Definitive List of X Values for Special Characters

[Former Member]

Hi

I'm currently investigating converting special characters for a unicode conversion project

eg I know that type x value '09' is the same as CL_ABAP_CHAR_UTILITIES=>HORIZONTAL_TAB, though I have no idea what 58 and FFFFFF are.

Is there a definitive list of what all these values represent anywhere?

Many Thanks

Chris

[nils_buerckel]

Hi Chris,

1) 7-bit ASCII characters:

-Non- Unicode:

Description of control characters with ASCII hex codes:

http://en.wikipedia.org/wiki/Control_character

- Unicode

In general characters with ASCII codes 00 to 7F (including the control chars) are equivalent to the first 127 Unicode codepoints which are U0000 to U007F.

However there are different encoding schemes for Unicode - for SAP systems utf-16 big endian / utf-16 little endian and utf-8 are relevant.

In general you need to consider, that abap Unicode systems use utf-16 as basis. The endianess depends on the used Hardware (please refer to SAP note 552464 ).

Regarding hex codes this actually means for the mentioned US7ASCII characters (including control characters):

Unicode code point U+00nn:

ASCII --> nn

UTF-8 --> nn

utf-16 LE --> /x nn00

utf-16 BE --> /x 00nn

Example:

Horizontal Tab:

Unicode code point: U+0009

ASCII --> 09

UTF-8 --> 09

utf-16 LE --> /x 0900

utf-16 BE --> /x 0009

2) For other Non-control characters, please have a look at e.g.

a) Non-Unicode (ASCII):

http://service.sap.com/~form/sapnet?_SHORTKEY=01100035870000380759&_OBJECT=011000358700000456542007E

--> page 5 and following pages

b) Unicode: General Unicode chart (C0 Controls and basic latin):

http://www.unicode.org/charts/PDF/U0000.pdf

c) UTF-8 char table

http://www.utf8-chartable.de/

In addition please have a look at:

Unicode Enabling Guide:

--> Requirements of ABAP Programs in Unicode systems:

http://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/9047d09e-35da-2b10-c589-8c6b8aae8...

--> Page 45

Best regards,

Nils Buerckel

SAP AG

[Former Member]

Hi Nils

Many thanks for your help.