1248 lines
30 KiB
PHP
1248 lines
30 KiB
PHP
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
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/**
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* CodeIgniter
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*
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* An open source application development framework for PHP 5.1.6 or newer
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*
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* @package CodeIgniter
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* @author ExpressionEngine Dev Team
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* @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
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* @license http://codeigniter.com/user_guide/license.html
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* @link http://codeigniter.com
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* @since Version 1.0
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* @filesource
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*/
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// ------------------------------------------------------------------------
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/**
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* Loader Class
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*
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* Loads views and files
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*
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* @package CodeIgniter
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* @subpackage Libraries
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* @author ExpressionEngine Dev Team
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* @category Loader
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* @link http://codeigniter.com/user_guide/libraries/loader.html
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*/
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class CI_Loader {
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// All these are set automatically. Don't mess with them.
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/**
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* Nesting level of the output buffering mechanism
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*
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* @var int
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* @access protected
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*/
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protected $_ci_ob_level;
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/**
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* List of paths to load views from
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*
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* @var array
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* @access protected
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*/
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protected $_ci_view_paths = array();
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/**
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* List of paths to load libraries from
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*
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* @var array
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* @access protected
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*/
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protected $_ci_library_paths = array();
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/**
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* List of paths to load models from
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*
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* @var array
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* @access protected
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*/
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protected $_ci_model_paths = array();
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/**
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* List of paths to load helpers from
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*
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* @var array
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* @access protected
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*/
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protected $_ci_helper_paths = array();
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/**
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* List of loaded base classes
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* Set by the controller class
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*
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* @var array
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* @access protected
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*/
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protected $_base_classes = array(); // Set by the controller class
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/**
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* List of cached variables
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*
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* @var array
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* @access protected
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*/
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protected $_ci_cached_vars = array();
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/**
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* List of loaded classes
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*
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* @var array
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* @access protected
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*/
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protected $_ci_classes = array();
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/**
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* List of loaded files
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*
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* @var array
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* @access protected
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*/
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protected $_ci_loaded_files = array();
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/**
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* List of loaded models
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*
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* @var array
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* @access protected
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*/
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protected $_ci_models = array();
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/**
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* List of loaded helpers
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*
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* @var array
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* @access protected
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*/
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protected $_ci_helpers = array();
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/**
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* List of class name mappings
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*
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* @var array
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* @access protected
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*/
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protected $_ci_varmap = array('unit_test' => 'unit',
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'user_agent' => 'agent');
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/**
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* Constructor
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*
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* Sets the path to the view files and gets the initial output buffering level
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*/
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public function __construct()
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{
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$this->_ci_ob_level = ob_get_level();
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$this->_ci_library_paths = array(APPPATH, BASEPATH);
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$this->_ci_helper_paths = array(APPPATH, BASEPATH);
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$this->_ci_model_paths = array(APPPATH);
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$this->_ci_view_paths = array(APPPATH.'views/' => TRUE);
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log_message('debug', "Loader Class Initialized");
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}
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// --------------------------------------------------------------------
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/**
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* Initialize the Loader
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*
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* This method is called once in CI_Controller.
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*
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* @param array
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* @return object
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*/
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public function initialize()
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{
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$this->_ci_classes = array();
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$this->_ci_loaded_files = array();
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$this->_ci_models = array();
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$this->_base_classes =& is_loaded();
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$this->_ci_autoloader();
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return $this;
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}
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// --------------------------------------------------------------------
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/**
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* Is Loaded
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*
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* A utility function to test if a class is in the self::$_ci_classes array.
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* This function returns the object name if the class tested for is loaded,
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* and returns FALSE if it isn't.
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*
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* It is mainly used in the form_helper -> _get_validation_object()
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*
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* @param string class being checked for
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* @return mixed class object name on the CI SuperObject or FALSE
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*/
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public function is_loaded($class)
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{
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if (isset($this->_ci_classes[$class]))
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{
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return $this->_ci_classes[$class];
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}
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return FALSE;
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}
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// --------------------------------------------------------------------
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/**
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* Class Loader
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*
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* This function lets users load and instantiate classes.
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* It is designed to be called from a user's app controllers.
