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/*
* 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.)
*
* See http://www.boost.org/libs/iostreams for documentation.
* File: boost/iostreams/detail/execute.hpp
* Date: Thu Dec 06 13:21:54 MST 2007
* Copyright: 2007-2008 CodeRage, LLC
* Author: Jonathan Turkanis
* Contact: turkanis at coderage dot com
*
* Defines the function boost::iostreams::detail::current_directory, used by
* boost::iostreams::detail::absolute_path.
*/
#ifndef BOOST_IOSTREAMS_DETAIL_CURRENT_DIRECTORY_HPP_INCLUDED
#define BOOST_IOSTREAMS_DETAIL_CURRENT_DIRECTORY_HPP_INCLUDED
#include <boost/config.hpp> // make sure size_t is in std.
#include <cstddef> // size_t
#include <string>
#include <boost/iostreams/detail/buffer.hpp>
#include <boost/iostreams/detail/config/windows_posix.hpp>
#include <boost/iostreams/detail/system_failure.hpp>
#ifdef BOOST_IOSTREAMS_WINDOWS
# define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
# include <windows.h>
#else
# include <unistd.h> // sysconf.
#endif
// Must come last.
#include <boost/iostreams/detail/config/disable_warnings.hpp>
namespace boost { namespace iostreams { namespace detail {
// Returns the current working directory
inline std::string current_directory()
{
#ifdef BOOST_IOSTREAMS_WINDOWS
DWORD length;
basic_buffer<char> buf(MAX_PATH);
while (true) {
length = ::GetCurrentDirectoryA(buf.size(), buf.data());
if (!length)
throw_system_failure("failed determining current directory");
if (length < static_cast<DWORD>(buf.size()))
break;
buf.resize(buf.size() * 2);
}
return std::string(buf.data(), length);
#else // #ifdef BOOST_IOSTREAMS_WINDOWS
basic_buffer<char> buf(pathconf(".", _PC_PATH_MAX));
if (!getcwd(buf.data(), static_cast<size_t>(buf.size())))
throw_system_failure("failed determining current directory");
return std::string(buf.data());
#endif // #ifdef BOOST_IOSTREAMS_WINDOWS
}
} } } // End namespaces detail, iostreams, boost.
#include <boost/iostreams/detail/config/enable_warnings.hpp>
#endif // #ifndef BOOST_IOSTREAMS_DETAIL_CURRENT_DIRECTORY_HPP_INCLUDED
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