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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
module.metadata = {
"stability": "unstable"
};
const { Cu } = require("chrome");
// Passing an empty object as second argument to avoid scope's pollution
// (devtools loader injects these symbols as global and prevent using
// const here)
var { atob, btoa } = Cu.import("resource://gre/modules/Services.jsm", {});
function isUTF8(charset) {
let type = typeof charset;
if (type === "undefined")
return false;
if (type === "string" && charset.toLowerCase() === "utf-8")
return true;
throw new Error("The charset argument can be only 'utf-8'");
}
function toOctetChar(c) {
return String.fromCharCode(c.charCodeAt(0) & 0xFF);
}
exports.decode = function (data, charset) {
if (isUTF8(charset))
return decodeURIComponent(escape(atob(data)))
return atob(data);
}
exports.encode = function (data, charset) {
if (isUTF8(charset))
return btoa(unescape(encodeURIComponent(data)))
data = data.replace(/[^\x00-\xFF]/g, toOctetChar);
return btoa(data);
}
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