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*
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* @param string the name of the class
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* @param mixed the optional parameters
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* @param string an optional object name
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* @return void
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*/
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public function library($library = '', $params = NULL, $object_name = NULL)
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{
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if (is_array($library))
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{
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foreach ($library as $class)
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{
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$this->library($class, $params);
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}
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return;
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}
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if ($library == '' OR isset($this->_base_classes[$library]))
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{
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return FALSE;
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}
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if ( ! is_null($params) && ! is_array($params))
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{
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$params = NULL;
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}
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$this->_ci_load_class($library, $params, $object_name);
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}
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// --------------------------------------------------------------------
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/**
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* Model Loader
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*
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* This function lets users load and instantiate models.
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*
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* @param string the name of the class
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* @param string name for the model
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* @param bool database connection
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* @return void
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*/
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public function model($model, $name = '', $db_conn = FALSE)
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{
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if (is_array($model))
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{
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foreach ($model as $babe)
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{
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$this->model($babe);
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}
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return;
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}
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if ($model == '')
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{
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return;
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}
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$path = '';
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// Is the model in a sub-folder? If so, parse out the filename and path.
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if (($last_slash = strrpos($model, '/')) !== FALSE)
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{
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// The path is in front of the last slash
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$path = substr($model, 0, $last_slash + 1);
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// And the model name behind it
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$model = substr($model, $last_slash + 1);
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}
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if ($name == '')
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{
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$name = $model;
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}
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if (in_array($name, $this->_ci_models, TRUE))
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{
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return;
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}
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$CI =& get_instance();
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if (isset($CI->$name))
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{
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show_error('The model name you are loading is the name of a resource that is already being used: '.$name);
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}
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$model = strtolower($model);
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foreach ($this->_ci_model_paths as $mod_path)
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{
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if ( ! file_exists($mod_path.'models/'.$path.$model.'.php'))
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{
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continue;
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}
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if ($db_conn !== FALSE AND ! class_exists('CI_DB'))
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{
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if ($db_conn === TRUE)
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{
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$db_conn = '';
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}
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$CI->load->database($db_conn, FALSE, TRUE);
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}
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if ( ! class_exists('CI_Model'))
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{
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load_class('Model', 'core');
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}
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require_once($mod_path.'models/'.$path.$model.'.php');
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$model = ucfirst($model);
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$CI->$name = new $model();
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$this->_ci_models[] = $name;
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return;
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}
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// couldn't find the model
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show_error('Unable to locate the model you have specified: '.$model);
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}
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// --------------------------------------------------------------------
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/**
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* Database Loader
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*
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* @param string the DB credentials
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* @param bool whether to return the DB object
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* @param bool whether to enable active record (this allows us to override the config setting)
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* @return object
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*/
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public function database($params = '', $return = FALSE, $active_record = NULL)
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{
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// Grab the super object
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$CI =& get_instance();
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// Do we even need to load the database class?
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if (class_exists('CI_DB') AND $return == FALSE AND $active_record == NULL AND isset($CI->db) AND is_object($CI->db))
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{
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return FALSE;
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}
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require_once(BASEPATH.'database/DB.php');
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if ($return === TRUE)
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{
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return DB($params, $active_record);
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}
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// Initialize the db variable. Needed to prevent
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// reference errors with some configurations
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$CI->db = '';
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// Load the DB class
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$CI->db =& DB($params, $active_record);
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}
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// --------------------------------------------------------------------
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/**
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* Load the Utilities Class
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*
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* @return string
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*/
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public function dbutil()
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{
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if ( ! class_exists('CI_DB'))
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{
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$this->database();
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}
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$CI =& get_instance();
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// for backwards compatibility, load dbforge so we can extend dbutils off it
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// this use is deprecated and strongly discouraged
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$CI->load->dbforge();
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require_once(BASEPATH.'database/DB_utility.php');
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require_once(BASEPATH.'database/drivers/'.$CI->db->dbdriver.'/'.$CI->db->dbdriver.'_utility.php');
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$class = 'CI_DB_'.$CI->db->dbdriver.'_utility';
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$CI->dbutil = new $class();
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}
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// --------------------------------------------------------------------
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/**
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* Load the Database Forge Class
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*
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* @return string
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*/
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public function dbforge()
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{
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if ( ! class_exists('CI_DB'))
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{
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$this->database();
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}
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$CI =& get_instance();
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require_once(BASEPATH.'database/DB_forge.php');
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require_once(BASEPATH.'database/drivers/'.$CI->db->dbdriver.'/'.$CI->db->dbdriver.'_forge.php');
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$class = 'CI_DB_'.$CI->db->dbdriver.'_forge';
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$CI->dbforge = new $class();
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}
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// --------------------------------------------------------------------
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/**
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* Load View
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*
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* This function is used to load a "view" file. It has three parameters:
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*
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* 1. The name of the "view" file to be included.
