把文字链接转换为可点击链接
// ==UserScript==
// @name Text To link
// @description 把文字链接转换为可点击链接
// @author lkytal
// @namespace Lkytal
// @include *
// @exclude *pan.baidu.com/*
// @exclude *.renren.com/*
// @exclude *userscripts.org/scripts/review/*
// @version 2.4.1
// @icon http://lkytal.qiniudn.com/ic.ico
// @grant unsafeWindow
// @homepageURL https://greasyfork.org/scripts/342-text-to-link/
// ==/UserScript==
"use strict";
if (window != window.top || window.document.title == "")
return;
var LinkPage, excludedTags, filter, linkify, observer, setLink, url_regexp, xpath;
url_regexp = new RegExp("((https?://|www\\.|magnet\\:\\?)[\\x21-\\x7e]+|(\\w[\\x21-\\x2e\\x30-\\x7e]+\\.(com|cn|org|net|info|tv)))(/[\\x21-\\x7e]*[0-9a-zA-Z])?", "gi");
setLink = function(candidate) {
var a, lastLastIndex, match, span, text, url;
if ((candidate == null) || candidate.nodeName === "#cdata-section") {
return;
}
text = candidate.textContent;
lastLastIndex = 0;
match = url_regexp.exec(text);
if (match) {
span = document.createElement("span");
while (match) {
span.appendChild(document.createTextNode(text.substring(lastLastIndex, match.index)));
url = match[0];
if (url.indexOf("http") !== 0 && url.indexOf("magnet") !== 0) {
url = "http://" + url;
}
a = document.createElement("a");
a.setAttribute("href", url);
a.setAttribute("target", "_blank");
a.appendChild(document.createTextNode(match[0]));
span.appendChild(a);
lastLastIndex = url_regexp.lastIndex;
match = url_regexp.exec(text);
}
span.appendChild(document.createTextNode(text.substring(lastLastIndex)));
return candidate.parentNode.replaceChild(span, candidate);
}
};
excludedTags = "a,applet,input,button,area,embed,frame,frameset,head,iframe,img,map,meta,noscript,object,option,param,script,select,style,textarea,code".split(",");
xpath = "//text()[not(ancestor::" + excludedTags.join(') and not(ancestor::') + ")]";
filter = new RegExp("^(textarea|input|button|select|option|meta|link|noscript|a|html|head|object|embed|script|style|frameset|frame|iframe|img|code)$", "i");
linkify = function(doc) {
var i, result, _i, _ref;
result = document.evaluate(xpath, doc, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
for (i = _i = 0, _ref = result.snapshotLength; 0 <= _ref ? _i <= _ref : _i >= _ref; i = 0 <= _ref ? ++_i : --_i) {
setLink(result.snapshotItem(i));
}
};
LinkPage = function(root) {
var tW;
tW = document.createTreeWalker(root, NodeFilter.SHOW_TEXT, {
acceptNode: function(a) {
if (!filter.test(a.parentNode.localName)) {
return NodeFilter.FILTER_ACCEPT;
}
}
}, false);
while (tW.nextNode()) {
setLink(tW.currentNode);
}
};
window._bodyHeight = document.body.clientHeight;
observer = new window.MutationObserver(function(mutations) {
if (document.body.clientHeight < window._bodyHeight) {
return;
}
window._bodyHeight = document.body.clientHeight;
return mutations.forEach(function(mutation) {
var Node, _i, _len, _ref;
_ref = mutation.addedNodes;
for (_i = 0, _len = _ref.length; _i < _len; _i++) {
Node = _ref[_i];
LinkPage(Node);
}
});
});
observer.observe(document.body, {
childList: true,
subtree: true
});
setTimeout((function() {
return linkify(document.body);
}), 200);