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refactoring the autoloader.

This commit is contained in:
Taylor Otwell 2012-01-23 16:07:08 -06:00
parent 8cfb6d621c
commit 33d62e7753
1 changed files with 29 additions and 23 deletions
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52
laravel/autoloader.php
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@ -9,13 +9,6 @@ class Autoloader {
*/
public static $mappings = array();
/**
* All of the class aliases registered with the auto-loader.
*
* @var array
*/
public static $aliases = array();
/**
* The directories that use the PSR-0 naming convention.
*
@ -30,6 +23,13 @@ class Autoloader {
*/
public static $namespaces = array();
/**
* All of the class aliases registered with the auto-loader.
*
* @var array
*/
public static $aliases = array();
/**
* Load the file corresponding to a given class.
*
@ -56,21 +56,14 @@ class_alias(static::$aliases[$class], $class);
require static::$mappings[$class];
}
// If the class is namespaced to an existing bundle and the bundle has
// not been started, we will start the bundle and attempt to load the
// class file again. If that fails, an error will be thrown by PHP.
//
// This allows bundle classes to be loaded by the auto-loader before
// their class mappings have actually been registered; however, it
// is up to the bundle developer to namespace their classes to
// match the name of their bundle.
elseif (($slash = strpos($class, '\\')) !== false)
{
$namespace = substr($class, 0, $slash);
// If the class namespace is mapped to a directory, we will load
// the class using the PSR-0 standards from that directory by
// passing the directory into the "load_psr" method.
// If the class namespace is mapped to a directory, we will load the class
// using the PSR-0 standards from that directory; however, we will trim
// off the beginning of the namespace to account for files in the root
// of the mapped directory.
if (isset(static::$namespaces[$namespace]))
{
$directory = static::$namespaces[$namespace];
@ -78,9 +71,14 @@ class_alias(static::$aliases[$class], $class);
return static::load_psr(substr($class, $slash + 1), $directory);
}
// It's very important that we make sure the bundle has not been
// started here. If we don't, we'll end up in an infinite loop
// attempting to load a bundle's class.
// If the class is namespaced to an existing bundle and the bundle has
// not been started, we will start the bundle and attempt to load the
// class file again. If that fails, an error will be thrown by PHP.
//
// This allows bundle classes to be loaded by the auto-loader before
// their class mappings have actually been registered; however, it
// is up to the bundle developer to namespace their classes to
// match the name of their bundle.
if (Bundle::exists($namespace) and ! Bundle::started($namespace))
{
Bundle::start($namespace);
@ -89,6 +87,9 @@ class_alias(static::$aliases[$class], $class);
}
}
// If the class is not maped and is not part of a bundle or a mapped
// namespace, we'll make a last ditch effort to load the class via
// the PSR-0 from one of the registered directories.
static::load_psr($class);
}
@ -103,7 +104,8 @@ protected static function load_psr($class, $directory = null)
{
// The PSR-0 standard indicates that class namespace slashes or
// underscores should be used to indicate the directory tree in
// which the class resides.
// which the class resides, so we'll convert the namespace
// slashes to directory slashes.
$file = str_replace(array('\\', '_'), '/', $class);
$directories = (is_nulL($directory)) ? static::$psr : array($directory);
@ -111,6 +113,10 @@ protected static function load_psr($class, $directory = null)
// Once we have formatted the class name, we will simply spin
// through the registered PSR-0 directories and attempt to
// locate and load the class into the script.
//
// We will check for both lowercase and CamelCase files as
// Laravel uses a lowercase version of PSR-0, while true
// PSR-0 uses CamelCase for file names.
foreach ($directories as $directory)
{
if (file_exists($path = $directory.strtolower($file).EXT))
@ -191,7 +197,7 @@ protected static function format($directories)
return array_map(function($directory)
{
return rtrim($directory, DS).DS;
}, (array) $directories);
}