ABAP regex hex implementation

Former Member — Thu, 31 Jan 2013 16:22:42 GMT

hi!

for data validation, we use regex rules. But I have a question to the implementation in ABAP.

To validate a string is ASCII, regex allows to provide the full charset or just the hex-value from-to. But ABAP does not threat this as expected. See the code below.

DATA: lv_str TYPE string VALUE
       ' !"#$%&''''()*+,-./0-9:;<=>?@ABCDEFGHIJKLMNOPQRZTUVWXYZ0123456789[|]^_`a-z]{|}~',
       lv_regx_str TYPE string VALUE
       '[^\ \!\"\#\$\%\&\''''\(\)\*\+\,\-\.\/0-9\:\;\<\=\>\?\@\A-Z\\\[\|\]\^\_\`\a-z\]\{\|\}\~]',
       lv_regx_hex TYPE string VALUE
       '[^\x20-\x7F]',
 
       lv_str_str TYPE string,
       lv_str_hex TYPE string.
 
 lv_str_str = lv_str.
 lv_str_hex = lv_str.
 
 REPLACE ALL OCCURRENCES OF REGEX lv_regx_str IN lv_str_str WITH '?'.
 REPLACE ALL OCCURRENCES OF REGEX lv_regx_hex IN lv_str_hex WITH '?'.
 
 IF lv_str_hex NE lv_str_str.
   WRITE: 'Hex:'.
   WRITE: lv_str_hex.
   WRITE /: 'Str:'.
   WRITE:  lv_str_str.
 ENDIF.

The output of this program is:

Hex:

?????????????????0?9:;<=>?@ABCDEFGHIJKLMNOPQRZTUVWXYZ0123456789[?]^_`a??]????

Str:

!"#$%&''()*+,-./0-9:;<=>?@ABCDEFGHIJKLMNOPQRZTUVWXYZ0123456789[ ]^_`a-z]{ }~

So the hex regex works in general: there is no exception and standard characters A-Z and 0-9 are untouched. But chars like !$%& are not accepted.

Any ideas?

Thanks,

Roland

Re: ABAP regex hex implementation

former_member491621 — Fri, 01 Feb 2013 18:04:57 GMT

Hi Roland,

Please check the below link for reference. You might get your answer

http://help.sap.com/abapdocu_70/en/ABENREGEX_SYNTAX_SPECIALS.htm

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ABAP regex hex implementation

Re: ABAP regex hex implementation