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[Foundation] updated the autoloader, added a new one
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<?php | ||
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namespace Symfony\Foundation; | ||
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/* | ||
* This file is part of the symfony package. | ||
* | ||
* (c) Fabien Potencier <fabien.potencier@symfony-project.com> | ||
* | ||
* For the full copyright and license information, please view the LICENSE | ||
* file that was distributed with this source code. | ||
*/ | ||
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/** | ||
* UniversalClassLoader implements a "universal" autoloder for PHP 5.3. | ||
* | ||
* It is able to load classes that use either: | ||
* | ||
* * The technical interoperability standards for PHP 5.3 namespaces and | ||
* class names (http://groups.google.com/group/php-standards/web/final-proposal); | ||
* | ||
* * The PEAR naming convention for classes (http://pear.php.net/). | ||
* | ||
* Classes from a sub-namespace or a sub-hierarchy of PEAR classes can be | ||
* looked for in a list of locations to ease the vendoring of a sub-set of | ||
* classes for large projects. | ||
* | ||
* Example usage: | ||
* | ||
* $loader = new ClassLoader(); | ||
* | ||
* // register classes with namespaces | ||
* $loader->registerNamespaces(array( | ||
* 'Symfony\Components' => __DIR__.'/components', | ||
* 'Symfony' => __DIR__.'/framework', | ||
* )); | ||
* | ||
* // register a library using the PEAR naming convention | ||
* $loader->registerClasses(array( | ||
* 'Swift_' => __DIR__.'/Swift', | ||
* )); | ||
* | ||
* // activate the autoloader | ||
* $loader->register(); | ||
* | ||
* In this example, if you try to use a class in the Symfony\Components | ||
* namespace or one of its children (Symfony\Components\Console for instance), | ||
* the autoloader will first look for the class under the components/ | ||
* directory, and it will then fallback to the framework/ directory if not | ||
* found before giving up. | ||
* | ||
* @package symfony | ||
* @subpackage foundation | ||
* @author Fabien Potencier <fabien.potencier@symfony-project.org> | ||
*/ | ||
class UniversalClassLoader | ||
{ | ||
protected $namespaces = array(); | ||
protected $prefixes = array(); | ||
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/** | ||
* Registers an array of namespaces | ||
* | ||
* @param array $namespaces An array of namespaces (namespaces as keys and locations as values) | ||
*/ | ||
public function registerNamespaces(array $namespaces) | ||
{ | ||
$this->namespaces = array_merge($this->namespaces, $namespaces); | ||
} | ||
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/** | ||
* Registers a namespace. | ||
* | ||
* @param string $namespace The namespace | ||
* @param string $path The location of the namespace | ||
*/ | ||
public function registerNamespace($namespace, $path) | ||
{ | ||
$this->namespaces[$namespace] = $path; | ||
} | ||
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/** | ||
* Registers an array of classes using the PEAR naming convention. | ||
* | ||
* @param array $classes An array of classes (prefixes as keys and locations as values) | ||
*/ | ||
public function registerPrefixes(array $classes) | ||
{ | ||
$this->prefixes = array_merge($this->prefixes, $classes); | ||
} | ||
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/** | ||
* Registers a set of classes using the PEAR naming convention. | ||
* | ||
* @param string $prefix The classes prefix | ||
* @param string $path The location of the classes | ||
*/ | ||
public function registerPrefix($prefix, $path) | ||
{ | ||
$this->prefixes[$prefix] = $path; | ||
} | ||
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/** | ||
* Registers this instance as an autoloader. | ||
*/ | ||
public function register() | ||
{ | ||
spl_autoload_register(array($this, 'loadClass')); | ||
} | ||
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/** | ||
* Loads the given class or interface. | ||
* | ||
* @param string $class The name of the class | ||
*/ | ||
public function loadClass($class) | ||
{ | ||
if (false !== ($pos = strripos($class, '\\'))) | ||
{ | ||
// namespaced class name | ||
$namespace = substr($class, 0, $pos); | ||
foreach ($this->namespaces as $ns => $dir) | ||
{ | ||
if (0 === strpos($namespace, $ns)) | ||
{ | ||
$class = substr($class, $pos + 1); | ||
require $dir.DIRECTORY_SEPARATOR.str_replace('\\', DIRECTORY_SEPARATOR, $namespace).DIRECTORY_SEPARATOR.str_replace('_', DIRECTORY_SEPARATOR, $class).'.php'; | ||
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return; | ||
} | ||
} | ||
} | ||
else | ||
{ | ||
// PEAR-like class name | ||
foreach ($this->prefixes as $prefix => $dir) | ||
{ | ||
if (0 === strpos($class, $prefix)) | ||
{ | ||
require $dir.DIRECTORY_SEPARATOR.str_replace('_', DIRECTORY_SEPARATOR, $class).'.php'; | ||
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return; | ||
} | ||
} | ||
} | ||
} | ||
} |