[SOLVED] What is the equivalent of Java's System.out.println() in Progress ABL?

What is the equivalent of Java's System.out.println() in Progress ABL?

I'm trying to implement Java's System.out.println() method in Progress ABL.

The closest functionality seems to be:

test.p:

MESSAGE "hello world" SKIP.

I ran the following tests to see if it works:

Windows
FAIL    C:\opt\prgs\dlc117\bin\prowin   -b -p test.p
OK      C:\opt\prgs\dlc117\bin\prowin   -b -p test.p | % ToString
OK      C:\opt\prgs\dlc117\bin\_progres -b -p test.p
OK      C:\opt\prgs\dlc117\bin\_progres -b -p test.p | % ToString

Unix
TODO

So in the end, I'd implement it like this:

METHOD STATIC PUBLIC VOID println(i_cText AS CHAR):

    MESSAGE i_cText SKIP.
    PAUSE 0.
    
    CATCH oError AS CLASS Progress.Lang.Error:
        /* Suppress error because MESSAGE doesn't support NO-ERROR. */
    END.
END.

I haven't found a way to know when the MESSAGE will fail. I tried checking OPSYS, TERMINAL and SESSION:BATCH-MODE but they are not reliable. I'd need to know if default output exists but how?

Solution

AFIAK you always have to redirect in order to execute in batch. Your commandline without redirecting results in

---------------------------
Error
---------------------------
** Attempt to write with no current output destination. (516)
---------------------------

Once you redirect, code below will write to stdout.

put unformatted "put Hello world".
message "message Hello world".
display "display Hello world".
quit.

you can use | tee on linux or | % ToString in powershell result

prowin.exe -b -p .\helloworld_stdout.p | % ToString
put Hello world
message Hello world

display Hello world