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  1.  Home
  2. RPG400-L
  3. April 2023

Re: Binary bit map in IBM i (was as/400)

Jesse G has a way to run PASE programs

[1]PaseCar-IBMi.png
[2]ThePrez/PaseCar-IBMi: Utilities to help
ILE programs call PASE
github.com

--
Bryan Dietz

On Apr 19, 2023, at 4:31 PM, Jon Paris <jon.paris@xxxxxxxxxxxxxx> wrote:

Thanks Jack.
Since it has been around a lot longer I should also mention Scott
Klement's UNIXCMD (https://www.scottklement.com/unixcmd/
<https://www.scottklement.com/unixcmd/>) it was originally implemented
as a SPECIAL file, but Scott may have updated it for Open Access.  He's
teaching a session on it at PowerUp.
Jon P.

On Apr 19, 2023, at 3:04 PM, Alan Campin <alan0307d@xxxxxxxxx> wrote:

Sorry. I don't think I was clear. I was looking for an example of how
you

are calling python or some other PC language from RPG.

On Wed, Apr 19, 2023, 9:42 AM Jon Paris <jon.paris@xxxxxxxxxxxxxx
<mailto:jon.paris@xxxxxxxxxxxxxx>> wrote:

I wasn't thinking of a specific example - more that most of these
kinds of

things (like ISO 8583 processing) have been done before and
invariably

produce a number of packages/examples like this:

https://github.com/ducminhgd/python-ISOMessage8583/blob/master/ISO8583/ISO8583.py
<https://github.com/ducminhgd/python-ISOMessage8583/blob/master/ISO8583/ISO8583.py>

<

https://github.com/ducminhgd/python-ISOMessage8583/blob/master/ISO8583/ISO8583.py
<https://github.com/ducminhgd/python-ISOMessage8583/blob/master/ISO8583/ISO8583.py>>

which I found by doing a google search for "iso bitmap 8583 python
code

example" - substituting Java, PHP or node for python produces
similar

results.

I was mostly trying to make the point to the OP that we can't say
what the

"best way" to process the bitmap is without knowing _what_ they want
to do

with it.

Jon P

On Apr 19, 2023, at 11:52 AM, Alan Campin <alan0307d@xxxxxxxxx>
wrote:

" And then of course you could always call PHP, Python, node from
RPG to

perform the operation."

Can you point me to an example of doing this?

On Wed, Apr 19, 2023 at 8:43 AM Jon Paris
<jon.paris@xxxxxxxxxxxxxx>

wrote:

You can't map binary values to EBCDIC; it wouldn't help if you
could.

You just need to use RPG's bitwise operations %BITxxx against
the bitmap

field.

However - looking at the definition of ISO8583 bitmaps here:

https://en.wikipedia.org/wiki/ISO_8583 <

https://en.wikipedia.org/wiki/ISO_8583> it might be simpler to
convert

the whole bitmap string to an array by repetitively dividing by
zero.  A

value of 1 indicating that the field in question is present.

It really depends on what you want to do.  For example, using
the

%BITxxx

BIFs would be the most useful if you just want to know "does the
message

include field x" and the division approach is better if you need
to know

which fields need to be processed.

It is also possible that there is an underlying MI instruction
that may

be

surfaced that will perfomr the equivalent iof the array
operation but

I'm

not familiar with it.

And then of course you could always call PHP, Python, node from
RPG to

perform the operation.

Why the heck in this day and age ISO are bothering with bitmaps
is

beyond

me but ...

Jon P.

On Apr 19, 2023, at 12:39 AM, krishna MAdiraju via RPG400-L <

rpg400-l@xxxxxxxxxxxxxxxxxx> wrote:

Hi,  I am facing difficulty in reading binary bitmap in
as/400.is

binary bitmap need to be converted to ebcidic?how ISO8583
 BINARY

BITMAP is

decoded  in as/400

thankskrishnaM

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References

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1. https://github.com/ThePrez/PaseCar-IBMi
2. https://github.com/ThePrez/PaseCar-IBMi

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