servers/rest_server/includes/rest_server.views.inc

   1 <?php
   2 // $Id$
   3
   4 /**
   5  * @file
   6  * Provide formatter class for all standard response formats.
   7  *
   8  */
   9
  10 /**
  11  * Base class for all response format views.
  12  */
  13 abstract class RESTServerView {
  14   protected $model;
  15   protected $arguments;
  16
  17   function __construct($model, $arguments=array()) {
  18     $this->model = $model;
  19     $this->arguments = $arguments;
  20   }
  21
  22   public abstract function render();
  23 }
  24
  25 class RESTServerViewBuiltIn extends RESTServerView {
  26   public function render() {
  27     switch ($this->arguments['format']) {
  28       case 'json':
  29         return $this->render_json($this->model);
  30       case 'jsonp':
  31         return $this->render_json($this->model, TRUE);
  32       case 'php':
  33         return $this->render_php($this->model);
  34       case 'xml':
  35         return $this->render_xml($this->model);
  36       case 'yaml':
  37         return $this->render_yaml($this->model);
  38       case 'bencode':
  39         return $this->render_bencode($this->model);
  40     }
  41     return '';
  42   }
  43
  44   private function render_json($data, $jsonp = FALSE) {
  45     $json = str_replace('\\/', '/', json_encode($data));
  46     if ($jsonp && isset($_GET['callback'])) {
  47       return sprintf('%s(%s);', $_GET['callback'], $json);
  48     }
  49     return $json;
  50   }
  51
  52   private function render_php($data) {
  53     return serialize($data);
  54   }
  55
  56   private function render_yaml($data) {
  57     include_once _rest_server_get_spyc_location();
  58     return Spyc::YAMLDump($data, 4, 60);
  59   }
  60
  61   private function render_bencode($data) {
  62     module_load_include('php', 'rest_server', 'lib/bencode');
  63     return bencode($data);
  64   }
  65
  66   private function render_xml($data) {
  67     $doc = new DOMDocument('1.0', 'utf-8');
  68     $root = $doc->createElement('result');
  69     $doc->appendChild($root);
  70
  71     $this->xml_recurse($doc, $root, $data);
  72
  73     return $doc->saveXML();
  74   }
  75
  76   private function xml_recurse(&$doc, &$parent, $data) {
  77     if (is_object($data)) {
  78       $data = get_object_vars($data);
  79     }
  80
  81     if (is_array($data)) {
  82       $assoc = FALSE || empty($data);
  83       foreach ($data as $key => $value) {
  84         if (is_numeric($key)) {
  85           $key = 'item';
  86         }
  87         else {
  88           $assoc = TRUE;
  89           $key = preg_replace('/[^A-Za-z0-9_]/', '_', $key);
  90           $key = preg_replace('/^([0-9]+)/', '_$1', $key);
  91         }
  92         $element = $doc->createElement($key);
  93         $parent->appendChild($element);
  94         $this->xml_recurse($doc, $element, $value);
  95       }
  96
  97       if (!$assoc) {
  98         $parent->setAttribute('is_array', 'true');
  99       }
 100     }
 101     elseif ($data !== NULL) {
 102       $parent->appendChild($doc->createTextNode($data));
 103     }
 104   }
 105 }