file_posix.hpp

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//
// Copyright (c) 2015-2016 Vinnie Falco (vinnie dot falco at gmail dot com)
//
// 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)
//
// Official repository: https://github.com/boostorg/beast
//

#ifndef BOOST_BEAST_CORE_FILE_POSIX_HPP
#define BOOST_BEAST_CORE_FILE_POSIX_HPP

#include <boost/config.hpp>

#if ! defined(BOOST_BEAST_NO_POSIX_FILE)
# if ! defined(__APPLE__) && ! defined(__linux__)
#  define BOOST_BEAST_NO_POSIX_FILE
# endif
#endif

#if ! defined(BOOST_BEAST_USE_POSIX_FILE)
# if ! defined(BOOST_BEAST_NO_POSIX_FILE)
#  define BOOST_BEAST_USE_POSIX_FILE 1
# else
#  define BOOST_BEAST_USE_POSIX_FILE 0
# endif
#endif

#if BOOST_BEAST_USE_POSIX_FILE

#include <boost/beast/core/error.hpp>
#include <boost/beast/core/file_base.hpp>
#include <cstdint>

namespace boost {
namespace beast {

class file_posix
{
    int fd_ = -1;

public:
    using native_handle_type = int;

    ~file_posix();

    file_posix() = default;

    file_posix(file_posix&& other);

    file_posix& operator=(file_posix&& other);

    native_handle_type
    native_handle() const
    {
        return fd_;
    }

    void
    native_handle(native_handle_type fd);

    bool
    is_open() const
    {
        return fd_ != -1;
    }

    void
    close(error_code& ec);

    void
    open(char const* path, file_mode mode, error_code& ec);

    std::uint64_t
    size(error_code& ec) const;

    std::uint64_t
    pos(error_code& ec) const;

    void
    seek(std::uint64_t offset, error_code& ec);

    std::size_t
    read(void* buffer, std::size_t n, error_code& ec) const;

    std::size_t
    write(void const* buffer, std::size_t n, error_code& ec);
};

} // beast
} // boost

#include <boost/beast/core/impl/file_posix.ipp>

#endif

#endif