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#ifndef CRYPTOPP_FILES_H
#define CRYPTOPP_FILES_H
#include "cryptlib.h"
#include "filters.h"
#include "argnames.h"
#include <iostream>
#include <fstream>
NAMESPACE_BEGIN(CryptoPP)
//! file-based implementation of Store interface
class CRYPTOPP_DLL FileStore : public Store, private FilterPutSpaceHelper, public NotCopyable
{
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(Name::InputStreamPointer(), &in));}
FileStore(const char *filename)
{StoreInitialize(MakeParameters(Name::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;
unsigned long Skip(unsigned long skipMax=ULONG_MAX);
private:
void StoreInitialize(const NameValuePairs ¶meters);
member_ptr<std::ifstream> m_file;
std::istream *m_stream;
byte *m_space;
unsigned int m_len;
bool m_waiting;
};
//! file-based implementation of Source interface
class CRYPTOPP_DLL 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(Name::InputStreamPointer(), &in));}
FileSource(const char *filename, bool pumpAll, BufferedTransformation *attachment = NULL, bool binary=true)
: SourceTemplate<FileStore>(attachment) {SourceInitialize(pumpAll, MakeParameters(Name::InputFileName(), filename)(Name::InputBinaryMode(), binary));}
std::istream* GetStream() {return m_store.GetStream();}
};
//! file-based implementation of Sink interface
class CRYPTOPP_DLL FileSink : public Sink, public NotCopyable
{
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(Name::OutputStreamPointer(), &out));}
FileSink(const char *filename, bool binary=true)
{IsolatedInitialize(MakeParameters(Name::OutputFileName(), filename)("OutputBinaryMode", binary));}
std::ostream* GetStream() {return m_stream;}
void IsolatedInitialize(const NameValuePairs ¶meters);
unsigned int Put2(const byte *inString, unsigned int length, int messageEnd, bool blocking);
bool IsolatedFlush(bool hardFlush, bool blocking);
private:
member_ptr<std::ofstream> m_file;
std::ostream *m_stream;
};
NAMESPACE_END
#endif
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