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Проверка расширения файла



 
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den
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Joined: 11 Oct 2007
Posts: 103
PostPosted: Tue Feb 05, 2008 11:57 am    Post subject: Проверка расширения файла Reply with quote
На селекционном экране задается полный пусть к файлу. Он должен быть только txt. Как проверить?
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Armann
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Joined: 01 Jan 2008
Posts: 422
Location: Moscow
PostPosted: Tue Feb 05, 2008 12:06 pm    Post subject: Reply with quote
1. Проверяйте расширение введенного файла в секции at selection screen ...
2. Чтобы получить расширение из полного имени - попробуйте ФМ PC_SPLIT_COMPLETE_FILENAME
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den
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Joined: 11 Oct 2007
Posts: 103
PostPosted: Tue Feb 05, 2008 1:26 pm    Post subject: Reply with quote
Armann, спасибо за полезную функцию.

Code:
PARAMETER: p_filename LIKE PCFILE-PATH.

DATA: DRIVE LIKE PCFILE-DRIVE,
          PATH LIKE PCFILE-PATH,
          EXTENSION(3).

AT SELECTION-SCREEN AT p_filename.

CALL FUNCTION 'PC_SPLIT_COMPLETE_FILENAME'
  EXPORTING
    COMPLETE_FILENAME = p_filename
*CHECK_DOS_FORMAT =
  IMPORTING
     DRIVE = DRIVE
     EXTENSION = EXTENSION
*NAME =
*NAME_WITH_EXT =
     PATH = PATH
  EXCEPTIONS
    INVALID_DRIVE = 1
    INVALID_EXTENSION = 2
    INVALID_NAME = 3
    INVALID_PATH = 4
    OTHERS = 5.

IF EXTENSION NE 'TXT' AND EXTENSION NE 'txt'.
  MESSAGE I002 WITH 'The file name is invalid'.
ENDIF.
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vga
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Age: 175
Joined: 04 Oct 2007
Posts: 1218
Location: Санкт-Петербург
PostPosted: Tue Feb 05, 2008 2:01 pm    Post subject: Reply with quote
Еще вариант, использовать для выбора имени файла ФМ, который не позволит ввести иное расшиерние, кроме заданного

Code:
DATA: file_filter TYPE string VALUE 'TXT files (*.txt*)|*.txt*'.

CLEAR wf_filename .
CALL METHOD cl_gui_frontend_services=>file_open_dialog
  EXPORTING
    window_title = 'Select the File'
    DEFAULT_EXTENSION = cl_gui_frontend_services=>FILETYPE_TEXT
    DEFAULT_FILENAME =
    FILE_FILTER = file_filter
    INITIAL_DIRECTORY =
    MULTISELECTION =
    CHANGING
    file_table = wf_filetab
    rc = wf_filerc
    USER_ACTION =
  EXCEPTIONS
    file_open_dialog_failed = 1
    cntl_error = 2
    error_no_gui = 3
    not_supported_by_gui = 4
    OTHERS = 5.
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Armann
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Joined: 01 Jan 2008
Posts: 422
Location: Moscow
PostPosted: Tue Feb 05, 2008 2:46 pm    Post subject: Reply with quote
den, вместо этого:
Code:
IF EXTENSION NE 'TXT' AND EXTENSION NE 'txt'.
  MESSAGE I002 WITH 'The file name is invalid'.
ENDIF.


Лучше напишите так:
Code:
TRANSLATE EXTENSION TO UPPER CASE.
IF EXTENSION NE 'TXT'.
  MESSAGE I002 WITH 'The file name is invalid'.
ENDIF.

Тогда вы будете абсолютно уверены, что если вдруг ФМ вернет расширение 'Txt' или 'tXt' - все отработает правильно
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