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* 2. An associative array of data to be extracted for use in the view.
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* 3. TRUE/FALSE - whether to return the data or load it. In
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* some cases it's advantageous to be able to return data so that
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* a developer can process it in some way.
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*
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* @param string
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* @param array
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* @param bool
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* @return void
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*/
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public function view($view, $vars = array(), $return = FALSE)
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{
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return $this->_ci_load(array('_ci_view' => $view, '_ci_vars' => $this->_ci_object_to_array($vars), '_ci_return' => $return));
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}
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// --------------------------------------------------------------------
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/**
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* Load File
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*
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* This is a generic file loader
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*
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* @param string
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* @param bool
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* @return string
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*/
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public function file($path, $return = FALSE)
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{
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return $this->_ci_load(array('_ci_path' => $path, '_ci_return' => $return));
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}
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// --------------------------------------------------------------------
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/**
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* Set Variables
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*
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* Once variables are set they become available within
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* the controller class and its "view" files.
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*
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* @param array
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* @param string
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* @return void
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*/
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public function vars($vars = array(), $val = '')
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{
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if ($val != '' AND is_string($vars))
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{
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$vars = array($vars => $val);
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}
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$vars = $this->_ci_object_to_array($vars);
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if (is_array($vars) AND count($vars) > 0)
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{
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foreach ($vars as $key => $val)
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{
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$this->_ci_cached_vars[$key] = $val;
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}
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}
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}
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// --------------------------------------------------------------------
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/**
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* Get Variable
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*
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* Check if a variable is set and retrieve it.
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*
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* @param array
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* @return void
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*/
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public function get_var($key)
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{
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return isset($this->_ci_cached_vars[$key]) ? $this->_ci_cached_vars[$key] : NULL;
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}
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// --------------------------------------------------------------------
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/**
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* Load Helper
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*
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* This function loads the specified helper file.
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*
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* @param mixed
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* @return void
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*/
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public function helper($helpers = array())
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{
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foreach ($this->_ci_prep_filename($helpers, '_helper') as $helper)
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{
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if (isset($this->_ci_helpers[$helper]))
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{
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continue;
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}
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$ext_helper = APPPATH.'helpers/'.config_item('subclass_prefix').$helper.'.php';
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// Is this a helper extension request?
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if (file_exists($ext_helper))
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{
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$base_helper = BASEPATH.'helpers/'.$helper.'.php';
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if ( ! file_exists($base_helper))
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{
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show_error('Unable to load the requested file: helpers/'.$helper.'.php');
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}
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include_once($ext_helper);
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include_once($base_helper);
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$this->_ci_helpers[$helper] = TRUE;
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log_message('debug', 'Helper loaded: '.$helper);
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continue;
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}
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// Try to load the helper
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foreach ($this->_ci_helper_paths as $path)
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{
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if (file_exists($path.'helpers/'.$helper.'.php'))
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{
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include_once($path.'helpers/'.$helper.'.php');
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$this->_ci_helpers[$helper] = TRUE;
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log_message('debug', 'Helper loaded: '.$helper);
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break;
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}
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}
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// unable to load the helper
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if ( ! isset($this->_ci_helpers[$helper]))
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{
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show_error('Unable to load the requested file: helpers/'.$helper.'.php');
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}
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}
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}
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// --------------------------------------------------------------------
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/**
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* Load Helpers
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*
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* This is simply an alias to the above function in case the
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* user has written the plural form of this function.
