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Creates a new page showing just the images from any Tumblr
当前为
// ==UserScript==
// @name Eza's Tumblr Scrape
// @namespace https://inkbunny.net/ezalias
// @description Creates a new page showing just the images from any Tumblr
// @license MIT
// @license Public domain / No rights reserved
// @include http://*?ezastumblrscrape*
// @include https://*?ezastumblrscrape*
// @include http://*/ezastumblrscrape*
// @include http://*.tumblr.com/
// @include https://*.tumblr.com/
// @include http://*.tumblr.com/page/*
// @include https://*.tumblr.com/page/*
// @include http://*.tumblr.com/tagged/*
// @include https://*.tumblr.com/tagged/*
// @include http://*.tumblr.com/archive
// @include http://*.co.vu/*
// @exclude *imageshack.us*
// @exclude *imageshack.com*
// @grant GM_registerMenuCommand
// @version 5.5
// ==/UserScript==
// Create an imaginary page on the relevant Tumblr domain, mostly to avoid the ridiculous same-origin policy for public HTML pages. Populate page with all images from that Tumblr. Add links to this page on normal pages within the blog.
// This script also works on off-site Tumblrs, by the way - just add /archive?ezastumblrscrape?scrapewholesite after the ".com" or whatever. Sorry it's not more concise.
// Make it work, make it fast, make it pretty - in that order.
// TODO:
// I'll have to add filtering as some kind of text input... and could potentially do multi-tag filtering, if I can reliably identify posts and/or reliably match tag definitions to images and image sets.
// This is a good feature for doing /scrapewholesite to get text links and then paging through them with fancy dynamic presentation nonsense. Also: duplicate elision.
// I'd love to do some multi-scrape stuff, e.g. scraping both /tagged/homestuck and /tagged/art, but that requires some communication between divs to avoid constant repetition.
// post-level detection would also be great because it'd let me filter out reblogs. fuck all these people with 1000-page tumblrs, shitty animated gifs in their theme, infinite scrolling, and NO FUCKING TAGS. looking at you, http://neuroticnick.tumblr.com/post/16618331343/oh-gamzee#dnr - you prick.
// Look into Tumblr Saviour to see how they handle and filter out text posts.
// Add a convenient interface for changing options? "Change browsing options" to unhide a div that lists every ?key=value pair, with text-entry boxes or radio buttons as appropriate, and a button that pushes a new URL into the address bar and re-hides the div. Would need to be separate from thumbnail toggle so long as anything false is suppressed in get_url or whatever.
// Dropdown menus? Thumbnails yes/no, Pages At Once 1-20. These change the options_map settings immediately, so next/prev links will use them. Link to Apply Changes uses same ?startpage as current.
// Could I generalize that the way I've generalized Image Glutton? E.g., grab all links from a Pixiv gallery page, show all images and all manga pages.
// Possibly @include any ?scrapeeverythingdammit to grab all links and embed all pictures found on them. single-jump recursive web mirroring. (fucking same-domain policy!)
// now that I've got key-value mapping, add a link for 'view original posts only (experimental).' er, 'hide reblogs?' difficult to accurately convey.
// make it an element of the post-scraping function. then it would also work on scrape-whole-tumblr.
// better yet: call it separately, then use the post-scraping function on each post-level chunk of HTML. i.e. call scrape_without_reblogs from scrape_whole_tumblr, split off each post into strings, and call soft_scrape_page( single_post_string ) to get all the same images.
// or would it be better to get all images from any post? doing this by-post means we aren't getting theme nonsense (mostly).
// maybe just exclude images where a link to another tumblr happens before the next image... no, text posts could screw that up.
// general post detection is about recognizing patterns. can we automate it heuristically? bear in mind it'd be done at least once per scrape-page, and possibly once per tumblr-page.
// user b84485 seems to be using the scrape-whole-site option to open image links in tabs, and so is annoyed by the 500/1280 duplicates. maybe a 'remove duplicates' button after the whole site's done?
// It's a legitimately good idea. Lord knows I prefer opening images in tabs under most circumstances.
// Basically I want a "Browse Links" page instead of just "grab everything that isn't nailed down."
// http://mekacrap.tumblr.com/post/82151443664/oh-my-looks-like-theres-some-pussy-under#dnr - lots of 'read more' stuff, for when that's implemented.
// eza's tumblr scrape: "read more" might be tumblr standard.
// e.g. <p class="read_more_container"><a href="http://ladylovelycocks.tumblr.com/post/66964089115/stupid-comic-continued-under-readmore-more" class="read_more">Read More</a></p>
// http://c-enpai.tumblr.com/ - interesting content visible in /archive, but every page is 'themed' to be a blank front page. wtf.
// chokes on multi-thousand-page tumblrs like actual-vriska, at least when listing all pages. it's just link-heavy text. maybe skip having a div for every page and just append to one div. or skip divs and append to the raw document innerHTML. it could be a memory thing, if ajax elements are never destroyed.
// multi-thousand-page tumblrs make "find image links from all pages" choke. massive memory use, massive CPU load. ridiculous. it's just text. (alright, it's links and ajax requests, but it's doggedly linear.)
// maybe skip individual divs and append the raw pile-of-links hypertext into one div. or skip divs entirely and append it straight to the document innerHTML.
// could it be a memory leak thing? are ajax elements getting properly released and destroyed when their scope ends? kind of ridiculous either way, considering we're holding just a few kilobytes of text per page.
// try re-using the same ajax object.
/* Assorted notes from another text file
. eza's tumblr fixiv? de-style everything by simply erasing the <style> block.
. eza's tumblr scrape - test finishing whole page for displaying updates. (maybe only on ?scrapewholesite.) probably not too smart, but an interesting benchmark. only ever one document.body.innerHTML=thing;.
. eza's tumblr scrape: definitely do everything-at-once page write for thumbnail/browse mode. return one list of urls per page, so e.g. ten separate lists. remove duplicates between all lists. then build the page and do a single html write. prior to that, write 'fetching pages...' or something. it should be pretty quick. it's not like it's terribly responsive when loading pages anwyay. scrolling doesn't work right.
. thinking e.g. http://whatdoesitlumpingmean.tumblr.com/archive?startpage=1?pagesatonce=10?find=/tagged/my-art?ezastumblrscrape?thumbnails which has big blue dots on every post.
. see also http://herblesbians.tumblr.com/ with its gigantic tall banners
. alternate solution: check natural resolution, don't downscale tiny / narrow images.
. eza's tumblr scrape: why doesn't the thumbnail page pick up mspadventures.com gifs? e.g. http://kitkaloid.tumblr.com/page/26, with tavros's face being 'dusted.'
*/
// Soft_scrape_page should return non-image links from imgur, deviantart, etc., then collect them at the bottom of the div in thumbnail mode.
// links to embedded videos? linkdump at top, just below the /page link. looks like https://www.tumblr.com/video_file/119027046245/tumblr_nlt061qtgG1u32sbu/480 - e.g. manyakis.tumblr.
// Tumblr has a standard mobile version. Fuck me, how long has that been there? example.tumblr.com/mobile, no CSS, bare image links. Shit on the fuck.
// Hey hey! This might allow trivial recognition of individual posts and reblogs vs. OC. Via, but no source... weak. Good enough for us, though.
// Every post is between a <p> and </p>, but can contain <p></p> blocks inside. Messy.
// Reblogs say "(via <a href='http//example.tumblr.com/123456'>example</a>)" and original posts don't.
// Dates are noted in <h2> blocks, but they're outside any <p> blocks, so who cares.
// Images are linked (all in _500, grr, but we can obviously deal with that) but posts aren't. Shame. That would've been useful.
// Shit, consider the basics... do tags works? Pagination is just /mobile/page/2, etc. with tags: example.tumblr.com/tagged/homestuck/page/2/mobile.
// Are photosets handled correctly? What about read-more links? Uuugh, photosets just appear as "[video]". Literally that text. No link. Fuck! So close, aaand useless.
// I can use /mobile instead of /archive, but there's no point. It breaks favicons and I still have to fetch the fat-ass normal pages.
// I can probably use mobile pages to match normal pages, since they... wait, are they guaranteed to have the same post count? yes. alice grove has one post per page.
// So to find original posts, I have to fetch both normal and mobile pages, and... shit, and consistently separate posts on normal pages. It has to be identical.
// I can also use mobile for page count, since it's guaranteed to have forward / backward links. Ha! We can start testing at 100!
// Adding /mobile even works on individual posts. You can get a via link from any stupid theme. Yay.
// Add "show via/source links" or just "visit mobile page" as a Greasemonkey action / script command?
// Tumblr's own back/forward links are broken in the mobile theme. Goes to: /mobile/tagged/example. Should go to: /tagged/example/mobile. Modify those pages.
// http://thegirlofthebeach.tumblr.com/archive - it's all still there, but the theme shows nothing but a 'fuck you, bye' message.
// Pages still provide an og:image link. Unfortunately, that's a single image, even for photosets. Time to do some reasoning about photoset URLs and their constituent image URLs.
// Oh yeah - mobile. That gives us a page count, at least, but then photosets don't provide even that first image.
// Add a tag ?usemobile for using /mobile when scraping or browsing images.
