An output stream that compresses into the BZip2 format including file header chars into another stream. More...

Inheritance diagram for ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream:

Collaboration diagram for ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream:

Classes
struct	StackElement

Public Member Functions
	BZip2OutputStream (Stream stream)
	Construct a default output stream with maximum block size.
	BZip2OutputStream (Stream stream, int blockSize)
	Initialise a new instance of the BZip2OutputStream for the specified stream, using the given blocksize.
override long	Seek (long offset, SeekOrigin origin)
	Sets the current position of this stream to the given value.
override void	SetLength (long value)
	Sets the length of this stream to the given value.
override int	ReadByte ()
	Read a byte from the stream advancing the position.
override int	Read (byte[] buffer, int offset, int count)
	Read a block of bytes.
override void	Write (byte[] buffer, int offset, int count)
	Write a block of bytes to the stream.
override void	WriteByte (byte value)
	Write a byte to the stream.
override void	Close ()
	End the current block and end compression. Close the stream and free any resources.
override void	Flush ()
	Flush output buffers.

Protected Member Functions
override void	Dispose (bool disposing)
	Releases the unmanaged resources used by the BZip2OutputStream and optionally releases the managed resources.

Properties
bool	IsStreamOwner `[get, set]`
	Get/set flag indicating ownership of underlying stream. When the flag is true Close will close the underlying stream also.
override bool	CanRead `[get]`
	Gets a value indicating whether the current stream supports reading.
override bool	CanSeek `[get]`
	Gets a value indicating whether the current stream supports seeking.
override bool	CanWrite `[get]`
	Gets a value indicating whether the current stream supports writing.
override long	Length `[get]`
	Gets the length in bytes of the stream.
override long	Position `[get, set]`
	Gets or sets the current position of this stream.
int	BytesWritten `[get]`
	Get the number of bytes written to the output.

Private Member Functions
	~BZip2OutputStream ()
	Ensures that resources are freed and other cleanup operations are performed when the garbage collector reclaims the BZip2OutputStream.
void	MakeMaps ()
void	WriteRun ()
	Get the number of bytes written to output.
void	Initialize ()
void	InitBlock ()
void	EndBlock ()
void	EndCompression ()
void	BsSetStream (Stream stream)
void	BsFinishedWithStream ()
void	BsW (int n, int v)
void	BsPutUChar (int c)
void	BsPutint (int u)
void	BsPutIntVS (int numBits, int c)
void	SendMTFValues ()
void	MoveToFrontCodeAndSend ()
void	SimpleSort (int lo, int hi, int d)
void	Vswap (int p1, int p2, int n)
void	QSort3 (int loSt, int hiSt, int dSt)
void	MainSort ()
void	RandomiseBlock ()
void	DoReversibleTransformation ()
bool	FullGtU (int i1, int i2)
void	AllocateCompressStructures ()
void	GenerateMTFValues ()

Static Private Member Functions
static void	Panic ()
static void	HbMakeCodeLengths (char[] len, int[] freq, int alphaSize, int maxLen)
static void	HbAssignCodes (int[] code, char[] length, int minLen, int maxLen, int alphaSize)
static byte	Med3 (byte a, byte b, byte c)

Private Attributes
readonly int[]	increments
bool	isStreamOwner = true
int	last
int	origPtr
int	blockSize100k
bool	blockRandomised
int	bytesOut
int	bsBuff
int	bsLive
IChecksum	mCrc = new StrangeCRC()
bool[]	inUse = new bool[256]
int	nInUse
char[]	seqToUnseq = new char[256]
char[]	unseqToSeq = new char[256]
char[]	selector = new char[BZip2Constants.MaximumSelectors]
char[]	selectorMtf = new char[BZip2Constants.MaximumSelectors]
byte[]	block
int[]	quadrant
int[]	zptr
short[]	szptr
int[]	ftab
int	nMTF
int[]	mtfFreq = new int[BZip2Constants.MaximumAlphaSize]
int	workFactor
int	workDone
int	workLimit
bool	firstAttempt
int	nBlocksRandomised
int	currentChar = -1
int	runLength
uint	blockCRC
uint	combinedCRC
int	allowableBlockSize
Stream	baseStream
bool	disposed_

Static Private Attributes
const int	SETMASK = (1 << 21)
const int	CLEARMASK = (~SETMASK)
const int	GREATER_ICOST = 15
const int	LESSER_ICOST = 0
const int	SMALL_THRESH = 20
const int	DEPTH_THRESH = 10
const int	QSORT_STACK_SIZE = 1000

Detailed Description

An output stream that compresses into the BZip2 format including file header chars into another stream.

Constructor & Destructor Documentation

◆ BZip2OutputStream() [1/2]

ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.BZip2OutputStream ( Stream stream )

Construct a default output stream with maximum block size.

Parameters

stream The stream to write BZip data onto.

◆ BZip2OutputStream() [2/2]

ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.BZip2OutputStream	(	Stream	stream,
		int	blockSize )

Initialise a new instance of the BZip2OutputStream for the specified stream, using the given blocksize.

