Your post was not a question, it was a statement declaring that you have vague problem X dealing with parsing files of unspecified format. You gave no details as to what produced the files in question, what kind of "prn file" it is (PostScript could be considered a "prn file", or some sort of HP PCL file, or . . .), what platform you're on (one presumes Wintendo; which rules out easy access to things like piping through ps2ascii if it were PostScript, for example), what terms you've searched for on CPAN . . . .

Having given my reasoning why you got the H(N)TAAQ pointer, I'll just add a rather puerile chanting of "Scoreboard" while pointing out that the current relative reputations (presently my node at +6 to your OP at -4) certainly bear out that I'm not the only one that didn't think it was that clear of a question. I will certainly grant though that your title is light-years beyond than some of the sub-literate, incoherent attempts at question titles that have mushroomed in popularity recently.

With that, I'm on hiatus for a bit. I'm burned on the increasing level of inanity evidenced by questions here recently. I no longer feel much compulsion to tease the necessary details from the nebulous query of every third or fourth poster. And I've got other things to spend my time reading anyhow.

I(?:'ll| may) be back in a few weeks; we'll see which alternative winds up matching then.