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| 1 | <?php |
| 2 | /** |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 16 | * http://www.gnu.org/copyleft/gpl.html |
| 17 | * |
| 18 | * @file |
| 19 | */ |
| 20 | |
| 21 | namespace Wikimedia\Bcp47Code; |
| 22 | |
| 23 | /** |
| 24 | * This is a simple value object demonstrating the simplest possible |
| 25 | * implementation of the Bcp47Code interface. |
| 26 | */ |
| 27 | class Bcp47CodeValue implements Bcp47Code { |
| 28 | |
| 29 | /** |
| 30 | * The BCP 47 code corresponding to this language. |
| 31 | * @var string |
| 32 | */ |
| 33 | private $code; |
| 34 | |
| 35 | /** |
| 36 | * Create a new instance of this value object representing a language with |
| 37 | * the given BCP 47 code. |
| 38 | * @param string $bcp47code the BCP 47 code for the language |
| 39 | */ |
| 40 | public function __construct( string $bcp47code ) { |
| 41 | $this->code = $bcp47code; |
| 42 | } |
| 43 | |
| 44 | /** @inheritDoc */ |
| 45 | public function toBcp47Code(): string { |
| 46 | return $this->code; |
| 47 | } |
| 48 | |
| 49 | /** @inheritDoc */ |
| 50 | public function isSameCodeAs( Bcp47Code $other ): bool { |
| 51 | return ( $this === $other ) || self::isSameCode( $this, $other ); |
| 52 | } |
| 53 | |
| 54 | public function __toString() { |
| 55 | return $this->toBcp47Code(); |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * Simple helper to coerce any Bcp47Code into a Bcp47CodeValue. |
| 60 | * @param Bcp47Code $language an object representing a language |
| 61 | * @return Bcp47CodeValue a simple value object representing a language. |
| 62 | */ |
| 63 | public static function fromBcp47Code( Bcp47Code $language ): Bcp47CodeValue { |
| 64 | if ( $language instanceof Bcp47CodeValue ) { |
| 65 | return $language; |
| 66 | } |
| 67 | return new Bcp47CodeValue( $language->toBcp47Code() ); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Simple helper to compare Bcp47Code in the proper case-insensitive |
| 72 | * manner. |
| 73 | * @param Bcp47Code $a |
| 74 | * @param Bcp47Code $b |
| 75 | * @return bool True if the bcp-47 codes should be considered equal |
| 76 | */ |
| 77 | public static function isSameCode( Bcp47Code $a, Bcp47Code $b ) { |
| 78 | return ( $a === $b ) || strcasecmp( $a->toBcp47Code(), $b->toBcp47Code() ) === 0; |
| 79 | } |
| 80 | } |