gosa-core/plugins/generic/dashBoard/class_rssReader.inc

   1 <?php
   2
   3 class rssReader{
   4
   5     public static $attributes = array(
   6             'title','link','description','language','copyright','skipHours','timestamp',
   7             'managingEditor','webMaster','pubDate','lastBuildDate','category',
   8             'generator','docs','cloud','ttl','image','rating','textInput','skipDays');
   9
  10     public static function parseFeedFromUrl($urls)
  11     {
  12         // We support multiple urls at once.
  13         if(!is_array($urls)) $urls = array($urls);
  14         foreach($urls as $url){
  15             $doc = new DOMDocument();
  16             $res = $doc->load($url);
  17             if(!$res){
  18                 trigger_error("Failed to load feed '{$url}'!");
  19             }else{
  20                 return(self::docToFeedEntries($doc, $url));
  21             }
  22         }
  23         return(array());
  24     }
  25
  26     public static function parseFeedFromSource($sources)
  27     {
  28         // We support multiple urls at once.
  29         if(!is_array($sources)) $urls = array($sources);
  30         foreach($sources as $source){
  31             $doc = new DOMDocument();
  32             $res = @$doc->loadXML($source);
  33             if(!$res){
  34                 trigger_error("Failed to load feed '{$source}'!");
  35             }else{
  36                 return(self::docToFeedEntries($doc, 'from source'));
  37             }
  38         }
  39         return(array());
  40     }
  41
  42
  43     private static function docToFeedEntries($doc, $url)
  44     {
  45         $entries = array();
  46         foreach ($doc->getElementsByTagName('item') as $item) {
  47
  48             // Collect data from feed
  49             $entry = array();
  50             $entry['url'] = $url;
  51             foreach(self::$attributes as $attr){
  52                 $entry[$attr] =NULL;
  53                 $obj = $item->getElementsByTagName($attr);
  54                 if(is_object($obj->item(0))){
  55                     $entry[$attr] = $obj->item(0)->nodeValue;
  56                 }
  57             }
  58
  59             // Fake timestamp in none is given.
  60             if($entry['pubDate'] == NULL){
  61                 $entry['timestamp'] = NULL;
  62             }else{
  63
  64                 // Create an entry timestamp
  65                 $entry['timestamp'] = strtotime($entry['pubDate']);
  66             }
  67             $entries[] = $entry;
  68         }
  69         return($entries);
  70     }
  71
  72     public static function sortFeedResultBy($feedRes , $sortBy = 'timestamp')
  73     {
  74
  75         // Do not try to sort for invalid attributes.
  76         if(!in_array_strict($sortBy, self::$attributes)){
  77             trigger_error("Invalid sortby attribute '{$sortBy}'!");
  78             return($feedRes);
  79         }
  80
  81         // Prepare feeds to be sorted, put them in an array indexed by the 'sortBy' attribute.
  82         $data = array();
  83         foreach($feedRes as $feed){
  84             $key = "{$feed[$sortBy]}";
  85             $c = '1';
  86             while(empty($key) || isset($data[$key])){
  87                 $key = "{$c}_{$feed[$sortBy]}";
  88                 $c++;
  89             }
  90             $data[$key] = $feed;
  91         }
  92
  93         // Sort the natural way and return the results.
  94         uksort($data, 'strnatcasecmp');
  95         return($data);
  96     }
  97
  98 }
  99
 100 ?>