9.5/_abstract_online_media_helper_8php_source.html

<?php

namespace ‪TYPO3\CMS\Core\Resource\OnlineMedia\Helpers;


/*

 * This file is part of the TYPO3 CMS project.

 *

 * It is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License, either version 2

 * of the License, or any later version.

 *

 * For the full copyright and license information, please read the

 * LICENSE.txt file that was distributed with this source code.

 *

 * The TYPO3 project - inspiring people to share!

 */


use ‪TYPO3\CMS\Core\Core\Environment;

use ‪TYPO3\CMS\Core\Resource\DuplicationBehavior;

use ‪TYPO3\CMS\Core\Resource\File;

use ‪TYPO3\CMS\Core\Resource\Folder;

use ‪TYPO3\CMS\Core\Resource\Index\FileIndexRepository;

use ‪TYPO3\CMS\Core\Resource\ResourceFactory;

use ‪TYPO3\CMS\Core\Utility\GeneralUtility;


abstract class ‪AbstractOnlineMediaHelper implements ‪OnlineMediaHelperInterface

{

    protected ‪$onlineMediaIdCache = [];


    protected ‪$extension = '';


    public function ‪__construct(‪$extension)

    {

        $this->extension = ‪$extension;

    }


    public function ‪getOnlineMediaId(‪File $file)

    {

        if (!isset($this->onlineMediaIdCache[$file->‪getUid()])) {

            // Limiting media identifier to 2048 bytes

            if ($file->‪getSize() > 2048) {

                return '';

            }

            // By definition these files only contain the ID of the remote media source

            $this->onlineMediaIdCache[$file->‪getUid()] = trim($file->‪getContents());

        }

        return $this->onlineMediaIdCache[$file->‪getUid()];

    }


    protected function ‪findExistingFileByOnlineMediaId($onlineMediaId, ‪Folder $targetFolder, $fileExtension)

    {

        $file = null;

        $fileHash = sha1($onlineMediaId);

        $files = $this->‪getFileIndexRepository()->‪findByContentHash($fileHash);

        if (!empty($files)) {

            foreach ($files as $fileIndexEntry) {

                if (

                    $fileIndexEntry['folder_hash'] === $targetFolder->‪getHashedIdentifier()

                    && (int)$fileIndexEntry['storage'] === $targetFolder->‪getStorage()->‪getUid()

                    && $fileIndexEntry['extension'] === $fileExtension

                ) {

                    $file = $this->‪getResourceFactory()->‪getFileObject($fileIndexEntry['uid'], $fileIndexEntry);

                    break;

                }

            }

        }

        return $file;

    }


    protected function ‪createNewFile(‪Folder $targetFolder, $fileName, $onlineMediaId)

    {

        $temporaryFile = GeneralUtility::tempnam('online_media');

        GeneralUtility::writeFileToTypo3tempDir($temporaryFile, $onlineMediaId);

        $file = $targetFolder->‪addFile($temporaryFile, $fileName, ‪DuplicationBehavior::RENAME);

        return $file;

    }


    protected function ‪getTempFolderPath()

    {

        $path = ‪Environment::getVarPath() . '/transient/';

        if (!is_dir($path)) {

            GeneralUtility::mkdir_deep($path);

        }

        return $path;

    }


    protected function ‪getFileIndexRepository()

    {

        return ‪FileIndexRepository::getInstance();

    }


    protected function ‪getResourceFactory()

    {

        return ‪ResourceFactory::getInstance();

    }

}