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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 2017-07-11 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						*mail.google.com/*
  13. // @exclude						*docs.google.com/*
  14. // @exclude						*www.google.*
  15. // @exclude						*acid3.acidtests.org/*
  16. // @exclude						*.163.com/*
  17. // @version						2.8.1
  18. // @icon						http://lkytal.qiniudn.com/link.png
  19. // @grant						unsafeWindow
  20. // @homepageURL					https://git.oschina.net/coldfire/GM
  21. // ==/UserScript==
  22.  
  23. "use strict";
  24. var clearLink, excludedTags, linkFilter, linkMixInit, linkPack, linkify, observePage, observer, setLink, urlPrefixes, url_regexp, xPath;
  25.  
  26. url_regexp = /((https?:\/\/|www\.)[\x21-\x7e]+[\w\/]|(\w[\w._-]+\.(com|cn|org|net|info|tv|cc|gov|xxx))(\/[\x21-\x7e]*[\w\/])?|ed2k:\/\/[\x21-\x7e]+\|\/|thunder:\/\/[\x21-\x7e]+=)/gi;
  27.  
  28. urlPrefixes = ['http://', 'https://', 'ftp://', 'thunder://', 'ed2k://'];
  29.  
  30. clearLink = function(event) {
  31.   var j, len, link, prefix, ref, url;
  32.   link = (ref = event.originalTarget) != null ? ref : event.target;
  33.   if (!((link != null) && link.localName === "a" && link.className.indexOf("textToLink") !== -1)) {
  34.     return;
  35.   }
  36.   url = link.getAttribute("href");
  37.   for (j = 0, len = urlPrefixes.length; j < len; j++) {
  38.     prefix = urlPrefixes[j];
  39.     if (url.indexOf(prefix) === 0) {
  40.       return;
  41.     }
  42.   }
  43.   return link.setAttribute("href", "http://" + url);
  44. };
  45.  
  46. document.addEventListener("mouseover", clearLink);
  47.  
  48. setLink = function(candidate) {
  49.   var span, text;
  50.   if ((candidate == null) || candidate.parentNode.className.indexOf("textToLink") !== -1 || candidate.nodeName === "#cdata-section") {
  51.     return;
  52.   }
  53.   text = candidate.textContent.replace(url_regexp, '<a href="$1" target="_blank" class="textToLink">$1</a>');
  54.   if (candidate.textContent.length === text.length) {
  55.     return;
  56.   }
  57.   span = document.createElement("span");
  58.   span.innerHTML = text;
  59.   return candidate.parentNode.replaceChild(span, candidate);
  60. };
  61.  
  62. 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(",");
  63.  
  64. xPath = "//text()[not(ancestor::" + (excludedTags.join(') and not(ancestor::')) + ")]";
  65.  
  66. linkPack = function(result, start) {
  67.   var i, j, k, ref, ref1, ref2, ref3, startTime;
  68.   startTime = Date.now();
  69.   while (start + 10000 < result.snapshotLength) {
  70.     for (i = j = ref = start, ref1 = start + 10000; ref <= ref1 ? j <= ref1 : j >= ref1; i = ref <= ref1 ? ++j : --j) {
  71.       setLink(result.snapshotItem(i));
  72.     }
  73.     start += 10000;
  74.     if (Date.now() - startTime > 2500) {
  75.       return;
  76.     }
  77.   }
  78.   for (i = k = ref2 = start, ref3 = result.snapshotLength; ref2 <= ref3 ? k <= ref3 : k >= ref3; i = ref2 <= ref3 ? ++k : --k) {
  79.     setLink(result.snapshotItem(i));
  80.   }
  81. };
  82.  
  83. linkify = function(node) {
  84.   var result;
  85.   result = document.evaluate(xPath, node, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
  86.   return linkPack(result, 0);
  87. };
  88.  
  89. linkFilter = function(node) {
  90.   var j, len, tag;
  91.   for (j = 0, len = excludedTags.length; j < len; j++) {
  92.     tag = excludedTags[j];
  93.     if (tag === node.parentNode.localName.toLowerCase()) {
  94.       return NodeFilter.FILTER_REJECT;
  95.     }
  96.   }
  97.   return NodeFilter.FILTER_ACCEPT;
  98. };
  99.  
  100. observePage = function(root) {
  101.   var tW;
  102.   tW = document.createTreeWalker(root, NodeFilter.SHOW_TEXT, {
  103.     acceptNode: linkFilter
  104.   }, false);
  105.   while (tW.nextNode()) {
  106.     setLink(tW.currentNode);
  107.   }
  108. };
  109.  
  110. observer = new window.MutationObserver(function(mutations) {
  111.   var Node, j, k, len, len1, mutation, ref;
  112.   for (j = 0, len = mutations.length; j < len; j++) {
  113.     mutation = mutations[j];
  114.     if (mutation.type === "childList") {
  115.       ref = mutation.addedNodes;
  116.       for (k = 0, len1 = ref.length; k < len1; k++) {
  117.         Node = ref[k];
  118.         observePage(Node);
  119.       }
  120.     }
  121.   }
  122. });
  123.  
  124. linkMixInit = function() {
  125.   if (window !== window.top || window.document.title === "") {
  126.     return;
  127.   }
  128.   linkify(document.body);
  129.   return observer.observe(document.body, {
  130.     childList: true,
  131.     subtree: true
  132.   });
  133. };
  134.  
  135. setTimeout(linkMixInit, 100);