subprocess_env_map_t result;

// first, copy existing environment

// we cannot reserve space in the vector unfortunately, as we don't know the size of environ before the iteration

if (environ != nullptr) {

for (auto** current_env_var = environ; *current_env_var != nullptr; ++current_env_var) {

std::string current_env_var_str(*current_env_var);

const auto first_eq = current_env_var_str.find_first_of('=');

const auto env_var_name = current_env_var_str.substr(0, first_eq);

const auto env_var_value = current_env_var_str.substr(first_eq + 1);

result[env_var_name] = env_var_value;

}

}

return result;