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CSDNCodeCopier

Down with CSDN paywall. Adds buttons for copying content from code snippets in CSDN blog posts

  1. // ==UserScript==
  2. // @name         CSDNCodeCopier
  3. // @namespace    https://blog.csdn.net/
  4. // @version      1.0
  5. // @description  Down with CSDN paywall. Adds buttons for copying content from code snippets in CSDN blog posts
  6. // @author       aisuneko
  7. // @match        *://blog.csdn.net/*/article/details/*
  8. // @match        *://*.blog.csdn.net/article/details/*
  9. // @grant        none
  10. // ==/UserScript==
  11. async function copyToClipboard(text){
  12.     try {
  13.         await navigator.clipboard.writeText(text);
  14.     } catch (error) {
  15.         console.error(error.message);
  16.     }
  17. }
  18.  
  19. function unescapeHTML(html) {
  20.     return html.replace(/&lt;/g,'<').replace(/&gt;/g,'>').replace(/&amp;/g,'&');
  21. }
  22.  
  23. (function() {
  24.     'use strict';
  25.     let taglist = ["set-code-show", "set-code-hide"];
  26.     let snippetlist = [];
  27.     taglist.forEach((tag)=>{
  28.         let tmparr = Array.from(document.getElementsByClassName(tag));
  29.         snippetlist.push(...tmparr);
  30.     });
  31.     for(let i of snippetlist){
  32.         let button = document.createElement("button");
  33.         button.textContent = "Copy Code";
  34.         let code = i.getElementsByTagName("code")[0].innerHTML.toString().replaceAll(/<[^>]*>/gi,"");
  35.         button.addEventListener("click", () => {
  36.             copyToClipboard(unescapeHTML(code));
  37.             button.textContent = "Copied!";
  38.         });
  39.         i.appendChild(button);
  40.     }
  41.     Array.from(document.getElementsByClassName("hljs-button signin active")).forEach((el)=>{el.remove()});
  42. })();