Download manga on nHentai.net
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// ==UserScript==
// @name nHentai Downloader
// @namespace http://devs.forumvi.com
// @description Download manga on nHentai.net
// @version 1.6.0
// @icon http://i.imgur.com/FAsQ4vZ.png
// @author Zzbaivong
// @license MIT
// @match http://nhentai.net/g/*
// @match https://nhentai.net/g/*
// @require https://code.jquery.com/jquery-3.2.1.slim.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/jszip/3.1.4/jszip.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/FileSaver.js/1.3.3/FileSaver.min.js
// @require https://greasemonkey.github.io/gm4-polyfill/gm4-polyfill.js
// @noframes
// @connect self
// @supportURL https://github.com/baivong/Userscript/issues
// @run-at document-idle
// @grant GM_xmlhttpRequest
// @grant GM.xmlHttpRequest
// ==/UserScript==
jQuery(function ($) {
'use strict';
/**
* Output extension
* @type {String} zip
* cbz
*
* Tips: Convert .zip to .cbz
* Windows
* $ ren *.zip *.cbz
* Linux
* $ rename 's/\.zip$/\.cbz/' *.zip
*/
var outputExt = 'cbz'; // or 'zip'
/**
* Multithreading
* @type {Number} [1 -> 32]
*/
var threading = 8;
/**
* Logging
* @type {Boolean}
*/
var debug = false;
function end() {
$win.off('beforeunload');
if (debug) console.timeEnd('nHentai');
}
function getInfo() {
var $info = $('#info'),
$h1 = $info.find('h1'),
$h2 = $info.find('h2'),
$tags = $('#tags').clone(),
info = '';
$tags.find('.tag-container.hidden').remove();
$tags.find('.count').remove();
$tags.find('.tags a').replaceWith(function () {
return this.textContent.trim() + ', ';
});
$tags.find('.tags').replaceWith(function () {
return this.textContent.trim().slice(0, -1);
});
$tags.find('.tag-container').replaceWith(function () {
return this.textContent.trim().replace(/[\n\s\t]{2,}/, ' ');
});
if ($h1.length) info += $h1.text().trim() + '\r\n';
if ($h2.length) info += $h2.text().trim() + '\r\n';
if ($tags.length) info += '\r\n' + $tags.text().trim().replace(/[\n\s\t]{2,}/g, '\r\n');
if (debug) console.log(info);
return info;
}
function genZip() {
zip.file('info.txt', getInfo());
zip.generateAsync({
type: 'blob'
}).then(function (blob) {
var zipName = tit.split(' » ')[0]
.replace(/\s/g, '_') + '.' + comicId + '.' + outputExt;
if (prevZip) window.URL.revokeObjectURL(prevZip);
prevZip = blob;
$download.html('<i class="fa fa-check"></i> Complete')
.css('backgroundColor', 'green')
.attr({
href: window.URL.createObjectURL(prevZip),
download: zipName
});
saveAs(blob, zipName);
doc.title = '[⇓] ' + tit;
if (debug) console.log('COMPLETE');
end();
}, function (reason) {
$download.html('<i class="fa fa-exclamation"></i> Fail')
.css('backgroundColor', 'red');
doc.title = '[x] ' + tit;
if (debug) console.error(reason, 'ERROR');
end();
});
}
function dlImg(url, success, error) {
var filename = url.replace(/.*\//g, '');
filename = filename.split('.');
filename = ('0000' + filename[0]).slice(-4) + '.' + filename[1];
if (debug) console.log(filename, 'progress');
GM.xmlHttpRequest({
method: 'GET',
url: url,
responseType: 'arraybuffer',
onload: function (response) {
final++;
success(response, filename);
},
onerror: function (err) {
final++;
error(err, filename);
}
});
}
function next() {
$download.html('<i class="fa fa-cog fa-spin"></i> ' + final + '/' + total);
if (debug) console.log(final, current);
if (final < current) return;
final < total ? addZip() : genZip();
}
function addZip() {
var max = current + threading;
if (max > total) max = total;
for (current; current < max; current++) {
var url = images[current];
if (debug) console.log(url, 'download');
dlImg(url, function (response, filename) {
zip.file(filename, response.response);
if (debug) console.log(filename, 'success');
next();
}, function (err, filename) {
zip.file(filename + '_' + comicId + '_error.gif', 'R0lGODdhBQAFAIACAAAAAP/eACwAAAAABQAFAAACCIwPkWerClIBADs=', {
base64: true
});
$download.css('backgroundColor', '#FF7F7F');
if (debug) console.log(filename, 'error');
next();
});
}
if (debug) console.log(current, 'current');
}
var zip = new JSZip(),
prevZip = false,
current = 0,
final = 0,
total = 0,
images = [],
$images = $('#thumbnail-container img'),
$download = $('#download-torrent, #download'),
doc = document,
tit = doc.title,
$win = $(window),
comicId = location.pathname.match(/\d+/)[0];
if (!$images.length || !$download.length) return;
window.URL = window.URL || window.webkitURL;
$download.css('backgroundColor', 'cornflowerblue')
.one('click', function (e) {
e.preventDefault();
if (debug) console.time('nHentai');
if (threading < 1) threading = 1;
if (threading > 32) threading = 32;
$win.on('beforeunload', function () {
return 'Progress is running...';
});
$download.attr('href', '#download')
.html('<i class="fa fa-cog fa-spin"></i> Waiting...')
.css('backgroundColor', 'orange');
$images.each(function (i, v) {
var src = $(v).data('src');
if (/^\/\/t\./i.test(src)) src = location.protocol + src;
src = src.replace('t.n', 'i.n')
.replace(/\/(\d+)t\./, '/$1.');
images[i] = src;
});
total = images.length;
addZip();
});
});