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<?php
/*
* Created on July 7, 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');
}
/**
* @addtogroup API
*/
class ApiQueryExtLinksUsage extends ApiQueryGeneratorBase {
public function __construct($query, $moduleName) {
parent :: __construct($query, $moduleName, 'eu');
}
public function execute() {
$this->run();
}
public function executeGenerator($resultPageSet) {
$this->run($resultPageSet);
}
private function run($resultPageSet = null) {
$params = $this->extractRequestParams();
$protocol = $params['protocol'];
$query = $params['query'];
if (is_null($query))
$this->dieUsage('Missing required query parameter', 'params');
// Find the right prefix
global $wgUrlProtocols;
foreach ($wgUrlProtocols as $p) {
if( substr( $p, 0, strlen( $protocol ) ) === $protocol ) {
$protocol = $p;
break;
}
}
$likeQuery = LinkFilter::makeLike($query , $protocol);
if (!$likeQuery)
$this->dieUsage('Invalid query', 'bad_query');
$likeQuery = substr($likeQuery, 0, strpos($likeQuery,'%')+1);
$this->addTables(array('page','externallinks')); // must be in this order for 'USE INDEX'
$this->addOption('USE INDEX', 'el_index');
$db = $this->getDB();
$this->addWhere('page_id=el_from');
$this->addWhere('el_index LIKE ' . $db->addQuotes( $likeQuery ));
$this->addWhereFld('page_namespace', $params['namespace']);
$prop = array_flip($params['prop']);
$fld_ids = isset($prop['ids']);
$fld_title = isset($prop['title']);
$fld_url = isset($prop['url']);
if (is_null($resultPageSet)) {
$this->addFields(array (
'page_id',
'page_namespace',
'page_title'
));
$this->addFieldsIf('el_to', $fld_url);
} else {
$this->addFields($resultPageSet->getPageTableFields());
}
$limit = $params['limit'];
$offset = $params['offset'];
$this->addOption('LIMIT', $limit +1);
if (isset ($offset))
$this->addOption('OFFSET', $offset);
$res = $this->select(__METHOD__);
$data = array ();
$count = 0;
while ($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...
$this->setContinueEnumParameter('offset', $offset+$limit+1);
break;
}
if (is_null($resultPageSet)) {
$vals = array();
if ($fld_ids)
$vals['pageid'] = intval($row->page_id);
if ($fld_title) {
$title = Title :: makeTitle($row->page_namespace, $row->page_title);
$vals['ns'] = intval($title->getNamespace());
$vals['title'] = $title->getPrefixedText();
}
if ($fld_url)
$vals['url'] = $row->el_to;
$data[] = $vals;
} else {
$resultPageSet->processDbRow($row);
}
}
$db->freeResult($res);
if (is_null($resultPageSet)) {
$result = $this->getResult();
$result->setIndexedTagName($data, $this->getModulePrefix());
$result->addValue('query', $this->getModuleName(), $data);
}
}
protected function getAllowedParams() {
global $wgUrlProtocols;
$protocols = array();
foreach ($wgUrlProtocols as $p) {
$protocols[] = substr($p, 0, strpos($p,':'));
}
return array (
'prop' => array (
ApiBase :: PARAM_ISMULTI => true,
ApiBase :: PARAM_DFLT => 'ids|title|url',
ApiBase :: PARAM_TYPE => array (
'ids',
'title',
'url'
)
),
'offset' => array (
ApiBase :: PARAM_TYPE => 'integer'
),
'protocol' => array (
ApiBase :: PARAM_TYPE => $protocols,
ApiBase :: PARAM_DFLT => 'http',
),
'query' => null,
'namespace' => array (
ApiBase :: PARAM_ISMULTI => true,
ApiBase :: PARAM_TYPE => 'namespace'
),
'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
)
);
}
protected function getParamDescription() {
return array (
'prop' => 'What pieces of information to include',
'offset' => 'Used for paging. Use the value returned for "continue"',
'protocol' => 'Protocol of the url',
'query' => 'Search string without protocol. See [[Special:LinkSearch]]',
'namespace' => 'The page namespace(s) to enumerate.',
'limit' => 'How many entries to return.'
);
}
protected function getDescription() {
return 'Enumerate pages that contain a given URL';
}
protected function getExamples() {
return array (
'api.php?action=query&list=exturlusage&euquery=www.mediawiki.org'
);
}
public function getVersion() {
return __CLASS__ . ': $Id: ApiQueryExtLinksUsage.php 24694 2007-08-09 08:41:58Z yurik $';
}
}
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