1085 lines
26 KiB
PHP
1085 lines
26 KiB
PHP
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
|
|
/**
|
|
* CodeIgniter
|
|
*
|
|
* An open source application development framework for PHP 4.3.2 or newer
|
|
*
|
|
* @package CodeIgniter
|
|
* @author ExpressionEngine Dev Team
|
|
* @copyright Copyright (c) 2008 - 2010, EllisLab, Inc.
|
|
* @license http://codeigniter.com/user_guide/license.html
|
|
* @link http://codeigniter.com
|
|
* @since Version 1.0
|
|
* @filesource
|
|
*/
|
|
|
|
// ------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Loader Class
|
|
*
|
|
* Loads views and files
|
|
*
|
|
* @package CodeIgniter
|
|
* @subpackage Libraries
|
|
* @author ExpressionEngine Dev Team
|
|
* @category Loader
|
|
* @link http://codeigniter.com/user_guide/libraries/loader.html
|
|
*/
|
|
class CI_Loader {
|
|
|
|
// All these are set automatically. Don't mess with them.
|
|
var $_ci_ob_level;
|
|
var $_ci_view_path = '';
|
|
var $_ci_is_php5 = FALSE;
|
|
var $_ci_is_instance = FALSE; // Whether we should use $this or $CI =& get_instance()
|
|
var $_ci_cached_vars = array();
|
|
var $_ci_classes = array();
|
|
var $_ci_loaded_files = array();
|
|
var $_ci_models = array();
|
|
var $_ci_helpers = array();
|
|
var $_ci_plugins = array();
|
|
var $_ci_varmap = array('unit_test' => 'unit', 'user_agent' => 'agent');
|
|
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* Sets the path to the view files and gets the initial output buffering level
|
|
*
|
|
* @access public
|
|
*/
|
|
function CI_Loader()
|
|
{
|
|
$this->_ci_is_php5 = (floor(phpversion()) >= 5) ? TRUE : FALSE;
|
|
$this->_ci_view_path = APPPATH.'views/';
|
|
$this->_ci_ob_level = ob_get_level();
|
|
|
|
log_message('debug', "Loader Class Initialized");
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Class Loader
|
|
*
|
|
* This function lets users load and instantiate classes.
|
|
* It is designed to be called from a user's app controllers.
|
|
*
|
|
* @access public
|
|
* @param string the name of the class
|
|
* @param mixed the optional parameters
|
|
* @param string an optional object name
|
|
* @return void
|
|
*/
|
|
function library($library = '', $params = NULL, $object_name = NULL)
|
|
{
|
|
if ($library == '')
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
if ( ! is_null($params) AND ! is_array($params))
|
|
{
|
|
$params = NULL;
|
|
}
|
|
|
|
if (is_array($library))
|
|
{
|
|
foreach ($library as $class)
|
|
{
|
|
$this->_ci_load_class($class, $params, $object_name);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$this->_ci_load_class($library, $params, $object_name);
|
|
}
|
|
|
|
$this->_ci_assign_to_models();
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Model Loader
|
|
*
|
|
* This function lets users load and instantiate models.
|
|
*
|
|
* @access public
|
|
* @param string the name of the class
|
|
* @param string name for the model
|
|
* @param bool database connection
|
|
* @return void
|
|
*/
|
|
function model($model, $name = '', $db_conn = FALSE)
|
|
{
|
|
if (is_array($model))
|
|
{
|
|
foreach($model as $babe)
|
|
{
|
|
$this->model($babe);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if ($model == '')
|
|
{
|
|
return;
|
|
}
|
|
|
|
// Is the model in a sub-folder? If so, parse out the filename and path.
