includes/api/ApiQueryImages.php
<?php
/**
* Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
*
* 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
*
* @file
*/
namespace MediaWiki\Api;
use MediaWiki\Title\Title;
use Wikimedia\ParamValidator\ParamValidator;
use Wikimedia\ParamValidator\TypeDef\IntegerDef;
/**
* This query adds an "<images>" subelement to all pages with the list of
* images embedded into those pages.
*
* @ingroup API
*/
class ApiQueryImages extends ApiQueryGeneratorBase {
/**
* @param ApiQuery $query
* @param string $moduleName
*/
public function __construct( ApiQuery $query, $moduleName ) {
parent::__construct( $query, $moduleName, 'im' );
}
public function execute() {
$this->run();
}
public function executeGenerator( $resultPageSet ) {
$this->run( $resultPageSet );
}
/**
* @param ApiPageSet|null $resultPageSet
*/
private function run( $resultPageSet = null ) {
$pages = $this->getPageSet()->getGoodPages();
if ( $pages === [] ) {
return; // nothing to do
}
$params = $this->extractRequestParams();
$this->addFields( [
'il_from',
'il_to'
] );
$this->addTables( 'imagelinks' );
$this->addWhereFld( 'il_from', array_keys( $pages ) );
if ( $params['continue'] !== null ) {
$db = $this->getDB();
$cont = $this->parseContinueParamOrDie( $params['continue'], [ 'int', 'string' ] );
$op = $params['dir'] == 'descending' ? '<=' : '>=';
$this->addWhere( $db->buildComparison( $op, [
'il_from' => $cont[0],
'il_to' => $cont[1],
] ) );
}
$sort = ( $params['dir'] == 'descending' ? ' DESC' : '' );
// Don't order by il_from if it's constant in the WHERE clause
if ( count( $pages ) === 1 ) {
$this->addOption( 'ORDER BY', 'il_to' . $sort );
} else {
$this->addOption( 'ORDER BY', [
'il_from' . $sort,
'il_to' . $sort
] );
}
$this->addOption( 'LIMIT', $params['limit'] + 1 );
if ( $params['images'] ) {
$images = [];
foreach ( $params['images'] as $img ) {
$title = Title::newFromText( $img );
if ( !$title || $title->getNamespace() !== NS_FILE ) {
$this->addWarning( [ 'apiwarn-notfile', wfEscapeWikiText( $img ) ] );
} else {
$images[] = $title->getDBkey();
}
}
if ( !$images ) {
// No titles so no results
return;
}
$this->addWhereFld( 'il_to', $images );
}
$res = $this->select( __METHOD__ );
if ( $resultPageSet === null ) {
$count = 0;
foreach ( $res as $row ) {
if ( ++$count > $params['limit'] ) {
// We've reached the one extra which shows that
// there are additional pages to be had. Stop here...
$this->setContinueEnumParameter( 'continue', $row->il_from . '|' . $row->il_to );
break;
}
$vals = [];
ApiQueryBase::addTitleInfo( $vals, Title::makeTitle( NS_FILE, $row->il_to ) );
$fit = $this->addPageSubItem( $row->il_from, $vals );
if ( !$fit ) {
$this->setContinueEnumParameter( 'continue', $row->il_from . '|' . $row->il_to );
break;
}
}
} else {
$titles = [];
$count = 0;
foreach ( $res as $row ) {
if ( ++$count > $params['limit'] ) {
// We've reached the one extra which shows that
// there are additional pages to be had. Stop here...
$this->setContinueEnumParameter( 'continue', $row->il_from . '|' . $row->il_to );
break;
}
$titles[] = Title::makeTitle( NS_FILE, $row->il_to );
}
$resultPageSet->populateFromTitles( $titles );
}
}
public function getCacheMode( $params ) {
return 'public';
}
public function getAllowedParams() {
return [
'limit' => [
ParamValidator::PARAM_DEFAULT => 10,
ParamValidator::PARAM_TYPE => 'limit',
IntegerDef::PARAM_MIN => 1,
IntegerDef::PARAM_MAX => ApiBase::LIMIT_BIG1,
IntegerDef::PARAM_MAX2 => ApiBase::LIMIT_BIG2
],
'continue' => [
ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
],
'images' => [
ParamValidator::PARAM_ISMULTI => true,
],
'dir' => [
ParamValidator::PARAM_DEFAULT => 'ascending',
ParamValidator::PARAM_TYPE => [
'ascending',
'descending'
]
],
];
}
protected function getExamplesMessages() {
$title = Title::newMainPage()->getPrefixedText();
$mp = rawurlencode( $title );
return [
"action=query&prop=images&titles={$mp}"
=> 'apihelp-query+images-example-simple',
"action=query&generator=images&titles={$mp}&prop=info"
=> 'apihelp-query+images-example-generator',
];
}
public function getHelpUrls() {
return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Images';
}
}
/** @deprecated class alias since 1.43 */
class_alias( ApiQueryImages::class, 'ApiQueryImages' );