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97 lines
3.3 KiB
C++
97 lines
3.3 KiB
C++
//
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// AsyncStreamChannel.h
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//
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// $Id: //poco/Main/Foundation/include/Poco/AsyncStreamChannel.h#1 $
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//
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// Library: Foundation
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// Package: AsyncIO
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// Module: AsyncStreamChannel
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//
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// Definition of the AsyncStreamChannel class.
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//
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// Copyright (c) 2007, 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_AsyncStreamChannel_INCLUDED
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#define Foundation_AsyncStreamChannel_INCLUDED
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#include "Poco/Foundation.h"
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#include "Poco/AsyncIOChannel.h"
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#include <istream>
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#include <ostream>
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#include <iostream>
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namespace Poco {
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class Foundation_API AsyncStreamChannel: public AsyncIOChannel
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/// AsyncStreamChannel provides an AsyncIOChannel for I/O streams.
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///
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/// Usage Example:
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/// std::stringstream str;
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/// AsyncStreamChannel channel(str);
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/// channel.enqueue(new AsyncWriteCommand("Hello", 5));
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/// channel.enqueue(new AsyncWriteCommand(", ", 2));
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/// ActiveResult<int> result = channel.enqueue(new AsyncWriteCommand("world!", 6));
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/// result.wait();
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/// std::string s(str.str());
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{
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public:
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AsyncStreamChannel(std::istream& istr);
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/// Creates an AsyncStreamChannel using the given input stream.
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/// Only read and seek operations will be allowed.
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AsyncStreamChannel(std::ostream& ostr);
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/// Creates an AsyncStreamChannel using the given output stream.
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/// Only write and seek operations will be allowed.
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AsyncStreamChannel(std::iostream& iostr);
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/// Creates an AsyncStreamChannel using the given input/output stream.
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~AsyncStreamChannel();
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/// Destroys the AsyncStreamChannel.
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// AsyncIOChannel
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int write(const void* buffer, int length);
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int read(void* buffer, int length);
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int seek(std::streamoff off, std::ios::seekdir dir);
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private:
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AsyncStreamChannel();
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std::istream* _pIstr;
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std::ostream* _pOstr;
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};
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} // namespace Poco
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#endif // Foundation_AsyncStreamChannel_INCLUDED
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