+use Maasha::Biopieces;
+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+
+my ( $options, $in, $out, %hash, $record );
+
+$options = Maasha::Biopieces::parse_options(
+ [
+ { long => 'key', short => 'k', type => 'string', mandatory => 'yes', default => undef, allowed => undef, disallowed => undef },
+ { long => 'invert', short => 'i', type => 'flag', mandatory => 'no', default => undef, allowed => undef, disallowed => undef },
+ ]
+);
+
+$in = Maasha::Biopieces::read_stream( $options->{ "stream_in" } );
+$out = Maasha::Biopieces::write_stream( $options->{ "stream_out" } );
+
+while ( $record = Maasha::Biopieces::get_record( $in ) )
+{
+ if ( exists $record->{ $options->{ "key" } } )
+ {
+ if ( not $hash{ $record->{ $options->{ "key" } } } and not $options->{ "invert" } )
+ {
+ Maasha::Biopieces::put_record( $record, $out );
+
+ $hash{ $record->{ $options->{ "key" } } } = 1;
+ }
+ elsif ( $hash{ $record->{ $options->{ "key" } } } and $options->{ "invert" } )
+ {
+ Maasha::Biopieces::put_record( $record, $out );
+ }
+ else
+ {
+ $hash{ $record->{ $options->{ "key" } } } = 1;
+ }
+ }
+ else
+ {
+ Maasha::Biopieces::put_record( $record, $out );
+ }
+}
+
+Maasha::Biopieces::close_stream( $in );
+Maasha::Biopieces::close_stream( $out );
+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+
+BEGIN
+{
+ Maasha::Biopieces::status_set();
+}
+
+
+END
+{
+ Maasha::Biopieces::status_log();
+}
+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+