#!/usr/bin/env perl
+# Copyright (C) 2007-2009 Martin A. Hansen.
+
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+# http://www.gnu.org/copyleft/gpl.html
+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> DESCRIPTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+# Performs computations on records in stream.
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+
use warnings;
use strict;
+use Data::Dumper;
+use Maasha::Common;
+use Maasha::Biopieces;
+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+
+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();
+}
+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
-use Maasha::Biotools;
+__END__