source: trunk/include/ws_protocols/json_encoder.php @ 3282

<?php
// +-----------------------------------------------------------------------+
// | Piwigo - a PHP based picture gallery                                  |
// +-----------------------------------------------------------------------+
// | Copyright(C) 2008-2009 Piwigo Team                  http://piwigo.org |
// | Copyright(C) 2003-2008 PhpWebGallery Team    http://phpwebgallery.net |
// | Copyright(C) 2002-2003 Pierrick LE GALL   http://le-gall.net/pierrick |
// +-----------------------------------------------------------------------+
// | This program is free software; you can redistribute it and/or modify  |
// | it under the terms of the GNU General Public License as published by  |
// | the Free Software Foundation                                          |
// |                                                                       |
// | This program 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      |
// | General Public License for more details.                              |
// |                                                                       |
// | You should have received a copy of the GNU General Public License     |
// | along with this program; if not, write to the Free Software           |
// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
// | USA.                                                                  |
// +-----------------------------------------------------------------------+


#_____________________  PHP 5.2
if (! function_exists('json_encode')) {
  function json_encode($data) {
    switch (gettype($data)) {
      case 'boolean':
        return ($data ? 'true' : 'false');
      case 'null':
      case 'NULL':
        return 'null';
      case 'integer':
      case 'double':
        return $data;
      case 'string':
        return '"'. str_replace(array("\\",'"',"/","\n","\r","\t"), array("\\\\",'\"',"\\/","\\n","\\r","\\t"), $data) .'"';
      case 'object':
      case 'array':
        if ($data === array()) return '[]'; # empty array
        if (range(0, count($data) - 1) !== array_keys($data) ) { # string keys, unordered, non-incremental keys, .. - whatever, make object
          $out = "\n".'{';
          foreach($data as $key => $value) {
            $out .= json_encode((string) $key) . ':' . json_encode($value) . ',';
          }
          $out = substr($out, 0, -1) . "\n". '}';
        }else{
          # regular array
          $out = "\n".'[' . join("\n".',', array_map('json_encode', $data)) ."\n".']';
        }
        return $out;
    }
  }
}

class PwgJsonEncoder extends PwgResponseEncoder
{
  function encodeResponse($response)
  {
    $respClass = strtolower( get_class($response) );
    if ($respClass=='pwgerror')
    {
      return json_encode(
        array(
          'stat' => 'fail',
          'err' => $response->code(),
          'message' => $response->message(),
          )
      );
    }
    parent::flattenResponse($response);
    return json_encode(
        array(
          'stat' => 'ok',
          'result' => $response,
      )
    );
  }

  function getContentType()
  {
    return 'text/plain';
  }
}

?>