mirror of
https://github.com/pocoproject/poco.git
synced 2024-12-15 11:30:59 +01:00
143 lines
3.9 KiB
C++
143 lines
3.9 KiB
C++
//
|
|
// PipeStream.h
|
|
//
|
|
// $Id: //poco/svn/Foundation/include/Poco/PipeStream.h#2 $
|
|
//
|
|
// Library: Foundation
|
|
// Package: Processes
|
|
// Module: PipeStream
|
|
//
|
|
// Definition of the PipeStream class.
|
|
//
|
|
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person or organization
|
|
// obtaining a copy of the software and accompanying documentation covered by
|
|
// this license (the "Software") to use, reproduce, display, distribute,
|
|
// execute, and transmit the Software, and to prepare derivative works of the
|
|
// Software, and to permit third-parties to whom the Software is furnished to
|
|
// do so, all subject to the following:
|
|
//
|
|
// The copyright notices in the Software and this entire statement, including
|
|
// the above license grant, this restriction and the following disclaimer,
|
|
// must be included in all copies of the Software, in whole or in part, and
|
|
// all derivative works of the Software, unless such copies or derivative
|
|
// works are solely in the form of machine-executable object code generated by
|
|
// a source language processor.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
|
|
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
|
|
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
|
|
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
// DEALINGS IN THE SOFTWARE.
|
|
//
|
|
|
|
|
|
#ifndef Foundation_PipeStream_INCLUDED
|
|
#define Foundation_PipeStream_INCLUDED
|
|
|
|
|
|
#include "Poco/Foundation.h"
|
|
#include "Poco/Pipe.h"
|
|
#include "Poco/BufferedStreamBuf.h"
|
|
#include <istream>
|
|
#include <ostream>
|
|
|
|
|
|
namespace Poco {
|
|
|
|
|
|
class Foundation_API PipeStreamBuf: public BufferedStreamBuf
|
|
/// This is the streambuf class used for reading from and writing to a Pipe.
|
|
{
|
|
public:
|
|
typedef BufferedStreamBuf::openmode openmode;
|
|
|
|
PipeStreamBuf(const Pipe& pipe, openmode mode);
|
|
/// Creates a PipeStreamBuf with the given Pipe.
|
|
|
|
~PipeStreamBuf();
|
|
/// Destroys the PipeStreamBuf.
|
|
|
|
void close();
|
|
/// Closes the pipe.
|
|
|
|
protected:
|
|
int readFromDevice(char* buffer, std::streamsize length);
|
|
int writeToDevice(const char* buffer, std::streamsize length);
|
|
|
|
private:
|
|
enum
|
|
{
|
|
STREAM_BUFFER_SIZE = 1024
|
|
};
|
|
|
|
Pipe _pipe;
|
|
};
|
|
|
|
|
|
class Foundation_API PipeIOS: public virtual std::ios
|
|
/// The base class for PipeInputStream and
|
|
/// PipeOutputStream.
|
|
///
|
|
/// This class is needed to ensure the correct initialization
|
|
/// order of the stream buffer and base classes.
|
|
{
|
|
public:
|
|
PipeIOS(const Pipe& pipe, openmode mode);
|
|
/// Creates the PipeIOS with the given Pipe.
|
|
|
|
~PipeIOS();
|
|
/// Destroys the PipeIOS.
|
|
///
|
|
/// Flushes the buffer, but does not close the pipe.
|
|
|
|
PipeStreamBuf* rdbuf();
|
|
/// Returns a pointer to the internal PipeStreamBuf.
|
|
|
|
void close();
|
|
/// Flushes the stream and closes the pipe.
|
|
|
|
protected:
|
|
PipeStreamBuf _buf;
|
|
};
|
|
|
|
|
|
class Foundation_API PipeOutputStream: public PipeIOS, public std::ostream
|
|
/// An output stream for writing to a Pipe.
|
|
{
|
|
public:
|
|
PipeOutputStream(const Pipe& pipe);
|
|
/// Creates the PipeOutputStream with the given Pipe.
|
|
|
|
~PipeOutputStream();
|
|
/// Destroys the PipeOutputStream.
|
|
///
|
|
/// Flushes the buffer, but does not close the pipe.
|
|
};
|
|
|
|
|
|
class Foundation_API PipeInputStream: public PipeIOS, public std::istream
|
|
/// An input stream for reading from a Pipe.
|
|
///
|
|
/// Using formatted input from a PipeInputStream
|
|
/// is not recommended, due to the read-ahead behavior of
|
|
/// istream with formatted reads.
|
|
{
|
|
public:
|
|
PipeInputStream(const Pipe& pipe);
|
|
/// Creates the PipeInputStream with the given Pipe.
|
|
|
|
~PipeInputStream();
|
|
/// Destroys the PipeInputStream.
|
|
};
|
|
|
|
|
|
} // namespace Poco
|
|
|
|
|
|
#endif // Foundation_PipeStream_INCLUDED
|