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<?php
namespace SMW\Query;
use SMWQuery as Query;
/**
* @license GNU GPL v2+
* @since 2.5
*
* @author mwjames
*/
class QueryStringifier {
/**
* @since 2.5
*
* @param Query $query
*
* @return string
*/
public static function rawUrlEncode( Query $query ) {
return rawurlencode( self::toString( $query ) );
}
/**
* @since 3.0
*
* @param Query $query
* @param boolean $printParameters
*
* @return string
*/
public static function toArray( Query $query, $printParameters = false ) {
$serialized = [];
$serialized['conditions'] = $query->getQueryString();
$serialized['parameters'] = [
'limit' => $query->getLimit(),
'offset' => $query->getOffset(),
'mainlabel' => $query->getMainlabel()
];
if ( $query->getQuerySource() !== null && $query->getQuerySource() !== '' ) {
$serialized['parameters']['source'] = $query->getQuerySource();
}
list( $serialized['sort'], $serialized['order'] ) = self::sortKeys(
$query
);
if ( $serialized['sort'] !== [] ) {
$serialized['parameters']['sort'] = implode( ',', $serialized['sort'] );
}
if ( $serialized['order'] !== [] ) {
$serialized['parameters']['order'] = implode( ',', $serialized['order'] );
}
unset( $serialized['sort'] );
unset( $serialized['order'] );
$serialized['printouts'] = self::printouts(
$query,
$printParameters
);
return $serialized;
}
/**
* @since 2.5
*
* @param Query $query
*
* @return string
*/
public static function toJson( Query $query, $printParameters = false ) {
return json_encode( self::toArray( $query, $printParameters ) );
}
/**
* @since 2.5
*
* @param Query $query
*
* @return string
*/
public static function toString( Query $query, $printParameters = false ) {
$serialized = self::toArray( $query, $printParameters );
$string = $serialized['conditions'];
if ( $serialized['printouts'] !== [] ) {
$string .= '|' . implode( '|', $serialized['printouts'] );
}
foreach ( $serialized['parameters'] as $key => $value ) {
$string .= "|$key=$value";
}
return $string;
}
private static function printouts( $query, $showParams = false ) {
$printouts = [];
if ( $query->getExtraPrintouts() === null ) {
return $printouts;
}
foreach ( $query->getExtraPrintouts() as $printout ) {
if ( ( $serialisation = $printout->getSerialisation( $showParams ) ) !== '' ) {
$printouts[] = $serialisation;
}
}
return $printouts;
}
private static function sortKeys( $query ) {
$sort = [];
$order = [];
if ( $query->getSortKeys() === null ) {
return [ $sort, $order ];
}
foreach ( $query->getSortKeys() as $key => $value ) {
if ( $key === '' ) {
continue;
}
$sort[] = str_replace( '_', ' ', $key );
$order[] = strtolower( $value );
}
return [ $sort, $order ];
}
}
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