RE: open ifs file for update

["tim" <tim2006@xxxxxxxxxxx>]

Thanks Charles. That's the way I ended up doing it.

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Charles Wilt
Sent: Tuesday, May 05, 2009 12:30 PM
To: RPG programming on the IBM i / System i
Subject: Re: open ifs file for update

Yes and no.

Remember, you're dealing with stream files.  There's no concept of
"first record".

The only way to add bytes to the beginning (or middle) of a stream
file is to create a new file from the bytes in the existing file
inserting the bytes you need where you need them.

It doesn't matter what platform/language you use.

Editors like notepad or EDTF copy the entire stream file to a buffer
(or temporary file) then copy it back out when you save.  Your program
will need to do basically the same thing.

HTH,
Charles


On Tue, May 5, 2009 at 12:04 PM, tim <tim2006@xxxxxxxxxxx> wrote:
> I am using ExtProc('write'), ExtProc('open'), etc to create a text file in
> the ifs. I was wondering if I can us this type of logic to update an
> existing text file. I need to update the first record of the text file
with
> summary information.
>
>
>
> Can this be done? Examples?
>
>
>
> Thanks.
>
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