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Pixiv Direct Links

Turns thumbnail titles into direct or mode=manga links, adds direct image links on mode=manga pages, replaces the medium thumbnail on mode=medium pages with the full size, and disables lazy-loading images.

当前为 2015-03-26 提交的版本，查看 最新版本。

// ==UserScript==
// @name           Pixiv Direct Links
// @namespace      https://gf.qytechs.cn/scripts/4555
// @description    Turns thumbnail titles into direct or mode=manga links, adds direct image links on mode=manga pages, replaces the medium thumbnail on mode=medium pages with the full size, and disables lazy-loading images.
// @include        http://www.pixiv.net*
// @grant          GM_xmlhttpRequest
// @version        2015.03.25
// ==/UserScript==

//Turn thumbnail titles into direct links (single images) or mode=manga links.  May or may not work for a given thumbnail if GM_xmlhttpRequest is not available, depending on which layout Pixiv feels like using...
var directTitles = ( typeof(GM_xmlhttpRequest) != "undefined" );

//Append direct links below images on mode=manga pages
var directManga = true;

//Replace the medium thumbnail on mode=medium pages with (and link it to) the full size.
var fullSizeMedium = true;

//Disable lazy loading images.  These appear on mode=manga pages, rankings, and the "Recommended" section of the bookmarks page.
var dontSayLazy = true;

//----------------------------------------------------------------//

var fullSizeWidth = "740px";

if( typeof(custom) != "undefined" )
	custom();

if( location.search.indexOf("mode=manga_big") > 0 || location.search.indexOf("mode=big") > 0 )
{
	//Make the 'big'/'manga_big' image link to itself instead of closing the window
	var image = document.getElementsByTagName("img")[0];
	if( image )
	{
		var link = document.createElement("a");
		link.href = image.src;
		link.appendChild( document.createElement("img") ).src = image.src;
		document.body.innerHTML = "";
		document.body.appendChild( link );
	}
}
else if( location.search.indexOf("mode=manga") > 0 )
{
	var container = document.getElementsByClassName("full-size-container");
	if( directManga && container.length )
	{
		//Check the mode=manga_big page for the first page to determine if the "_big_p" size exists.
		var req = new XMLHttpRequest();
		req.open( "GET", location.href.replace(/page=\d+&?/,'').replace('mode=manga','mode=manga_big&page=0'), true );
		req.onload = function()
		{
			var firstImage = req.responseXML.querySelector("img[src*='_p0.']").src;
			
			for( var i = 0; i < container.length; i++ )
			{
				//Add direct link below each page
				var link = document.createElement("a");
				link.textContent = "direct link";
				link.style.display = "block";
				link.href = firstImage.replace( "_p0.", "_p"+i+"." );
				container[i].parentNode.appendChild( link );
			}
		}
		req.responseType = "document";
		req.send(null);
	}
}
else if( window == window.top )//not inside iframe
{
	if( directTitles )
	{
		//Link dem titles.
		linkThumbTitles([document]);
		new MutationObserver( function(mutationSet)
		{
			mutationSet.forEach( function(mutation){ linkThumbTitles( mutation.addedNodes ); } );
		}).observe( document.body, { childList:true, subtree:true } );
	}
	
	var worksDisplay = document.getElementsByClassName("works_display")[0];
	if( worksDisplay )
	{
		var mainImage, mainLink = worksDisplay.querySelector("a[href*='mode=']");
		if( mainLink )
			mainLink.removeAttribute('target');//Make link open in same window
		
