# Copyright (c) 2009 bivio Software Inc.  All Rights Reserved.
#
# Visit http://www.bivio.biz for more info.
# 
# This library is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation; either version 2.1 of the
# License, or (at your option) any later version.
# 
# This library 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
# Lesser General Public License for more details.
# 
# You should have received a copy of the GNU Lesser General Public
# License along with this library;  If not, you may get a copy from:
# http://www.opensource.org/licenses/lgpl-license.html
# 
# $Id: Bytes.pm,v 2.1 2009/04/23 17:16:49 moeller Exp $
package Bivio::UI::HTML::Format::Bytes;
use strict;
use Bivio::Base 'Bivio::UI::HTML::Format';

our($VERSION) = sprintf('%d.%02d', q$Revision: 2.1 $ =~ /\d+/g);

sub get_widget_value {
    my($self, $size) = @_;
    return '' unless defined($size) && length($size);
    return '0 KB' if $size == 0;
    $size = _format($size, "%.0f");
    return '1 KB' unless $size;
    # less than 3 digits
    return $size . ' KB'
	if $size < 1000;
    return _format($size, "%.1f") . ' MB';
}

sub _format {
    my($v, $f) = @_;
    $v = sprintf($f, $v / 1024.0);
    $v =~ s/\.0$//;
    return $v;
}

1;