Download manga on nHentai.
As of
// ==UserScript==
// @name nHentai Downloader
// @name:vi nHentai Downloader
// @namespace http://devs.forumvi.com
// @description Download manga on nHentai.
// @description:vi Tải truyện tranh tại NhệnTái.
// @version 2.0.0
// @icon http://i.imgur.com/FAsQ4vZ.png
// @author Zzbaivong
// @oujs:author baivong
// @license MIT; https://baivong.mit-license.org/license.txt
// @match http://nhentai.net/g/*
// @match https://nhentai.net/g/*
// @require https://code.jquery.com/jquery-3.5.1.min.js
// @require https://unpkg.com/jszip@3.1.5/dist/jszip.min.js
// @require https://greasyfork.org/scripts/28536-gm-config/code/GM_config.js?version=184529
// @require https://greasemonkey.github.io/gm4-polyfill/gm4-polyfill.js?v=a834d46
// @require https://cdn.jsdelivr.net/npm/web-streams-polyfill@2.0.2/dist/ponyfill.min.js
// @require https://cdn.jsdelivr.net/npm/streamsaver@2.0.3/StreamSaver.min.js
// @noframes
// @connect self
// @supportURL https://github.com/lelinhtinh/Userscript/issues
// @run-at document-idle
// @grant GM.xmlHttpRequest
// @grant GM_xmlhttpRequest
// @grant unsafeWindow
// @grant GM_getValue
// @grant GM_setValue
// @grant GM.getValue
// @grant GM.setValue
// ==/UserScript==
/* global streamSaver */
(function ($, window) {
'use strict';
var configFrame = document.createElement('div');
$('#info-block').append(configFrame);
GM_config.init({
id: 'nHentaiDlConfig',
title: 'Downloader Settings',
fields: {
outputExt: {
options: ['cbz', 'zip'],
label: 'Export as',
type: 'radio',
default: 'cbz',
},
outputName: {
label: 'Filename',
type: 'select',
options: ['pretty', 'english', 'japanese'],
default: 'pretty',
},
threading: {
label: 'Max. conn. number',
type: 'unsigned int',
min: 1,
max: 32,
default: 4,
},
hideTorrentBtn: {
label: 'Hide the download torrent button',
type: 'checkbox',
default: false,
},
},
frame: configFrame,
events: {
save: function () {
outputExt = GM_config.get('outputExt');
outputName = GM_config.get('outputName');
threading = GM_config.get('threading');
$download.find('span').text(' as ' + outputExt.toUpperCase());
if (GM_config.get('hideTorrentBtn') == true) {
$_download.hide();
} else {
$_download.show();
}
var $saveBtn = $('#nHentaiDlConfig_saveBtn');
$saveBtn.prop('disabled', true).addClass('saved').text('Saved!');
setTimeout(function () {
$saveBtn.prop('disabled', false).removeClass('saved').text('Save');
}, 1500);
},
},
css:
'#nHentaiDlConfig{width:100%!important;position:initial!important;padding:10px!important;background:#0d0d0d;border:1px solid #313131!important;border-radius:5px;text-align:left}#nHentaiDlConfig *{font-family:"Noto Sans",sans-serif}#nHentaiDlConfig .config_header{text-align:left;font-size:17px;font-weight:700;margin-bottom:20px;color:#999}#nHentaiDlConfig .reset_holder{float:left;height:30px;line-height:30px}#nHentaiDlConfig .reset{color:#4d4d4d;text-align:left}#nHentaiDlConfig .saveclose_buttons{margin:0;padding:4px;min-width:100px;height:30px;line-height:14px;border-radius:2px;border:1px solid;cursor:pointer}#nHentaiDlConfig .saveclose_buttons.saved{background:#ffeb3b;border:1px solid #ffc107}#nHentaiDlConfig #nHentaiDlConfig_closeBtn{display:none}#nHentaiDlConfig_buttons_holder{margin-top:20px;border-top:1px dashed #4d4d4d;padding-top:11px}#nHentaiDlConfig .config_var::after{clear:both;content:"";display:block}#nHentaiDlConfig .config_var{position:relative}#nHentaiDlConfig .field_label{font-size:14px;height:26px;line-height:26px;margin:0;padding:0 10px 0 0;width:60%;display:block;float:left}#nHentaiDlConfig .config_var>[type=text],#nHentaiDlConfig .config_var>div,#nHentaiDlConfig .config_var>select,#nHentaiDlConfig .config_var>textarea{width:40%;border-radius:0;display:block;height:26px;line-height:26px;padding:0 10px;float:left}#nHentaiDlConfig .config_var>textarea{height:auto;line-height:14px;padding:10px;min-height:5em}#nHentaiDlConfig .config_var>select{background:#4d4d4d;color:#d9d9d9;padding:0}#nHentaiDlConfig .config_var>select:hover{background:#666}#nHentaiDlConfig .config_var>select:focus{outline:0 none}#nHentaiDlConfig .config_var>div>label{display:inline-block;vertical-align:top;margin-right:5px}#nHentaiDlConfig .config_var>#nHentaiDlConfig_field_outputName{width:150px;text-transform:capitalize}#nHentaiDlConfig .config_var>#nHentaiDlConfig_field_threading{width:70px}#nHentaiDlConfig .config_var>div{padding:0}#nHentaiDlConfig_field_outputExt{text-transform:uppercase}#nHentaiDlConfig_field_outputExt [value=cbz]{margin-right:20px!important}',
});
/**
* Output extension
* @type {'cbz'|'zip'}
*
* Tips: Convert .zip to .cbz
* Windows
* $ ren *.zip *.cbz
* Linux
* $ rename 's/\.zip$/\.cbz/' *.zip
*/
var outputExt = GM_config.get('outputExt') || 'cbz';
/**
* File name
* @type {'pretty'|'english'|'japanese'}
*/
var outputName = GM_config.get('outputName') || 'pretty';
/**
* Multithreading
* @type {Number} [1 -> 32]
*/
var threading = GM_config.get('threading') || 4;
/**
* Logging
* @type {Boolean}
*/
var debug = false;
function end() {
$win.off('beforeunload');
if (debug) console.timeEnd('nHentai');
}
function getInfo() {
var info = '',
tags = [],
artists = [],
groups = [],
parodies = [],
characters = [],
categories = [],
languages = [];
if (gallery.title.english) info += gallery.title.english + '\r\n';
if (gallery.title.japanese) info += gallery.title.japanese + '\r\n';
if (gallery.title.pretty) info += gallery.title.pretty + '\r\n';
info += '#' + gallery.id + '\r\n';
if (gallery.tags) {
for (const tag of gallery.tags) {
if (tag.type === 'tag') tags.push(tag.name);
if (tag.type === 'artist') artists.push(tag.name);
if (tag.type === 'category') categories.push(tag.name);
if (tag.type === 'group') groups.push(tag.name);
if (tag.type === 'parody') parodies.push(tag.name);
if (tag.type === 'character') characters.push(tag.name);
if (tag.type === 'language') languages.push(tag.name);
}
}
if (tags.length) info += '\r\n' + 'Tags: ' + tags.join(', ');
if (categories.length) info += '\r\n' + 'Categories: ' + categories.join(', ');
if (groups.length) info += '\r\n' + 'Groups: ' + groups.join(', ');
if (parodies.length) info += '\r\n' + 'Parodies: ' + parodies.join(', ');
if (characters.length) info += '\r\n' + 'Characters: ' + characters.join(', ');
if (languages.length) info += '\r\n' + 'Languages: ' + languages.join(', ');
info += '\r\n\r\n' + 'Pages: ' + total;
info += '\r\n' + 'Uploaded at: ' + new Date(gallery.upload_date * 1000).toLocaleString() + '\r\n';
if (debug) console.log(info);
return info;
}
function genZip() {
zip.file('info.txt', getInfo());
zip
.generateAsync(
{
type: 'blob',
compression: 'STORE',
streamFiles: true, // Less memory but less compatibility, https://stuk.github.io/jszip/documentation/api_jszip/generate_async.html#streamfiles-option
},
function updateCallback(metadata) {
$download.html('<i class="fa fa-file-archive"></i> ' + metadata.percent.toFixed(2) + ' %');
}
)
.then(
function (blob) {
var filename = gallery.title[outputName] || gallery.title['english']; // e.g. #321311
var zipName = filename.replace(/\s+/g, '-') + '.' + comicId + '.' + outputExt;
//var zipName = `${filename}[${final}P].${outputExt}`;
zipName.replace(/・/g, '·'); // compatibility for MangaMeeya
$download
.html('<i class="fa fa-check"></i> Complete')
.css('backgroundColor', hasErr ? 'red' : 'green')
.attr({
href: 'javascript:void(0);',
download: zipName,
});
const fileStream = streamSaver.createWriteStream(zipName, {
size: blob.size,
});
const readableStream = blob.stream();
window.FSwriter = fileStream.getWriter();
const reader = readableStream.getReader();
const pump = () =>
reader
.read()
.then((res) => (res.done ? window.FSwriter.close() : window.FSwriter.write(res.value).then(pump)));
pump(); // Firefox does not support pipeTo() yet.
