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Linkify commit comments (perl5.git.perl.org)

turn bug references into clickable links

  1. // ==UserScript==
  2. // @name          Linkify commit comments (perl5.git.perl.org)
  3. // @namespace     [mauke]/perl5.git.perl.org
  4. // @description   turn bug references into clickable links
  5. // @match         http://perl5.git.perl.org/perl.git/commit/*
  6. // @match         https://perl5.git.perl.org/perl.git/commit/*
  7. // @match         http://perl5.git.perl.org/perl.git/commitdiff/*
  8. // @match         https://perl5.git.perl.org/perl.git/commitdiff/*
  9. // @grant         none
  10. // @version       1.0.0
  11. // ==/UserScript==
  12.  
  13. 'use strict';
  14.  
  15. function xpath(expr, doc) {
  16.     doc = doc || document;
  17.     return doc.evaluate(expr, doc, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
  18. }
  19.  
  20. let ts = xpath('//*[name()="div" and (@class="page_body" or @class="header")]//text()');
  21.  
  22. for (let i = 0; i < ts.snapshotLength; ++i) {
  23.     let t = ts.snapshotItem(i);
  24.     let text = t.nodeValue;
  25.     let prev = 0;
  26.     let frag = document.createDocumentFragment();
  27.     let re = /(?:#|(?:bug|perl)\s+(?:#|(?=\d{2})))(\d+)/ig;
  28.     let m;
  29.     while ((m = re.exec(text))) {
  30.         let pre = text.slice(prev, m.index);
  31.         if (pre !== '') {
  32.             frag.appendChild(document.createTextNode(pre));
  33.         }
  34.  
  35.         let a = document.createElement('a');
  36.         a.href = 'http://rt.perl.org/rt3/Public/Bug/Display.html?id=' + m[1];
  37.         a.appendChild(document.createTextNode(m[0]));
  38.         frag.appendChild(a);
  39.  
  40.         prev = re.lastIndex;
  41.     }
  42.     if (!frag.hasChildNodes()) {
  43.         continue;
  44.     }
  45.     let fin = text.slice(prev);
  46.     if (fin !== '') {
  47.         frag.appendChild(document.createTextNode(fin));
  48.     }
  49.  
  50.     let p = t.parentNode;
  51.     //p.insertBefore(frag, t.nextSibling);
  52.     //p.removeChild(t);
  53.     p.replaceChild(frag, t);
  54. }