Re: RdLine with variable length field

If you are referring to the rdline() routine from the socket tutorial (I guess that's what you're referring to... took me about 30 mins to figure that out... I wrote that routine 12 years ago, and have scarcely looked at it since.) then, no, it does not work with VARYING fields. At least not *directly*.

You could make it work by doing something like this:

D VARPREF C CONST(2)

%len(Input_String) = %size(Input_String) - VARPREF;
len = RdLine( cli
: %addr(Input_String) + VARPREF
: %len(Input_String)
: *On );
if (len < 1);
%len(Input_String) = 0;
else;
%len(Input_String) = len;
endif;

All this does is set the length of the input_string to it's maximum length, then get the address of the data portion of the VARYING field (by adding 2 to the start, skipping the length bytes). Then when it's done, setting the length to the proper length for what was received.

Cumbersome, yes... but you can package it into a subprocedure called "rdlinev" or something, so you only have to code it once.

Though, personally, I'd suggest eliminating rdline as it's extremely inefficient.


GKern@xxxxxxxxxxxxxxxx wrote:

I have the following code in which I encounter two problems. First when viewing the Input_String variable in debug, only the last 54 bytes are shown - the first two are truncated. (The string sent contains 56 bytes). The debugger monitor says the field is 56 bytes, as does the dump listing. Second the "If %Len(Input_String) < 1 Or %Len(Input_String) > 56;" triggers an RNX0115 (Length of varying length variable is out of range). Does Rdline not work with a variable length field? (The RdLine code is from Scott Klements tutorial.)

D Input_String S 56A Varying
If RdLine(cli: %addr(Input_String):56:*On) < 0;
Callp Die('Error calling RdLine()');
Callp close(cli);
Return;
Endif;

If %Len(Input_String) < 1 Or %Len(Input_String) > 56;
Error = Yes;
Return_String = %Trim(Return_String) + Error00;
LeaveSr;
EndIf;
Thanks!

Regards, Jerry

Gerald Kern - MIS Project Leader
Lotus Notes/Domino Administrator
IBM Certified RPG IV Developer
The Toledo Clinic, Inc.
4235 Secor Road
Toledo, OH 43623-4299
Phone 419-479-5535
gkern@xxxxxxxxxxxxxxxx


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