// To do when /archive works and provides photosets in addition to /mobile images: http://fotophest.tumblr.com
// Archive does allow seeking by year/month, e.g. http://fotophest.tumblr.com/archive/2012/4
// example.tumblr.com/page/1/mobile always points to example.tumblr.com. Have to do example.tumblr.com/mobile. Ugh.
// Archival note: since Tumblr images basically never disappear, it SHOULD suffice to save the full scrape of a blog into a text file. I don't need to temporarily mass-download the whole image set, as I've been doing.
// Add "tagged example" to title for ?find=/tagged/example, to make this easier.
// Make a browser for these text files. Use the image-browser interface to display ten pages at once (by opening the file via a prompt, since file:// would kvetch about same-origin policy.) Maintain page links.
// Filter duplicates globally, in this mode. No reason not to.
// Use ?lastpage or ?end to indicate last detected page. (Indicate that it's approximate.) I keep checking ?scrapewholesite because I forget if I'm blowing through twenty pages or two hundred.
// Given multiple ?key=value definitions on the same URL, the last one takes precedence. I can just tack on whatever multiple options I please. (The URL-generating function remains useful for cleanliness.)
// Some Tumblrs (e.g. http://arinezez.tumblr.com/) have music players in frames. I mean, wow. Tumblr is dedicated to recreating every single design mistake Geocities allowed.
// This wouldn't be a big deal, except it means the address-bar URL doesn't change when you change pages. That's a hassle.
// Images with e.g. _r1_1280 are revisions? See http://actual-vriska.tumblr.com/post/32788651941/ vs. its source http://cancerousaquarium.tumblr.com/post/32784513645/ - an obvious watermark has been added.
// Tested with a few random _r1 images from a large scrape's textfile. Some return XML errors ('no associated stylesheet') and others 404. Mildly interesting at best.
// Aha - now that we have an 'end page,' there can be a drop down for page selection. Maybe also for pages-at-once? Pages 1-10, 11-20, 21-30, etc. Pages at once: 1, 5, 10, 20/25?
// Possibly separate /post/ links, since they'll obviously be posts from that page. (Ehh, maybe not - I think e.g. Promstuck links to a "masterpost" in the sidebar.)
// Maybe hide links behind a button instead of ignoring them entirely? That way compactness is largely irrelevant.
// Stick 'em behind a button? Maybe ID and Class each link, so we can GetElementsByClassName and this.innerText = this.href.
// If multi-split works, just include T1 / O1 links in-order with everything else. It beats scrolling up and guessing, even vs page themes that suck.
// No multi-split. I'd have to split on one term, then foreach that array and split for another term, then combine all resulting arrays in-order.
// Aha: there IS multi-splitting, using regexes as the delimiter. E.g. "Hello awesome, world!".split(/[\s,]+/); for splitting on spaces and commas.
// Split e.g. src=|src="|src=', then split space/singlequote/doublequote and take first element? We don't care what the first terminator is; just terminate.
// How do YouTube videos count? E.g. http://durma.tumblr.com/post/57768318100/ponponpon%E6%AD%8C%E3%81%A3%E3%81%A6%E3%81%BF%E3%81%9F-verdirk-by-etna102
// Another example of off-site video: http://pizza-omelette.tumblr.com/post/44128050736/2hr-watch-this-its-very-important-i-still
// Some themes have EVERY post "under the cut," e.g. http://durma.tumblr.com/. Photosets show up. Replies to posts don't. ?usemobile should get some different stuff.
// Brute-force method: ajax every single /post/ link. Thus - post separation, read-more, possibly other benefits. Obvious downside is massive latency increase.
// Test on e.g. akitsunsfw.tumblr.com with its many read-more links.
// Probably able to identify new posts vs. reblogs, too. Worth pursuing. At the very least, I could consistently exclude posts whose mobile versions include via/source.
// <!-- GOOGLE CAROUSEL --><script type="application/ld+json">{"@type":"ItemList","url":"http:\/\/crystalpei.com\/page\/252","itemListElement":[{"@type":"ListItem","position":1,"url":"http:\/\/crystalpei.com\/post\/30638270842\/actually-this-is-a-self-portrait"}],"@context":"http:\/\/schema.org"}</script>
// <link rel="canonical" href="http://crystalpei.com/page/252" />
// Does this matter? Seems useful, listing /post/ URLs for this page.
// 10,000-page tumblrs are failing with ?showlinks enabled. the text gets doubled-up. is there a height limit for firefox rendering a page? does it just overflow? try a dummy function that does no ajax and just prints many links.
// There IS a height limit! I printed 100 lines of dummy text for 10,000 pages, and at 'page' 8773, the 27th line is halfway offscreen. I cannot scroll past that.
// Saving as text does save all 10,000 pages. So the text is there... Firefox just won't render it.
// Reducing text size (ctrl-minus) resulted in -less- text being visible. Now it ends at 8729.
// http://shegnyanny.tumblr.com/ redirects to https://www.tumblr.com/dashboard/blog/shegnyanny - from every page. But it's all still there! Fuck, that's aggravating!
// DaveJaders needs that dashboard scrape treatment.
// I need a 'repeatedly click 'show more notes' function' and maybe that should be part of this script.
// 1000+ page examples: http://neuroticnick.tumblr.com/ - http://teufeldiabolos.co.vu/ - http://actual-vriska.tumblr.com/ - http://cullenfuckers.tumblr.com/ - http://soupery.tumblr.com - some with 10,000 pages or more.
// JS 2015 has "Fetch" as standard? Say it's true, even if it's not!
// The secret to getting anything done in-order seems to be creating a function (which you can apparently do anywhere, in any scope) and then calling that_function.then.
// So e.g. function{ do_stuff( fetch(a).etc ) }, followed by do_stuff().then{ use results from stuff }.
// Promise.all( iterable ), ahhhh.
// Promise.map isn't real (or isn't standard?) but is just Promise.all( array.map( n => f(n) ). Works inside "then" too.
// setTimeout( 0 ) is a meaningful concept because it pushes things onto the event queue instead of the stack, so they'll run in-order when the stack is clear.
// Functions can be passed as arguments. Just send the name, and url_array=parse( body, look_for_videos ) allows parse(body,func) to do func( body ) and find videos.
// Test whether updating all these divs is what keeps blocking and hammering the CPU. Could be thrashing? It's plainly not main RAM. Might be VRAM. Test acceleration.
// Doing rudimentary benchmarking, the actual downloading of pages is stupid fast. Hundreds per minute. All the hold-up is in the processing.
// Ooh yeah, updating divs hammers and blocks even when it's just 'pagenum - body.length.'
// Does body.length happen all at once? JS in FF seems aggressively single-threaded.
// Like, 'while( array.shift )' obviously matches a for loop with a shift in it, but the 'while' totally locks up the browser.
// Maybe it's the split()? I could do that manually with a for loop... again. Test tall div updating with no concern for response content.
// Speaking of benchmarks, forEach is faster than map. How in the hell? It's like a 25% speed gain for what should be a more linear process.
// ... not that swapping map and forEach makes a damn bit of difference with the single-digit milliseconds involved here.
// Since it gets worse as the page goes on, is it a getElementById thing?
// Editing the DOM doesn't update an actual HTML file in memory (AFAIK), but you're scanning past 1000-odd elements instead of, like, 2.
// Audio files? Similar to grabbing videos. - http://joeckuroda.tumblr.com/post/125455996815 -
// Add a ?chrono option that works better than Tumblr's. Reverse url_array, count pages backwards, etc.
// Maybe just ?reverse for per-page reversal of url_array. Lazy option.
// http://crotah.tumblr.com desperately needs an original-posts filter.
// I can't return a promise to "then." soft_scrape returns promise.all(etc).then(etc). You can soft_scrape(url).then, but not .then( s=>soft_scrape(s) ).then. Because fuck you.
// I'm frothing with rage over this. This is a snap your keyboard in half, grab the machine by the throat, and scream 'this should work' problem.
// I know you can return a promise in a 'then' because that's the fucking point of 'then.' It's what fetch's response.text() does. It's what fetch does!
// Multi-tag scraping requires post-level detection, or at least, post enumeration instead of image enumeration.
// Grab all /post/ links in /tagged/foo, then all /post/ links in /tagged/bar, then remove duplicates.
// Sort by /post/12345 number? Or give preference to which page they appear on? The latter could get weird.
// CrunchCaptain has no /post/ links. All posts are linked with tmblr.co shortened URLs. Tumblr, you never cease to disappoint me.
// This is compartmentalized enough that I could add an alternate scrape approach without touching any of this guff.
// Blindsprings is a comic with every single page behind the cut. It needs this alternate scrape.
// Possibly get rid of ?thumbnails mode, except the CSS toggle. Hmm. No, changing the default would be harder. It'd reset between pages.
// What do I want, exactly? What does innovation look like here?
// Not waiting for page scrapes. Scrapewholesite, then store that, and compose output as needed.
// Change window.location to match current settings, so they're persistent in the event of a reload. Fall back to on-demand page scraping if that happens.
// Maybe a 100-page limit instead of 1000, at least for this ?newscrape or ?reduxmode business.
// Centered UI, for clarity. Next and Previous links side-aligned, however clumsily. Touch-friendly because why not.
// Dropdowns for options_map. Expose more choices.
// Post-level splitting? Tags? Maybe Google Carousel support backed up by hacky fakery.
