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<?php
/*
* Created on Mar 16, 2008
*
* API for MediaWiki 1.12+
*
* Copyright (C) 2008 Vasiliev Victor vasilvv@gmail.com,
* based on ApiQueryAllpages.php
*
* 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');
}
/**
* Query module to enumerate all available pages.
*
* @ingroup API
*/
class ApiQueryAllimages extends ApiQueryGeneratorBase {
public function __construct($query, $moduleName) {
parent :: __construct($query, $moduleName, 'ai');
}
public function execute() {
$this->run();
}
public function executeGenerator($resultPageSet) {
if ($resultPageSet->isResolvingRedirects())
$this->dieUsage('Use "gaifilterredir=nonredirects" option instead of "redirects" when using allimages as a generator', 'params');
$this->run($resultPageSet);
}
private function run($resultPageSet = null) {
$repo = RepoGroup::singleton()->getLocalRepo();
if ( !$repo instanceof LocalRepo )
$this->dieUsage('Local file repository does not support querying all images', 'unsupportedrepo');
$db = $this->getDB();
$params = $this->extractRequestParams();
// Image filters
$dir = ($params['dir'] == 'descending' ? 'older' : 'newer');
$from = (is_null($params['from']) ? null : $this->titlePartToKey($params['from']));
$this->addWhereRange('img_name', $dir, $from, null);
if (isset ($params['prefix']))
$this->addWhere("img_name LIKE '" . $db->escapeLike($this->titlePartToKey($params['prefix'])) . "%'");
if (isset ($params['minsize'])) {
$this->addWhere('img_size>=' . intval($params['minsize']));
}
if (isset ($params['maxsize'])) {
$this->addWhere('img_size<=' . intval($params['maxsize']));
}
$sha1 = false;
if( isset( $params['sha1'] ) ) {
$sha1 = wfBaseConvert( $params['sha1'], 16, 36, 31 );
} elseif( isset( $params['sha1base36'] ) ) {
$sha1 = $params['sha1base36'];
}
if( $sha1 ) {
$this->addWhere( 'img_sha1=' . $db->addQuotes( $sha1 ) );
}
$this->addTables('image');
$prop = array_flip($params['prop']);
$this->addFields( LocalFile::selectFields() );
$limit = $params['limit'];
$this->addOption('LIMIT', $limit+1);
$this->addOption('ORDER BY', 'img_name' .
($params['dir'] == 'descending' ? ' DESC' : ''));
$res = $this->select(__METHOD__);
$titles = array();
$count = 0;
$result = $this->getResult();
while ($row = $db->fetchObject($res)) {
if (++ $count > $limit) {
// We've reached the one extra which shows that there are additional pages to be had. Stop here...
// TODO: Security issue - if the user has no right to view next title, it will still be shown
$this->setContinueEnumParameter('from', $this->keyToTitle($row->img_name));
break;
}
if (is_null($resultPageSet)) {
$file = $repo->newFileFromRow( $row );
$info = array_merge(array('name' => $row->img_name),
ApiQueryImageInfo::getInfo($file, $prop, $result));
$fit = $result->addValue(array('query', $this->getModuleName()), null, $info);
if( !$fit ) {
$this->setContinueEnumParameter('from', $this->keyToTitle($row->img_name));
break;
}
} else {
$titles[] = Title::makeTitle(NS_IMAGE, $row->img_name);
}
}
$db->freeResult($res);
if (is_null($resultPageSet)) {
$result->setIndexedTagName_internal(array('query', $this->getModuleName()), 'img');
} else {
$resultPageSet->populateFromTitles($titles);
}
}
public function getAllowedParams() {
return array (
'from' => null,
'prefix' => null,
'minsize' => array (
ApiBase :: PARAM_TYPE => 'integer',
),
'maxsize' => array (
ApiBase :: PARAM_TYPE => 'integer',
),
'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
),
'dir' => array (
ApiBase :: PARAM_DFLT => 'ascending',
ApiBase :: PARAM_TYPE => array (
'ascending',
'descending'
)
),
'sha1' => null,
'sha1base36' => null,
'prop' => array (
ApiBase :: PARAM_TYPE => array(
'timestamp',
'user',
'comment',
'url',
'size',
'dimensions', // Obsolete
'mime',
'sha1',
'metadata',
'bitdepth',
),
ApiBase :: PARAM_DFLT => 'timestamp|url',
ApiBase :: PARAM_ISMULTI => true
)
);
}
public function getParamDescription() {
return array (
'from' => 'The image title to start enumerating from.',
'prefix' => 'Search for all image titles that begin with this value.',
'dir' => 'The direction in which to list',
'minsize' => 'Limit to images with at least this many bytes',
'maxsize' => 'Limit to images with at most this many bytes',
'limit' => 'How many total images to return.',
'sha1' => 'SHA1 hash of image',
'sha1base36' => 'SHA1 hash of image in base 36 (used in MediaWiki)',
'prop' => 'Which properties to get',
);
}
public function getDescription() {
return 'Enumerate all images sequentially';
}
protected function getExamples() {
return array (
'Simple Use',
' Show a list of images starting at the letter "B"',
' api.php?action=query&list=allimages&aifrom=B',
'Using as Generator',
' Show info about 4 images starting at the letter "T"',
' api.php?action=query&generator=allimages&gailimit=4&gaifrom=T&prop=imageinfo',
);
}
public function getVersion() {
return __CLASS__ . ': $Id: ApiQueryAllimages.php 46845 2009-02-05 14:30:59Z catrope $';
}
}
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