format.cgi

 

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#!/usr/bin/perl

@pairs = split(/&/, $ENV{'QUERY_STRING'});

foreach $pair (@pairs)
{
    ($key, $value) = split (/=/, $pair);
    $key =~ tr/+/ /;
    $key =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
    $value =~ tr/+/ /;
    $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
    $value =~s/<!--(.|\n)*-->//g;

    if ($formdata{$key})
    {
        $formdata{$key} .= ", $value";
    }
    else
    {
        $formdata{$key} = $value;
    }
}


print "Content-type:text/html\n\n";

$price = $formdata{'price'};
$tax = $formdata{'tax'}/100;

$salestax = $price * $tax;

$formattax = sprintf("\$%.2f", $salestax);

print "You'll have to pay $formattax in sales tax, unformatted it would look like $salestax";

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