doc.title = '[⇓] ' + filename;
if (debug) console.log('COMPLETE');
end();
},
function (reason) {
$download.html('<i class="fa fa-exclamation"></i> Fail').css('backgroundColor', 'red');
doc.title = '[x] ' + gallery.title[outputName];
if (debug) console.error(reason, 'ERROR');
end();
}
);
}
function dlImg(current, success, error) {
var url = images[current].url,
filename = url.replace(/.*\//g, '');
filename = ('000' + filename).slice(-8);
if (debug) console.log(filename, 'progress');
GM.xmlHttpRequest({
method: 'GET',
url: url,
responseType: 'arraybuffer',
onload: function (response) {
final++;
success(response, filename);
},
onerror: function (err) {
if (images[current].attempt < 1) {
final++;
error(err, filename);
return;
}
setTimeout(function () {
if (debug) console.log(filename, 'retry ' + images[current].attempt);
dlImg(current, success, error);
images[current].attempt--;
}, 2000);
},
});
}
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++) {
if (debug) console.log(images[current].url, 'download');
dlImg(
current,
function (response, filename) {
zip.file(filename, response.response);
if (debug) console.log(filename, 'success');
next();
},
function (err, filename) {
hasErr = true;
// zip.file(filename + '_error.txt', err.statusText + '\r\n' + err.finalUrl);
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 gallery = JSON.parse(JSON.stringify(window._gallery));
if (debug) console.log(gallery, 'gallery');
if (!gallery) return;
var zip = new JSZip(),
current = 0,
final = 0,
total = gallery.num_pages,
images = gallery.images.pages,
hasErr = false,
$_download = $('#download-torrent, #download'),
$download,
$config,
$configPanel,
doc = document,
$win = $(window),
comicId = gallery.id;
if (!$_download.length) return;
GM_config.open();
$configPanel = $('#nHentaiDlConfig');
window.URL = window.URL || window.webkitURL;
$download = $_download.clone();
$download.removeAttr('id');
$download.removeClass('btn-disabled');
$download.attr('href', '#download');
$download.find('.top').html('No login required<br>No sign up required<i></i>');
$download.append('<span> as ' + outputExt.toUpperCase() + '</span>');
$download.insertAfter($_download);
$download.before('\n');
$download.css('backgroundColor', 'cornflowerblue').one('click', function (e) {
e.preventDefault();
if (debug) console.time('nHentai');
if (debug) console.log({ outputExt, outputName, threading });
if (threading < 1) threading = 1;
if (threading > 32) threading = 32;
$win.on('beforeunload', function () {
return 'Progress is running...';
});
$download.html('<i class="fa fa-cog fa-spin"></i> Waiting...').css('backgroundColor', 'orange');
images = images.map(function (img, index) {
return {
url:
'https://i.nhentai.net/galleries/' +
gallery.media_id +
'/' +
(index + 1) +
'.' +
{ j: 'jpg', p: 'png', g: 'gif' }[img.t],
attempt: 3,
};
});
if (debug) console.log(images, 'images');
addZip();
});
$configPanel.toggle();
$config = $_download.clone();
$config.removeAttr('id');
$config.removeClass('btn-disabled');
$config.attr('href', 'javascript:void(0);');
$config.css('min-width', '12px');
$config.html('<i class="fa fa-cog loader" />');
$config.insertAfter($download);
$config.before('\n');
$config.on('click', function () {
$configPanel.toggle('fast');
});
if (GM_config.get('hideTorrentBtn') == true) $_download.hide();
})(jQuery, unsafeWindow);