/usr/include/boost/test/utils/nullstream.hpp is in libboost1.54-dev 1.54.0-4ubuntu3.
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 | // (C) Copyright Gennadiy Rozental 2002-2008.
// (C) Copyright Daryle Walker 2000-2001.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
// See http://www.boost.org/libs/test for the library home page.
//
// File : $RCSfile$
//
// Version : $Revision: 49312 $
//
// Description : simulate /dev/null stream
// ***************************************************************************
#ifndef BOOST_NULLSTREAM_HPP_071894GER
#define BOOST_NULLSTREAM_HPP_071894GER
#include <ostream> // for std::basic_ostream
#include <streambuf> // for std::basic_streambuf
#include <string> // for std::char_traits
#include <boost/utility/base_from_member.hpp>
#include <boost/test/detail/suppress_warnings.hpp>
//____________________________________________________________________________//
namespace boost {
// ************************************************************************** //
// ************** basic_nullbuf ************** //
// ************************************************************************** //
// Class for a buffer that reads nothing and writes to nothing.
// Idea from an Usenet post by Tom <the_wid@my-deja.com> at
// 27 Oct 2000 14:06:21 GMT on comp.lang.c++.
template<typename CharType, class CharTraits = ::std::char_traits<CharType> >
class basic_nullbuf : public ::std::basic_streambuf<CharType, CharTraits> {
typedef ::std::basic_streambuf<CharType, CharTraits> base_type;
public:
// Types
typedef typename base_type::char_type char_type;
typedef typename base_type::traits_type traits_type;
typedef typename base_type::int_type int_type;
typedef typename base_type::pos_type pos_type;
typedef typename base_type::off_type off_type;
// Use automatic default constructor and destructor
protected:
// The default implementations of the miscellaneous virtual
// member functions are sufficient.
// The default implementations of the input & putback virtual
// member functions, being nowhere but EOF, are sufficient.
// The output virtual member functions need to be changed to
// accept anything without any problems, instead of being at EOF.
virtual ::std::streamsize xsputn( char_type const* /*s*/, ::std::streamsize n ) { return n; } // "s" is unused
virtual int_type overflow( int_type c = traits_type::eof() ) { return traits_type::not_eof( c ); }
};
typedef basic_nullbuf<char> nullbuf;
typedef basic_nullbuf<wchar_t> wnullbuf;
// ************************************************************************** //
// ************** basic_onullstream ************** //
// ************************************************************************** //
// Output streams based on basic_nullbuf.
#ifdef BOOST_MSVC
# pragma warning(push)
# pragma warning(disable: 4355) // 'this' : used in base member initializer list
#endif
template< typename CharType, class CharTraits = ::std::char_traits<CharType> >
class basic_onullstream : private boost::base_from_member<basic_nullbuf<CharType, CharTraits> >
, public ::std::basic_ostream<CharType, CharTraits> {
typedef boost::base_from_member<basic_nullbuf<CharType, CharTraits> > pbase_type;
typedef ::std::basic_ostream<CharType, CharTraits> base_type;
public:
// Constructor
basic_onullstream() : pbase_type(), base_type( &this->pbase_type::member ) {}
};
#ifdef BOOST_MSVC
# pragma warning(default: 4355)
#endif
typedef basic_onullstream<char> onullstream;
typedef basic_onullstream<wchar_t> wonullstream;
} // namespace boost
//____________________________________________________________________________//
#include <boost/test/detail/enable_warnings.hpp>
#endif // BOOST_NULLSTREAM_HPP_071894GER
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