/* * Copyright (C) 2016 Alex Yatskov <alex@foosoft.net> * Author: Alex Yatskov <alex@foosoft.net> * * 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 <http://www.gnu.org/licenses/>. */ class Translator { constructor() { this.database = null; this.deinflector = null; } async prepare() { if (!this.database) { this.database = new Database(); await this.database.prepare(); } if (!this.deinflector) { const url = chrome.extension.getURL('/bg/lang/deinflect.json'); const reasons = await requestJson(url, 'GET'); this.deinflector = new Deinflector(reasons); } } async findTermsGrouped(text, dictionaries, alphanumeric) { const titles = Object.keys(dictionaries); const {length, definitions} = await this.findTerms(text, dictionaries, alphanumeric); const definitionsGrouped = dictTermsGroup(definitions, dictionaries); for (const definition of definitionsGrouped) { await this.buildTermFrequencies(definition, titles); } return {length, definitions: definitionsGrouped}; } async findTermsSplit(text, dictionaries, alphanumeric) { const titles = Object.keys(dictionaries); const {length, definitions} = await this.findTerms(text, dictionaries, alphanumeric); for (const definition of definitions) { await this.buildTermFrequencies(definition, titles); } return {length, definitions}; } async findTerms(text, dictionaries, alphanumeric) { if (!alphanumeric && text.length > 0) { const c = text[0]; if (!jpIsKana(c) && !jpIsKanji(c)) { return {length: 0, definitions: []}; } } const cache = {}; const titles = Object.keys(dictionaries); let deinflections = await this.findTermDeinflections(text, titles, cache); const textHiragana = jpKatakanaToHiragana(text); if (text !== textHiragana) { deinflections = deinflections.concat(await this.findTermDeinflections(textHiragana, titles, cache)); } let definitions = []; for (const deinflection of deinflections) { for (const definition of deinflection.definitions) { const tags = await this.expandTags(definition.tags, definition.dictionary); tags.push(dictTagBuildSource(definition.dictionary)); definitions.push({ source: deinflection.source, reasons: deinflection.reasons, score: definition.score, id: definition.id, dictionary: definition.dictionary, expression: definition.expression, reading: definition.reading, glossary: definition.glossary, tags: dictTagsSort(tags) }); } } definitions = dictTermsUndupe(definitions); definitions = dictTermsSort(definitions, dictionaries); let length = 0; for (const definition of definitions) { length = Math.max(length, definition.source.length); } return {length, definitions}; } async findTermDeinflections(text, titles, cache) { const definer = async term => { if (cache.hasOwnProperty(term)) { return cache[term]; } else { return cache[term] = await this.database.findTerms(term, titles); } }; let deinflections = []; for (let i = text.length; i > 0; --i) { const textSlice = text.slice(0, i); deinflections = deinflections.concat(await this.deinflector.deinflect(textSlice, definer)); } return deinflections; } async findKanji(text, dictionaries) { let definitions = []; const processed = {}; const titles = Object.keys(dictionaries); for (const c of text) { if (!processed[c]) { definitions = definitions.concat(await this.database.findKanji(c, titles)); processed[c] = true; } } for (const definition of definitions) { const tags = await this.expandTags(definition.tags, definition.dictionary); tags.push(dictTagBuildSource(definition.dictionary)); definition.tags = dictTagsSort(tags); definition.stats = await this.expandStats(definition.stats, definition.dictionary); definition.frequencies = await this.database.findKanjiFreq(definition.character, titles); } return definitions; } async buildTermFrequencies(definition, titles) { definition.frequencies = await this.database.findTermFreq(definition.expression, titles); if (definition.frequencies.length === 0) { definition.frequencies = await this.database.findTermFreq(definition.reading, titles); } } async expandTags(names, title) { const tags = []; for (const name of names) { const base = name.split(':')[0]; const meta = await this.database.findTagForTitle(base, title); const tag = {name}; for (const prop in meta || {}) { if (prop !== 'name') { tag[prop] = meta[prop]; } } tags.push(dictTagSanitize(tag)); } return tags; } async expandStats(items, title) { const stats = {}; for (const name in items) { const base = name.split(':')[0]; const meta = await this.database.findTagForTitle(base, title); const group = stats[meta.category] = stats[meta.category] || []; const stat = {name, value: items[name]}; for (const prop in meta || {}) { if (prop !== 'name') { stat[prop] = meta[prop]; } } group.push(dictTagSanitize(stat)); } return stats; } }