自动获取并合并PDF
// ==UserScript==
// @name Oxford Academic导出PDF
// @namespace https://qinlili.bid
// @version 1.0.0
// @description 自动获取并合并PDF
// @author 琴梨梨
// @license WTFPL
// @match https://academic.oup.com/edited-volume/*
// @icon https://oup.silverchair-cdn.com/UI/app/img/v-638282418223920402/apple-touch-icon.png
// @run-at document-idle
// @require https://lib.baomitu.com/pdf-lib/1.17.1/pdf-lib.min.js#sha512-z8IYLHO8bTgFqj+yrPyIJnzBDf7DDhWwiEsk4sY+Oe6J2M+WQequeGS7qioI5vT6rXgVRb4K1UVQC5ER7MKzKQ==
// @grant GM_xmlhttpRequest
// @grant GM_registerMenuCommand
// ==/UserScript==
(async function() {
//CODENAME:Carboxylate
'use strict';
const config={
//带目录导出，需要依赖闭源的PSPDFKIT，目前暂不可用，有待进一步开发
writeOutline:false,
//去除账号标识，开发中
removeAccountInfo:false
};
GM.registerMenuCommand("原神，启动！", () => {
location.href="https://ys.mihoyo.com/";
});
const dlFile = (link, name) => {
let eleLink = document.createElement('a');
eleLink.download = name;
eleLink.style.display = 'none';
eleLink.href = link;
document.body.appendChild(eleLink);
eleLink.click();
document.body.removeChild(eleLink);
};
const loadScriptAsync = link => {
return new Promise(resolve => {
let script = document.createElement("script");
script.src = link;
script.onload = resolve;
document.body.appendChild(script);
});
};
switch(location.host){
case("academic.oup.com"):{
//文档详情页
console.log("关注笙歌喵~关注帅比笙歌超可爱OvO谢谢喵~");
console.log("Carboxylate 1.0.0");
const titleDiv=document.getElementsByClassName("book-bottom-section__title-wrap")[0];
let dlBtn=document.createElement("button");
dlBtn.innerText="下载全部PDF";
titleDiv.appendChild(dlBtn);
dlBtn.onclick=async ()=>{
dlBtn.onclick=null;
//阶段1：建立目录结构
dlBtn.innerText="0% 分析目录结构";
const catagory=document.getElementsByClassName("bookToc")[0];
let parsedCatagory={
title:document.getElementsByClassName("book-info__title")[0].innerText.trim(),
author:document.getElementsByClassName("book-info__author-link")[0].innerText.trim(),
chapters:[]
};
const parseChapter=(ele,depth)=>{
if(ele.getElementsByClassName("collections-child-list").length==0||ele.getElementsByClassName("collections-child-list")[0].children.length==0){
//顶级章节，直接处理
[].forEach.call(ele.children,sub=>{
if(sub.className=="tocLink"&&sub.tagName=="A"){
//获取标题和链接
parsedCatagory.chapters.push({
title:(sub.getElementsByClassName("tocLink-label")[0]?sub.getElementsByClassName("tocLink-label")[0].innerText:"")+" "+sub.getElementsByClassName("tocLink-title")[0].innerText,
link:sub.href,
depth:depth,
child:false,
debug:sub
});
}
})
}else{
//读取子章节
parsedCatagory.chapters.push({
title:(ele.getElementsByClassName("tocLink-label")[0]?ele.getElementsByClassName("tocLink-label")[0].innerText:"")+" "+ele.getElementsByClassName("tocLink-title")[0].innerText,
link:null,
depth:depth,
child:true,
debug:ele
});
//递归遍历
[].forEach.call(ele.getElementsByTagName("ul")[0].getElementsByTagName("li"),ele=>{
parseChapter(ele,depth+1);
});
}
}
[].forEach.call(catagory.children,ele=>{
if(ele.tagName=="LI"){
parseChapter(ele,0);
}
});
console.log(parsedCatagory);
//阶段2：解析PDF地址
dlBtn.innerText="5% 解析PDF地址";
let count=0;
for(let chapter of parsedCatagory.chapters){
if(chapter.child==false){
