I think it's standard M but I know GT.M can do this. I've been writing a
routine to take data from one file, clean up the format and output it to
another. A portion of the code follows:
s input="/home/Desktop/PATFILE.DAT"
open input:(readonly) <--- defines the read source
s output="/home/Desktop/output.csv"
open output:newversion <--- defines the write source
s delim=","
input use input:exception="g EOF" <--- "use" command tells m which
use input read x
s y=$Piece(x,delim,17)
s $Piece(name,delim,1)=$TR(y,"""")
use output write !,name
EOF close input <--- closes file when done
goto quit
In testing, I used the "$Principal" variable to do writes to the
terminal and reads from the 'input' file.
Mike Schrom
[EMAIL PROTECTED] wrote:
> Hi! I'm interested in being able to use different IO channels for Read
> and Write, **without** changing the IO in between. That is, that Reads
> would come from a certain device or host file or whatever, and Writes go
> somewhere else. (In case you're interested, the reason is to be able to
> write an automated testing wrapper for previously written code.) As far
> as I know, this can't be done in standard M, at least in the varieties
> I'm familiar with. But...
>
> I wondered if maybe some of the standard Fileman utilities offer such an
> ability. That is, can one initially set up input variables so that ^DIR
> or ^DIC, say, Read from one device and Write to another, or globals (a
> la EN^DDIOL), or some such?
>
> This is just a shot in the dark, I have no reason to think these
> utilities were set up this way, but maybe I'll get lucky.
>
> Thanks,
> Michael Reach
>
>
>
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