Parameters

stream	The stream to write compressed data to.
blockSize	The block size to use.

Valid block sizes are in the range 1..9, with 1 giving the lowest compression and 9 the highest.

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◆ ~BZip2OutputStream()

ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.~BZip2OutputStream ( )

private

Ensures that resources are freed and other cleanup operations are performed when the garbage collector reclaims the BZip2OutputStream.

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Member Function Documentation

◆ AllocateCompressStructures()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.AllocateCompressStructures ( )

private

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◆ BsFinishedWithStream()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.BsFinishedWithStream ( )

private

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◆ BsPutint()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.BsPutint ( int u )

private

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◆ BsPutIntVS()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.BsPutIntVS	(	int	numBits,
		int	c )

private

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◆ BsPutUChar()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.BsPutUChar ( int c )

private

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◆ BsSetStream()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.BsSetStream ( Stream stream )

private

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◆ BsW()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.BsW	(	int	n,
		int	v )

private

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◆ Close()

override void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.Close ( )

End the current block and end compression. Close the stream and free any resources.

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◆ Dispose()

override void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.Dispose ( bool disposing )

protected

Releases the unmanaged resources used by the BZip2OutputStream and optionally releases the managed resources.

Parameters

disposing true to release both managed and unmanaged resources; false to release only unmanaged resources.

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◆ DoReversibleTransformation()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.DoReversibleTransformation ( )

private

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◆ EndBlock()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.EndBlock ( )

private

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◆ EndCompression()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.EndCompression ( )

private

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◆ Flush()

override void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.Flush ( )

Flush output buffers.

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◆ FullGtU()

bool ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.FullGtU	(	int	i1,
		int	i2 )

private

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◆ GenerateMTFValues()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.GenerateMTFValues ( )

private

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◆ HbAssignCodes()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.HbAssignCodes	(	int[]	code,
		char[]	length,
		int	minLen,
		int	maxLen,
		int	alphaSize )

staticprivate

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◆ HbMakeCodeLengths()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.HbMakeCodeLengths	(	char[]	len,
		int[]	freq,
		int	alphaSize,
		int	maxLen )

staticprivate

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◆ InitBlock()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.InitBlock ( )

private

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◆ Initialize()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.Initialize ( )

private

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◆ MainSort()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.MainSort ( )

private

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◆ MakeMaps()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.MakeMaps ( )

private

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◆ Med3()

byte ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.Med3	(	byte	a,
		byte	b,
		byte	c )

staticprivate

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◆ MoveToFrontCodeAndSend()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.MoveToFrontCodeAndSend ( )

private

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◆ Panic()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.Panic ( )

staticprivate

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◆ QSort3()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.QSort3	(	int	loSt,
		int	hiSt,
		int	dSt )

private

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◆ RandomiseBlock()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.RandomiseBlock ( )

private

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◆ Read()

override int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.Read	(	byte[]	buffer,
		int	offset,
		int	count )

Read a block of bytes.

Parameters

buffer	The buffer to read into.
offset	The offset in the buffer to start storing data at.
count	The maximum number of bytes to read.

Returns: The total number of bytes read. This might be less than the number of bytes requested if that number of bytes are not currently available, or zero if the end of the stream is reached.

◆ ReadByte()

override int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.ReadByte ( )

Read a byte from the stream advancing the position.

Returns: The byte read cast to an int; -1 if end of stream.

◆ Seek()

override long ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.Seek	(	long	offset,
		SeekOrigin	origin )

Sets the current position of this stream to the given value.

Parameters

offset	The point relative to the offset from which to being seeking.
origin	The reference point from which to begin seeking.

Returns: The new position in the stream.

◆ SendMTFValues()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.SendMTFValues ( )

private

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◆ SetLength()

override void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.SetLength ( long value )

Sets the length of this stream to the given value.

Parameters

value The new stream length.

◆ SimpleSort()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.SimpleSort	(	int	lo,
		int	hi,
		int	d )

private

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◆ Vswap()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.Vswap	(	int	p1,
		int	p2,
		int	n )

private

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◆ Write()

override void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.Write	(	byte[]	buffer,
		int	offset,
		int	count )

Write a block of bytes to the stream.

Parameters

buffer	The buffer containing data to write.
offset	The offset of the first byte to write.
count	The number of bytes to write.

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◆ WriteByte()

override void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.WriteByte ( byte value )

Write a byte to the stream.

Parameters

value The byte to write to the stream.

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◆ WriteRun()

void ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.WriteRun ( )

private

Get the number of bytes written to output.