// I want to be able to grab a post URL while I'm looking at the image in browse mode.
// On-hover links for each image? Text directly below images? CSS nightmares, but presumably tractable.
// What I -really- want - what this damn script was half-invented for - is eliminating reblogs. Filtering down to only original posts. (Or at least posts with added content.)
// Remember that mobile mode needs special consideration. (Which could just be 'for each img' if mobile's all it handles.)
// Maybe skip the height-vs-width thumbnail question by having user options a la Pixiv Fixiv. Just slap more options into the CSS and change the body's class.
// GM menu commands for view-mobile, view-embed, and google-alternate-source?
// I'm overthinking this. Soft scrape: grab each in-domain /post/ link, scrape it, display its contents. The duplicate-finder will handle the crud.
// Can't reliably grab tags from post-by-post scraping because some people link their art/cosplay tags in their theme. Bluh.
// http://iloveyournudity.tumblr.com/archive?ezastumblrscrape?scrapewholesite?find=/?grabrange=1001?lastpage=2592 stops at page 1594. rare, these days.
// Could put the "Post" text over images, if CSS allows some flag for 'zero width.' Images will always(ish) be wider than the word "Post."
// Nailed it, more or less, thanks to https://www.designlabthemes.com/text-over-image-with-css/
// Wrapping on images vs. permalink, and the ability to select images sensibly, are highly dependent on the number and placement of spaces in that text block.
// Permalink in bar across bottom of image, or in padded rectangle at bottom corner? I'm leaning toward bar.
// ... I just realized this breaks 'open in new tabs.' You can't select a bunch of images and open them because you open the posts too.
// Oh well. 'Open in new tabs' isn't browser-standard, and downthemall selection works fine.
// InkBunny user Logitech says the button is kind of crap. It is. I think I said I'd fix it later a year ago.
// Holy shit, Tumblr finally updated /mobile to link to posts. Does it include [video] posts?! ... no. Fuck you, Tumblr.
// Y'know, if page_dupe_hash tracked how many times each /tagged/ URL was seen, it'd make tag tracking more or less free.
// If I used the empty-page fetch to prime page_dupe_hash with negative numbers, I could count up to 0 and notice when a tag is legitimately part of a post.
// Separate tags early, then blacklist them as before.
// Should page_number( x ) be a function? Return example.tumblr.com/guff/page/x, but also handle /mobile and so on.
// Pages without any posts don't get any page breaks. That's almost a feature instead of a bug, but it does stem from an empty variable somewhere.
// Debating making the 'experimental' post-by-post mode the main mode. It's objectively better in most ways... but should be better in all ways before becoming the standard.
// For example: new_embedded_display doesn't handle non-1280 images. (They still exist, annoyingly.)
// I'm loathe to ever switch more than once. But do I want two pairs of '10 at once' / '1 at once' links? Which ones get bolded? AABB or ABAB?
// Maybe put the new links on the other side of the page. Alignment: right.
// 'Browse pages' vs. 'Browse posts?' The fact it's -images- needs to prominent. 'Image viewer (pages)' vs. 'Image viewer (posts)?' '100 posts at once?' (Guesstimated.)
// Maybe 'many posts at once' vs. 'few posts at once.' Ehhh.
// The post browser could theoretically grab from /archive, but I'd need to know how to paginate in /archive.
// The post browser could add right-aligned 'source' links in the permalink bar... and once we're detecting that, even badly, we can filter down to original posts!
// Mobile mode is semi-helpful, offering a standard for post separation and "via" / "source" links. But: still missing photosets. Arg.
// ... and naively you'd miss cases where this tumblr has replied and added artwork. Hmm.
// Not sure if ?usemobile works with ?everypost. I think it use to, a couple days ago.
// In "snap rows" mode, max-width:100% doesn't respect aspect ratio. Wide images get squished.
// They're already in containers, so it's something like .container .fixed-height etc. Fix it next version.
// Added first-page special case to /mobile handling, and there's some code duplication going on. Double-check what's going on for both scrapers.
// Should offsite images read (Waiting for offsite image)? I'd like to know at a glance whether a Tumblr image failed or some shit from Minus didn't load.
// "Programming is like this amazing puzzle game, where the puzzles are created by your own stupidity."
// Maybe just... like... ?exclude=/tagged/onepiece... to do a full rip of /tagged/onepiece and load that into page_dupe_hash? Or ?include maybe? Logical and & or?
// Or some kind of text-file combiner, not because that's convenient to anyone else, but because I've been saving a shitload of text-files.
// Changes since last version:
// Made 'site' a global variable to avoid redefining it. (Hard to pass it.) Refactored to make the name clearer: site_and_tags.
// Created buggy new scrape-and-display function to try post-by-post fetching without jumping through my own hoops
// Shuffled a bunch of linear list-handling guff out from the universal soft scrape functon so the new scrape-and-display function can use it too (mmm-mm, spaghetti)
// Added classes and CSS to place post links (now "permalinks") atop every image, displayed on-hover.
// Removed fetch_and_scrape (and associated angry comments) because it didn't fucking work. Promises are still rough around the edges.
// Golfed some of the helper-function spaghetti and the CSS
// Added ?autoclick for testing purposes. Tired of clicking the button manually on ?scrapewholesite.
// Added tag overview to the bottom of ?scrapewholesite
// HTML-to-links splitter now breaks on "related posts" nonsense and ignores everything afterward
// Implemented scaling options in post-by-post scraper, more or less ripping off Pixiv Fixiv
// Separated display_post into its own function (for the new post-based scrape, but it's usable in general)
// Added page breaks back to post-by-post display, but hid them behind a toggle
// Scrape button... addressed, if not fixed. Z-index is higher and the code's a little less ugly. It's still not great.
// Made extra rounds of find-last-page algorithm conditional, speeding up small-ish tumblrs and getting more precise about big ones
// Minor changes to language about "experimental" post-by-post browser
// Changes worth reporting on Greasemonkey summary:
// Added new post-by-post image grabber, with on-hover permalinks from each image to the post it came from
// New fetch-every-post image browser has instant image-scaling options
// Tag statistics added to bottom of whole-site scrape mode
// "Scrape" button on real Tumblr pages now works more reliably
// ------------------------------------ Global variables ------------------------------------ //
var options_map = new Object(); // Associative array for ?key=value pairs in URL.
// Here's the URL options currently used. Scalars are at their default values; boolean flags are all set to false.
//options_map[ "lastpage" ] = 0; // No longer given a default value: if not URL-defined (e.g. ?lastpage=1000) then the script finds it automatically.
options_map[ "startpage" ] = 1; // Page to start at when browsing images.
options_map[ "pagesatonce" ] = 10; // How many Tumblr pages to browse images from at once.
options_map[ "thumbnails" ] = false; // For browsing mode, 240px-wide images vs. full-size.
options_map[ "find" ] = ""; // What goes after the Tumblr URL. E.g. /tagged/art or /chrono.
// Only two hard problems in computer science...
var page_dupe_hash = {}; // Dump each scraped page into this, then test against each page - to remove inter-page duplicates (i.e., same shit on every page)
// Using a global variable for this (defined later) instead of repeatedly defining it or trying to pass within the page using black magic.
var site_and_tags = ""; // To be filled with e.g. http: + // + example.tumblr.com + /tagged/sherlock once options_map.find is parsed from the URL
// Global list of post_id numbers that have been used, corresponding to span IDs based on them
var posts_placed = new Array;
// ------------------------------------ Script start, general setup ------------------------------------ //
// First, determine if we're loading many pages and listing/embedding them, or if we're just adding a convenient button to that functionality.
if( window.location.href.indexOf( 'ezastumblrscrape' ) > -1 ) { // If we're scraping pages:
// Replace Tumblr-standard Archive page with our own custom nonsense
var title = document.title; // Keep original title for after we delete the original <head>
document.head.innerHTML = ""; // Delete CSS. We'll start with a blank page.
document.title = window.location.hostname + " - " + title;
document.body.outerHTML = "<div id='maindiv'><div id='fetchdiv'></div></div><div id='bottom_controls_div'></div>"; // This is our page. Top stuff, content, bottom stuff.
let css_block = "<style> "; // Let's break up the CSS for readability and easier editing, here.
css_block += "body { background-color: #DDD; } "; // Light grey BG to make image boundaries more obvious
css_block += ".fixed-width img{ width: 240px; } ";
css_block += ".fit-width img{ max-width: 100%; } ";
css_block += ".fixed-height img{ height: 240px; max-width:100%; } "; // Max-width for weirdly common 1px-tall photoset footers. Ultrawide images get their own row.
css_block += ".fit-height img{ max-height: 100%; } ";
css_block += ".smart-fit img{ max-width: 100%; max-height: 100%; } "; // Might ditch the individual fit modes. This isn't Pixiv Fixiv. (No reason not to have them?)
css_block += ".pagelink{ display:none; } ";
css_block += ".showpagelinks .pagelink{ display:inline; } ";
// Text blocks over images hacked together after https://www.designlabthemes.com/text-over-image-with-css/ - CSS is the devil
css_block += ".container { position: relative; padding: 0; margin: 0; } "; // Holds an image and the on-hover permalink
css_block += ".postlink { position: absolute; width: 100%; left: 0; bottom: 0; opacity: 0; background: rgba(255,255,255,0.7); } "; // Permalink across bottom
css_block += ".container:hover .postlink { opacity: 1; } ";
css_block += "a.interactive{ color:green; } "; // For links that don't go anywhere, e.g. 'toggle image size' - signalling.
css_block += "</style>";
document.body.innerHTML += css_block; // Has to go in all at once or the browser "helpfully" closes the style tag upon evaluation
var mydiv = document.getElementById( "maindiv" ); // I apologize for the generic names. This script used to be a lot simpler.
