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<?php
/*
* Created on Sep 27, 2008
*
* API for MediaWiki 1.8+
*
* Copyright (C) 2008 Roan Kattow <Firstname>,<Lastname>@home.nl
*
* 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");
}
/**
* A query module to list duplicates of the given file(s)
*
* @ingroup API
*/
class ApiQueryDuplicateFiles extends ApiQueryGeneratorBase {
public function __construct($query, $moduleName) {
parent :: __construct($query, $moduleName, 'df');
}
public function execute() {
$this->run();
}
public function executeGenerator($resultPageSet) {
$this->run($resultPageSet);
}
private function run($resultPageSet = null) {
$params = $this->extractRequestParams();
$namespaces = $this->getPageSet()->getAllTitlesByNamespace();
if ( empty( $namespaces[NS_FILE] ) ) {
return;
}
$images = $namespaces[NS_FILE];
$this->addTables('image', 'i1');
$this->addTables('image', 'i2');
$this->addFields(array(
'i1.img_name AS orig_name',
'i2.img_name AS dup_name',
'i2.img_user_text AS dup_user_text',
'i2.img_timestamp AS dup_timestamp'
));
$this->addWhere(array(
'i1.img_name' => array_keys($images),
'i1.img_sha1 = i2.img_sha1',
'i1.img_name != i2.img_name',
));
if(isset($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");
$orig = $this->getDB()->strencode($this->titleTokey($cont[0]));
$dup = $this->getDB()->strencode($this->titleToKey($cont[1]));
$this->addWhere("i1.img_name > '$orig' OR ".
"(i1.img_name = '$orig' AND ".
"i2.img_name >= '$dup')");
}
$this->addOption('ORDER BY', 'i1.img_name');
$this->addOption('LIMIT', $params['limit'] + 1);
$res = $this->select(__METHOD__);
$db = $this->getDB();
$count = 0;
$data = array();
$titles = array();
$lastName = '';
while($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',
$this->keyToTitle($row->orig_name) . '|' .
$this->keyToTitle($row->dup_name));
break;
}
if(!is_null($resultPageSet))
$titles[] = Title::makeTitle(NS_FILE, $row->dup_name);
else
{
if($row->orig_name != $lastName)
{
if($lastName != '')
{
$this->addPageSubItems($images[$lastName], $data);
$data = array();
}
$lastName = $row->orig_name;
}
$data[] = array(
'name' => $row->dup_name,
'user' => $row->dup_user_text,
'timestamp' => wfTimestamp(TS_ISO_8601, $row->dup_timestamp)
);
}
}
if(!is_null($resultPageSet))
$resultPageSet->populateFromTitles($titles);
else if($lastName != '')
$this->addPageSubItems($images[$lastName], $data);
$db->freeResult($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 files to return',
'continue' => 'When more results are available, use this to continue',
);
}
public function getDescription() {
return 'List all files that are duplicates of the given file(s).';
}
protected function getExamples() {
return array ( 'api.php?action=query&titles=Image:Albert_Einstein_Head.jpg&prop=duplicatefiles',
'api.php?action=query&generator=allimages&prop=duplicatefiles',
);
}
public function getVersion() {
return __CLASS__ . ': $Id: ApiQueryDuplicateFiles.php 44121 2008-12-01 17:14:30Z vyznev $';
}
}
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