Turn plain text URLs into clickable links, 把文字链接转换为可点击链接
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// ==UserScript==
// @name Text To link
// @description Turn plain text URLs into clickable links, 把文字链接转换为可点击链接
// @author lkytal
// @namespace Lkytal
// @homepage http://lkytal.github.io/
// @include *
// @exclude *pan.baidu.com/*
// @exclude *renren.com/*
// @exclude *exhentai.org/*
// @eexclude *music.google.com/*
// @eexclude *mail.google.com/*
// @eexclude *docs.google.com/*
// @eexclude *www.google.com/*
// @exclude *acid3.acidtests.org/*
// @version 2.6.7
// @icon http://lkytal.qiniudn.com/ic.ico
// @grant unsafeWindow
// @homepageURL https://git.oschina.net/coldfire/GM
// ==/UserScript==
"use strict";
var clearLink, excludedTags, filter, linkMixInit, linkPack, linkify, observePage, observer, setLink, url_regexp, xpath;
url_regexp = /((https?:\/\/|www\.)[\x21-\x7e]+[\w\/]|(\w[\w._-]+\.(com|cn|org|net|info|tv|cc))(\/[\x21-\x7e]*[\w\/])?|ed2k:\/\/[\x21-\x7e]+\|\/|thunder:\/\/[\x21-\x7e]+=)/gi;
clearLink = function(event) {
var link, url;
link = event.originalTarget;
if (!((link != null) && link.localName === "a" && link.className.indexOf("texttolink") !== -1)) {
return;
}
url = link.getAttribute("href");
if (url.indexOf("http") !== 0 && url.indexOf("ed2k://") !== 0 && url.indexOf("thunder://") !== 0) {
return link.setAttribute("href", "http://" + url);
}
};
document.addEventListener("mouseover", clearLink);
setLink = function(candidate) {
var span, text;
if ((candidate == null) || candidate.parentNode.className.indexOf("texttolink") !== -1 || candidate.nodeName === "#cdata-section") {
return;
}
text = candidate.textContent.replace(url_regexp, '<a href="$1" target="_blank" class="texttolink">$1</a>');
if (candidate.textContent.length === text.length) {
return;
}
span = document.createElement("span");
span.innerHTML = text;
return candidate.parentNode.replaceChild(span, candidate);
};
excludedTags = "a,svg,canvas,applet,input,button,area,pre,embed,frame,frameset,head,iframe,img,option,map,meta,noscript,object,script,style,textarea,code".split(",");
xpath = "//text()[not(ancestor::" + (excludedTags.join(') and not(ancestor::')) + ")]";
filter = new RegExp("^(" + (excludedTags.join('|')) + ")$", "i");
linkPack = function(result, start) {
var i, j, k, ref, ref1, ref2, ref3;
if (start + 10000 < result.snapshotLength) {
for (i = j = ref = start, ref1 = start + 10000; ref <= ref1 ? j <= ref1 : j >= ref1; i = ref <= ref1 ? ++j : --j) {
setLink(result.snapshotItem(i));
}
setTimeout(function() {
return linkPack(result, start + 10000);
}, 15);
} else {
for (i = k = ref2 = start, ref3 = result.snapshotLength; ref2 <= ref3 ? k <= ref3 : k >= ref3; i = ref2 <= ref3 ? ++k : --k) {
setLink(result.snapshotItem(i));
}
}
};
linkify = function(doc) {
var result;
result = document.evaluate(xpath, doc, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
return linkPack(result, 0);
};
observePage = 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);
}
};
observer = new window.MutationObserver(function(mutations) {
var Node, j, k, len, len1, mutation, ref;
for (j = 0, len = mutations.length; j < len; j++) {
mutation = mutations[j];
if (mutation.type === "childList") {
ref = mutation.addedNodes;
for (k = 0, len1 = ref.length; k < len1; k++) {
Node = ref[k];
observePage(Node);
}
}
}
});
linkMixInit = function() {
if (window !== window.top || window.document.title === "") {
return;
}
linkify(document.body);
return observer.observe(document.body, {
childList: true,
subtree: true
});
};
setTimeout(linkMixInit, 100);