submitted 1.2.0

Foundation/include/Poco/Base64Encoder.h

@@ -0,0 +1,112 @@
+//
+// Base64Encoder.h
+//
+// $Id: //poco/1.2/Foundation/include/Poco/Base64Encoder.h#1 $
+//
+// Library: Foundation
+// Package: Streams
+// Module:  Base64
+//
+// Definition of class Base64Encoder.
+//
+// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+// 
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+
+
+#ifndef Foundation_Base64Encoder_INCLUDED
+#define Foundation_Base64Encoder_INCLUDED
+
+
+#include "Poco/Foundation.h"
+#include "Poco/UnbufferedStreamBuf.h"
+#include <ostream>
+
+
+namespace Poco {
+
+
+class Foundation_API Base64EncoderBuf: public UnbufferedStreamBuf
+	/// This streambuf base64-encodes all data written
+	/// to it and forwards it to a connected
+	/// ostream.
+{
+public:
+	Base64EncoderBuf(std::ostream& ostr);
+	~Base64EncoderBuf();
+	int close();
+	void setLineLength(int lineLength);
+	int getLineLength() const;
+	
+private:
+	int writeToDevice(char c);
+
+	unsigned char _group[3];
+	int           _groupLength;
+	int           _pos;
+	int           _lineLength;
+	std::ostream& _ostr;
+	
+	static const unsigned char OUT_ENCODING[64];
+	
+	friend class Base64DecoderBuf;
+};
+
+
+class Foundation_API Base64EncoderIOS: public virtual std::ios
+	/// The base class for Base64Encoder.
+	///
+	/// This class is needed to ensure the correct initialization
+	/// order of the stream buffer and base classes.
+{
+public:
+	Base64EncoderIOS(std::ostream& ostr);
+	~Base64EncoderIOS();
+	int close();
+	Base64EncoderBuf* rdbuf();
+
+protected:
+	Base64EncoderBuf _buf;
+};
+
+
+class Foundation_API Base64Encoder: public Base64EncoderIOS, public std::ostream
+	/// This ostream base64-encodes all data
+	/// written to it and forwards it to
+	/// a connected ostream.
+	/// Always call close() when done
+	/// writing data, to ensure proper
+	/// completion of the encoding operation.
+{
+public:
+	Base64Encoder(std::ostream& ostr);
+	~Base64Encoder();
+};
+
+
+} // namespace Poco
+
+
+#endif // Foundation_Base64Encoder_INCLUDED