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<?php
/*
PHPRtfLite
Copyright 2010 Steffen Zeidler <sigma_z@web.de>
This file is part of PHPRtfLite.
PHPRtfLite is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
PHPRtfLite is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PHPRtfLite. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Class for autoloading PHPRtfLite classes.
* @version 1.0.1
* @author Steffen Zeidler <sigma_z@web.de>
* @copyright 2010 Steffen Zeidler
* @package PHPRtfLite
*/
class PHPRtfLite_Autoloader
{
/**
* base dir of the PHPRtfLite package
* @var string
*/
protected static $_baseDir;
/**
* Sets the base dir, where PHPRtfLite classes can be found
* @param string $dir
*/
public static function setBaseDir($dir) {
self::$_baseDir = $dir;
}
/**
* loads PHPRtfLite class
*
* @param string $className
* @return boolean returns true, if class could be loaded
*/
public static function autoload($className) {
// validate classname
if (!preg_match('/^[a-zA-Z_][a-zA-Z0-9_]*$/m', $className)) {
throw new Exception("Class name '$className' is invalid");
}
$classFile = self::$_baseDir . '/' . str_replace('_', '/', $className) . '.php';
// check if file exists
if (!file_exists($classFile)) {
throw new Exception("File $classFile does not exist!");
}
require $classFile;
if (!class_exists($className)) {
throw new Exception("Class $className could not be found!");
}
}
}
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