Implementation of Store interface. More...

#include <files.h>

Inheritance diagram for FileStore:

Collaboration diagram for FileStore:

Classes
class	Err
	Exception thrown when file-based error is encountered. More...

class	OpenErr
	Exception thrown when file-based open error is encountered. More...

class	ReadErr
	Exception thrown when file-based read error is encountered. More...

Public Member Functions
	FileStore ()
	Construct a FileStore. More...

	FileStore (std::istream &in)
	Construct a FileStore. More...

	FileStore (const char *filename)
	Construct a FileStore. More...

std::istream *	GetStream ()
	Retrieves the internal stream. More...

lword	MaxRetrievable () const
	Provides the number of bytes ready for retrieval. More...

size_t	TransferTo2 (BufferedTransformation &target, lword &transferBytes, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true)
	Transfer bytes from this object to another BufferedTransformation. More...

size_t	CopyRangeTo2 (BufferedTransformation &target, lword &begin, lword end=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true) const
	Copy bytes from this object to another BufferedTransformation. More...

lword	Skip (lword skipMax=ULONG_MAX)
	Discard skipMax bytes from the output buffer. More...

Public Member Functions inherited from Store
	Store ()
	Construct a Store. More...

void	IsolatedInitialize (const NameValuePairs &parameters)
	Initialize or reinitialize this object, without signal propagation. More...

unsigned int	NumberOfMessages () const
	Provides the number of meesages processed by this object. More...

bool	GetNextMessage ()
	Start retrieving the next message. More...

unsigned int	CopyMessagesTo (BufferedTransformation &target, unsigned int count=UINT_MAX, const std::string &channel=DEFAULT_CHANNEL) const

Public Member Functions inherited from AutoSignaling< InputRejecting< BufferedTransformation > >
	AutoSignaling (int propagation=-1)
	Construct an AutoSignaling. More...

void	SetAutoSignalPropagation (int propagation)

int	GetAutoSignalPropagation () const

Public Member Functions inherited from InputRejecting< BufferedTransformation >
size_t	Put2 (const byte *inString, size_t length, int messageEnd, bool blocking)
	Input a byte array for processing. More...

bool	IsolatedFlush (bool hardFlush, bool blocking)

bool	IsolatedMessageSeriesEnd (bool blocking)

size_t	ChannelPut2 (const std::string &channel, const byte *inString, size_t length, int messageEnd, bool blocking)

bool	ChannelMessageSeriesEnd (const std::string &channel, int messageEnd, bool blocking)

Public Member Functions inherited from BufferedTransformation
virtual	~BufferedTransformation ()

	BufferedTransformation ()
	Construct a BufferedTransformation. More...

BufferedTransformation &	Ref ()
	Provides a reference to this object. More...

size_t	Put (byte inByte, bool blocking=true)
	Input a byte for processing. More...

size_t	Put (const byte *inString, size_t length, bool blocking=true)
	Input a byte buffer for processing. More...

size_t	PutWord16 (word16 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true)
	Input a 16-bit word for processing. More...

size_t	PutWord32 (word32 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true)
	Input a 32-bit word for processing. More...

virtual byte *	CreatePutSpace (size_t &size)
	Request space which can be written into by the caller. More...

virtual bool	CanModifyInput () const
	Determines whether input can be modified by the callee. More...

size_t	PutModifiable (byte *inString, size_t length, bool blocking=true)
	Input multiple bytes that may be modified by callee. More...

bool	MessageEnd (int propagation=-1, bool blocking=true)
	Signals the end of messages to the object. More...

size_t	PutMessageEnd (const byte *inString, size_t length, int propagation=-1, bool blocking=true)
	Input multiple bytes for processing and signal the end of a message. More...

virtual size_t	PutModifiable2 (byte *inString, size_t length, int messageEnd, bool blocking)
	Input multiple bytes that may be modified by callee. More...

unsigned int	GetMaxWaitObjectCount () const
	Retrieves the maximum number of waitable objects. More...

void	GetWaitObjects (WaitObjectContainer &container, CallStack const &callStack)
	Retrieves waitable objects. More...

