Wayback Machine Small Bug Fixes

Fixes encoded ampersands on Wayback Machine's captures graph and problems that arise when trailing slashes are missing in an URL and other small issues universally present in all crawled sites

Tính đến 07-06-2016. Xem phiên bản mới nhất.

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You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(Tôi đã có Trình quản lý tập lệnh người dùng, hãy cài đặt nó!)

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You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name          Wayback Machine Small Bug Fixes
// @namespace     DoomTay
// @description   Fixes encoded ampersands on Wayback Machine's captures graph and problems that arise when trailing slashes are missing in an URL and other small issues universally present in all crawled sites
// @version       1.3.0
// @include       http://web.archive.org/web/*
// @include       http://wayback.archive.org/web/*
// @include       https://web.archive.org/web/*
// @include       https://wayback.archive.org/web/*
// @run-at        document-start
// @exclude       /\*/
// @grant         none

// ==/UserScript==

var lastFolder = window.location.href.substring(window.location.href.lastIndexOf("/") + 1);
var pics = document.images;
var backgrounds = document.querySelectorAll("[background]");
var shouldHaveTrailingSlash = (window.location.href.lastIndexOf(".") < window.location.href.lastIndexOf("/") || window.location.href.substring(window.location.href.lastIndexOf("//") + 2) == lastFolder) && !lastFolder.includes("?");
var hasTrailingSlash = window.location.href.endsWith("/");
var domain = window.location.href.substring(0,window.location.href.indexOf("/",window.location.href.lastIndexOf("//") + 2));
var isInDomain = window.location.href == domain || window.location.href == domain + "/";
var timestamp = /web\/(\d{1,14})/.exec(window.location.href)[1];
var checkedNodes = [];

if(!document.getElementsByTagName("base")[0])
{
	var base = document.createElement("base");
	if(shouldHaveTrailingSlash && !hasTrailingSlash) base.href = window.location.href + "/";
	else if((!hasTrailingSlash && !shouldHaveTrailingSlash) || hasTrailingSlash) base.href = document.baseURI;
	else base.href = domain + "/";
	document.head.appendChild(base);
}

function relativeToAbsolute(bgURL)
{
	var img = new Image();
	img.src = bgURL;
	return img.src;
}

function fixURL(URL)
{
	if(URL.includes(document.domain)) return domain + URL.substring(URL.indexOf("/",URL.lastIndexOf("//") + 2));
	else return domain.substring(0,domain.indexOf("/http") + 1) + URL.substring(URL.indexOf("/http") + 1);
}

function fixImage(pic)
{
	var oldSrc = pic.getAttribute("src");
	if(!oldSrc) return;
	if(oldSrc.includes("archive.org")) oldSrc = oldSrc.substring(oldSrc.indexOf(document.domain) + document.domain.length);
	if(oldSrc.startsWith("/")&& !oldSrc.startsWith("/web/")) pic.setAttribute("src",domain + oldSrc);
	else if (oldSrc.startsWith("../") && isInDomain) pic.setAttribute("src",oldSrc.substring(3));
	else pic.setAttribute("src",domain.substring(0,domain.indexOf("/http") + 1) + pic.src.substring(pic.src.indexOf("/http") + 1));
}

function changeBackground(node, newBackground)
{
	if(node.background) node.background = newBackground;
	else if(node.getAttribute("background")) node.setAttribute("background",newBackground);
}

var observer = new MutationObserver(function(mutations) {
	mutations.forEach(function(mutation) {	
		if(mutation.target.nodeName != "HEAD" && mutation.target.nodeName != "BODY") checkMutations(mutation.target);
		if(checkedNodes.includes(mutation.target)) checkedNodes.splice(checkedNodes.indexOf(mutation.target),1);
		for(var i = 0; i < mutation.addedNodes.length; i++) 
		{
			if(mutation.addedNodes[i].nodeName == "BASE")
			{
				if(base) document.head.removeChild(base);
				Array.prototype.forEach.call(pics, function(pic) {
					pic.src = pic.src;
				});
				Array.prototype.forEach.call(backgrounds, function(background) {
					background.setAttribute("background",background.getAttribute("background"));
				});
			}
			else if(mutation.addedNodes[i].nodeName == "SCRIPT" && mutation.addedNodes[i].innerHTML.includes("__wm.bt()"))
			{
				var toolbarScript = Array.prototype.find.call(mutation.addedNodes[i].parentNode.childNodes,node => node.innerHTML && node.innerHTML.includes("wbCurrentUrl") && node.innerHTML.includes("&amp;"));
				if(toolbarScript)
				{
					var replacement = document.createElement("script");
					replacement.type = toolbarScript.type;
					var currentURL = toolbarScript.innerHTML.match(/wbCurrentUrl = "(.+)";/)[1];
					replacement.innerHTML = toolbarScript.innerHTML.replace(currentURL,decodeHTML(currentURL));
					replacement.innerHTML = replacement.innerHTML.replace("bt:bootstrap}","bt:bootstrap,ff:\"balls\"}");
					toolbarScript.parentNode.replaceChild(replacement,toolbarScript);
				}
			}
			else checkMutations(mutation.addedNodes[i]);
		}
	});
});

function decodeHTML(text) {
    var textarea = document.createElement("textarea");
    textarea.innerHTML = text;
    return textarea.value;
}

function checkMutations(node)
{
	if(document.getElementById("wm-ipp") && document.getElementById("wm-ipp").contains(node)) return;
	if(node.nodeType == 1)
	{
		if(node.nodeName == "IMG" && !node.src.includes("/web/") && !node.src.includes("data:"))
		{
			observer.disconnect();
			fixImage(node);
			observer.observe(document.body || document, config);
		}
		var bg = node.background || node.getAttribute("background");
		if(bg && !relativeToAbsolute(bg).includes(document.domain + "/web"))
		{
			observer.disconnect();
			changeBackground(node,fixURL(relativeToAbsolute(bg)));
			observer.observe(document.body || document, config);
		}
		if(node.nodeName == "A" && node.href.includes("/http://web.archive.org/web/")) node.href = node.href.substring(node.href.indexOf("/http://web.archive.org/web/") + 1);
	}
	checkedNodes.push(node);
	for(var n = 0; n < node.childNodes.length; n++)
	{
		if(!checkedNodes.includes(node.childNodes[n])) checkMutations(node.childNodes[n]);
	}
}

var config = { attributes: true, childList: true, subtree: true };
observer.observe(document.body || document, config);