fdguard.cpp

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/**********************************************************************
 * LeechCraft - modular cross-platform feature rich internet client.
 * Copyright (C) 2006-2014  Georg Rudoy
 * Copyright (C) 2012       Maxim Ignatenko
 *
 * Distributed under the Boost Software License, Version 1.0.
 * (See accompanying file LICENSE or copy at https://www.boost.org/LICENSE_1_0.txt)
 **********************************************************************/
 
#include "fdguard.h"
 
#include <fcntl.h>
#include <unistd.h>
 
namespace LC::Util
{
    FDGuard::FDGuard (const char *file, int mode)
    : FD_ { open (file, mode) }
    {
    }
 
    FDGuard::FDGuard (FDGuard&& other)
    : FD_ { other.FD_ }
    {
        other.FD_ = -1;
    }
 
    FDGuard& FDGuard::operator= (FDGuard&& other)
    {
        swap (*this, other);
 
        return *this;
    }
 
    FDGuard::~FDGuard ()
    {
        if (FD_ >= 0)
            close (FD_);
    }
 
    FDGuard::operator bool () const
    {
        return FD_ >= 0;
    }
 
    FDGuard::operator int () const
    {
        return FD_;
    }
 
    void swap (FDGuard& g1, FDGuard& g2)
    {
        std::swap (g1.FD_, g2.FD_);
    }
}