I am parsing a text file that can have a varying number of headers and footers that I want to ignore. The script that I wrote works, but it opens and reads the input file twice. I feel there must be a better way, where I only have to open and read the file once. Any help on this would be great!

My code:


$numHeaders= $ARGV[0];
$numFooters= $ARGV[1];

#count number of lines in file
open (INPUT, $l_infile);
     for (<INPUT>){};
     $numLines= $.;
close(INPUT);     

open (INPUT, $l_infile);

     while(<INPUT>) 
     {
         my @fields = split "," , $_;
      
         if ($. != $numHeaders && $. <= $numLines-$numFooters)
            {
             # do parsing work and print
            }
     }
     
close (INPUT);

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In reply to More efficient way to exclude footers by babysFirstPerl

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