зеркало из https://github.com/mozilla/gecko-dev.git
38 строки
1.2 KiB
JavaScript
38 строки
1.2 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
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var EXPORTED_SYMBOLS = ["ForgetAboutSite"];
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var ForgetAboutSite = {
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async removeDataFromDomain(aDomain) {
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let errorCount = await new Promise(resolve => {
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Services.clearData.deleteDataFromHost(
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aDomain,
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true /* user request */,
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Ci.nsIClearDataService.CLEAR_FORGET_ABOUT_SITE,
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errorCode => resolve(bitCounting(errorCode))
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);
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});
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if (errorCount !== 0) {
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throw new Error(
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`There were a total of ${errorCount} errors during removal`
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);
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}
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},
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};
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function bitCounting(value) {
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// To know more about how to count bits set to 1 in a numeric value, see this
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// interesting article:
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// https://blogs.msdn.microsoft.com/jeuge/2005/06/08/bit-fiddling-3/
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const count =
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value - ((value >> 1) & 0o33333333333) - ((value >> 2) & 0o11111111111);
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return ((count + (count >> 3)) & 0o30707070707) % 63;
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}
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