<?php
/** DomFramework
    @package domframework
    @author Dominique Fournier <dominique@fournier38.fr> */

require_once ("output.php");
/** Display in JSOn the data provided */
class outputjson extends output
{
  /** Don't allow to output in JSON if the functions are not available in PHP */
  function __construct ()
  {
    if (!function_exists ("json_encode"))
      throw new Exception ("JSON support not available in PHP ! apt-get ".
                           "install php5-json", 500);
  }

  /** Display in JSOn the data provided
      @param mixed $data The data to be displayed */
  public function out ($data)
  {
    @header("Cache-Control: no-store, no-cache, must-revalidate");
    @header("Expires: Sat, 26 Jul 1997 05:00:00 GMT");
    @header('Last-Modified: '.gmdate ('D, d M Y H:i:s').' GMT');
    @header('Cache-Control: post-check=0, pre-check=0', false);
    @header('Pragma: no-cache');
    @header ("Content-Type: application/json");
    echo json_encode ($data);
    if (!defined ("PHPUNIT"))
      exit;
  }
}