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1 /* This Source Code Form is subject to the terms of the Mozilla Public |
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2 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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4 |
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5 "use strict"; |
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6 |
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7 module.metadata = { |
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8 "stability": "unstable" |
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9 }; |
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10 |
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11 const { Cu } = require("chrome"); |
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12 |
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13 // Passing an empty object as second argument to avoid scope's pollution |
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14 const { atob, btoa } = Cu.import("resource://gre/modules/Services.jsm", {}); |
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15 |
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16 function isUTF8(charset) { |
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17 let type = typeof charset; |
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18 |
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19 if (type === "undefined") |
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20 return false; |
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21 |
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22 if (type === "string" && charset.toLowerCase() === "utf-8") |
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23 return true; |
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24 |
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25 throw new Error("The charset argument can be only 'utf-8'"); |
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26 } |
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27 |
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28 exports.decode = function (data, charset) { |
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29 if (isUTF8(charset)) |
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30 return decodeURIComponent(escape(atob(data))) |
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31 |
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32 return atob(data); |
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33 } |
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34 |
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35 exports.encode = function (data, charset) { |
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36 if (isUTF8(charset)) |
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37 return btoa(unescape(encodeURIComponent(data))) |
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38 |
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39 return btoa(data); |
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40 } |