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// Copyright (c) 2006, 2007 Julio M. Merino Vidal
// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
// Copyright (c) 2009 Boris Schaeling
// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
// Copyright (c) 2016 Klemens D. Morgenstern
//
// 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)
#ifndef BOOST_PROCESS_POSIX_FILE_OUT_HPP
#define BOOST_PROCESS_POSIX_FILE_OUT_HPP
#include <boost/process/detail/posix/handler.hpp>
#include <boost/process/detail/posix/file_descriptor.hpp>
#include <unistd.h>
namespace boost { namespace process { namespace detail { namespace posix {
template<int p1, int p2>
struct file_out : handler_base_ext
{
file_descriptor file;
int handle = file.handle();
template<typename T>
file_out(T&& t) : file(std::forward<T>(t), file_descriptor::write), handle(file.handle()) {}
file_out(FILE * f) : handle(fileno(f)) {}
template <typename Executor>
void on_exec_setup(Executor &e) const;
};
template<>
template<typename Executor>
void file_out<1,-1>::on_exec_setup(Executor &e) const
{
if (::dup2(handle, STDOUT_FILENO) == -1)
e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
}
template<>
template<typename Executor>
void file_out<2,-1>::on_exec_setup(Executor &e) const
{
if (::dup2(handle, STDERR_FILENO) == -1)
e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
}
template<>
template<typename Executor>
void file_out<1,2>::on_exec_setup(Executor &e) const
{
if (::dup2(handle, STDOUT_FILENO) == -1)
e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
if (::dup2(handle, STDERR_FILENO) == -1)
e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
}
}}}}
#endif
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