/**
* Instantiates a class
*
* @access private
* @param string
* @param string
* @return null
*/
function _ci_init_class($class, $prefix = '', $config = FALSE)
{
$class = strtolower($class);
// Is there an associated config file for this class?
// {{{ Matchbox
$module = $this->_matchbox->argument(3);
if ($config === null) {
if ($filepath = $this->_matchbox->find('config/' . $class . EXT, $module)) {
include $filepath;
}
}
// }}}
if ($prefix == '') {
$name = class_exists('CI_' . $class) ? 'CI_' . $class : $class;
} else {
$name = $prefix . $class;
}
// Set the variable name we will assign the class to
$classvar = !isset($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 $name();
}
}
/**
* Load class
*
* This function loads the requested class.
*
* @access private
* @param string the item that is being loaded
* @param mixed any additional parameters
* @return void
*/
function _ci_load_class($class, $params = NULL)
{
// Get the class name, 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) {
// {{{ Matchbox
$module = $this->_matchbox->argument(2);
if ($subclass = $this->_matchbox->find('libraries/' . $subdir . config_item('subclass_prefix') . $class . EXT, $module)) {
$baseclass = $this->_matchbox->find('libraries/' . $class . EXT, $module, 2);
// }}}
if (!file_exists($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;
// {{{ Matchbox
return $this->_ci_init_class($class, config_item('subclass_prefix'), $params, $module);
// }}}
}
// Lets search for the requested library file and load it.
$is_duplicate = FALSE;
// {{{ Matchbox
if ($filepath = $this->_matchbox->find('libraries/' . $subdir . $class . EXT, $module, 2)) {
if (in_array($class, $this->_ci_classes)) {
$is_duplicate = true;
log_message('debug', $class . ' class already loaded. Second attempt ignored.');
return;
}
include $filepath;
$this->_ci_classes[] = $class;
return $this->_ci_init_class($class, '', $params, $module);
}
// }}}
}
// END FOREACH
// One last attempt. Maybe the library is in a subdirectory, but it wasn't specified?
if ($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);
}
}
