ostream_logger.hpp

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// ostream_logger.hpp
/*
 *  Copyright (c) 2020 Leigh Johnston.
 *
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are
 *  met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *
 *     * Neither the name of Leigh Johnston nor the names of any
 *       other contributors to this software may be used to endorse or
 *       promote products derived from this software without specific prior
 *       written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 *  IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 *  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 *  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 *  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 *  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
#pragma once
 
#include <neolib/neolib.hpp>
#include <ostream>
#include <neolib/app/logger.hpp>
 
namespace neolib
{
    namespace logger
    {
        template <uint32_t Instance = 0u, typename CharT = char, typename Traits = std::char_traits<CharT>>
        class basic_ostream_logger : public logger<Instance>
        {
            typedef logger<Instance> base_type;
        protected:
            using typename base_type::buffer_t;
        public:
            basic_ostream_logger(std::basic_ostream<CharT, Traits>& aStream) :
                iStream{ aStream }
            {
            }
            ~basic_ostream_logger()
            {
                finalize();
            }
        public:
            using base_type::finalize;
        protected:
            void commit(buffer_t const& aBuffer) override
            {
                iStream << aBuffer << std::flush;
            }
        protected:
            using base_type::set_destroying;
        private:
            std::basic_ostream<CharT, Traits>& iStream;
        };
 
        template <uint32_t Instance = 0u>
        using ostream_logger = basic_ostream_logger<Instance>;
    }
}