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1 /* | |
2 * This file is part of Adblock Plus <https://adblockplus.org/>, | |
3 * Copyright (C) 2006-present eyeo GmbH | |
4 * | |
5 * Adblock Plus is free software: you can redistribute it and/or modify | |
6 * it under the terms of the GNU General Public License version 3 as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * Adblock Plus is distributed in the hope that it will be useful, | |
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 * GNU General Public License for more details. | |
13 * | |
14 * You should have received a copy of the GNU General Public License | |
15 * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>. | |
16 */ | |
17 | |
18 /* global publicSuffixes */ | |
19 | |
20 /** @module tldjs */ | |
21 | |
22 "use strict"; | |
23 | |
24 /** | |
25 * Get the base domain for given hostname. | |
26 * | |
27 * @param {string} hostname | |
28 * @return {string} | |
29 */ | |
30 exports.getDomain = hostname => | |
31 { | |
32 let bits = hostname.split("."); | |
33 let cutoff = bits.length - 2; | |
34 | |
35 for (let i = 0; i < bits.length; i++) | |
36 { | |
37 let offset = publicSuffixes[bits.slice(i).join(".")]; | |
38 | |
39 if (typeof offset != "undefined") | |
40 { | |
41 cutoff = i - offset; | |
42 break; | |
43 } | |
44 } | |
45 | |
46 if (cutoff <= 0) | |
47 return hostname; | |
48 | |
49 return bits.slice(cutoff).join("."); | |
50 }; | |
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