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//
// Base32Decoder.h
//
// Library: Foundation
// Package: Streams
// Module: Base32
//
// Definition of class Base32Decoder.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Foundation_Base32Decoder_INCLUDED
#define Foundation_Base32Decoder_INCLUDED
#include "Poco/Foundation.h"
#include "Poco/UnbufferedStreamBuf.h"
#include <istream>
namespace Poco {
class Foundation_API Base32DecoderBuf: public UnbufferedStreamBuf
/// This streambuf base32-decodes all data read
/// from the istream connected to it.
///
/// Note: For performance reasons, the characters
/// are read directly from the given istream's
/// underlying streambuf, so the state
/// of the istream will not reflect that of
/// its streambuf.
{
public:
Base32DecoderBuf(std::istream& istr);
~Base32DecoderBuf();
private:
int readFromDevice();
int readOne();
unsigned char _group[8];
int _groupLength;
int _groupIndex;
std::streambuf& _buf;
static unsigned char IN_ENCODING[256];
static bool IN_ENCODING_INIT;
private:
Base32DecoderBuf(const Base32DecoderBuf&);
Base32DecoderBuf& operator = (const Base32DecoderBuf&);
};
class Foundation_API Base32DecoderIOS: public virtual std::ios
/// The base class for Base32Decoder.
///
/// This class is needed to ensure the correct initialization
/// order of the stream buffer and base classes.
{
public:
Base32DecoderIOS(std::istream& istr);
~Base32DecoderIOS();
Base32DecoderBuf* rdbuf();
protected:
Base32DecoderBuf _buf;
private:
Base32DecoderIOS(const Base32DecoderIOS&);
Base32DecoderIOS& operator = (const Base32DecoderIOS&);
};
class Foundation_API Base32Decoder: public Base32DecoderIOS, public std::istream
/// This istream base32-decodes all data
/// read from the istream connected to it.
///
/// Note: For performance reasons, the characters
/// are read directly from the given istream's
/// underlying streambuf, so the state
/// of the istream will not reflect that of
/// its streambuf.
{
public:
Base32Decoder(std::istream& istr);
~Base32Decoder();
private:
Base32Decoder(const Base32Decoder&);
Base32Decoder& operator = (const Base32Decoder&);
};
} // namespace Poco
#endif // Foundation_Base32Decoder_INCLUDED
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