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<?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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
namespace MediaWiki\Interwiki;
use MediaWiki\Site\MediaWikiSite;
use MediaWiki\Site\Site;
use MediaWiki\Site\SiteLookup;
/**
* InterwikiLookupAdapter on top of SiteLookup
*
* @since 1.29
* @license GPL-2.0-or-later
*/
class InterwikiLookupAdapter implements InterwikiLookup {
/**
* @var SiteLookup
*/
private $siteLookup;
/**
* @var Interwiki[]|null associative array mapping interwiki prefixes to Interwiki objects
*/
private $interwikiMap;
public function __construct(
SiteLookup $siteLookup,
?array $interwikiMap = null
) {
$this->siteLookup = $siteLookup;
$this->interwikiMap = $interwikiMap;
}
/**
* See InterwikiLookup::isValidInterwiki
* It loads the whole interwiki map.
*
* @param string $prefix Interwiki prefix to use
* @return bool Whether it exists
*/
public function isValidInterwiki( $prefix ) {
return array_key_exists( $prefix, $this->getInterwikiMap() );
}
/**
* See InterwikiLookup::fetch
* It loads the whole interwiki map.
*
* @param string $prefix Interwiki prefix to use
* @return Interwiki|null|bool
*/
public function fetch( $prefix ) {
if ( $prefix == '' ) {
return null;
}
if ( !$this->isValidInterwiki( $prefix ) ) {
return false;
}
// @phan-suppress-next-line PhanTypeArraySuspiciousNullable
return $this->interwikiMap[$prefix];
}
/**
* See InterwikiLookup::getAllPrefixes
*
* @param bool|null $local If set, limits output to local/non-local interwikis
* @return array[] interwiki rows
*/
public function getAllPrefixes( $local = null ) {
$res = [];
foreach ( $this->getInterwikiMap() as $interwikiId => $interwiki ) {
if ( $local === null || $interwiki->isLocal() === $local ) {
$res[] = [
'iw_prefix' => $interwikiId,
'iw_url' => $interwiki->getURL(),
'iw_api' => $interwiki->getAPI(),
'iw_wikiid' => $interwiki->getWikiID(),
'iw_local' => $interwiki->isLocal(),
'iw_trans' => $interwiki->isTranscludable(),
];
}
}
return $res;
}
/**
* See InterwikiLookup::invalidateCache
*
* @param string $prefix
*/
public function invalidateCache( $prefix ) {
if ( !isset( $this->interwikiMap[$prefix] ) ) {
return;
}
$globalId = $this->interwikiMap[$prefix]->getWikiID();
unset( $this->interwikiMap[$prefix] );
// Reload the interwiki
$site = $this->siteLookup->getSites()->getSite( $globalId );
$interwikis = $this->getSiteInterwikis( $site );
$this->interwikiMap = array_merge( $this->interwikiMap, [ $interwikis[$prefix] ] );
}
/**
* Load interwiki map to use as cache
*/
private function loadInterwikiMap() {
$interwikiMap = [];
$siteList = $this->siteLookup->getSites();
foreach ( $siteList as $site ) {
$interwikis = $this->getSiteInterwikis( $site );
$interwikiMap = array_merge( $interwikiMap, $interwikis );
}
$this->interwikiMap = $interwikiMap;
}
/**
* Get interwikiMap attribute, load if needed.
*
* @return Interwiki[]
*/
private function getInterwikiMap() {
if ( $this->interwikiMap === null ) {
$this->loadInterwikiMap();
}
return $this->interwikiMap;
}
/**
* Load interwikis for the given site
*
* @param Site $site
* @return Interwiki[]
*/
private function getSiteInterwikis( Site $site ) {
$url = $site->getPageUrl();
if ( $site instanceof MediaWikiSite ) {
$path = $site->getFileUrl( 'api.php' );
} else {
$path = '';
}
$local = $site->getSource() === 'local';
$interwikis = [];
foreach ( $site->getInterwikiIds() as $interwiki ) {
// TODO: How to adapt trans?
$interwikis[$interwiki] = new Interwiki(
$interwiki,
$url,
$path,
$site->getGlobalId(),
$local
);
}
return $interwikis;
}
}