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*
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* @param array
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* @return void
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*/
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public function helpers($helpers = array())
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{
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$this->helper($helpers);
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}
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// --------------------------------------------------------------------
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/**
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* Loads a language file
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*
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* @param array
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* @param string
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* @return void
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*/
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public function language($file = array(), $lang = '')
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{
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$CI =& get_instance();
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if ( ! is_array($file))
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{
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$file = array($file);
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}
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foreach ($file as $langfile)
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{
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$CI->lang->load($langfile, $lang);
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}
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}
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// --------------------------------------------------------------------
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/**
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* Loads a config file
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*
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* @param string
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* @param bool
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* @param bool
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* @return void
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*/
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public function config($file = '', $use_sections = FALSE, $fail_gracefully = FALSE)
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{
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$CI =& get_instance();
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$CI->config->load($file, $use_sections, $fail_gracefully);
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}
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// --------------------------------------------------------------------
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/**
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* Driver
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*
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* Loads a driver library
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*
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* @param string the name of the class
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* @param mixed the optional parameters
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* @param string an optional object name
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* @return void
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*/
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public function driver($library = '', $params = NULL, $object_name = NULL)
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{
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if ( ! class_exists('CI_Driver_Library'))
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{
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// we aren't instantiating an object here, that'll be done by the Library itself
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require BASEPATH.'libraries/Driver.php';
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}
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if ($library == '')
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{
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return FALSE;
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}
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|
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// We can save the loader some time since Drivers will *always* be in a subfolder,
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// and typically identically named to the library
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|
if ( ! strpos($library, '/'))
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{
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$library = ucfirst($library).'/'.$library;
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}
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return $this->library($library, $params, $object_name);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Add Package Path
|
|
*
|
|
* Prepends a parent path to the library, model, helper, and config path arrays
|
|
*
|
|
* @param string
|
|
* @param boolean
|
|
* @return void
|
|
*/
|
|
public function add_package_path($path, $view_cascade=TRUE)
|
|
{
|
|
$path = rtrim($path, '/').'/';
|
|
|
|
array_unshift($this->_ci_library_paths, $path);
|
|
array_unshift($this->_ci_model_paths, $path);
|
|
array_unshift($this->_ci_helper_paths, $path);
|
|
|
|
$this->_ci_view_paths = array($path.'views/' => $view_cascade) + $this->_ci_view_paths;
|
|
|
|
// Add config file path
|
|
$config =& $this->_ci_get_component('config');
|
|
array_unshift($config->_config_paths, $path);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get Package Paths
|
|
*
|
|
* Return a list of all package paths, by default it will ignore BASEPATH.
|
|
*
|
|
* @param string
|
|
* @return void
|
|
*/
|
|
public function get_package_paths($include_base = FALSE)
|
|
{
|
|
return $include_base === TRUE ? $this->_ci_library_paths : $this->_ci_model_paths;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Remove Package Path
|
|
*
|
|
* Remove a path from the library, model, and helper path arrays if it exists
|
|
* If no path is provided, the most recently added path is removed.
|
|
*
|
|
* @param type
|
|
* @param bool
|
|
* @return type
|
|
*/
|
|
public function remove_package_path($path = '', $remove_config_path = TRUE)
|
|
{
|
|
$config =& $this->_ci_get_component('config');
|
|
|
|
if ($path == '')
|
|
{
|
|
$void = array_shift($this->_ci_library_paths);
|
|
$void = array_shift($this->_ci_model_paths);
|
|
$void = array_shift($this->_ci_helper_paths);
|
|
$void = array_shift($this->_ci_view_paths);
|
|
$void = array_shift($config->_config_paths);
|
|
}
|
|
else
|
|
{
|
|
$path = rtrim($path, '/').'/';
|
|
foreach (array('_ci_library_paths', '_ci_model_paths', '_ci_helper_paths') as $var)
|
|
{
|
|
if (($key = array_search($path, $this->{$var})) !== FALSE)
|
|
{
|
|
unset($this->{$var}[$key]);
|
|
}
|
|
}
|
|
|
|
if (isset($this->_ci_view_paths[$path.'views/']))
|
|
{
|
|
unset($this->_ci_view_paths[$path.'views/']);
|
|
}
|
|
|
|
if (($key = array_search($path, $config->_config_paths)) !== FALSE)
|
|
{
|
|
unset($config->_config_paths[$key]);
|
|
}
|
|
}
|
|
|
|
// make sure the application default paths are still in the array
|
|
$this->_ci_library_paths = array_unique(array_merge($this->_ci_library_paths, array(APPPATH, BASEPATH)));
|
|
$this->_ci_helper_paths = array_unique(array_merge($this->_ci_helper_paths, array(APPPATH, BASEPATH)));
|
|
$this->_ci_model_paths = array_unique(array_merge($this->_ci_model_paths, array(APPPATH)));
|
|
$this->_ci_view_paths = array_merge($this->_ci_view_paths, array(APPPATH.'views/' => TRUE));
|
|
$config->_config_paths = array_unique(array_merge($config->_config_paths, array(APPPATH)));
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Loader
|
|
*
|
|
* This function is used to load views and files.
