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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 2017-05-16 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						2.8.0
  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, 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. clearLink = function(event) {
  29.   var link, ref, url;
  30.   link = (ref = event.originalTarget) != null ? ref : event.target;
  31.   if (!((link != null) && link.localName === "a" && link.className.indexOf("texttolink") !== -1)) {
  32.     return;
  33.   }
  34.   url = link.getAttribute("href");
  35.   if (url.indexOf("http") !== 0 && url.indexOf("ed2k://") !== 0 && url.indexOf("thunder://") !== 0) {
  36.     return link.setAttribute("href", "http://" + url);
  37.   }
  38. };
  39.  
  40. document.addEventListener("mouseover", clearLink);
  41.  
  42. setLink = function(candidate) {
  43.   var span, text;
  44.   if ((candidate == null) || candidate.parentNode.className.indexOf("texttolink") !== -1 || candidate.nodeName === "#cdata-section") {
  45.     return;
  46.   }
  47.   text = candidate.textContent.replace(url_regexp, '<a href="$1" target="_blank" class="texttolink">$1</a>');
  48.   if (candidate.textContent.length === text.length) {
  49.     return;
  50.   }
  51.   span = document.createElement("span");
  52.   span.innerHTML = text;
  53.   return candidate.parentNode.replaceChild(span, candidate);
  54. };
  55.  
  56. 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(",");
  57.  
  58. xpath = "//text()[not(ancestor::" + (excludedTags.join(') and not(ancestor::')) + ")]";
  59.  
  60. linkPack = function(result, start) {
  61.   var i, j, k, ref, ref1, ref2, ref3, startTime;
  62.   startTime = Date.now();
  63.   while (start + 10000 < result.snapshotLength) {
  64.     for (i = j = ref = start, ref1 = start + 10000; ref <= ref1 ? j <= ref1 : j >= ref1; i = ref <= ref1 ? ++j : --j) {
  65.       setLink(result.snapshotItem(i));
  66.     }
  67.     start += 10000;
  68.     if (Date.now() - startTime > 2500) {
  69.       return;
  70.     }
  71.   }
  72.   for (i = k = ref2 = start, ref3 = result.snapshotLength; ref2 <= ref3 ? k <= ref3 : k >= ref3; i = ref2 <= ref3 ? ++k : --k) {
  73.     setLink(result.snapshotItem(i));
  74.   }
  75. };
  76.  
  77. linkify = function(node) {
  78.   var result;
  79.   result = document.evaluate(xpath, node, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
  80.   return linkPack(result, 0);
  81. };
  82.  
  83. linkFilter = function(node) {
  84.   var j, len, tag;
  85.   for (j = 0, len = excludedTags.length; j < len; j++) {
  86.     tag = excludedTags[j];
  87.     if (tag === node.parentNode.localName.toLowerCase()) {
  88.       return NodeFilter.FILTER_REJECT;
  89.     }
  90.   }
  91.   return NodeFilter.FILTER_ACCEPT;
  92. };
  93.  
  94. observePage = function(root) {
  95.   var tW;
  96.   tW = document.createTreeWalker(root, NodeFilter.SHOW_TEXT, {
  97.     acceptNode: linkFilter
  98.   }, false);
  99.   while (tW.nextNode()) {
  100.     setLink(tW.currentNode);
  101.   }
  102. };
  103.  
  104. observer = new window.MutationObserver(function(mutations) {
  105.   var Node, j, k, len, len1, mutation, ref;
  106.   for (j = 0, len = mutations.length; j < len; j++) {
  107.     mutation = mutations[j];
  108.     if (mutation.type === "childList") {
  109.       ref = mutation.addedNodes;
  110.       for (k = 0, len1 = ref.length; k < len1; k++) {
  111.         Node = ref[k];
  112.         observePage(Node);
  113.       }
  114.     }
  115.   }
  116. });
  117.  
  118. linkMixInit = function() {
  119.   if (window !== window.top || window.document.title === "") {
  120.     return;
  121.   }
  122.   linkify(document.body);
  123.   return observer.observe(document.body, {
  124.     childList: true,
  125.     subtree: true
  126.   });
  127. };
  128.  
  129. setTimeout(linkMixInit, 100);