-#!/usr/bin/env perl
+#!/usr/bin/env perl -w
+
+# 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 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+# Select a number of random records from the stream.
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
-use warnings;
use strict;
+use Maasha::Biopieces;
+use Maasha::Filesys;
+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+
+my ( $run_time_beg, $run_time_end, $options, $in, $out, $record, $tmp_dir, $tmp_file, $fh_out, $fh_in, $count, $i, %rand_hash, $rand, $max );
+
+$options = Maasha::Biopieces::parse_options(
+ [
+ { long => 'num', short => 'n', type => 'uint', mandatory => 'no', default => 10, allowed => undef, disallowed => 0 },
+ ]
+);
+
+$in = Maasha::Biopieces::read_stream( $options->{ "stream_in" } );
+$out = Maasha::Biopieces::write_stream( $options->{ "stream_out" } );
+
+$tmp_dir = Maasha::Biopieces::get_tmpdir();
+$tmp_file = "$tmp_dir/random_records.tmp";
+
+$fh_out = Maasha::Filesys::file_write_open( $tmp_file );
+
+$count = 0;
+
+while ( $record = Maasha::Biopieces::get_record( $in ) )
+{
+ Maasha::Biopieces::put_record( $record, $fh_out );
+
+ $count++;
+}
+
+close $fh_out;
+
+$max = 0;
+$i = 0;
+
+Maasha::Common::error( qq(Requested random records > records in stream) ) if $options->{ "num" } > $count;
+
+while ( $i < $options->{ "num" } )
+{
+ $rand = int( rand( $count ) );
+
+ if ( not exists $rand_hash{ $rand } )
+ {
+ $rand_hash{ $rand } = 1;
+
+ $max = $rand if $rand > $max;
+
+ $i++;
+ }
+}
+
+$fh_in = Maasha::Filesys::file_read_open( $tmp_file );
+
+$count = 0;
+
+while ( $record = Maasha::Biopieces::get_record( $fh_in ) )
+{
+ Maasha::Biopieces::put_record( $record, $out ) if exists $rand_hash{ $count };
+
+ last if $count == $max;
+
+ $count++;
+}
+
+close $fh_in;
+
+unlink $tmp_file;
+Maasha::Filesys::dir_remove( $tmp_dir );
+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+
+BEGIN
+{
+ $run_time_beg = Maasha::Biopieces::run_time();
+
+ Maasha::Biopieces::log_biopiece();
+}
+
+
+END
+{
+ Maasha::Biopieces::close_stream( $in );
+ Maasha::Biopieces::close_stream( $out );
+
+ $run_time_end = Maasha::Biopieces::run_time();
+
+ Maasha::Biopieces::run_time_print( $run_time_beg, $run_time_end, $options );
+}
+
+
+# >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+
+
+__END__
-use Maasha::BioRun;
elsif ( $script eq "compute" ) { script_compute( $in, $out, $options ) }
elsif ( $script eq "flip_tab" ) { script_flip_tab( $in, $out, $options ) }
elsif ( $script eq "count_records" ) { script_count_records( $in, $out, $options ) }
- elsif ( $script eq "random_records" ) { script_random_records( $in, $out, $options ) }
elsif ( $script eq "sort_records" ) { script_sort_records( $in, $out, $options ) }
elsif ( $script eq "count_vals" ) { script_count_vals( $in, $out, $options ) }
elsif ( $script eq "plot_histogram" ) { script_plot_histogram( $in, $out, $options ) }
data_out|o=s
);
}
- elsif ( $script eq "random_records" )
- {
- @options = qw(
- num|n=s
- );
- }
elsif ( $script eq "sort_records" )
{
@options = qw(
}
-sub script_random_records
-{
- # Martin A. Hansen, August 2007.
-
- # Pick a number or random records from stream.
-
- my ( $in, # handle to in stream
- $out, # handle to out stream
- $options, # options hash
- ) = @_;
-
- # Returns nothing.
-
- my ( $record, $tmp_file, $fh_out, $fh_in, $count, $i, %rand_hash, $rand, $max );
-
- $options->{ "num" } ||= 10;
-
- $tmp_file = "$BP_TMP/random_records.tmp";
-
- $fh_out = Maasha::Common::write_open( $tmp_file );
-
- $count = 0;
-
- while ( $record = Maasha::Biopieces::get_record( $in ) )
- {
- Maasha::Biopieces::put_record( $record, $fh_out );
-
- $count++;
- }
-
- close $fh_out;
-
- $max = 0;
- $i = 0;
-
- Maasha::Common::error( qq(Requested random records > records in stream) ) if $options->{ "num" } > $count;
-
- while ( $i < $options->{ "num" } )
- {
- $rand = int( rand( $count ) );
-
- if ( not exists $rand_hash{ $rand } )
- {
- $rand_hash{ $rand } = 1;
-
- $max = $rand if $rand > $max;
-
- $i++;
- }
- }
-
- $fh_in = Maasha::Common::read_open( $tmp_file );
-
- $count = 0;
-
- while ( $record = Maasha::Biopieces::get_record( $fh_in ) )
- {
- Maasha::Biopieces::put_record( $record, $out ) if exists $rand_hash{ $count };
-
- last if $count == $max;
-
- $count++;
- }
-
- close $fh_in;
-
- unlink $tmp_file;
-}
-
-
sub script_sort_records
{
# Martin A. Hansen, August 2007.