local $/=undef;
my $DataToParse = <DATA>;
...
exit();
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As GrandFather points out, you should be cautious about slurping files. When you do use slurping it is worth getting into the habit of making the local $/=undef; really local rather than applying from that point in your script onwards so as to avoid nasty surprises further down your code. You can do this either inside a bare code block

my $DataToParse;
{
    local $/;
    $DataToParse = <DATA>;
}
[download]

or, perhaps better, a do block

my $DataToParse = do
   {
       local $/;
       <DATA>;
   };
[download]

I hope this is of interest.

Cheers,

JohnGG

Update: Just noticed a horrible cut'n'paste error, there should not have been a my in the bare code block. Corrected.