virtual void	Initialize (const NameValuePairs &parameters=g_nullNameValuePairs, int propagation=-1)
	Initialize or reinitialize this object, with signal propagation. More...

virtual bool	Flush (bool hardFlush, int propagation=-1, bool blocking=true)
	Flush buffered input and/or output, with signal propagation. More...

virtual bool	MessageSeriesEnd (int propagation=-1, bool blocking=true)
	Marks the end of a series of messages, with signal propagation. More...

virtual bool	AnyRetrievable () const
	Determines whether bytes are ready for retrieval. More...

virtual size_t	Get (byte &outByte)
	Retrieve a 8-bit byte. More...

virtual size_t	Get (byte *outString, size_t getMax)
	Retrieve a block of bytes. More...

virtual size_t	Peek (byte &outByte) const
	Peek a 8-bit byte. More...

virtual size_t	Peek (byte *outString, size_t peekMax) const
	Peek a block of bytes. More...

size_t	GetWord16 (word16 &value, ByteOrder order=BIG_ENDIAN_ORDER)
	Retrieve a 16-bit word. More...

size_t	GetWord32 (word32 &value, ByteOrder order=BIG_ENDIAN_ORDER)
	Retrieve a 32-bit word. More...

size_t	PeekWord16 (word16 &value, ByteOrder order=BIG_ENDIAN_ORDER) const
	Peek a 16-bit word. More...

size_t	PeekWord32 (word32 &value, ByteOrder order=BIG_ENDIAN_ORDER) const
	Peek a 32-bit word. More...

lword	TransferTo (BufferedTransformation &target, lword transferMax=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL)
	move transferMax bytes of the buffered output to target as input More...

lword	CopyTo (BufferedTransformation &target, lword copyMax=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL) const
	copy copyMax bytes of the buffered output to target as input More...

lword	CopyRangeTo (BufferedTransformation &target, lword position, lword copyMax=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL) const
	Copy bytes from this object using an index to another BufferedTransformation. More...

virtual lword	TotalBytesRetrievable () const
	Provides the number of bytes ready for retrieval. More...

virtual bool	AnyMessages () const
	Determines if any messages are available for retrieval. More...

virtual unsigned int	SkipMessages (unsigned int count=UINT_MAX)
	Skip a number of meessages. More...

unsigned int	TransferMessagesTo (BufferedTransformation &target, unsigned int count=UINT_MAX, const std::string &channel=DEFAULT_CHANNEL)
	Transfer messages from this object to another BufferedTransformation. More...

unsigned int	CopyMessagesTo (BufferedTransformation &target, unsigned int count=UINT_MAX, const std::string &channel=DEFAULT_CHANNEL) const
	Copy messages from this object to another BufferedTransformation. More...

virtual void	SkipAll ()
	Skip all messages in the series. More...

void	TransferAllTo (BufferedTransformation &target, const std::string &channel=DEFAULT_CHANNEL)
	Transfer all bytes from this object to another BufferedTransformation. More...

void	CopyAllTo (BufferedTransformation &target, const std::string &channel=DEFAULT_CHANNEL) const
	Copy messages from this object to another BufferedTransformation. More...

virtual bool	GetNextMessageSeries ()
	Retrieve the next message in a series. More...

virtual unsigned int	NumberOfMessagesInThisSeries () const
	Provides the number of messages in a series. More...

virtual unsigned int	NumberOfMessageSeries () const
	Provides the number of messages in a series. More...

size_t	TransferMessagesTo2 (BufferedTransformation &target, unsigned int &messageCount, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true)
	Transfer messages from this object to another BufferedTransformation. More...

size_t	TransferAllTo2 (BufferedTransformation &target, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true)
	Transfer all bytes from this object to another BufferedTransformation. More...

size_t	ChannelPut (const std::string &channel, byte inByte, bool blocking=true)
	Input a byte for processing on a channel. More...

size_t	ChannelPut (const std::string &channel, const byte *inString, size_t length, bool blocking=true)
	Input a byte buffer for processing on a channel. More...

size_t	ChannelPutModifiable (const std::string &channel, byte *inString, size_t length, bool blocking=true)
	Input multiple bytes that may be modified by callee on a channel. More...

