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Text To link

把文字链接转换为可点击链接

当前为 2014-05-16 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name			Text To link
  3. // @description		把文字链接转换为可点击链接
  4. // @namespace		Lkytal
  5. // @include			*
  6. // @exclude			*pan.baidu.com/*
  7. // @exclude			*.renren.com/*
  8. // @exclude			*userscripts.org/scripts/review/*
  9. // @version			2.3.9
  10. // @icon			http://lkytal.qiniudn.com/ic.ico
  11. // @grant			unsafeWindow
  12. // ==/UserScript==
  13.  
  14. if (window != window.top || window.document.title == "")
  15. 	return;
  16. var LinkPage, excludedTags, filter, linkify, observer, setLink, url_regexp, xpath;
  17.  
  18. url_regexp = new RegExp("((https?://|www\\.|magnet\\:\\?)[\x21-\x7e]+|(\\w[\\x21-\\x2e\\x30-\\x7e]+\\.(com|cn|org|net|info|tv)))(/[\\x21-\\x7e]*)?", "gi");
  19.  
  20. setLink = function(candidate) {
  21.   var a, lastLastIndex, match, span, text, url;
  22.   if ((candidate == null) || candidate.nodeName === "#cdata-section") {
  23.     return;
  24.   }
  25.   text = candidate.textContent;
  26.   lastLastIndex = 0;
  27.   match = url_regexp.exec(text);
  28.   if (match) {
  29.     span = document.createElement("span");
  30.     while (match) {
  31.       span.appendChild(document.createTextNode(text.substring(lastLastIndex, match.index)));
  32.       url = match[0];
  33.       if (url.indexOf("http") !== 0 && url.indexOf("magnet") !== 0) {
  34.         url = "http://" + url;
  35.       }
  36.       a = document.createElement("a");
  37.       a.setAttribute("href", url);
  38.       a.setAttribute("target", "_blank");
  39.       a.appendChild(document.createTextNode(match[0]));
  40.       span.appendChild(a);
  41.       lastLastIndex = url_regexp.lastIndex;
  42.       match = url_regexp.exec(text);
  43.     }
  44.     span.appendChild(document.createTextNode(text.substring(lastLastIndex)));
  45.     return candidate.parentNode.replaceChild(span, candidate);
  46.   }
  47. };
  48.  
  49. excludedTags = "a,applet,input,button,area,embed,frame,frameset,head,iframe,img,map,meta,noscript,object,option,param,script,select,style,textarea,code".split(",");
  50.  
  51. xpath = "//text()[not(ancestor::" + excludedTags.join(') and not(ancestor::') + ")]";
  52.  
  53. filter = new RegExp("^(textarea|input|button|select|option|meta|link|noscript|a|html|head|object|embed|script|style|frameset|frame|iframe|img|code)$", "i");
  54.  
  55. linkify = function(doc) {
  56.   var i, result, _i, _ref;
  57.   result = document.evaluate(xpath, doc, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
  58.   for (i = _i = 0, _ref = result.snapshotLength; 0 <= _ref ? _i <= _ref : _i >= _ref; i = 0 <= _ref ? ++_i : --_i) {
  59.     setLink(result.snapshotItem(i));
  60.   }
  61. };
  62.  
  63. LinkPage = function(root) {
  64.   var tW;
  65.   tW = document.createTreeWalker(root, NodeFilter.SHOW_TEXT, {
  66.     acceptNode: function(a) {
  67.       if (!filter.test(a.parentNode.localName)) {
  68.         return NodeFilter.FILTER_ACCEPT;
  69.       }
  70.     }
  71.   }, false);
  72.   while (tW.nextNode()) {
  73.     setLink(tW.currentNode);
  74.   }
  75. };
  76.  
  77. window._bodyHeight = document.body.clientHeight;
  78.  
  79. observer = new window.MutationObserver(function(mutations) {
  80.   if (document.body.clientHeight < window._bodyHeight) {
  81.     return;
  82.   }
  83.   window._bodyHeight = document.body.clientHeight;
  84.   return mutations.forEach(function(mutation) {
  85.     var Node, _i, _len, _ref;
  86.     _ref = mutation.addedNodes;
  87.     for (_i = 0, _len = _ref.length; _i < _len; _i++) {
  88.       Node = _ref[_i];
  89.       LinkPage(Node);
  90.     }
  91.   });
  92. });
  93.  
  94. observer.observe(document.body, {
  95.   childList: true,
  96.   subtree: true
  97. });
  98.  
  99. setTimeout((function() {
  100.   return linkify(document.body);
  101. }), 200);

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