I have a bit of code that I am working on to encode a text file by replacing each word with a binary code representing it (after building an index of all words in the file) in an effort to save storage (and, of course, to display it later).

I am trying to get the binary code to the file and have tried many different things including printf and pack and have not been able to produce the results that I am after.

Here is my current encode.pl code: 

#!/usr/bin/perl

@lines = <>;

#print "Number of lines; $#lines\n";

$x = 0;
foreach $ln (@lines) {
    @words = split /\s+/, $ln;
    foreach $word (@words) {
        $index{$word} = $x++;
        $count{$word}++;
    }
}

print "-=INDEX=-\n";
foreach $key (keys %index) {
    #print "[$key] $index{$key}\n";
    #$bkey = pack("C*",$index{$key});
    #print $key . chr(0) . $bkey . chr(0);
    printf "%s%c%x%c", $key, chr(0), $index{$key}, chr(0);
}
print "\n";

print "-=CONTENTS=-\n";
foreach $ln (@lines) {
    @words = split /\s+/, $ln;
    foreach $word (@words) {
        #print $index{$word} . " ";
        #$bword = pack("C*",$index{$word});
        #print $bword . chr(0);
        printf "%x%c", $bword, chr(0);
    }
    print "\n";
}

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I would be happy for any all all input on this problem.

Ed

In reply to help needed on encoding a text file by bfdi533

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