1 files changed, 112 insertions, 0 deletions

diff --git a/CryptoPP/files.h b/CryptoPP/files.h
new file mode 100644
index 000000000..a47e856bf
--- /dev/null
+++ b/CryptoPP/files.h
@@ -0,0 +1,112 @@
+#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));}
+#if defined(CRYPTOPP_UNIX_AVAILABLE) || _MSC_VER >= 1400
+	//! specify file with Unicode name. On non-Windows OS, this function assumes that setlocale() has been called.
+	FileStore(const wchar_t *filename)
+		{StoreInitialize(MakeParameters(Name::InputFileNameWide(), filename));}
+#endif
+
+	std::istream* GetStream() {return m_stream;}
+
+	lword MaxRetrievable() const;
+	size_t TransferTo2(BufferedTransformation &target, lword &transferBytes, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true);
+	size_t CopyRangeTo2(BufferedTransformation &target, lword &begin, lword end=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true) const;
+	lword Skip(lword skipMax=ULONG_MAX);
+
+private:
+	void StoreInitialize(const NameValuePairs &parameters);
+	
+	member_ptr<std::ifstream> m_file;
+	std::istream *m_stream;
+	byte *m_space;
+	size_t 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));}
+#if defined(CRYPTOPP_UNIX_AVAILABLE) || _MSC_VER >= 1400
+	//! specify file with Unicode name. On non-Windows OS, this function assumes that setlocale() has been called.
+	FileSource(const wchar_t *filename, bool pumpAll, BufferedTransformation *attachment = NULL, bool binary=true)
+		: SourceTemplate<FileStore>(attachment) {SourceInitialize(pumpAll, MakeParameters(Name::InputFileNameWide(), filename)(Name::InputBinaryMode(), binary));}
+#endif
+
+	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)(Name::OutputBinaryMode(), binary));}
+#if defined(CRYPTOPP_UNIX_AVAILABLE) || _MSC_VER >= 1400
+	//! specify file with Unicode name. On non-Windows OS, this function assumes that setlocale() has been called.
+	FileSink(const wchar_t *filename, bool binary=true)
+		{IsolatedInitialize(MakeParameters(Name::OutputFileNameWide(), filename)(Name::OutputBinaryMode(), binary));}
+#endif
+
+	std::ostream* GetStream() {return m_stream;}
+
+	void IsolatedInitialize(const NameValuePairs &parameters);
+	size_t Put2(const byte *inString, size_t 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