#!/usr/bin/perl

use strict;
use warnings;

my $blacklist_file = "blacklist.txt";
my @blacklist_entries;

sub debug { print @_; }

sub read_blacklist {
    return 1 if @blacklist_entries;

    open( my $fh, '<', "$blacklist_file" )
      or debug( 1, "Can't read '$blacklist_file', $!\n" );
    my @lines = grep { !/^\s*\#/ } <$fh>;
    chomp @lines;
    close $fh;
    debug( "No blacklists?\n" ) unless @lines;

    foreach my $line (@lines) {
        $line =~ s/^\s*//;
        $line =~ s/\s*[^\\]\#.*//;
        next unless $line;
        push @blacklist_entries, $line;
    }
    debug( "No entries in blacklist file?\n" ) unless @blacklist_entries;

    return 1;
}

sub testspam {
    my $comment = shift;
    chomp $comment;
        
    use Encode;
    
        read_blacklist();
        
    for my $black (@blacklist_entries) {
                utf8::decode($black);
                utf8::decode($comment);
                #Encode::decode('utf-8',$black);
                #Encode::decode('utf-8',$comment);
        if ( $comment =~ /\b\Q$black\E\b/i ) {
            return "badword_comment $black";
        }
    }
}

binmode(STDOUT, ":utf8"); 

while ( my $line = <> ) {
    my $t = testspam($line);
        print "$line # $t\n" if length $t;
        
}