77 lines
1.5 KiB
PHP
77 lines
1.5 KiB
PHP
<?php
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/**
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* Autoloader
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*
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* @package Less
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* @subpackage autoload
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*/
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class Less_Autoloader {
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/**
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* Registered flag
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*
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* @var boolean
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*/
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protected static $registered = false;
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/**
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* Library directory
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*
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* @var string
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*/
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protected static $libDir;
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/**
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* Register the autoloader in the spl autoloader
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*
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* @return void
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* @throws Exception If there was an error in registration
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*/
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public static function register() {
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if ( self::$registered ) {
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return;
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}
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self::$libDir = dirname( __FILE__ );
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if ( false === spl_autoload_register( array( 'Less_Autoloader', 'loadClass' ) ) ) {
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throw new Exception( 'Unable to register Less_Autoloader::loadClass as an autoloading method.' );
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}
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self::$registered = true;
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}
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/**
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* Unregisters the autoloader
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*
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* @return void
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*/
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public static function unregister() {
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spl_autoload_unregister( array( 'Less_Autoloader', 'loadClass' ) );
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self::$registered = false;
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}
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/**
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* Loads the class
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*
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* @param string $className The class to load
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*/
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public static function loadClass( $className ) {
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// handle only package classes
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if ( strpos( $className, 'Less_' ) !== 0 ) {
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return;
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}
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$className = substr( $className, 5 );
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$fileName = self::$libDir . DIRECTORY_SEPARATOR . str_replace( '_', DIRECTORY_SEPARATOR, $className ) . '.php';
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if ( file_exists( $fileName ) ) {
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require $fileName;
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return true;
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} else {
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throw new Exception( 'file not loadable '.$fileName );
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}
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}
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}
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