detail/impl/environment_posix.ipp

0001 //
0002 // process/this_process/detail/environment_posix.hpp
0003 // ~~~~~~~~~~~~~~~~~~~~~~~~
0004 //
0005 // Copyright (c) 2021 Klemens D. Morgenstern (klemens dot morgenstern at gmx dot net)
0006 //
0007 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0008 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0009 //
0010
0011 #ifndef BOOST_PROCESS_V2_DETAIL_ENVIRONMENT_WIN_HPP
0012 #define BOOST_PROCESS_V2_DETAIL_ENVIRONMENT_WIN_HPP
0013
0014 #include <boost/process/v2/detail/config.hpp>
0015 #include <boost/process/v2/detail/last_error.hpp>
0016 #include <boost/process/v2/environment.hpp>
0017 #include <boost/process/v2/cstring_ref.hpp>
0018
0019 #include <unistd.h>
0020 #include <cstring>
0021
0022
0023 BOOST_PROCESS_V2_BEGIN_NAMESPACE
0024
0025 namespace environment
0026 {
0027 namespace detail
0028 {
0029
0030 basic_cstring_ref<char_type, value_char_traits<char>> get(
0031         basic_cstring_ref<char_type, key_char_traits<char_type>> key,
0032         error_code & ec)
0033 {
0034     auto res = ::getenv(key.c_str());
0035     if (res == nullptr)
0036     {
0037         BOOST_PROCESS_V2_ASSIGN_EC(ec, ENOENT, system_category())
0038         return {};
0039     }
0040     return res;
0041 }
0042
0043 void set(basic_cstring_ref<char_type,   key_char_traits<char_type>>   key,
0044          basic_cstring_ref<char_type, value_char_traits<char_type>> value,
0045                 error_code & ec)
0046 {
0047     if (::setenv(key.c_str(), value.c_str(), true))
0048         BOOST_PROCESS_V2_ASSIGN_LAST_ERROR(ec)
0049 }
0050
0051 void unset(basic_cstring_ref<char_type, key_char_traits<char_type>> key, error_code & ec)
0052 {
0053     if (::unsetenv(key.c_str()))
0054         BOOST_PROCESS_V2_ASSIGN_LAST_ERROR(ec)
0055 }
0056
0057
0058 native_handle_type load_native_handle() { return ::environ; }
0059
0060
0061 native_iterator next(native_iterator nh)
0062 {
0063     return nh + 1;
0064 }
0065
0066 native_iterator find_end(native_handle_type nh)
0067 {
0068     while (*nh != nullptr)
0069         nh++;
0070     return nh;
0071 }
0072 bool is_executable(const filesystem::path & p, error_code & ec)
0073 {
0074     return filesystem::is_regular_file(p, ec) && (::access(p.c_str(), X_OK) == 0);
0075 }
0076
0077 }
0078 }
0079 BOOST_PROCESS_V2_END_NAMESPACE
0080
0081 #endif //BOOST_PROCESS_V2_DETAIL_ENVIRONMENT_WIN_HPP