// Identify options in URL (in the form of ?key=value pairs)
var key_value_array = window.location.href.split( '?' ); // Knowing how to do it the hard way is less impressive than knowing how not to do it the hard way.
key_value_array.shift(); // The first element will be the site URL. Durrrr.
for( dollarsign of key_value_array ) { // forEach( key_value_array ), including clumsy homage to $_
var this_pair = dollarsign.split( '=' ); // Split key=value into [key,value] (or sometimes just [key])
if( this_pair.length < 2 ) { this_pair.push( true ); } // If there's no value for this key, make its value boolean True
if( this_pair[1] == "false " ) { this_pair[1] = false; } // If the value is the string "false" then make it False - note fun with 1-ordinal "length" and 0-ordinal array[element].
else if( !isNaN( parseInt( this_pair[1] ) ) ) { this_pair[1] = parseInt( this_pair[1] ); } // If the value string looks like a number, make it a number
options_map[ this_pair[0] ] = this_pair[1]; // options_map.key = value
}
if( options_map.find[ options_map.find.length - 1 ] == "/" ) { options_map.find = options_map.find.substring( 0, options_map.find.length - 1 ); }
// kludge - prevents example.tumblr.com//page/2 nonsense. (does this matter anymore?)
if( options_map.thumbnails ) { document.body.className = "fixed-width"; } // CSS approach to thumbnail sizing; className="" to toggle back to auto.
// Oh yeah, we have to do this -after- options_map.find is defined:
site_and_tags = window.location.protocol + "//" + window.location.hostname + options_map.find; // e.g. http: + // + example.tumblr.com + /tagged/sherlock
// Add tags to title, for archival and identification purposes
document.title += options_map.find.split('/').join(' '); // E.g. /tagged/example/chrono -> "tagged example chrono"
// In Chrome, /archive pages monkey-patch and overwrite Promise.all and Promise.resolve.
// Clunky solution to clunky problem: grab the default property from a fresh iframe.
// Big thanks to inu-no-policeman for the iframe-based solution. Prototypes were not helpful.
var iframe = document.createElement( 'iframe' );
document.body.appendChild( iframe );
window['Promise'] = iframe.contentWindow['Promise'];
document.body.removeChild( iframe );
// Go to image browser or link scraper according to URL options.
mydiv.innerHTML = "Not all images are guaranteed to appear.<br>"; // Thanks to JS's wacky accomodating nature, mydiv is global despite appearing in an if-else block.
if( options_map[ "scrapewholesite" ] ) {
scrape_whole_tumblr(); // Images from every page, presented as text links
} else if( options_map[ "everypost" ] ) {
new_embedded_display(); // Images from every post on every page, from ten pages at once
} else {
scrape_tumblr_pages(); // Ten pages of embedded images at a time
}
} else { // If it's just a normal Tumblr page, add a link to the appropriate /ezastumblrscrape URL
// Add link(s) to the standard "+Follow / Dashboard" nonsense. Before +Follow, I think - to avoid messing with users' muscle memory.
// This is currently beyond my ability to dick with JS through a script in a plugin. Let's kludge it for immediate usability.
// kludge by Ivan - http://userscripts-mirror.org/scripts/review/65725.html
var url = window.location.protocol + "//" + window.location.hostname + "/archive?ezastumblrscrape?scrapewholesite?find=" + window.location.pathname;
// Preserve /tagged/tag/chrono, etc. Also preserve http: vs https: via "location.protocol".
if( url.indexOf( "/page/chrono" ) < 0 ) { // Basically checking for posts /tagged/page, thanks to Detective-Pony. Don't even ask.
if( url.lastIndexOf( "/page/" ) > 0 ) { url = url.substring( 0, url.lastIndexOf( "/page/" ) ); } // Don't include e.g. /page/2. We'll add that ourselves.
}
// "Don't clean this up. It's not permanent."
// Fuck it, it works and it's fragile. Just boost its z-index so it stops getting covered.
var scrape_button = document.createElement("a");
scrape_button.setAttribute( "style", "position: absolute; top: 26px; right: 2px; padding: 2px 0 0; width: 50px; height: 18px; display: block; overflow: hidden; -moz-border-radius: 3px; background: #777; color: #fff; font-size: 8pt; text-decoration: none; font-weight: bold; text-align: center; line-height: 12pt; z-index: 100; " );
scrape_button.setAttribute("href", url);
scrape_button.innerHTML = "Scrape";
var body_ref = document.getElementsByTagName("body")[0];
body_ref.appendChild(scrape_button);
// Pages where the button gets split (i.e. clicking top half only redirects tiny corner iframe) are probably loading this script separately in the iframe.
// Which means you'd need to redirect the window instead of just linking. Bluh.
// Greasemonkey supports user commands through its add-on menu! Thus: no more manually typing /archive?ezastumblrscrape?scrapewholesite on uncooperative blogs.
GM_registerMenuCommand( "Scrape whole Tumblr blog", go_to_scrapewholesite );
}
function go_to_scrapewholesite() {
let redirect = window.location.protocol + "//" + window.location.hostname + "/archive?ezastumblrscrape?scrapewholesite?find=" + window.location.pathname;
window.location.href = redirect;
}
// ------------------------------------ Whole-site scraper for use with DownThemAll ------------------------------------ //
// Monolithic scrape-whole-site function, recreating the original intent (before I added pages and made it a glorified multipage image browser)
function scrape_whole_tumblr() {
var highest_known_page = 0;
// Link to image-viewing version, preserving current tags
mydiv.innerHTML += "<h1><a id='browse' href='" + options_url( {scrapewholesite: false, thumbnails:true} ) +"'>Browse images (10 pages at once)</a></h1>";
mydiv.innerHTML += "<a id='browse1' href='" + options_url( {scrapewholesite:false, thumbnails:true, pagesatonce:1} ) + "'>Browse images (1 page at once)</a><br>";
mydiv.innerHTML += "<a id='browse2' href='" + options_url( {scrapewholesite:false, thumbnails:true, pagesatonce:10, everypost:true} ) + "'>(Experimental fetch-every-post image browser)</a><br><br>";
// Find out how many pages we need to scrape.
if( isNaN( options_map.lastpage ) ) {
// Find upper bound in a small number of fetches. Ideally we'd skip this - some themes list e.g. "Page 1 of 24." I think that requires back-end cooperation.
mydiv.innerHTML += "Finding out how many pages are in <b>" + site_and_tags.substring( site_and_tags.indexOf( '/' ) + 2 ) + "</b>:<br><br>";
// Returns page number if there's no Next link, or negative page number if there is a Next link.
// Only for use on /mobile pages; relies on Tumblr's shitty standard theme
function test_next_page( body ) {
var link_index = body.indexOf( 'rel="canonical"' ); // <link rel="canonical" href="http://shadygalaxies.tumblr.com/page/100" />
var page_index = body.indexOf( '/page/', link_index );
var terminator_index = body.indexOf( '"', page_index );
var this_page = parseInt( body.substring( page_index+6, terminator_index ) );
if( body.indexOf( '>next<' ) > 0 ) { return -this_page; } else { return this_page }
}
// Generates an array of length "steps" between given boundaries - or near enough, for sanity's sake
function array_between_bounds( lower_bound, upper_bound, steps ) {
if( lower_bound > upper_bound ) { // Swap if out-of-order.
var temp = lower_bound; lower_bound = upper_bound, upper_bound = temp;
}
var bound_range = upper_bound - lower_bound;
if( steps > bound_range ) { steps = bound_range; } // Steps <= bound_range, but steps > 1 to avoid division by zero:
var pages_per_test = parseInt( bound_range / steps ); // Steps-1 here, so first element is lower_bound & last is upper_bound. Off-by-one errors, whee...
var range = Array( steps )
.fill( lower_bound )
.map( (value,index) => value += index * pages_per_test );
range.push( upper_bound );
return range;
}
// Given a (presumably sorted) list of page numbers, find the last that exists and the first that doesn't exist.
function find_reasonable_bound( test_array ) {
return Promise.all( test_array.map( pagenum => fetch( site_and_tags + '/page/' + pagenum + '/mobile' ) ) )
.then( responses => Promise.all( responses.map( response => response.text() ) ) )
.then( pages => pages.map( page => test_next_page( page ) ) )
.then( numbers => {
var lower_index = -1;
numbers.forEach( (value,index) => { if( value < 0 ) { lower_index++; } } ); // Count the negative numbers (i.e., count the pages with known content)
if( lower_index < 0 ) { lower_index = 0; }
var bounds = [ Math.abs(numbers[lower_index]), numbers[lower_index+1] ]
mydiv.innerHTML += "Last page is between " + bounds[0] + " and " + bounds[1] + ".<br>";
return bounds;
} )
}
// Repeatedly narrow down how many pages we're talking about; find a reasonable "last" page
find_reasonable_bound( [2, 10, 100, 1000, 10000, 100000] ) // Are we talking a couple pages, or a shitload of pages?
