mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-10-05 08:00:51 +00:00
107 lines
2.4 KiB
C++
107 lines
2.4 KiB
C++
//
|
|
// Base64Decoder.h
|
|
//
|
|
// $Id: //poco/1.4/Foundation/include/Poco/Base64Decoder.h#2 $
|
|
//
|
|
// Library: Foundation
|
|
// Package: Streams
|
|
// Module: Base64
|
|
//
|
|
// Definition of class Base64Decoder.
|
|
//
|
|
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
//
|
|
|
|
|
|
#ifndef Foundation_Base64Decoder_INCLUDED
|
|
#define Foundation_Base64Decoder_INCLUDED
|
|
|
|
|
|
#include "Poco/Foundation.h"
|
|
#include "Poco/UnbufferedStreamBuf.h"
|
|
#include <istream>
|
|
|
|
|
|
namespace Poco {
|
|
|
|
|
|
class Foundation_API Base64DecoderBuf: public UnbufferedStreamBuf
|
|
/// This streambuf base64-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:
|
|
Base64DecoderBuf(std::istream& istr);
|
|
~Base64DecoderBuf();
|
|
|
|
private:
|
|
int readFromDevice();
|
|
int readOne();
|
|
|
|
unsigned char _group[3];
|
|
int _groupLength;
|
|
int _groupIndex;
|
|
std::streambuf& _buf;
|
|
|
|
static unsigned char IN_ENCODING[256];
|
|
static bool IN_ENCODING_INIT;
|
|
|
|
private:
|
|
Base64DecoderBuf(const Base64DecoderBuf&);
|
|
Base64DecoderBuf& operator = (const Base64DecoderBuf&);
|
|
};
|
|
|
|
|
|
class Foundation_API Base64DecoderIOS: public virtual std::ios
|
|
/// The base class for Base64Decoder.
|
|
///
|
|
/// This class is needed to ensure the correct initialization
|
|
/// order of the stream buffer and base classes.
|
|
{
|
|
public:
|
|
Base64DecoderIOS(std::istream& istr);
|
|
~Base64DecoderIOS();
|
|
Base64DecoderBuf* rdbuf();
|
|
|
|
protected:
|
|
Base64DecoderBuf _buf;
|
|
|
|
private:
|
|
Base64DecoderIOS(const Base64DecoderIOS&);
|
|
Base64DecoderIOS& operator = (const Base64DecoderIOS&);
|
|
};
|
|
|
|
|
|
class Foundation_API Base64Decoder: public Base64DecoderIOS, public std::istream
|
|
/// This istream base64-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:
|
|
Base64Decoder(std::istream& istr);
|
|
~Base64Decoder();
|
|
|
|
private:
|
|
Base64Decoder(const Base64Decoder&);
|
|
Base64Decoder& operator = (const Base64Decoder&);
|
|
};
|
|
|
|
|
|
} // namespace Poco
|
|
|
|
|
|
#endif // Foundation_Base64Decoder_INCLUDED
|