FilenameSanitizerPreProcessor.php

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<?php

namespace ILIAS\FileUpload\Processor;

use ILIAS\Filesystem\Stream\FileStream;
use ILIAS\FileUpload\DTO\Metadata;
use ILIAS\FileUpload\DTO\ProcessingStatus;
use League\Flysystem\Util;

final class FilenameSanitizerPreProcessor implements PreProcessor
{
    public function process(FileStream $stream, Metadata $metadata): ProcessingStatus
    {
        $filename = $metadata->getFilename();

        // remove some special characters
        $filename = \ILIAS\Filesystem\Util::sanitizeFileName($filename);

        $metadata->setFilename(Util::normalizeRelativePath($filename));

        return new ProcessingStatus(ProcessingStatus::OK, 'Filename changed');
    }
}