Greasy Fork is available in English.
Few utils which help to bypass Adblock detectors
此脚本不应直接安装，它是一个供其他脚本使用的外部库。如果您需要使用该库，请在脚本元属性加入：// @require https://update.greasyfork.org/scripts/7465/43841/Disarm%20Adblock%20Detectors.js
/*jslint browser: true, devel: true */
/*global unsafeWindow, exportFunction */
var DAD = (function (window, unsafeWindow) {
"use strict";
var utils, debug,
slice = Array.prototype.slice;
function noop() {
}
function injectCSS(css) {
var style,
head = document.getElementsByTagName("head")[0];
if (head) {
style = document.createElement("style");
style.textContent = css;
style.type = "text/css";
head.appendChild(style);
}
}
function wrapValue(value, writable) {
var wrapper;
writable = !!writable;
if (value instanceof Function) {
wrapper = exportFunction(value, unsafeWindow);
} else if (value instanceof Array) {
wrapper = exportProperties(new unsafeWindow.Array(), value, writable);
} else if (value instanceof Object) {
wrapper = exportProperties(new unsafeWindow.Object(), value, writable);
}
return wrapper || value;
}
function wrapArgs(args) {
var index, value;
args = wrapValue(args, true);
for (index = args.length - 1; index >= 0; --index) {
value = args[index];
if (typeof value === "function" && !value.isProxy) {
createProxy(args, index, true);
}
}
return args;
}
function exportProperty(target, name, value, writable) {
writable = !!writable;
if (debug) {
console.log("export property " + name);
}
var descriptor = {
configurable: false,
enumerable: true,
value: wrapValue(value, writable),
writable: writable
};
try {
Object.defineProperty(target, name, descriptor);
} catch (exception) {
console.error(exception);
}
return target[name];
}
function exportProperties(target, object, writable) {
writable = !!writable;
var index, key;
if (object instanceof Array) {
for (index = object.length - 1; index >= 0; --index) {
exportProperty(target, index, object[index], writable);
}
} else if (object instanceof Object) {
for (key in object) {
if (object.hasOwnProperty(key)) {
exportProperty(target, key, object[key], writable);
}
}
}
return target;
}
function createProxy(target, name, fn, writable) {
if (debug) {
console.log("createProxy", arguments);
}
var caller, handler, proxy,
native = target[name];
if (native.isProxy) {
console.warn("method " + name + " of", target, "is already a proxy");
} else {
caller = function (args) {
return native.apply(target, wrapArgs(args));
};
if (typeof fn === "function") {
writable = !!writable;
handler = function () {
return fn(caller, wrapArgs(slice.call(arguments)));
};
} else {
writable = !!fn;
handler = function () {
return caller(slice.call(arguments));
};
}
proxy = exportProperty(target, name, handler, writable);
proxy.isProxy = true;
}
return target[name];
}
function extractString(script, options) {
var endIndex, string,
startIndex = 0;
options = options || {};
if (options.hasOwnProperty("before")) {
startIndex = script.indexOf(options.before) + options.before.length;
}
if (!options.hasOwnProperty("separator")) {
options.separator = "'";
}
if (!options.hasOwnProperty("start")) {
options.start = "";
}
if (startIndex > -1) {
startIndex = script.indexOf(options.separator + options.start, startIndex) + 1;
endIndex = script.indexOf(options.separator, startIndex);
string = script.substring(startIndex, endIndex);
} else {
string = null;
}
return string;
}
function DAD(filter, config) {
if (filter instanceof RegExp) {
if (!filter.test(location.href)) {
return;
}
} else {
config = filter;
}
if (typeof config === "function") {
try {
config = config(unsafeWindow, utils);
} catch (exception) {
console.error(exception);
}
}
debug = !!config.debug;
if (typeof config.css === "string") {
injectCSS(config.css);
}
if (typeof config.exports === "object") {
exportProperties(unsafeWindow, config.exports);
}
if (typeof config.init === "function") {
window.addEventListener("DOMContentLoaded", function () {
try {
config.init();
} catch (exception) {
console.error(exception);
}
}, true);
}
}
utils = {
noop: noop,
createProxy: createProxy,
extractString: extractString
};
return DAD;
}(this, unsafeWindow));