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<?php |
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namespace Wikibase\DataModel\Services\EntityId; |
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use Wikibase\DataModel\Entity\EntityId; |
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use Wikibase\DataModel\Entity\EntityIdParser; |
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use Wikibase\DataModel\Entity\EntityIdParsingException; |
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/** |
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* EntityIdParser that strips a fixed prefix and parses the remaining suffix as an EntityId. |
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* This can be used to parse entity URIs into EntityId objects. |
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* |
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* @since 1.1 |
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* |
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* @license GPL-2.0+ |
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* @author Daniel Kinzler |
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*/ |
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class PrefixedEntityIdParser implements EntityIdParser { |
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/** |
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* @var string |
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*/ |
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private $prefix; |
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/** |
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* @var EntityIdParser |
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*/ |
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private $idParser; |
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/** |
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* @param string $prefix The prefix to be stripped. Stripping is case sensitive. |
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* @param EntityIdParser $idParser |
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*/ |
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public function __construct( $prefix, EntityIdParser $idParser ) { |
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$this->prefix = $prefix; |
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$this->idParser = $idParser; |
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} |
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/** |
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* Parses the given string into an EntityId by first stripping a fixed prefix. |
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* If the string does not start with the expected prefix, an EntityIdParsingException |
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* is thrown. |
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* |
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* @param string $idSerialization An entity ID with some prefix attached, e.g. an entity URI. |
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* |
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* @throws EntityIdParsingException If the string does not start with the expected prefix, |
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* or the remaining suffix is not a valid entity ID string. |
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* @return EntityId |
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*/ |
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public function parse( $idSerialization ) { |
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$prefixLength = strlen( $this->prefix ); |
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if ( strncmp( $idSerialization, $this->prefix, $prefixLength ) !== 0 ) { |
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throw new EntityIdParsingException( 'Missing expected prefix "' . $this->prefix |
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. '" in "' . $idSerialization . '"' ); |
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} |
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$idSerialization = substr( $idSerialization, $prefixLength ); |
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return $this->idParser->parse( $idSerialization ); |
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} |
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} |
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wmde /
WikibaseDataModelServices
