自动打开PDF，如果没有找到PDF链接则重定向到西安交通大学图书馆。
// ==UserScript==
// @name 自动打开PDF,否则重定向至XJTU_VPN
// @version 1.2
// @author Pencilheart
// @description 自动打开PDF，如果没有找到PDF链接则重定向到西安交通大学图书馆。
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// @grant GM_registerMenuCommand
// @grant GM_setValue
// @grant GM_getValue
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// @namespace https://greasyfork.org/users/703434
// ==/UserScript==
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"use strict";
// 获取用户选项
let autoOpenPDF = GM_getValue("autoOpenPDF", false);
let enableRedirect = GM_getValue("enableRedirect", false);
// 注册菜单
function registerMenu() {
GM_registerMenuCommand(
`重定向功能：${enableRedirect ? "✅ 开启" : "❌ 关闭"}`,
() => {
enableRedirect = !enableRedirect;
GM_setValue("enableRedirect", enableRedirect);
location.reload();
}
);
GM_registerMenuCommand(
`自动打开PDF功能：${autoOpenPDF ? "✅ 开启" : "❌ 关闭"}`,
() => {
autoOpenPDF = !autoOpenPDF;
GM_setValue("autoOpenPDF", autoOpenPDF);
location.reload();
}
);
}
registerMenu();
// 重定向规则
const urlMappings = [
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baseUrl: "https://www.sciencedirect.com/",
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url.match(/\/pii\/([A-Za-z0-9]+)/)[1] + "?redirected=true",
},
{
baseUrl: "https://journals.sagepub.com/",
transform: (url) => url.replace(
"https://journals.sagepub.com/doi/",
"http://sage.cnpereading.com/paragraph/article/?doi="
),
},
{
baseUrl: "https://asmedigitalcollection.asme.org/",
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"asmedigitalcollection.asme.org/",
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baseUrl: "https://pubs.acs.org/",
transform: (url) => url.replace(
"pubs.acs.org/",
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];
// 直接重定向规则
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{
urlMatch: ["journals.sagepub.com", "science.org"], // 匹配特定网站
redirect: true, // 添加一个标记，直接重定向
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// PDF选择器映射
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const specificSiteRules = [
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urlMatch: "http://sage.cnpereading.com/paragraph/article/",
elementSelector: 'a[href*="/paragraph/download/?doi="]',
},
{
urlMatch: "www.semanticscholar.org",
elementSelector: 'a[href*="doi"]',
},
{
urlMatch: "ceramics.onlinelibrary.wiley.com",
elementSelector: 'a[href^="/doi"]',
},
];
// 当前页面检查逻辑
function checkAndHandlePDFLinks() {
// 如果已经打开过 PDF，跳过自动打开
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return false;
}
// 检查是否有特定规则
for (const rule of specificSiteRules) {
if (currentURL.includes(rule.urlMatch)) {
const targetElement = document.querySelector(rule.elementSelector);
if (targetElement) {
const href = targetElement.getAttribute('href');
if (autoOpenPDF) {
history.pushState(null, null, window.location.href); // 将当前页面的 URL 推入历史记录栈
window.location.replace(href);
sessionStorage.setItem('pdfOpened', 'true'); // 标记已经打开 PDF
}
return true;
}
}
}
// 检查常规的 PDF 选择器
for (const selector of pdfSelectors) {
const targetElement = document.querySelector(selector);
if (targetElement) {
const href = targetElement.getAttribute('href');
if (autoOpenPDF) {
history.pushState(null, null, window.location.href); // 将当前页面的 URL 推入历史记录栈
window.location.replace(href);
sessionStorage.setItem('pdfOpened', 'true'); // 标记已经打开 PDF
}
return true;
}
}
return false;
}
// 直接重定向逻辑
function handleDirectRedirect() {
for (const rule of directRedirectRules) {
if (rule.urlMatch.some((domain) => currentURL.includes(domain)) && rule.redirect) {
for (const mapping of urlMappings) {
if (currentURL.startsWith(mapping.baseUrl) && !currentURL.includes("redirected=true")) {
window.location.href = mapping.transform(currentURL) + "?redirected=true";
return true;
}
}
}
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return false;
}
// 自动重定向逻辑
function handleRedirect() {
if (!enableRedirect || handleDirectRedirect()) return;
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console.log("当前URL:", currentURL);
window.addEventListener("load", () => {
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if (handleDirectRedirect() || checkAndHandlePDFLinks()) {
return; // 如果找到符合条件的链接，直接退出逻辑
}
// 动态监听逻辑
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observer.disconnect(); // 找到目标后停止监听
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});
observer.observe(document.body, { childList: true, subtree: true });
// 延迟检测逻辑，加载完成后再检查一次
setTimeout(() => {
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observer.disconnect(); // 停止观察
handleRedirect(); // 如果没有检测到 PDF 链接，执行跳转
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}, 2000); // 延迟 2 秒，确保 DOM 变化完成
});
// 检查 MutationObserver（用于动态加载的页面）
const observer = new MutationObserver(() => {
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observer.observe(document.body, { childList: true, subtree: true });
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