<?php
/**
* CodeIgniter
*
* An open source application development framework for PHP
*
* This content is released under the MIT License (MIT)
*
* Copyright (c) 2014 - 2015, British Columbia Institute of Technology
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @package CodeIgniter
* @author EllisLab Dev Team
* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
* @copyright Copyright (c) 2014 - 2015, British Columbia Institute of Technology (http://bcit.ca/)
* @license http://opensource.org/licenses/MIT MIT License
* @link http://codeigniter.com
* @since Version 1.0.0
* @filesource
*/
defined('BASEPATH') OR exit('No direct script access allowed');

/**
* CodeIgniter Number Helpers
*
* @package CodeIgniter
* @subpackage Helpers
* @category Helpers
* @author EllisLab Dev Team
* @link http://codeigniter.com/user_guide/helpers/number_helper.html
*/

// ------------------------------------------------------------------------

if ( ! function_exists('byte_format'))
{
/**
* Formats a numbers as bytes, based on size, and adds the appropriate suffix
*
* @param mixed will be cast as int
* @param int
* @return string
*/
function byte_format($num, $precision = 1)
{
$CI =& get_instance();
$CI->lang->load('number');

if ($num >= 1000000000000)
{
$num = round($num / 1099511627776, $precision);
$unit = $CI->lang->line('terabyte_abbr');
}
elseif ($num >= 1000000000)
{
$num = round($num / 1073741824, $precision);
$unit = $CI->lang->line('gigabyte_abbr');
}
elseif ($num >= 1000000)
{
$num = round($num / 1048576, $precision);
$unit = $CI->lang->line('megabyte_abbr');
}
elseif ($num >= 1000)
{
$num = round($num / 1024, $precision);
$unit = $CI->lang->line('kilobyte_abbr');
}
else
{
$unit = $CI->lang->line('bytes');
return number_format($num).' '.$unit;
}

return number_format($num, $precision).' '.$unit;
}
}