64 lines
1.4 KiB
C++
64 lines
1.4 KiB
C++
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/*
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Copyright 2021-2022 Glen Joseph Fernandes
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(glenjofe@gmail.com)
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Distributed under the Boost Software License, Version 1.0.
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(http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef BOOST_IO_NULLSTREAM_HPP
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#define BOOST_IO_NULLSTREAM_HPP
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#include <boost/config.hpp>
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#include <ostream>
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#include <streambuf>
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namespace boost {
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namespace io {
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template<class CharT, class Traits = std::char_traits<CharT> >
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class basic_nullbuf
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: public std::basic_streambuf<CharT, Traits> {
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protected:
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typename Traits::int_type overflow(typename Traits::int_type c)
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BOOST_OVERRIDE {
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return Traits::not_eof(c);
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}
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std::streamsize xsputn(const CharT*, std::streamsize n) BOOST_OVERRIDE {
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return n;
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}
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};
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namespace detail {
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template<class CharT, class Traits>
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class nullbuf {
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public:
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boost::io::basic_nullbuf<CharT, Traits>* buf() {
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return &buf_;
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}
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private:
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boost::io::basic_nullbuf<CharT, Traits> buf_;
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};
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} /* detail */
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template<class CharT, class Traits = std::char_traits<CharT> >
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class basic_onullstream
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: detail::nullbuf<CharT, Traits>
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, public std::basic_ostream<CharT, Traits> {
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public:
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basic_onullstream()
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: std::basic_ostream<CharT, Traits>(detail::nullbuf<CharT,
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Traits>::buf()) { }
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};
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typedef basic_onullstream<char> onullstream;
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typedef basic_onullstream<wchar_t> wonullstream;
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} /* io */
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} /* boost */
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#endif
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