/*
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* Distributed under the Boost Software License, Version 1.0.(See accompanying
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* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
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*
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* See http://www.boost.org/libs/iostreams for documentation.
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* File: boost/iostreams/detail/execute.hpp
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* Date: Thu Dec 06 13:21:54 MST 2007
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* Copyright: 2007-2008 CodeRage, LLC
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* Author: Jonathan Turkanis
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* Contact: turkanis at coderage dot com
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*
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* Defines the function boost::iostreams::detail::current_directory, used by
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* boost::iostreams::detail::absolute_path.
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*/
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#ifndef BOOST_IOSTREAMS_DETAIL_CURRENT_DIRECTORY_HPP_INCLUDED
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#define BOOST_IOSTREAMS_DETAIL_CURRENT_DIRECTORY_HPP_INCLUDED
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#include <boost/config.hpp> // make sure size_t is in std.
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#include <cstddef> // size_t
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#include <string>
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#include <boost/iostreams/detail/buffer.hpp>
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#include <boost/iostreams/detail/config/windows_posix.hpp>
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#include <boost/iostreams/detail/system_failure.hpp>
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#ifdef BOOST_IOSTREAMS_WINDOWS
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# define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
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# include <windows.h>
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#else
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# include <unistd.h> // sysconf.
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#endif
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// Must come last.
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#include <boost/iostreams/detail/config/disable_warnings.hpp>
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namespace boost { namespace iostreams { namespace detail {
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// Returns the current working directory
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inline std::string current_directory()
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{
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#ifdef BOOST_IOSTREAMS_WINDOWS
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DWORD length;
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basic_buffer<char> buf(MAX_PATH);
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while (true) {
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length = ::GetCurrentDirectoryA(buf.size(), buf.data());
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if (!length)
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throw_system_failure("failed determining current directory");
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if (length < static_cast<DWORD>(buf.size()))
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break;
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buf.resize(buf.size() * 2);
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}
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return std::string(buf.data(), length);
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#else // #ifdef BOOST_IOSTREAMS_WINDOWS
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basic_buffer<char> buf(pathconf(".", _PC_PATH_MAX));
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if (!getcwd(buf.data(), static_cast<size_t>(buf.size())))
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throw_system_failure("failed determining current directory");
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return std::string(buf.data());
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#endif // #ifdef BOOST_IOSTREAMS_WINDOWS
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}
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} } } // End namespaces detail, iostreams, boost.
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#include <boost/iostreams/detail/config/enable_warnings.hpp>
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#endif // #ifndef BOOST_IOSTREAMS_DETAIL_CURRENT_DIRECTORY_HPP_INCLUDED
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