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Re: Using IDL from a perl script [message #56407]

Mon, 22 October 2007 13:05

James Everton
Messages: 19
Registered: November 2005

Junior Member

On Oct 20, 5:16 pm, jkj <ke...@vexona.com> wrote:
> On Oct 19, 1:02 pm, James Everton <james.ever...@gmail.com> wrote:
>
>> Hi everybody,
>
>> I'm developing some web scripts in perl that interact with a database
>> through various pre-written IDL procedures here at my work. The
>> problem I'm having is getting arguments passed between the two.
>> Passing from the perl into the IDL code is easy enough because I'm
>> using the open( ) procedure and simply writing the strings as a block:
>
> I've done this a bunch and found it to be very useful... here's a bit
> more of what I find works:
>
> use IPC::Open2;
>
> $progName = "idl";
> open2(READIDL, WRITEIDL, $progName) or die "Could not begin \"$progName
> \"\n";
>
> # Then you can cause IDL to execute commands like this:
> print WRITEIDL "value = 13\n";
>
> # I find that output coming back from IDL is cluttered, so before
> # asking IDL to return a value I ask it to spit out "junk":
> print WRITEIDL "print, \"junk\"\n";
> while(!(<READIDL> =~ /junk/)){
>
> }
>
> # Now I can get the value I want back asking IDL to output it:
> print WRITEIDL "print, value\n";
> $value = <READIDL>;
> chomp($value);
>
> ...hope that helps,
> -Kevin

Thanks so much! Took me a while to get a feel for how the handles
were being set up, but it worked like a charm!
As for the IDL junk, I found that setting my $progName to 'idl &> /dev/
null' got rid of all the junk as well as compilation print outs.

Pipes are your friend :-)
- James

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[Message index]

		Re: Using IDL from a perl script By: James Everton on Mon, 22 October 2007 13:05
		Re: Using IDL from a perl script By: jkj on Sat, 20 October 2007 16:16
		Re: Using IDL from a perl script By: A. Sinan Unur on Fri, 19 October 2007 11:37
		Re: Using IDL from a perl script By: Michele Dondi on Fri, 19 October 2007 11:33

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