said:
>>
>>>-----BEGIN PGP SIGNED MESSAGE-----
>>
>>>Is there an elegant way to invoke a command from within REXX and have it
>>>redirect the output to the standard input? Right now I am using pipes as
>>>in the example:
>>
>>I suspect you want to invoke bar and pipe it's output to RXQUEUE:
>>
>> 'bar | rxqueue'
>>
>>Then use
>>
>> parse pull
>So I have to replace all of my calls to IO functions such as linein() and
>charin() with a 'parse pull somevariable' instruction? Then use
>'somevariable' in the expression in place of linein().
Yes, your logic will look something like:
do while queued() \= 0
parse pull line
/* Process line */
end
The logic is the same. queued() replaces lines() and pull replaces linein.
> It seems a lot easier to just replace the calls to linein() with calls
>to linein('\temp\tempjunk') and just use tempoarary files. Besides, I
It's your call. RXQUEUE will be faster because there will be no file I/O.
Makes a difference if you are filtering a lot of data.
>would have to re-do the logic of my program since I was already using a
>stack. I would have to check after each 'parse pull' to see if I had the
>re-directed STDIN or if I had stack data.
I'm missing something here. Doesn't queued() do the test you need or are
use already using the RXQUEUE?
As an aside, I've run across situations like yours in the past. There's
no direct solution. You could always do it the "standard" way and break
your script into 2 parts. Script1 does the setup and invokes:
'bar | script2'
Enjoy,
Steven
--
-----------------------------------------------------------
Steven Levine MR2/ICE #10183
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