		var oClass = document.getElementsByClassName("original-image");
		if( oClass.length == 1 )//47235071
		{
			var worksDiv = worksDisplay.getElementsByTagName("div")[0];
			worksDisplay.removeChild( worksDiv );//Need to remove instead of hide to prevent double source search links in other script
			var link = worksDisplay.insertBefore( document.createElement("a"), worksDisplay.firstChild );
			mainImage = link.appendChild( fullSizeMedium ? document.createElement("img") : worksDiv.getElementsByTagName("img")[0] );
			fullsizeSrc = link.href = oClass[0].getAttribute("data-src");
		}
		else if( mainLink && mainLink.href.indexOf("mode=big") > 0 && (mainImage = mainLink.getElementsByTagName("img")[0]) != null )//17099702
		{
			if( mainImage.src.indexOf("_m.") > 0 )
				mainLink.href = fullsizeSrc = mainImage.src.replace("_m.",".");			
			else if( typeof(GM_xmlhttpRequest) != "undefined" )
				queryAPI( [{ "id": mainLink.href.match(/illust_id=(\d+)/)[1], "link": mainLink, "fullsize": ( fullSizeMedium ? mainImage : null ) }] );
			else
			{
				//New thumbnails are always jpg, need to query mode=big page to get the right file extension.
				var req = new XMLHttpRequest();
				req.open( "GET", mainLink.href, true );
				req.onload = function()
				{
					mainLink.href = req.responseXML.getElementsByTagName("img")[0].src;
					if( fullSizeMedium )
						mainImage.src = mainLink.href;
				}
				req.responseType = "document";
				req.send(null);
			}
		}
		
		if( mainImage && fullSizeMedium )
		{
			if( fullsizeSrc )
				mainImage.src = fullsizeSrc;
			mainImage.setAttribute("style", "max-width: "+fullSizeWidth+"; height: auto; width: auto;");
			worksDisplay.style.width = fullSizeWidth;
		}
	}
}

if( dontSayLazy && unlazyImage() && window == window.top )
{
	//Initial page has lazy images; listen for more images added later
	new MutationObserver( function(mutationSet)
	{
		mutationSet.forEach( function(mutation)
		{
			for( var i = 0; i < mutation.addedNodes; i++ )
				unlazyImage( mutation.addedNodes[i] );
		} );
	}).observe( document.body, { childList:true, subtree:true } );
}

//----------------------------------------------------------------//

function unlazyImage(target)
{
	var images = ( target || document ).querySelectorAll("img[data-src]");
	for( var i = 0; i < images.length; i++ )
		images[i].src = images[i].getAttribute("data-src");
	return images.length;
}

function pushTitleLink(list, link)
{
	var matcher;
	if( link && link.href && (matcher = link.href.match(/illust_id=(\d+)/)) && matcher[1] > 0 )
		list.push({ "id": matcher[1], "link": link });
}

function linkThumbTitles(targets)
{
	var titleList = [];
	
	for( var i = 0; i < targets.length; i++ )
	{
		//search.php, bookmark.php, member_illust.php, new_illust.php, member.php (uploads), mypage.php (new works)
		var foundTitle = targets[i].querySelectorAll("a[href*='mode=medium'][href*='illust_id='] > .title");
		for( var j = 0; j < foundTitle.length; j++ )
			pushTitleLink( titleList, foundTitle[j].parentNode );
		
		//ranking.php
		foundTitle = targets[i].querySelectorAll(".ranking-item a.title[href*='mode=medium'][href*='illust_id=']");
		for( var j = 0; j < foundTitle.length; j++ )
			pushTitleLink( titleList, foundTitle[j] );
		
		//member_illust.php (what image was responding to)
		foundTitle = targets[i].querySelector(".worksImageresponseInfo a.response-out-work[href*='mode=medium'][href*='illust_id=']");
		if( foundTitle )
			pushTitleLink( titleList, foundTitle );
		
		//response.php, member_illust.php (before/after thumbnails), ?member.php (bookmarks)?
		var image = targets[i].querySelectorAll("li a[href*='mode=medium'][href*='illust_id='] img");
		for( var j = 0; j < image.length; j++ )
		{
			var page, title;
			for( page = image[j].parentNode; page.tagName != "A"; page = page.parentNode );
			
			//The prev/next thumbnails on mode=medium pages have text before/after the image.  Text also follows the image on image responses listings.
			if( !(title = page.getElementsByClassName("title")[0]) && (title = page.lastChild).nodeName != '#text' && (title = page.firstChild).nodeName != '#text' )
				continue;//Can't find title element
			
			//Start title link at mode=medium and change later.
			var titleLink = document.createElement("a");
			titleLink.href = page.href;
			titleLink.style.color = "#333333";//Style used on some pages
			
