Weblabor

class Clean_Communication_Message_Transformation_Upload_File implements Clean_Transformation_TransformerInterface {

    protected $acceptedMimeTypes;

    public function __construct(array $acceptedMimeTypes) {
        $this->acceptedMimeTypes = $acceptedMimeTypes;
    }

    public function transform($subject) {
        if (!is_array($subject))
            throw new InvalidArgumentException('Upload subject must be array.');
        if ($subject['error'] != UPLOAD_ERR_OK || !is_uploaded_file(realpath($subject['tmp_name'])))
            throw new Exception('Upload error occured: ' . var_export($subject, true));
        if (!in_array($subject['type'], $this->acceptedMimeTypes))
            throw new InvalidArgumentException('Subject mime type: ' . $subject['type'] . ' is not allowed: ' . Clean_String::concat($this->acceptedMimeTypes, ', '));
        return new Clean_FileSystem_File($subject['tmp_name']);
    }

}