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#pragma once
// fdhack.hpp - Move file descriptors around.
//
// Copyright © 2014 Ben Longbons <b.r.longbons@gmail.com>
//
// This file is part of The Mana World (Athena server)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "fwd.hpp"
#include <cstddef>
#include <fcntl.h>
#include <stdexcept>
#include "../strings/literal.hpp"
#include "../strings/zstring.hpp"
#include "../io/fd.hpp"
namespace tmwa
{
class ReplaceFd
{
io::FD number, backup;
public:
ReplaceFd(io::FD num, io::FD handle, bool owned)
: number(handle.dup2(num)), backup(num.dup())
{
if (owned)
handle.close();
}
~ReplaceFd()
{
backup.dup2(number);
backup.close();
}
};
class QuietFd : ReplaceFd
{
public:
QuietFd(io::FD num=io::FD::stderr())
: ReplaceFd(num, io::FD::open("/dev/null"_s, O_RDONLY), true)
{}
};
} // namespace tmwa
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