size_t	ChannelPutWord16 (const std::string &channel, word16 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true)
	Input a 16-bit word for processing on a channel. More...

size_t	ChannelPutWord32 (const std::string &channel, word32 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true)
	Input a 32-bit word for processing on a channel. More...

bool	ChannelMessageEnd (const std::string &channel, int propagation=-1, bool blocking=true)
	Signal the end of a message. More...

size_t	ChannelPutMessageEnd (const std::string &channel, const byte *inString, size_t length, int propagation=-1, bool blocking=true)
	Input multiple bytes for processing and signal the end of a message. More...

virtual byte *	ChannelCreatePutSpace (const std::string &channel, size_t &size)
	Request space which can be written into by the caller. More...

virtual size_t	ChannelPutModifiable2 (const std::string &channel, byte *inString, size_t length, int messageEnd, bool blocking)
	Input multiple bytes that may be modified by callee on a channel. More...

virtual bool	ChannelFlush (const std::string &channel, bool hardFlush, int propagation=-1, bool blocking=true)
	Flush buffered input and/or output on a channel. More...

virtual void	SetRetrievalChannel (const std::string &channel)
	Sets the default retrieval channel. More...

virtual bool	Attachable ()
	Determines whether the object allows attachment. More...

virtual BufferedTransformation *	AttachedTransformation ()
	Returns the object immediately attached to this object. More...

virtual const BufferedTransformation *	AttachedTransformation () const
	Returns the object immediately attached to this object. More...

virtual void	Detach (BufferedTransformation *newAttachment=0)
	Delete the current attachment chain and attach a new one. More...

virtual void	Attach (BufferedTransformation *newAttachment)
	Add newAttachment to the end of attachment chain. More...

Public Member Functions inherited from Algorithm
virtual	~Algorithm ()

	Algorithm (bool checkSelfTestStatus=true)
	Interface for all crypto algorithms. More...

virtual std::string	AlgorithmName () const
	Provides the name of this algorithm. More...

Public Member Functions inherited from Clonable
virtual	~Clonable ()

virtual Clonable *	Clone () const
	Copies this object. More...

Public Member Functions inherited from Waitable
virtual	~Waitable ()

bool	Wait (unsigned long milliseconds, CallStack const &callStack)
	Wait on this object. More...

Public Member Functions inherited from NotCopyable
	NotCopyable ()

Private Member Functions
void	StoreInitialize (const NameValuePairs &parameters)

Private Member Functions inherited from FilterPutSpaceHelper
virtual	~FilterPutSpaceHelper ()

byte *	HelpCreatePutSpace (BufferedTransformation &target, const std::string &channel, size_t minSize, size_t desiredSize, size_t &bufferSize)
	Create a working space in a BufferedTransformation. More...

byte *	HelpCreatePutSpace (BufferedTransformation &target, const std::string &channel, size_t minSize)
	Create a working space in a BufferedTransformation. More...

byte *	HelpCreatePutSpace (BufferedTransformation &target, const std::string &channel, size_t minSize, size_t bufferSize)
	Create a working space in a BufferedTransformation. More...

Private Attributes
member_ptr< std::ifstream >	m_file

std::istream *	m_stream

byte *	m_space

size_t	m_len

bool	m_waiting

Private Attributes inherited from FilterPutSpaceHelper
SecByteBlock	m_tempSpace
	Temporay working space. More...

Additional Inherited Members
Static Public Attributes inherited from BufferedTransformation
static const std::string &	NULL_CHANNEL = DEFAULT_CHANNEL

Static Protected Member Functions inherited from BufferedTransformation
static int	DecrementPropagation (int propagation)
	Decrements the propagation count while clamping at 0. More...

Protected Attributes inherited from Store
bool	m_messageEnd

Detailed Description

Implementation of Store interface.

file-based implementation of Store interface

Definition at line 23 of file files.h.

Constructor & Destructor Documentation

FileStore::FileStore ( )

inline

Construct a FileStore.

Definition at line 38 of file files.h.

