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-rw-r--r--system/core/Loader.php174
1 files changed, 103 insertions, 71 deletions
diff --git a/system/core/Loader.php b/system/core/Loader.php
index cce1b1277..99773c3a2 100644
--- a/system/core/Loader.php
+++ b/system/core/Loader.php
@@ -215,7 +215,7 @@ class CI_Loader {
$params = NULL;
}
- $this->_ci_load_class($library, $params, $object_name);
+ $this->_ci_load_library($library, $params, $object_name);
return $this;
}
@@ -949,17 +949,17 @@ class CI_Loader {
// --------------------------------------------------------------------
/**
- * Internal CI Class Loader
+ * Internal CI Library Loader
*
* @used-by CI_Loader::library()
- * @uses CI_Loader::_ci_init_class()
+ * @uses CI_Loader::_ci_init_library()
*
* @param string $class Class name to load
* @param mixed $params Optional parameters to pass to the class constructor
* @param string $object_name Optional object name to assign to
* @return void
*/
- protected function _ci_load_class($class, $params = NULL, $object_name = NULL)
+ protected function _ci_load_library($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,
@@ -982,47 +982,22 @@ class CI_Loader {
}
$class = ucfirst($class);
- $subclass = APPPATH.'libraries/'.$subdir.config_item('subclass_prefix').$class.'.php';
- // Is this a class extension request?
- if (file_exists($subclass))
+ // Is this a stock library? There are a few special conditions if so ...
+ if (file_exists(BASEPATH.'libraries/'.$subdir.$class.'.php'))
{
- $baseclass = BASEPATH.'libraries/'.$subdir.$class.'.php';
-
- if ( ! file_exists($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 (class_exists(config_item('subclass_prefix').$class, FALSE))
- {
- // Before we deem this to be a duplicate request, let's see
- // if a custom object name is being supplied. If so, we'll
- // return a new instance of the object
- if ($object_name !== NULL)
- {
- $CI =& get_instance();
- if ( ! isset($CI->$object_name))
- {
- return $this->_ci_init_class($class, config_item('subclass_prefix'), $params, $object_name);
- }
- }
-
- log_message('debug', $class.' class already loaded. Second attempt ignored.');
- return;
- }
-
- include_once($baseclass);
- include_once($subclass);
-
- return $this->_ci_init_class($class, config_item('subclass_prefix'), $params, $object_name);
+ return $this->_ci_load_stock_library($class, $subdir, $params, $object_name);
}
// Let's search for the requested library file and load it.
foreach ($this->_ci_library_paths as $path)
{
+ // BASEPATH has already been checked for
+ if ($path === BASEPATH)
+ {
+ continue;
+ }
+
$filepath = $path.'libraries/'.$subdir.$class.'.php';
// Safety: Was the class already loaded by a previous call?
@@ -1036,7 +1011,7 @@ class CI_Loader {
$CI =& get_instance();
if ( ! isset($CI->$object_name))
{
- return $this->_ci_init_class($class, '', $params, $object_name);
+ return $this->_ci_init_library($class, '', $params, $object_name);
}
}
@@ -1050,13 +1025,13 @@ class CI_Loader {
}
include_once($filepath);
- return $this->_ci_init_class($class, '', $params, $object_name);
+ return $this->_ci_init_library($class, '', $params, $object_name);
}
// One last attempt. Maybe the library is in a subdirectory, but it wasn't specified?
if ($subdir === '')
{
- return $this->_ci_load_class($class.'/'.$class, $params, $object_name);
+ return $this->_ci_load_library($class.'/'.$class, $params, $object_name);
}
// If we got this far we were unable to find the requested class.