|
|
* Variables are prefixed with _ci_ to avoid symbol collision with
|
|
* variables made available to view files
|
|
*
|
|
* @param array
|
|
* @return void
|
|
*/
|
|
protected function _ci_load($_ci_data)
|
|
{
|
|
// Set the default data variables
|
|
foreach (array('_ci_view', '_ci_vars', '_ci_path', '_ci_return') as $_ci_val)
|
|
{
|
|
$$_ci_val = ( ! isset($_ci_data[$_ci_val])) ? FALSE : $_ci_data[$_ci_val];
|
|
}
|
|
|
|
$file_exists = FALSE;
|
|
|
|
// Set the path to the requested file
|
|
if ($_ci_path != '')
|
|
{
|
|
$_ci_x = explode('/', $_ci_path);
|
|
$_ci_file = end($_ci_x);
|
|
}
|
|
else
|
|
{
|
|
$_ci_ext = pathinfo($_ci_view, PATHINFO_EXTENSION);
|
|
$_ci_file = ($_ci_ext == '') ? $_ci_view.'.php' : $_ci_view;
|
|
|
|
foreach ($this->_ci_view_paths as $view_file => $cascade)
|
|
{
|
|
if (file_exists($view_file.$_ci_file))
|
|
{
|
|
$_ci_path = $view_file.$_ci_file;
|
|
$file_exists = TRUE;
|
|
break;
|
|
}
|
|
|
|
if ( ! $cascade)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( ! $file_exists && ! file_exists($_ci_path))
|
|
{
|
|
show_error('Unable to load the requested file: '.$_ci_file);
|
|
}
|
|
|
|
// This allows anything loaded using $this->load (views, files, etc.)
|
|
// to become accessible from within the Controller and Model functions.
|
|
|
|
$_ci_CI =& get_instance();
|
|
foreach (get_object_vars($_ci_CI) as $_ci_key => $_ci_var)
|
|
{
|
|
if ( ! isset($this->$_ci_key))
|
|
{
|
|
$this->$_ci_key =& $_ci_CI->$_ci_key;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Extract and cache variables
|
|
*
|
|
* You can either set variables using the dedicated $this->load_vars()
|
|
* function or via the second parameter of this function. We'll merge
|
|
* the two types and cache them so that views that are embedded within
|
|
* other views can have access to these variables.
|
|
*/
|
|
if (is_array($_ci_vars))
|
|
{
|
|
$this->_ci_cached_vars = array_merge($this->_ci_cached_vars, $_ci_vars);
|
|
}
|
|
extract($this->_ci_cached_vars);
|
|
|
|
/*
|
|
* Buffer the output
|
|
*
|
|
* We buffer the output for two reasons:
|
|
* 1. Speed. You get a significant speed boost.
|
|
* 2. So that the final rendered template can be
|
|
* post-processed by the output class. Why do we
|
|
* need post processing? For one thing, in order to
|
|
* show the elapsed page load time. Unless we
|
|
* can intercept the content right before it's sent to
|
|
* the browser and then stop the timer it won't be accurate.
|
|
*/
|
|
ob_start();
|
|
|
|
// If the PHP installation does not support short tags we'll
|
|
// do a little string replacement, changing the short tags
|
|
// to standard PHP echo statements.
|
|
|
|
if ((bool) @ini_get('short_open_tag') === FALSE AND config_item('rewrite_short_tags') == TRUE)
|
|
{
|
|
echo eval('?>'.preg_replace("/;*\s*\?>/", "; ?>", str_replace('<?=', '<?php echo ', file_get_contents($_ci_path))));
|
|
}
|
|
else
|
|
{
|
|
include($_ci_path); // include() vs include_once() allows for multiple views with the same name
|
|
}
|
|
|
|
log_message('debug', 'File loaded: '.$_ci_path);
|
|
|
|
// Return the file data if requested
|
|
if ($_ci_return === TRUE)
|
|
{
|
|
$buffer = ob_get_contents();
|
|
@ob_end_clean();
|
|
return $buffer;
|
|
}
|
|
|
|
/*
|
|
* Flush the buffer... or buff the flusher?
