826 lines
28 KiB
JavaScript
826 lines
28 KiB
JavaScript
/*
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* Copyright (C) 2016-2017 Alex Yatskov <alex@foosoft.net>
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* Author: Alex Yatskov <alex@foosoft.net>
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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 <http://www.gnu.org/licenses/>.
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*/
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class Database {
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constructor() {
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this.db = null;
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}
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async prepare() {
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if (this.db !== null) {
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throw new Error('Database already initialized');
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}
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try {
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this.db = await Database.open('dict', 4, (db, transaction, oldVersion) => {
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Database.upgrade(db, transaction, oldVersion, [
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{
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version: 2,
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stores: {
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terms: {
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primaryKey: {keyPath: 'id', autoIncrement: true},
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indices: ['dictionary', 'expression', 'reading']
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},
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kanji: {
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primaryKey: {autoIncrement: true},
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indices: ['dictionary', 'character']
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},
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tagMeta: {
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primaryKey: {autoIncrement: true},
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indices: ['dictionary']
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},
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dictionaries: {
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primaryKey: {autoIncrement: true},
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indices: ['title', 'version']
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}
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}
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},
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{
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version: 3,
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stores: {
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termMeta: {
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primaryKey: {autoIncrement: true},
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indices: ['dictionary', 'expression']
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},
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kanjiMeta: {
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primaryKey: {autoIncrement: true},
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indices: ['dictionary', 'character']
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},
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tagMeta: {
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primaryKey: {autoIncrement: true},
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indices: ['dictionary', 'name']
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}
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}
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},
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{
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version: 4,
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stores: {
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terms: {
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primaryKey: {keyPath: 'id', autoIncrement: true},
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indices: ['dictionary', 'expression', 'reading', 'sequence']
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}
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}
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}
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]);
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});
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return true;
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} catch (e) {
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console.error(e);
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return false;
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}
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}
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async purge() {
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this.validate();
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this.db.close();
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await Database.deleteDatabase(this.db.name);
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this.db = null;
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await this.prepare();
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}
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async deleteDictionary(dictionaryName, onProgress, progressSettings) {
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this.validate();
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const targets = [
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['dictionaries', 'title'],
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['kanji', 'dictionary'],
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['kanjiMeta', 'dictionary'],
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['terms', 'dictionary'],
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['termMeta', 'dictionary'],
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['tagMeta', 'dictionary']
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];
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const promises = [];
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const progressData = {
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count: 0,
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processed: 0,
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storeCount: targets.length,
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storesProcesed: 0
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};
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let progressRate = (typeof progressSettings === 'object' && progressSettings !== null ? progressSettings.rate : 0);
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if (typeof progressRate !== 'number' || progressRate <= 0) {
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progressRate = 1000;
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}
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for (const [objectStoreName, index] of targets) {
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const dbTransaction = this.db.transaction([objectStoreName], 'readwrite');
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const dbObjectStore = dbTransaction.objectStore(objectStoreName);
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const dbIndex = dbObjectStore.index(index);
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const only = IDBKeyRange.only(dictionaryName);
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promises.push(Database.deleteValues(dbObjectStore, dbIndex, only, onProgress, progressData, progressRate));
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}
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await Promise.all(promises);
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}
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async findTermsBulk(termList, titles) {
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this.validate();
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const promises = [];
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const visited = {};
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const results = [];
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const processRow = (row, index) => {
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if (titles.includes(row.dictionary) && !visited.hasOwnProperty(row.id)) {
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visited[row.id] = true;
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results.push(Database.createTerm(row, index));
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}
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};
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const dbTransaction = this.db.transaction(['terms'], 'readonly');
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const dbTerms = dbTransaction.objectStore('terms');
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const dbIndex1 = dbTerms.index('expression');
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const dbIndex2 = dbTerms.index('reading');
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for (let i = 0; i < termList.length; ++i) {
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const only = IDBKeyRange.only(termList[i]);
