mirror of
https://github.com/pocoproject/poco.git
synced 2025-11-04 04:09:57 +01:00
107 lines
2.4 KiB
C++
107 lines
2.4 KiB
C++
//
|
|
// 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.
|
|
///
|
|
/// The class implements RFC 4648 - https://tools.ietf.org/html/rfc4648
|
|
///
|
|
/// 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
|