#ifndef CRYPTOPP_FILES_H#define CRYPTOPP_FILES_H#include "cryptlib.h"#include "filters.h"#include <iostream>#include <fstream>NAMESPACE_BEGIN(CryptoPP)//! .class FileStore : public Store, private FilterPutSpaceHelper{public:	class Err : public Exception	{	public:		Err(const std::string &s) : Exception(IO_ERROR, s) {}	};	class OpenErr : public Err {public: OpenErr(const std::string &filename) : Err("FileStore: error opening file for reading: " + filename) {}};	class ReadErr : public Err {public: ReadErr() : Err("FileStore: error reading file") {}};	FileStore() : m_stream(NULL) {}	FileStore(std::istream &in)		{StoreInitialize(MakeParameters("InputStreamPointer", &in));}	FileStore(const char *filename)		{StoreInitialize(MakeParameters("InputFileName", filename));}	std::istream* GetStream() {return m_stream;}	unsigned long MaxRetrievable() const;	unsigned int TransferTo2(BufferedTransformation &target, unsigned long &transferBytes, const std::string &channel=NULL_CHANNEL, bool blocking=true);	unsigned int CopyRangeTo2(BufferedTransformation &target, unsigned long &begin, unsigned long end=ULONG_MAX, const std::string &channel=NULL_CHANNEL, bool blocking=true) const;private:	void StoreInitialize(const NameValuePairs &parameters);		std::ifstream m_file;	std::istream *m_stream;	byte *m_space;	unsigned int m_len;	bool m_waiting;};//! .class FileSource : public SourceTemplate<FileStore>{public:	typedef FileStore::Err Err;	typedef FileStore::OpenErr OpenErr;	typedef FileStore::ReadErr ReadErr;	FileSource(BufferedTransformation *attachment = NULL)		: SourceTemplate<FileStore>(attachment) {}	FileSource(std::istream &in, bool pumpAll, BufferedTransformation *attachment = NULL)		: SourceTemplate<FileStore>(attachment) {SourceInitialize(pumpAll, MakeParameters("InputStreamPointer", &in));}	FileSource(const char *filename, bool pumpAll, BufferedTransformation *attachment = NULL, bool binary=true)		: SourceTemplate<FileStore>(attachment) {SourceInitialize(pumpAll, MakeParameters("InputFileName", filename)("InputBinaryMode", binary));}	std::istream* GetStream() {return m_store.GetStream();}};//! .class FileSink : public Sink{public:	class Err : public Exception	{	public:		Err(const std::string &s) : Exception(IO_ERROR, s) {}	};	class OpenErr : public Err {public: OpenErr(const std::string &filename) : Err("FileSink: error opening file for writing: " + filename) {}};	class WriteErr : public Err {public: WriteErr() : Err("FileSink: error writing file") {}};	FileSink() : m_stream(NULL) {}	FileSink(std::ostream &out)		{IsolatedInitialize(MakeParameters("OutputStreamPointer", &out));}	FileSink(const char *filename, bool binary=true)		{IsolatedInitialize(MakeParameters("OutputFileName", filename)("OutputBinaryMode", binary));}	std::ostream* GetStream() {return m_stream;}	void IsolatedInitialize(const NameValuePairs &parameters);	unsigned int Put2(const byte *inString, unsigned int length, int messageEnd, bool blocking);	bool IsolatedFlush(bool hardFlush, bool blocking);private:	std::ofstream m_file;	std::ostream *m_stream;};NAMESPACE_END#endif