|
|
if (strpos($model, '/') === FALSE)
|
|
{
|
|
$path = '';
|
|
}
|
|
else
|
|
{
|
|
$x = explode('/', $model);
|
|
$model = end($x);
|
|
unset($x[count($x)-1]);
|
|
$path = implode('/', $x).'/';
|
|
}
|
|
|
|
if ($name == '')
|
|
{
|
|
$name = $model;
|
|
}
|
|
|
|
if (in_array($name, $this->_ci_models, TRUE))
|
|
{
|
|
return;
|
|
}
|
|
|
|
$CI =& get_instance();
|
|
if (isset($CI->$name))
|
|
{
|
|
show_error('The model name you are loading is the name of a resource that is already being used: '.$name);
|
|
}
|
|
|
|
$model = strtolower($model);
|
|
|
|
if ( ! file_exists(APPPATH.'models/'.$path.$model.EXT))
|
|
{
|
|
show_error('Unable to locate the model you have specified: '.$model);
|
|
}
|
|
|
|
if ($db_conn !== FALSE AND ! class_exists('CI_DB'))
|
|
{
|
|
if ($db_conn === TRUE)
|
|
$db_conn = '';
|
|
|
|
$CI->load->database($db_conn, FALSE, TRUE);
|
|
}
|
|
|
|
if ( ! class_exists('Model'))
|
|
{
|
|
load_class('Model', FALSE);
|
|
}
|
|
|
|
require_once(APPPATH.'models/'.$path.$model.EXT);
|
|
|
|
$model = ucfirst($model);
|
|
|
|
$CI->$name = new $model();
|
|
$CI->$name->_assign_libraries();
|
|
|
|
$this->_ci_models[] = $name;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Database Loader
|
|
*
|
|
* @access public
|
|
* @param string the DB credentials
|
|
* @param bool whether to return the DB object
|
|
* @param bool whether to enable active record (this allows us to override the config setting)
|
|
* @return object
|
|
*/
|
|
function database($params = '', $return = FALSE, $active_record = FALSE)
|
|
{
|
|
// Grab the super object
|
|
$CI =& get_instance();
|
|
|
|
// Do we even need to load the database class?
|
|
if (class_exists('CI_DB') AND $return == FALSE AND $active_record == FALSE AND isset($CI->db) AND is_object($CI->db))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
require_once(BASEPATH.'database/DB'.EXT);
|
|
|
|
if ($return === TRUE)
|
|
{
|
|
return DB($params, $active_record);
|
|
}
|
|
|
|
// Initialize the db variable. Needed to prevent
|
|
// reference errors with some configurations
|
|
$CI->db = '';
|
|
|
|
// Load the DB class
|
|
$CI->db =& DB($params, $active_record);
|
|
|
|
// Assign the DB object to any existing models
|
|
$this->_ci_assign_to_models();
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Load the Utilities Class
|
|
*
|
|
* @access public
|
|
* @return string
|
|
*/
|
|
function dbutil()
|
|
{
|
|
if ( ! class_exists('CI_DB'))
|
|
{
|
|
$this->database();
|
|
}
|
|
|
|
$CI =& get_instance();
|
|
|
|
// for backwards compatibility, load dbforge so we can extend dbutils off it
|
|
// this use is deprecated and strongly discouraged
|
|
$CI->load->dbforge();
|
|
|
|
require_once(BASEPATH.'database/DB_utility'.EXT);
|
|
require_once(BASEPATH.'database/drivers/'.$CI->db->dbdriver.'/'.$CI->db->dbdriver.'_utility'.EXT);
|
|
$class = 'CI_DB_'.$CI->db->dbdriver.'_utility';
|
|
|
|
$CI->dbutil =& instantiate_class(new $class());
|
|
|
|
$CI->load->_ci_assign_to_models();
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Load the Database Forge Class
|
|
*
|
|
* @access public
|
|
* @return string
|
|
*/
|
|
function dbforge()
|
|
{
|
|
if ( ! class_exists('CI_DB'))
|
|
{
|
|
$this->database();
|
|
}
|
|
|
|
$CI =& get_instance();
|
|
|
|
require_once(BASEPATH.'database/DB_forge'.EXT);
|
|
require_once(BASEPATH.'database/drivers/'.$CI->db->dbdriver.'/'.$CI->db->dbdriver.'_forge'.EXT);
|
|
$class = 'CI_DB_'.$CI->db->dbdriver.'_forge';
|
|
|
|
$CI->dbforge = new $class();
|
|
|
|
$CI->load->_ci_assign_to_models();
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Load View
|
|
*
|
|
* This function is used to load a "view" file. It has three parameters:
|
|
*
|
|
* 1. The name of the "view" file to be included.
|
|
* 2. An associative array of data to be extracted for use in the view.
|
|
* 3. TRUE/FALSE - whether to return the data or load it. In
|
|
* some cases it's advantageous to be able to return data so that
|
|
* a developer can process it in some way.
|
|
*
|
|
* @access public
|
|
* @param string
|
|
* @param array
|
|
* @param bool
|
|
* @return void
|
|
*/
|
|
function view($view, $vars = array(), $return = FALSE)
|
|
{
|
|
return $this->_ci_load(array('_ci_view' => $view, '_ci_vars' => $this->_ci_object_to_array($vars), '_ci_return' => $return));
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Load File
|
|
*
|
|
* This is a generic file loader
|
|
*
|
|
* @access public
|
|
* @param string
|
|
* @param bool
|
|
* @return string
|
|
*/
|
|
function file($path, $return = FALSE)
|
|
{
|
|
return $this->_ci_load(array('_ci_path' => $path, '_ci_return' => $return));
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set Variables
|
|
*
|
|
* Once variables are set they become available within
|
|
* the controller class and its "view" files.