.then( pair => find_reasonable_bound( array_between_bounds( pair[0], pair[1], 10 ) ) ) // Narrow it down. Fewer rounds of more fetches works best.
.then( pair => find_reasonable_bound( array_between_bounds( pair[0], pair[1], 10 ) ) ) // Time is round count, fetches add up, selectivity is fetches x fetches.
// Quit fine-tuning numbers and just conditional in some more testing for wide ranges.
.then( pair => { if( pair[1] - pair[0] > 50 ) { return find_reasonable_bound( array_between_bounds( pair[0], pair[1], 10 ) ) } else { return pair; } } )
.then( pair => { if( pair[1] - pair[0] > 50 ) { return find_reasonable_bound( array_between_bounds( pair[0], pair[1], 10 ) ) } else { return pair; } } )
.then( pair => {
options_map.lastpage = pair[1];
start_scraping_button();
} );
}
else { // If we're given the highest page by the URL, just use that
start_scraping_button();
}
// Add "Scrape" button to the page. This will grab images and links from many pages and list them page-by-page.
function start_scraping_button() {
document.getElementById( 'browse' ).href += "?lastpage=" + options_map.lastpage; // Add last-page indicator to Browse Images link
document.getElementById( 'browse1' ).href += "?lastpage=" + options_map.lastpage; // ... and the page-at-once link.
document.getElementById( 'browse2' ).href += "?lastpage=" + options_map.lastpage; // ... and the fetch-every-post link.
if( options_map.grabrange ) { // If we're only grabbing a 1000-page block from a huge-ass tumblr:
mydiv.innerHTML += "<br>This will grab 1000 pages starting at <b>" + options_map.grabrange + "</b>.<br><br>";
} else { // If we really are describing the last page:
mydiv.innerHTML += "<br>Last page is <b>" + options_map.lastpage + "</b> or lower.<br><br>";
}
if( options_map.lastpage > 1500 && !options_map.grabrange ) { // If we need to link to 1000-page blocks, and aren't currently inside one:
for( var x = 1; x < options_map.lastpage; x += 1000 ) { // For every 1000 pages...
var decade_url = window.location.href + "?grabrange=" + x + "?lastpage=" + options_map.lastpage;
mydiv.innerHTML += "<a href='" + decade_url + "'>Pages " + x + "-" + (x+999) + "</a><br>"; // ... link a range of 1000 pages.
}
}
// Add button to scrape every page, one after another.
// Buttons within GreaseMonkey are a huge pain in the ass. I stole this from stackoverflow.com/questions/6480082/ - thanks, Brock Adams.
var button = document.createElement ('div');
button.innerHTML = '<button id="myButton" type="button">Find image links from all pages</button>';
button.setAttribute ( 'id', 'scrape_button' ); // I'm really not sure why this id and the above HTML id aren't the same property.
document.body.appendChild ( button ); // Add button (at the end is fine)
document.getElementById ("myButton").addEventListener ( "click", scrape_all_pages, false ); // Activate button - when clicked, it triggers scrape_all_pages()
if( options_map.autostart ) { document.getElementById ("myButton").click(); } // Getting tired of clicking on every reload - debug-ish
}
}
function scrape_all_pages() { // Example code implies that this function /can/ take a parameter via the event listener, but I'm not sure how.
var button = document.getElementById( "scrape_button" ); // First, remove the button. There's no reason it should be clickable twice.
button.parentNode.removeChild( button ); // The DOM can only remove elements from a higher level. "Elements can't commit suicide, but infanticide is permitted."
mydiv.innerHTML += "Scraping page: <div id='pagecounter'></div><div id='afterpagecounter'></div><br>"; // This makes it easier to view progress,
// Create divs for all pages' content, allowing asynchronous AJAX fetches
var x = 1;
var div_end_page = options_map.lastpage;
if( !isNaN( options_map.grabrange ) ) { // If grabbing 1000 pages from the middle of 10,000, don't create 0..10,000 divs
x = options_map.grabrange;
div_end_page = x + 1000; // Should be +999, but whatever, no harm in tiny overshoot
}
for( ; x <= div_end_page; x++ ) {
var siteurl = site_and_tags + "/page/" + x;
if( options_map.usemobile ) { siteurl += "/mobile"; } // If ?usemobile is flagged, scrape the mobile version.
if( x == 1 && options_map.usemobile ) { siteurl = site_and_tags + "/mobile"; } // Hacky fix for redirect from example.tumblr.com/page/1/anything -> example.tumblr.com
var new_div = document.createElement( 'div' );
new_div.id = '' + x;
document.body.appendChild( new_div );
}
// Fetch all pages with content on them
var page_counter_div = document.getElementById( 'pagecounter' ); // Probably minor, but over thousands of laggy page updates, I'll take any optimization.
pagecounter.innerHTML = "" + 1;
var begin_page = 1;
var end_page = options_map.lastpage;
if( !isNaN( options_map.grabrange ) ) { // If a range is defined, grab only 1000 pages starting there
begin_page = options_map.grabrange;
end_page = options_map.grabrange + 999; // NOT plus 1000. Stop making that mistake. First page + 999 = 1000 total.
if( end_page > options_map.lastpage ) { end_page = options_map.lastpage; } // Kludge
document.title += " " + (parseInt( begin_page / 1000 ) + 1); // Change page title to indicate which block of pages we're saving
}
// Generate array of URL/pagenum pair-arrays
url_index_array = new Array;
for( var x = begin_page; x <= end_page; x++ ) {
var siteurl = site_and_tags + "/page/" + x;
if( options_map.usemobile ) { siteurl += "/mobile"; } // If ?usemobile is flagged, scrape the mobile version. No theme shenanigans... but also no photosets. Sigh.
if( x == 1 && options_map.usemobile ) { siteurl = site_and_tags + "/mobile"; } // Hacky fix for redirect from example.tumblr.com/page/1/anything -> example.tumblr.com
url_index_array.push( [siteurl, x] );
}
// Fetch, scrape, and display all URLs. Uses promises to work in parallel and promise.all to limit speed and memory (mostly for reliability's sake).
// Consider privileging first page with single-element fetch, to increase apparent responsiveness. Doherty threshold for frustration is 400ms.
var simultaneous_fetches = 25;
var chain = Promise.resolve(0); // Empty promise so we can use "then"
var order_array = [1]; // We want to show the first page immediately, and this is a callback rat's-nest, so let's make an array of how many pages to take each round
for( var x = 1; x < url_index_array.length; x += simultaneous_fetches ) { // E.g. [1, simultaneous_fetchs, s_f, s_f, s_f, whatever's left]
if( url_index_array.length - x > simultaneous_fetches ) { order_array.push( simultaneous_fetches ); } else { order_array.push( url_index_array.length - x ); }
}
order_array.forEach( (how_many) => {
chain = chain.then( s => {
var subarray = url_index_array.splice( 0, how_many ); // Shift a reasonable number of elements into separate array, for partial array.map
return Promise.all( subarray.map( page =>
Promise.all( [ fetch( page[0] ).then( s => s.text() ), page[1], page[0] ] ) // Return [ body of page, page number, page URL ]
) )
} )
.then( responses => responses.map( s => { // Scrape URLs for links and images, display on page
var pagenum = s[1];
var page_url = s[2];
var url_array = soft_scrape_page_promise( s[0] ) // Surprise, this is a promise now
.then( urls => {
// Sort #link URLs to appear first, because we don't do that in soft-scrape anymore
urls.sort( (a,b) => -a.indexOf( "#link" ) ); // Strings containing "#link" go before others - return +1 if not found in 'a.' Should be stable.
// Print URLs so DownThemAll (or similar) can grab them
var bulk_string = "<br><a href='" + page_url + "'>" + page_url + "</a><br>"; // A digest, so we can update innerHTML just once per div
// DEBUG-ish - on theory that 1000-page-tall scraping/rendering fucks my VRAM
if( options_map.smalltext ) { bulk_string = "<p style='font-size:1px'>" + bulk_string; } // If ?smalltext flag is set, render text unusably small, for esoteric reasons
urls.forEach( (value,index,array) => {
if( options_map.plaintext ) {
bulk_string += value + '<br>';
} else {
bulk_string += '<a href ="' + value + '">' + value + '</a><br>';
}
} )
document.getElementById( '' + pagenum ).innerHTML = bulk_string;
if( parseInt( pagecounter.innerHTML ) < pagenum ) { pagecounter.innerHTML = "" + pagenum; } // Increment pagecounter (where sensible)
} );
} )
)
} )
chain = chain.then( s => {
document.getElementById( 'afterpagecounter' ).innerHTML = "Done. Use DownThemAll (or a similar plugin) to grab all these links.";
// DEBUG: divulge contents of page_dupe_hash to check for common tags
// Ugh, I'm going to have to turn this from an associative array into an array-of-arrays if I want to sort it.
let tag_overview = "<br>" + "Tag overview: " + "<br>";
let score_tag_list = new Array; // This will hold an array of arrays so we can sort this associative array by its values. Wheee.
for( let url in page_dupe_hash ) {
if( url.indexOf( '/tagged/' ) > 0 && page_dupe_hash[ url ] > 1 ) { // If it's a tag URL and NON-unique...
score_tag_list.push( [ page_dupe_hash[ url ], url ] ); // ... store [ number of times seen, tag URL ] for sorting.
