// Copyright (c) 2006, 2007 Julio M. Merino Vidal
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// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
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// Copyright (c) 2009 Boris Schaeling
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// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
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// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
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//
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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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#ifndef BOOST_PROCESS_WINDOWS_SEARCH_PATH_HPP
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#define BOOST_PROCESS_WINDOWS_SEARCH_PATH_HPP
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#include <boost/process/detail/config.hpp>
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#include <boost/filesystem/path.hpp>
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#include <boost/filesystem/operations.hpp>
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#include <boost/system/error_code.hpp>
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#include <string>
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#include <stdexcept>
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#include <array>
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#include <atomic>
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#include <cstdlib>
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#include <boost/winapi/shell.hpp>
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#include <boost/process/environment.hpp>
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namespace boost { namespace process { namespace detail { namespace windows {
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inline boost::filesystem::path search_path(
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const boost::filesystem::path &filename,
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const std::vector<boost::filesystem::path> &path)
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{
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const ::boost::process::wnative_environment ne{};
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typedef typename ::boost::process::wnative_environment::const_entry_type value_type;
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const auto id = L"PATHEXT";
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auto itr = std::find_if(ne.cbegin(), ne.cend(),
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[&](const value_type & e)
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{return id == ::boost::to_upper_copy(e.get_name(), ::boost::process::detail::process_locale());});
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auto extensions_in = itr->to_vector();
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std::vector<std::wstring> extensions((extensions_in.size() * 2) + 1);
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auto it_ex = extensions.begin();
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it_ex++;
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it_ex = std::transform(extensions_in.begin(), extensions_in.end(), it_ex,
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[](const std::wstring & ws){return boost::to_lower_copy(ws, ::boost::process::detail::process_locale());});
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std::transform(extensions_in.begin(), extensions_in.end(), it_ex,
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[](const std::wstring & ws){return boost::to_upper_copy(ws, ::boost::process::detail::process_locale());});
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std::copy(std::make_move_iterator(extensions_in.begin()), std::make_move_iterator(extensions_in.end()), extensions.begin() + 1);
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for (auto & ext : extensions)
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boost::to_lower(ext);
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for (const boost::filesystem::path & pp_ : path)
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{
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auto p = pp_ / filename;
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for (boost::filesystem::path ext : extensions)
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{
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boost::filesystem::path pp_ext = p;
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pp_ext += ext;
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boost::system::error_code ec;
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bool file = boost::filesystem::is_regular_file(pp_ext, ec);
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if (!ec && file &&
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::boost::winapi::sh_get_file_info(pp_ext.native().c_str(), 0, 0, 0, ::boost::winapi::SHGFI_EXETYPE_))
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{
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return pp_ext;
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}
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}
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}
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return "";
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}
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}}}}
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#endif
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