freenetis-github/system/libraries/Loader.php @ master
| 8baed187 | Michal Kliment | <?php defined('SYSPATH') or die('No direct script access.');
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/**
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* Loader.
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*
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* $Id: Loader.php 1758 2008-01-21 00:05:34Z PugFish $
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*
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* @package Core
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* @author Kohana Team
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* @copyright (c) 2007-2008 Kohana Team
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* @license http://kohanaphp.com/license.html
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*/
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class Loader {
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/**
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* Autoloads libraries and models specified in config file.
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*/
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public function __construct()
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{
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foreach(array (Config::get('preload')) as $type => $load)
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{
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if ($load == FALSE) continue;
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foreach(explode(',', $load) as $name)
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{
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if (($name = trim($name)) == FALSE) continue;
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switch($type)
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{
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case 'libraries':
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if ($name == 'database')
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{
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$this->database();
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}
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else
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{
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$this->library($name);
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}
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break;
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case 'models':
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$this->model($name);
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break;
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}
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}
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}
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}
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/**
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* Load library.
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*
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* @param string library name
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* @param array custom configuration
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* @param boolean return library instance instead of adding to Kohana instance
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* @return FALSE|Object FALSE if library is already loaded, instance of library if return is TRUE
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*/
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public function library($name, $config = array(), $return = FALSE)
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{
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if (isset(Kohana::instance()->$name) AND $return == FALSE)
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return FALSE;
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if ($name == 'database')
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{
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return $this->database($config, $return);
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}
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else
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{
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$class = ucfirst($name);
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$class = new $class($config);
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if ($return == TRUE)
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return $class;
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Kohana::instance()->$name = $class;
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}
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}
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/**
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* Load database.
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*
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* @param string Database config group to use
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* @param boolean return database instance instead of adding to Kohana instance
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* @return void|Database database instance if return is TRUE
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*/
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public function database($group = 'default', $return = FALSE)
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{
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$db = new Database($group);
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// Return the new database object
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if ($return == TRUE)
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return $db;
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Kohana::instance()->db = $db;
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}
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/**
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* Load helper. Deprecated.
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*
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* @param string helper name
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*/
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public function helper($name)
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{
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// Just don't do this... there's no point.
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Log::add('debug', 'Using $this->load->helper() is deprecated. See Kohana::auto_load().');
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}
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/**
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* Load model.
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*
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* @param string model name
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* @param string custom name for accessing model, or TRUE to return instance of model
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* @return void|FALSE|Object FALSE if model is already loaded, instance of model if alias is TRUE
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*/
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public function model($name, $alias = FALSE)
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{
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// The alias is used for Controller->alias
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$alias = ($alias == FALSE) ? $name : $alias;
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$class = ucfirst($name).'_Model';
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if (isset(Kohana::instance()->$alias))
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return FALSE;
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if (strpos($name, '/') !== FALSE)
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{
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// Handle models in subdirectories
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require_once Kohana::find_file('models', $name);
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// Reset the class name
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$class = end(explode('/', $class));
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}
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// Load the model
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$model = new $class();
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// Return the model
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if ($alias === TRUE)
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return $model;
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Kohana::instance()->$alias = $model;
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}
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/**
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* Load view.
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*
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* @param string view name
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* @param array data to make accessible within view
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* @return View
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*/
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public function view($name, $data = array())
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{
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return new View($name, $data);
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}
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} // End Loader Class
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