Initial revision

1 files changed, 97 insertions, 0 deletions

diff --git a/files.h b/files.h
new file mode 100644
index 00000000..30f8dd68
--- /dev/null
+++ b/files.h
@@ -0,0 +1,97 @@
+#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 Peek(byte &outByte) 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