|
|
*
|
|
* @access public
|
|
* @param array
|
|
* @return void
|
|
*/
|
|
function vars($vars = array(), $val = '')
|
|
{
|
|
if ($val != '' AND is_string($vars))
|
|
{
|
|
$vars = array($vars => $val);
|
|
}
|
|
|
|
$vars = $this->_ci_object_to_array($vars);
|
|
|
|
if (is_array($vars) AND count($vars) > 0)
|
|
{
|
|
foreach ($vars as $key => $val)
|
|
{
|
|
$this->_ci_cached_vars[$key] = $val;
|
|
}
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Load Helper
|
|
*
|
|
* This function loads the specified helper file.
|
|
*
|
|
* @access public
|
|
* @param mixed
|
|
* @return void
|
|
*/
|
|
function helper($helpers = array())
|
|
{
|
|
if ( ! is_array($helpers))
|
|
{
|
|
$helpers = array($helpers);
|
|
}
|
|
|
|
foreach ($helpers as $helper)
|
|
{
|
|
$helper = strtolower(str_replace(EXT, '', str_replace('_helper', '', $helper)).'_helper');
|
|
|
|
if (isset($this->_ci_helpers[$helper]))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
$ext_helper = APPPATH.'helpers/'.config_item('subclass_prefix').$helper.EXT;
|
|
|
|
// Is this a helper extension request?
|
|
if (file_exists($ext_helper))
|
|
{
|
|
$base_helper = BASEPATH.'helpers/'.$helper.EXT;
|
|
|
|
if ( ! file_exists($base_helper))
|
|
{
|
|
show_error('Unable to load the requested file: helpers/'.$helper.EXT);
|
|
}
|
|
|
|
include_once($ext_helper);
|
|
include_once($base_helper);
|
|
}
|
|
elseif (file_exists(APPPATH.'helpers/'.$helper.EXT))
|
|
{
|
|
include_once(APPPATH.'helpers/'.$helper.EXT);
|
|
}
|
|
else
|
|
{
|
|
if (file_exists(BASEPATH.'helpers/'.$helper.EXT))
|
|
{
|
|
include_once(BASEPATH.'helpers/'.$helper.EXT);
|
|
}
|
|
else
|
|
{
|
|
show_error('Unable to load the requested file: helpers/'.$helper.EXT);
|
|
}
|
|
}
|
|
|
|
$this->_ci_helpers[$helper] = TRUE;
|
|
log_message('debug', 'Helper loaded: '.$helper);
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Load Helpers
|
|
*
|
|
* This is simply an alias to the above function in case the
|
|
* user has written the plural form of this function.
|
|
*
|
|
* @access public
|
|
* @param array
|
|
* @return void
|
|
*/
|
|
function helpers($helpers = array())
|
|
{
|
|
$this->helper($helpers);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Load Plugin
|
|
*
|
|
* This function loads the specified plugin.
|
|
*
|
|
* @access public
|
|
* @param array
|
|
* @return void
|
|
*/
|
|
function plugin($plugins = array())
|
|
{
|
|
if ( ! is_array($plugins))
|
|
{
|
|
$plugins = array($plugins);
|
|
}
|
|
|
|
foreach ($plugins as $plugin)
|
|
{
|
|
$plugin = strtolower(str_replace(EXT, '', str_replace('_pi', '', $plugin)).'_pi');
|
|
|
|
if (isset($this->_ci_plugins[$plugin]))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if (file_exists(APPPATH.'plugins/'.$plugin.EXT))
|
|
{
|
|
include_once(APPPATH.'plugins/'.$plugin.EXT);
|
|
}
|
|
else
|
|
{
|
|
if (file_exists(BASEPATH.'plugins/'.$plugin.EXT))
|
|
{
|
|
include_once(BASEPATH.'plugins/'.$plugin.EXT);
|
|
}
|
|
else
|
|
{
|
|
show_error('Unable to load the requested file: plugins/'.$plugin.EXT);
|
|
}
|
|
}
|
|
|
|
$this->_ci_plugins[$plugin] = TRUE;
|
|
log_message('debug', 'Plugin loaded: '.$plugin);
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Load Plugins
|
|
*
|
|
* This is simply an alias to the above function in case the
|
|
* user has written the plural form of this function.
