yomichan/ext/bg/js/translator.js
2016-08-20 13:42:12 -07:00

259 lines
7.4 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.tagMeta = null;
this.dictionary = new Dictionary();
this.deinflector = new Deinflector();
}
loadData({loadEnamDict=true}, callback) {
if (this.loaded) {
callback();
return;
}
Translator.loadData('bg/data/rules.json')
.then((response) => {
this.deinflector.setRules(JSON.parse(response));
return Translator.loadData('bg/data/tags.json');
})
.then((response) => {
this.tagMeta = JSON.parse(response);
return Translator.loadData('bg/data/edict.json');
})
.then((response) => {
this.dictionary.addTermDict('edict', JSON.parse(response));
return Translator.loadData('bg/data/kanjidic.json');
})
.then((response) => {
this.dictionary.addKanjiDict('kanjidic', JSON.parse(response));
return loadEnamDict ? Translator.loadData('bg/data/enamdict.json') : Promise.resolve(null);
})
.then((response) => {
if (response !== null) {
this.dictionary.addTermDict('enamdict', JSON.parse(response));
}
this.loaded = true;
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) {
continue;
}
for (const df of dfs) {
this.processTerm(groups, df.source, df.tags, df.rules, df.root);
}
}
let definitions = [];
for (const key in groups) {
definitions.push(groups[key]);
}
definitions = definitions.sort((v1, v2) => {
const sl1 = v1.source.length;
const sl2 = v2.source.length;
if (sl1 > sl2) {
return -1;
} else if (sl1 < sl2) {
return 1;
}
const s1 = v1.score;
const s2 = v2.score;
if (s1 > s2) {
return -1;
} else if (s1 < s2) {
return 1;
}
const rl1 = v1.rules.length;
const rl2 = v2.rules.length;
if (rl1 < rl2) {
return -1;
} else if (rl1 > rl2) {
return 1;
}
return v2.expression.localeCompare(v1.expression);
});
let length = 0;
for (const result of definitions) {
length = Math.max(length, result.source.length);
}
return {definitions: definitions, length: length};
}
findKanji(text) {
let definitions = [];
const processed = {};
for (const c of text) {
if (!processed[c]) {
definitions = definitions.concat(this.dictionary.findKanji(c));
processed[c] = true;
}
}
return this.processKanji(definitions);
}
processTerm(groups, source, tags, rules, root) {
for (const entry of this.dictionary.findTerm(root)) {
if (entry.id in groups) {
continue;
}
let matched = tags.length === 0;
for (const tag of tags) {
if (entry.tags.indexOf(tag) !== -1) {
matched = true;
break;
}
}
if (!matched) {
continue;
}
const tagItems = [];
for (const tag of entry.tags) {
const tagItem = {
name: tag,
class: 'default',
order: Number.MAX_SAFE_INTEGER,
score: 0,
desc: entry.entities[tag] || '',
};
this.applyTagMeta(tagItem);
tagItems.push(tagItem);
}
let score = 0;
for (const tagItem of tagItems) {
score += tagItem.score;
}
groups[entry.id] = {
score,
source,
rules,
expression: entry.expression,
reading: entry.reading,
glossary: entry.glossary,
tags: Translator.sortTags(tagItems)
};
}
}
processKanji(entries) {
const results = [];
for (const entry of entries) {
const tagItems = [];
for (const tag of entry.tags) {
const tagItem = {
name: tag,
class: 'default',
order: Number.MAX_SAFE_INTEGER,
desc: '',
};
this.applyTagMeta(tagItem);
tagItems.push(tagItem);
}
results.push({
character: entry.character,
kunyomi: entry.kunyomi,
onyomi: entry.onyomi,
glossary: entry.glossary,
tags: Translator.sortTags(tagItems)
});
}
return results;
}
applyTagMeta(tag) {
const symbol = tag.name.split(':')[0];
for (const prop in this.tagMeta[symbol] || {}) {
tag[prop] = this.tagMeta[symbol][prop];
}
}
static sortTags(tags) {
return tags.sort((v1, v2) => {
const order1 = v1.order;
const order2 = v2.order;
if (order1 < order2) {
return -1;
} else if (order1 > order2) {
return 1;
}
const name1 = v1.name;
const name2 = v2.name;
if (name1 < name2) {
return -1;
} else if (name1 > name2) {
return 1;
}
return 0;
});
}
static isKanji(c) {
const code = c.charCodeAt(0);
return code >= 0x4e00 && code < 0x9fb0 || code >= 0x3400 && code < 0x4dc0;
}
static loadData(url) {
return new Promise((resolve, reject) => {
const xhr = new XMLHttpRequest();
xhr.addEventListener('load', () => resolve(xhr.responseText));
xhr.open('GET', chrome.extension.getURL(url), true);
xhr.send();
});
}
}