Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\ClassLoader;
Chris@0: 
Chris@14: @trigger_error('The '.__NAMESPACE__.'\ClassLoader class is deprecated since Symfony 3.3 and will be removed in 4.0. Use Composer instead.', E_USER_DEPRECATED);
Chris@14: 
Chris@0: /**
Chris@0:  * ClassLoader implements an PSR-0 class loader.
Chris@0:  *
Chris@0:  * See https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.md
Chris@0:  *
Chris@0:  *     $loader = new ClassLoader();
Chris@0:  *
Chris@0:  *     // register classes with namespaces
Chris@0:  *     $loader->addPrefix('Symfony\Component', __DIR__.'/component');
Chris@0:  *     $loader->addPrefix('Symfony',           __DIR__.'/framework');
Chris@0:  *
Chris@0:  *     // activate the autoloader
Chris@0:  *     $loader->register();
Chris@0:  *
Chris@0:  *     // to enable searching the include path (e.g. for PEAR packages)
Chris@0:  *     $loader->setUseIncludePath(true);
Chris@0:  *
Chris@0:  * In this example, if you try to use a class in the Symfony\Component
Chris@0:  * namespace or one of its children (Symfony\Component\Console for instance),
Chris@0:  * the autoloader will first look for the class under the component/
Chris@0:  * directory, and it will then fallback to the framework/ directory if not
Chris@0:  * found before giving up.
Chris@0:  *
Chris@0:  * @author Fabien Potencier <fabien@symfony.com>
Chris@0:  * @author Jordi Boggiano <j.boggiano@seld.be>
Chris@14:  *
Chris@14:  * @deprecated since version 3.3, to be removed in 4.0.
Chris@0:  */
Chris@0: class ClassLoader
Chris@0: {
Chris@17:     private $prefixes = [];
Chris@17:     private $fallbackDirs = [];
Chris@0:     private $useIncludePath = false;
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns prefixes.
Chris@0:      *
Chris@0:      * @return array
Chris@0:      */
Chris@0:     public function getPrefixes()
Chris@0:     {
Chris@0:         return $this->prefixes;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns fallback directories.
Chris@0:      *
Chris@0:      * @return array
Chris@0:      */
Chris@0:     public function getFallbackDirs()
Chris@0:     {
Chris@0:         return $this->fallbackDirs;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Adds prefixes.
Chris@0:      *
Chris@0:      * @param array $prefixes Prefixes to add
Chris@0:      */
Chris@0:     public function addPrefixes(array $prefixes)
Chris@0:     {
Chris@0:         foreach ($prefixes as $prefix => $path) {
Chris@0:             $this->addPrefix($prefix, $path);
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Registers a set of classes.
Chris@0:      *
Chris@0:      * @param string       $prefix The classes prefix
Chris@0:      * @param array|string $paths  The location(s) of the classes
Chris@0:      */
Chris@0:     public function addPrefix($prefix, $paths)
Chris@0:     {
Chris@0:         if (!$prefix) {
Chris@0:             foreach ((array) $paths as $path) {
Chris@0:                 $this->fallbackDirs[] = $path;
Chris@0:             }
Chris@0: 
Chris@0:             return;
Chris@0:         }
Chris@0:         if (isset($this->prefixes[$prefix])) {
Chris@17:             if (\is_array($paths)) {
Chris@0:                 $this->prefixes[$prefix] = array_unique(array_merge(
Chris@0:                     $this->prefixes[$prefix],
Chris@0:                     $paths
Chris@0:                 ));
Chris@17:             } elseif (!\in_array($paths, $this->prefixes[$prefix])) {
Chris@0:                 $this->prefixes[$prefix][] = $paths;
Chris@0:             }
Chris@0:         } else {
Chris@0:             $this->prefixes[$prefix] = array_unique((array) $paths);
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Turns on searching the include for class files.
Chris@0:      *
Chris@0:      * @param bool $useIncludePath
Chris@0:      */
Chris@0:     public function setUseIncludePath($useIncludePath)
Chris@0:     {
Chris@0:         $this->useIncludePath = (bool) $useIncludePath;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Can be used to check if the autoloader uses the include path to check
Chris@0:      * for classes.
Chris@0:      *
Chris@0:      * @return bool
Chris@0:      */
Chris@0:     public function getUseIncludePath()
Chris@0:     {
Chris@0:         return $this->useIncludePath;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Registers this instance as an autoloader.
Chris@0:      *
Chris@0:      * @param bool $prepend Whether to prepend the autoloader or not
Chris@0:      */
Chris@0:     public function register($prepend = false)
Chris@0:     {
Chris@17:         spl_autoload_register([$this, 'loadClass'], true, $prepend);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Unregisters this instance as an autoloader.
Chris@0:      */
Chris@0:     public function unregister()
Chris@0:     {
Chris@17:         spl_autoload_unregister([$this, 'loadClass']);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Loads the given class or interface.
Chris@0:      *
Chris@0:      * @param string $class The name of the class
Chris@0:      *
Chris@0:      * @return bool|null True, if loaded
Chris@0:      */
Chris@0:     public function loadClass($class)
Chris@0:     {
Chris@0:         if ($file = $this->findFile($class)) {
Chris@0:             require $file;
Chris@0: 
Chris@0:             return true;
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Finds the path to the file where the class is defined.
Chris@0:      *
Chris@0:      * @param string $class The name of the class
Chris@0:      *
Chris@0:      * @return string|null The path, if found
Chris@0:      */
Chris@0:     public function findFile($class)
Chris@0:     {
Chris@0:         if (false !== $pos = strrpos($class, '\\')) {
Chris@0:             // namespaced class name
Chris@17:             $classPath = str_replace('\\', \DIRECTORY_SEPARATOR, substr($class, 0, $pos)).\DIRECTORY_SEPARATOR;
Chris@0:             $className = substr($class, $pos + 1);
Chris@0:         } else {
Chris@0:             // PEAR-like class name
Chris@0:             $classPath = null;
Chris@0:             $className = $class;
Chris@0:         }
Chris@0: 
Chris@17:         $classPath .= str_replace('_', \DIRECTORY_SEPARATOR, $className).'.php';
Chris@0: 
Chris@0:         foreach ($this->prefixes as $prefix => $dirs) {
Chris@0:             if ($class === strstr($class, $prefix)) {
Chris@0:                 foreach ($dirs as $dir) {
Chris@17:                     if (file_exists($dir.\DIRECTORY_SEPARATOR.$classPath)) {
Chris@17:                         return $dir.\DIRECTORY_SEPARATOR.$classPath;
Chris@0:                     }
Chris@0:                 }
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         foreach ($this->fallbackDirs as $dir) {
Chris@17:             if (file_exists($dir.\DIRECTORY_SEPARATOR.$classPath)) {
Chris@17:                 return $dir.\DIRECTORY_SEPARATOR.$classPath;
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         if ($this->useIncludePath && $file = stream_resolve_include_path($classPath)) {
Chris@0:             return $file;
Chris@0:         }
Chris@0:     }
Chris@0: }