lemur::file::File Class Reference

Provide single file interface file date stored in multiple segment files on disk. Keeps each segment size below 2GB for OSes without large file support. More...

#include <File.hpp>

List of all members.

Public Types
typedef INT64	offset_type
typedef FILE_OFFSET	library_offset_type
Public Member Functions
	File ()
	~File ()
void	open (const std::string &fileName, int mode)
void	close ()
void	read (void *buffer, offset_type count)
void	write (const void *buffer, offset_type count)
void	seekg (offset_type relativePosition, std::fstream::seekdir direction)
void	seekp (offset_type relativePosition, std::fstream::seekdir direction)
offset_type	tellg ()
offset_type	tellp ()
offset_type	gcount ()
int	rdstate ()
offset_type	size () const
void	unlink ()
Static Public Member Functions
void	unlink (const std::string &fileName)
void	rename (const std::string &oldName, const std::string &newName)
Private Member Functions
void	_appendSegment ()
offset_type	_absolutePosition (offset_type relativePosition, offset_type currentPosition, std::fstream::seekdir direction) const
FileSegment *	_segmentForPosition (offset_type absolutePosition, FileSegment *guess)
void	_validateReadPointer ()
void	_validateWritePointer ()
Static Private Member Functions
std::string	segmentName (const std::string &fileName, int segment)
Private Attributes
std::string	_fileName
std::vector< FileSegment * >	_segments
FileSegment *	_readSegment
FileSegment *	_writeSegment
offset_type	_readPosition
offset_type	_writePosition
offset_type	_readCount
bool	_readPointerValid
bool	_writePointerValid
int	_mode
int	_state

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Detailed Description

Provide single file interface file date stored in multiple segment files on disk. Keeps each segment size below 2GB for OSes without large file support.

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Member Typedef Documentation

typedef FILE_OFFSET lemur::file::File::library_offset_type

typedef INT64 lemur::file::File::offset_type

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Constructor & Destructor Documentation

lemur::file::File::File (   )

lemur::file::File::~File (   )

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Member Function Documentation

lemur::file::File::offset_type lemur::file::File::_absolutePosition (  offset_type  relativePosition, offset_type  currentPosition, std::fstream::seekdir  direction )  const [private]

void lemur::file::File::_appendSegment (   )  [private]

lemur::file::File::FileSegment * lemur::file::File::_segmentForPosition (  offset_type  absolutePosition, FileSegment *  guess )  [private]

void lemur::file::File::_validateReadPointer (   )  [private]

void lemur::file::File::_validateWritePointer (   )  [private]

void lemur::file::File::close (   )

lemur::file::File::offset_type lemur::file::File::gcount (   )

void lemur::file::File::open (  const std::string &  fileName, int  mode )

int lemur::file::File::rdstate (   )

void lemur::file::File::read (  void *  buffer, offset_type  count )

void lemur::file::File::rename (  const std::string &  oldName, const std::string &  newName )  [static]

void lemur::file::File::seekg (  offset_type  relativePosition, std::fstream::seekdir  direction )

void lemur::file::File::seekp (  offset_type  relativePosition, std::fstream::seekdir  direction )

std::string lemur::file::File::segmentName (  const std::string &  fileName, int  segment )  [static, private]

Provide single file interface file date stored in multiple segment files on disk. Keeps each segment size below 2GB for OSes without large file support.

lemur::file::File::offset_type lemur::file::File::size (   )  const

lemur::file::File::offset_type lemur::file::File::tellg (   )

lemur::file::File::offset_type lemur::file::File::tellp (   )

void lemur::file::File::unlink (  const std::string &  fileName  )  [static]

void lemur::file::File::unlink (   )

void lemur::file::File::write (  const void *  buffer, offset_type  count )

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Member Data Documentation

std::string lemur::file::File::_fileName [private]

int lemur::file::File::_mode [private]

offset_type lemur::file::File::_readCount [private]

bool lemur::file::File::_readPointerValid [private]

offset_type lemur::file::File::_readPosition [private]

FileSegment* lemur::file::File::_readSegment [private]

std::vector<FileSegment*> lemur::file::File::_segments [private]

int lemur::file::File::_state [private]

bool lemur::file::File::_writePointerValid [private]

offset_type lemur::file::File::_writePosition [private]

FileSegment* lemur::file::File::_writeSegment [private]

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

• File.hpp
• File.cpp

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