MIF_E31222691/laravel/loader.php

150 lines
3.2 KiB
PHP

<?php namespace Laravel;
class Loader {
/**
* The paths to be searched by the loader.
*
* @var array
*/
public static $paths = array(BASE_PATH);
/**
* All of the class aliases.
*
* @var array
*/
public static $aliases = array();
/**
* All of the active modules.
*
* @var array
*/
public static $modules = array();
/**
* Bootstrap the auto-loader.
*
* @param array $paths
* @return void
*/
public static function bootstrap($paths = array())
{
static::$aliases = Config::get('aliases');
foreach ($paths as $path) { static::register_path($path); }
}
/**
* Load a class file for a given class name.
*
* This function is registered on the SPL auto-loader stack by the front controller during each request.
* All Laravel class names follow a namespace to directory convention.
*
* @param string $class
* @return void
*/
public static function load($class)
{
$file = strtolower(str_replace('\\', '/', $class));
if (array_key_exists($class, static::$aliases)) return class_alias(static::$aliases[$class], $class);
(static::load_from_registered($file)) or static::load_from_module($file);
}
/**
* Load a class that is stored in the registered directories.
*
* @param string $file
* @return bool
*/
private static function load_from_registered($file)
{
foreach (static::$paths as $directory)
{
if (file_exists($path = $directory.$file.EXT))
{
require $path;
return true;
}
}
return false;
}
/**
* Search the active modules for a given file.
*
* @param string $file
* @return void
*/
private static function load_from_module($file)
{
if (is_null($module = static::module_path($file))) return;
// Slice the module name off of the filename. Even though module libraries
// and models are namespaced under the module, there will obviously not be
// a folder matching that namespace in the libraries or models directory.
$file = substr($file, strlen($module));
foreach (array(MODULE_PATH.$module.'/models', MODULE_PATH.$module.'/libraries') as $directory)
{
if (file_exists($path = $directory.'/'.$file.EXT)) return require $path;
}
}
/**
* Search the module paths for a match on the file.
*
* The file namespace should correspond to a directory within the module directory.
*
* @param string $file
* @return string
*/
private static function module_path($file)
{
foreach (Module::$modules as $key => $module)
{
if (strpos($file, $module) === 0) return $module;
}
}
/**
* Register a path with the auto-loader.
*
* After registering the path, it will be checked similarly to the models and libraries directories.
*
* @param string $path
* @return void
*/
public static function register_path($path)
{
static::$paths[] = rtrim($path, '/').'/';
}
/**
* Register an alias with the auto-loader.
*
* @param array $alias
* @return void
*/
public static function register_alias($alias)
{
static::$aliases = array_merge(static::$aliases, $alias);
}
/**
* Remove an alias from the auto-loader's list of aliases.
*
* @param string $alias
* @return void
*/
public static function forget_alias($alias)
{
unset(static::$aliases[$alias]);
}
}