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<?php
namespace SMW\DataValues\ValueParsers;
use SMW\DataValues\AllowsPatternValue;
use SMW\MediaWiki\MediaWikiNsContentReader;
/**
* @private
*
* @license GNU GPL v2+
* @since 2.4
*
* @author mwjames
*/
class AllowsPatternValueParser implements ValueParser {
/**
* @var MediaWikiNsContentReader
*/
private $mediaWikiNsContentReader;
/**
* @var array
*/
private $errors = [];
/**
* @since 2.4
*
* @param MediaWikiNsContentReader $mediaWikiNsContentReader
*/
public function __construct( MediaWikiNsContentReader $mediaWikiNsContentReader ) {
$this->mediaWikiNsContentReader = $mediaWikiNsContentReader;
}
/**
* @since 2.4
*
* @return array
*/
public function getErrors() {
return $this->errors;
}
/**
* @since 2.4
*
* @param string $userValue
*
* @return string|false
*/
public function parse( $userValue ) {
$this->errors = [];
$contentList = $this->doParseContent(
$this->mediaWikiNsContentReader->read( AllowsPatternValue::REFERENCE_PAGE_ID )
);
if ( !isset( $contentList[$userValue] ) ) {
return false;
}
return $contentList[$userValue];
}
private function doParseContent( $contents ) {
$list = [];
if ( $contents === '' ) {
return null;
}
$parts = array_map( 'trim', preg_split( "([\n][\s]?)", $contents ) );
// Get definition from first line
array_shift( $parts );
foreach ( $parts as $part ) {
if ( strpos( $part, '|' ) === false ) {
continue;
}
list( $reference, $regex ) = explode( '|', $part, 2 );
$list[trim( $reference )] = $regex;
}
return $list;
}
}
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