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<?php
/*
* Created on May 13, 2007
*
* API for MediaWiki 1.8+
*
* Copyright (C) 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.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* http://www.gnu.org/copyleft/gpl.html
*/
if (!defined('MEDIAWIKI')) {
// Eclipse helper - will be ignored in production
require_once ("ApiQueryBase.php");
}
/**
* This query adds an <images> subelement to all pages with the list of images embedded into those pages.
*
* @ingroup API
*/
class ApiQueryImages extends ApiQueryGeneratorBase {
public function __construct($query, $moduleName) {
parent :: __construct($query, $moduleName, 'im');
}
public function execute() {
$this->run();
}
public function executeGenerator($resultPageSet) {
$this->run($resultPageSet);
}
private function run($resultPageSet = null) {
if ($this->getPageSet()->getGoodTitleCount() == 0)
return; // nothing to do
$params = $this->extractRequestParams();
$this->addFields(array (
'il_from',
'il_to'
));
$this->addTables('imagelinks');
$this->addWhereFld('il_from', array_keys($this->getPageSet()->getGoodTitles()));
if(!is_null($params['continue'])) {
$cont = explode('|', $params['continue']);
if(count($cont) != 2)
$this->dieUsage("Invalid continue param. You should pass the " .
"original value returned by the previous query", "_badcontinue");
$ilfrom = intval($cont[0]);
$ilto = $this->getDB()->strencode($this->titleToKey($cont[1]));
$this->addWhere("il_from > $ilfrom OR ".
"(il_from = $ilfrom AND ".
"il_to >= '$ilto')");
}
# Don't order by il_from if it's constant in the WHERE clause
if(count($this->getPageSet()->getGoodTitles()) == 1)
$this->addOption('ORDER BY', 'il_to');
else
$this->addOption('ORDER BY', 'il_from, il_to');
$this->addOption('LIMIT', $params['limit'] + 1);
$db = $this->getDB();
$res = $this->select(__METHOD__);
if (is_null($resultPageSet)) {
$data = array();
$lastId = 0; // database has no ID 0
$count = 0;
while ($row = $db->fetchObject($res)) {
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 .
'|' . $this->keyToTitle($row->il_to));
break;
}
if ($lastId != $row->il_from) {
if($lastId != 0) {
$this->addPageSubItems($lastId, $data);
$data = array();
}
$lastId = $row->il_from;
}
$vals = array();
ApiQueryBase :: addTitleInfo($vals, Title :: makeTitle(NS_FILE, $row->il_to));
$data[] = $vals;
}
if($lastId != 0) {
$this->addPageSubItems($lastId, $data);
}
} else {
$titles = array();
$count = 0;
while ($row = $db->fetchObject($res)) {
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 .
'|' . $this->keyToTitle($row->il_to));
break;
}
$titles[] = Title :: makeTitle(NS_FILE, $row->il_to);
}
$resultPageSet->populateFromTitles($titles);
}
$db->freeResult($res);
}
public function getAllowedParams() {
return array(
'limit' => array(
ApiBase :: PARAM_DFLT => 10,
ApiBase :: PARAM_TYPE => 'limit',
ApiBase :: PARAM_MIN => 1,
ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
),
'continue' => null,
);
}
public function getParamDescription () {
return array(
'limit' => 'How many images to return',
'continue' => 'When more results are available, use this to continue',
);
}
public function getDescription() {
return 'Returns all images contained on the given page(s)';
}
protected function getExamples() {
return array (
"Get a list of images used in the [[Main Page]]:",
" api.php?action=query&prop=images&titles=Main%20Page",
"Get information about all images used in the [[Main Page]]:",
" api.php?action=query&generator=images&titles=Main%20Page&prop=info"
);
}
public function getVersion() {
return __CLASS__ . ': $Id: ApiQueryImages.php 44121 2008-12-01 17:14:30Z vyznev $';
}
}
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