[ABAP] Get Filename and Mimetype from uploaded file

    DATA data_tab TYPE solix_tab.
    DATA filename TYPE string.
    DATA path     TYPE string DEFAULT 'C:\Users\path\to\my\file.pdf'.

    cl_gui_frontend_services=>gui_upload( EXPORTING filename   = path )
                                                    filetype   = 'BIN'
                                          CHANGING  data_tab   = data_tab ).

    CALL FUNCTION 'SO_SPLIT_FILE_AND_PATH'
      EXPORTING
        full_name     = path 
      IMPORTING
        stripped_name = filename
      EXCEPTIONS
        x_error       = 1
        OTHERS        = 2.

    DATA(file_extension) = /iwwrk/cl_mgw_workflow_rt_util=>get_extention_from_file_name( filename ).
    DATA(mimetype)       = /iwwrk/cl_mgw_workflow_rt_util=>get_mime_type_from_extension( file_extension ).