+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+
+my ( $options, $in, $out, $record, $eval_key, @keys, $eval_val );
+
+$options = Maasha::Biopieces::parse_options(
+ [
+ { long => 'eval', short => 'e', type => 'string', mandatory => 'yes', default => undef, allowed => undef, disallowed => undef },
+ { long => 'format', short => 'f', type => 'string', 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 ( $options->{ "eval" } =~ /^(\S+)\s*=\s*(.+)$/ )
+ {
+ $eval_key = $1;
+ $eval_val = $2;
+
+ if ( not @keys )
+ {
+ @keys = split /\s+|\+|-|\*|\/|\*\*/, $eval_val;
+
+ @keys = grep { exists $record->{ $_ } } @keys;
+ }
+
+ map { $eval_val =~ s/\Q$_\E/$record->{ $_ }/g } @keys;
+
+ if ( $eval_val =~ /\+|\-|\*|\// or $eval_val =~ /\s+x\s+/)
+ {
+ $record->{ $eval_key } = eval "$eval_val";
+ Maasha::Common::error( qq(eval "$eval_key = $eval_val" failed -> $@) ) if $@;
+ $record->{ $eval_key } = sprintf( $options->{ 'format' }, $record->{ $eval_key } ) if $options->{ 'format' };
+ }
+ else
+ {
+ $record->{ $eval_key } = $eval_val;
+ }
+ }
+ else
+ {
+ Maasha::Common::error( qq(Bad compute expression: "$options->{ 'eval' }"\n) );
+ }
+
+ 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();
+}
+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+
+__END__