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北大论文平台下载工具，请勿传播下载的文件，否则后果自负。
当前为
// ==UserScript==
// @name PKU-Thesis-Download
// @namespace https://github.com/xiaotianxt
// @version 0.6
// @description 北大论文平台下载工具，请勿传播下载的文件，否则后果自负。
// @author xiaotianxt
// @match http://162.105.134.201/pdfindex.jsp?fid=*
// @match https://drm.lib.pku.edu.cn/pdfindex.jsp?fid=*
// @icon https://www.google.com/s2/favicons?sz=64&domain=pku.edu.cn
// @grant none
// @license GNU GPLv3
// ==/UserScript==
(function () {
"use strict";
const fid = $("#fid").val();
const totalPage = parseInt($("#totalPages").html().replace(/ \/ /, ""));
const baseUrl = "https://drm.lib.pku.edu.cn/jumpServlet?fid=" + fid;
const downloadButton = document.querySelector("#thumbtab").cloneNode(true);
downloadButton.innerHTML = `
<div class="panel-bg" style="background: url("data:image/png;base64,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") center center no-repeat;"></div>
<span class="panel-name">下载</span>
`;
document.querySelector("#btnList").appendChild(downloadButton);
downloadButton.addEventListener("click", download);
const resolutionRadioGroup = document.querySelector("#thumbtab").cloneNode(true);
resolutionRadioGroup.innerHTML = `
<div>
<input type="radio" name="resolution" id="standard" value="2f" checked> <label for="standard">标清</label>
<input type="radio" name="resolution" id="high" value="3f"> <label for="high">超清</label>
<input type="radio" name="resolution" id="super" value="5f"> <label for="super">巨清</label>
</div>
`
document.querySelector("#btnList").appendChild(resolutionRadioGroup);
const msgBox = downloadButton.querySelector("span");
async function download(e) {
e.preventDefault();
e.target.disabled = true;
await solveSrc().then(solveImg).then(solvePDF);
e.target.disabled = false;
}
/**
* 解析pdf图片链接
*/
async function solveSrc() {
async function downloadSrcInfo(url) {
return fetch(url)
.then((res) => res.json())
.then((json) => {
finished++;
msgBox.innerHTML = finished + "/" + page;
return json.list;
});
}
let urlPromise = [];
let page = 0;
let finished = 0;
for (; page < totalPage; page++) {
const url = baseUrl + "&page=" + page;
urlPromise.push(downloadSrcInfo(url));
msgBox.innerHTML = finished + "/" + page;
}
return Promise.all(urlPromise);
}
/**
* 下载图片
*/
async function solveImg(urls) {
async function downloadPdf(url, i) {
return fetch(url)
.then((res) => res.blob())
.then((blob) => {
const reader = new FileReader();
reader.readAsDataURL(blob);
return new Promise((resolve) => {
reader.onloadend = () => {
resolve(reader.result);
numFinished++;
msgBox.innerHTML = numFinished + "/" + numTotal;
};
});
});
}
// remove duplicated
const map = new Map();
const resolution = document.querySelector('input[name="resolution"]:checked').value;
urls.forEach((triple) => {
triple.forEach((item) => {
map.set(item.id, item.src.replace(/2f$/, resolution));
});
});
// sort and clear index
urls = [...map.entries()]
.sort((a, b) => a[0] - b[0])
.map((item) => item[1]);
// download images
const base64Promise = [];
let numFinished = 0;
let numTotal = 0;
urls.forEach((url) => {
base64Promise.push(downloadPdf(url));
numTotal++;
msgBox.innerHTML = numFinished + "/" + numTotal;
});
return Promise.all(base64Promise);
}
/**
* 拼接为pdf
* @param {*} base64s
*/
async function solvePDF(base64s) {
msgBox.innerHTML = "拼接中";
$.getScript(
"https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js",
(e) => {
const doc = new jspdf.jsPDF();
base64s.forEach((base64, index) => {
doc.addImage(base64, "JPEG", 0, 0, 210, 297);
index + 1 == base64s.length || doc.addPage();
});
msgBox.innerHTML = "保存中";
doc.save(document.title + ".pdf");
msgBox.innerHTML = "完成！";
}
);
}
})();