353 lines
13 KiB
JavaScript
353 lines
13 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, options) {
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const titles = Object.keys(dictionaries);
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const {length, definitions} = await this.findTerms(text, dictionaries, alphanumeric);
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const definitionsGrouped = dictTermsGroup(definitions, dictionaries);
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for (const definition of definitionsGrouped) {
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await this.buildTermFrequencies(definition, titles);
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}
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if (options.general.compactTags) {
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for (const definition of definitionsGrouped) {
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dictTermsCompressTags(definition.definitions);
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}
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}
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return {length, definitions: definitionsGrouped};
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}
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async findTermsMerged(text, dictionaries, alphanumeric, options) {
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const secondarySearchTitles = Object.keys(options.dictionaries).filter(dict => options.dictionaries[dict].allowSecondarySearches);
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const titles = Object.keys(dictionaries);
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const {length, definitions} = await this.findTerms(text, dictionaries, alphanumeric);
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const definitionsBySequence = dictTermsMergeBySequence(definitions, options.general.mainDictionary);
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const definitionsMerged = [];
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const mergedByTermIndices = new Set();
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for (const sequence in definitionsBySequence) {
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if (sequence < 0) {
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continue;
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}
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const result = definitionsBySequence[sequence];
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const rawDefinitionsBySequence = await this.database.findTermsBySequence(Number(sequence), options.general.mainDictionary);
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for (const definition of rawDefinitionsBySequence) {
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const definitionTags = await this.expandTags(definition.definitionTags, definition.dictionary);
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definitionTags.push(dictTagBuildSource(definition.dictionary));
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definition.definitionTags = definitionTags;
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const termTags = await this.expandTags(definition.termTags, definition.dictionary);
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definition.termTags = termTags;
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}
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const definitionsByGloss = dictTermsMergeByGloss(result, rawDefinitionsBySequence);
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const secondarySearchResults = [];
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if (secondarySearchTitles.length > 0) {
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for (const expression of result.expressions.keys()) {
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if (expression === text) {
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continue;
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}
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for (const reading of result.expressions.get(expression).keys()) {
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for (const definition of await this.database.findTermsExact(expression, reading, secondarySearchTitles)) {
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const definitionTags = await this.expandTags(definition.definitionTags, definition.dictionary);
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definitionTags.push(dictTagBuildSource(definition.dictionary));
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definition.definitionTags = definitionTags;
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const termTags = await this.expandTags(definition.termTags, definition.dictionary);
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definition.termTags = termTags;
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secondarySearchResults.push(definition);
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}
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}
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}
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}
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dictTermsMergeByGloss(result, definitionsBySequence['-1'].concat(secondarySearchResults), definitionsByGloss, mergedByTermIndices);
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for (const gloss in definitionsByGloss) {
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const definition = definitionsByGloss[gloss];
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dictTagsSort(definition.definitionTags);
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result.definitions.push(definition);
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}
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dictTermsSort(result.definitions, dictionaries);
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const expressions = [];
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for (const expression of result.expressions.keys()) {
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for (const reading of result.expressions.get(expression).keys()) {
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const termTags = result.expressions.get(expression).get(reading);
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expressions.push({
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expression: expression,
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reading: reading,
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termTags: dictTagsSort(termTags),
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termFrequency: (score => {
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if (score > 0) {
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return 'popular';
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} else if (score < 0) {
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return 'rare';
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} else {
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return 'normal';
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}
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})(termTags.map(tag => tag.score).reduce((p, v) => p + v, 0))
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});
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}
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}
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result.expressions = expressions;
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result.expression = Array.from(result.expression);
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result.reading = Array.from(result.reading);
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definitionsMerged.push(result);
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}
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const strayDefinitions = definitionsBySequence['-1'].filter((definition, index) => !mergedByTermIndices.has(index));
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for (const groupedDefinition of dictTermsGroup(strayDefinitions, dictionaries)) {
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groupedDefinition.expressions = [{expression: groupedDefinition.expression, reading: groupedDefinition.reading}];
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definitionsMerged.push(groupedDefinition);
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}
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for (const definition of definitionsMerged) {
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await this.buildTermFrequencies(definition, titles);
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}
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if (options.general.compactTags) {
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for (const definition of definitionsMerged) {
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dictTermsCompressTags(definition.definitions);
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}
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}
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return {length, definitions: dictTermsSort(definitionsMerged)};
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}
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async findTermsSplit(text, dictionaries, alphanumeric) {
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const titles = Object.keys(dictionaries);
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const {length, definitions} = await this.findTerms(text, dictionaries, alphanumeric);
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for (const definition of definitions) {
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await this.buildTermFrequencies(definition, titles);
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}
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return {length, definitions};
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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.findTermDeinflections(text, titles, cache);
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const textHiragana = jpKatakanaToHiragana(text);
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if (text !== textHiragana) {
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deinflections.push(...await this.findTermDeinflections(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 definitionTags = await this.expandTags(definition.definitionTags, definition.dictionary);
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definitionTags.push(dictTagBuildSource(definition.dictionary));
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const termTags = await this.expandTags(definition.termTags, 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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definitionTags: dictTagsSort(definitionTags),
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termTags: dictTagsSort(termTags),
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sequence: definition.sequence
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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 findTermDeinflections(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.push(...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.push(...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 = await this.expandTags(definition.tags, definition.dictionary);
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tags.push(dictTagBuildSource(definition.dictionary));
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definition.tags = dictTagsSort(tags);
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definition.stats = await this.expandStats(definition.stats, definition.dictionary);
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definition.frequencies = [];
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for (const meta of await this.database.findKanjiMeta(definition.character, titles)) {
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if (meta.mode === 'freq') {
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definition.frequencies.push({
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character: meta.character,
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frequency: meta.data,
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dictionary: meta.dictionary
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});
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}
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}
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}
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return definitions;
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}
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async buildTermFrequencies(definition, titles) {
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let terms = [];
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if (definition.expressions) {
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terms.push(...definition.expressions);
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} else {
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terms.push(definition);
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}
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for (const term of terms) {
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term.frequencies = [];
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for (const meta of await this.database.findTermMeta(term.expression, titles)) {
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if (meta.mode === 'freq') {
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term.frequencies.push({
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expression: meta.expression,
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frequency: meta.data,
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dictionary: meta.dictionary
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});
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}
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}
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}
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}
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async expandTags(names, title) {
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const tags = [];
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for (const name of names) {
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const base = Translator.getNameBase(name);
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const meta = await this.database.findTagForTitle(base, title);
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const tag = {name};
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for (const prop in meta || {}) {
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if (prop !== 'name') {
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tag[prop] = meta[prop];
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}
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}
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tags.push(dictTagSanitize(tag));
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}
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return tags;
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}
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async expandStats(items, title) {
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const stats = {};
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for (const name in items) {
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const base = Translator.getNameBase(name);
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const meta = await this.database.findTagForTitle(base, title);
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const group = stats[meta.category] = stats[meta.category] || [];
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const stat = {name, value: items[name]};
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for (const prop in meta || {}) {
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if (prop !== 'name') {
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stat[prop] = meta[prop];
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}
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}
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group.push(dictTagSanitize(stat));
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}
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for (const category in stats) {
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stats[category].sort((a, b) => {
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if (a.notes < b.notes) {
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return -1;
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} else if (a.notes > b.notes) {
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return 1;
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} else {
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return 0;
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}
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});
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}
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return stats;
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}
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static getNameBase(name) {
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const pos = name.indexOf(':');
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return (pos >= 0 ? name.substr(0, pos) : name);
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}
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}
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