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<?php
namespace SMW\Query\Processor;
use SMW\Query\PrintRequestFactory;
/**
* @private
*
* @license GNU GPL v2+
* @since 3.0
*
* @author mwjames
*/
class ParamListProcessor {
/**
* Format type
*/
const FORMAT_LEGACY = 'format.legacy';
/**
* Identify the PrintThis instance
*/
const PRINT_THIS = 'print.this';
/**
* @var PrintRequestFactory
*/
private $printRequestFactory;
/**
* @since 3.0
*
* @param PrintRequestFactory|null $printRequestFactory
*/
public function __construct( PrintRequestFactory $printRequestFactory = null ) {
$this->printRequestFactory = $printRequestFactory;
if ( $this->printRequestFactory === null ) {
$this->printRequestFactory = new PrintRequestFactory();
}
}
/**
* @since 3.0
*
* @param array $paramList
* @param string $type
*
* @return array
*/
public function format( array $paramList, $type ) {
if ( $type === self::FORMAT_LEGACY ) {
return $this->legacy_format( $paramList );
}
return $paramList;
}
/**
* @since 3.0
*
* @param array $parameters
* @param boolean $showMode
*
* @return array
*/
public function preprocess( array $parameters, $showMode = false ) {
$previousPrintout = null;
$serialization = [
'showMode' => $showMode,
'templateArgs' => false,
'query' => '',
'this' => [],
'printouts' => [],
'parameters' => []
];
foreach ( $parameters as $name => $param ) {
// special handling for arrays - this can happen if the
// parameter came from a checkboxes input in Special:Ask:
if ( is_array( $param ) ) {
$param = implode( ',', array_keys( $param ) );
}
$param = $this->encodeEq( $param );
// #1258 (named_args -> named args)
// accept 'name' => 'value' just as '' => 'name=value':
if ( is_string( $name ) && ( $name !== '' ) ) {
$param = str_replace( "_", " ", $name ) . '=' . $param;
}
// Find out whether this is a mainlabel, and if so store related
// parameters separate since QueryProcessor::addThisPrintout is
// added in isolation !!??!!
// $isMainlabel = strpos( $param, 'mainlabel=' ) !== false;
// mainlable=Foo |+with=200 ... is currently not support
// use
// |?=Foo |+width=200 ...
// |mainlabel=-
$isMainlabel = false;
if ( $param === '' ) {
} elseif ( $isMainlabel ) {
$this->addThisPrintRequest( $name, $param, $previousPrintout, $serialization );
} elseif ( $param[0] == '?' ) {
$this->addPrintRequest( $name, $param, $previousPrintout, $serialization );
} elseif ( $param[0] == '+' ) {
$this->addPrintRequestParameter( $name, $param, $previousPrintout, $serialization );
} else {
$this->addOtherParameters( $name, $param, $serialization, $showMode );
}
}
$serialization['query'] = str_replace(
[ '<', '>', '0x003D' ],
['<', '>', '=' ],
$serialization['query']
);
if ( $showMode ) {
$serialization['query'] = '[[:' . $serialization['query'] . ']]';
}
return $serialization;
}
private function legacy_format( array $paramList ) {
$printouts = [];
foreach ( $paramList['printouts'] as $k => $request ) {
if ( !isset( $request['label'] ) ) {
continue;
}
// #502
// In case of template arguments suppress the showMode to allow for
// labels to be generated and to be transfered to the invoked template
// otherwise labels will be empty and not be accessible in a template
$showMode = $paramList['templateArgs'] ? false : $paramList['showMode'];
$printRequest = $this->printRequestFactory->newFromText(
$request['label'],
$showMode
);
if ( $printRequest === null ) {
continue;
}
foreach ( $request['params'] as $key => $value ) {
$printRequest->setParameter( $key, $value );
}
$printouts[] = $printRequest;
}
return [
$paramList['query'],
$paramList['parameters'],
$printouts
];
}
private function encodeEq ( $param ) {
// Bug 32955 / #640
// Modify (e.g. replace `=`) a condition string only if enclosed by
// [[ ... ]]
//
// #3560
// Instead of `-3D` as temporary replacement, use the UTF representation
// to decode the `=` sign and eliminate possible collisions with a search
// request that contains `-3D` string
return preg_replace_callback(
'/\[\[([^\[\]]*)\]\]/xu',
function( array $matches ) {
return str_replace( [ '=' ], [ '0x003D' ], $matches[0] );
},
$param
);
}
private function addPrintRequest( $name, $param, &$previousPrintout, array &$serialization ) {
$param = substr( $param, 1 );
// Currently we don't filter any duplicates hence the additional
// $name is added to distinguish printouts with the same configuration
$hash = md5( json_encode( $param ) . $name );
$previousPrintout = $hash;
$serialization['printouts'][$hash] = [
'label' => $param,
'params' => []
];
}
private function addThisPrintRequest( $name, $param, &$previousPrintout, array &$serialization ) {
$param = substr( $param, 1 );
$parts = explode( '=', $param, 2 );
$serialization['parameters']['mainlabel'] = count( $parts ) >= 2 ? $parts[1] : null;
$previousPrintout = self::PRINT_THIS;
}
private function addPrintRequestParameter( $name, $param, $previousPrintout, array &$serialization ) {
if ( $previousPrintout === null ) {
return;
}
$param = substr( $param, 1 );
$parts = explode( '=', $param, 2 );
if ( $previousPrintout === self::PRINT_THIS ) {
if ( count( $parts ) == 2 ) {
$serialization['this'] = [ trim( $parts[0] ) => $parts[1] ];
} else {
$serialization['this'] = [ trim( $parts[0] ) => null ];
}
} else {
if ( count( $parts ) == 2 ) {
$serialization['printouts'][$previousPrintout]['params'][trim( $parts[0] )] = $parts[1];
} else {
$serialization['printouts'][$previousPrintout]['params'][trim( $parts[0] )] = null;
}
}
}
private function addOtherParameters( $name, $param, array &$serialization, $showMode ) {
// #1645
$parts = $showMode && $name == 0 ? $param : explode( '=', $param, 2 );
if ( is_array( $parts ) && count( $parts ) >= 2 ) {
$p = strtolower( trim( $parts[0] ) );
if ( $p === 'template' ) {
$serialization['templateArgs'] = true;
}
// Don't trim here, some parameters care for " "
//
// #3196
// Ensure to decode `0x003D` from encodeEq to support things like
// `|intro=[[File:Foo.png|link=Bar]]`
$serialization['parameters'][$p] = str_replace( [ '0x003D' ], [ '=' ], $parts[1] );
} else {
$serialization['query'] .= $param;
}
}
}
|
