Function extractTarGz

cli/software/sofware.go:134–175

(gzipStream io.Reader, dst io.Writer)

}

func extractTarGz(gzipStream io.Reader, dst io.Writer) error {
	uncompressedStream, err := gzip.NewReader(gzipStream)
	if err != nil {
		return fmt.Errorf("gzip reader failed: %w", err)
	}

	tarReader := tar.NewReader(uncompressedStream)

	for {
		header, err := tarReader.Next()

		if errors.Is(err, io.EOF) {
			break
		}

		if err != nil {
			return fmt.Errorf("tar reader failed: %w", err)
		}

		switch header.Typeflag {
		case tar.TypeDir:
			return errors.New( //nolint:err113
				"expected a file inside tarball, found a directory instead",
			)
		case tar.TypeReg:
			if _, err := io.Copy(dst, tarReader); err != nil { //nolint:gosec
				return fmt.Errorf("failed to copy file: %w", err)
			}

			return nil

		default:
			return fmt.Errorf( //nolint:err113
				"unknown type: %b in %s",
				header.Typeflag,
				header.Name,
			)
		}
	}

	return errors.New("no file found in tarball") //nolint:err113
}