class.ilFeedWriter.php

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<?php

/* Copyright (c) 1998-2012 ILIAS open source, Extended GPL, see docs/LICENSE */

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("./Services/UICore/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();
        }

        function getContextPath($a_ref_id)
        {
                global $tree, $lng;

                $items = array();

                if ($a_ref_id > 0)
                {
                        $path = $tree->getPathFull($a_ref_id);

                        // we want to show the full path, from the major container to the item
                        // (folders are not! treated as containers here), at least one parent item
                        $r_path = array_reverse($path);
                        $first = "";
                        $omit = array();
                        $do_omit = false;
                        foreach ($r_path as $key => $row)
                        {
                                if ($first == "")
                                {
                                        if (in_array($row["type"], array("root", "cat", "grp", "crs")) )
                                        {
                                                $first = $row["child"];
                                        }
                                }
                                $omit[$row["child"]] = $do_omit;
                        }

                        $add_it = false;
                        foreach ($path as $key => $row)
                        {
                                if ($first == $row["child"])
                                {
                                        $add_it = true;
                                }

                                if ($add_it && !$omit[$row["child"]] &&
                                        (($row["child"] != $a_ref_id)))
                                {
                                        if ($row["title"] == "ILIAS" && $row["type"] == "root")
                                        {
                                                $row["title"] = $lng->txt("repository");
                                        }
                                        $items[] = $row["title"];
                                }
                        }
                }

                if (count($items) > 0)
                {
                        return "[".implode(" > ", $items)."]";
                }
                return "";
        }


}
?>