Re: Assigning the actual length of a variable length field. -- RPG400-L


On 18/01/2007, at 12:56 AM, GKern@xxxxxxxxxxxxxxxx wrote:

I tried your suggestion and still got the same results - a single 64k
message.

Then you're not doing it properly. The VARYING variable *WILL* be setcorrectly using %TRIMR(fixed-variable). The fact that you get more datawritten to the file is a coding defect in your code probably caused bywhat values you specify on the write operation.

I also notice that there are two bytes prefixed to the data. I assume
those are the bytes that indicate the actual length of the data. I also
need to prevent that data from being prefixed to the actual data.

These two bytes are the length of the varying data. If you examinethese bytes in hex you can verify the length of the data is correctafter the %TRIMR populates the variable.

If these bytes are being written into the data it's because that's whatyour code is telling the system to do. You're probably using IFS APIsand are providing the wrong length for the data and the wrong startingaddress for the data.

If you don't want these length bytes then specify a starting positionAFTER them. That is 2 bytes after the variable start. The length of thedata should be the %LEN() of the varying field. You're probablyspecifying the %SIZE of some other length value. That's what's causingthe wrong data to be written.

If you're writing a varying length buffer and you already have thelength available why are you using a VARYING variable. Seems verybackwards to me.


Regards,
Simon Coulter.
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