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<?php
namespace MediaWiki\Search;
use Category;
use ParserOutput;
use Title;
/**
* Extracts data from ParserOutput for indexing in the search engine.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @since 1.28
*/
class ParserOutputSearchDataExtractor {
/**
* Get a list of categories, as an array with title text strings.
*
* @param ParserOutput $parserOutput
* @return string[]
*/
public function getCategories( ParserOutput $parserOutput ) {
$categories = [];
foreach ( $parserOutput->getCategoryLinks() as $key ) {
$categories[] = Category::newFromName( $key )->getTitle()->getText();
}
return $categories;
}
/**
* Get a list of external links from ParserOutput, as an array of strings.
*
* @param ParserOutput $parserOutput
* @return string[]
*/
public function getExternalLinks( ParserOutput $parserOutput ) {
return array_keys( $parserOutput->getExternalLinks() );
}
/**
* Get a list of outgoing wiki links (including interwiki links), as
* an array of prefixed title strings.
*
* @param ParserOutput $parserOutput
* @return string[]
*/
public function getOutgoingLinks( ParserOutput $parserOutput ) {
$outgoingLinks = [];
foreach ( $parserOutput->getLinks() as $linkedNamespace => $namespaceLinks ) {
foreach ( array_keys( $namespaceLinks ) as $linkedDbKey ) {
$outgoingLinks[] =
Title::makeTitle( $linkedNamespace, $linkedDbKey )->getPrefixedDBkey();
}
}
return $outgoingLinks;
}
/**
* Get a list of templates used in the ParserOutput content, as prefixed title strings
*
* @param ParserOutput $parserOutput
* @return string[]
*/
public function getTemplates( ParserOutput $parserOutput ) {
$templates = [];
foreach ( $parserOutput->getTemplates() as $tNS => $templatesInNS ) {
foreach ( array_keys( $templatesInNS ) as $tDbKey ) {
$templateTitle = Title::makeTitle( $tNS, $tDbKey );
$templates[] = $templateTitle->getPrefixedText();
}
}
return $templates;
}
}
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