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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");
}
/**
* A query module to list all langlinks (links to correspanding foreign language pages).
*
* @ingroup API
*/
class ApiQueryLangLinks extends ApiQueryBase {
public function __construct($query, $moduleName) {
parent :: __construct($query, $moduleName, 'll');
}
public function execute() {
if ( $this->getPageSet()->getGoodTitleCount() == 0 )
return;
$params = $this->extractRequestParams();
$this->addFields(array (
'll_from',
'll_lang',
'll_title'
));
$this->addTables('langlinks');
$this->addWhereFld('ll_from', array_keys($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");
$llfrom = intval($cont[0]);
$lllang = $this->getDb()->strencode($cont[1]);
$this->addWhere("ll_from > $llfrom OR ".
"(ll_from = $llfrom AND ".
"ll_lang >= '$lllang')");
}
# Don't order by ll_from if it's constant in the WHERE clause
if(count($this->getPageSet()->getGoodTitles()) == 1)
$this->addOption('ORDER BY', 'll_lang');
else
$this->addOption('ORDER BY', 'll_from, ll_lang');
$this->addOption('LIMIT', $params['limit'] + 1);
$res = $this->select(__METHOD__);
$data = array();
$lastId = 0; // database has no ID 0
$count = 0;
$db = $this->getDB();
while ($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->ll_from}|{$row->ll_lang}");
break;
}
if ($lastId != $row->ll_from) {
if($lastId != 0) {
$this->addPageSubItems($lastId, $data);
$data = array();
}
$lastId = $row->ll_from;
}
$entry = array('lang' => $row->ll_lang);
ApiResult :: setContent($entry, $row->ll_title);
$data[] = $entry;
}
if($lastId != 0) {
$this->addPageSubItems($lastId, $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 langlinks to return',
'continue' => 'When more results are available, use this to continue',
);
}
public function getDescription() {
return 'Returns all interlanguage links from the given page(s)';
}
protected function getExamples() {
return array (
"Get interlanguage links from the [[Main Page]]:",
" api.php?action=query&prop=langlinks&titles=Main%20Page&redirects",
);
}
public function getVersion() {
return __CLASS__ . ': $Id: ApiQueryLangLinks.php 37534 2008-07-10 21:08:37Z brion $';
}
}
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