Class CompressedStreamReader

Reader, that reads stream with compressed data

Inheritance

System.Object

CompressedStreamReader

Namespace: Syncfusion.Compression

Assembly: Syncfusion.Compression.Portable.dll

Syntax

public class CompressedStreamReader : Object

Constructors

CompressedStreamReader(Stream)

TODO: place correct comment here

Declaration

public CompressedStreamReader(Stream stream)

Parameters

Type	Name	Description
System.IO.Stream	stream

CompressedStreamReader(Stream, Boolean)

Creates new reader for streams with compressed data.

Declaration

public CompressedStreamReader(Stream stream, bool bNoWrap)

Parameters

Type	Name	Description
System.IO.Stream	stream
System.Boolean	bNoWrap

Properties

AvailableBits

GET count of bits available

Declaration

protected int AvailableBits { get; }

Property Value

Type	Description
System.Int32

AvailableBytes

Get count of full bytes available.

Declaration

protected long AvailableBytes { get; }

Property Value

Type	Description
System.Int64

Methods

BitsToString(Int32, Int32)

TODO: place correct comment here

Declaration

protected string BitsToString(int bits, int count)

Parameters

Type	Name	Description
System.Int32	bits
System.Int32	count

Returns

Type	Description
System.String	TODO: place correct comment here

ChecksumReset()

Resets current checksum to 1.

Declaration

protected void ChecksumReset()

ChecksumUpdate(Byte[], Int32, Int32)

Updates checksum by calculating checksum of the given buffer and adding it to current value.

Declaration

protected void ChecksumUpdate(byte[] buffer, int offset, int length)

Parameters

Type	Name	Description
System.Byte[]	buffer	Data byte array.
System.Int32	offset	Offset in the buffer.
System.Int32	length	Length of data to be used from the stream.

DecodeBlockHeader()

Reads and decodes block of data.

Declaration

protected bool DecodeBlockHeader()

Returns

Type	Description
System.Boolean	True if buffer was empty and new data was read, otherwise - False.

DecodeDynHeader(out DecompressorHuffmanTree, out DecompressorHuffmanTree)

Reades dynamic huffman codes from block header.

Declaration

protected void DecodeDynHeader(out DecompressorHuffmanTree lengthTree, out DecompressorHuffmanTree distanceTree)

Parameters

Type	Name	Description
DecompressorHuffmanTree	lengthTree	Literals/Lengths tree.
DecompressorHuffmanTree	distanceTree	Distances tree.

FillBuffer()

Fill`s empty parts of the buffer.

Declaration

protected void FillBuffer()

PeekBits(Int32)

Reads specified count of bits without adjusting position.

Declaration

protected int PeekBits(int count)

Parameters

Type	Name	Description
System.Int32	count	Count of bits to be read.

Returns

Type	Description
System.Int32	Read value.

Read(Byte[], Int32, Int32)

Reads data to buffer.

Declaration

public int Read(byte[] buffer, int offset, int length)

Parameters

Type	Name	Description
System.Byte[]	buffer	Output buffer for data.
System.Int32	offset	Offset in output data.
System.Int32	length	Length of the data to be read.

Returns

Type	Description
System.Int32	Count of bytes actually read.

ReadBits(Int32)

Reads specified count of bits from stream.

Declaration

protected int ReadBits(int count)

Parameters

Type	Name	Description
System.Int32	count	Count of bits to be read.

Returns

Type	Description
System.Int32	TODO: place correct comment here

ReadInt16()

TODO: place correct comment here

Declaration

protected int ReadInt16()

Returns

Type	Description
System.Int32	TODO: place correct comment here

ReadInt16Inverted()

TODO: place correct comment here

Declaration

protected int ReadInt16Inverted()

Returns

Type	Description
System.Int32	TODO: place correct comment here

ReadInt32()

TODO: place correct comment here

Declaration

protected long ReadInt32()

Returns

Type	Description
System.Int64	TODO: place correct comment here

ReadPackedBytes(Byte[], Int32, Int32)

Reads array of bytes.

Declaration

protected int ReadPackedBytes(byte[] buffer, int offset, int length)

Parameters

Type	Name	Description
System.Byte[]	buffer	Output buffer.
System.Int32	offset	Offset in output buffer.
System.Int32	length	Length of the data to be read.

Returns

Type	Description
System.Int32	Count of bytes actually read to the buffer.

ReadZLibHeader()

Reads ZLib header with compression method and flags.

Declaration

protected void ReadZLibHeader()

SkipBits(Int32)

Skips specified count of bits.

Declaration

protected void SkipBits(int count)

Parameters

Type	Name	Description
System.Int32	count	Count of bits to be skipped.

SkipToBoundary()

Discards left-most partially used byte.

Declaration

protected void SkipToBoundary()