dlib C++ Library - misc_api_shared.h

    // Copyright (C) 2014  Davis E. King (davis@dlib.net)
    // License: Boost Software License   See LICENSE.txt for the full license.
    #ifndef DLIB_MISC_API_ShARED_Hh_
    #define DLIB_MISC_API_ShARED_Hh_

    #include <string>
    #include "../noncopyable.h"

    namespace dlib
    {

    // ----------------------------------------------------------------------------------------

        class locally_change_current_dir : noncopyable
        {
        public:
            explicit locally_change_current_dir (
                const std::string& new_dir
            )
            {
                reverted = false;
                _old_dir = get_current_dir();
                set_current_dir(new_dir);
            }

            ~locally_change_current_dir()
            {
                revert();
            }

            const std::string& old_dir (
            ) const
            {
                return _old_dir;
            }

            void revert (
            )
            {
                if (!reverted)
                {
                    set_current_dir(_old_dir);
                    reverted = true;
                }
            }

        private:
            bool reverted;
            std::string _old_dir;
        };

    // ----------------------------------------------------------------------------------------

    }

    #endif // DLIB_MISC_API_ShARED_Hh_