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| 1 | <?php |
| 2 | /** |
| 3 | * Copyright 2014 |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 18 | * http://www.gnu.org/copyleft/gpl.html |
| 19 | * |
| 20 | * @file |
| 21 | */ |
| 22 | |
| 23 | namespace MediaWiki\Config; |
| 24 | |
| 25 | /** |
| 26 | * Provides a fallback sequence for Config objects |
| 27 | * |
| 28 | * @since 1.24 |
| 29 | */ |
| 30 | class MultiConfig implements Config { |
| 31 | |
| 32 | /** |
| 33 | * Array of Config objects to use |
| 34 | * Order matters, the Config objects |
| 35 | * will be checked in order to see |
| 36 | * whether they have the requested setting |
| 37 | * |
| 38 | * @var Config[] |
| 39 | */ |
| 40 | private $configs; |
| 41 | |
| 42 | /** |
| 43 | * @param Config[] $configs |
| 44 | */ |
| 45 | public function __construct( array $configs ) { |
| 46 | $this->configs = $configs; |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * @inheritDoc |
| 51 | */ |
| 52 | public function get( $name ) { |
| 53 | foreach ( $this->configs as $config ) { |
| 54 | if ( $config->has( $name ) ) { |
| 55 | return $config->get( $name ); |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | throw new ConfigException( __METHOD__ . ": undefined option: '$name'" ); |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * @inheritDoc |
| 64 | */ |
| 65 | public function has( $name ) { |
| 66 | foreach ( $this->configs as $config ) { |
| 67 | if ( $config->has( $name ) ) { |
| 68 | return true; |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | return false; |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | /** @deprecated class alias since 1.41 */ |
| 77 | class_alias( MultiConfig::class, 'MultiConfig' ); |