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<?php /* Copyright (c) 2024 Freya Murphy */
/**
* Gives access to imporant
* needed utility functions for
* accessing everything else!
*/
abstract class Component extends Core {
// keep track of what has been loaded
private static array $loaded = array();
// ============================= LOADABLE OBJECTS ==
/**
* Loads a $type of object from a $dir with a given $name
* @param string $name - the name of the object to load
* @param string $dir - the directory theese objects are stored in
* @param string $type - the type of the object
*/
private function load_type($name, $dir, $type): object|NULL
{
$path = $dir . '/' . $name . '.php';
// dont reload an ohject
if (array_key_exists($path, Component::$loaded))
return Component::$loaded[$path];
// only load a object if it exists
if (!file_exists($path))
return NULL;
$parts = explode('/', $name);
$part = end($parts);
$class = ucfirst($part) . '_' . $type;
require($path);
$ref = NULL;
try {
$ref = new ReflectionClass($class);
} catch (Exception $_e) {}
if ($ref === NULL)
return NULL;
$obj = $ref->newInstance();
Component::$loaded[$path] = $obj;
return $obj;
}
/**
* Loads a model
* @param string $name - the name of the model to load
*/
protected function load_model($name): Model|NULL
{
$dir = WEB_ROOT . '/_model';
return $this->load_type($name, $dir, 'model');
}
/**
* Loads a controller
* @param string $name - the name of the controller to load
*/
public function load_controller($name): Controller|NULL
{
$dir = WEB_ROOT . '/_controller';
return $this->load_type($name, $dir, 'controller');
}
// ========================================= LANG ==
/**
* Loads a php lang file into the lang array
*/
private static function load_lang_file(string $file): void
{
$lang = $GLOBALS['__lang'];
require($file);
$GLOBALS['__lang'] = $lang;
}
/**
* Loads each php file lang strings in a directory
*/
private static function load_lang_dir(string $dir): void
{
if ($handle = opendir($dir)) {
while (false !== ($entry = readdir($handle))) {
if ($entry === '.' || $entry === '..')
continue;
Component::load_lang_file($entry);
}
}
}
/**
* Loads the given common lang
*/
protected static function load_lang(string ...$langs): void
{
$root = WEB_ROOT . '/lang';
foreach ($langs as $lang) {
$file = "{$root}/{$lang}.php";
$dir = "{$root}/{$lang}";
if (file_exists($file))
Component::load_lang_file($file);
else if (is_dir($dir))
Component::load_lang_dir($dir);
}
}
}
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