@@ -1067,9 +1042,84 @@ class CI_Loader {
// --------------------------------------------------------------------
/**
- * Internal CI Class Instantiator
+ * Internal CI Stock Library Loader
+ *
+ * @used-by CI_Loader::_ci_load_library()
+ * @uses CI_Loader::_ci_init_library()
+ *
+ * @param string $library Library name to load
+ * @param string $file_path Path to the library filename, relative to libraries/
+ * @param mixed $params Optional parameters to pass to the class constructor
+ * @param string $object_name Optional object name to assign to
+ * @return void
+ */
+ protected function _ci_load_stock_library($library_name, $file_path, $params, $object_name)
+ {
+ $prefix = 'CI_';
+
+ if (class_exists($prefix.$library_name, FALSE))
+ {
+ if (class_exists(config_item('subclass_prefix').$library_name, FALSE))
+ {
+ $prefix = config_item('subclass_prefix');
+ }
+
+ // Before we deem this to be a duplicate request, let's see
+ // if a custom object name is being supplied. If so, we'll
+ // return a new instance of the object
+ if ($object_name !== NULL)
+ {
+ $CI =& get_instance();
+ if ( ! isset($CI->$object_name))
+ {
+ return $this->_ci_init_library($library_name, $prefix, $params, $object_name);
+ }
+ }
+
+ log_message('debug', $library_name.' class already loaded. Second attempt ignored.');
+ return;
+ }
+ elseif (file_exists(APPPATH.'libraries/'.$file_path.$library_name.'.php'))
+ {
+ // Override
+ include_once(APPPATH.'libraries/'.$file_path.$library_name.'.php');
+ if (class_exists($prefix.$library_name, FALSE))
+ {
+ return $this->_ci_init_library($library_name, $prefix, $params, $object_name);
+ }
+ else
+ {
+ log_message('debug', APPPATH.'libraries/'.$file_path.$library_name.'.php exists, but does not declare '.$prefix.$library_name);
+ }
+ }
+
+ include_once(BASEPATH.'libraries/'.$file_path.$library_name.'.php');
+
+ // Check for extensions
+ $subclass = config_item('subclass_prefix').$library_name;
+ if (file_exists(APPPATH.'libraries/'.$file_path.$subclass.'.php'))
+ {
+ include_once(APPPATH.'libraries/'.$file_path.$subclass.'.php');
+ if (class_exists($subclass, FALSE))
+ {
+ $prefix = config_item('subclass_prefix');
+ }
+ else
+ {
+ log_message('debug', APPPATH.'libraries/'.$file_path.$subclass.'.php exists, but does not declare '.$subclass);
+ }
+ }
+
+ return $this->_ci_init_library($library_name, $prefix, $params, $object_name);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Internal CI Library Instantiator
*
- * @used-by CI_Loader::_ci_load_class()
+ * @used-by CI_Loader::_ci_load_stock_library()
+ * @used-by CI_Loader::_ci_load_library()
*
* @param string $class Class name
* @param string $prefix Class name prefix
@@ -1080,7 +1130,7 @@ class CI_Loader {
* @param string $object_name Optional object name to assign to
* @return void
*/
- protected function _ci_init_class($class, $prefix = '', $config = FALSE, $object_name = NULL)
+ protected function _ci_init_library($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)
@@ -1128,31 +1178,13 @@ class CI_Loader {
}
}
- if ($prefix === '')
- {
- if (class_exists('CI_'.$class, FALSE))
- {
- $name = 'CI_'.$class;
- }
- elseif (class_exists(config_item('subclass_prefix').$class, FALSE))
- {
- $name = config_item('subclass_prefix').$class;
- }
- else
- {
- $name = $class;
- }
- }
- else
- {
- $name = $prefix.$class;
- }
+ $class_name = $prefix.$class;
// Is the class name valid?
- if ( ! class_exists($name, FALSE))
+ if ( ! class_exists($class_name, FALSE))
{
- log_message('error', 'Non-existent class: '.$name);
- show_error('Non-existent class: '.$name);
+ log_message('error', 'Non-existent class: '.$class_name);
+ show_error('Non-existent class: '.$class_name);
}
// Set the variable name we will assign the class to
@@ -1170,13 +1202,13 @@ class CI_Loader {
$CI =& get_instance();
if (isset($CI->$object_name))
{
- if ($CI->$object_name instanceof $name)
+ if ($CI->$object_name instanceof $class_name)
{
- log_message('debug', $class." has already been instantiated as '".$object_name."'. Second attempt aborted.");
+ log_message('debug', $class_name." has already been instantiated as '".$object_name."'. Second attempt aborted.");
return;
}
- show_error("Resource '".$object_name."' already exists and is not a ".$class." instance.");
+ show_error("Resource '".$object_name."' already exists and is not a ".$class_name." instance.");
}
// Save the class name and object name
@@ -1184,8 +1216,8 @@ class CI_Loader {
// Instantiate the class
$CI->$object_name = isset($config)
- ? new $name($config)
- : new $name();
+ ? new $class_name($config)
+ : new $class_name();
}
// --------------------------------------------------------------------