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| 1 | <?php |
| 2 | |
| 3 | // {{{ License |
| 4 | // This file is part of GNU social - https://www.gnu.org/software/social |
| 5 | // |
| 6 | // GNU social is free software: you can redistribute it and/or modify |
| 7 | // it under the terms of the GNU Affero General Public License as published by |
| 8 | // the Free Software Foundation, either version 3 of the License, or |
| 9 | // (at your option) any later version. |
| 10 | // |
| 11 | // GNU social is distributed in the hope that it will be useful, |
| 12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | // GNU Affero General Public License for more details. |
| 15 | // |
| 16 | // You should have received a copy of the GNU Affero General Public License |
| 17 | // along with GNU social. If not, see <http://www.gnu.org/licenses/>. |
| 18 | // }}} |
| 19 | |
| 20 | namespace App\Util; |
| 21 | |
| 22 | use App\Core\Log; |
| 23 | use App\Util\Exception\ServerException; |
| 24 | |
| 25 | abstract class Bitmap |
| 26 | { |
| 27 | /** |
| 28 | * Convert from an integer to an onject or an array of constants for |
| 29 | * set each bit. If $instance, return an object with the corresponding |
| 30 | * properties set |
| 31 | */ |
| 32 | private static function _to(int $r, bool $instance) |
| 33 | { |
| 34 | $init = $r; |
| 35 | $class = get_called_class(); |
| 36 | if ($instance) { |
| 37 | $obj = new $class; |
| 38 | } else { |
| 39 | $vals = []; |
| 40 | } |
| 41 | |
| 42 | $consts = (new \ReflectionClass($class))->getConstants(); |
| 43 | $have_prefix = false; |
| 44 | if (isset($consts['PREFIX'])) { |
| 45 | $have_prefix = true; |
| 46 | unset($consts['PREFIX']); |
| 47 | } |
| 48 | |
| 49 | foreach ($consts as $c => $v) { |
| 50 | $b = ($r & $v) !== 0; |
| 51 | if ($instance) { |
| 52 | $c = strtolower($c); |
| 53 | $obj->{$c} = $b; |
| 54 | } |
| 55 | if ($b) { |
| 56 | $r -= $v; |
| 57 | if (!$instance) { |
| 58 | $vals[] = ($have_prefix ? $class::PREFIX : '') . $c; |
| 59 | } |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | if ($r != 0) { |
| 64 | Log::error('Bitmap to array conversion failed'); |
| 65 | throw new ServerException("Bug in bitmap conversion for class {$class} from value {$init}"); |
| 66 | } |
| 67 | |
| 68 | if ($instance) { |
| 69 | return $obj; |
| 70 | } else { |
| 71 | return $vals; |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | public static function create(int $r): self |
| 76 | { |
| 77 | return self::_to($r, true); |
| 78 | } |
| 79 | |
| 80 | public static function toArray(int $r): array |
| 81 | { |
| 82 | return self::_to($r, false); |
| 83 | } |
| 84 | } |