Function processFileInZipArchive

archive/archive.go:141–177

(file *zip.File, tarWriter *tar.Writer)

}

func processFileInZipArchive(file *zip.File, tarWriter *tar.Writer) error {
	fileReader, err := file.Open()
	if err != nil {
		return err
	}
	defer fileReader.Close()

	size := file.FileInfo().Size()
	if size < 0 {
		return ErrArchiveTooLarge
	}

	err = tarWriter.WriteHeader(&tar.Header{
		Name:    file.Name,
		Size:    size,
		Mode:    int64(file.Mode()),
		ModTime: file.Modified,
		// Note: Zip archives do not store ownership information.
		Uid: 1000,
		Gid: 1000,
	})
	if err != nil {
		return err
	}

	_, err = io.CopyN(tarWriter, fileReader, size)
	switch {
	case errors.Is(err, io.EOF), errors.Is(err, io.ErrUnexpectedEOF):
		return ErrInvalidZipContent
	case errors.Is(err, zip.ErrChecksum), errors.Is(err, zip.ErrFormat):
		return ErrInvalidZipContent
	case err != nil:
		return err
	default:
		return nil
	}
}

// CreateZipFromTar converts the given tarReader to a zip archive.
func CreateZipFromTar(tarReader *tar.Reader, maxSize int64) ([]byte, error) {