I saw your post on the perl-beginners list, but deleted it, so I was hoping someone else would reply and I could work off that, so I'm glad you posted it here, too.

Here's my take: 

# parse variable assignments out of the file
while ($ebuildcontents =~ /\b([-A-Z0-9_]+)=\"(.*?)\"{1}?/sgc) {
  $ebuildvars{$1} = $2;
}

[download]
I'm curious about your \"{1}? part there. Are quotes optional? I'd need to see how the config file is formatted, to help you extract these variables appropriately. But let's move onto the troublesome part: 
foreach (keys %ebuildvars) {
  $ebuildvars{$_} =~ s/\$\{?([-A-Z0-9_]+)\}?/$ebuildvars{$1}/gs;
}

[download]
The problem is that if VAR1 = "say $VAR2" and VAR2 = "hi $VAR3" and VAR3 = "jeff", you want to be able to expand ALL of these, so you get VAR1 = "say hi jeff", VAR2 = "hi jeff", and VAR3 = "jeff", right?

If so, let me know, and I'll help you write a solution. It's kind of related to a dependency tree...

_____________________________________________________
Jeff[japhy]Pinyan: Perl, regex, and perl hacker, who'd like a job (NYC-area)
s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;

In reply to Re: simulating bash by japhy
in thread simulating bash by agaffney

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