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promises.push(
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Database.getAll(dbIndex1, only, i, processRow),
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Database.getAll(dbIndex2, only, i, processRow)
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);
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}
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await Promise.all(promises);
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return results;
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}
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async findTermsExactBulk(termList, readingList, titles) {
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this.validate();
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const promises = [];
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const results = [];
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const processRow = (row, index) => {
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if (row.reading === readingList[index] && titles.includes(row.dictionary)) {
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results.push(Database.createTerm(row, index));
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}
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};
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const dbTransaction = this.db.transaction(['terms'], 'readonly');
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const dbTerms = dbTransaction.objectStore('terms');
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const dbIndex = dbTerms.index('expression');
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for (let i = 0; i < termList.length; ++i) {
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const only = IDBKeyRange.only(termList[i]);
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promises.push(Database.getAll(dbIndex, only, i, processRow));
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}
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await Promise.all(promises);
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return results;
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}
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async findTermsBySequenceBulk(sequenceList, mainDictionary) {
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this.validate();
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const promises = [];
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const results = [];
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const processRow = (row, index) => {
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if (row.dictionary === mainDictionary) {
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results.push(Database.createTerm(row, index));
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}
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};
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const dbTransaction = this.db.transaction(['terms'], 'readonly');
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const dbTerms = dbTransaction.objectStore('terms');
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const dbIndex = dbTerms.index('sequence');
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for (let i = 0; i < sequenceList.length; ++i) {
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const only = IDBKeyRange.only(sequenceList[i]);
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promises.push(Database.getAll(dbIndex, only, i, processRow));
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}
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await Promise.all(promises);
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return results;
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}
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async findTermMetaBulk(termList, titles) {
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return this.findGenericBulk('termMeta', 'expression', termList, titles, Database.createMeta);
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}
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async findKanjiBulk(kanjiList, titles) {
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return this.findGenericBulk('kanji', 'character', kanjiList, titles, Database.createKanji);
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}
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async findKanjiMetaBulk(kanjiList, titles) {
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return this.findGenericBulk('kanjiMeta', 'character', kanjiList, titles, Database.createMeta);
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}
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async findGenericBulk(tableName, indexName, indexValueList, titles, createResult) {
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this.validate();
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const promises = [];
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const results = [];
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const processRow = (row, index) => {
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if (titles.includes(row.dictionary)) {
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results.push(createResult(row, index));
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}
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};
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const dbTransaction = this.db.transaction([tableName], 'readonly');
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const dbTerms = dbTransaction.objectStore(tableName);
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const dbIndex = dbTerms.index(indexName);
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for (let i = 0; i < indexValueList.length; ++i) {
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const only = IDBKeyRange.only(indexValueList[i]);
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promises.push(Database.getAll(dbIndex, only, i, processRow));
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}
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await Promise.all(promises);
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return results;
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}
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async findTagForTitle(name, title) {
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this.validate();
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let result = null;
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const dbTransaction = this.db.transaction(['tagMeta'], 'readonly');
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const dbTerms = dbTransaction.objectStore('tagMeta');
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const dbIndex = dbTerms.index('name');
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const only = IDBKeyRange.only(name);
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await Database.getAll(dbIndex, only, null, row => {
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if (title === row.dictionary) {
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result = row;
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}
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});
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return result;
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}
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async getDictionaryInfo() {
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this.validate();
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const results = [];
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const dbTransaction = this.db.transaction(['dictionaries'], 'readonly');
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const dbDictionaries = dbTransaction.objectStore('dictionaries');
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await Database.getAll(dbDictionaries, null, null, info => results.push(info));
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return results;
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}
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async getDictionaryCounts(dictionaryNames, getTotal) {
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this.validate();
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const objectStoreNames = [
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'kanji',
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'kanjiMeta',
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'terms',
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'termMeta',
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'tagMeta'
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];
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const dbCountTransaction = this.db.transaction(objectStoreNames, 'readonly');
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const targets = [];
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for (const objectStoreName of objectStoreNames) {
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targets.push([
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objectStoreName,
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dbCountTransaction.objectStore(objectStoreName).index('dictionary')
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]);
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}
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// Query is required for Edge, otherwise index.count throws an exception.
