ASCII/EBCDIC based codepages

[Tibarewal, Amit]

Hi,

I am looking for an API/function which can list all the ASCII/EBCDIC
based codepages.

One way I can think of doing it is by converting some ASCII/EBCDIC
characters from each codepage to Unicode and back. Then see if the
characters are still ASCII/EBCDIC. Not sure if this will work always.

Is there any other way of doing it? Thanks in advance!

Regards,
Amit


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[John B Young]

Amit,

My experience regarding ASCII/EBCDIC has been on the z/OS platform, with
ICU deployed in the Unix System Services (USS) environment.

I agree, trying to find those code pages that are EBCDIC based is not very
straightforward.

I have worked the problem from a reverse approach on z/OS.  I've used some
documentation related to the z/OS C/C++ compiler.  Here's a link.  I've
found this most helpful.

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/CBCPG170/APPENDIX1.4.1?SHELF=CBCBS171&DT=20060501163751

John B. Young
IBM Tivoli Identity Manager
Tivoli Software, IBM Software Group
Notes: John B Young/Irvine/IBM@IBMUS
Internet: jbyoung@...
Office Phone: [phone], T/L: 925-5218
"In theory, theory and practice are the same.  In practice, theory and
practice are different." - unknown



"Tibarewal, Amit" <atibarewal@...>
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[icu-support] ASCII/EBCDIC based codepages






Hi,

I am looking for an API/function which can list all the ASCII/EBCDIC
based codepages.

One way I can think of doing it is by converting some ASCII/EBCDIC
characters from each codepage to Unicode and back. Then see if the
characters are still ASCII/EBCDIC. Not sure if this will work always.

Is there any other way of doing it? Thanks in advance!

Regards,
Amit


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[George Rhoten]

Generally, determining which codepages are EBCDIC or ASCII based is easy.

If \u0020 roundtrip converts to \x20, then it's ASCII (or one of its
variants)
If \u0020 roundtrip converts to \x40, then it's EBCDIC (or one of its
variants)
\u0020 can convert to other values, or it may not convert at all.  So you
should be aware of those conditions.

I use a similar method when displaying the ASCIIness or EBCDICness of each
codepage in Converter Explorer http://demo.icu-project.org/icu-bin/convexp 
 If you're looking at ICU's Converter Explorer, you will want to look at
the "Is ASCII [\x20-\x7E] compatible?" value when you zoom in on a
specific converter in ICU.

George Rhoten
IBM Globalization Center of Competency/ICU  San José, CA, USA
http://www.icu-project.org/



John B Young/Irvine/IBM@IBMUS
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05/14/2007 03:16 PM
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Re: [icu-support] ASCII/EBCDIC based codepages






Amit,

My experience regarding ASCII/EBCDIC has been on the z/OS platform, with
ICU deployed in the Unix System Services (USS) environment.

I agree, trying to find those code pages that are EBCDIC based is not very

straightforward.

I have worked the problem from a reverse approach on z/OS.  I've used some

documentation related to the z/OS C/C++ compiler.  Here's a link.  I've
found this most helpful.

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/CBCPG170/APPENDIX1.4.1?SHELF=CBCBS171&DT=20060501163751


John B. Young
IBM Tivoli Identity Manager
Tivoli Software, IBM Software Group
Notes: John B Young/Irvine/IBM@IBMUS
Internet: jbyoung@...
Office Phone: [phone], T/L: 925-5218
"In theory, theory and practice are the same.  In practice, theory and
practice are different." - unknown



"Tibarewal, Amit" <atibarewal@...>
Sent by: icu-support-bounces@...
05/14/2007 03:35 AM
Please respond to
ICU support mailing list <icu-support@...>


To
<icu-support@...>
cc

Subject
[icu-support] ASCII/EBCDIC based codepages






Hi,

I am looking for an API/function which can list all the ASCII/EBCDIC
based codepages.

One way I can think of doing it is by converting some ASCII/EBCDIC
characters from each codepage to Unicode and back. Then see if the
characters are still ASCII/EBCDIC. Not sure if this will work always.

Is there any other way of doing it? Thanks in advance!

Regards,
Amit




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Download DB2 Express C - the FREE version of DB2 express and take
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