/usr/include/Poco/NullStream.h is in libpoco-dev 1.3.6p1-5.1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 | //
// NullStream.h
//
// $Id: //poco/1.3/Foundation/include/Poco/NullStream.h#1 $
//
// Library: Foundation
// Package: Streams
// Module: NullStream
//
// Definition of the NullStreamBuf, NullInputStream and NullOutputStream classes.
//
// 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_NullStream_INCLUDED
#define Foundation_NullStream_INCLUDED
#include "Poco/Foundation.h"
#include "Poco/UnbufferedStreamBuf.h"
#include <istream>
#include <ostream>
namespace Poco {
class Foundation_API NullStreamBuf: public UnbufferedStreamBuf
/// This stream buffer discards all characters written to it.
/// Any read operation immediately yields EOF.
{
public:
NullStreamBuf();
/// Creates a NullStreamBuf.
~NullStreamBuf();
/// Destroys the NullStreamBuf.
protected:
int readFromDevice();
int writeToDevice(char c);
};
class Foundation_API NullIOS: public virtual std::ios
/// The base class for NullInputStream and NullOutputStream.
///
/// This class is needed to ensure the correct initialization
/// order of the stream buffer and base classes.
{
public:
NullIOS();
~NullIOS();
protected:
NullStreamBuf _buf;
};
class Foundation_API NullInputStream: public NullIOS, public std::istream
/// Any read operation from this stream immediately
/// yields EOF.
{
public:
NullInputStream();
/// Creates the NullInputStream.
~NullInputStream();
/// Destroys the NullInputStream.
};
class Foundation_API NullOutputStream: public NullIOS, public std::ostream
/// This stream discards all characters written to it.
{
public:
NullOutputStream();
/// Creates the NullOutputStream.
~NullOutputStream();
/// Destroys the NullOutputStream.
};
} // namespace Poco
#endif // Foundation_NullStream_INCLUDED
|