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Revision Autor Zeilennr. Zeile
148 lars 1 
<?php
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/**
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 * Smarty Autoloader
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 *
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 * @package Smarty
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 */
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if (!defined('SMARTY_HELPER_FUNCTIONS_LOADED')) {
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	include __DIR__ . '/functions.php';
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}
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/**
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 * Smarty Autoloader
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 *
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 * @package Smarty
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 * @author  Uwe Tews
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 *             Usage:
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 *                  require_once '...path/Autoloader.php';
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 *                  Smarty_Autoloader::register();
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 *             or
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 *                  include '...path/bootstrap.php';
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 *
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 *                  $smarty = new Smarty();
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 */
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class Smarty_Autoloader
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{
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    /**
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     * Filepath to Smarty root
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     *
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     * @var string
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     */
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    public static $SMARTY_DIR = null;
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    /**
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     * Filepath to Smarty internal plugins
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     *
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     * @var string
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     */
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    public static $SMARTY_SYSPLUGINS_DIR = null;
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    /**
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     * Array with Smarty core classes and their filename
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     *
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     * @var array
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     */
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    public static $rootClasses = array('smarty' => 'Smarty.class.php');
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    /**
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     * Registers Smarty_Autoloader backward compatible to older installations.
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     *
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     * @param bool $prepend Whether to prepend the autoloader or not.
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     */
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    public static function registerBC($prepend = false)
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    {
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        /**
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         * register the class autoloader
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         */
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        if (!defined('SMARTY_SPL_AUTOLOAD')) {
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            define('SMARTY_SPL_AUTOLOAD', 0);
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        }
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        if (SMARTY_SPL_AUTOLOAD
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            && set_include_path(get_include_path() . PATH_SEPARATOR . SMARTY_SYSPLUGINS_DIR) !== false
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        ) {
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            $registeredAutoLoadFunctions = spl_autoload_functions();
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            if (!isset($registeredAutoLoadFunctions[ 'spl_autoload' ])) {
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                spl_autoload_register();
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            }
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        } else {
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            self::register($prepend);
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        }
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    }
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    /**
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     * Registers Smarty_Autoloader as an SPL autoloader.
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     *
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     * @param bool $prepend Whether to prepend the autoloader or not.
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     */
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    public static function register($prepend = false)
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    {
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        self::$SMARTY_DIR = defined('SMARTY_DIR') ? SMARTY_DIR : __DIR__ . DIRECTORY_SEPARATOR;
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        self::$SMARTY_SYSPLUGINS_DIR = defined('SMARTY_SYSPLUGINS_DIR') ? SMARTY_SYSPLUGINS_DIR :
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            self::$SMARTY_DIR . 'sysplugins' . DIRECTORY_SEPARATOR;
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        spl_autoload_register(array(__CLASS__, 'autoload'), true, $prepend);
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    }
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    /**
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     * Handles auto loading of classes.
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     *
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     * @param string $class A class name.
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     */
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    public static function autoload($class)
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    {
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        if ($class[ 0 ] !== 'S' || strpos($class, 'Smarty') !== 0) {
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            return;
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        }
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        $_class = smarty_strtolower_ascii($class);
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        if (isset(self::$rootClasses[ $_class ])) {
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            $file = self::$SMARTY_DIR . self::$rootClasses[ $_class ];
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            if (is_file($file)) {
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                include $file;
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            }
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        } else {
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            $file = self::$SMARTY_SYSPLUGINS_DIR . $_class . '.php';
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            if (is_file($file)) {
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                include $file;
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            }
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        }
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        return;
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    }
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}