CZipCompressor::COffsetsArray Class Reference

#include <ZipCompressor.h>

Inheritance diagram for CZipCompressor::COffsetsArray:

Classes
struct	CStat

Public Member Functions
void	Clear ()
COffsetsPair *	FindMax (ZIP_SIZE_TYPE offset, bool uncompressed=true)
COffsetsPair *	FindMin (ZIP_SIZE_TYPE offset, bool uncompressed=true)
CStat	GetStatistics () const
void	Load (const CZipAutoBuffer &buffer)
void	Save (CZipAutoBuffer &buffer) const

Detailed Description

The array of offsets pairs produced during creating a seekable compressed data.

See also

Creating Seekable Compressed Data

COffsetsPair

Member Function Documentation

Clear()

void CZipCompressor::COffsetsArray::Clear

(

)

Removes all elements from the array.

FindMax()

COffsetsPair * CZipCompressor::COffsetsArray::FindMax	(	ZIP_SIZE_TYPE	offset,
		bool	uncompressed = true )

Finds the maximum offset not larger than the offset argument.

Parameters

offset	The maximum offset to look for.
uncompressed	true to look for the offset in uncompressed data (COffsetsPair::m_uUncompressedOffset); false to look for the offset in compressed data (COffsetsPair::m_uCompressedOffset).

See also

FindMin

FindMin()

COffsetsPair * CZipCompressor::COffsetsArray::FindMin	(	ZIP_SIZE_TYPE	offset,
		bool	uncompressed = true )

Finds the minimum offset not smaller than the offset argument.

Parameters

offset	The minimum offset to look for.
uncompressed	true to look for the offset in uncompressed data (COffsetsPair::m_uUncompressedOffset); false to look for the offset in compressed data (COffsetsPair::m_uCompressedOffset).

See also

FindMax

GetStatistics()

CStat CZipCompressor::COffsetsArray::GetStatistics

(

)

const

Returns the statistics about the blocks in compressed and uncompressed data.

Returns

The CStat object describing statistics.

Note

These values can help you in determining the required synchronization ratio.

See also

Creating Seekable Compressed Data

CStat

COffsetsPair

Load()

void CZipCompressor::COffsetsArray::Load

(

const CZipAutoBuffer &

buffer

)

Loads the previously saved array from the buffer.

Parameters

buffer

The buffer to load the array from.

Note

If the array was saved using 8 bytes offsets, you won't be able to load it with the ZipArchive Library compiled without the Zip64 support.

See also

Creating Seekable Compressed Data

Zip64 Format: Crossing the Limits of File Sizes and Number of Files and Segments

Save

Save()

void CZipCompressor::COffsetsArray::Save

(

CZipAutoBuffer &

buffer

)

const

Saves the array into the buffer. If possible, the method uses 4 bytes for offsets, otherwise 8 bytes are used but only when Zip64 is enabled.

Parameters

buffer

The buffer to save the array into.

Note

If the array is saved using 8 bytes offsets, you won't be able to load it with the ZipArchive Library compiled without the Zip64 support.

See also

Creating Seekable Compressed Data

Zip64 Format: Crossing the Limits of File Sizes and Number of Files and Segments

Load

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

• ZipCompressor.h