|
|
*
|
|
* In order to permit views to be nested within
|
|
* other views, we need to flush the content back out whenever
|
|
* we are beyond the first level of output buffering so that
|
|
* it can be seen and included properly by the first included
|
|
* template and any subsequent ones. Oy!
|
|
*
|
|
*/
|
|
if (ob_get_level() > $this->_ci_ob_level + 1)
|
|
{
|
|
ob_end_flush();
|
|
}
|
|
else
|
|
{
|
|
$_ci_CI->output->append_output(ob_get_contents());
|
|
@ob_end_clean();
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Load class
|
|
*
|
|
* This function loads the requested class.
|
|
*
|
|
* @param string the item that is being loaded
|
|
* @param mixed any additional parameters
|
|
* @param string an optional object name
|
|
* @return void
|
|
*/
|
|
protected function _ci_load_class($class, $params = NULL, $object_name = NULL)
|
|
{
|
|
// Get the class name, and while we're at it trim any slashes.
|
|
// The directory path can be included as part of the class name,
|
|
// but we don't want a leading slash
|
|
$class = str_replace('.php', '', trim($class, '/'));
|
|
|
|
// Was the path included with the class name?
|
|
// We look for a slash to determine this
|
|
$subdir = '';
|
|
if (($last_slash = strrpos($class, '/')) !== FALSE)
|
|
{
|
|
// Extract the path
|
|
$subdir = substr($class, 0, $last_slash + 1);
|
|
|
|
// Get the filename from the path
|
|
$class = substr($class, $last_slash + 1);
|
|
}
|
|
|
|
// We'll test for both lowercase and capitalized versions of the file name
|
|
foreach (array(ucfirst($class), strtolower($class)) as $class)
|
|
{
|
|
$subclass = APPPATH.'libraries/'.$subdir.config_item('subclass_prefix').$class.'.php';
|
|
|
|
// Is this a class extension request?
|
|
if (file_exists($subclass))
|
|
{
|
|
$baseclass = BASEPATH.'libraries/'.ucfirst($class).'.php';
|
|
|
|
if ( ! file_exists($baseclass))
|
|
{
|
|
log_message('error', "Unable to load the requested class: ".$class);
|
|
show_error("Unable to load the requested class: ".$class);
|
|
}
|
|
|
|
// Safety: Was the class already loaded by a previous call?
|
|
if (in_array($subclass, $this->_ci_loaded_files))
|
|
{
|
|
// Before we deem this to be a duplicate request, let's see
|
|
// if a custom object name is being supplied. If so, we'll
|
|
// return a new instance of the object
|
|
if ( ! is_null($object_name))
|
|
{
|
|
$CI =& get_instance();
|
|
if ( ! isset($CI->$object_name))
|
|
{
|
|
return $this->_ci_init_class($class, config_item('subclass_prefix'), $params, $object_name);
|
|
}
|
|
}
|
|
|
|
$is_duplicate = TRUE;
|
|
log_message('debug', $class." class already loaded. Second attempt ignored.");
|
|
return;
|
|
}
|
|
|
|
include_once($baseclass);
|
|
include_once($subclass);
|
|
$this->_ci_loaded_files[] = $subclass;
|
|
|
|
return $this->_ci_init_class($class, config_item('subclass_prefix'), $params, $object_name);
|
|
}
|
|
|
|
// Lets search for the requested library file and load it.
|
|
$is_duplicate = FALSE;
|
|
foreach ($this->_ci_library_paths as $path)
|
|
{
|
|
$filepath = $path.'libraries/'.$subdir.$class.'.php';
|
|
|
|
// Does the file exist? No? Bummer...
|
|
if ( ! file_exists($filepath))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
// Safety: Was the class already loaded by a previous call?
