C# Class Moxie.PngEncoder.DeflaterOutputStream

A special stream deflating or compressing the bytes that are written to it. It uses a Deflater to perform actual deflating.
Authors of the original java version : Tom Tromey, Jochen Hoenicke

Inheritance: Stream

Afficher le fichier Open project: openHPI/moodle-mod_teletask Class Usage Examples

Protected Properties

Свойство	Type	Description
baseOutputStream_	Stream
deflater_	Deflater

Méthodes publiques

Méthode	Description
BeginRead ( byte buffer, int offset, int count, AsyncCallback callback, object state ) : IAsyncResult	Asynchronous reads are not supported a NotSupportedException is always thrown
BeginWrite ( byte buffer, int offset, int count, AsyncCallback callback, object state ) : IAsyncResult	Asynchronous writes arent supported, a NotSupportedException is always thrown
Close ( ) : void	Calls Finish and closes the underlying stream when is true.
DeflaterOutputStream ( Stream baseOutputStream ) : System	Creates a new DeflaterOutputStream with a default Deflater and default buffer size.
DeflaterOutputStream ( Stream baseOutputStream, Deflater deflater ) : System	Creates a new DeflaterOutputStream with the given Deflater and default buffer size.
DeflaterOutputStream ( Stream baseOutputStream, Deflater deflater, int bufferSize ) : System	Creates a new DeflaterOutputStream with the given Deflater and buffer size.
Finish ( ) : void	Finishes the stream by calling finish() on the deflater.
Flush ( ) : void	Flushes the stream by calling Flush on the deflater and then on the underlying stream. This ensures that all bytes are flushed.
Read ( byte buffer, int offset, int count ) : int	Read a block of bytes from stream
ReadByte ( ) : int	Read a byte from stream advancing position by one
Seek ( long offset, SeekOrigin origin ) : long	Sets the current position of this stream to the given value. Not supported by this class!
SetLength ( long value ) : void	Sets the length of this stream to the given value. Not supported by this class!
Write ( byte buffer, int offset, int count ) : void	Writes bytes from an array to the compressed stream.
WriteByte ( byte value ) : void	Writes a single byte to the compressed output stream.

Méthodes protégées

Méthode	Description
Deflate ( ) : void	Deflates everything in the input buffers. This will call `def.deflate()` until all bytes from the input buffers are processed.
EncryptBlock ( byte buffer, int offset, int length ) : void	Encrypt a block of data
EncryptByte ( ) : byte	Encrypt a single byte
UpdateKeys ( byte ch ) : void	Update encryption keys

Method Details

BeginRead() public méthode

Asynchronous reads are not supported a NotSupportedException is always thrown

Any access

public BeginRead ( byte buffer, int offset, int count, AsyncCallback callback, object state ) : IAsyncResult
buffer	byte	The buffer to read into.
offset	int	The offset to start storing data at.
count	int	The number of bytes to read
callback	AsyncCallback	The async callback to use.
state	object	The state to use.
Résultat	IAsyncResult

BeginWrite() public méthode

Asynchronous writes arent supported, a NotSupportedException is always thrown

Any access

public BeginWrite ( byte buffer, int offset, int count, AsyncCallback callback, object state ) : IAsyncResult
buffer	byte	The buffer to write.
offset	int	The offset to begin writing at.
count	int	The number of bytes to write.
callback	AsyncCallback	The to use.
state	object	The state object.
Résultat	IAsyncResult

Close() public méthode

Calls Finish and closes the underlying stream when is true.

public Close ( ) : void
Résultat	void

Deflate() protected méthode

Deflates everything in the input buffers. This will call def.deflate() until all bytes from the input buffers are processed.

protected Deflate ( ) : void
Résultat	void

DeflaterOutputStream() public méthode

Creates a new DeflaterOutputStream with a default Deflater and default buffer size.

public DeflaterOutputStream ( Stream baseOutputStream ) : System
baseOutputStream	Stream	/// the output stream where deflated output should be written. ///
Résultat	System

DeflaterOutputStream() public méthode

Creates a new DeflaterOutputStream with the given Deflater and default buffer size.

public DeflaterOutputStream ( Stream baseOutputStream, Deflater deflater ) : System
baseOutputStream	Stream	/// the output stream where deflated output should be written. ///
deflater	Deflater	/// the underlying deflater. ///
Résultat	System

DeflaterOutputStream() public méthode

Creates a new DeflaterOutputStream with the given Deflater and buffer size.

/// bufsize is less than or equal to zero. /// /// baseOutputStream does not support writing /// /// deflater instance is null ///

public DeflaterOutputStream ( Stream baseOutputStream, Deflater deflater, int bufferSize ) : System
baseOutputStream	Stream	/// The output stream where deflated output is written. ///
deflater	Deflater	/// The underlying deflater to use ///
bufferSize	int	/// The buffer size to use when deflating ///
Résultat	System

EncryptBlock() protected méthode

Encrypt a block of data

protected EncryptBlock ( byte buffer, int offset, int length ) : void
buffer	byte	/// Data to encrypt. NOTE the original contents of the buffer are lost ///
offset	int	/// Offset of first byte in buffer to encrypt ///
length	int	/// Number of bytes in buffer to encrypt ///
Résultat	void

EncryptByte() protected méthode

Encrypt a single byte

protected EncryptByte ( ) : byte
Résultat	byte

Finish() public méthode

Finishes the stream by calling finish() on the deflater.

/// Not all input is deflated ///

public Finish ( ) : void
Résultat	void

Flush() public méthode

Flushes the stream by calling Flush on the deflater and then on the underlying stream. This ensures that all bytes are flushed.

public Flush ( ) : void
Résultat	void

Read() public méthode

Read a block of bytes from stream

Any access

public Read ( byte buffer, int offset, int count ) : int
buffer	byte	The buffer to store read data in.
offset	int	The offset to start storing at.
count	int	The maximum number of bytes to read.
Résultat	int

ReadByte() public méthode

Read a byte from stream advancing position by one

Any access

public ReadByte ( ) : int
Résultat	int

Seek() public méthode

Sets the current position of this stream to the given value. Not supported by this class!

Any access

public Seek ( long offset, SeekOrigin origin ) : long
offset	long	The offset relative to the to seek.
origin	SeekOrigin	The to seek from.
Résultat	long

SetLength() public méthode

Sets the length of this stream to the given value. Not supported by this class!

Any access

public SetLength ( long value ) : void
value	long	The new stream length.
Résultat	void

UpdateKeys() protected méthode

Update encryption keys

protected UpdateKeys ( byte ch ) : void
ch	byte
Résultat	void

Write() public méthode

Writes bytes from an array to the compressed stream.

public Write ( byte buffer, int offset, int count ) : void
buffer	byte	/// The byte array ///
offset	int	/// The offset into the byte array where to start. ///
count	int	/// The number of bytes to write. ///
Résultat	void

WriteByte() public méthode

Writes a single byte to the compressed output stream.

public WriteByte ( byte value ) : void
value	byte	/// The byte value. ///
Résultat	void

Property Details

baseOutputStream_ protected_oe property

Base stream the deflater depends on.

protected Stream baseOutputStream_
Résultat	Stream

deflater_ protected_oe property

The deflater which is used to deflate the stream.

protected Deflater,Moxie.PngEncoder deflater_
Résultat	Deflater