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GreasyFork script icon

On a script info page it shows its icon from the script meta block

当前为 2020-02-17 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name        GreasyFork script icon
  3. // @namespace   wOxxOm.scripts
  4. // @description On a script info page it shows its icon from the script meta block
  5. // @icon        https://icons.iconarchive.com/icons/custom-icon-design/mono-general-1/64/information-icon.png
  6. // @version     1.1.6
  7. // @author      wOxxOm
  8. // @match       https://greatest.deepsurf.us/*scripts/*
  9. // @include     /^https://(sleazy)fork.org/.*?scripts/.*?/
  10. // @exclude     /^https://(greasy|sleazy)fork\.org/([^/]+/)?scripts/(\D|$)/
  11. // @run-at      document-start
  12. // @connect-src *
  13. // @grant       GM_xmlhttpRequest
  14. // @grant       GM_setValue
  15. // @grant       GM_getValue
  16. // ==/UserScript==
  17.  
  18. var scriptID = location.href.match(/scripts\/(\d+)/)[1];
  19. var iconsrc = GM_getValue(scriptID);
  20.  
  21. if (iconsrc && iconsrc.match(/^data:image|https:/))
  22.   addIcon();
  23. else {
  24.   GM_xmlhttpRequest({
  25.     method: 'GET',
  26.     url: location.pathname.replace(/(scripts\/\d+[^/]+)(\/.*)?$/,'$1/code/1.user.js'),
  27.     timeout: 10000,
  28.     onload: function (r) {
  29.       var m = r.responseText.match(/\n\s*\/\/\s+@icon(?:url)?\s+(https?|data)(:(?:\/\/|image).*?)[\s\r\n]/i);
  30.       if (!m)
  31.         return;
  32.  
  33.       if (m[1] == 'https' || m[1] == 'data')
  34.         return addIcon(m[1]+m[2]);
  35.  
  36.       // download http icon and store it in script db if it's small
  37.       GM_xmlhttpRequest({
  38.         method: 'GET',
  39.         url: m[1]+m[2],
  40.         timeout: 10000,
  41.         headers: {'Accept':'image/png,image/*;q=0.8,*/*;q=0.5'},
  42.         overrideMimeType: 'text\/plain; charset=x-user-defined',
  43.         onload: function(ri) {
  44.           var rb = ri.response, rbl = rb.length;
  45.           if (rbl > 100000) {
  46.             console.log('Script icon exceeds 100k, ignoring');
  47.             return;
  48.           }
  49.  
  50.           var ext = ri.finalUrl.substr(ri.finalUrl.lastIndexOf('.')+1).toLowerCase();
  51.           var mime = ['png','bmp','gif'].indexOf(ext) >= 0 ? ext : ext.match(/'^jpe?g?/) ? 'jpeg' : ext=='ico' ? 'x-icon' : null;
  52.           if (!mime)
  53.             return;
  54.  
  55.           var rb8 = new Uint8Array(rbl);
  56.           for (var i=0; i<rbl; i++)
  57.             rb8[i] = rb.charCodeAt(i);
  58.           var rbs = String.fromCharCode.apply(null, rb8);
  59.  
  60.           addIcon('data:image/' + mime + ';base64,' + btoa(rbs));
  61.         }
  62.       });
  63.     }
  64.   });
  65. }
  66.  
  67. function addIcon(url) {
  68.   if (url)
  69.     iconsrc = url;
  70.  
  71.   var h2 = document.querySelector('#script-info header h2');
  72.   h2 ? __add(h2) : __wait();
  73.  
  74.   function __add(h2) {
  75.     if (!h2)
  76.       if (!(h2 = document.querySelector('#script-info header h2')))
  77.         return;
  78.  
  79.     h2.insertAdjacentHTML('afterbegin','<div style="\
  80.         position: absolute;\
  81.         width: 80px;\
  82.         margin-left: calc(-80px - 1ex);\
  83.         display: inline-block;\
  84.         text-align: right"></div>');
  85.     var img = h2.firstChild.appendChild(document.createElement('img'));
  86.     img.style.maxWidth = img.style.maxHeight = '64px';
  87.     img.style.width = img.style.height = 'auto';
  88.     img.src = iconsrc;
  89.  
  90.     GM_setValue(scriptID, iconsrc);
  91.   }
  92.  
  93.   function __wait() {
  94.     var ob = new MutationObserver(function(mutations){
  95.       for (var i=0, ml=mutations.length, m; (i<ml) && (m=mutations[i]); i++) {
  96.         if (m.target.localName == 'h2') {
  97.           __add();
  98.           ob.disconnect();
  99.           return;
  100.         }
  101.       }
  102.     });
  103.     ob.observe(document, {subtree:true, childList:true});
  104.   }
  105. }