|
|
if (in_array($filepath, $this->_ci_loaded_files))
|
|
{
|
|
// Before we deem this to be a duplicate request, let's see
|
|
// if a custom object name is being supplied. If so, we'll
|
|
// return a new instance of the object
|
|
if ( ! is_null($object_name))
|
|
{
|
|
$CI =& get_instance();
|
|
if ( ! isset($CI->$object_name))
|
|
{
|
|
return $this->_ci_init_class($class, '', $params, $object_name);
|
|
}
|
|
}
|
|
|
|
$is_duplicate = TRUE;
|
|
log_message('debug', $class." class already loaded. Second attempt ignored.");
|
|
return;
|
|
}
|
|
|
|
include_once($filepath);
|
|
$this->_ci_loaded_files[] = $filepath;
|
|
return $this->_ci_init_class($class, '', $params, $object_name);
|
|
}
|
|
|
|
} // END FOREACH
|
|
|
|
// One last attempt. Maybe the library is in a subdirectory, but it wasn't specified?
|
|
if ($subdir == '')
|
|
{
|
|
$path = strtolower($class).'/'.$class;
|
|
return $this->_ci_load_class($path, $params);
|
|
}
|
|
|
|
// If we got this far we were unable to find the requested class.
|
|
// We do not issue errors if the load call failed due to a duplicate request
|
|
if ($is_duplicate == FALSE)
|
|
{
|
|
log_message('error', "Unable to load the requested class: ".$class);
|
|
show_error("Unable to load the requested class: ".$class);
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Instantiates a class
|
|
*
|
|
* @param string
|
|
* @param string
|
|
* @param bool
|
|
* @param string an optional object name
|
|
* @return null
|
|
*/
|
|
protected function _ci_init_class($class, $prefix = '', $config = FALSE, $object_name = NULL)
|
|
{
|
|
// Is there an associated config file for this class? Note: these should always be lowercase
|
|
if ($config === NULL)
|
|
{
|
|
// Fetch the config paths containing any package paths
|
|
$config_component = $this->_ci_get_component('config');
|
|
|
|
if (is_array($config_component->_config_paths))
|
|
{
|
|
// Break on the first found file, thus package files
|
|
// are not overridden by default paths
|
|
foreach ($config_component->_config_paths as $path)
|
|
{
|
|
// We test for both uppercase and lowercase, for servers that
|
|
// are case-sensitive with regard to file names. Check for environment
|
|
// first, global next
|
|
if (defined('ENVIRONMENT') AND file_exists($path .'config/'.ENVIRONMENT.'/'.strtolower($class).'.php'))
|
|
{
|
|
include($path .'config/'.ENVIRONMENT.'/'.strtolower($class).'.php');
|
|
break;
|
|
}
|
|
elseif (defined('ENVIRONMENT') AND file_exists($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php'))
|
|
{
|
|
include($path .'config/'.ENVIRONMENT.'/'.ucfirst(strtolower($class)).'.php');
|
|
break;
|
|
}
|
|
elseif (file_exists($path .'config/'.strtolower($class).'.php'))
|
|
{
|
|
include($path .'config/'.strtolower($class).'.php');
|
|
break;
|
|
}
|
|
elseif (file_exists($path .'config/'.ucfirst(strtolower($class)).'.php'))
|
|
{
|
|
include($path .'config/'.ucfirst(strtolower($class)).'.php');
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($prefix == '')
|
|
{
|
|
if (class_exists('CI_'.$class))
|
|
{
|
|
$name = 'CI_'.$class;
|
|
}
|
|
elseif (class_exists(config_item('subclass_prefix').$class))
|
|
{
|
|
$name = config_item('subclass_prefix').$class;
|
|
}
|
|
else
|
|
{
|
|
$name = $class;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$name = $prefix.$class;
|
|
}
|
|
|
|
// Is the class name valid?
|
|
if ( ! class_exists($name))
|
|
{
|
|
log_message('error', "Non-existent class: ".$name);
|
|
show_error("Non-existent class: ".$class);
|
|
}
|
|
|
|
// Set the variable name we will assign the class to
|
|
// Was a custom class name supplied? If so we'll use it
|
|
$class = strtolower($class);
|
|
|
|
if (is_null($object_name))
|
|
{
|
|
$classvar = ( ! isset($this->_ci_varmap[$class])) ? $class : $this->_ci_varmap[$class];
|
|
}
|
|
else
|
|
{
|
|
$classvar = $object_name;
|
|
}
|
|
|
|
// Save the class name and object name
|
|
$this->_ci_classes[$class] = $classvar;
|
|
|
|
// Instantiate the class
|
|
$CI =& get_instance();
|
|
if ($config !== NULL)
|
|
{
|
|
$CI->$classvar = new $name($config);
|
|
}
|
|
else
|
|
{
|
|
$CI->$classvar = new $name;
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Autoloader
|
|
*
|
|
* The config/autoload.php file contains an array that permits sub-systems,
|
|
* libraries, and helpers to be loaded automatically.
