topic PDF to BASE64 conversion in Application Development and Automation Discussions

PDF to BASE64 conversion

former_member220911 — Fri, 22 May 2009 10:59:18 GMT

Hi gurus,

I have a PDF in binary format from a smartform and I need to encode it in base64 format.

I'm using cl_http_utility=>encode_base64 but it doesn't works.

Debugging my application, I've downloaded the binary file from the debugger and I can open it with a pdf reader. But if I put the conversion returnered from this method in a converter (base64 to binary) PDF Reader can't read my file.

Does anyone faced similar problem?

Thanks in advance.

Regards,

David Gimeno

Re: PDF to BASE64 conversion

Former Member — Fri, 22 May 2009 13:34:17 GMT

check this example:


REPORT  ZTEST.
DATA: FILESIZE TYPE i.
DATA: CANCEL.
DATA: ACT_FILENAME   LIKE RLGRAP-FILENAME.
DATA: EXTEMPL        LIKE RLGRAP-FILENAME.
DATA: ACT_FILETYPE   LIKE RLGRAP-FILETYPE.
DATA: BEGIN OF tab_imp occurs 0,
        line(2000),
      END OF tab_imp.
DATA: BEGIN OF jtab_imp occurs 0,
        line(2000),
      END OF jtab_imp.

DATA str1 type string.
DATA str2 type string.
DATA str3 type string.
DATA str type string.
start-of-selection.
*read binary file....
      CALL FUNCTION 'UPLOAD'
       EXPORTING
          CODEPAGE                      = 'IBM'
          FILETYPE                      = 'BIN'
          FILEMASK_MASK                 = 'XLT'
       IMPORTING
         FILESIZE                       = FILESIZE
         CANCEL                         = CANCEL
         ACT_FILENAME                   = ACT_FILENAME
         ACT_FILETYPE                   = ACT_FILETYPE
        TABLES
          DATA_TAB                      = tab_imp
       EXCEPTIONS
         CONVERSION_ERROR              = 1
         INVALID_TABLE_WIDTH           = 2
         INVALID_TYPE                  = 3
         NO_BATCH                      = 4
         UNKNOWN_ERROR                 = 5
         GUI_REFUSE_FILETRANSFER       = 6
         OTHERS                        = 7.
check cancel is initial.
* convert binary table to string
loop at tab_imp into str.
  concatenate str1 str into str1.
endloop.
* code string to base64
CALL METHOD cl_http_utility=>encode_base64
  EXPORTING
    UNENCODED = str1
  RECEIVING
    ENCODED   = str2.
* decode string from base64

CALL METHOD cl_http_utility=>DECODE_BASE64
    EXPORTING
      ENCODED = str2
    RECEIVING
      DECODED = str3.
CALL FUNCTION 'CONVERT_STRING_TO_TABLE'
  EXPORTING
    I_STRING               = str3
    I_TABLINE_LENGTH       = 2000
  TABLES
    ET_TABLE               = jtab_imp.
* download file...
CALL FUNCTION 'DOWNLOAD'
   EXPORTING
     BIN_FILESIZE = FILESIZE
      FILETYPE  = 'BIN'
    IMPORTING
      ACT_FILENAME = ACT_FILENAME
    TABLES
      DATA_TAB = jtab_imp
   EXCEPTIONS
     INVALID_FILESIZE = 1
     INVALID_TABLE_WIDTH  = 2
     INVALID_TYPE = 3
     NO_BATCH = 4
     UNKNOWN_ERROR  = 5
     GUI_REFUSE_FILETRANSFER  = 6
     CUSTOMER_ERROR      = 7
     OTHERS                        = 8.

regards,darek

Re: PDF to BASE64 conversion

former_member220911 — Mon, 25 May 2009 08:55:21 GMT

Hi Darek,

Thanks for your reply but my code is similar than yours.

Finnaly I find a solution. The problem is on my PDF codepage. I put the following code instead of cl_http_utility=>encode_base64

 
CONSTANTS:
    lc_op_enc TYPE x VALUE 36.
  DATA:
    l_len TYPE i,
    l_xstr TYPE xstring,
    lr_conv TYPE REF TO cl_abap_conv_out_ce.

  lr_conv = cl_abap_conv_out_ce=>create( encoding = '4103' ).
  l_len = STRLEN( i_plaintext ).
  lr_conv->write( data = i_plaintext n = l_len ).
  l_xstr = lr_conv->get_buffer( ).

  CALL 'SSF_ABAP_SERVICE'
    ID 'OPCODE' FIELD lc_op_enc
    ID 'BINDATA' FIELD l_xstr
    ID 'B64DATA' FIELD r_return.

Regards,

David.