C# Класс GSF.IO.FileStructure.IndexParser

This class provides passthrough properties for the IndexMapper class as well follows the directions of the Index Mapper to find the data cluster that contains the point in question.

Наследование: IndexMapper

Показать файл Открыть проект Примеры использования класса

Защищенные свойства (Protected)

Свойство	Тип	Описание
DataClusterAddress	uint
FirstIndirectBlockAddress	uint
FourthIndirectBlockAddress	uint
SecondIndirectBlockAddress	uint
ThirdIndirectBlockAddress	uint

Открытые методы

Метод	Описание
ClearIndexCache ( IndexParser mostRecentParser ) : void	Resets the index cache with the information from the supplied mostRecentParser
IndexParser ( SubFileDiskIoSessionPool ioSessions ) : GSF.IO.FileStructure.Media	Creates a new instance of this class.
SetPositionAndLookup ( uint positionIndex ) : void	Determines if the current sector contains the position passed. If not, it updates the current sector to the one that contains the passed position.
VirtualToPhysical ( uint positionIndex ) : uint	This function will also call IndexMapper.MapPosition so after it returns, the current block data will be updated.

Приватные методы

Метод	Описание
GetBlockIndexValue ( uint blockIndex, int offset, BlockType blockType, uint blockBaseIndex ) : uint	This uses the (blockIndex,offset) values to determine what the next block index is. This also has consistency checks to determine if the file is inconsistent (potentially corruption)
UpdateBlockInformation ( ) : void	Looks up the physical/virtual block positions for the address given.

Описание методов

ClearIndexCache() публичный метод

Resets the index cache with the information from the supplied mostRecentParser

public ClearIndexCache ( IndexParser mostRecentParser ) : void
mostRecentParser	IndexParser
Результат	void

IndexParser() публичный метод

Creates a new instance of this class.

public IndexParser ( SubFileDiskIoSessionPool ioSessions ) : GSF.IO.FileStructure.Media
ioSessions	SubFileDiskIoSessionPool	IoSessions to use to read from this disk
Результат	GSF.IO.FileStructure.Media

SetPositionAndLookup() публичный метод

Determines if the current sector contains the position passed. If not, it updates the current sector to the one that contains the passed position.

public SetPositionAndLookup ( uint positionIndex ) : void
positionIndex	uint	The position to navigate to indexed to the block data block size.
Результат	void

VirtualToPhysical() публичный метод

This function will also call IndexMapper.MapPosition so after it returns, the current block data will be updated.

public VirtualToPhysical ( uint positionIndex ) : uint
positionIndex	uint	The virtual index address.
Результат	uint

Описание свойств

DataClusterAddress защищенное свойство

The address of the first block of the data cluster.

protected uint DataClusterAddress
Результат	uint

FirstIndirectBlockAddress защищенное свойство

The address of the first indirect block

protected uint FirstIndirectBlockAddress
Результат	uint

FourthIndirectBlockAddress защищенное свойство

The address of the third indirect block

protected uint FourthIndirectBlockAddress
Результат	uint

SecondIndirectBlockAddress защищенное свойство

The address of the second indirect block

protected uint SecondIndirectBlockAddress
Результат	uint

ThirdIndirectBlockAddress защищенное свойство

The address of the third indirect block

protected uint ThirdIndirectBlockAddress
Результат	uint