ZipArchiveLib::CDeflateCompressor::COptions Struct Reference

#include <DeflateCompressor.h>

Inheritance diagram for ZipArchiveLib::CDeflateCompressor::COptions:

Public Member Functions
CZipCompressor::COptions *	Clone () const
int	GetType () const

Public Attributes
bool	m_bCheckLastBlock
bool	m_bCreateOffsetsArray
int	m_iSyncRatio
Public Attributes inherited from ZipArchiveLib::CBaseLibCompressor::COptions
bool	m_bDetectLibMemoryLeaks
Public Attributes inherited from CZipCompressor::COptions
int	m_iBufferSize

Additional Inherited Members
Public Types inherited from CZipCompressor::COptions
enum	Constants { cDefaultBufferSize = 2 * 65536 }

Detailed Description

Represents options of the CDeflateCompressor.

See Also

Compressing Data

CZipArchive::SetCompressionOptions

Member Function Documentation

CZipCompressor::COptions* ZipArchiveLib::CDeflateCompressor::COptions::Clone ( ) const

inlinevirtual

Clones the current options object.

Returns

The cloned object of the same type as the current object.

Implements CZipCompressor::COptions.

int ZipArchiveLib::CDeflateCompressor::COptions::GetType ( ) const

inlinevirtual

Returns the type of the compressor to which the current options apply.

Returns

The type of the compressor. It can be one of the CompressorType values.

Implements CZipCompressor::COptions.

Member Data Documentation

bool ZipArchiveLib::CDeflateCompressor::COptions::m_bCheckLastBlock

Enables or disables checking, if the compressed data ends with an end-of-stream block. This should be enabled to protect against malformed data. true, if the checking of the last block should be enabled; false otherwise.

bool ZipArchiveLib::CDeflateCompressor::COptions::m_bCreateOffsetsArray

Specifies whether the CZipCompressor::COffsetsArray is created while creating synchronization blocks. true, if the offsets array should be created; false otherwise.

Note

Normally, this value should be always set to true.

See Also

Creating Seekable Compressed Data

CDeflateCompressor::GetOffsetsArray

m_iSyncRatio

int ZipArchiveLib::CDeflateCompressor::COptions::m_iSyncRatio

Determines how often synchronization blocks are created.

• 0 - disables creation of synchronization blocks,
• the larger the value, the rarer the synchronization blocks are created and the better the compression ratio is.

Note

This setting has no effect on stored or encrypted data. The synchronization blocks will not be created in these cases regardless of the value set.

You can use CZipCompressor::COffsetsArray::GetStatistics to determine the best value.

See Also

Creating Seekable Compressed Data

m_bCreateOffsetsArray

CDeflateCompressor::GetOffsetsArray

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

• DeflateCompressor.h