Subversion-Projekte lars-tiefland.prado

<?php

/**

* Autoload Extension

*

* Note: shell wrapper has to create the __autoload() function when

*       isAutoloadEnabled() is true

*

* handles the options to enable the internal autoload support

*

* :set al

* :set autoload

*

* autoload can't be disabled

*/

class PHP_Shell_Extensions_Autoload implements PHP_Shell_Extension {

    /**

    * does the use want to use the internal autoload ?

    *

    * @var bool

    */

    protected $autoload = false;

    public function register() {

        $opt = PHP_Shell_Options::getInstance();

        $opt->registerOption("autoload", $this, "optSetAutoload");

        $opt->registerOptionAlias("al", "autoload");

    }

    /**

    * sets the autoload-flag

    *

    * - the $value is ignored and doesn't have to be set

    * - if __autoload() is defined, the set fails

    */

    public function optSetAutoload($key, $value) {

        if ($this->autoload) {

            print('autload is already enabled');

            return;

        }

        if (function_exists('__autoload')) {

            print('can\'t enabled autoload as a external __autoload() function is already defined');

            return;

        }

        $this->autoload = true;

    }

    /**

    * is the autoload-flag set ?

    *

    * @return bool true if __autoload() should be set by the external wrapper

    */

    public function isAutoloadEnabled() {

        return $this->autoload;

    }

}