|
|
*
|
|
* @access public
|
|
* @param array
|
|
* @return void
|
|
*/
|
|
function plugins($plugins = array())
|
|
{
|
|
$this->plugin($plugins);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Loads a language file
|
|
*
|
|
* @access public
|
|
* @param array
|
|
* @param string
|
|
* @return void
|
|
*/
|
|
function language($file = array(), $lang = '')
|
|
{
|
|
$CI =& get_instance();
|
|
|
|
if ( ! is_array($file))
|
|
{
|
|
$file = array($file);
|
|
}
|
|
|
|
foreach ($file as $langfile)
|
|
{
|
|
$CI->lang->load($langfile, $lang);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Loads language files for scaffolding
|
|
*
|
|
* @access public
|
|
* @param string
|
|
* @return arra
|
|
*/
|
|
function scaffold_language($file = '', $lang = '', $return = FALSE)
|
|
{
|
|
$CI =& get_instance();
|
|
return $CI->lang->load($file, $lang, $return);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Loads a config file
|
|
*
|
|
* @access public
|
|
* @param string
|
|
* @return void
|
|
*/
|
|
function config($file = '', $use_sections = FALSE, $fail_gracefully = FALSE)
|
|
{
|
|
$CI =& get_instance();
|
|
$CI->config->load($file, $use_sections, $fail_gracefully);
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Scaffolding Loader
|
|
*
|
|
* This initializing function works a bit different than the
|
|
* others. It doesn't load the class. Instead, it simply
|
|
* sets a flag indicating that scaffolding is allowed to be
|
|
* used. The actual scaffolding function below is
|
|
* called by the front controller based on whether the
|
|
* second segment of the URL matches the "secret" scaffolding
|
|
* word stored in the application/config/routes.php
|
|
*
|
|
* @access public
|
|
* @param string
|
|
* @return void
|
|
*/
|
|
function scaffolding($table = '')
|
|
{
|
|
if ($table === FALSE)
|
|
{
|
|
show_error('You must include the name of the table you would like to access when you initialize scaffolding');
|
|
}
|
|
|
|
$CI =& get_instance();
|
|
$CI->_ci_scaffolding = TRUE;
|
|
$CI->_ci_scaff_table = $table;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Loader
|
|
*
|
|
* This function is used to load views and files.
|
|
* Variables are prefixed with _ci_ to avoid symbol collision with
|
|
* variables made available to view files
|
|
*
|
|
* @access private
|
|
* @param array
|
|
* @return void
|
|
*/
|
|
function _ci_load($_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];
|
|
}
|
|
|
|
// Set the path to the requested file
|
|
if ($_ci_path == '')
|
|
{
|
|
$_ci_ext = pathinfo($_ci_view, PATHINFO_EXTENSION);
|
|
$_ci_file = ($_ci_ext == '') ? $_ci_view.EXT : $_ci_view;
|
|
$_ci_path = $this->_ci_view_path.$_ci_file;
|
|
}
|
|
else
|
|
{
|
|
$_ci_x = explode('/', $_ci_path);
|
|
$_ci_file = end($_ci_x);
|
|
}
|
|
|
|
if ( ! file_exists($_ci_path))
|
|
{
|
|
show_error('Unable to load the requested file: '.$_ci_file);
|
|
}
|
|
|
|
// This allows anything loaded using $this->load (views, files, etc.)
|
|
// to become accessible from within the Controller and Model functions.
|
|
// Only needed when running PHP 5
|
|
|
|
if ($this->_ci_is_instance())
|
|
{
|
|
$_ci_CI =& get_instance();
|
|
foreach (get_object_vars($_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
|
|
{
|
|
// PHP 4 requires that we use a global
|
|
global $OUT;
|
|
$OUT->append_output(ob_get_contents());
|
|
@ob_end_clean();
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Load class
|
|
*
|
|
* This function loads the requested class.
|
|
*
|
|
* @access private
|
|
* @param string the item that is being loaded
|
|
* @param mixed any additional parameters
|
|
* @param string an optional object name
|
|
* @return void
|
|
*/
|
|
function _ci_load_class($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
|
|
$class = str_replace(EXT, '', trim($class, '/'));
|
|
|
|
// Was the path included with the class name?
|
|
// We look for a slash to determine this
|
|
$subdir = '';
|
|
if (strpos($class, '/') !== FALSE)
|
|
{
|
|
// explode the path so we can separate the filename from the path
|
|
$x = explode('/', $class);
|
|
|
|
// Reset the $class variable now that we know the actual filename
|
|
$class = end($x);
|
|
|
|
// Kill the filename from the array
|
|
unset($x[count($x)-1]);
|
|
|
|
// Glue the path back together, sans filename
|
|
$subdir = implode($x, '/').'/';
|
|
}
|
|
|
|
// 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').$class.EXT;
|
|
|
|
// Is this a class extension request?
