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MediaHandlerFactory.php
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MediaHandlerFactory.php
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<?php
/**
* Media-handling base classes and generic functionality.
*
* 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
* @ingroup Media
*/
use Psr\Log\LoggerInterface;
/**
* Class to construct MediaHandler objects
*
* @since 1.28
*/
class MediaHandlerFactory {
/**
* Default, MediaWiki core media handlers
*/
private const CORE_HANDLERS = [
'image/jpeg' => JpegHandler::class,
'image/png' => PNGHandler::class,
'image/gif' => GIFHandler::class,
'image/tiff' => TiffHandler::class,
'image/webp' => WebPHandler::class,
'image/x-ms-bmp' => BmpHandler::class,
'image/x-bmp' => BmpHandler::class,
'image/x-xcf' => XCFHandler::class,
'image/svg+xml' => SvgHandler::class, // official
'image/svg' => SvgHandler::class, // compat
'image/vnd.djvu' => DjVuHandler::class, // official
'image/x.djvu' => DjVuHandler::class, // compat
'image/x-djvu' => DjVuHandler::class, // compat
'image/jp2' => Jpeg2000Handler::class,
'image/jpx' => Jpeg2000Handler::class,
];
/** @var LoggerInterface */
private $logger;
/** @var array */
private $registry;
/**
* Instance cache of MediaHandler objects by mimetype
*
* @var MediaHandler[]
*/
private $handlers;
/**
* @param LoggerInterface $logger
* @param array $registry
*/
public function __construct(
LoggerInterface $logger,
array $registry
) {
$this->logger = $logger;
$this->registry = $registry + self::CORE_HANDLERS;
}
protected function getHandlerClass( $type ) {
return $this->registry[$type] ?? false;
}
/**
* @param string $type mimetype
* @return MediaHandler|false
*/
public function getHandler( $type ) {
if ( isset( $this->handlers[$type] ) ) {
return $this->handlers[$type];
}
$class = $this->getHandlerClass( $type );
if ( $class !== false ) {
/** @var MediaHandler $handler */
$handler = new $class;
if ( !$handler->isEnabled() ) {
$this->logger->debug(
'{class} is not enabled.',
[ 'class' => $class ]
);
$handler = false;
}
} else {
$this->logger->debug(
'no handler found for {type}.',
[ 'type' => $type ]
);
$handler = false;
}
$this->handlers[$type] = $handler;
return $handler;
}
}

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MediaHandlerFactory.php (2 KB)

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