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const query1 = IDBKeyRange.lowerBound('', false);
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const totalPromise = getTotal ? Database.getCounts(targets, query1) : null;
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const counts = [];
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const countPromises = [];
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for (let i = 0; i < dictionaryNames.length; ++i) {
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counts.push(null);
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const index = i;
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const query2 = IDBKeyRange.only(dictionaryNames[i]);
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const countPromise = Database.getCounts(targets, query2).then(v => counts[index] = v);
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countPromises.push(countPromise);
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}
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await Promise.all(countPromises);
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const result = {counts};
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if (totalPromise !== null) {
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result.total = await totalPromise;
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}
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return result;
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}
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async importDictionary(archive, progressCallback, exceptions) {
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this.validate();
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const maxTransactionLength = 1000;
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const bulkAdd = async (objectStoreName, items, total, current) => {
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const db = this.db;
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for (let i = 0; i < items.length; i += maxTransactionLength) {
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if (progressCallback) {
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progressCallback(total, current + i / items.length);
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}
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try {
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const count = Math.min(maxTransactionLength, items.length - i);
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const transaction = db.transaction([objectStoreName], 'readwrite');
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const objectStore = transaction.objectStore(objectStoreName);
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await Database.bulkAdd(objectStore, items, i, count);
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} catch (e) {
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if (exceptions) {
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exceptions.push(e);
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} else {
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throw e;
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}
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}
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}
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};
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const indexDataLoaded = async summary => {
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if (summary.version > 3) {
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throw new Error('Unsupported dictionary version');
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}
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const db = this.db;
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const dbCountTransaction = db.transaction(['dictionaries'], 'readonly');
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const dbIndex = dbCountTransaction.objectStore('dictionaries').index('title');
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const only = IDBKeyRange.only(summary.title);
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const count = await Database.getCount(dbIndex, only);
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if (count > 0) {
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throw new Error('Dictionary is already imported');
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}
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const transaction = db.transaction(['dictionaries'], 'readwrite');
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const objectStore = transaction.objectStore('dictionaries');
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await Database.bulkAdd(objectStore, [summary], 0, 1);
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};
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const termDataLoaded = async (summary, entries, total, current) => {
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const rows = [];
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if (summary.version === 1) {
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for (const [expression, reading, definitionTags, rules, score, ...glossary] of entries) {
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rows.push({
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expression,
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reading,
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definitionTags,
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rules,
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score,
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glossary,
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dictionary: summary.title
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});
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}
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} else {
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for (const [expression, reading, definitionTags, rules, score, glossary, sequence, termTags] of entries) {
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rows.push({
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expression,
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reading,
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definitionTags,
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rules,
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score,
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glossary,
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sequence,
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termTags,
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dictionary: summary.title
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});
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}
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}
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await bulkAdd('terms', rows, total, current);
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};
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const termMetaDataLoaded = async (summary, entries, total, current) => {
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const rows = [];
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for (const [expression, mode, data] of entries) {
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rows.push({
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expression,
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mode,
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data,
