Do a search on CPAN to see if you find anything useful there. PDF::CAM seems to have a couple of functions that might work.
Extracting the layout from a PDF files into a text file might still be problematic. It will be problematic if the page does not contain text at all, but contains a graphic image of a page instead. You would need to use some sort of OCR solution then.
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Want more info? How to link or
or How to display code and escape characters
are good places to start.