FileStore::FileStore ( std::istream & in )

inline

Construct a FileStore.

Parameters

in	an existing stream

Definition at line 42 of file files.h.

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FileStore::FileStore ( const char * filename )

inline

Construct a FileStore.

Parameters

filename the narrow name of the file to open

Definition at line 47 of file files.h.

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Member Function Documentation

size_t FileStore::CopyRangeTo2	(	BufferedTransformation &	target,
		lword &	begin,
		lword	end = `LWORD_MAX`,
		const std::string &	channel = `DEFAULT_CHANNEL`,
		bool	blocking = `true`
	)		const

virtual

Copy bytes from this object to another BufferedTransformation.

Parameters

target	the destination BufferedTransformation
begin	the 0-based index of the first byte to copy in the stream
end	the 0-based index of the last byte to copy in the stream
channel	the channel on which the transfer should occur
blocking	specifies whether the object should block when processing input

Returns: the number of bytes that remain in the copy block (i.e., bytes not copied)

CopyRangeTo2 copies bytes from this object to the destination. The bytes are not removed from this object. Copying begins at the index position in the current stream, and not from an absolute position in the stream.

begin is an IN and OUT parameter. When the call is made, begin is the starting position of the copy. When the call returns, begin is the position of the first byte that was not copied (which may be different tahn end). begin can be used for subsequent calls to CopyRangeTo2.

Implements BufferedTransformation.

Definition at line 113 of file files.cpp.

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std::istream* FileStore::GetStream ( )

inline

Retrieves the internal stream.

Returns: the internal stream pointer

Definition at line 60 of file files.h.

lword FileStore::MaxRetrievable ( ) const

virtual

Provides the number of bytes ready for retrieval.

Returns: the number of bytes ready for retrieval

All retrieval functions return the actual number of bytes retrieved, which is the lesser of the request number and MaxRetrievable()

Reimplemented from BufferedTransformation.

Definition at line 63 of file files.cpp.

lword FileStore::Skip ( lword skipMax = ULONG_MAX )

virtual

Discard skipMax bytes from the output buffer.

Parameters

skipMax the number of bytes to discard

Skip() discards bytes from the output buffer, which is the AttachedTransformation(), if present. The function always returns the parameter skipMax.

If you want to skip bytes from a Source, then perform the following.

    StringSource ss(str, false, new Redirector(TheBitBucket()));
    ss.Pump(10);    // Skip 10 bytes from Source
    ss.Detach(new FilterChain(...));
    ss.PumpAll();

Reimplemented from BufferedTransformation.

Definition at line 166 of file files.cpp.

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void FileStore::StoreInitialize ( const NameValuePairs & parameters )

privatevirtual

Implements Store.

Definition at line 22 of file files.cpp.

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size_t FileStore::TransferTo2	(	BufferedTransformation &	target,
		lword &	byteCount,
		const std::string &	channel = `DEFAULT_CHANNEL`,
		bool	blocking = `true`
	)

virtual

Transfer bytes from this object to another BufferedTransformation.

Parameters

target	the destination BufferedTransformation
byteCount	the number of bytes to transfer
channel	the channel on which the transfer should occur
blocking	specifies whether the object should block when processing input

Returns: the number of bytes that remain in the transfer block (i.e., bytes not transferred)

TransferTo() removes bytes from this object and moves them to the destination. Transfer begins at the index position in the current stream, and not from an absolute position in the stream.

byteCount is an IN and OUT parameter. When the call is made, byteCount is the requested size of the transfer. When the call returns, byteCount is the number of bytes that were transferred.

Implements BufferedTransformation.

Definition at line 74 of file files.cpp.

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Member Data Documentation

member_ptr<std::ifstream> FileStore::m_file

private

Definition at line 70 of file files.h.

size_t FileStore::m_len

private

Definition at line 73 of file files.h.

byte* FileStore::m_space

private

Definition at line 72 of file files.h.

std::istream* FileStore::m_stream

private

Definition at line 71 of file files.h.

bool FileStore::m_waiting

private

Definition at line 74 of file files.h.

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

src/cryptopp/files.h
src/cryptopp/files.cpp

Classes

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation