yomichan/ext/bg/js/audio.js

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/*
* Copyright (C) 2017 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/>.
*/
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async function audioBuildUrl(definition, mode, cache={}) {
if (mode === 'jpod101') {
let kana = definition.reading;
let kanji = definition.expression;
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if (!kana && wanakana.isHiragana(kanji)) {
kana = kanji;
kanji = null;
}
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const params = [];
if (kanji) {
params.push(`kanji=${encodeURIComponent(kanji)}`);
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}
if (kana) {
params.push(`kana=${encodeURIComponent(kana)}`);
}
const url = `https://assets.languagepod101.com/dictionary/japanese/audiomp3.php?${params.join('&')}`;
return Promise.resolve(url);
} else if (mode === 'jpod101-alternate') {
return new Promise((resolve, reject) => {
const response = cache[definition.expression];
if (response) {
resolve(response);
} else {
const data = {
post: 'dictionary_reference',
match_type: 'exact',
search_query: definition.expression
};
const params = [];
for (const key in data) {
params.push(`${encodeURIComponent(key)}=${encodeURIComponent(data[key])}`);
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}
const xhr = new XMLHttpRequest();
xhr.open('POST', 'https://www.japanesepod101.com/learningcenter/reference/dictionary_post');
xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
xhr.addEventListener('error', () => reject('failed to scrape audio data'));
xhr.addEventListener('load', () => {
cache[definition.expression] = xhr.responseText;
resolve(xhr.responseText);
});
xhr.send(params.join('&'));
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}
}).then(response => {
const dom = new DOMParser().parseFromString(response, 'text/html');
for (const row of dom.getElementsByClassName('dc-result-row')) {
try {
const url = row.getElementsByClassName('ill-onebuttonplayer').item(0).getAttribute('data-url');
const reading = row.getElementsByClassName('dc-vocab_kana').item(0).innerText;
if (url && reading && (!definition.reading || definition.reading === reading)) {
return url;
}
} catch (e) {
// NOP
}
}
});
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} else if (mode === 'jisho') {
return new Promise((resolve, reject) => {
const response = cache[definition.expression];
if (response) {
resolve(response);
} else {
const xhr = new XMLHttpRequest();
xhr.open('GET', `http://jisho.org/search/${definition.expression}`);
xhr.addEventListener('error', () => reject('failed to scrape audio data'));
xhr.addEventListener('load', () => {
cache[definition.expression] = xhr.responseText;
resolve(xhr.responseText);
});
xhr.send();
}
}).then(response => {
try {
const dom = new DOMParser().parseFromString(response, 'text/html');
const audio = dom.getElementById(`audio_${definition.expression}:${definition.reading}`);
if (audio) {
return audio.getElementsByTagName('source').item(0).getAttribute('src');
}
} catch (e) {
// NOP
}
});
}
else {
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return Promise.resolve();
}
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}
function audioBuildFilename(definition) {
if (definition.reading || definition.expression) {
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let filename = 'yomichan';
if (definition.reading) {
filename += `_${definition.reading}`;
}
if (definition.expression) {
filename += `_${definition.expression}`;
}
return filename += '.mp3';
}
}
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async function audioInject(definition, fields, mode) {
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let usesAudio = false;
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for (const name in fields) {
if (fields[name].includes('{audio}')) {
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usesAudio = true;
break;
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}
}
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if (!usesAudio) {
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return true;
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}
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try {
const url = await audioBuildUrl(definition, mode);
const filename = audioBuildFilename(definition);
if (url && filename) {
definition.audio = {url, filename};
}
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return true;
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} catch (e) {
return false;
}
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}