Diff

Differences From Artifact [2cc1907fb9]:

To Artifact [c65cc5c256]:


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type context struct {
	table  [1 << 16]byte
	buffer [1 << 3]byte
	input  []byte
	hash   uint16
}


// Returns a closure over the provided writer that compresses data when called.






//
// It can buffer data as the predictor mandates 8-byte blocks with a header.
// A call with no data will force a flush.
func Compressor(writer io.Writer) func([]byte) error {
	var ctx context
	ctx.input = ctx.buffer[:0]

	// Forward declaration as it is required for recursion
	var write func(data []byte) error

	write = func(data []byte) error {
		var (
			blockSize    int = 8
			bufferLength int = len(ctx.input)
		)








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type context struct {
	table  [1 << 16]byte
	buffer [1 << 3]byte
	input  []byte
	hash   uint16
}

type compressor func([]byte) error

func (w compressor) Write(data []byte) (int, error) {
	return len(data), w(data)
}

// Returns an io.Writer implementation that wraps the provided io.Writer
// and compresses data according to the predictor algorithm
//
// It can buffer data as the predictor mandates 8-byte blocks with a header.
// A call with no data will force a flush.
func Compressor(writer io.Writer) io.Writer {
	var ctx context
	ctx.input = ctx.buffer[:0]

	// Forward declaration as it is required for recursion
	var write compressor

	write = func(data []byte) error {
		var (
			blockSize    int = 8
			bufferLength int = len(ctx.input)
		)

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		return nil
	}

	return write
}


type reader func([]byte) (int, error)


func (r reader) Read(output []byte) (int, error) {
	return r(output)
}

// TODO - document

func Decompressor(wrapped io.Reader) io.Reader {
	var ctx context
	ctx.input = ctx.buffer[:0]

	return reader(func(output []byte) (int, error) {
		var (
			err       error
			flags     byte
			readCount int
		)

		// Sanity check for space to read into







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		return nil
	}

	return write
}

// A function type alias so that it can have methods attached to it
type decompressor func([]byte) (int, error)

// Required to implement io.Reader
func (r decompressor) Read(output []byte) (int, error) {
	return r(output)
}

// Returns an io.Reader implementation that wraps the provided io.Reader
// and decompresses data according to the predictor algorithm
func Decompressor(wrapped io.Reader) io.Reader {
	var ctx context
	ctx.input = ctx.buffer[:0]

	return decompressor(func(output []byte) (int, error) {
		var (
			err       error
			flags     byte
			readCount int
		)

		// Sanity check for space to read into