From 026585710c5ad4c5a8e5544d177b6a870f56123e Mon Sep 17 00:00:00 2001 From: Derek Allard Date: Thu, 20 Dec 2007 14:00:50 +0000 Subject: removed an unneeded setting of $config to NULL --- system/libraries/Loader.php | 986 +++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 985 insertions(+), 1 deletion(-) (limited to 'system/libraries/Loader.php') diff --git a/system/libraries/Loader.php b/system/libraries/Loader.php index 6e4c594e4..2de2bd7f2 100644 --- a/system/libraries/Loader.php +++ b/system/libraries/Loader.php @@ -1 +1,985 @@ - '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/'; $this->_ci_ob_level = ob_get_level(); log_message('debug', "Loader Class Initialized"); } // -------------------------------------------------------------------- /** * Class Loader * * This function lets users load and instantiate classes. * It is designed to be called from a user's app controllers. * * @access public * @param string the name of the class * @param mixed the optional parameters * @return void */ function library($library = '', $params = NULL) { if ($library == '') { return FALSE; } if (is_array($library)) { foreach ($library as $class) { $this->_ci_load_class($class, $params); } } else { $this->_ci_load_class($library, $params); } $this->_ci_assign_to_models(); } // -------------------------------------------------------------------- /** * Model Loader * * This function lets users load and instantiate models. * * @access public * @param string the name of the class * @param mixed any initialization parameters * @return void */ function model($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')) { require_once(BASEPATH.'libraries/Model'.EXT); } 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) { // Do we even need to load the database class? if (class_exists('CI_DB') AND $return == FALSE AND $active_record == FALSE) { return FALSE; } require_once(BASEPATH.'database/DB'.EXT); if ($return === TRUE) { return DB($params, $active_record); } // Grab the super object $CI =& get_instance(); // 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(); } $CI =& get_instance(); require_once(BASEPATH.'database/DB_utility'.EXT); require_once(BASEPATH.'database/drivers/'.$CI->db->dbdriver.'/'.$CI->db->dbdriver.'_utility'.EXT); $class = 'CI_DB_'.$CI->db->dbdriver.'_utility'; $CI->dbutil = 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('view' => $view, 'vars' => $this->_ci_object_to_array($vars), '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('path' => $path, '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()) { $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[$helper])) { continue; } if (file_exists(APPPATH.'helpers/'.$helper.EXT)) { include_once(APPPATH.'helpers/'.$helper.EXT); } else { if (file_exists(BASEPATH.'helpers/'.$helper.EXT)) { include(BASEPATH.'helpers/'.$helper.EXT); } else { show_error('Unable to load the requested file: helpers/'.$helper.EXT); } } $this->_ci_helpers[$helper] = TRUE; } log_message('debug', 'Helpers loaded: '.implode(', ', $helpers)); } // -------------------------------------------------------------------- /** * Load Helpers * * This is simply an alias to the above function in case the * user has written the plural form of this function. * * @access public * @param array * @return void */ function helpers($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('_plugin.', '', $plugin)).'_pi'); if (isset($this->_ci_plugins[$plugin])) { continue; } if (file_exists(APPPATH.'plugins/'.$plugin.EXT)) { include(APPPATH.'plugins/'.$plugin.EXT); } else { if (file_exists(BASEPATH.'plugins/'.$plugin.EXT)) { include(BASEPATH.'plugins/'.$plugin.EXT); } else { show_error('Unable to load the requested file: plugins/'.$plugin.EXT); } } $this->_ci_plugins[$plugin] = TRUE; } log_message('debug', 'Plugins loaded: '.implode(', ', $plugins)); } // -------------------------------------------------------------------- /** * Load Plugins * * This is simply an alias to the above function in case the * user has written the plural form of this function. * * @access public * @param array * @return void */ function plugins($plugins = array()) { $this->plugin($plugins); } // -------------------------------------------------------------------- /** * Load Script * * This function loads the specified include file from the * application/scripts/ folder. * * NOTE: This feature has been deprecated but it will remain available * for legacy users. * * @access public * @param array * @return void */ function script($scripts = array()) { if ( ! is_array($scripts)) { $scripts = array($scripts); } foreach ($scripts as $script) { $script = strtolower(str_replace(EXT, '', $script)); if (isset($this->_ci_scripts[$script])) { continue; } if ( ! file_exists(APPPATH.'scripts/'.