class ConvertError(Exception):
    """
    Base exception for all coverter app exceptions
    """
    pass


class UnknownFormat(ConvertError):
    """
    Raised when the converter backend can't understand or there
    isn't an appropiate driver available
    """
    pass


class UnpaperError(ConvertError):
    """
    Raised by unpaper
    """
    pass


class IdentifyError(ConvertError):
    """
    Raised by identify
    """
    pass


class UnkownConvertError(ConvertError):
    """
    Raised when an error is found but there is no disernible way to
    identify the kind of error
    """
    pass


class OfficeConversionError(ConvertError):
    pass