}
	}
	size := int64(f.CompressedSize64)
	r := io.NewSectionReader(f.zipr, f.headerOffset+bodyOffset, size)
	dcomp := f.zip.decompressor(f.Method)
	if dcomp == nil {
		return nil, ErrAlgorithm
	}
	var rc io.ReadCloser = dcomp(r)
	var desr io.Reader
	if f.hasDataDescriptor() {
		desr = io.NewSectionReader(f.zipr, f.headerOffset+bodyOffset+size, dataDescriptorLen)
	}
	rc = &checksumReader{

		if len(b.data) == 0 && b.tillOffset != streamOffset {
			b.rc, err = b.disk.ReadFileStream(context.TODO(), b.volume, b.filePath, streamOffset, b.tillOffset-streamOffset)
		} else {
			b.rc = io.NewSectionReader(bytes.NewReader(b.data), streamOffset, b.tillOffset-streamOffset)
		}
		if err != nil {
			return 0, err
		}
	}
	if offset != b.currOffset {
		// Can never happen unless there are programmer bugs

pkg io, func CopyN(Writer, Reader, int64) (int64, error)
pkg io, func LimitReader(Reader, int64) Reader
pkg io, func MultiReader(...Reader) Reader
pkg io, func MultiWriter(...Writer) Writer
pkg io, func NewSectionReader(ReaderAt, int64, int64) *SectionReader
pkg io, func Pipe() (*PipeReader, *PipeWriter)
pkg io, func ReadAtLeast(Reader, []uint8, int) (int, error)
pkg io, func ReadFull(Reader, []uint8) (int, error)