$script.EXT)) { show_error('Unable to load the requested script: scripts/'.$script.EXT); } include(APPPATH.'scripts/'.$script.EXT); } log_message('debug', 'Scripts loaded: '.implode(', ', $scripts)); } // -------------------------------------------------------------------- /** * Loads a language file * * @access public * @param array * @param string * @return void */ function language($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 = $table; } // -------------------------------------------------------------------- /** * Loader * * This function is used to load views and files. * * @access private * @param array * @return void */ function _ci_load($data) { // Set the default data variables foreach (array('view', 'vars', 'path', 'return') as $val) { $$val = ( ! isset($data[$val])) ? FALSE : $data[$val]; } // Set the path to the requested file if ($path == '') { $ext = pathinfo($view, PATHINFO_EXTENSION); $file = ($ext == '') ? $view.EXT : $view; $path = $this->_ci_view_path.$file; } else { $x = explode('/', $path); $file = end($x); } if ( ! file_exists($path)) { show_error('Unable to load the requested file: '.$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 =& get_instance(); foreach (get_object_vars($CI) as $key => $var) { if ( ! isset($this->$key)) { $this->$key =& $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($vars)) { $this->_ci_cached_vars = array_merge($this->_ci_cached_vars, $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(' $this->_ci_ob_level + 1) { ob_end_flush(); } else { // PHP 4 requires that we use a global global $OUT; $OUT->set_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 * @return void */ function _ci_load_class($class, $params = NULL) { // Get the class name $class = str_replace(EXT, '', $class); // We'll test for both lowercase and capitalized versions of the file name foreach (array(ucfirst($class), strtolower($class)) as $class) { $subclass = APPPATH.'libraries/'.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_classes)) { $is_duplicate = TRUE; log_message('debug', $class." class already loaded. Second attempt ignored."); return; } include($baseclass); include($subclass); $this->_ci_classes[] = $subclass; return $this->_ci_init_class($class, config_item('subclass_prefix'), $params); } // 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/'.$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_classes)) { $is_duplicate = TRUE; log_message('debug', $class." class already loaded. Second attempt ignored."); return; } include($filepath); $this->_ci_classes[] = $filepath; return $this->_ci_init_class($class, '', $params); } } // END FOREACH // 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 * @return null */ function _ci_init_class($class, $prefix = '', $config = FALSE) { // Is there an associated config file for this class? if ($config === NULL) { $config = NULL; if (file_exists(APPPATH.'config/'.$class.EXT)) { include(APPPATH.'config/'.$class.EXT); } } if ($prefix == '') { $name = (class_exists('CI_'.$class)) ? 'CI_'.$class : $class; } else { $name = $prefix.$class; } // Set the variable name we will assign the class to $class = strtolower($class); $classvar = ( ! isset($this->_ci_varmap[$class])) ? $class : $this->_ci_varmap[$class]; // 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(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, scripts and languages foreach (array('helper', 'plugin', 'script', 'language') as $type) { if (isset($autoload[$type]) AND count($autoload[$type]) > 0) { $this->$type($autoload[$type]); } } // Autoload models if (isset($autoload['model'])) { $this->model($autoload['model']); } // 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); } // Load the model class. if (in_array('model', $autoload['libraries'])) { $this->model(); $autoload['libraries'] = array_diff($autoload['libraries'], array('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; } } ?