167 lines
5 KiB
PHP
167 lines
5 KiB
PHP
<?php
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/**
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* SplClassLoader implementation that implements the technical interoperability
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* standards for PHP 5.3 namespaces and class names.
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*
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* https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.md
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* https://github.com/keradus/SplClassLoader
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*
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* Example which loads classes for the Doctrine Common package in the
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* Doctrine\Common namespace.
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* $classLoader = new SplClassLoader('Doctrine\Common', '/path/to/doctrine');
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* $classLoader->register();
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*
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* @author Jonathan H. Wage <jonwage@gmail.com>
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* @author Roman S. Borschel <roman@code-factory.org>
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* @author Matthew Weier O'Phinney <matthew@zend.com>
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* @author Kris Wallsmith <kris.wallsmith@gmail.com>
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* @author Fabien Potencier <fabien.potencier@symfony-project.org>
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* @author Dariusz Ruminski <dariusz.ruminski@gmail.com>
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*/
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class SplClassLoader
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{
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private $_fileExtension = '.class.php';
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private $_namespace;
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private $_includePath;
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private $_namespaceSeparator = '\\';
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public $debug = false;
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/**
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* Creates a new <tt>SplClassLoader</tt> that loads classes of the
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* specified namespace.
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*
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* @param string $ns The namespace to use.
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* @param string $includePath The include path for all class files in the namespace.
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*/
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public function __construct($ns = null, $includePath = null)
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{
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$this->_namespace = $ns;
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$this->_includePath = $includePath;
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}
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/**
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* Sets the namespace separator used by classes in the namespace of this class loader.
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*
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* @param string $sep The separator to use.
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*/
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public function setNamespaceSeparator($sep)
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{
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$this->_namespaceSeparator = $sep;
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}
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/**
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* Gets the namespace separator used by classes in the namespace of this class loader.
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*
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* @return string $_namespaceSeparator
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*/
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public function getNamespaceSeparator()
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{
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return $this->_namespaceSeparator;
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}
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/**
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* Sets the base include path for all class files in the namespace of this class loader.
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*
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* @param string $includePath
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*/
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public function setIncludePath($includePath)
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{
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$this->_includePath = $includePath;
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}
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/**
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* Gets the base include path for all class files in the namespace of this class loader.
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*
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* @return string $includePath
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*/
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public function getIncludePath()
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{
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return $this->_includePath;
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}
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/**
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* Sets the file extension of class files in the namespace of this class loader.
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*
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* @param string $fileExtension
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*/
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public function setFileExtension($fileExtension)
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{
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$this->_fileExtension = $fileExtension;
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}
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/**
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* Gets the file extension of class files in the namespace of this class loader.
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*
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* @return string $fileExtension
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*/
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public function getFileExtension()
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{
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return $this->_fileExtension;
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}
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/**
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* Installs this class loader on the SPL autoload stack.
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*/
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public function register()
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{
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spl_autoload_register(array($this, 'loadClass'));
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}
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/**
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* Uninstalls this class loader from the SPL autoloader stack.
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*/
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public function unregister()
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{
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spl_autoload_unregister(array($this, 'loadClass'));
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}
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/**
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* Loads the given class or interface.
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*
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* @param string $className The name of the class to load.
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* @return bool whether the loading was successful
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*/
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public function loadClass($className)
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{
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if ($this->debug) {
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var_dump("loadClass ($this->_namespace) $className");
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}
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if ($className[0] === "\\") {
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$className = substr ($className, 1);
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}
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if (null === $this->_namespace || $this->_namespace.$this->_namespaceSeparator === substr($className, 0, strlen($this->_namespace.$this->_namespaceSeparator))) {
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$fileName = '';
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$namespace = '';
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if (false !== ($lastNsPos = strripos($className, $this->_namespaceSeparator))) {
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$namespace = substr($className, 0, $lastNsPos);
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$className = substr($className, $lastNsPos + 1);
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$fileName = str_replace($this->_namespaceSeparator, DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
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}
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$fileName .= str_replace('_', DIRECTORY_SEPARATOR, $className) . $this->_fileExtension;
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$filePathName = ($this->_includePath !== null ? $this->_includePath . DIRECTORY_SEPARATOR : '') . $fileName;
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if ($this->debug) {
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var_dump("loading ($this->_namespace) $filePathName ...");
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}
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if (file_exists($filePathName)) {
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include $filePathName;
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$loaded = true;
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} else {
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$loaded = false;
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}
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if ($this->debug) {
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var_dump("loading ($this->_namespace) $filePathName " . ($loaded ? "OK" : "ERR"));
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}
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return $loaded;
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}
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return false;
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}
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}
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