RE: Updating Text Data in a Stream File

Lseek() api will give the length of the *STMF. I expect there are other
apis that also return length. Using that, I'll take a look at ftruncate.

Thanks,

Keith


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of bvining
Sent: 15 July 2009 16:38
To: RPG programming on the IBM i / System i
Subject: Re: Updating Text Data in a Stream File

Have you looked at the ftruncate() API? If I understand you correctly
you could get the length of the *STMF, subtract 2, and truncate to that
length.
DSPF will continue to show trailing controls, but a DMP will show that
they are indeed gone.

Bruce

----- Original Message -----
From: "McCully, Keith (Insurance,Technology Services)"
<Keith.McCully@xxxxxxxxx>
To: "RPG programming on the IBM i / System i" <rpg400-l@xxxxxxxxxxxx>
Sent: Wednesday, July 15, 2009 10:02 AM
Subject: RE: Updating Text Data in a Stream File

Hi Dennis,

Sorry if my description was rather convoluted - I tried to keep it
simple!

Basically, CPYTOIMPF is appending to an ASCII Text file. The problem

is

that at the end of the file there the potential for a null line. I say
'potential' because whether you see an extra line depends on your text
viewing application. For example, iSeries Navigator Edit will show the
line but green screen EDTF will not - there have been a few posts on
this.

The null line is caused by the LF of the CRLF on the last data line

but

some applications can handle this while others can't.

What I have done, using a combination of RPG and QC2LE APIs, is to
replace the CRLF with 2 null bytes - only for the last row. This has
removed the null row from iSeries Navigator but currently unable to

test

using the Wintel app.

What I'm wondering is whether it's possible to simply remove the CRLF
for the very last row rather than doing the 2 null replace?

I hope that's a bit clearer.

Thanks,

Keith


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Dennis Lovelady
Sent: 15 July 2009 15:34
To: 'RPG programming on the IBM i / System i'
Subject: RE: Updating Text Data in a Stream File

Hi, Keith:

I have an ASCII Text File in the IFS (Code Page 819) populated by
CPYTOIMPF. A feature of this command is that line endings CR & LF are
created (ASCII 0D & OA). However, this creates a null line at the end

<snip>

Looking back through the archives shows a number of postings on this
topic and suggestions on how to resolve the problem. One way that I'm

Sorry, but I missed what "the problem" is, even on the third read.

Are

you referring to the 0x00 ending of the file (which is the standard

"end

of file" indicator for any text-based system) ? If so, what problem

is

the standard causing you? If not... would you mind enlightening

me/us?

Dennis Lovelady
http://www.linkedin.com/in/dennislovelady
--
"Where a calculator on the ENIAC is equpped with 18,000 vaccuum tubes
and weighs 30 tons, computers in the future may have only 1,000

vaccuum

tubes and perhaps weigh 1 1/2 tons."
-- Popular Mechanics, March 1949



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