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<?php
namespace SMW\Elastic\QueryEngine;
use SMW\DIWikiPage;
/**
* @license GNU GPL v2+
* @since 3.0
*
* @author mwjames
*/
class Excerpts extends \SMW\Query\Excerpts {
/**
* @since 3.0
*
* @param DIWikiPage|string $hash
*
* @return string|integer|false
*/
public function getExcerpt( $hash ) {
if ( $hash instanceof DIWikiPage ) {
$hash = $hash->getHash();
}
foreach ( $this->excerpts as $map ) {
if ( $map[0] === $hash ) {
return $this->format( $map[1] );
}
}
return false;
}
/**
* @since 3.0
*
* @return boolean
*/
public function hasHighlight() {
return $this->noHighlight ? false : true;
}
private function format( $v ) {
// https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-highlighting.html
// By default, highlighted text is wrapped in <em> and </em> tags
$text = '';
if ( is_array( $v ) ) {
foreach ( $v as $key => $value ) {
$text .= implode( ' ', $value ) ;
}
} else {
$text = $v;
}
if ( $this->stripTags ) {
$text = str_replace(
[ '<em>', '</em>' ],
[ '<em>', '</em>' ],
$text
);
// Remove tags to avoid any output disruption
$text = strip_tags( $text );
$text = str_replace(
[ '<em>', '</em>' ],
[ '<em>', '</em>' ],
$text
);
}
if ( $this->noHighlight ) {
$text = str_replace( [ '<em>', '</em>', "\n" ], [ '', '', ' ' ], $text );
}
return $text;
}
}
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