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135 lines
2.9 KiB
C++
135 lines
2.9 KiB
C++
//
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// TeeStream.h
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//
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// $Id: //poco/1.4/Foundation/include/Poco/TeeStream.h#1 $
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//
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// Library: Foundation
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// Package: Streams
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// Module: TeeStream
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//
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// Definition of the TeeStream class.
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//
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// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef Foundation_TeeStream_INCLUDED
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#define Foundation_TeeStream_INCLUDED
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#include "Poco/Foundation.h"
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#include "Poco/UnbufferedStreamBuf.h"
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#include <vector>
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#include <istream>
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#include <ostream>
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namespace Poco {
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class Foundation_API TeeStreamBuf: public UnbufferedStreamBuf
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/// This stream buffer copies all data written to or
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/// read from it to one or multiple output streams.
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{
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public:
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TeeStreamBuf();
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/// Creates an unconnected CountingStreamBuf.
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/// Use addStream() to attach output streams.
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TeeStreamBuf(std::istream& istr);
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/// Creates the CountingStreamBuf and connects it
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/// to the given input stream.
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TeeStreamBuf(std::ostream& ostr);
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/// Creates the CountingStreamBuf and connects it
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/// to the given output stream.
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~TeeStreamBuf();
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/// Destroys the CountingStream.
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void addStream(std::ostream& ostr);
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/// Adds the given output stream.
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protected:
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int readFromDevice();
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int writeToDevice(char c);
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private:
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typedef std::vector<std::ostream*> StreamVec;
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std::istream* _pIstr;
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StreamVec _streams;
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};
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class Foundation_API TeeIOS: public virtual std::ios
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/// The base class for TeeInputStream and TeeOutputStream.
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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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TeeIOS();
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/// Creates the basic stream and leaves it unconnected.
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TeeIOS(std::istream& istr);
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/// Creates the basic stream and connects it
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/// to the given input stream.
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TeeIOS(std::ostream& ostr);
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/// Creates the basic stream and connects it
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/// to the given output stream.
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~TeeIOS();
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/// Destroys the stream.
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void addStream(std::ostream& ostr);
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/// Adds the given output stream.
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TeeStreamBuf* rdbuf();
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/// Returns a pointer to the underlying streambuf.
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protected:
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TeeStreamBuf _buf;
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};
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class Foundation_API TeeInputStream: public TeeIOS, public std::istream
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/// This stream copies all characters read through it
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/// to one or multiple output streams.
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{
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public:
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TeeInputStream(std::istream& istr);
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/// Creates the TeeInputStream and connects it
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/// to the given input stream.
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~TeeInputStream();
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/// Destroys the TeeInputStream.
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};
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class Foundation_API TeeOutputStream: public TeeIOS, public std::ostream
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/// This stream copies all characters written to it
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/// to one or multiple output streams.
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{
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public:
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TeeOutputStream();
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/// Creates an unconnected TeeOutputStream.
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TeeOutputStream(std::ostream& ostr);
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/// Creates the TeeOutputStream and connects it
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/// to the given input stream.
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~TeeOutputStream();
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/// Destroys the TeeOutputStream.
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};
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} // namespace Poco
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#endif // Foundation_TeeStream_INCLUDED
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