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GitHub file list beautifier

Adds colors to files by type, displays small images in place of file-type icons in a repository source tree

当前为 2020-06-24 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name        GitHub file list beautifier
  3. // @description Adds colors to files by type, displays small images in place of file-type icons in a repository source tree
  4. // @license     MIT License
  5. //
  6. // @version     3.0.8
  7. //
  8. // @match       https://github.com/*
  9. //
  10. // @grant       none
  11. // @run-at      document-start
  12. //
  13. // @author      wOxxOm
  14. // @namespace   wOxxOm.scripts
  15. // @icon        https://octodex.github.com/images/murakamicat.png
  16. // ==/UserScript==
  17.  
  18. 'use strict';
  19.  
  20. let savedConfig = {};
  21. try {
  22.   savedConfig = JSON.parse(localStorage.FileListBeautifier) || {};
  23. } catch (e) {}
  24.  
  25. const config = Object.assign({},
  26.   ...Object.entries({
  27.     iconSize: 24,
  28.     colorSeed1: 13,
  29.     colorSeed2: 1299721,
  30.     colorSeed3: 179426453,
  31.   }).map(([k, v]) => ({[k]: +savedConfig[k] || v})));
  32.  
  33. const IMG_CLS = 'wOxxOm-image-icon';
  34. const styleQueue = [];
  35. const {sheet} = document.head.appendChild(Object.assign(document.createElement('style'), {
  36.   textContent: /*language=CSS*/ `
  37.   .${IMG_CLS} {
  38.     max-width: ${config.iconSize}px;
  39.     max-height: ${config.iconSize}px;
  40.     width: auto;
  41.     height: auto;
  42.     margin: auto;
  43.     position: absolute;
  44.     top: 0;
  45.     left: 0;
  46.     right: 0;
  47.     bottom: 0;
  48.   }
  49.   .wOxxOm-image-cell {
  50.     position: relative;
  51.     padding: 0;
  52.     margin: 0 10px 0 -6px;
  53.     min-width: ${config.iconSize + 4}px;
  54.     line-height: inherit;
  55.   }
  56.   .wOxxOm-image-cell svg {
  57.     display: none;
  58.   }
  59.   a[file-type=":folder"] {
  60.     font-weight: bold;
  61.   }
  62.   `.replace(/;/g, '!important;'),
  63. }));
  64.  
  65. const filetypes = {};
  66. const ME = Symbol(GM_info.script.name);
  67. const ob = new MutationObserver(() => {
  68.   if (document.getElementById('files')) {
  69.     ob.disconnect();
  70.     start();
  71.   }
  72. });
  73.  
  74. let lumaBias, lumaFix, lumaAmp;
  75.  
  76. start();
  77.  
  78. function start() {
  79.   beautify();
  80.   ob.observe(document, {subtree: true, childList: true});
  81. }
  82.  
  83. // postpone observing until the parser can breathe after the initial burst of activity during page load
  84. function beautify() {
  85.   const el = document.getElementById('files');
  86.   const table = el && el.parentElement.querySelector('.js-navigation-container');
  87.   if (!table)
  88.     return;
  89.   for (const a of table.getElementsByClassName('js-navigation-open')) {
  90.     if (!a.hasAttribute('href') || ME in a)
  91.       continue;
  92.     a[ME] = true;
  93.     const row = a.closest('.js-navigation-item');
  94.     if (row && row.querySelector('.octicon-file-directory')) {
  95.       a.setAttribute('file-type', ':folder');
  96.       continue;
  97.     }
  98.  
  99.     const ext = a.href.match(/\.(\w+)$|$/)[1] || ':empty';
  100.     a.setAttribute('file-type', ext);
  101.     if (!filetypes[ext])
  102.       addFileTypeStyle(ext);
  103.  
  104.     if (/^(png|jpe?g|bmp|gif|cur|ico)$/.test(ext)) {
  105.       const m = a.href.match(/github\.com\/(.+?\/)blob\/(.*)$/);
  106.       const icon = row.querySelector('.octicon');
  107.       if (!m || !icon)
  108.         continue;
  109.       const next = icon.nextElementSibling;
  110.       if (next && next.classList.contains(IMG_CLS))
  111.         continue;
  112.       icon.insertAdjacentElement('afterend', Object.assign(
  113.         document.createElement('img'), {
  114.           className: IMG_CLS,
  115.           src: `https://raw.githubusercontent.com/${m[1]}${m[2]}`,
  116.         }));
  117.       icon.parentElement.classList.add('wOxxOm-image-cell');
  118.     }
  119.   }
  120. }
  121.  
  122. function addFileTypeStyle(type) {
  123.   filetypes[type] = true;
  124.   if (!styleQueue.length)
  125.     requestAnimationFrame(commitStyleQueue);
  126.   styleQueue.push(type);
  127. }
  128.  
  129. function commitStyleQueue() {
  130.   if (!lumaAmp) initLumaScale();
  131.   const seed2 = config.colorSeed2;
  132.   const seed3 = config.colorSeed3;
  133.   for (const type of styleQueue) {
  134.     const hash = calcSimpleHash(type);
  135.     const H = hash % 360;
  136.     const Hq = H / 60;
  137.     const S = hash * seed2 % 50 + 50 | 0;
  138.     const redFix = (Hq < 1 ? 1 - Hq : Hq > 4 ? (Hq - 4) / 2 : 0);
  139.     const blueFix = (Hq < 3 || Hq > 5 ? 0 : Hq < 4 ? Hq - 3 : 5 - Hq) * 3;
  140.     const L = hash * seed3 % lumaAmp + lumaBias + (redFix + blueFix) * lumaFix * S / 100 | 0;
  141.     sheet.insertRule(/*language=CSS*/ `
  142.       a[file-type="${type}"]:not(#foo) {
  143.         color: hsl(${H},${S}%,${L}%) !important;
  144.       }
  145.     `);
  146.   }
  147.   styleQueue.length = 0;
  148. }
  149.  
  150. function calcSimpleHash(text) {
  151.   let hash = 0;
  152.   for (let i = 0, len = text.length; i < len; i++)
  153.     hash = ((hash << 5) - hash) + text.charCodeAt(i);
  154.   return Math.abs(hash * config.colorSeed1 | 0);
  155. }
  156.  
  157. function initLumaScale() {
  158.   const [, r, g, b] = getComputedStyle(document.body).backgroundColor.split(/[^\d.]+/).map(parseFloat);
  159.   const isDark = (r * .2126 + g * .7152 + b * .0722) < 128;
  160.   [lumaBias, lumaAmp, lumaFix] = isDark ? [30, 50, 12] : [25, 15, 0];
  161. }