Atom.class.php

gehe zur Dokumentation dieser Datei

<?php
// ---------------------------------------------------------------------------
// $Id$
// ---------------------------------------------------------------------------
// OpenRat Content Management System
// Copyright (C) 2002 Jan Dankert, jandankert@jandankert.de
//
// 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; either version 2
// of the License, or (at your option) any later version.
//
// 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.
// ---------------------------------------------------------------------------



class Atom extends Dynamic
{
     var $parameters  = Array(
          'folderid'        =>'Id of the folder whose pages should go into the Atom-Feed, default: the root folder',
          'feed_url'        =>'Url of the feed, default: blank',
          'feed_title'      =>'Title of the feed, default: Name of folder',
          'feed_description'=>'Description of the feed, default: Description of folder'
          );

     var $folderid     = 0;

     var $description      = 'Creates an Atom-Feed of pages in a folder';
     var $api;

     var $feed_url         = '';
     var $feed_title       = '';
     var $feed_description = '';

     // Erstellen des Hauptmenues
     function execute()
     {
          $feed = array();

          // Lesen des Root-Ordners
          if   ( intval($this->folderid) == 0 )
               $folder = new Folder( $this->getRootObjectId() );
          else
               $folder = new Folder( intval($this->folderid) );

          $folder->load();

          if   ( $this->feed_title == '' )
               $this->feed_title = $folder->name;

          if   ( $this->feed_description == '' )
               $this->feed_description = $folder->desc;

          $feed['title'      ] = $this->feed_title;              
          $feed['description'] = $this->feed_description;             
          $feed['url'        ] = $this->feed_url;           
          $feed['items'      ] = array();              
          // Schleife ueber alle Inhalte des Root-Ordners
          foreach( $folder->getObjectIds() as $id )
          {
               if   ( $id == $this->getObjectId() )
                    continue;
               $o = new Object( $id );
               $o->languageid = $this->page->languageid;
               $o->load();
               if ( $o->isPage ) // Nur wenn Seite
               {
                    $p = new Page( $id );
                    $p->load();

                    $item = array();
                    $item['title'      ] = $p->name;
                    $item['description'] = $p->desc;
                    $item['date'       ] = $p->lastchangeDate;
                    if   ( empty($this->feed_url) )
                         $item['link'       ] = $this->pathToObject($id);
                    else
                         $item['link'       ] = $this->feed_url;
                    
                    $feed['items'][] = $item;
               }
          }
          
          $feed = $this->atomFeed($feed);

          $this->output( $feed );
     }
     
     
     function atomFeed($input, $stylesheet='')
     {
          $input["encoding"]  = (empty($input["encoding"] ))?"UTF-8":$input["encoding"];
          $input["language"]  = (empty($input["language"] ))?"en-us":$input["language"];
          
          if   ( empty($input['title'      ])) $input['title'      ] = ''; 
          if   ( empty($input['description'])) $input['description'] = ''; 
          if   ( empty($input['link'       ])) $input['link'       ] = ''; 
          $feed = '<?xml version="1.0" encoding="'.$input["encoding"].'"?>';
          $feed .= (!empty($stylesheet))?"\n".'<?xml-stylesheet type="text/xsl" href="'.$stylesheet.'"?>':"";
          $feed .= <<<__RSS__
          
          <feed xmlns="http://www.w3.org/2005/Atom">
          <title>{$input["title"]}</title>
          
__RSS__;
              foreach($input["items"] as $item)
              {
                    if   ( empty($item['title'      ])) $item['title'      ] = ''; 
                    if   ( empty($item['description'])) $item['description'] = ''; 
                  $feed .= "\n<entry>\n<title>".$item["title"]."</title>";
                  $feed .= "\n<summary><![CDATA[".$item["description"]."]]></summary>";
                 $feed .= "\n<updated>".date('Y-m-d\TH:i:s\Z', $item["date"])."</updated>";
                 $feed .= "\n<link href=\"".$item["link"]."\" />";
                  $feed .= "\n</entry>\n";
              }
               $feed .= "\n</feed>";
          return $feed;
     }
}