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dictionary: summary.title
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});
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}
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await bulkAdd('termMeta', rows, total, current);
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};
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const kanjiDataLoaded = async (summary, entries, total, current) => {
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const rows = [];
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if (summary.version === 1) {
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for (const [character, onyomi, kunyomi, tags, ...meanings] of entries) {
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rows.push({
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character,
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onyomi,
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kunyomi,
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tags,
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meanings,
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dictionary: summary.title
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});
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}
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} else {
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for (const [character, onyomi, kunyomi, tags, meanings, stats] of entries) {
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rows.push({
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character,
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onyomi,
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kunyomi,
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tags,
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meanings,
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stats,
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dictionary: summary.title
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});
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}
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}
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await bulkAdd('kanji', rows, total, current);
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};
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const kanjiMetaDataLoaded = async (summary, entries, total, current) => {
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const rows = [];
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for (const [character, mode, data] of entries) {
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rows.push({
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character,
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mode,
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data,
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dictionary: summary.title
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});
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}
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await bulkAdd('kanjiMeta', rows, total, current);
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};
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const tagDataLoaded = async (summary, entries, total, current) => {
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const rows = [];
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for (const [name, category, order, notes, score] of entries) {
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const row = dictTagSanitize({
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name,
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category,
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order,
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notes,
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score,
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dictionary: summary.title
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});
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rows.push(row);
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}
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await bulkAdd('tagMeta', rows, total, current);
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};
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return await Database.importDictionaryZip(
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archive,
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indexDataLoaded,
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termDataLoaded,
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termMetaDataLoaded,
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kanjiDataLoaded,
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kanjiMetaDataLoaded,
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tagDataLoaded
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);
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}
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validate() {
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if (this.db === null) {
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throw new Error('Database not initialized');
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}
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}
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static async importDictionaryZip(
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archive,
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indexDataLoaded,
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termDataLoaded,
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termMetaDataLoaded,
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kanjiDataLoaded,
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kanjiMetaDataLoaded,
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tagDataLoaded
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) {
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const zip = await JSZip.loadAsync(archive);
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const indexFile = zip.files['index.json'];
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if (!indexFile) {
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throw new Error('No dictionary index found in archive');
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}
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const index = JSON.parse(await indexFile.async('string'));
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if (!index.title || !index.revision) {
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throw new Error('Unrecognized dictionary format');
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}
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const summary = {
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title: index.title,
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revision: index.revision,
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sequenced: index.sequenced,
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version: index.format || index.version
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};
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await indexDataLoaded(summary);
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const buildTermBankName = index => `term_bank_${index + 1}.json`;
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const buildTermMetaBankName = index => `term_meta_bank_${index + 1}.json`;
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const buildKanjiBankName = index => `kanji_bank_${index + 1}.json`;