> \ No newline at end of file + '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 + * @return void + */ + function library($library = '', $params = NULL) + { + if ($library == '') + { + return FALSE; + } + + if (is_array($library)) + { + foreach ($library as $class) + { + $this->_ci_load_class($class, $params); + } + } + else + { + $this->_ci_load_class($library, $params); + } + + $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 mixed any initialization parameters + * @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')) + { + require_once(BASEPATH.'libraries/Model'.EXT); + } + + 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) + { + // Do we even need to load the database class? + if (class_exists('CI_DB') AND $return == FALSE AND $active_record == FALSE) + { + return FALSE; + } + + require_once(BASEPATH.'database/DB'.EXT); + + if ($return === TRUE) + { + return DB($params, $active_record); + } + + // Grab the super object + $CI =& get_instance(); + + // 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(); + + 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 = 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('view' => $view, 'vars' => $this->_ci_object_to_array($vars), '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('path' => $path, '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()) + { + $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; + } + + if (file_exists(APPPATH.'helpers/'.$helper.EXT)) + { + include_once(APPPATH.'helpers/'.$helper.EXT); + } + else + { + if (file_exists(BASEPATH.'helpers/'.$helper.EXT)) + { + include(BASEPATH.'helpers/'.$helper.EXT); + } + else + { + show_error('Unable to load the requested file: helpers/'.$helper.EXT); + } + } + + $this->_ci_helpers[$helper] = TRUE; + + } + + log_message('debug', 'Helpers loaded: '.implode(', ', $helpers)); + } + + // -------------------------------------------------------------------- + + /** + * 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('_plugin.', '', $plugin)).'_pi'); + + if (isset($this->_ci_plugins[$plugin])) + { + continue; + } + + if (file_exists(APPPATH.'plugins/'.$plugin.EXT)) + { + include(APPPATH.'plugins/'.$plugin.EXT); + } + else + { + if (file_exists(BASEPATH.'plugins/'.$plugin.EXT)) + { + include(BASEPATH.'plugins/'.$plugin.EXT); + } + else + { + show_error('Unable to load the requested file: plugins/'.$plugin.EXT); + } + } + + $this->_ci_plugins[$plugin] = TRUE; + } + + log_message('debug', 'Plugins loaded: '.implode(', ', $plugins)); + } + + // -------------------------------------------------------------------- + + /** + * 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); + } + + // -------------------------------------------------------------------- + + /** + * Load Script + * + * This function loads the specified include file from the + * application/scripts/ folder. + * + * NOTE: This feature has been deprecated but it will remain available + * for legacy users. + * + * @access public + * @param array + * @return void + */ + function script($scripts = array()) + { + if ( ! is_array($scripts)) + { + $scripts = array($scripts); + } + + foreach ($scripts as $script) + { + $script = strtolower(str_replace(EXT, '', $script)); + + if (isset($this->_ci_scripts[$script])) + { + continue; + } + + if ( ! file_exists(APPPATH.'scripts/'.$script.EXT)) + { + show_error('Unable to load the requested script: scripts/'.$script.EXT); + } + + include(APPPATH.'scripts/'.$script.EXT); + } + + log_message('debug', 'Scripts loaded: '.implode(', ', $scripts)); + } + + // -------------------------------------------------------------------- + + /** + * 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. + * + * @access private + * @param array + * @return void + */ + function _ci_load($data) + { + // Set the default data variables + foreach (array('view', 'vars', 'path', 'return') as $val) + { + $$val = ( ! isset($data[$val])) ? FALSE : $data[$val]; + } + + // Set the path to the requested file + if ($path == '') + { + $ext = pathinfo($view, PATHINFO_EXTENSION); + $file = ($ext == '') ? $view.EXT : $view; + $path = $this->_ci_view_path.$file; + } + else + { + $x = explode('/', $path); + $file = end($x); + } + + if ( ! file_exists($path)) + { + show_error('Unable to load the requested file: '.