|
|
*
|
|
* @param array
|
|
* @return void
|
|
*/
|
|
private function _ci_autoloader()
|
|
{
|
|
if (defined('ENVIRONMENT') AND file_exists(APPPATH.'config/'.ENVIRONMENT.'/autoload.php'))
|
|
{
|
|
include(APPPATH.'config/'.ENVIRONMENT.'/autoload.php');
|
|
}
|
|
else
|
|
{
|
|
include(APPPATH.'config/autoload.php');
|
|
}
|
|
|
|
if ( ! isset($autoload))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
// Autoload packages
|
|
if (isset($autoload['packages']))
|
|
{
|
|
foreach ($autoload['packages'] as $package_path)
|
|
{
|
|
$this->add_package_path($package_path);
|
|
}
|
|
}
|
|
|
|
// Load any custom config file
|
|
if (count($autoload['config']) > 0)
|
|
{
|
|
$CI =& get_instance();
|
|
foreach ($autoload['config'] as $key => $val)
|
|
{
|
|
$CI->config->load($val);
|
|
}
|
|
}
|
|
|
|
// Autoload helpers and languages
|
|
foreach (array('helper', 'language') as $type)
|
|
{
|
|
if (isset($autoload[$type]) AND count($autoload[$type]) > 0)
|
|
{
|
|
$this->$type($autoload[$type]);
|
|
}
|
|
}
|
|
|
|
// A little tweak to remain backward compatible
|
|
// The $autoload['core'] item was deprecated
|
|
if ( ! isset($autoload['libraries']) AND isset($autoload['core']))
|
|
{
|
|
$autoload['libraries'] = $autoload['core'];
|
|
}
|
|
|
|
// Load libraries
|
|
if (isset($autoload['libraries']) AND count($autoload['libraries']) > 0)
|
|
{
|
|
// Load the database driver.
|
|
if (in_array('database', $autoload['libraries']))
|
|
{
|
|
$this->database();
|
|
$autoload['libraries'] = array_diff($autoload['libraries'], array('database'));
|
|
}
|
|
|
|
// Load all other libraries
|
|
foreach ($autoload['libraries'] as $item)
|
|
{
|
|
$this->library($item);
|
|
}
|
|
}
|
|
|
|
// Autoload models
|
|
if (isset($autoload['model']))
|
|
{
|
|
$this->model($autoload['model']);
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Object to Array
|
|
*
|
|
* Takes an object as input and converts the class variables to array key/vals
|
|
*
|
|
* @param object
|
|
* @return array
|
|
*/
|
|
protected function _ci_object_to_array($object)
|
|
{
|
|
return (is_object($object)) ? get_object_vars($object) : $object;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Get a reference to a specific library or model
|
|
*
|
|
* @param string
|
|
* @return bool
|
|
*/
|
|
protected function &_ci_get_component($component)
|
|
{
|
|
$CI =& get_instance();
|
|
return $CI->$component;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Prep filename
|
|
*
|
|
* This function preps the name of various items to make loading them more reliable.
|
|
*
|
|
* @param mixed
|
|
* @param string
|
|
* @return array
|
|
*/
|
|
protected function _ci_prep_filename($filename, $extension)
|
|
{
|
|
if ( ! is_array($filename))
|
|
{
|
|
return array(strtolower(str_replace('.php', '', str_replace($extension, '', $filename)).$extension));
|
|
}
|
|
else
|
|
{
|
|
foreach ($filename as $key => $val)
|
|
{
|
|
$filename[$key] = strtolower(str_replace('.php', '', str_replace($extension, '', $val)).$extension);
|
|
}
|
|
|
|
return $filename;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* End of file Loader.php */
|
|
/* Location: ./system/core/Loader.php */ |