owncloud/core

<?php
/**
 * @author Bernhard Posselt <dev@bernhard-posselt.com>
 * @author Lukas Reschke <lukas@statuscode.ch>
 * @author Morris Jobke <hey@morrisjobke.de>
 *
 * @copyright Copyright (c) 2018, ownCloud GmbH
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License, version 3,
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 *
 */

namespace OCP\AppFramework\Http;

use OCP\AppFramework\Http;

/**
 * Class StreamResponse
 *
 * @package OCP\AppFramework\Http
 * @since 8.1.0
 */
class StreamResponse extends Response implements ICallbackResponse {
    /** @var string */
    private $filePath;

    /**
     * @param string $filePath the path to the file which should be streamed
     * @since 8.1.0
     */
    public function __construct($filePath) {
        $this->filePath = $filePath;
    }

    /**
     * Streams the file using readfile
     *
     * @param IOutput $output a small wrapper that handles output
     * @since 8.1.0
     */
    public function callback(IOutput $output) {
        // handle caching
        if ($output->getHttpResponseCode() !== Http::STATUS_NOT_MODIFIED) {
            if (!\file_exists($this->filePath)) {
                $output->setHttpResponseCode(Http::STATUS_NOT_FOUND);
            } elseif ($output->setReadfile($this->filePath) === false) {
                $output->setHttpResponseCode(Http::STATUS_BAD_REQUEST);
            }
        }
    }
}