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Hacker News Show HN Open Source Filter

Filters Hacker News Show submissions to only show open-source projects, removes clutter, and re-ranks items.

  1. // ==UserScript==
  2. // @name         Hacker News Show HN Open Source Filter
  3. // @namespace    http://tampermonkey.net/
  4. // @version      0.4
  5. // @description  Filters Hacker News Show submissions to only show open-source projects, removes clutter, and re-ranks items.
  6. // @author       sm18lr88 (https://github.com/sm18lr88)
  7. // @license      MIT
  8. // @match        https://news.ycombinator.com/show
  9. // @match        https://news.ycombinator.com/show*
  10. // @grant        none
  11. // ==/UserScript==
  12.  
  13. (function() {
  14.     'use strict';
  15.  
  16.     const OPEN_SOURCE_HOSTS = [
  17.         "github.com",
  18.         "gitlab.com",
  19.         "bitbucket.org",
  20.         "sourceforge.net",
  21.         "github.io",
  22.         "codeberg.org",
  23.         // Add more known open-source hosting domain suffixes if needed
  24.     ];
  25.  
  26.     /**
  27.      * Removes the "Show HN: " prefix from titles.
  28.      */
  29.     function removeShowHnPrefix() {
  30.         const titles = document.querySelectorAll('#hnmain .titleline > a');
  31.         titles.forEach(title => {
  32.             if (title.textContent.startsWith('Show HN: ')) {
  33.                 title.textContent = title.textContent.replace('Show HN: ', '');
  34.             }
  35.         });
  36.     }
  37.  
  38.     /**
  39.      * Checks if a URL points to a known open-source repository or project page.
  40.      * @param {string} urlString - The URL to check.
  41.      * @returns {boolean} True if it's considered an open-source link, false otherwise.
  42.      */
  43.     function isRepoLink(urlString) {
  44.         if (!urlString) return false;
  45.         try {
  46.             const url = new URL(urlString); // Handles absolute URLs
  47.             const hostname = url.hostname.toLowerCase();
  48.             // Check if the hostname or a parent domain is in our list
  49.             if (OPEN_SOURCE_HOSTS.some(host => hostname === host || hostname.endsWith('.' + host))) {
  50.                 return true;
  51.             }
  52.         } catch (e) {
  53.             // Likely a relative URL (e.g., "item?id=...") or invalid.
  54.             // These are not considered direct open-source repo links.
  55.             return false;
  56.         }
  57.         return false;
  58.     }
  59.  
  60.     /**
  61.      * Filters submissions to keep only those linking to open-source projects.
  62.      * Removes the submission row, its subtext row, and its spacer row if not open source.
  63.      */
  64.     function filterSubmissions() {
  65.         const submissions = document.querySelectorAll('#hnmain tr.athing.submission');
  66.         submissions.forEach(submissionRow => {
  67.             const titleLink = submissionRow.querySelector('.titleline > a');
  68.             if (titleLink) {
  69.                 const url = titleLink.href;
  70.                 if (!isRepoLink(url)) {
  71.                     const subtextRow = submissionRow.nextElementSibling; // This is the row with score, user, comments
  72.                     const spacerRow = subtextRow ? subtextRow.nextElementSibling : null; // This is the <tr class="spacer">
  73.  
  74.                     submissionRow.remove();
  75.                     if (subtextRow) {
  76.                         subtextRow.remove();
  77.                     }
  78.                     // Ensure spacerRow is indeed a spacer before removing
  79.                     if (spacerRow && spacerRow.classList.contains('spacer')) {
  80.                         spacerRow.remove();
  81.                     }
  82.                 }
  83.             }
  84.         });
  85.     }
  86.  
  87.     /**
  88.      * Removes unnecessary clutter from the page, like the intro "rules" div and footer links.
  89.      */
  90.     function removePageClutter() {
  91.         // Remove the "Please read the Show HN rules..." div
  92.         // This div is a child of a TD and contains a link to 'showhn.html'
  93.         const allTdDivs = document.querySelectorAll('#hnmain td > div');
  94.         allTdDivs.forEach(div => {
  95.             if (div.querySelector('a[href="showhn.html"]') && div.textContent.includes("Please read the Show HN rules")) {
  96.                 div.remove();
  97.             }
  98.         });
  99.  
  100.         // Remove the footer yclinks (Guidelines, FAQ, Lists, API, etc.)
  101.         const yclinksSpan = document.querySelector('span.yclinks');
  102.         if (yclinksSpan) {
  103.             // Optionally remove the <br> tags and Search form if the whole center block is to be cleaned.
  104.             // For now, just removing the yclinks span itself.
  105.             yclinksSpan.remove();
  106.             // If you want to remove the surrounding <center> tag that also contains the search bar:
  107.             // const centerContainer = yclinksSpan.closest('center');
  108.             // if (centerContainer) centerContainer.remove();
  109.         }
  110.     }
  111.  
  112.     /**
  113.      * Re-numbers the rank of the remaining visible items.
  114.      */
  115.     function updateRanks() {
  116.         const remainingRanks = document.querySelectorAll('#hnmain tr.athing.submission .rank');
  117.         remainingRanks.forEach((rankSpan, index) => {
  118.             rankSpan.textContent = `${index + 1}.`;
  119.         });
  120.     }
  121.  
  122.     // --- Execute the functions ---
  123.     removeShowHnPrefix();
  124.     filterSubmissions();
  125.     removePageClutter();
  126.     updateRanks();
  127.  
  128. })();