yomichan/ext/bg/js/translator.js
2016-12-23 16:25:14 -08:00

128 lines
4.3 KiB
JavaScript

/*
* 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.loaded = false;
this.ruleMeta = null;
this.database = new Database();
this.deinflector = new Deinflector();
}
prepare() {
if (this.loaded) {
return Promise.resolve();
}
const promises = [
loadJsonInt('bg/lang/deinflect.json'),
this.database.prepare()
];
return Promise.all(promises).then(([reasons]) => {
this.deinflector.setReasons(reasons);
this.loaded = true;
});
}
findTerm(text, dictionaries, enableSoftKatakanaSearch) {
const cache = {};
return this.findTermDeinflections(text, dictionaries, cache).then(deinfHiragana => {
const textHiragana = wanakana._katakanaToHiragana(text);
if (text !== textHiragana && enableSoftKatakanaSearch) {
return this.findTermDeinflections(textHiragana, dictionaries, cache).then(deinfHiragana => deinfHiragana.concat(deinfHiragana));
} else {
return deinfHiragana;
}
}).then(deinflections => {
let definitions = [];
for (const deinflection of deinflections) {
for (const definition of deinflection.definitions) {
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: sortTags(definition.tags.map(tag => buildTag(tag, definition.tagMeta)))
});
}
}
definitions = undupeTermDefs(definitions);
definitions = sortTermDefs(definitions);
let length = 0;
for (const definition of definitions) {
length = Math.max(length, definition.source.length);
}
return {length, definitions};
});
}
findKanji(text, dictionaries) {
const processed = {}, promises = [];
for (const c of text) {
if (!processed[c]) {
promises.push(this.database.findKanji(c, dictionaries));
processed[c] = true;
}
}
return Promise.all(promises).then(sets => this.processKanji(sets.reduce((a, b) => a.concat(b), [])));
}
findTermDeinflections(text, dictionaries, cache) {
const definer = term => {
if (cache.hasOwnProperty(term)) {
return Promise.resolve(cache[term]);
}
return this.database.findTerm(term, dictionaries).then(definitions => cache[term] = definitions);
};
const promises = [];
for (let i = text.length; i > 0; --i) {
promises.push(this.deinflector.deinflect(text.slice(0, i), definer));
}
return Promise.all(promises).then(results => {
let deinflections = [];
for (const result of results) {
deinflections = deinflections.concat(result);
}
return deinflections;
});
}
processKanji(definitions) {
for (const definition of definitions) {
const tags = definition.tags.map(tag => buildTag(tag, definition.tagMeta));
definition.tags = sortTags(tags);
}
return definitions;
}
}