How to upload a PDF file, zip it and download the zipped file?

Hi Experts,
I have a requirement to upload a PDF file, convert that to a ZIP file and download it. If anyone has worked on this requirement, can you please guide me on this? Thanks.
Avi

Here you go. Hope it helps.
REPORT zrich_0004.
DATA: lt_data TYPE TABLE OF x255.
DATA: ls_data LIKE LINE OF lt_data.
DATA: lv_zip_content TYPE xstring.
DATA: lv_size TYPE i.
DATA: lv_filename TYPE string.
DATA: lv_path TYPE string.
DATA: lv_fullpath TYPE string.
DATA: lt_filetab TYPE TABLE OF file_table.
DATA: ls_filetab LIKE LINE OF lt_filetab.
DATA: lv_rc TYPE sy-subrc.
DATA: lv_content TYPE xstring.
DATA: lo_zip TYPE REF TO cl_abap_zip.
SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME TITLE text-001.
PARAMETERS: p_up TYPE string DEFAULT 'C:\upload.pdf' .
PARAMETERS: p_down TYPE string DEFAULT 'C:\download.zip' .
SELECTION-SCREEN END OF BLOCK b1.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_up.
REFRESH lt_filetab. CLEAR ls_filetab.
cl_gui_frontend_services=>file_open_dialog(
      CHANGING
        file_table              = lt_filetab
        rc                      = lv_rc
    EXCEPTIONS
      OTHERS                  = 5 ).
READ TABLE lt_filetab INTO ls_filetab INDEX 1.
IF sy-subrc = 0.
    p_up = ls_filetab-filename.
ENDIF.
AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_down.
CLEAR: lv_filename, lv_path, lv_fullpath.
cl_gui_frontend_services=>file_save_dialog(
     CHANGING
       filename             = lv_filename
       path                 = lv_path
       fullpath             = lv_fullpath
     EXCEPTIONS
       OTHERS               = 4 ).
p_down = lv_fullpath.
START-OF-SELECTION.
CREATE OBJECT lo_zip.
* Read the data as a string
cl_gui_frontend_services=>gui_upload(
    EXPORTING
      filename                = p_up
      filetype                = 'BIN'
    IMPORTING
      filelength = lv_size
    CHANGING
      data_tab                = lt_data
    EXCEPTIONS
      OTHERS                  = 19 ).
* convert binary to xstring
CLEAR lv_content .
CALL FUNCTION 'SCMS_BINARY_TO_XSTRING'
    EXPORTING
      input_length = lv_size
    IMPORTING
      buffer       = lv_content
    TABLES
      binary_tab   = lt_data
    EXCEPTIONS
      failed       = 1
      OTHERS       = 2.
* Get the file name of the uploaded file
DATA: lv_upfilename TYPE string.
DATA: lv_tmp TYPE char1024.
DATA: lv_tmp_file TYPE char1024.
lv_tmp = p_up.
CALL FUNCTION 'STRING_REVERSE'
    EXPORTING
      string = lv_tmp
      lang    = sy-langu
    IMPORTING
      rstring = lv_tmp.
SPLIT lv_tmp AT '\' INTO lv_tmp_file lv_tmp.
CALL FUNCTION 'STRING_REVERSE'
    EXPORTING
      string = lv_tmp_file
      lang    = sy-langu
    IMPORTING
      rstring = lv_tmp_file.
lv_upfilename = lv_tmp_file.
* add to zip file.
lo_zip->add( name = lv_upfilename content = lv_content ).
lv_zip_content   = lo_zip->save( ).
* Conver the xstring content to binary
CALL FUNCTION 'SCMS_XSTRING_TO_BINARY'
    EXPORTING
      buffer        = lv_zip_content
    IMPORTING
      output_length = lv_size
    TABLES
      binary_tab    = lt_data.
* download
cl_gui_frontend_services=>gui_download(
      EXPORTING
        bin_filesize = lv_size
        filename     = p_down
        filetype     = 'BIN'
      CHANGING
        data_tab     = lt_data
      EXCEPTIONS
        OTHERS       = 24 ).
Regards,
Rich Heilman

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