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Text To link

Turn plain text URLs into clickable links, 把文字链接转换为可点击链接

当前为 2017-09-29 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name						Text To link
  3. // @description					Turn plain text URLs into clickable links, 把文字链接转换为可点击链接
  4. // @author						lkytal
  5. // @namespace					Lkytal
  6. // @homepage					https://lkytal.github.io/
  7. // @include						*
  8. // @exclude						*pan.baidu.com/*
  9. // @exclude						*renren.com/*
  10. // @exclude						*exhentai.org/*
  11. // @exclude						*music.google.com/*
  12. // @exclude						*play.google.com/music/*
  13. // @exclude						*mail.google.com/*
  14. // @exclude						*docs.google.com/*
  15. // @exclude						*www.google.*
  16. // @exclude						*acid3.acidtests.org/*
  17. // @exclude						*.163.com/*
  18. // @exclude						*.alipay.com/*
  19. // @version						2.8.4
  20. // @icon						http://lkytal.qiniudn.com/link.png
  21. // @grant						unsafeWindow
  22. // @homepageURL					https://git.oschina.net/coldfire/GM
  23. // ==/UserScript==
  24.  
  25. "use strict";
  26. ;
  27. var clearLink, excludedTags, linkFilter, linkMixInit, linkPack, linkify, observePage, observer, setLink, urlPrefixes, url_regexp, xPath;
  28.  
  29. url_regexp = /((https?:\/\/|www\.)[\x21-\x7e]+[\w\/]|(\w[\w._-]+\.(com|cn|org|net|info|tv|cc|gov|edu))(\/[\x21-\x7e]*[\w\/])?|ed2k:\/\/[\x21-\x7e]+\|\/|thunder:\/\/[\x21-\x7e]+=)/gi;
  30.  
  31. urlPrefixes = ['http://', 'https://', 'ftp://', 'thunder://', 'ed2k://'];
  32.  
  33. clearLink = function (event) {
  34.   var j, len, link, prefix, ref, url;
  35.   link = (ref = event.originalTarget) != null ? ref : event.target;
  36.   if (!(link != null && link.localName === "a" && link.className.indexOf("textToLink") !== -1)) {
  37.     return;
  38.   }
  39.   url = link.getAttribute("href");
  40.   //console.log url
  41.   for (j = 0, len = urlPrefixes.length; j < len; j++) {
  42.     prefix = urlPrefixes[j];
  43.     if (url.indexOf(prefix) === 0) {
  44.       return;
  45.     }
  46.   }
  47.   return link.setAttribute("href", "http://" + url);
  48. };
  49.  
  50. document.addEventListener("mouseover", clearLink);
  51.  
  52. setLink = function (candidate) {
  53.   var span, text;
  54.   if (candidate == null || candidate.parentNode.className.indexOf("textToLink") !== -1 || candidate.nodeName === "#cdata-section") {
  55.     return;
  56.   }
  57.   text = candidate.textContent.replace(url_regexp, '<a href="$1" target="_blank" class="textToLink">$1</a>');
  58.   if (candidate.textContent.length === text.length) {
  59.     return;
  60.   }
  61.   span = document.createElement("span");
  62.   span.innerHTML = text;
  63.   return candidate.parentNode.replaceChild(span, candidate);
  64. };
  65.  
  66. excludedTags = "a,svg,canvas,applet,input,button,area,pre,embed,frame,frameset,head,iframe,img,option,map,meta,noscript,object,script,style,textarea,code".split(",");
  67.  
  68. xPath = '//text()[not(ancestor::' + excludedTags.join(') and not(ancestor::') + ')]';
  69.  
  70. linkPack = function (result, start) {
  71.   var i, j, k, ref, ref1, ref2, ref3, startTime;
  72.   startTime = Date.now();
  73.   while (start + 10000 < result.snapshotLength) {
  74.     for (i = j = ref = start, ref1 = start + 10000; ref <= ref1 ? j <= ref1 : j >= ref1; i = ref <= ref1 ? ++j : --j) {
  75.       setLink(result.snapshotItem(i));
  76.     }
  77.     start += 10000;
  78.     if (Date.now() - startTime > 2500) {
  79.       return;
  80.     }
  81.   }
  82.   for (i = k = ref2 = start, ref3 = result.snapshotLength; ref2 <= ref3 ? k <= ref3 : k >= ref3; i = ref2 <= ref3 ? ++k : --k) {
  83.     setLink(result.snapshotItem(i));
  84.   }
  85. };
  86.  
  87. linkify = function (node) {
  88.   var result;
  89.   result = document.evaluate(xPath, node, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
  90.   return linkPack(result, 0);
  91. };
  92.  
  93. linkFilter = function (node) {
  94.   var j, len, tag;
  95.   for (j = 0, len = excludedTags.length; j < len; j++) {
  96.     tag = excludedTags[j];
  97.     if (tag === node.parentNode.localName.toLowerCase()) {
  98.       return NodeFilter.FILTER_REJECT;
  99.     }
  100.   }
  101.   return NodeFilter.FILTER_ACCEPT;
  102. };
  103.  
  104. observePage = function (root) {
  105.   var tW;
  106.   tW = document.createTreeWalker(root, NodeFilter.SHOW_TEXT, { //+ NodeFilter.SHOW_ELEMENT,
  107.     acceptNode: linkFilter
  108.   }, false);
  109.   while (tW.nextNode()) {
  110.     setLink(tW.currentNode);
  111.   }
  112. };
  113.  
  114. observer = new window.MutationObserver(function (mutations) {
  115.   var Node, j, k, len, len1, mutation, ref;
  116.   for (j = 0, len = mutations.length; j < len; j++) {
  117.     mutation = mutations[j];
  118.     if (mutation.type === "childList") {
  119.       ref = mutation.addedNodes;
  120.       for (k = 0, len1 = ref.length; k < len1; k++) {
  121.         Node = ref[k];
  122.         observePage(Node);
  123.       }
  124.     }
  125.   }
  126. });
  127.  
  128. linkMixInit = function () {
  129.   if (window !== window.top || window.document.title === "") {
  130.     return;
  131.   }
  132.   //console.time('a')
  133.   linkify(document.body);
  134.   //console.timeEnd('a')
  135.   return observer.observe(document.body, {
  136.     childList: true,
  137.     subtree: true
  138.   });
  139. };
  140.  
  141. setTimeout(linkMixInit, 100);