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127 lines
3.6 KiB
C++
127 lines
3.6 KiB
C++
//
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// Base64Decoder.h
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//
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// $Id: //poco/1.4/Foundation/include/Poco/Base64Decoder.h#2 $
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//
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// Library: Foundation
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// Package: Streams
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// Module: Base64
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//
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// Definition of class Base64Decoder.
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#ifndef Foundation_Base64Decoder_INCLUDED
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#define Foundation_Base64Decoder_INCLUDED
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#include "Poco/Foundation.h"
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#include "Poco/UnbufferedStreamBuf.h"
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#include <istream>
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namespace Poco {
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class Foundation_API Base64DecoderBuf: public UnbufferedStreamBuf
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/// This streambuf base64-decodes all data read
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/// from the istream connected to it.
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///
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/// Note: For performance reasons, the characters
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/// are read directly from the given istream's
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/// underlying streambuf, so the state
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/// of the istream will not reflect that of
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/// its streambuf.
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{
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public:
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Base64DecoderBuf(std::istream& istr);
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~Base64DecoderBuf();
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private:
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int readFromDevice();
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int readOne();
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unsigned char _group[3];
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int _groupLength;
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int _groupIndex;
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std::streambuf& _buf;
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static unsigned char IN_ENCODING[256];
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static bool IN_ENCODING_INIT;
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private:
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Base64DecoderBuf(const Base64DecoderBuf&);
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Base64DecoderBuf& operator = (const Base64DecoderBuf&);
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};
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class Foundation_API Base64DecoderIOS: public virtual std::ios
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/// The base class for Base64Decoder.
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///
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/// This class is needed to ensure the correct initialization
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/// order of the stream buffer and base classes.
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{
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public:
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Base64DecoderIOS(std::istream& istr);
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~Base64DecoderIOS();
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Base64DecoderBuf* rdbuf();
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protected:
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Base64DecoderBuf _buf;
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private:
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Base64DecoderIOS(const Base64DecoderIOS&);
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Base64DecoderIOS& operator = (const Base64DecoderIOS&);
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};
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class Foundation_API Base64Decoder: public Base64DecoderIOS, public std::istream
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/// This istream base64-decodes all data
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/// read from the istream connected to it.
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///
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/// Note: For performance reasons, the characters
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/// are read directly from the given istream's
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/// underlying streambuf, so the state
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/// of the istream will not reflect that of
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/// its streambuf.
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{
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public:
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Base64Decoder(std::istream& istr);
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~Base64Decoder();
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private:
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Base64Decoder(const Base64Decoder&);
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Base64Decoder& operator = (const Base64Decoder&);
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};
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} // namespace Poco
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#endif // Foundation_Base64Decoder_INCLUDED
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