Hi all,

Yesterday I think I asked a a bit more than what I should have. Since then I have broken down the problem considerably, and here is where I'm at.
I have some variables that I need to modify then replace. They are

$runset{"POWER-NODE"}="vdd,vdda";
$runset{"GROUND-NODE"}="vssa,vss";
[download]

Now I have a line in a text file that I want to modify

$line = "*.PIN foo:I bar:O vdd:I vssq:I vssa:O";
[download]

The rules are simple

For any variables in $runset{"POWER-NODE"} that match the core word in $line will become "variable:P" so in this case $runset{"POWER-NODE"} vdd becomes vdd:P and vdda becomes vdda:P in $line

This would produce..

$line = "*.PIN foo:I bar:O vdd:P vssq:I vssa:O";
[download]

For any variables in $runset{"GROUND-NODE"} that match the core word in $linewill become "variable:G" so in this case $runset{"GROUND-NODE"} vssa becomes vssa:G and vss becomes vss:G in $line

This would produce..continuing from previous

$line = "*.PIN foo:I bar:O vdd:P vssq:I vssa:G";
[download]

Notice that only those variables that exist in both $line and $runset{pwr/gnd} were changed. Also I don't want to actually change the $runset variables only temporarily modify them.

I hope this is simpler to understand. I think this isn't tough but I am really stuck on this thing..
Any help would be very much appreciated. Thanks to every one so far that has tried to read through my kludge and help me out

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