Re: "Conversion Error" when opening Stream File

[Bruce Vining <bvining@xxxxxxxxxx>]

Brad,

I would recommend changing over to O_CCSID from O_CODEPAGE. 

At 
http://www-03.ibm.com/servers/eserver/iseries/software/globalization/ccsid_list.html
 
you can find the definitions of the various CCSIDs supported by i5/OS.  If 
you look at CCSID 935 you will see that there are actually two code pages 
involved as 935 is an EBCDIC mixed SBCS/DBCS CCSID.  The two code pages 
are 836 for the SBCS code points and 837 for the DBCS code points.  There 
is no one O_CODEPAGE to represent this.  Likewise CCSID 1381 is a PC-data 
mixed byte CCSID built on code page 1115 and 1380.  Again there is no one 
O_CODEPAGE to represent this. 

When open() was initially introduced the only support was for O_CODEPAGE 
(and mixed byte encodings were not supported for mapping purposes).  A few 
releases later open() was enhanced with O_CCSID in order to provide better 
support for mixed DBCS environments.

Hope this helps,
Bruce




"Brad Stone" <brad@xxxxxxxxxxxx> 
Sent by: rpg400-l-bounces@xxxxxxxxxxxx
10/26/2006 10:21 AM
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Re: "Conversion Error" when opening Stream File






After looking into this further, it appears we're
specifying to open the file with O_CODEPAGE and specifying
1381 for that value.

Now, after reading the docs more closely, if you specify a
code page, it will use that to find a CCSID.  So, the
problem could be that there is no code page 1381 and this
makes an invalid CCSID causing this error.

Now, I've tried to search for a table of code pages and
their related CCSIDs, but not having much luck.  Anyone
know where this beast may be found?

Thanks!

Brad

On Wed, 25 Oct 2006 22:04:29 -0500
 "Brad Stone" <brad@xxxxxxxxxxxx> wrote:
> This sort of falls back to the DBCS issues I'm having
> with
> a client.
>
> Anyhow, we have physical file containing all text, and a
> CCSID of 935.  One field in the PF of type "O".  The text
> contains some DBCS chinese characters.
>
> Now, we're trying to read this file and write it to a
> stream file using the IFS APIs. 
>
> For the open API we're specifing a CCSID of 1381.
>
> But, on the open API call, we're getting a "Conversion
> error" message and the job fails.  The error actually
> ows
> the line number of the error as the definition for the
> open
> API itself instead of the actual call, though.  (odd, I
> thought it would have been on the call).
>
> Now, we've succesfully taken this PF and copied it to a
> stream file using CPYTOIMPF, and that works fine.  We
> specify *STDASCII as the "to" CCSID and it automatically
> creates it as 1381. 
>
> But, we need to use a program to do the conversion to a
> stream file because we do maniuplate some of the data as
> we're going through it.
>
> This generic "conversion error" is sort of driving me
> nuts,
> though, as I can't find any information on it except "the
> CCSID is invalid".
>
> Well, if CPYTOIMPF can do it, shouldn't I be able to?  :)
>
> Thanks for any assistance with this.
> -- 
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Bradley V. Stone
BVS.Tools
www.bvstools.com