my @dk = (  {data => [
                    {
                        text => 'data',
                        data => {
                            spriteCssClass => 'folder',
                            'fullPath' => '/data'
                        },
                        contents => [
                                  {
                                    text => 'raw',
                                    data => {
                                        spriteCssClass => 'folder',
                                        fullPath => '/data/raw'
                                    },
                                    contents => [
                                        {
                                            text => 'file1.csv',
                                            data => {
                                                spriteCssClass => 'csv',
                                                fullPath => '/data/raw/file1.csv',
                                                size => '12345'
                                            }
                                        },
                                        {
                                            text => 'file2.csv',
                                            data => {
                                                spriteCssClass => 'csv',
                                                fullPath => '/data/raw/file2.csv',
                                                size => '123'
                                            }
                                        }
                                        
                                    ]
                                  },
                                  {
                                    text => 'rdf',
                                    data => {
                                        spriteCssClass => 'folder',
                                        fullPath => '/data/rdf'
                                    },
                                    contents => [
                                        {
                                            text => 'file1.rdf',
                                            data => {
                                                spriteCssClass => 'rdf',
                                                fullPath => '/data/raw/file1.rdf',
                                                size => '123456'
                                            }
                                        },
                                        {
                                            text => 'file2.csv',
                                            data => {
                                                spriteCssClass => 'rdf',
                                                fullPath => '/data/raw/file2.rdf',
                                                size => '1235'
                                            }
                                        }
                                    ]
                                  }
                                  ],
                     }
                    ]
            });

##</code><code>##

sub _directoryTree {
    my ($directory,$filter) = @_;
    my (@files,@dirs);
    
    find(sub{
        push @files, $File::Find::name;
    },$directory);
    foreach my $file(@files) {
        chomp $file;
        my $ref = \@dirs;
        my $truncated = $file;
        $truncated =~ s/^$filter//;
        
        foreach my $dir ( split /\//,$truncated ) {
            my $i = 0;
            next if $dir eq '';
            $i++ while ( $ref->[$i] and $ref->[$i]{name} ne $dir );
            my $r;
            if (-f $file) {
                my ($ext,$spriteclass);
                if ($file =~ /\.(\w+)$/) {
                    $ext = $1;
                    if ($ext eq 'html') {
                        $spriteclass = 'html';
                    }
                    elsif($ext =~ m/png|jpg|jpeg|gif|ico/) {
                        $spriteclass = 'image';
                    }
                    elsif($ext eq 'pdf') {
                        $spriteclass = 'pdf';
                    }
                    else {
                        $spriteclass = 'html';
                    }
                }
                
                $r= $ref->[$i] ||= {'text' => $dir,
                                    'data' => {
                                        'spriteCssClass' => $spriteclass,
                                        'fullPath' => $file,
                                        'id'       => $dir,
                                        'size'     => (-s $file),
                                        'type'     => $ext
                                    }
                                    
                                   } unless $dir =~ m/^\./; #, 'accessed' => ctime(stat($file)->atime)
            }
            else {
                $r= $ref->[$i] ||= {'text' => $dir,
                                    'files' => [],
                                    'data' => {
                                        'spriteCssClass' => 'folder',
                                        'fullPath' => $file,
                                        'id'       => $dir,
                                        'size'     => 0,
                                        'type'     => 'folder'
                                    }
                                    
                                   };
            }
            $ref  = $r->{'files'};
        }
    }
    return \@dirs;
}