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Member Data Documentation

◆ allowableBlockSize

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.allowableBlockSize

private

◆ baseStream

Stream ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.baseStream

private

◆ block

byte [] ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.block

private

◆ blockCRC

uint ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.blockCRC

private

◆ blockRandomised

bool ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.blockRandomised

private

◆ blockSize100k

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.blockSize100k

private

◆ bsBuff

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.bsBuff

private

◆ bsLive

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.bsLive

private

◆ bytesOut

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.bytesOut

private

◆ CLEARMASK

const int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.CLEARMASK = (~SETMASK)

staticprivate

◆ combinedCRC

uint ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.combinedCRC

private

◆ currentChar

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.currentChar = -1

private

◆ DEPTH_THRESH

const int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.DEPTH_THRESH = 10

staticprivate

◆ disposed_

bool ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.disposed_

private

◆ firstAttempt

bool ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.firstAttempt

private

◆ ftab

int [] ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.ftab

private

◆ GREATER_ICOST

const int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.GREATER_ICOST = 15

staticprivate

◆ increments

readonly int [] ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.increments

private

Initial value:

= new int[] { 
                                                  1, 4, 13, 40, 121, 364, 1093, 3280,
                                                  9841, 29524, 88573, 265720,
                                                  797161, 2391484 
                                              }

◆ inUse

bool [] ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.inUse = new bool[256]

private

◆ isStreamOwner

bool ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.isStreamOwner = true

private

◆ last

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.last

private

◆ LESSER_ICOST

const int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.LESSER_ICOST = 0

staticprivate

◆ mCrc

IChecksum ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.mCrc = new StrangeCRC()

private

◆ mtfFreq

int [] ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.mtfFreq = new int[BZip2Constants.MaximumAlphaSize]

private

◆ nBlocksRandomised

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.nBlocksRandomised

private

◆ nInUse

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.nInUse

private

◆ nMTF

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.nMTF

private

◆ origPtr

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.origPtr

private

◆ QSORT_STACK_SIZE

const int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.QSORT_STACK_SIZE = 1000

staticprivate

◆ quadrant

int [] ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.quadrant

private

◆ runLength

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.runLength

private

◆ selector

char [] ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.selector = new char[BZip2Constants.MaximumSelectors]

private

◆ selectorMtf

char [] ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.selectorMtf = new char[BZip2Constants.MaximumSelectors]

private

◆ seqToUnseq

char [] ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.seqToUnseq = new char[256]

private

◆ SETMASK

const int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.SETMASK = (1 << 21)

staticprivate

◆ SMALL_THRESH

const int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.SMALL_THRESH = 20

staticprivate

◆ szptr

short [] ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.szptr

private

◆ unseqToSeq

char [] ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.unseqToSeq = new char[256]

private

◆ workDone

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.workDone

private

◆ workFactor

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.workFactor

private

◆ workLimit

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.workLimit

private

◆ zptr

int [] ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.zptr

private

Property Documentation

◆ BytesWritten

int ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.BytesWritten

get

Get the number of bytes written to the output.

◆ CanRead

override bool ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.CanRead

get

Gets a value indicating whether the current stream supports reading.

◆ CanSeek

override bool ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.CanSeek

get

Gets a value indicating whether the current stream supports seeking.

◆ CanWrite

override bool ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.CanWrite

get

Gets a value indicating whether the current stream supports writing.

◆ IsStreamOwner

bool ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.IsStreamOwner

getset

Get/set flag indicating ownership of underlying stream. When the flag is true Close will close the underlying stream also.

◆ Length

override long ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.Length

get

Gets the length in bytes of the stream.

◆ Position

override long ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream.Position

getset

Gets or sets the current position of this stream.

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

ICSharpCode.SharpZLib/BZip2/BZip2OutputStream.cs

Classes

Public Member Functions

Protected Member Functions

Properties

Private Member Functions

Static Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ BZip2OutputStream() [1/2]

◆ BZip2OutputStream() [2/2]

◆ ~BZip2OutputStream()

Member Function Documentation

◆ AllocateCompressStructures()

◆ BsFinishedWithStream()

◆ BsPutint()

◆ BsPutIntVS()

◆ BsPutUChar()

◆ BsSetStream()

◆ BsW()

◆ Close()

◆ Dispose()

◆ DoReversibleTransformation()

◆ EndBlock()

◆ EndCompression()

◆ Flush()

◆ FullGtU()

◆ GenerateMTFValues()

◆ HbAssignCodes()

◆ HbMakeCodeLengths()

◆ InitBlock()

◆ Initialize()

◆ MainSort()

◆ MakeMaps()

◆ Med3()

◆ MoveToFrontCodeAndSend()

◆ Panic()

◆ QSort3()

◆ RandomiseBlock()

◆ Read()

◆ ReadByte()

◆ Seek()

◆ SendMTFValues()

◆ SetLength()

◆ SimpleSort()

◆ Vswap()

◆ Write()

◆ WriteByte()

◆ WriteRun()

Member Data Documentation

◆ allowableBlockSize

◆ baseStream

◆ block

◆ blockCRC

◆ blockRandomised

◆ blockSize100k

◆ bsBuff

◆ bsLive

◆ bytesOut

◆ CLEARMASK

◆ combinedCRC

◆ currentChar

◆ DEPTH_THRESH

◆ disposed_

◆ firstAttempt

◆ ftab

◆ GREATER_ICOST

◆ increments

◆ inUse

◆ isStreamOwner

◆ last

◆ LESSER_ICOST

◆ mCrc

◆ mtfFreq

◆ nBlocksRandomised

◆ nInUse

◆ nMTF

◆ origPtr

◆ QSORT_STACK_SIZE