128 lines
4.4 KiB
JavaScript
128 lines
4.4 KiB
JavaScript
/*
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* Copyright (C) 2016 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 Translator {
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constructor() {
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this.database = null;
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this.deinflector = null;
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}
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async prepare() {
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if (!this.database) {
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this.database = new Database();
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await this.database.prepare();
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}
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if (!this.deinflector) {
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const url = chrome.extension.getURL('/bg/lang/deinflect.json');
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const reasons = await requestJson(url, 'GET');
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this.deinflector = new Deinflector(reasons);
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}
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}
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async findTermsGrouped(text, dictionaries, alphanumeric) {
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const {length, definitions} = await this.findTerms(text, dictionaries, alphanumeric);
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return {length, definitions: dictTermsGroup(definitions, dictionaries)};
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}
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async findTerms(text, dictionaries, alphanumeric) {
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if (!alphanumeric && text.length > 0) {
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const c = text[0];
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if (!jpIsKana(c) && !jpIsKanji(c)) {
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return {length: 0, definitions: []};
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}
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}
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const cache = {};
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const titles = Object.keys(dictionaries);
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let deinflections = await this.findTermsDeinflected(text, titles, cache);
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const textHiragana = jpKatakanaToHiragana(text);
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if (text !== textHiragana) {
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deinflections = deinflections.concat(await this.findTermsDeinflected(textHiragana, titles, cache));
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}
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let definitions = [];
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for (const deinflection of deinflections) {
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for (const definition of deinflection.definitions) {
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const tags = definition.tags.map(tag => dictTagBuild(tag, definition.tagMeta));
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tags.push(dictTagBuildSource(definition.dictionary));
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definitions.push({
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source: deinflection.source,
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reasons: deinflection.reasons,
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score: definition.score,
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id: definition.id,
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dictionary: definition.dictionary,
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expression: definition.expression,
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reading: definition.reading,
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glossary: definition.glossary,
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tags: dictTagsSort(tags)
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});
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}
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}
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definitions = dictTermsUndupe(definitions);
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definitions = dictTermsSort(definitions, dictionaries);
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let length = 0;
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for (const definition of definitions) {
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length = Math.max(length, definition.source.length);
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}
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return {length, definitions};
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}
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async findTermsDeinflected(text, titles, cache) {
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const definer = async term => {
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if (cache.hasOwnProperty(term)) {
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return cache[term];
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} else {
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return cache[term] = await this.database.findTerms(term, titles);
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}
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};
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let deinflections = [];
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for (let i = text.length; i > 0; --i) {
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const textSlice = text.slice(0, i);
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deinflections = deinflections.concat(await this.deinflector.deinflect(textSlice, definer));
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}
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return deinflections;
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}
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async findKanji(text, dictionaries) {
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let definitions = [];
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const processed = {};
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const titles = Object.keys(dictionaries);
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for (const c of text) {
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if (!processed[c]) {
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definitions = definitions.concat(await this.database.findKanji(c, titles));
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processed[c] = true;
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}
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}
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for (const definition of definitions) {
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const tags = definition.tags.map(tag => dictTagBuild(tag, definition.tagMeta));
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tags.push(dictTagBuildSource(definition.dictionary));
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definition.tags = dictTagsSort(tags);
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}
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return definitions;
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}
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}
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