<?php
 namespace Doctrine\Common; class ClassLoader { private $fileExtension = '.php'; private $namespace; private $includePath; private $namespaceSeparator = '\\'; public function __construct($ns = null, $includePath = null) { $this->namespace = $ns; $this->includePath = $includePath; } public function setNamespaceSeparator($sep) { $this->namespaceSeparator = $sep; } public function getNamespaceSeparator() { return $this->namespaceSeparator; } public function setIncludePath($includePath) { $this->includePath = $includePath; } public function getIncludePath() { return $this->includePath; } public function setFileExtension($fileExtension) { $this->fileExtension = $fileExtension; } public function getFileExtension() { return $this->fileExtension; } public function register() { spl_autoload_register(array($this, 'loadClass')); } public function unregister() { spl_autoload_unregister(array($this, 'loadClass')); } public function loadClass($className) { if ($this->namespace !== null && strpos($className, $this->namespace.$this->namespaceSeparator) !== 0) { return false; } require ($this->includePath !== null ? $this->includePath . DIRECTORY_SEPARATOR : '') . str_replace($this->namespaceSeparator, DIRECTORY_SEPARATOR, $className) . $this->fileExtension; return true; } public function canLoadClass($className) { if ($this->namespace !== null && strpos($className, $this->namespace.$this->namespaceSeparator) !== 0) { return false; } $file = str_replace($this->namespaceSeparator, DIRECTORY_SEPARATOR, $className) . $this->fileExtension; if ($this->includePath !== null) { return file_exists($this->includePath . DIRECTORY_SEPARATOR . $file); } return self::fileExistsInIncludePath($file); } public static function classExists($className) { if (class_exists($className, false)) { return true; } foreach (spl_autoload_functions() as $loader) { if (is_array($loader)) { if (is_object($loader[0])) { if ($loader[0] instanceof ClassLoader) { if ($loader[0]->canLoadClass($className)) { return true; } } else if ($loader[0]->{$loader[1]}($className)) { return true; } } else if ($loader[0]::$loader[1]($className)) { return true; } } else if ($loader instanceof \Closure) { if ($loader($className)) { return true; } } else if (is_string($loader) && $loader($className)) { return true; } } return false; } public static function getClassLoader($className) { foreach (spl_autoload_functions() as $loader) { if (is_array($loader) && $loader[0] instanceof ClassLoader && $loader[0]->canLoadClass($className) ) { return $loader[0]; } } return null; } public static function fileExistsInIncludePath($file) { foreach (explode(PATH_SEPARATOR, get_include_path()) as $dir) { if (file_exists($dir . DIRECTORY_SEPARATOR . $file)) { return true; } } return false; } }