Perl's I/O layers include support for input and output from a scalar. When you read a record with <$fh>, you are reading the next line from $string. 

open($fh, "<", \$string);  # read only

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the handle behaves in all respects like regular filehandles, so all I/O functions work, such as seek, truncate, sysread.

hm,now i am not so sure how this will help you but I hope it does

I found this trick from the cookbook receipt on perl.com.

In reply to Re: pretending that the contents of a variable are files by Qiang
in thread pretending that the contents of a variable are files by marcokuma

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