Provides direct links to Rule34 images in list view
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// ==UserScript==
// @name Rule34 Direct Links
// @namespace potato_potato
// @version 0.2.4
// @description Provides direct links to Rule34 images in list view
// @author potato_potato
// @match https://rule34.xxx/index.php?page=post&s=list*
// @exclude https://rule34.xxx/index.php?page=post&s=view*
// @grant none
// @license MIT
// ==/UserScript==
const TEST_BANNER = false;
(() => {
'use strict';
let thumbs = Array.from(document.getElementsByClassName('thumb'));
let errors = [];
thumbs.forEach((thumb, index) => {
try {
// Just in case something changes, so we don't just flat out crash on our end.
if (thumb.children.length > 0 && thumb.children[0].children.length > 0 && thumb.children[0].children[0].tagName == 'IMG') {
// Guaranteed due to the above check.
let img = thumb.children[0].children[0];
let span = document.createElement('span');
let link = img.src.replace("/thumbnails/", "/images/").replace("/thumbnail_", "/").replace(/\.jpg\?\d+$/, '');
// TODO: Determine a better way to check for the `animated` tag, and potentially a way to determine if the
// content is a gif or webm file.
let tags = img.getAttribute('alt');
if (tags.includes('video')) {
span.innerHTML = `<br><a href="${link}.mp4">mp4</a>`;
} else if (tags.includes('webm')) {
span.innerHTML = `<br><a href="${link}.webm">webm</a>`;
} else if (tags.includes('gif') || tags.includes('animated_gif')) {
span.innerHTML = `<br><a href="${link}.gif">gif</a>`;
} else if (tags.includes('animated')) {
span.innerHTML = `<br><a href="${link}.gif">gif</a> <a href="${link}.webm">webm</a>`;
} else {
// Unfortunately, there's no way to tell what the format of a given image is. Perhaps it would be worth requesting something like
// an automatic tag for the extension? `png`, `jpg`, `jpeg`, `gif`, etc as a meta tag?
span.innerHTML = `<br><a href="${link}.jpeg">jpeg</a> <a href="${link}.jpg">jpg</a> <a href="${link}.png">png</a>`;
}
thumb.append(span);
} else {
errors.push({
cause: 'Incorrect data structure for `thumb` instance',
link: null, // We don't HAVE a link, due to bad data structure
thumb_index: index,
});
}
} catch (e) {
errors.push({
cause: 'Unknown cause. Page structure change?',
link: null,
thumb_index: index,
});
}
index++;
});
// TODO: Look into making the banner less hacky.
if (errors.length > 0 || TEST_BANNER) {
console.log("One or more errors have occured while attaching direct links to thumbnail elements:");
console.log(errors);
try {
let banner_container = document.createElement('div');
let banner_text = document.createElement('span');
banner_text.textContent = 'Errors have occured while attaching direct links to thumbnails! Please check the console output!';
banner_text.style['padding-top'] = '1em';
banner_text.style['padding-bottom'] = '1em';
banner_text.style.display = 'block';
banner_text.style['font-size'] = 'large';
let banner_source_info = document.createElement('span');
banner_source_info.textContent = 'Rule34 Direct Links Userscript';
banner_source_info.style['font-size'] = 'x-small';
banner_source_info.style.right = '0.5em';
banner_source_info.style.bottom = '0.25em';
banner_source_info.style.position = 'absolute';
banner_container.style.position = 'relative';
banner_container.style.width = '100%';
banner_container.style['text-align'] = 'center';
banner_container.style.backgroundColor = '#E0A0A0';
banner_container.appendChild(banner_text);
banner_container.appendChild(banner_source_info);
document.getElementById('content').prepend(banner_container);
} catch (e) {
console.log("Unable to attach error banner!");
console.log(e);
}
}
})();