}
}
score_tag_list.sort( (a,b) => a[0] < b[0] ); // Descending order - most common tags first
score_tag_list.map( pair => {
tag_overview += "<br>" + pair[0] + '\t' + "<a href='" + pair[1] + "'>" + pair[1] + "</a>";
} )
document.body.innerHTML += tag_overview;
} )
}
// ------------------------------------ Multi-page scraper with embedded images ------------------------------------ //
function scrape_tumblr_pages() {
// Grab an empty page so that duplicate-removal hides whatever junk is on every single page
// This is DEBUG-ish. It might be slow, barring caching. It might not work due to asynchrony. It could block actual content thanks to 'my best posts' sidebars.
exclude_content_example( site_and_tags + '/page/100000' );
if( isNaN( parseInt( options_map.startpage ) ) || options_map.startpage <= 1 ) { options_map.startpage = 1; } // Sanity check
var next_link = options_url( "startpage", options_map.startpage + options_map.pagesatonce );
var prev_link = options_url( "startpage", options_map.startpage - options_map.pagesatonce );
var prev_next_controls = "<br>";
if( options_map.startpage > 1 ) { prev_next_controls += "<a href='" + prev_link + "'><<< Previous</a> - "; }
prev_next_controls += "<a href='" + next_link + "'>Next >>></a><br><br>";
mydiv.innerHTML += prev_next_controls;
document.getElementById("bottom_controls_div").innerHTML += prev_next_controls;
// Link to the thumbnail page or full-size-image page as appropriate
if( options_map.thumbnails ) { mydiv.innerHTML += "<a href='"+ options_url( {thumbnails: false} ) + "'>Switch to full-size images</a>"; }
else { mydiv.innerHTML += "<a href='"+ options_url( {thumbnails: true} ) + "'>Switch to thumbnails</a>"; }
// Toggle thumbnails via CSS (eventually, alter options_map accordingly)
mydiv.innerHTML += " - <a class='interactive' href='javascript: void(0);' onclick=\"(function(o){ \
if( document.body.className == '' ) { \
document.body.className = 'fixed-width'; } \
else { \
document.body.className = ''; \
} })(this)\">Toggle image size</a>";
if( options_map.pagesatonce == 1 ) { mydiv.innerHTML += " - <a href='"+ options_url( {pagesatonce:10} ) + "'>Show ten pages at once</a>"; }
else { mydiv.innerHTML += " - <a href='"+ options_url( {pagesatonce:1} ) + "'>Show one page at once</a>"; }
mydiv.innerHTML += " - <a href='"+ options_url( {scrapewholesite:true} ) + "'>Scrape whole Tumblr</a>";
mydiv.innerHTML += " - <a href='"+ options_url( {everypost:true} ) + "'>(Experimental fetch-every-post image browser)</a><br>";
// Fill an array with the page URLs to be scraped (and create per-page divs while we're at it)
var pages = new Array( parseInt( options_map.pagesatonce ) )
.fill( parseInt( options_map.startpage ) )
.map( (value,index) => value+index );
pages.forEach( pagenum => {
mydiv.innerHTML += "<hr><div id='" + pagenum + "'><b>Page " + pagenum + " </b></div>";
} )
pages.map( pagenum => {
var siteurl = site_and_tags + "/page/" + pagenum; // example.tumblr.com/page/startpage, startpage+1, startpage+2, etc.
if( options_map.usemobile ) { siteurl += "/mobile"; } // If ?usemobile is flagged, scrape mobile version. No theme shenanigans... but also no photosets. Sigh.
if( pagenum == 1 && options_map.usemobile ) { siteurl = site_and_tags + "/mobile"; } // Hacky fix for redirect from example.tumblr.com/page/1/anything -> example.tumblr.com
fetch( siteurl ).then( response => response.text() ).then( text => {
document.getElementById( pagenum ).innerHTML += "<b>fetched</b><br>" // Immediately indicate the fetch happened.
+ "<a href='" + siteurl + "'>" + siteurl + "</a><br>"; // Link to page. Useful for viewing things in-situ... and debugging.
// For some asinine reason, 'return url_array' causes 'Permission denied to access property "then".' So fake it with ugly nesting.
soft_scrape_page_promise( text )
.then( url_array => {
var div_digest = ""; // Instead of updating each div's HTML for every image, we'll lump it into one string and update the page once per div.
var video_array = new Array;
var outlink_array = new Array;
var inlink_array = new Array;
url_array.forEach( (value,index,array) => { // Shift videos and links to separate arrays, blank out those URLs in url_array
if( value.indexOf( '#video' ) > 0 ) { video_array.push( value ); array[index] = '' }
if( value.indexOf( '#offsite' ) > 0 ) { outlink_array.push( value ); array[index] = '' }
if( value.indexOf( '#local' ) > 0 ) { inlink_array.push( value ); array[index] = '' }
} );
url_array = url_array.filter( url => url === "" ? false : true ); // Remove empty elements from url_array
// Display video links, if there are any
video_array.forEach( value => {div_digest += "Video: <a href='" + value + "'>" + value + "</a><br> "; } )
// Display page links if the ?showlinks flag is enabled
if( options_map.showlinks ) {
div_digest += "Outgoing links: ";
outlink_array.forEach( (value,index) => { div_digest += "<a href='" + value.replace('#offsite#link', '') + "'>O" + (index+1) + "</a> " } );
div_digest += "<br>" + "Same-Tumblr links: ";
inlink_array.forEach( (value,index) => { div_digest += "<a href='" + value.replace('#local#link', '') + "'>T" + (index+1) + "</a> " } );
div_digest += "<br>";
}
// Embed high-res images to be seen, clicked, and saved
url_array.forEach( image_url => {
// This clunky <img onError> function looks for a lower-res image if the high-res version doesn't exist.
// Surprisingly, this does still matter. E.g. http://66.media.tumblr.com/ba99a55896a14a2e083cec076f159956/tumblr_inline_nyuc77wUR01ryfvr9_500.gif
// This might mismatch _100 images and _250 links because of that self-erasing clause... but it's super rare, so meh.
var on_error = 'if(this.src.indexOf("_1280")>0){this.src=this.src.replace("_1280","_500");}'; // Swap 1280 for 500
on_error += 'else if(this.src.indexOf("_500")>0){this.src=this.src.replace("_500","_400");}'; // Or swap 500 for 400
on_error += 'else if(this.src.indexOf("_400")>0){this.src=this.src.replace("_400","_250");}'; // Or swap 400 for 250
on_error += 'else{this.src=this.src.replace("_250","_100");this.onerror=null;}'; // Or swap 250 for 100, then give up
on_error += 'document.getElementById("' + image_url + '").href=this.src;'; // Link the image to itself, regardless of size
// Embed images (linked to themselves) and link to photosets
if( image_url.indexOf( "#photoset#" ) > 0 ) { // Before the first image in a photoset, print the photoset link.
var photoset_url = image_url.split( "#" ).pop();
// URL is like tumblr.com/image#photoset#http://tumblr.com/photoset_iframe - separate past last hash... t.
div_digest += " <a href='" + photoset_url + "'>Set:</a>";
}
div_digest += "<a id='" + image_url + "' target='_blank' href='" + image_url + "'>"
+ "<img alt='(Waiting for image)' onerror='" + on_error + "' src='" + image_url + "'></a> ";
} )
div_digest += "<br><a href='" + siteurl + "'>(End of " + siteurl + ")</a>"; // Another link to the page, because I'm tired of scrolling back up.
document.getElementById( pagenum ).innerHTML += div_digest;
} ) // End of 'then( url_array => { } )'
} ) // End of 'then( text => { } )'
} ) // End of 'pages.map( pagenum => { } )'
}
// ------------------------------------ Post-by-post scraper with embedded images ------------------------------------ //
// Scrape each page for /post/ links, scrape each /post/ for content, display in-order with less callback hell
// New layout & new scrape method - not required to be compatible with previous functions
function new_embedded_display() {
// Grab an empty page so that duplicate-removal hides whatever junk is on every single page
// This is DEBUG-ish. It might be slow, barring caching. It might not work due to asynchrony. It could block actual content thanks to 'my best posts' sidebars.