|
|
if (file_exists($subclass))
|
|
{
|
|
$baseclass = BASEPATH.'libraries/'.ucfirst($class).EXT;
|
|
|
|
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.
|
|
$is_duplicate = FALSE;
|
|
for ($i = 1; $i < 3; $i++)
|
|
{
|
|
$path = ($i % 2) ? APPPATH : BASEPATH;
|
|
$filepath = $path.'libraries/'.$subdir.$class.EXT;
|
|
|
|
// Does the file exist? No? Bummer...
|
|
if ( ! file_exists($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
|
|
*
|
|
* @access private
|
|
* @param string
|
|
* @param string
|
|
* @param string an optional object name
|
|
* @return null
|
|
*/
|
|
function _ci_init_class($class, $prefix = '', $config = FALSE, $object_name = NULL)
|
|
{
|
|
// Is there an associated config file for this class?
|
|
if ($config === NULL)
|
|
{
|
|
// We test for both uppercase and lowercase, for servers that
|
|
// are case-sensitive with regard to file names
|
|
if (file_exists(APPPATH.'config/'.strtolower($class).EXT))
|
|
{
|
|
include_once(APPPATH.'config/'.strtolower($class).EXT);
|
|
}
|
|
elseif (file_exists(APPPATH.'config/'.ucfirst(strtolower($class)).EXT))
|
|
{
|
|
include_once(APPPATH.'config/'.ucfirst(strtolower($class)).EXT);
|
|
}
|
|
}
|
|
|
|
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 $name;
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Autoloader
|
|
*
|
|
* The config/autoload.php file contains an array that permits sub-systems,
|
|
* libraries, plugins, and helpers to be loaded automatically.
|
|
*
|
|
* @access private
|
|
* @param array
|
|
* @return void
|
|
*/
|
|
function _ci_autoloader()
|
|
{
|
|
include_once(APPPATH.'config/autoload'.EXT);
|
|
|
|
if ( ! isset($autoload))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
// Load any custom config file
|
|
if (count($autoload['config']) > 0)
|
|
{
|
|
$CI =& get_instance();
|
|
foreach ($autoload['config'] as $key => $val)
|
|
{
|
|
$CI->config->load($val);
|
|
}
|
|
}
|
|
|
|
// Autoload plugins, helpers and languages
|
|
foreach (array('helper', 'plugin', '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']))
|
|
{
|
|
$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 scaffolding
|
|
if (in_array('scaffolding', $autoload['libraries']))
|
|
{
|
|
$this->scaffolding();
|
|
$autoload['libraries'] = array_diff($autoload['libraries'], array('scaffolding'));
|
|
}
|
|
|
|
// Load all other libraries
|
|
foreach ($autoload['libraries'] as $item)
|
|
{
|
|
$this->library($item);
|
|
}
|
|
}
|
|
|
|
// Autoload models
|
|
if (isset($autoload['model']))
|
|
{
|
|
$this->model($autoload['model']);
|
|
}
|
|
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Assign to Models
|
|
*
|
|
* Makes sure that anything loaded by the loader class (libraries, plugins, etc.)
|
|
* will be available to models, if any exist.
|
|
*
|
|
* @access private
|
|
* @param object
|
|
* @return array
|
|
*/
|
|
function _ci_assign_to_models()
|
|
{
|
|
if (count($this->_ci_models) == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if ($this->_ci_is_instance())
|
|
{
|
|
$CI =& get_instance();
|
|
foreach ($this->_ci_models as $model)
|
|
{
|
|
$CI->$model->_assign_libraries();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
foreach ($this->_ci_models as $model)
|
|
{
|
|
$this->$model->_assign_libraries();
|
|
}
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Object to Array
|
|
*
|
|
* Takes an object as input and converts the class variables to array key/vals
|
|
*
|
|
* @access private
|
|
* @param object
|
|
* @return array
|
|
*/
|
|
function _ci_object_to_array($object)
|
|
{
|
|
return (is_object($object)) ? get_object_vars($object) : $object;
|
|
}
|
|
|
|
// --------------------------------------------------------------------
|
|
|
|
/**
|
|
* Determines whether we should use the CI instance or $this
|
|
*
|
|
* @access private
|
|
* @return bool
|
|
*/
|
|
function _ci_is_instance()
|
|
{
|
|
if ($this->_ci_is_php5 == TRUE)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
global $CI;
|
|
return (is_object($CI)) ? TRUE : FALSE;
|
|
}
|
|
|
|
}
|
|
|
|
/* End of file Loader.php */
|
|
/* Location: ./system/libraries/Loader.php */ |