Removes links to objectionable adult content.
// ==UserScript==
// @name Anime1 filter
// @version 0.3.2
// @description Removes links to objectionable adult content.
// @match *.anime1.com/*
// @copyright 2012-2014, Chaim-Leib Halbert
// @namespace https://greatest.deepsurf.us/users/910
// ==/UserScript==
// Documentation: https://github.com/chaimleib/anime1-filter
/* ### Utilities ### */
var MutationObserver = window.MutationObserver || window.WebKitMutationObserver;
var DEBUG = true;
function log() {
if (DEBUG)
console.log.apply(console, arguments);
}
function warn() {
console.warn.appy(console, arguments);
}
// whether val is in arr
function inArray(val, arr) {
// apparently, a decrementing while loop is the fastest way to iterate
var i = arr.length;
while(i--) {
if (val === arr[i]) return true;
}
return false;
}
// used for NodeLists, which are not quite like arrays, and have no forEach()
// method.
// https://developer.mozilla.org/en-US/docs/Web/API/NodeList
function forEach(arr, func) {
var i = arr.length;
while (i--) func(arr[i], i, arr);
}
/* ### Main logic ### */
// Lower-case list of terms to filter
var censor_list = [
'ecchi',
'harem',
'shoujo ai',
'shonen ai',
'shounen ai',
//'romance',
];
// is str in the blacklist?
function should_censor(str) {
return inArray(str.toLowerCase(), censor_list);
}
// called when jQ is ready
function main(jQ) {
// watch for dynamically-loaded billboards. takes an array of
// MutationRecords.
// https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver#MutationRecord
function billboards_were_added(mutations) {
// I only care about addedNodes, not removedNodes, so filter them
mutations = mutations.filter(function (el) {
return el.addedNodes.length;
});
if (!mutations.length)
return;
forEach(mutations, function (m) {
forEach(m.addedNodes, checkNode);
});
}
// check each changed node for a billboard and censor it. Takes a Node.
// https://developer.mozilla.org/en-US/docs/Web/API/Node
function checkNode(n) {
if (!n.classList)
return;
// I have to check for 'an-text' class first, because if I were
// to check for the enclosing 'an-box' class, it would break.
// Apparently, Anime1.com first loads up empty 'an-box'es, then
// fills them with images and data. I need to make sure the 'an-text'
// elements are present before I can tell whether to censor the
// anime or not.
if (inArray('an-text', n.classList)) {
check_billboard(n.parentNode);
}
}
// remove billboard if it has a blacklisted genre
function check_billboard(bb) {
if (should_censor_billboard(bb)) {
remove_billboard(bb);
}
}
// whether the billboard is for an anime in a blacklisted genre
function should_censor_billboard(bb) {
var genres = jQ(bb).find('div.dgenres a');
for (var i=0; i<genres.length; i++) {
var genre = genres[i].innerHTML;
if (should_censor(genre)) return true;
}
return false;
}
// remove the billboard from the DOM
function remove_billboard(bb) {
var name = get_billboard_name(bb);
bb.parentNode.removeChild(bb);
log('!!Removed: ' + name);
}
// extract the name of the billboard's anime
function get_billboard_name(bb) {
var heads = jQ(bb).find('h2');
var name;
if (!heads.length) {
warn('could not read bb name!');
warn(bb);
name = "???";
}
else {
name = heads[0].innerHTML;
}
return name;
}
// filters the list of billboards on initial document load
function start_check_billboards() {
var bbs = jQ('div.an-box');
if (!bbs.length) {
log('no bbs found!');
observer.disconnect();
return;
}
else {
log('found ' + bbs.length + ' billboards.');
}
forEach(bbs, check_billboard);
}
/* actually set up the observer to watch for changes */
var observer = new MutationObserver(billboards_were_added);
// define what element should be observed by the observer
// and what types of mutations trigger the callback
observer.observe(document.body, {
subtree: true,
childList: true,
});
// filters the genre links list (/content/genre)
function start_check_genre_links() {
var genre_ary = jQ('.popularity-by-genre > ul a');
if (genre_ary.length === 0) {
log('no genres found!');
return;
}
for (var i=0; i<genre_ary.length; i++) {
var a = genre_ary[i];
var li = a.parentNode;
if (should_censor(a.innerHTML)) {
li.parentNode.removeChild(li);
}
}
}
start_check_genre_links();
start_check_billboards();
}
/* ### Bootstrapper ### */
// wait for jQuery, then call main()
function addJQuery(callback) {
document.addEventListener('load', function() {
var script = document.createElement("script");
script.setAttribute("src", "//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js");
script.textContent = "(" + callback.toString() + ")(jQuery);";
//script.textContent = "window.jQ=$;(" + callback.toString() + ")();";
document.body.appendChild(script);
}, false);
}
// Make sure jQ is loaded before calling main()
if (jQuery !== undefined) {
log('Skipping delay for jQ')
log(main.toString());
main(jQuery);
} else {
log('Waiting for jQuery...');
addJQuery(main);
}