Re: IBM i code page / CCSID

Cant you use iconv() to convert between tables? Get a conversion table from localccsid to ccsid37 and vice versa? Anytime you need to work with the square brackets make sure you run the conversion for the buffer?

We do it all the time for ASCII to EBCDIC conversions and while this is EBCDIC to EBCDIC it is the same thing.

If you need some sample code I can share, but it won't be specific to your needs as I am not sure exactly where the problem occurs except for the program you posted about.

Chris...

-----Original Message-----
From: C400-L <[email protected]> On Behalf Of Niels Liisberg
Sent: December 8, 2022 1:04 PM
To: Bare Metal Programming IBM i (AS/400 and iSeries) <[email protected]>
Subject: Re: [C400-L] IBM i code page / CCSID

also set your job to that ccsid

CHGJOB CCSID(37)

And if you are using a 5250 - the remember to set that to to 37

Also the source file - it using so , has to be set to that ccsid ...



On Thu, Dec 8, 2022 at 12:19 AM Roger Lacroix <[email protected]>
wrote:

> All,
>
> I'm a newbie programmer on IBM i (OS/400) and I need a little bit of help.
>
> I'm having a weird problem with EBCDIC and square brackets, pretty 
> much as described here:
>
> https://www.ibm.com/support/pages/what-impact-changing-qccsid-shipped-
> 65535-another-ccsid
>
> Recently, a customer was trying out a program but it was not working. 
> It took a couple of days to realize that they were running their 
> system on a different code page. At first, I thought I would add their 
> code page to the hard-coded list but then I thought that solution was 
> stupid and started hunting for a proper solution.
>
> I decided that what I needed was a lookup table based on the code page
> (CCSID) and the HEX values for the square brackets. The trick was 
> figuring out how to get the code page from the OS (operating system).
> After what felt like a millions searches, I can across the nl_langinfo 
> subroutine. It is available on AIX, Linux, IBM i and z/OS. If you call 
> nl_langinfo subroutine with the parameter of CODESET then it will 
> return the code page (aka code set, CCSID) as a string.
>
> Next, I found 101 EBCDIC code pages and created a lookup table of the 
> square brackets in sorted order by code page. Finally, I created a 
> routine to issue the nl_langinfo subroutine and then perform a binary 
> search of the lookup table and set the correct square brackets for the 
> program to use.
>
> I found what I thought was a solution by using the 
> nl_langinfo(CODESET) call as detailed here:
>
> https://www.ibm.com/docs/en/i/7.5?topic=functions-nl-langinfo-retrieve
> -locale-information
>
> I wrote about the lookup table and routine here:
> https://www.capitalware.com/rl_blog/?p=7060
>
> When I run a test program with the nl_langinfo(CODESET) call on my 
> system, it returns 37 for the code page/CCSID.  When I run the 
> following commands on my system:
>
> DSPSYSVAL SYSVAL(QCCSID)
> DSPSYSVAL SYSVAL(QCHRID)
>
> They both return code page/CCSID of 37.
>
> So I gave the test program to the customer.  When they run the program 
> it returns 37 for the code page/CCSID.  But when the customer run 
> those
> 2 "DSPSYSVAL SYSVAL" commands, they return 273 for code page/CCSID. 
> And yes they are in Europe.
>
> So, my question is to those IBM i experts, what am I doing wrong. Note:
> The code that I am using was posted in my blog posting.  I don't 
> understand why it didn't return 273 for code page/CCSID.
>
> Is there a better way from a C program to retrieve the correct code 
> page/CCSID from the IBM i system?
>
> Help please.
>
> Regards,
> Roger Lacroix
> Capitalware Inc.
>
>
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