class.ilFeedWriter.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2006 ILIAS open source, University of Cologne            |
        |                                                                             |
        | 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. |
        +-----------------------------------------------------------------------------+
*/

include_once("Services/Feeds/classes/class.ilFeedItem.php");

class ilFeedWriter
{
        var $encoding = "UTF-8";
        var $ch_about = "";
        var $ch_title = "";
        var $ch_link = "";
        var $ch_description = "";
        var $items = array();
        
        function ilFeedWriter()
        {
        }
        
        function setEncoding($a_enc)
        {
                $this->encoding = $a_enc;
        }
        
        function getEncoding()
        {
                return $this->encoding;
        }

        function setChannelAbout($a_ab)
        {
                $this->ch_about = $a_ab;
        }
        
        function getChannelAbout()
        {
                return $this->ch_about;
        }

        function setChannelTitle($a_title)
        {
                $this->ch_title = $a_title;
        }
        
        function getChannelTitle()
        {
                return $this->ch_title;
        }

        function setChannelLink($a_link)
        {
                $this->ch_link = $a_link;
        }
        
        function getChannelLink()
        {
                return $this->ch_link;
        }

        function setChannelDescription($a_desc)
        {
                $this->ch_desc = $a_desc;
        }
        
        function getChannelDescription()
        {
                return $this->ch_desc;
        }

        function addItem($a_item)
        {
                $this->items[] = $a_item;
        }
        
        function getItems()
        {
                return $this->items;
        }

        function prepareStr($a_str)
        {
                $a_str = str_replace("&", "&amp;", $a_str);
                $a_str = str_replace("<", "&lt;", $a_str);
                $a_str = str_replace(">", "&gt;", $a_str);
                return $a_str;
        }

        function getFeed()
        {
                include_once("classes/class.ilTemplate.php");
                $this->tpl = new ilTemplate("tpl.rss_2_0.xml", true, true, "Services/Feeds");
                
                $this->tpl->setVariable("XML", "xml");
                $this->tpl->setVariable("CONTENT_ENCODING", $this->getEncoding());
                $this->tpl->setVariable("CHANNEL_ABOUT", $this->getChannelAbout());
                $this->tpl->setVariable("CHANNEL_TITLE", $this->getChannelTitle());
                $this->tpl->setVariable("CHANNEL_LINK", $this->getChannelLink());
                $this->tpl->setVariable("CHANNEL_DESCRIPTION", $this->getChannelDescription());
                
                foreach($this->items as $item)
                {
                        $this->tpl->setCurrentBlock("rdf_seq");
                        $this->tpl->setVariable("RESOURCE", $item->getAbout());
                        $this->tpl->parseCurrentBlock();
                        
                        // Date
                        if ($item->getDate() != "")
                        {
                                $this->tpl->setCurrentBlock("date");
                                $d = $item->getDate();
                                $yyyy = substr($d, 0, 4);
                                $mm = substr($d, 5, 2);
                                $dd = substr($d, 8, 2);
                                $h = substr($d, 11, 2);
                                $m = substr($d, 14, 2);
                                $s = substr($d, 17, 2);
                                $this->tpl->setVariable("ITEM_DATE",
                                        date("r", mktime($h, $m, $s, $mm, $dd, $yyyy)));
                                $this->tpl->parseCurrentBlock();
                        }
                        
                        // Enclosure
                        if ($item->getEnclosureUrl() != "")
                        {
                                $this->tpl->setCurrentBlock("enclosure");
                                $this->tpl->setVariable("ENC_URL", $item->getEnclosureUrl());
                                $this->tpl->setVariable("ENC_LENGTH", $item->getEnclosureLength());
                                $this->tpl->setVariable("ENC_TYPE", $item->getEnclosureType());
                                $this->tpl->parseCurrentBlock();
                        }
                        
                        $this->tpl->setCurrentBlock("item");
                        $this->tpl->setVariable("ITEM_ABOUT", $item->getAbout());
                        $this->tpl->setVariable("ITEM_TITLE", $item->getTitle());
                        $this->tpl->setVariable("ITEM_DESCRIPTION", $item->getDescription());
                        $this->tpl->setVariable("ITEM_LINK", $item->getLink());
                        $this->tpl->parseCurrentBlock();
                        
                }
                
                $this->tpl->parseCurrentBlock();
                return $this->tpl->get();
        }
        
        function showFeed()
        {
                header("Content-Type: text/xml; charset=UTF-8;");
                echo $this->getFeed();
        }
}
?>