--- /dev/null
+#!/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 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+# Use bowtie to map sequences in the stream against a specified genome.
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+
+use warnings;
+use strict;
+use Maasha::Biopieces;
+use Maasha::Common;
+use Maasha::Fasta;
+use Maasha::Calc;
+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+
+my ( $options, $in, $out, $index, $tmp_dir, $tmp_in, $tmp_out, $fh_in, $fh_out, $record, $entry, $line, @fields );
+
+$options = Maasha::Biopieces::parse_options(
+ [
+ { long => 'genome', short => 'g', type => 'genome', mandatory => 'yes', default => undef, allowed => undef, disallowed => undef },
+ ]
+);
+
+$in = Maasha::Biopieces::read_stream( $options->{ "stream_in" } );
+$out = Maasha::Biopieces::write_stream( $options->{ "stream_out" } );
+
+$index = "$ENV{ 'BP_DATA' }/genomes/$options->{ 'genome' }/bowtie/$options->{ 'genome' }";
+
+$tmp_dir = Maasha::Biopieces::get_tmpdir();
+$tmp_in = "$tmp_dir/bowtie.seq";
+$tmp_out = "$tmp_dir/bowtie.out";
+
+$fh_out = Maasha::Filesys::file_write_open( $tmp_in );
+
+while ( $record = Maasha::Biopieces::get_record( $in ) )
+{
+ if ( $entry = Maasha::Fasta::biopiece2fasta( $record ) ) {
+ Maasha::Fasta::put_entry( $entry, $fh_out );
+ }
+
+ Maasha::Biopieces::put_record( $record, $out );
+}
+
+close $fh_out;
+
+if ( $options->{ 'verbose' } ) {
+ Maasha::Common::run( "bowtie", "-f $index $tmp_in $tmp_out" );
+} else {
+ Maasha::Common::run( "bowtie", "-f $index $tmp_in $tmp_out > /dev/null 2>&1" );
+}
+
+unlink $tmp_in;
+
+$fh_in = Maasha::Filesys::file_read_open( $tmp_out );
+
+while ( $line = <$fh_in> )
+{
+ chomp $line;
+
+ @fields = split /\t/, $line;
+
+ $record = bowtie2biopiece( \@fields );
+
+ Maasha::Biopieces::put_record( $record, $out );
+}
+
+close $fh_out;
+
+unlink $tmp_out;
+
+Maasha::Biopieces::close_stream( $in );
+Maasha::Biopieces::close_stream( $out );
+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> SUBROUTINES <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+
+sub bowtie2biopiece
+{
+ # Martin A. Hansen, July 2009
+
+ # Convert a bowtie entry to a Biopiece record.
+
+ my ( $entry, # bowtie entry
+ ) = @_;
+
+ # Returns a hash.
+
+ my ( $record, @scores );
+
+ $record->{ 'Q_ID' } = $entry->[ 0 ];
+ $record->{ 'STRAND' } = $entry->[ 1 ];
+ $record->{ 'S_ID' } = $entry->[ 2 ];
+ $record->{ 'S_BEG' } = $entry->[ 3 ];
+ $record->{ 'SEQ' } = $entry->[ 4 ];
+ $record->{ 'SCORES' } = $entry->[ 5 ];
+ $record->{ 'MISMATCH' } = $entry->[ 6 ];
+
+ $record->{ 'SEQ_LEN' } = length $entry->[ 4 ];
+ $record->{ 'S_END' } = $record->{ 'S_BEG' } + $record->{ 'SEQ_LEN' } - 1;
+ $record->{ 'SCORES' } =~ s/(.)/ord( $1 ) - 33 . ";"/ge; # http://maq.sourceforge.net/fastq.shtml
+ $record->{ 'SCORE' } = Maasha::Calc::mean( [ split /;/, $record->{ 'SCORES' } ] );
+
+ $record->{ 'REC_TYPE' } = "BOWTIE";
+
+ return wantarray ? %{ $record } : $record;
+}
+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+
+BEGIN
+{
+ Maasha::Biopieces::status_set();
+}
+
+
+END
+{
+ Maasha::Biopieces::status_log();
+}
+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+
+__END__