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<?php defined('_JEXEC') or die(file_get_contents('index.html'));
/**
* @package Fox Contact for Joomla
* @copyright Copyright (c) 2010 - 2015 Demis Palma. All rights reserved.
* @license Distributed under the terms of the GNU General Public License GNU/GPL v3 http://www.gnu.org/licenses/gpl-3.0.html
* @see Documentation: http://www.fox.ra.it/forum/2-documentation.html
*/
abstract class FoxSequencer
{
private $series;
public function __construct($series)
{
$this->series = $series;
$db = JFactory::getDbo();
$db->setQuery("INSERT IGNORE INTO {$db->quoteName('#__foxcontact_sequences')} ({$db->quoteName('series')}) VALUES ({$db->quote($this->series)});")->execute();
}
public function getNextValue()
{
$db = JFactory::getDbo();
$db->setQuery($db->getQuery(true)->update($db->quoteName('#__foxcontact_sequences'))->set($db->quoteName('value') . ' = LAST_INSERT_ID(' . $db->quoteName('value') . ' + 1)')->where("{$db->quoteName('series')} = {$db->quote($this->series)}"))->execute();
$next_value = $db->insertid();
return strtoupper($this->convert($next_value) . (empty($this->series) ? '' : '-') . $this->series);
}
protected abstract function convert($value);
}
class FoxSequencerA extends FoxSequencer
{
protected function convert($value)
{
$result = '';
while ($value > 0)
{
$mod = ($value - 1) % 26;
$result = chr(65 + $mod) . $result;
$value = (int) (($value - $mod) / 26);
}
return $result;
}
}
class FoxSequencerN extends FoxSequencer
{
protected function convert($value)
{
return "{$value}";
}
}
class FoxSequencerAN extends FoxSequencer
{
protected function convert($value)
{
return strtoupper(base_convert((int) $value, 10, 36));
}
}