yomichan/ext/bg/translator.js
2016-03-26 14:21:51 -07:00

152 lines
4.1 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.dictionary = new Dictionary();
this.deinflector = new Deinflector();
this.initialized = false;
}
loadData(paths, callback) {
if (this.initialized) {
callback();
return;
}
const loaders = [];
for (const key of ['rules', 'edict', 'enamdict', 'kanjidic']) {
loaders.push(
$.getJSON(chrome.extension.getURL(paths[key]))
);
}
$.when.apply($, loaders).done((rules, edict, enamdict, kanjidic) => {
this.deinflector.setRules(rules[0]);
this.dictionary.addTermDict(edict[0]);
this.dictionary.addTermDict(enamdict[0]);
this.dictionary.addKanjiDict(kanjidic[0]);
this.initialized = true;
if (callback) {
callback();
}
});
}
findTerm(text) {
const groups = {};
for (let i = text.length; i > 0; --i) {
const term = text.slice(0, i);
const dfs = this.deinflector.deinflect(term, t => {
const tags = [];
for (const d of this.dictionary.findTerm(t)) {
tags.push(d.tags);
}
return tags;
});
if (dfs === null) {
this.processTerm(groups, term);
} else {
for (const df of dfs) {
this.processTerm(groups, df.source, df.rules, df.root);
}
}
}
let results = [];
for (const key in groups) {
results.push(groups[key]);
}
results = results.sort(this.resultSorter);
let length = 0;
for (const result of results) {
length = Math.max(length, result.source.length);
}
return {results: results, length: length};
}
findKanji(text) {
let results = [];
const processed = {};
for (const c of text) {
if (!processed.has(c)) {
results = results.concat(this.dictionary.findKanji(c));
processed[c] = true;
}
}
return results;
}
processTerm(groups, source, rules=[], root='') {
for (const entry of this.dictionary.findTerm(root || source)) {
if (entry.id in groups) {
continue;
}
groups[entry.id] = {
expression: entry.expression,
reading: entry.reading,
glossary: entry.glossary,
tags: entry.tags,
source: source,
rules: rules
};
}
}
resultSorter(v1, v2) {
const sl1 = v1.source.length;
const sl2 = v2.source.length;
if (sl1 > sl2) {
return -1;
} else if (sl1 < sl2) {
return 1;
}
const p1 = v1.tags.indexOf('P') >= 0;
const p2 = v2.tags.indexOf('P') >= 0;
if (p1 && !p2) {
return -1;
} else if (!p1 && p2) {
return 1;
}
const rl1 = v1.rules.length;
const rl2 = v2.rules.length;
if (rl1 < rl2) {
return -1;
} else if (rl2 > rl1) {
return 1;
}
return 0;
}
}