m1k1oblog/app/splclassloader.class.php

<?php
defined('PROJECT_PATH') OR exit('No direct script access allowed');

/**
 * SplClassLoader implementation that implements the technical interoperability
 * standards for PHP 5.3 namespaces and class names.
 *
 *     // Example which loads classes for the Doctrine Common package in the
 *     // Doctrine\Common namespace.
 *     $classLoader = new SplClassLoader('Doctrine\Common', '/path/to/doctrine');
 *     $classLoader->register();
 *
 * @author Jonathan H. Wage <jonwage@gmail.com>
 * @author Roman S. Borschel <roman@code-factory.org>
 * @author Matthew Weier O'Phinney <matthew@zend.com>
 * @author Kris Wallsmith <kris.wallsmith@gmail.com>
 * @author Fabien Potencier <fabien.potencier@symfony-project.org>
 */

class SplClassLoader
{
	private $_fileExtension = '.php';
	private $_namespace;
	private $_includePath;
	private $_namespaceSeparator = '\\';
	private $_excludeNs;

	/**
	 * Creates a new <tt>SplClassLoader</tt> that loads classes of the
	 * specified namespace.
	 * 
	 * @param string $ns The namespace to use.
	 */
	public function __construct($ns = null, $includePath = null) {
		$this->_namespace = $ns;
		$this->_includePath = $includePath;
	}

	/**
	 * Sets the namespace separator used by classes in the namespace of this class loader.
	 * 
	 * @param string $sep The separator to use.
	 */
	public function setNamespaceSeparator($sep) {
		$this->_namespaceSeparator = $sep;
	}

	public function setExcludeNs($exclude) {
		$this->_excludeNs = $exclude;
	}

	/**
	 * Gets the namespace seperator used by classes in the namespace of this class loader.
	 *
	 * @return string
	 */
	public function getNamespaceSeparator() {
		return $this->_namespaceSeparator;
	}

	/**
	 * Sets the base include path for all class files in the namespace of this class loader.
	 * 
	 * @param string $includePath
	 */
	public function setIncludePath($includePath) {
		$this->_includePath = $includePath;
	}

	/**
	 * Gets the base include path for all class files in the namespace of this class loader.
	 *
	 * @return string $includePath
	 */
	public function getIncludePath() {
		return $this->_includePath;
	}

	/**
	 * Sets the file extension of class files in the namespace of this class loader.
	 * 
	 * @param string $fileExtension
	 */
	public function setFileExtension($fileExtension) {
		$this->_fileExtension = $fileExtension;
	}

	/**
	 * Gets the file extension of class files in the namespace of this class loader.
	 *
	 * @return string $fileExtension
	 */
	public function getFileExtension() {
		return $this->_fileExtension;
	}

	/**
	 * Installs this class loader on the SPL autoload stack.
	 */
	public function register() {
		spl_autoload_register(array($this, 'loadClass'));
	}

	/**
	 * Uninstalls this class loader from the SPL autoloader stack.
	 */
	public function unregister() {
		spl_autoload_unregister(array($this, 'loadClass'));
	}

	/**
	 * Loads the given class or interface.
	 *
	 * @param string $className The name of the class to load.
	 * @return void
	 */
	public function loadClass($className) {
		if (!empty($this->_excludeNs)) {
			$className = str_replace($this->_excludeNs, '', $className);
		}

		if (null === $this->_namespace || $this->_namespace.$this->_namespaceSeparator === substr($className, 0, strlen($this->_namespace.$this->_namespaceSeparator))) {
			$fileName = '';
			$namespace = '';

			if (false !== ($lastNsPos = strripos($className, $this->_namespaceSeparator))) {
				$namespace = substr($className, 0, $lastNsPos);
				$className = substr($className, $lastNsPos + 1);
				$fileName = str_replace($this->_namespaceSeparator, DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
			}

			$fileName .= str_replace('_', DIRECTORY_SEPARATOR, $className) . $this->_fileExtension;

			$fileName = strtolower($fileName);

			$full = ($this->_includePath !== null ? $this->_includePath . DIRECTORY_SEPARATOR : '') . $fileName;

			if (!file_exists($full)) {
				throw new Exception(sprintf('Class file for "%s" not found.', $className));
			}

			require $full;
		}
	}
}