// ==UserScript==
// @name 京东读书pdf下载
// @namespace http://tampermonkey.net/
// @version 0.1
// @description try to take over the world!
// @author You
// @match https://cread.jd.com/read/startRead.action?bookId=*
// @grant none
// ==/UserScript==
function loadStyle(url){
var link = document.createElement('link');
link.type = 'text/css';
link.rel = 'stylesheet';
link.href = url;
var head = document.getElementsByTagName('head')[0];
head.appendChild(link);
}
function loadScript(url, callback){
var script = document.createElement ("script")
script.type = "text/javascript";
if (script.readyState){ //IE
script.onreadystatechange = function(){
if (script.readyState == "loaded" || script.readyState == "complete"){
script.onreadystatechange = null;
if(typeof(callback) == 'function')
callback();
}
};
} else { //Others
script.onload = function(){
if(typeof(callback) == 'function')
callback();
};
}
script.src = url;
document.getElementsByTagName("head")[0].appendChild(script);
}
//获取元素在数组的下标
Array.prototype.indexOf = function(val) {
for (var i = 0; i < this.length; i++) {
if (this[i] == val) {
return i;
};
}
return -1;
};
//根据数组的下标，删除该下标的元素
// Array.prototype.remove = function(val) {
// var index = this.indexOf(val);
// if (index > -1) {
// this.splice(index, 1);
// }
// };
function range(start, stop, step = 1) {
return Array(Math.ceil((stop - start) / step))
.fill(start)
.map((x, y) => x + y * step)
}
function Uint8ToString(u8a){
var CHUNK_SZ = 0x8000;
var c = [];
for (var i=0; i < u8a.length; i+=CHUNK_SZ) {
c.push(String.fromCharCode.apply(null, u8a.subarray(i, i+CHUNK_SZ)));
}
return c.join("");
}
function fakeClick(obj) {
var ev = document.createEvent("MouseEvents");
ev.initMouseEvent("click", true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
obj.dispatchEvent(ev);
}
function exportRaw(name, data) {
var urlObject = window.URL || window.webkitURL || window;
var export_blob = new Blob([data]);
var save_link = document.createElementNS("http://www.w3.org/1999/xhtml", "a")
save_link.href = urlObject.createObjectURL(export_blob);
save_link.download = name;
fakeClick(save_link);
}
// 要保存的信息
//
var ready_flag = false;
function isReady(){
return globle.hasOwnProperty('bookId') && globle.hasOwnProperty('pager')
}
// 判断是否为pdf书（epub不运行）
function isPDF(){
return globle.hasOwnProperty('_getUrl');
}
function get_metadata(callback){
// var url = document.referrer;
// 手动构造详情业url
var url = "https://gx.jd.com/gx/gx_bookDetail.action?bookId="+globle.bookId;
globle['Download_Info'] = {'url':url,'obj':'','metadata':{}};
var metadata = globle['Download_Info']['metadata']
var book_info = globle.dataLoader.bookInfoLoader.bookInfo.content.bookInfo
metadata['title'] = book_info.bookName;
metadata['writer'] = book_info.author;
metadata['Cover_url'] = book_info.bookUrl;
}
function export_info(){
var title = globle['Download_Info']['metadata']['title'];
var writer = globle['Download_Info']['metadata']['writer'];
var _b = writer?'_'+writer:'';
var book_name = title + _b;
g = globle;
g['book_name'] = book_name;
var obj = JSON.stringify(g, function(key, value) {
if (typeof value === 'object' && value !== null) {
if (key == 'parent') {
// Circular reference found, discard key
return;
}
}
return value;
}, 4);
exportRaw(g['book_name']+'_jd_pdf_info.json', obj);
}
// ui部分
function set_progress(n){
if(window.element){
element.progress('mprogress', n.toString()+'%');
}
}
function set_status(msg){
$('#mstatus').text(msg);
}
function show_msg(msg){
var s = ''
for(var i=0; i<arguments.length;i++){
s+=' '+String(arguments[i]);
}
console.log(s);
if(typeof(layer.msg) == 'function'){
layer.msg(s, {
offset: 't',
anim: 5,
area: 300
});
}
}
function fun_wait(){
show_msg('[Wait] ...');
set_status('[Wait] ...');
}
var fun_btn = fun_wait;
// 下载
function fun_do(){
show_msg('Downloading...');
get_metadata();
export_info();
show_msg('[OK] download');
set_status('[OK] download');
set_progress(100);
}
if(isPDF()){
loadStyle("https://www.layuicdn.com/layui/css/layui.css")
loadScript("https://www.layuicdn.com/layui/layui.all.js", function(){
// 由于引入的为all.js 模块都一次性加载，因此不用执行 layui.use() 来加载对应模块，直接使用即可layer,element
layer.open({
type: 1,
content: '<div style="padding:20px;text-align: center;"><h3>Github:<a style="color: #23696f" href="https://github.com/ygcaicn/keledge" target="_blank">Star</a></h3><br><p>Status:<span id="mstatus">Ready!</span></p></div> <div class="layui-progress layui-progress-big" lay-filter="mprogress" lay-showpercent="true"><div class="layui-progress-bar" lay-percent="0%"></div></div>',
skin: 'layui-layer-molv',
shade: 0,
btnAlign: 'c' ,
offset: 'rt',
area:'300px',
btn: ['Download', 'Cancel'],
btn1: function(){
fun_btn();
return false;
},
btn2: function(){
return false;
}
});
window.element = layui.element;
window.element.init();
set_status('Wait initing...');
})
}
// 等待ready
var wait_ready_timer;
wait_ready_timer = setInterval(function(){
if(isReady()){
ready_flag = true;
clearInterval(wait_ready_timer);
if(isPDF()){
show_msg('[OK] ready');
set_status('Ready');
set_progress(0);
fun_btn = fun_do;
}
else {
show_msg('[Not] pdf book');
}
}
else {
if(isPDF()){
show_msg('[Wait] ...');
set_status('[Wait] ...');
}
}
},500)
