return &s3Error{
		code:       "CSVParsingError",
		message:    "Encountered an error parsing the CSV file. Check the file and try again.",
		statusCode: 400,
		cause:      err,
	}
}

func errInvalidTextEncodingError() *s3Error {
	return &s3Error{
		code:       "InvalidTextEncoding",
		message:    "UTF-8 encoding is required.",
		statusCode: 400,
		cause:      errors.New("invalid utf8 encoding"),
	}

		// Read column names
		// Get one line.
		b, err := r.nextSplit(0, nil)
		if err != nil {
			r.err = err
			return err
		}
		if !utf8.Valid(b) {
			return errInvalidTextEncodingError()
		}
		reader := newReader(bytes.NewReader(b))
		record, err := reader.Read()
		if err != nil {
			r.err = err
			if err != io.EOF {
				r.err = errCSVParsingError(err)