if len(b) == 0 {
		return 0, nil
	}
	return 0, errors.New("zip: write to directory")
}

type fileWriter struct {
	*header
	zipw      io.Writer
	rawCount  *countWriter
	comp      io.WriteCloser
	compCount *countWriter
	crc32     hash.Hash32
	closed    bool
}

func (w *fileWriter) Write(p []byte) (int, error) {
	if w.closed {
		return 0, errors.New("zip: write to closed file")
	}

pkg io, type SectionReader struct
pkg io, type Seeker interface { Seek }
pkg io, type Seeker interface, Seek(int64, int) (int64, error)
pkg io, type WriteCloser interface { Close, Write }
pkg io, type WriteCloser interface, Close() error
pkg io, type WriteCloser interface, Write([]uint8) (int, error)
pkg io, type WriteSeeker interface { Seek, Write }
pkg io, type WriteSeeker interface, Seek(int64, int) (int64, error)

pkg archive/zip, func RegisterDecompressor(uint16, Decompressor)
pkg archive/zip, method (*File) DataOffset() (int64, error)
pkg archive/zip, type Compressor func(io.Writer) (io.WriteCloser, error)
pkg archive/zip, type Decompressor func(io.Reader) io.ReadCloser
pkg bufio, method (*Reader) Reset(io.Reader)
pkg bufio, method (*Writer) Reset(io.Writer)
pkg compress/flate, method (*Writer) Reset(io.Writer)