$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()) + { + $CI =& get_instance(); + foreach (get_object_vars($CI) as $key => $var) + { + if ( ! isset($this->$key)) + { + $this->$key =& $CI->$key; + } + } + } + + /* + * Extract and cache variables + * + * You can either set variables using the dedicated $this->load_vars() + * function or via the second parameter of this function. We'll merge + * the two types and cache them so that views that are embedded within + * other views can have access to these variables. + */ + if (is_array($vars)) + { + $this->_ci_cached_vars = array_merge($this->_ci_cached_vars, $vars); + } + extract($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(' $this->_ci_ob_level + 1) + { + ob_end_flush(); + } + else + { + // PHP 4 requires that we use a global + global $OUT; + $OUT->set_output(ob_get_contents()); + @ob_end_clean(); + } + } + + // -------------------------------------------------------------------- + + /** + * Load class + * + * This function loads the requested class. + * + * @access private + * @param string the item that is being loaded + * @param mixed any additional parameters + * @return void + */ + function _ci_load_class($class, $params = NULL) + { + // Get the class name + $class = str_replace(EXT, '', $class); + + // We'll test for both lowercase and capitalized versions of the file name + foreach (array(ucfirst($class), strtolower($class)) as $class) + { + $subclass = APPPATH.'libraries/'.config_item('subclass_prefix').$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_classes)) + { + $is_duplicate = TRUE; + log_message('debug', $class." class already loaded. Second attempt ignored."); + return; + } + + include($baseclass); + include($subclass); + $this->_ci_classes[] = $subclass; + + return $this->_ci_init_class($class, config_item('subclass_prefix'), $params); + } + + // 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 = $path.'libraries/'.$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_classes)) + { + $is_duplicate = TRUE; + log_message('debug', $class." class already loaded. Second attempt ignored."); + return; + } + + include($filepath); + $this->_ci_classes[] = $filepath; + return $this->_ci_init_class($class, '', $params); + } + } // END FOREACH + + // If we got this far we were unable to find the requested class. + // We do not issue errors if the load call failed due to a duplicate request + if ($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 + * @return null + */ + function _ci_init_class($class, $prefix = '', $config = FALSE) + { + // Is there an associated config file for this class? + if ($config === NULL) + { + if (file_exists(APPPATH.'config/'.$class.EXT)) + { + include(APPPATH.'config/'.$class.EXT); + } + } + + if ($prefix == '') + { + $name = (class_exists('CI_'.$class)) ? 'CI_'.$class : $class; + } + else + { + $name = $prefix.$class; + } + + // Set the variable name we will assign the class to + $class = strtolower($class); + $classvar = ( ! isset($this->_ci_varmap[$class])) ? $class : $this->_ci_varmap[$class]; + + // Instantiate the class + $CI =& get_instance(); + if ($config !== NULL) + { + $CI->$classvar = new $name($config); + } + else + { + $CI->$classvar = new $name; + } + } + + // -------------------------------------------------------------------- + + /** + * Autoloader + * + * The config/autoload.php file contains an array that permits sub-systems, + * libraries, plugins, and helpers to be loaded automatically. + * + * @access private + * @param array + * @return void + */ + function _ci_autoloader() + { + include(APPPATH.'config/autoload'.EXT); + + if ( ! isset($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, scripts and languages + foreach (array('helper', 'plugin', 'script', 'language') as $type) + { + if (isset($autoload[$type]) AND count($autoload[$type]) > 0) + { + $this->$type($autoload[$type]); + } + } + + // Autoload models + if (isset($autoload['model'])) + { + $this->model($autoload['model']); + } + + // 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); + } + + // Load the model class. + if (in_array('model', $autoload['libraries'])) + { + $this->model(); + $autoload['libraries'] = array_diff($autoload['libraries'], array('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; + } + +} +?> \ No newline at end of file -- cgit v1.2.3-24-g4f1b