113 lines
4.4 KiB
C++
113 lines
4.4 KiB
C++
#ifndef CRYPTOPP_FILES_H
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#define CRYPTOPP_FILES_H
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#include "cryptlib.h"
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#include "filters.h"
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#include "argnames.h"
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#include <iostream>
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#include <fstream>
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NAMESPACE_BEGIN(CryptoPP)
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//! file-based implementation of Store interface
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class CRYPTOPP_DLL FileStore : public Store, private FilterPutSpaceHelper, public NotCopyable
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{
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public:
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class Err : public Exception
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{
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public:
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Err(const std::string &s) : Exception(IO_ERROR, s) {}
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};
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class OpenErr : public Err {public: OpenErr(const std::string &filename) : Err("FileStore: error opening file for reading: " + filename) {}};
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class ReadErr : public Err {public: ReadErr() : Err("FileStore: error reading file") {}};
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FileStore() : m_stream(NULL) {}
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FileStore(std::istream &in)
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{StoreInitialize(MakeParameters(Name::InputStreamPointer(), &in));}
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FileStore(const char *filename)
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{StoreInitialize(MakeParameters(Name::InputFileName(), filename));}
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#if defined(CRYPTOPP_UNIX_AVAILABLE) || _MSC_VER >= 1400
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//! specify file with Unicode name. On non-Windows OS, this function assumes that setlocale() has been called.
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FileStore(const wchar_t *filename)
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{StoreInitialize(MakeParameters(Name::InputFileNameWide(), filename));}
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#endif
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std::istream* GetStream() {return m_stream;}
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lword MaxRetrievable() const;
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size_t TransferTo2(BufferedTransformation &target, lword &transferBytes, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true);
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size_t CopyRangeTo2(BufferedTransformation &target, lword &begin, lword end=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true) const;
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lword Skip(lword skipMax=ULONG_MAX);
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private:
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void StoreInitialize(const NameValuePairs ¶meters);
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member_ptr<std::ifstream> m_file;
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std::istream *m_stream;
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byte *m_space;
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size_t m_len;
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bool m_waiting;
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};
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//! file-based implementation of Source interface
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class CRYPTOPP_DLL FileSource : public SourceTemplate<FileStore>
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{
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public:
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typedef FileStore::Err Err;
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typedef FileStore::OpenErr OpenErr;
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typedef FileStore::ReadErr ReadErr;
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FileSource(BufferedTransformation *attachment = NULL)
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: SourceTemplate<FileStore>(attachment) {}
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FileSource(std::istream &in, bool pumpAll, BufferedTransformation *attachment = NULL)
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: SourceTemplate<FileStore>(attachment) {SourceInitialize(pumpAll, MakeParameters(Name::InputStreamPointer(), &in));}
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FileSource(const char *filename, bool pumpAll, BufferedTransformation *attachment = NULL, bool binary=true)
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: SourceTemplate<FileStore>(attachment) {SourceInitialize(pumpAll, MakeParameters(Name::InputFileName(), filename)(Name::InputBinaryMode(), binary));}
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#if defined(CRYPTOPP_UNIX_AVAILABLE) || _MSC_VER >= 1400
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//! specify file with Unicode name. On non-Windows OS, this function assumes that setlocale() has been called.
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FileSource(const wchar_t *filename, bool pumpAll, BufferedTransformation *attachment = NULL, bool binary=true)
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: SourceTemplate<FileStore>(attachment) {SourceInitialize(pumpAll, MakeParameters(Name::InputFileNameWide(), filename)(Name::InputBinaryMode(), binary));}
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#endif
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std::istream* GetStream() {return m_store.GetStream();}
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};
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//! file-based implementation of Sink interface
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class CRYPTOPP_DLL FileSink : public Sink, public NotCopyable
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{
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public:
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class Err : public Exception
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{
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public:
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Err(const std::string &s) : Exception(IO_ERROR, s) {}
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};
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class OpenErr : public Err {public: OpenErr(const std::string &filename) : Err("FileSink: error opening file for writing: " + filename) {}};
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class WriteErr : public Err {public: WriteErr() : Err("FileSink: error writing file") {}};
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FileSink() : m_stream(NULL) {}
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FileSink(std::ostream &out)
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{IsolatedInitialize(MakeParameters(Name::OutputStreamPointer(), &out));}
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FileSink(const char *filename, bool binary=true)
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{IsolatedInitialize(MakeParameters(Name::OutputFileName(), filename)(Name::OutputBinaryMode(), binary));}
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#if defined(CRYPTOPP_UNIX_AVAILABLE) || _MSC_VER >= 1400
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//! specify file with Unicode name. On non-Windows OS, this function assumes that setlocale() has been called.
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FileSink(const wchar_t *filename, bool binary=true)
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{IsolatedInitialize(MakeParameters(Name::OutputFileNameWide(), filename)(Name::OutputBinaryMode(), binary));}
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#endif
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std::ostream* GetStream() {return m_stream;}
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void IsolatedInitialize(const NameValuePairs ¶meters);
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size_t Put2(const byte *inString, size_t length, int messageEnd, bool blocking);
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bool IsolatedFlush(bool hardFlush, bool blocking);
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private:
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member_ptr<std::ofstream> m_file;
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std::ostream *m_stream;
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};
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NAMESPACE_END
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#endif
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