CacheEngine::clean

public function clean($baseDir, $initDir = false, $filename = false)
{
	if (!self::isAvailable())
	{
		return;
	}

	$baseDirVersion = $this->getBaseDirVersion($baseDir);
	$initDirVersion = $this->getInitDirVersion($baseDir, $initDir);

	$dir = sha1($baseDirVersion . '|' . $initDirVersion);
	$initListKey = $this->sid . '|' .$dir . self::BX_DIR_LIST;

	if ($this->fullClean)
	{
		$baseListKey = $this->sid . '|' .$baseDirVersion . self::BX_BASE_LIST;
	}

	if ($filename <> '')
	{
		$key = $this->sid . '|' .$dir . '|' . $filename;
		$this->delFromSet($initListKey . $this->getPartition($filename), $filename);

		if ($this->useLock && $cachedData = $this->get($key))
		{
			$this->set($key . '|old', $this->ttlOld, $cachedData);
		}

		$this->del($key);
		if ($this->useLock)
		{
			$this->unlock($key);
		}
	}
	elseif ($initDir != '')
	{
		$keyPrefix = $this->sid . '|' .$dir . '|';
		$initDirKey = $this->getInitDirKey($baseDir, $initDir);
		$this->del($initDirKey);
		unset(static::$initDirVersion[$initDirKey]);

		$partitionKeys = $this->getSet($initListKey);
		foreach ($partitionKeys as $partition)
		{
			$delKey = $initListKey . $partition;
			$this->deleteBySet($delKey, $keyPrefix);
			$this->del($delKey);
			if ($this->fullClean)
			{
				$this->delFromSet($baseListKey . $this->getPartition($delKey), $delKey);
			}
		}
		$this->del($initListKey);
	}
	else
	{
		$baseDirKey = $this->sid . '|base_dir|' . sha1 ($baseDir);
		$this->del($baseDirKey);
		unset(static::$baseDirVersion[$baseDirKey]);

		if ($this->fullClean)
		{
			$keyPrefix = $this->sid . '|' .$dir . '|';
			$partitionKeys = $this->getSet($baseListKey);

			foreach ($partitionKeys as $partition)
			{
				$baseListKeyPartition = $baseListKey . $partition;
				$keys = $this->getSet($baseListKeyPartition);

				foreach ($keys as $initKey)
				{
					$this->deleteBySet($initKey, $keyPrefix);
					$this->del($initKey);
				}

				$this->del($baseListKeyPartition);
				unset($keys);
			}

			$this->del($baseListKey);

		}
	}

}