RE: Redirection control -- RPG400-L

rpg400-l-request@xxxxxxxxxxxx wrote:

4. RE: Redirection control (Scott Klement)

Now the question is becoming more academic. Are there programmatic ways
to control redirection? No need to pipe the results into RPG; I just
want to control the output location. From what I've seen, the answer is
currently "No, except for OVRPRTF for STDOUT and similar." Simply
grasping for straws. Ya' never know.


Perhaps you could use spawn() with the QIBM_USE_DESCRIPTOR_STDIO variable
set?  I haven't tried it, but from the documentation, it appears that you
could open up descriptors 0,1,2 with open(), and then spawn your C
program, telling it to use those descriptors...

It looks like you could even use pipe() (instead of open()) to pipe the C
program's output back to your RPG program.

Pretty cool, I should experiment with those...

Ya' know, put together with the VT APIs, Qp0zStartTerminal() might have some intriguing qualities. When STDOUT is sent to the terminal, an [Enter] key is required to end the session. OVRPRTF STDOUT to a DBF has no such restriction.

I haven't used pipe() but looked at it before posting. I didn't see an obvious way to "tell it (the sacrosanct C program) to use those descriptors", hence, the post.

For now, I guess it just has to wait. File output 'works'.

Tom Liotta

--
Tom Liotta
The PowerTech Group, Inc.
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Kent, WA 98032
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