topic Re: ABAP Regular expressions in Application Development and Automation Discussions

ABAP Regular expressions

Former Member — Mon, 25 Oct 2010 06:27:56 GMT

Hello ABAPers ,

I have to restrict my string to the char's mentioned below :

A to Z

Ä Ö Ü

a to z

ä ö ü

ß 0 to 9

! " § % & / ( ) = ' + * , ; . : -

Am using the following code to do tht but it doesn't work . Would appreciate any help.

gv_string = 'ab1@'.
gv_pattern = '[A-Za-z0-9!"§%&/()=+*,;.:-ß]*'.

TRY.
    CREATE OBJECT gx_regex
      EXPORTING
        pattern = gv_pattern.
  CATCH cx_sy_regex .
ENDTRY.


TRY.
    CREATE OBJECT gx_matcher
      EXPORTING
        regex = gx_regex
        text  = gv_string.
  CATCH cx_sy_matcher .
ENDTRY.
*gt_match_result2 = gx_matcher->find_all( ).

match = gx_matcher->match( ).

Thanks ,

Sri

Edited by: Matt on Oct 25, 2010 4:27 PM - added tags

Re: ABAP Regular expressions

nabheetscn — Mon, 25 Oct 2010 06:44:42 GMT

Take a globalvariable and assignit all values and in if clause use CP to implement the same.

Nabheet

Re: ABAP Regular expressions

Former Member — Mon, 25 Oct 2010 13:20:30 GMT

Hello Srivijaya,

You should modify your pattern : since you want any character in the list provided, you should encapsulate it into brackets :

'[A-Za-z0-9!"§%&/()=+*,;.:-ß*]'

But since you have more than one character, you should repeat it n times with a star (*) after it :

'[A-Za-z0-9!"§%&/()=+*,;.:-ß*]*'

Last thing, '-' is a special character which means for an interval, so you have to escape it with a basckslash :

'[A-Za-z0-9!"§%&/()=+*,;.:-ß*]*'

And in order to test this easily, you can directly use it like this :

DATA : gv_string  TYPE string,
       gv_pattern TYPE string,
       match      TYPE flag.

gv_string  = 'ab1@'.
gv_pattern = '[A-Za-z0-9!"§%&/()=+*,;.:-ß*]*'.

TRY.
    CALL METHOD cl_abap_matcher=>matches
      EXPORTING
        pattern = gv_pattern
        text    = gv_string
      RECEIVING
        success = match.
  CATCH cx_sy_regex.
    WRITE : 'Unable to evaluate pattern.'.
    EXIT.
ENDTRY.

Best regards,

Samuel