Here's a simple parser for you:

$/ = "\n-";
open INPUT, "lp.attr" or die "... $!";  # or whatever
while (<INPUT>) {
  chomp;
  my ($name,$attr) = split /\s*:\s*/, $_, 2;
  $name = "-$name" if $. != 1;  # the first record has a -
  my @attrs = split /,\s+/, $attr;
  $CONFIG{$name} = (@attrs == 1) ? $attrs[0] : \@attrs;
}
close INPUT;
[download]

This would create a hash, %CONFIG, where the keys are strings like '-input-trays-supported' or '-descriptor', and the values are either strings, or references to an array of strings: $CONFIG{'-input-trays-supported'} is [ 'top', 'middle', 'bottom', ... ], and $CONFIG{-descriptor} is 'hp5si PS TCP Template'.

$_="goto+F.print+chop;\n=yhpaj";F1:eval