//可下载的章节，需要解析地址
let chapterRequest=await fetch(chapter.link, {
"referrer": location.href,
"method": "GET",
"mode": "cors",
"credentials": "include"
});
let chapterPage=await chapterRequest.text();
const parser = new DOMParser();
const chapterDoc = parser.parseFromString(chapterPage, "text/html");
chapter.pdflink=chapterDoc.getElementsByClassName("at-pdfLink")[0].href;
};
count++;
dlBtn.innerText=(5+25*count/parsedCatagory.chapters.length).toFixed(2)+"% 解析PDF地址["+count+"/"+parsedCatagory.chapters.length+"]";
};
console.log(parsedCatagory);
//阶段3：分段下载PDF
dlBtn.innerText="30% 下载PDF";
count=0;
for(let chapter of parsedCatagory.chapters){
if(chapter.child==false){
//异步跨域下载PDF
function asyncFetch(){
return new Promise(resolve => {
let pic=GM_xmlhttpRequest({
method: "GET", url: chapter.pdflink, responseType: "blob", onload: (res) => {
console.log(res.response);
chapter.pdffile=res.response;
resolve();
}
})
});
}
await asyncFetch();
};
count++;
dlBtn.innerText=(30+60*count/parsedCatagory.chapters.length).toFixed(2)+"% 下载PDF["+count+"/"+parsedCatagory.chapters.length+"]";
};
console.log(parsedCatagory);
//阶段4：合并PDF导出
dlBtn.innerText="90% 合并PDF";
const pdfDoc = await PDFLib.PDFDocument.create();
count=0;
pdfDoc.setTitle(parsedCatagory.title);
pdfDoc.setAuthor(parsedCatagory.author);
pdfDoc.setCreator("Carboxylate By QINLILI");
pdfDoc.setCreationDate(new Date());
pdfDoc.setModificationDate(new Date());
//合并PDF并记录页码
for(let chapter of parsedCatagory.chapters){
if(chapter.child==false){
//合并PDF
const pdfObj=await PDFLib.PDFDocument.load(await chapter.pdffile.arrayBuffer());
const copiedPages = await pdfDoc.copyPages(pdfObj, pdfObj.getPageIndices());
copiedPages.forEach((page) => pdfDoc.addPage(page));
chapter.pages=copiedPages.length;
};
count++;
dlBtn.innerText=(90+6*count/parsedCatagory.chapters.length).toFixed(2)+"% 合并PDF["+count+"/"+parsedCatagory.chapters.length+"]";
};
console.log(parsedCatagory);
//导出文件
dlBtn.innerText="96% 写入目录";
const mergedPdfFile = await pdfDoc.save();
if(config.writeOutline){
await loadScriptAsync("https://cdn.jsdelivr.net/npm/[email protected]/dist/pspdfkit.min.js");
let foo=document.createElement("div");
foo.className="foo";
foo.style.width="100vw";
foo.style.height="100vh";
foo.style.display="none";
document.body.appendChild(foo);
let instance=await PSPDFKit.load({
baseUrl:"https://cdn.jsdelivr.net/npm/[email protected]/dist/",
document: mergedPdfFile.buffer,
container:'.foo'
});
for(let chapter of parsedCatagory.chapters){
const bookmark = new PSPDFKit.Bookmark({
name: chapter.title,
action: new PSPDFKit.Actions.GoToAction({ pageIndex: count })
});
await instance.create(bookmark);
if(chapter.child==false){
//小标题累计页码
count+=chapter.pages;
};
};
dlBtn.innerText="98% 导出文件 带目录导出耗时极长，请保持耐心";
const documentBuffer = await instance.exportPDF();
const pdfFile=new Blob([documentBuffer]);
dlFile(URL.createObjectURL(pdfFile),parsedCatagory.title+".pdf")
}else{
dlBtn.innerText="98% 导出文件";
const pdfFile=new Blob([mergedPdfFile]);
dlFile(URL.createObjectURL(pdfFile),parsedCatagory.title+".pdf")
};
dlBtn.innerText="100% 下载成功";
};
break;
};
default:{
break;
}
}
})();