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const buildKanjiMetaBankName = index => `kanji_meta_bank_${index + 1}.json`;
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const buildTagBankName = index => `tag_bank_${index + 1}.json`;
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const countBanks = namer => {
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let count = 0;
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while (zip.files[namer(count)]) {
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++count;
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}
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return count;
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};
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const termBankCount = countBanks(buildTermBankName);
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const termMetaBankCount = countBanks(buildTermMetaBankName);
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const kanjiBankCount = countBanks(buildKanjiBankName);
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const kanjiMetaBankCount = countBanks(buildKanjiMetaBankName);
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const tagBankCount = countBanks(buildTagBankName);
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let bankLoadedCount = 0;
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let bankTotalCount =
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termBankCount +
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termMetaBankCount +
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kanjiBankCount +
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kanjiMetaBankCount +
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tagBankCount;
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if (tagDataLoaded && index.tagMeta) {
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const bank = [];
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for (const name in index.tagMeta) {
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const tag = index.tagMeta[name];
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bank.push([name, tag.category, tag.order, tag.notes, tag.score]);
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}
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tagDataLoaded(summary, bank, ++bankTotalCount, bankLoadedCount++);
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}
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const loadBank = async (summary, namer, count, callback) => {
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if (callback) {
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for (let i = 0; i < count; ++i) {
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const bankFile = zip.files[namer(i)];
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const bank = JSON.parse(await bankFile.async('string'));
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await callback(summary, bank, bankTotalCount, bankLoadedCount++);
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}
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}
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};
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await loadBank(summary, buildTermBankName, termBankCount, termDataLoaded);
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await loadBank(summary, buildTermMetaBankName, termMetaBankCount, termMetaDataLoaded);
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|
await loadBank(summary, buildKanjiBankName, kanjiBankCount, kanjiDataLoaded);
|
|
await loadBank(summary, buildKanjiMetaBankName, kanjiMetaBankCount, kanjiMetaDataLoaded);
|
|
await loadBank(summary, buildTagBankName, tagBankCount, tagDataLoaded);
|
|
|
|
return summary;
|
|
}
|
|
|
|
static createTerm(row, index) {
|
|
return {
|
|
index,
|
|
expression: row.expression,
|
|
reading: row.reading,
|
|
definitionTags: dictFieldSplit(row.definitionTags || row.tags || ''),
|
|
termTags: dictFieldSplit(row.termTags || ''),
|
|
rules: dictFieldSplit(row.rules),
|
|
glossary: row.glossary,
|
|
score: row.score,
|
|
dictionary: row.dictionary,
|
|
id: row.id,
|
|
sequence: typeof row.sequence === 'undefined' ? -1 : row.sequence
|
|
};
|
|
}
|
|
|
|
static createKanji(row, index) {
|
|
return {
|
|
index,
|
|
character: row.character,
|
|
onyomi: dictFieldSplit(row.onyomi),
|
|
kunyomi: dictFieldSplit(row.kunyomi),
|
|
tags: dictFieldSplit(row.tags),
|
|
glossary: row.meanings,
|
|
stats: row.stats,
|
|
dictionary: row.dictionary
|
|
};
|
|
}
|
|
|
|
static createMeta(row, index) {
|
|
return {
|
|
index,
|
|
mode: row.mode,
|
|
data: row.data,
|
|
dictionary: row.dictionary
|
|
};
|
|
}
|
|
|
|
static getAll(dbIndex, query, context, processRow) {
|
|
const fn = typeof dbIndex.getAll === 'function' ? Database.getAllFast : Database.getAllUsingCursor;
|
|
return fn(dbIndex, query, context, processRow);
|
|
}
|
|
|
|
static getAllFast(dbIndex, query, context, processRow) {
|
|
return new Promise((resolve, reject) => {
|
|
const request = dbIndex.getAll(query);
|
|
request.onerror = (e) => reject(e);
|
|
request.onsuccess = (e) => {
|
|
for (const row of e.target.result) {
|
|
processRow(row, context);
|
|
}
|
|
resolve();
|
|
};
|
|
});
|
|
}
|
|
|
|
static getAllUsingCursor(dbIndex, query, context, processRow) {
|
|
return new Promise((resolve, reject) => {
|
|
const request = dbIndex.openCursor(query, 'next');
|
|
request.onerror = (e) => reject(e);
|
|
request.onsuccess = (e) => {
|
|
const cursor = e.target.result;
|
|
if (cursor) {
|
|
processRow(cursor.value, context);
|
|
cursor.continue();
|
|
} else {
|
|
resolve();
|
|
}
|
|
};
|
|
});
|
|
}
|
|
|
|
static getCounts(targets, query) {
|
|
const countPromises = [];
|
|
const counts = {};
|
|
for (const [objectStoreName, index] of targets) {
|
|
const n = objectStoreName;
|
|
const countPromise = Database.getCount(index, query).then(count => counts[n] = count);
|
|
countPromises.push(countPromise);
|
|
}
|
|
return Promise.all(countPromises).then(() => counts);
|
|
}
|
|
|
|
static getCount(dbIndex, query) {
|
|
return new Promise((resolve, reject) => {
|
|
const request = dbIndex.count(query);
|
|
request.onerror = (e) => reject(e);
|
|
request.onsuccess = (e) => resolve(e.target.result);
|
|
});
|
|
}
|
|
|
|
static getAllKeys(dbIndex, query) {
|
|
const fn = typeof dbIndex.getAllKeys === 'function' ? Database.getAllKeysFast : Database.getAllKeysUsingCursor;
|
|
return fn(dbIndex, query);
|
|
}
|
|
|
|
static getAllKeysFast(dbIndex, query) {
|
|
return new Promise((resolve, reject) => {
|
|
const request = dbIndex.getAllKeys(query);
|
|
request.onerror = (e) => reject(e);
|
|
request.onsuccess = (e) => resolve(e.target.result);
|
|
});
|
|
}
|
|
|
|
static getAllKeysUsingCursor(dbIndex, query) {
|
|
return new Promise((resolve, reject) => {
|
|
const primaryKeys = [];
|
|
const request = dbIndex.openKeyCursor(query, 'next');
|
|
request.onerror = (e) => reject(e);
|
|
request.onsuccess = (e) => {
|
|
const cursor = e.target.result;
|
|
if (cursor) {
|
|
primaryKeys.push(cursor.primaryKey);
|
|
cursor.continue();
|
|
} else {
|
|
resolve(primaryKeys);
|
|
}
|
|
};
|
|
});
|
|
}
|
|
|
|
static async deleteValues(dbObjectStore, dbIndex, query, onProgress, progressData, progressRate) {
|
|
const hasProgress = (typeof onProgress === 'function');
|
|
const count = await Database.getCount(dbIndex, query);
|
|
++progressData.storesProcesed;
|
|
progressData.count += count;
|
|
if (hasProgress) {
|
|
onProgress(progressData);
|
|
}
|
|
|
|
const onValueDeleted = (
|
|
hasProgress ?
