files, convertEntry, schema, dictionaryTitle) { const progressData = this._progressData; let count = 0; let startIndex = 0; if (typeof this._onProgress === 'function') { schema.progressInterval = 1000; schema.progress = (s) => { const index = s.getValueStackLength() > 1 ? s.getValueStackItem(1).path : 0; progressData.index = startIndex + (index / count); this._progress(); }; } const results = []; for (const file of files) { const entries = JSON.parse(await file.async('string')); count = Array.isArray(entries) ? Math.max(entries.length, 1) : 1; startIndex = progressData.index; this._progress(); this._validateJsonSchema(entries, schema, file.name); progressData.index = startIndex + 1; this._progress(); for (const entry of entries) { results.push(convertEntry(entry, dictionaryTitle)); } } return results; } _getMetaCounts(metaList) { const countsMap = new Map(); for (const {mode} of metaList) { let count = countsMap.get(mode); count = typeof count !== 'undefined' ? count + 1 : 1; countsMap.set(mode, count); } const counts = {total: metaList.length}; for (const [key, value] of countsMap.entries()) { if (Object.prototype.hasOwnProperty.call(counts, key)) { continue; } counts[key] = value; } return counts; } _normalizeTermOrReading(text) { try { return text.normalize('NFC'); } catch (e) { return text; } } }