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<?php |
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namespace Wikibase\DataModel\Services\Statement; |
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use Wikibase\DataModel\Entity\EntityIdParser; |
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use Wikibase\DataModel\Entity\EntityIdParsingException; |
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use Wikibase\DataModel\Statement\StatementGuid; |
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/** |
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* @since 1.1 |
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* |
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* @license GPL-2.0-or-later |
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* @author Katie Filbert < [email protected] > |
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*/ |
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class StatementGuidValidator { |
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/** |
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* @var EntityIdParser |
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*/ |
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private $entityIdParser; |
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public function __construct( EntityIdParser $entityIdParser ) { |
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$this->entityIdParser = $entityIdParser; |
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} |
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/** |
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* Validates a statement guid |
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* |
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* @since 0.4 |
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* |
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* @param string $guid |
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* |
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* @return bool |
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*/ |
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public function validate( $guid ) { |
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if ( !$this->validateFormat( $guid ) ) { |
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return false; |
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} |
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$guidParts = explode( StatementGuid::SEPARATOR, $guid ); |
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if ( !$this->validateStatementGuidPrefix( $guidParts[0] ) || !$this->validateGuid( $guidParts[1] ) ) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Basic validation for statement guid format |
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* |
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* @since 0.4 |
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* |
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* @param string $guid |
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* |
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* @return bool |
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*/ |
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public function validateFormat( $guid ) { |
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if ( !is_string( $guid ) ) { |
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return false; |
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} |
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$keyParts = explode( '$', $guid ); |
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if ( count( $keyParts ) !== 2 ) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Validate the second part of a statement guid, after the $ |
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* |
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* @since 0.4 |
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* |
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* @param string $guid |
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* |
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* @return bool |
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*/ |
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private function validateGuid( $guid ) { |
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return (bool)preg_match( |
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'/^\{?[A-Z\d]{8}-[A-Z\d]{4}-[A-Z\d]{4}-[A-Z\d]{4}-[A-Z\d]{12}\}?\z/i', |
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$guid |
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); |
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} |
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/** |
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* Validate the statement guid prefix is a valid entity id |
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* |
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* @since 0.4 |
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* |
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* @param string $prefixedId |
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* |
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* @return bool |
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*/ |
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private function validateStatementGuidPrefix( $prefixedId ) { |
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try { |
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$this->entityIdParser->parse( $prefixedId ); |
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return true; |
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} catch ( EntityIdParsingException $ex ) { |
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return false; |
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} |
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} |
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} |
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wmde /
WikibaseDataModelServices
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