|
|
() => {
|
|
const p = ++progressData.processed;
|
|
if ((p % progressRate) === 0 || p === progressData.count) {
|
|
onProgress(progressData);
|
|
}
|
|
} :
|
|
() => {}
|
|
);
|
|
|
|
const promises = [];
|
|
const primaryKeys = await Database.getAllKeys(dbIndex, query);
|
|
for (const key of primaryKeys) {
|
|
const promise = Database.deleteValue(dbObjectStore, key).then(onValueDeleted);
|
|
promises.push(promise);
|
|
}
|
|
|
|
await Promise.all(promises);
|
|
}
|
|
|
|
static deleteValue(dbObjectStore, key) {
|
|
return new Promise((resolve, reject) => {
|
|
const request = dbObjectStore.delete(key);
|
|
request.onerror = (e) => reject(e);
|
|
request.onsuccess = () => resolve();
|
|
});
|
|
}
|
|
|
|
static bulkAdd(objectStore, items, start, count) {
|
|
return new Promise((resolve, reject) => {
|
|
if (start + count > items.length) {
|
|
count = items.length - start;
|
|
}
|
|
|
|
if (count <= 0) {
|
|
resolve();
|
|
return;
|
|
}
|
|
|
|
const end = start + count;
|
|
let completedCount = 0;
|
|
const onError = (e) => reject(e);
|
|
const onSuccess = () => {
|
|
if (++completedCount >= count) {
|
|
resolve();
|
|
}
|
|
};
|
|
|
|
for (let i = start; i < end; ++i) {
|
|
const request = objectStore.add(items[i]);
|
|
request.onerror = onError;
|
|
request.onsuccess = onSuccess;
|
|
}
|
|
});
|
|
}
|
|
|
|
static open(name, version, onUpgradeNeeded) {
|
|
return new Promise((resolve, reject) => {
|
|
const request = window.indexedDB.open(name, version * 10);
|
|
|
|
request.onupgradeneeded = (event) => {
|
|
try {
|
|
request.transaction.onerror = (e) => reject(e);
|
|
onUpgradeNeeded(request.result, request.transaction, event.oldVersion / 10, event.newVersion / 10);
|
|
} catch (e) {
|
|
reject(e);
|
|
}
|
|
};
|
|
|
|
request.onerror = (e) => reject(e);
|
|
request.onsuccess = () => resolve(request.result);
|
|
});
|
|
}
|
|
|
|
static upgrade(db, transaction, oldVersion, upgrades) {
|
|
for (const {version, stores} of upgrades) {
|
|
if (oldVersion >= version) { continue; }
|
|
|
|
const objectStoreNames = Object.keys(stores);
|
|
for (const objectStoreName of objectStoreNames) {
|
|
const {primaryKey, indices} = stores[objectStoreName];
|
|
|
|
const objectStoreNames = transaction.objectStoreNames || db.objectStoreNames;
|
|
const objectStore = (
|
|
Database.listContains(objectStoreNames, objectStoreName) ?
|
|
transaction.objectStore(objectStoreName) :
|
|
db.createObjectStore(objectStoreName, primaryKey)
|
|
);
|
|
|
|
for (const indexName of indices) {
|
|
if (Database.listContains(objectStore.indexNames, indexName)) { continue; }
|
|
|
|
objectStore.createIndex(indexName, indexName, {});
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static deleteDatabase(dbName) {
|
|
return new Promise((resolve, reject) => {
|
|
const request = indexedDB.deleteDatabase(dbName);
|
|
request.onerror = (e) => reject(e);
|
|
request.onsuccess = () => resolve();
|
|
});
|
|
}
|
|
|
|
static listContains(list, value) {
|
|
for (let i = 0, ii = list.length; i < ii; ++i) {
|
|
if (list[i] === value) { return true; }
|
|
}
|
|
return false;
|
|
}
|
|
}
|