[Sommaire] [Imprimer]

   1  <?php
   2  /**
   3  * Autoload Extension
   4  *
   5  * Note: shell wrapper has to create the __autoload() function when
   6  *       isAutoloadEnabled() is true
   7  *
   8  * handles the options to enable the internal autoload support
   9  *
  10  * :set al
  11  * :set autoload
  12  *
  13  * autoload can't be disabled
  14  */
  15      
  16  class PHP_Shell_Extensions_Autoload implements PHP_Shell_Extension {
  17      /**
  18      * does the use want to use the internal autoload ? 
  19      *
  20      * @var bool
  21      */
  22      protected $autoload = false;
  23  
  24      public function register() {
  25          $opt = PHP_Shell_Options::getInstance();
  26  
  27          $opt->registerOption("autoload", $this, "optSetAutoload");
  28          $opt->registerOptionAlias("al", "autoload");
  29      }
  30  
  31      /**
  32      * sets the autoload-flag
  33      *
  34      * - the $value is ignored and doesn't have to be set
  35      * - if __autoload() is defined, the set fails
  36      */
  37      public function optSetAutoload($key, $value) {
  38          if ($this->autoload) {
  39              print('autload is already enabled');
  40              return;
  41          }
  42  
  43          if (function_exists('__autoload')) {
  44              print('can\'t enabled autoload as a external __autoload() function is already defined');
  45              return;
  46          }
  47  
  48          $this->autoload = true;
  49      }
  50  
  51      /**
  52      * is the autoload-flag set ?
  53      *
  54      * @return bool true if __autoload() should be set by the external wrapper
  55      */
  56      public function isAutoloadEnabled() {
  57          return $this->autoload;
  58      }
  59  }
  60