ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow Class Reference

Contains the output from the Inflation process. We need to have a window so that we can refer backwards into the output stream to repeat stuff.
Author of the original java version : John Leuner. More...

Public Member Functions
void	Write (int value)
	Write a byte to this output window.
void	Repeat (int length, int distance)
	Append a byte pattern already in the window itself.
int	CopyStored (StreamManipulator input, int length)
	Copy from input manipulator to internal window.
void	CopyDict (byte[] dictionary, int offset, int length)
	Copy dictionary to window.
int	GetFreeSpace ()
	Get remaining unfilled space in window.
int	GetAvailable ()
	Get bytes available for output in window.
int	CopyOutput (byte[] output, int offset, int len)
	Copy contents of window to output.
void	Reset ()
	Reset by clearing window so GetAvailable returns 0.

Private Member Functions
void	SlowRepeat (int repStart, int length, int distance)

Private Attributes
byte[]	window = new byte[WindowSize]
int	windowEnd
int	windowFilled

Static Private Attributes
const int	WindowSize = 1 << 15
const int	WindowMask = WindowSize - 1

Detailed Description

Contains the output from the Inflation process. We need to have a window so that we can refer backwards into the output stream to repeat stuff.
Author of the original java version : John Leuner.

Member Function Documentation

CopyDict()

void ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow.CopyDict	(	byte[]	dictionary,
		int	offset,
		int	length )

Copy dictionary to window.

Parameters

dictionary	source dictionary
offset	offset of start in source dictionary
length	length of dictionary

Exceptions

InvalidOperationException

If window isnt empty

CopyOutput()

int ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow.CopyOutput	(	byte[]	output,
		int	offset,
		int	len )

Copy contents of window to output.

Parameters

output	buffer to copy to
offset	offset to start at
len	number of bytes to count

Returns

The number of bytes copied

Exceptions

InvalidOperationException

If a window underflow occurs

CopyStored()

int ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow.CopyStored	(	StreamManipulator	input,
		int	length )

Copy from input manipulator to internal window.

Parameters

input	source of data
length	length of data to copy

Returns

the number of bytes copied

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GetAvailable()

int ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow.GetAvailable

(

)

Get bytes available for output in window.

Returns

Number of bytes filled

GetFreeSpace()

int ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow.GetFreeSpace

(

)

Get remaining unfilled space in window.

Returns

Number of bytes left in window

Repeat()

void ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow.Repeat	(	int	length,
		int	distance )

Append a byte pattern already in the window itself.

Parameters

length	length of pattern to copy
distance	distance from end of window pattern occurs

Exceptions

InvalidOperationException

If the repeated data overflows the window

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Reset()

void ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow.Reset

(

)

Reset by clearing window so GetAvailable returns 0.

SlowRepeat()

void ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow.SlowRepeat ( int repStart, int length, int distance )

private

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Write()

void ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow.Write

(

int

value

)

Write a byte to this output window.

Parameters

value

value to write

Exceptions

InvalidOperationException

if window is full

Member Data Documentation

window

byte [] ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow.window = new byte[WindowSize]

private

windowEnd

int ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow.windowEnd

private

windowFilled

int ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow.windowFilled

private

WindowMask

const int ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow.WindowMask = WindowSize - 1

staticprivate

WindowSize

const int ICSharpCode.SharpZipLib.Zip.Compression.Streams.OutputWindow.WindowSize = 1 << 15

staticprivate

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The documentation for this class was generated from the following file:

• ICSharpCode.SharpZLib/Zip/Compression/Streams/OutputWindow.cs