exclude_content_example( site_and_tags + '/page/100000' );
if( isNaN( parseInt( options_map.startpage ) ) || options_map.startpage <= 1 ) { options_map.startpage = 1; }
// "<<< Previous - Next >>>"
var next_link = options_url( "startpage", options_map.startpage + options_map.pagesatonce );
var prev_link = options_url( "startpage", options_map.startpage - options_map.pagesatonce );
var prev_next_controls = "<br>";
if( options_map.startpage > 1 ) { prev_next_controls += "<a href='" + prev_link + "'><<< Previous</a> - "; }
prev_next_controls += "<a href='" + next_link + "'>Next >>></a><br><br>";
mydiv.innerHTML += prev_next_controls;
document.getElementById("bottom_controls_div").innerHTML += prev_next_controls;
// Links out from this mode - scrapewholesite, original mode, maybe other crap
mydiv.innerHTML += "This mode is under development and subject to change.";
mydiv.innerHTML += " - <a href=" + options_url( { everypost:false } ) + ">Return to original image browser</a>" + "<br>" + "<br>";
// "Pages 1 to 10 (of 100) from http://example.tumblr.com"
mydiv.innerHTML += "Pages " + options_map.startpage + " to " + (options_map.startpage + options_map.pagesatonce - 1);
if( !isNaN(options_map.lastpage) ) { mydiv.innerHTML += " (of " + options_map.lastpage + ")"; }
mydiv.innerHTML += " from " + site_and_tags + "<br>";
// Image size options via CSS
mydiv.innerHTML += "<a class='interactive' href='javascript: void(0);' onclick=\"(function(o){ document.body.className = ''; })(this)\">Original image sizes</a> - ";
mydiv.innerHTML += "<a class='interactive' href='javascript: void(0);' onclick=\"(function(o){ document.body.className = 'fixed-width'; })(this)\">Snap columns</a> - ";
mydiv.innerHTML += "<a class='interactive' href='javascript: void(0);' onclick=\"(function(o){ document.body.className = 'fixed-height'; })(this)\">Snap rows</a> - ";
mydiv.innerHTML += "<a class='interactive' href='javascript: void(0);' onclick=\"(function(o){ document.body.className = 'fit-width'; })(this)\">Fit width</a> - ";
mydiv.innerHTML += "<a class='interactive' href='javascript: void(0);' onclick=\"(function(o){ document.body.className = 'fit-height'; })(this)\">Fit height</a> - ";
mydiv.innerHTML += "<a class='interactive' href='javascript: void(0);' onclick=\"(function(o){ document.body.className = 'smart-fit'; })(this)\">Fit both</a><br><br>";
// Messy inline function for toggling page breaks - they're optional because we have post permalinks now
mydiv.innerHTML += "<a href='javascript: void(0);' class='interactive'; onclick=\"(function(o){ \
let mydiv = document.getElementById('maindiv'); \
if( mydiv.className == '' ) { mydiv.className = 'showpagelinks'; } \
else { mydiv.className = ''; } \
})(this)\">Toggle page breaks</a><br><br>";
mydiv.innerHTML += "<span id='0'></span>"; // Empty span for things to be placed after.
posts_placed.push( 0 ); // Because fuck special cases.
// Scrape some pages
for( let x = options_map.startpage; x < options_map.startpage + options_map.pagesatonce; x++ ) {
fetch( site_and_tags + "/page/" + x ).then( r => r.text() ).then( text => {
scrape_by_posts( text, x );
} )
}
}
// Take the HTML from a /page, fetch the /post links, display images
// Probably ought to be despaghettified and combined with the above function, but I was fighting callback hell -hard- after the last major version
// Alternately, split it even further and do some .then( do_this ).then( do_that ) kinda stuff above.
function scrape_by_posts( html_copy, page_number ) {
let posts = links_from_page( html_copy ); // Get links on page
posts = posts.filter( link => { return link.indexOf( '/post/' ) > 0 && link.indexOf( '/photoset' ) < 0; } ); // Keep /post links but not photoset iframes
posts = posts.map( link => { return link.replace( '#notes', '' ); } ); // post/1234 is the same as /post/1234#notes
posts = posts.filter( link => link.indexOf( window.location.host ) > 0 ); // Same-origin filter. Not necessary, but it unclutters the console. Fuckin' CORS.
posts = remove_duplicates( posts ); // De-dupe
// 'posts' now contains an array of /post URLs
// Display link and linebreak before first post on this page
let first_id = posts.map( u => parseInt( u.split( '/' )[4] ) ).sort( ).pop(); // Grab ID from its place in each URL, sort accordingly, take the top one
let page_link = "<span class='pagelink'><hr><a target='_blank' href='" + site_and_tags + "/page/" + page_number + "'> Page " + page_number + "</a>";
if( posts.length == 0 ) { first_id = 1; page_link += " - No images found."; } // Handle empty pages with dummy content. Out of order, but whatever.
page_link += "<br><br></span>";
display_post( page_link, first_id + 0.5 ); // +/- on the ID will change with /chrono, once that matters
posts.map( link => {
fetch( link ).then( r => r.text() ).then( text => {
let sublinks = links_from_page( text );
sublinks = sublinks.filter( s => { return s.indexOf( '.jpg' ) > 0 || s.indexOf( '.jpeg' ) > 0 || s.indexOf( '.png' ) > 0 || s.indexOf( '.gif' ) > 0; } );
sublinks = sublinks.filter( tumblr_blacklist_filter ); // Remove avatars and crap
sublinks = sublinks.map( image_standardizer ); // Clean up semi-dupes (e.g. same image in different sizes -> same URL)
sublinks = sublinks.filter( novelty_filter ); // Global duplicate remover
// Oh. Photosets sort of just... work? That might not be reliable; DownThemAll acts like it can't see the iframes on some themes.
// Yep, they're there. Gonna be hard to notice if/when they fail. Oh well, "not all images are guaranteed to appear."
// Videos will still be weird. (But it does grab their preview thumbnails.)
// Get ID from post URL, e.g. http//example.tumblr.com/post/12345/title => 12345
let post_id = parseInt( link.split( '/' )[4] ); // 12345 as a NUMBER, not a string, doofus
if( sublinks.length > 0 ) { // If this post has images we're displaying -
let this_post = new String;
sublinks.map( url => {
this_post += '<span class="container">';
this_post += '<a alt="(Image)" target="_blank" href="' + url + '">';
this_post += '<img src="' + url + '"></a>';
this_post += '<span class="postlink"><a target="_blank" href="' + link + '">Permalink</a></span></span> ';
} )
display_post( this_post, post_id );
}
} )
} )
}
// Place content on page in descending order according to post ID number
// Consider rejiggering the old scrape method to use this. Move to 'universal' section if so. Alter or spin off to link posts instead?
// Turns out I never implemented ?chrono or ?reverse, so nevermind that for now.
function display_post( content, post_id ) {
let this_node = document.createElement( "span" );
this_node.innerHTML = content;
this_node.id = post_id
// Find lower-numbered node than post_id
let target_id = posts_placed.filter( n => n <= post_id ).sort( ).pop(); // Take the highest number less than (or equal to) post_id
let target_node = document.getElementById( target_id );
// http://stackoverflow.com/questions/4793604/how-to-do-insert-after-in-javascript-without-using-a-library
target_node.parentNode.insertBefore( this_node, target_node ); // Insert our span after the lower-ID node
posts_placed.push( post_id ); // Remember that we added this ID
// No return value
}
// Return ascending or descending order depending on "chrono" setting
// function post_order_sort( a, b )
// ------------------------------------ Universal page-scraping function (and other helper functions) ------------------------------------ //
// Add URLs from a 'blank' page to page_dupe_hash (without just calling soft_scrape_page_promise and ignoring its results)
function exclude_content_example( url ) {
fetch( url ).then( r => r.text() ).then( text => {
let links = links_from_page( text );
links = links.filter( image_standardizer )
links = links.filter( novelty_filter );
} )
// No return value
}
// Spaghetti to reduce redundancy: given a page's text, return a list of URLs.
function links_from_page( html_copy ) {
// Cut off the page at the "More you might like" / "Related posts" footer, on themes that have one
html_copy = html_copy.split( '="related-posts' ).shift();
let http_array = html_copy.split( /['="']http/ ); // Regex split on anything that looks like a source or href declaration
http_array.shift(); // Ditch first element, which is just <html><body> etc.
http_array = http_array.map( s => { // Theoretically parallel .map instead of maybe-linear .forEach or low-level for() loop
s = s.split( /['<>"']/ )[0]; // Terminate each element (split on any terminator, take first subelement)
s = s.replace( /\\/g, '' ); // Remove escaping backslashes (e.g. http\/\/ -> http//)
if( s.indexOf( "%3A%2F%2F" ) > -1 ) { s = decodeURIComponent( s ); } // What is with all the http%3A%2F%2F URLs?
return "http" + s; // Oh yeah, add http back in (regex eats it)
} ) // http_array now contains an array of strings that should be URLs
return http_array;
}
// Filter: Return false for typical Tumblr nonsense (JS, avatars, RSS, etc.)
function tumblr_blacklist_filter( url ) {
if( url.indexOf( "/reblog/" ) > 0 ||
url.indexOf( "/tagged/" ) > 0 || // Might get removed so the script can track and report tag use. Stupid art tags like 'my-draws' or 'art-poop' are a pain to find.
url.indexOf( ".tumblr.com/avatar_" ) > 0 ||
url.indexOf( ".tumblr.com/image/" ) > 0 ||
url.indexOf( ".tumblr.com/rss" ) > 0 ||
url.indexOf( "srvcs.tumblr.com" ) > 0 ||
url.indexOf( "assets.tumblr.com" ) > 0 ||
url.indexOf( "schema.org" ) > 0 ||
url.indexOf( ".js" ) > 0 ||
url.indexOf( ".css" ) > 0 ||
url.indexOf( "twitter.com/intent" ) > 0 || // Weirdly common now
url.indexOf( "ezastumblrscrape" ) > 0 ) // Somehow this script is running on pages being fetched, inserting a link. Okay. Sure.
