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<?php
namespace SMW;
use SMWContainerSemanticData as ContainerSemanticData;
use SMWDataValue as DataValue;
use SMWDIBlob as DIBlob;
use SMWDIContainer as DIContainer;
/**
* The handler encodes errors into a representation that can be retrieved from
* the back-end and turn it into a string representation at a convenient time.
*
* @license GNU GPL v2+
* @since 2.5
*
* @author mwjames
*/
class ProcessingErrorMsgHandler {
/**
* @var DIWikiPage
*/
private $subject;
/**
* @since 2.5
*
* @param DIWikiPage $subject
*/
public function __construct( DIWikiPage $subject ) {
$this->subject = $subject;
}
/**
* @since 3.0
*
* @param string $message
*
* @return DIProperty|null
*/
public static function grepPropertyFromRestrictionErrorMsg( $message ) {
return PropertyRestrictionExaminer::grepPropertyFromRestrictionErrorMsg( $message );
}
/**
* Turns an encoded array of messages or text elements into a compacted array
* with msg keys and arguments.
*
* @since 2.5
*
* @param array $messages
* @param integer|null $type
* @param integer|null $language
*
* @return array
*/
public static function normalizeAndDecodeMessages( array $messages, $type = null, $language = null ) {
$normalizedMessages = [];
if ( $type === null ) {
$type = Message::TEXT;
}
if ( $language === null ) {
$language = Message::USER_LANGUAGE;
}
foreach ( $messages as $message ) {
if ( is_array( $message ) ) {
foreach ( self::normalizeAndDecodeMessages( $message ) as $msg ) {
if ( is_string( $msg ) ) {
$normalizedMessages[md5($msg)] = $msg;
} else {
$normalizedMessages[] = $msg;
}
}
continue;
}
$exists = false;
if ( is_string( $message ) && ( $decodedMessage = Message::decode( $message, $type, $language ) ) !== false ) {
$message = $decodedMessage;
$exists = true;
}
if ( !$exists && is_string( $message ) && wfMessage( $message )->exists() ) {
$message = Message::get( $message, $type, $language );
}
if ( is_string( $message ) ) {
$normalizedMessages[md5($message)] = $message;
} else {
$normalizedMessages[] = $message;
}
}
return array_values( $normalizedMessages );
}
/**
* @since 2.5
*
* @param array $messages
* @param integer|null $type
* @param integer|null $language
*
* @return string
*/
public static function getMessagesAsString( array $messages, $type = null, $language = null ) {
$normalizedMessages = self::normalizeAndDecodeMessages( $messages, $type, $language );
$msg = [];
foreach ( $normalizedMessages as $message ) {
if ( !is_string( $message ) ) {
continue;
}
$msg[] = $message;
}
return implode( ',', $msg );
}
/**
* @since 2.5
*
* @param SemanticData $semanticData
* @param DIContainer|null $container
*/
public function addToSemanticData( SemanticData $semanticData, DIContainer $container = null ) {
if ( $container === null ) {
return;
}
$semanticData->addPropertyObjectValue(
new DIProperty( '_ERRC' ),
$container
);
}
/**
* @since 2.5
*
* @param array|string $errorMsg
* @param DIProperty|null $property
*
* @return DIContainer
*/
public function newErrorContainerFromMsg( $error, DIProperty $property = null ) {
if ( $property !== null && $property->isInverse() ) {
$property = new DIProperty( $property->getKey() );
}
$error = Message::encode( $error );
$hash = $error;
if ( $property !== null ) {
$hash .= $property->getKey();
}
$containerSemanticData = $this->newContainerSemanticData( $hash );
$this->addToContainerSemanticData(
$containerSemanticData,
$property,
$error
);
return new DIContainer( $containerSemanticData );
}
/**
* @since 2.5
*
* @param DataValue $dataValue
*
* @return DIContainer|null
*/
public function newErrorContainerFromDataValue( DataValue $dataValue ) {
if ( $dataValue->getErrors() === [] ) {
return null;
}
$property = $dataValue->getProperty();
if ( $property !== null ) {
$hash = $property->getKey();
} else {
$hash = $dataValue->getDataItem()->getHash();
}
$containerSemanticData = $this->newContainerSemanticData( $hash );
foreach ( $dataValue->getErrors() as $error ) {
$this->addToContainerSemanticData( $containerSemanticData, $property, Message::encode( $error ) );
}
return new DIContainer( $containerSemanticData );
}
private function addToContainerSemanticData( $containerSemanticData, $property, $error ) {
if ( $property !== null ) {
$containerSemanticData->addPropertyObjectValue(
new DIProperty( '_ERRP' ),
new DIWikiPage( $property->getKey(), SMW_NS_PROPERTY )
);
}
$containerSemanticData->addPropertyObjectValue(
new DIProperty( '_ERRT' ),
new DIBlob( $error )
);
}
private function newContainerSemanticData( $hash ) {
if ( $this->subject === null ) {
$containerSemanticData = ContainerSemanticData::makeAnonymousContainer();
$containerSemanticData->skipAnonymousCheck();
} else {
$subobjectName = '_ERR' . md5( $hash );
$subject = new DIWikiPage(
$this->subject->getDBkey(),
$this->subject->getNamespace(),
$this->subject->getInterwiki(),
$subobjectName
);
$containerSemanticData = new ContainerSemanticData( $subject );
}
return $containerSemanticData;
}
}
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