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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

当前为 2016-01-03 提交的版本，查看 最新版本。

// ==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
// @version       1.1.5
// @include       http://web.archive.org/web/*
// @include       https://web.archive.org/web/*
// @grant         none

// ==/UserScript==

var toolbarNav = document.getElementById("wm-graph-anchor");
var pics = document.images;
var lastFolder = window.location.href.substring(window.location.href.lastIndexOf("/") + 1);
var shouldHaveTrailingSlash = window.location.href.lastIndexOf(".") < window.location.href.lastIndexOf("/") || window.location.href.substring(window.location.href.lastIndexOf("//") + 2) == lastFolder;
var hasTrailingSlash = window.location.href.lastIndexOf("/") == window.location.href.length - 1;

function fixToolbar()
{
	while(toolbarNav.href.indexOf("&amp;") > -1) toolbarNav.href = toolbarNav.href.replace("&amp;","&");
}

//Fix cases of &amp; in the capture graph
if(toolbarNav) fixToolbar();

if(shouldHaveTrailingSlash && !hasTrailingSlash)
{
	if(!document.getElementsByTagName("base")[0])
	{
		var base = document.createElement("base");
		base.href = window.location.href + "/";
		document.head.appendChild(base);
	}
	for(var i = 0; i < pics.length; i++)
	{
		//Skip over stuff related to the Wayback Machine toolbar and data URIs
		if((document.getElementById("wm-ipp") && document.getElementById("wm-ipp").contains(pics[i])) || pics[i].src.indexOf("data:") > -1) continue;
		//It might be an offsite or absolute reference, which means we don't need to do anything
		//Weird hack to make sure the "revised" images will actually display
		pics[i].src = pics[i].src;
	}
}

var observer = new MutationObserver(function(mutations) {
	mutations.forEach(function(mutation) {
		if(mutation.type == "attributes" && mutation.target == toolbarNav) fixToolbar();
	});    
});

var config = { attributes: true, childList: true, characterData: true, subtree: true, attributeFilter: ["href"] };
observer.observe(toolbarNav, config);