{ return false } else { return true }
}
// Return standard canonical URL for various resizes of Tumblr images - size of _1280, single CDN
function image_standardizer( url ) {
// Some lower-size images are automatically resized. We'll change the URL to the maximum size just in case, and Tumblr will provide the highest resolution.
// Replace all resizes with _1280 versions. Nearly all _1280 URLs resolve to highest-resolution versions now, so we don't need to e.g. handle GIFs separately.
url = url.replace( "_540.", "_1280." ).replace( "_500.", "_1280." ).replace( "_400.", "_1280." ).replace( "_250.", "_1280." ).replace( "_100.", "_1280." );
// Standardize the CDN subdomain, to prevent duplicates. All images work from all CDNs, right?
if( url.indexOf( ".media.tumblr.com" ) > 0 ) { // For the sake of duplicate removal, whack all 65.tumblr.com, 66, 67, etc., to a single number (presumably a CDN)
var url_parts = url.split( '.' );
url_parts[0] = 'https://66'; // http vs. https doesn't actually matter, right? God forbid you fetch() across origins, but you can embed whatever from wherever.
url = url_parts.join( '.' );
}
// Some URLs have no CDN number, which really screws with duplicate-removal. So does HTTP vs. HTTPS.
if( url.indexOf( "//media." ) > 0 ) { url = url.replace( "//media", "//66.media" ).replace( "http", "https" ); }
return url;
}
// Remove duplicates from an array (from an iterable?) - returns de-duped array
// Credit to http://stackoverflow.com/questions/9229645/remove-duplicates-from-javascript-array for hash-based string method
function remove_duplicates( list ) {
let seen = {};
list = list.filter( function( item ) {
return seen.hasOwnProperty( item ) ? false : ( seen[ item ] = true );
} );
return list;
}
// Filter: Return true ONCE for any given string.
// Global duplicate remover - return false for items found in page_dupe_hash, otherwise add new items to it and return true
// Now also counts instances of each non-unique argument
function novelty_filter( url ) {
// return page_dupe_hash.hasOwnProperty( url ) ? false : ( page_dupe_hash[ url ] = true );
if( page_dupe_hash.hasOwnProperty( url ) ) {
page_dupe_hash[ url ] += 1;
return false;
} else {
page_dupe_hash[ url ] = 1;
return true;
}
}
// Given the bare HTML of a Tumblr page, return an array of Promises for image/video/link URLs
function soft_scrape_page_promise( html_copy ) {
// Linear portion:
let http_array = links_from_page( html_copy ); // Split bare HTML into link and image sources
http_array.filter( url => url.indexOf( '/tagged/' ) > 0 ).filter( novelty_filter ); // Track tags for statistics, before the blacklist removes them
http_array = http_array.filter( tumblr_blacklist_filter ); // Blacklist filter for URLs - typical garbage
function is_an_image( url ) {
// Whitelist URLs with image file extensions or Tumblr iframe indicators
var image_link = false;
if( url.indexOf( ".gif" ) > 0 ) { image_link = true; }
if( url.indexOf( ".jpg" ) > 0 ) { image_link = true; }
if( url.indexOf( ".jpeg" ) > 0 ) { image_link = true; }
if( url.indexOf( ".png" ) > 0 ) { image_link = true; }
if( url.indexOf( "/photoset_iframe" ) > 0 ) { image_link = true; }
if( url.indexOf( ".tumblr.com/video/" ) > 0 ) { image_link = true; }
return image_link;
}
// Separate the images
http_array = http_array.map( url => {
if( is_an_image( url ) ) { // If it's an image, get rid of any Tumblr variability about resolution or CDNs, to avoid duplicates with nonmatching URLs
return image_standardizer( url );
} else { // Else if not an image
if( url.indexOf( window.location.host ) > 0 ) { url += "#local" } else { url += "#offsite" } // Mark in-domain vs. out-of-domain URLs.
if( options_map.imagesonly ) { return ""; } // ?imagesonly to skip links on ?scrapewholesite
return url + "#link";
}
} )
.filter( n => { // Remove all empty strings, where "empty" can involve a lot of #gratuitous #tags.
if( n.split("#")[0] === "" ) { return false } else { return true }
} );
http_array = remove_duplicates( http_array ); // Remove duplicates within the list
http_array = http_array.filter( novelty_filter ); // Remove duplicates throughout the page
// Should this be skipped on scrapewholesite? Might be slowing things down.
// Async portion:
// Return promise that resolves to list of URLs, including fetched videos and photoset sub-images
return Promise.all( http_array.map( s => {
if( s.indexOf( '/photoset_iframe' ) > 0 ) { // If this URL is a photoset, return a promise for an array of URLs
return fetch( s ).then( r => r.text() ).then( text => { // Fetch URL, get body text from response
var photos = text.split( 'href="' ); // Isolate photoset elements from href= declarations
photos.shift(); // Get rid of first element because it's everything before the first "href"
photos = photos.map( p => p.split( '"' )[0] + "#photoset" ); // Tag all photoset images as such, just because
photos[0] += "#" + s; // Tag first image in set with photoset URL so browse mode can link to it
return photos;
} )
}
else if ( s.indexOf( '.tumblr.com/video/' ) > 0 ) { // Else if this URL is an embedded video, return a Tumblr-standard URL for the bare video file
var subdomain = s.split( '/' ); // E.g. https://www.tumblr.com/video/examplename/123456/500/ -> https,,www.tumblr.com,video,examplename,123456,500
var video_post = window.location.protocol + "//" + subdomain[4] + ".tumblr.com/post/" + subdomain[5] + "/";
// e.g. http://examplename.tumblr.com/post/123456/ - note window.location.protocol vs. subdomain[0], maintaining http/https locally
return fetch( video_post ).then( r => r.text() ).then( text => {
if( text.indexOf( 'og:image' ) > 0 ) { // property="og:image" content="http://67.media.tumblr.com/tumblr_123456_frame1.jpg" --> tumblr_123456_frame1.jpg
var video_name = text.split( 'og:image' )[1].split( 'media.tumblr.com' )[1].split( '"' )[0].split( '/' ).pop();
} else if( text.indexOf( 'poster=' ) > 0 ) { // poster='https://31.media.tumblr.com/tumblr_nuzyxqeJNh1rjoppl_frame1.jpg'
var video_name = text.split( "poster='" )[1].split( 'media.tumblr.com' )[1].split( "'" )[0].split( '/' ).pop(); // Bandaid solution. Tumblr just sucks.
} else {
return video_post + '#video'; // Current methods miss the whole page if these splits miss, so fuck it, just return -something.-
}
// tumblr_abcdef12345_frame1.jpg -> tumblr_abcdef12345.mp4
video_name = "tumblr_" + video_name.split( '_' )[1] + ".mp4#video";
video_name = "https://vt.tumblr.com/" + video_name; // Standard Tumblr-wide video server
return video_name; // Should be e.g. https://vt.tumblr.com/tumblr_abcdef12345.mp4
} )
}
return Promise.resolve( [s] ); // Else if this URL is singular, return a single element... resolved as a promise for Promise.all, in an array for Array.concat. Whee.
} ) )
.then( nested_array => { // Given the Promise.all'd array of resolved URLs and URL-arrays
return [].concat.apply( [], nested_array ); // Concatenate array of arrays - apply turns array into comma-separated list, concat turns CSL of arrays into a single array
} )
}
// Returns a URL with all the options_map options in ?key=value format - optionally allowing changes to options in the returned URL
// Valid uses:
// options_url() -> all current settings, no changes
// options_url( "name", number ) -> ?name=number
// options_url( "name", true ) -> ?name
// options_url( {name:number} ) -> ?name=number
// options_url( {name:number, other:true} ) -> ?name=number?other
// Note that simply passing "name" will remove ?name, not add it, because the value will evaluate false. I should probably change this? Eh, { key } without :value causes errors.
function options_url( key, value ) {
var copy_map = new Object();
for( var i in options_map ) { copy_map[ i ] = options_map[ i ]; }
// In any sensible language, this would read "copy_map = object_map." Javascript genuinely does not know how to copy objects. Fuck's sake.
if( typeof key === 'string' ) { // the parameters are optional. just calling options_url() will return e.g. example.tumblr.com/archive?ezastumblrscrape?startpage=1
if( !value ) { value = false; } // if there's no value then use false
copy_map[ key ] = value; // change this key, so we can e.g. link to example.tumblr.com/archive?ezastumblrscrape?startpage=2
}
else if( typeof key === 'object' ) { // If we're passed a hashmap
for( var i in key ) {
if( ! key[ i ] ) { key[ i ] = false; } // Turn any false evaluation into an explicit boolean - this might not be necessary
copy_map[ i ] = key[ i ]; // Press key-object values onto copy_map-object values
}
}
// Construct URL from options
var base_site = window.location.href.substring( 0, window.location.href.indexOf( "?" ) ); // should include /archive, but if not, it still works on most pages
for( var k in copy_map ) { // JS maps are weird. We're actually setting attributes of a generic object. So map[ "thumbnails" ] is the same as map.thumbnails.
if( copy_map[ k ] ) { // Unless the value is False, print a ?key=value pair.
base_site += "?" + k;
if( copy_map[ k ] !== true ) { base_site += "=" + copy_map[ k ]; } // If the value is boolean True, just print the value as a flag.
}
}
return base_site;
}