			//Move the title out of the thumbnail link
			page.removeChild(title);
			titleLink.appendChild(title);
			page.parentNode.insertBefore( titleLink, page.nextSibling );
			
			if( typeof(GM_xmlhttpRequest) != "undefined" || image[j].src.indexOf("img-master") < 0 )
				pushTitleLink( titleList, titleLink );
		}
	}
	
	if( titleList.length )
	{
		if( typeof(GM_xmlhttpRequest) != "undefined" )
			queryAPI( titleList );
		else for( var i = 0; i < titleList.length; i++ )
			directLinkSingle( titleList[i] );
	}
}

function queryAPI(titleList)
{
	var query = "http://spapi.pixiv.net/iphone/illust.php?illust_id="+titleList[0].id;
	for( var i = 1; i < titleList.length; i++ )
		query += ","+titleList[i].id;
	
	//Session ID is needed for R-18 images
	var sessionID = document.cookie.match(/PHPSESSID=[^;]+/)[0];
	if( sessionID )
		query += "&"+sessionID;
	
	GM_xmlhttpRequest(
	{
		method: "GET",
		url: query,
		onload: function(responseDetails)
		{
			var result = [], quote = false;
			
			//Strip quotes and commas inside of quotes, for easier parsing later
			for( var i = 0; i < responseDetails.responseText.length; i++ )
			{
				if( responseDetails.responseText[i] == '"' )
					quote = !quote;
				else if( !quote || responseDetails.responseText[i] != ',' )
					result.push( responseDetails.responseText[i] );
			}
			result = result.join("").split("\n");
			
			for( var i = 0; i < result.length && result[i].length; i++ )
			{
				var matcher, parr = result[i].split(",");
				for( var j = 0; j < titleList.length; j++ )
					if( parr[0] == titleList[j].id )
					{
						//[ 0]: illust_id
						//[ 2]: extension
						//[ 9]: thumbnail (always jpg)
						//[19]: # pages (empty if not manga)
						if( /^\d+$/.test(parr[19]) )
						{
							titleList[j].link.href = titleList[j].link.href.replace("mode=medium","mode=manga");
							( titleList[j].link.firstChild.nodeName == '#text' ? titleList[j].link : titleList[j].link.firstChild ).title += " ("+parr[19]+"p)";
						}
						else if( (matcher = parr[9].match( /(.*\/img\d+\/img\/[^\/]+\/)mobile\/[^?]+(.*)/ )) != null )
						{
							//http://i2.pixiv.net/img04/img/aenobas/mobile/30095810_480mw.jpg?1348946035
							// --> http://i2.pixiv.net/img04/img/aenobas/30095810.jpg?1348946035
							titleList[j].link.href = matcher[1]+parr[0]+"."+parr[2]+matcher[2];//baseURL + illustID + "." + extension + revision
							if( titleList[j].fullsize )
								titleList[j].fullsize.src = titleList[j].link.href;
						}
						else if( (matcher = parr[9].match( /(.*\/)c\/480x960\/img-master([^_]+)_480mw.jpg/ )) != null )
						{
							//http://i1.pixiv.net/c/480x960/img-master/img/2014/09/24/23/49/09/46169016_480mw.jpg
							// --> http://i1.pixiv.net/img-original/img/2014/09/24/23/49/09/46169016_p0.jpg
							titleList[j].link.href = matcher[1]+"img-original"+matcher[2]+"_p0."+parr[2];
							if( titleList[j].fullsize )
								titleList[j].fullsize.src = titleList[j].link.href;
						}
						
						//Remove title from list
						titleList.splice( j, 1 );
						break;
					}
			}
			
			//Individually query whatever didn't get matched above
			for( var i = 0; i < titleList.length; i++ )
				directLinkSingle( titleList[i] );
		}
	});
}

//Fallback method to query each image's mode=medium page.
function directLinkSingle(title)
{
	var req = new XMLHttpRequest();
	req.open( "GET", "http://www.pixiv.net/member_illust.php?mode=medium&illust_id="+title.id, true );
	req.onload = function()
	{
		var select = req.responseXML.getElementsByClassName("original-image");
		if( select.length == 1 )
			title.link.href = select[0].getAttribute("data-src");
		else if( (select = req.responseXML.querySelector(".works_display a[href*='mode=big'] img[src*='_m.']")) != null )
			title.link.href = select.src.replace("_m.",".");
		else if( (select = req.responseXML.querySelector(".works_display a[href*='mode=manga']")) != null )
			title.link.href = select.href;
	}
	req.responseType = "document";
	req.send(null);
}

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