arabic alphabet ... how to deal with?

[Anonymous Monk]

Dear monks I have a Persian text and the list of stop words, I would like to remove all stop words but the results is not satisfactory. here is my code:

open (STOPWORDS, $ARGV[1]) || die "Error opening the stopwords file\n"
+;
$count = 0;
while ($word = <STOPWORDS>)
{
    chop($word);
    $stopword[$count] = lc($word);
    $count++;
}
close(STOPWORDS);

open (INFILE, $ARGV[0]) || die "Error opening the input file\n";
while ($line = <INFILE>)
{
    chop($line);
    @entry = split(/ /, $line);    
    $i = 0;
    while ($entry[$i])    
    {
        $found = 0;
        $j = 0;
        while (($j<=$count) && ($found==0))
        {
            if (lc($entry[$i]) eq $stopword[$j])
            {
                $found = 1;
            }
            $j++;
        }
        if ($found == 0)
        {
            print "$entry[$i]\n";
        }
        $i++;
    }
}
close(INFILE);

I cant put sample of my stop word list since it doesnt appear here, its one word per line and my input text is not tokenized and its just a raw uni-code text. any idea how can i make it work? Thanks in advance.