diff options
Diffstat (limited to 'system/core/Loader.php')
| -rw-r--r-- | system/core/Loader.php | 340 |
1 files changed, 198 insertions, 142 deletions
diff --git a/system/core/Loader.php b/system/core/Loader.php index a30238c3e..f70ee0334 100644 --- a/system/core/Loader.php +++ b/system/core/Loader.php @@ -31,8 +31,11 @@ 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_library_paths = array(); + var $_ci_model_paths = array(); + var $_ci_helper_paths = array(); var $_ci_is_instance = FALSE; // Whether we should use $this or $CI =& get_instance() + var $_base_classes = array(); // Set by the controller class var $_ci_cached_vars = array(); var $_ci_classes = array(); var $_ci_loaded_files = array(); @@ -51,10 +54,12 @@ class CI_Loader { */ 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(); - + $this->_ci_library_paths = array(APPPATH, BASEPATH); + $this->_ci_helper_paths = array(APPPATH, BASEPATH); + $this->_ci_model_paths = array(APPPATH); + log_message('debug', "Loader Class Initialized"); } @@ -74,12 +79,12 @@ class CI_Loader { */ function library($library = '', $params = NULL, $object_name = NULL) { - if ($library == '') + if ($library == '' OR isset($this->_base_classes[$library])) { return FALSE; } - if ( ! is_null($params) AND ! is_array($params)) + if ( ! is_null($params) && ! is_array($params)) { $params = NULL; } @@ -128,17 +133,16 @@ class CI_Loader { return; } + $path = ''; + // Is the model in a sub-folder? If so, parse out the filename and path. - if (strpos($model, '/') === FALSE) - { - $path = ''; - } - else + if (($last_slash = strrpos($model, '/')) !== FALSE) { - $x = explode('/', $model); - $model = end($x); - unset($x[count($x)-1]); - $path = implode('/', $x).'/'; + // The path is in front of the last slash + $path = substr($model, 0, $last_slash + 1); + + // And the model name behind it + $model = substr($model, $last_slash + 1); } if ($name == '') @@ -158,33 +162,40 @@ class CI_Loader { } $model = strtolower($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')) + + foreach ($this->_ci_model_paths as $mod_path) { - load_class('Model', FALSE); - } + if ( ! file_exists($mod_path.'models/'.$path.$model.EXT)) + { + continue; + } - require_once(APPPATH.'models/'.$path.$model.EXT); + if ($db_conn !== FALSE AND ! class_exists('CI_DB')) + { + if ($db_conn === TRUE) + $db_conn = ''; - $model = ucfirst($model); - - $CI->$name = new $model(); - $CI->$name->_assign_libraries(); + $CI->load->database($db_conn, FALSE, TRUE); + } + + if ( ! class_exists('Model')) + { + load_class('Model', 'core'); + } + + require_once($mod_path.'models/'.$path.$model.EXT); + + $model = ucfirst($model); + + $CI->$name = new $model(); + $CI->$name->_assign_libraries(); + + $this->_ci_models[] = $name; + return; + } - $this->_ci_models[] = $name; + // couldn't find the model + show_error('Unable to locate the model you have specified: '.$model); } // -------------------------------------------------------------------- @@ -366,21 +377,14 @@ class CI_Loader { * @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', '', $helper)).'_helper'); - + { + foreach ($this->_ci_prep_filename($helpers, '_helper') as $helper) + { if (isset($this->_ci_helpers[$helper])) { continue; } - + $ext_helper = APPPATH.'helpers/'.config_item('subclass_prefix').$helper.EXT; // Is this a helper extension request? @@ -395,25 +399,30 @@ class CI_Loader { include_once($ext_helper); include_once($base_helper); + + $this->_ci_helpers[$helper] = TRUE; + log_message('debug', 'Helper loaded: '.$helper); + continue; } - elseif (file_exists(APPPATH.'helpers/'.$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); + + // Try to load the helper + foreach ($this->_ci_helper_paths as $path) + { + if (file_exists($path.'helpers/'.$helper.EXT)) + { + include_once($path.'helpers/'.$helper.EXT); + + $this->_ci_helpers[$helper] = TRUE; + log_message('debug', 'Helper loaded: '.$helper); + break; } } - $this->_ci_helpers[$helper] = TRUE; - log_message('debug', 'Helper loaded: '.$helper); + // unable to load the helper + if ( ! isset($this->_ci_helpers[$helper])) + { + show_error('Unable to load the requested file: helpers/'.$helper.EXT); + } } } @@ -447,15 +456,8 @@ class CI_Loader { */ function plugin($plugins = array()) { - if ( ! is_array($plugins)) - { - $plugins = array($plugins); - } - - foreach ($plugins as $plugin) + foreach ($this->_ci_prep_filename($plugins, '_pi') as $plugin) { - $plugin = strtolower(str_replace(EXT, '', str_replace('_pi', '', $plugin)).'_pi'); - if (isset($this->_ci_plugins[$plugin])) { continue; @@ -523,19 +525,6 @@ class CI_Loader { $CI->lang->load($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, $return); - } // -------------------------------------------------------------------- @@ -553,36 +542,75 @@ class CI_Loader { } // -------------------------------------------------------------------- - + /** - * Scaffolding Loader + * Add Package Path * - * This initializing function works a bit different than the - * others. It doesn't load the class. Instead, it simply - * sets a flag indicating that scaffolding is allowed to be - * used. The actual scaffolding function below is - * called by the front controller based on whether the - * second segment of the URL matches the "secret" scaffolding - * word stored in the application/config/routes.php + * Prepends a parent path to the library, model, helper, and config path arrays * * @access public * @param string * @return void - */ - function scaffolding($table = '') - { - if ($table === FALSE) + */ + function add_package_path($path) + { + array_unshift($this->_ci_library_paths, $path); + array_unshift($this->_ci_model_paths, $path); + array_unshift($this->_ci_helper_paths, $path); + + // Add config file path + $config =& $this->_ci_get_component('config'); + array_unshift($config->_config_paths, $path); + } + + // -------------------------------------------------------------------- + + /** + * Remove Package Path + * + * Remove a path from the library, model, and helper path arrays if it exists + * If no path is provided, the most recently added path is removed. + * + * @access public + * @param type + * @return type + */ + function remove_package_path($path = '', $remove_config_path = TRUE) + { + $config =& $this->_ci_get_component('config'); + + if ($path == '') { - show_error('You must include the name of the table you would like to access when you initialize scaffolding'); + $void = array_shift($this->_ci_library_paths); + $void = array_shift($this->_ci_model_paths); + $void = array_shift($this->_ci_helper_paths); + $void = array_shift($config->_config_paths); + } + else + { + foreach (array('_ci_library_paths', '_ci_model_paths', '_ci_helper_paths') as $var) + { + if (($key = array_search($path, $this->{$var})) !== FALSE) + { + unset($this->{$var}[$key]); + } + } + + if (($key = array_search($path, $config->_config_paths)) !== FALSE) + { + unset($config->_config_paths[$key]); + } } - $CI =& get_instance(); - $CI->_ci_scaffolding = TRUE; - $CI->_ci_scaff_table = $table; + // 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))); + $config->_config_paths = array_unique(array_merge($config->_config_paths, array(APPPATH))); } // -------------------------------------------------------------------- - + /** * Loader * @@ -733,19 +761,13 @@ class CI_Loader { // Was the path included with the class name? // We look for a slash to determine this $subdir = ''; - if (strpos($class, '/') !== FALSE) + if (($last_slash = strrpos($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]); + // Extract the path + $subdir = substr($class, 0, $last_slash + 1); - // Glue the path back together, sans filename - $subdir = implode($x, '/').'/'; + // 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 @@ -792,12 +814,11 @@ class CI_Loader { } // Lets search for the requested library file and load it. - $is_duplicate = FALSE; - for ($i = 1; $i < 3; $i++) + $is_duplicate = FALSE; + foreach ($this->_ci_library_paths as $path) { - $path = ($i % 2) ? APPPATH : BASEPATH; $filepath = $path.'libraries/'.$subdir.$class.EXT; - + // Does the file exist? No? Bummer... if ( ! file_exists($filepath)) { @@ -826,8 +847,9 @@ class CI_Loader { include_once($filepath); $this->_ci_loaded_files[] = $filepath; - return $this->_ci_init_class($class, '', $params, $object_name); + return $this->_ci_init_class($class, '', $params, $object_name); } + } // END FOREACH // One last attempt. Maybe the library is in a subdirectory, but it wasn't specified? @@ -859,7 +881,7 @@ class CI_Loader { */ function _ci_init_class($class, $prefix = '', $config = FALSE, $object_name = NULL) { - // Is there an associated config file for this class? + // Is there an associated config file for this class? Note: these should always be lowercase if ($config === NULL) { // We test for both uppercase and lowercase, for servers that @@ -971,7 +993,7 @@ class CI_Loader { // A little tweak to remain backward compatible // The $autoload['core'] item was deprecated - if ( ! isset($autoload['libraries'])) + if ( ! isset($autoload['libraries']) AND isset($autoload['core'])) { $autoload['libraries'] = $autoload['core']; } @@ -985,13 +1007,6 @@ class CI_Loader { $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 $item) @@ -1027,20 +1042,10 @@ class CI_Loader { return; } - if ($this->_ci_is_instance()) + foreach($this->_ci_models as $model) { - $CI =& get_instance(); - foreach ($this->_ci_models as $model) - { - $CI->$model->_assign_libraries(); - } - } - else - { - foreach ($this->_ci_models as $model) - { - $this->$model->_assign_libraries(); - } + $model = $this->_ci_get_component($model); + $model->_assign_libraries(); } } @@ -1064,13 +1069,14 @@ class CI_Loader { /** * Determines whether we should use the CI instance or $this - * + * @PHP4 + * * @access private * @return bool */ function _ci_is_instance() { - if ($this->_ci_is_php5 == TRUE) + if (is_php('5.0.0') == TRUE) { return TRUE; } @@ -1078,6 +1084,56 @@ class CI_Loader { global $CI; return (is_object($CI)) ? TRUE : FALSE; } + + // -------------------------------------------------------------------- + + /** + * Get a reference to a specific library or model + * + * @access private + * @return bool + */ + function &_ci_get_component($component) + { + if ($this->_ci_is_instance()) + { + $CI =& get_instance(); + return $CI->$component; + } + else + { + return $this->$component; + } + } + + // -------------------------------------------------------------------- + + /** + * Prep filename + * + * This function preps the name of various items to make loading them more reliable. + * + * @access private + * @param mixed + * @return array + */ + function _ci_prep_filename($filename, $extension) + { + if ( ! is_array($filename)) + { + return array(strtolower(str_replace(EXT, '', str_replace($extension, '', $filename)).$extension)); + } + else + { + foreach ($filename as $key => $val) + { + $filename[$key] = strtolower(str_replace(EXT, '', str_replace($extension, '', $val)).$extension); + } + + return $filename; + } + } + } |