An utility for my plugin system

plugin_utility.php

class plugin_utility
{
	private $CI;
	private $name;
	public function __construct($name) {
		 $this->CI =& get_instance();
		 $this->name=$name;
		 if($this->checklang())
		 {
		 	$this->CI->lang->plg_load($name,$name);			 
		 }
	 
    }	
	public function install_db($options)
	{
		$this->CI->load->dbforge();
		
		if(is_array($options['tables']) && count($options['tables']>0))
		{
			
			foreach($options['tables'] as $key=>$table)
			{
				$this->CI->dbforge->add_field($table['fields']);
				if(is_array($table['keys']))
				{
					foreach($table['keys'] as $k)
					{
						$this->CI->dbforge->add_key($k, TRUE);
					}
				}else{
					$this->CI->dbforge->add_key($table['keys'], TRUE);
				}
				
				if($this->CI->dbforge->create_table($key, TRUE))
				{
					insert_plugin_headers($this->name);
					//enable_plugin($this->name);
					$result = array("result" => "ok", "result_message" => "<ul><li>".$this->CI->lang->line('success_plugin_installation')."</li></ul>");
				}else{
					$result = array("result" => "null", "result_message" => "<ul><li>".$this->CI->lang->line('failure_plugin_installation')."</li></ul>");
				}
				
				return $result;
			}
			
		}
	}	
	public function uninstall_db($options)
	{
		$this->CI->load->dbforge();
		
		if(is_array($options['tables']) && count($options['tables']>0))
		{
			
			foreach($options['tables'] as $table)
			{		
				if($this->dbforge->drop_table($table,TRUE))
				{
					$result = array("result" => "ok", "result_message" => "<ul><li>".$this->CI->lang->line('success_plugin_uninstallation')."</li></ul>");
				}else{
					$result = array("result" => "null", "result_message" => "<ul><li>".$this->CI->lang->line('failure_plugin_uninstallation')."</li></ul>");
				}
				
				return $result;
			}
			
		}
	}		
	public function copy_controllers()
	{
		$path=PLUGINPATH.$this->name.'/core/controllers';
		$dest_path=FCPATH.'store/controllers';
		if(is_dir($path) && is_dir($dest_path))
		{		
			copy_r($path,$dest_path);
		}			
	}
	public function delete_controllers()
	{
		$this->CI->load->helper('directory');
		$this->CI->load->helper('directory');
		$path=PLUGINPATH.$this->name.'/core/controllers';
		$dest_path=FCPATH.'store/controllers';
		if(is_dir($path) && is_dir($dest_path))
		{		
			$map = directory_map($path);
			foreach($map as $folder=>$file)
			{
				if(is_array($file))
				{
					foreach($file as $k=>$v)
					{
						if(file_exists($dest_path.DIRECTORY_SEPARATOR.$folder.$v))
							@unlink($dest_path.DIRECTORY_SEPARATOR.$folder.$v);
					}
					
				}else{
						if(file_exists($dest_path.DIRECTORY_SEPARATOR.$file))
							@unlink($dest_path.DIRECTORY_SEPARATOR.$file);
				}
			}
		}			
	}	

	private function checklang()
	{
		$path=PLUGINPATH.$this->name.'/core/language';
		if(is_dir($path))
		{
			return true;
		}
		return false;
	}	

}