base64encoder.h

This software aims to create an applet and panel tools to manage a wireless interface card, such as

//
// Base64Encoder.h
//
// $Id: //poco/Main/Foundation/include/Foundation/Base64Encoder.h#5 $
//
// Definition of class Base64Encoder.
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
// 
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//


#ifndef Foundation_Base64Encoder_INCLUDED
#define Foundation_Base64Encoder_INCLUDED


#ifndef Foundation_Foundation_INCLUDED
#include "Foundation/Foundation.h"
#endif
#ifndef Foundation_UnbufferedStreamBuf_INCLUDED
#include "Foundation/UnbufferedStreamBuf.h"
#endif
#ifndef STD_OSTREAM_INCLUDED
#include <ostream>
#define STD_OSTREAM_INCLUDED
#endif


Foundation_BEGIN


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();
};


Foundation_END


#endif // Foundation_Base64Encoder_INCLUDED