lancew/DojoList

<?php
/**
 * DojoList RSS file
 *
 * This file is the library to create the RSS feed for the site.
 *
 * PHP version 5
 *
 * LICENSE: please see the AGPL license file is data/agpl-3.0.txt
 *
 * @category  RSS
 * @package   DojoList
 * @author    Lance Wicks <lw@judocoach.com>
 * @copyright 2009 Lance Wicks
 * @license   http://www.gnu.org/licenses/agpl.html  AGPL License 3.0
 * @link      http://github.com/lancew/DojoList
 */
require_once 'lib/data.model.php'; 


function Load_RSS_data($file = 'data/dojo.rss')
{

    if (file_exists($file)) {
        $xml = simplexml_load_file($file);
    } else {
        return 'Failed to load RSS';
    }
    return $xml;
}



function Save_RSS_data($xml, $file = 'data/dojo.rss')
{
    $fh = fopen($file, 'w') or die("can't open file");
    fwrite($fh, $xml);
    fclose($fh);
    return $file;
}


function RSS_header()
{
    
    $rss_header = '<?xml version="1.0"?>
    <rss version="2.0">
    <channel>
        <title>DojoList Updates</title>
        <link>http://www.dojolist.org/</link>
        <description>Updates to Dojo listings</description>';
    date_default_timezone_set('Europe/London');
    $date = date(DATE_RFC822);
    $rss_header .= "<lastBuildDate>$date</lastBuildDate>";
        
    $rss_header .= '<generator>DojoList</generator>
    ';    
    return $rss_header;    

}

function Delete_Oldest_rss($max_items='20')
{
    $new_rss = RSS_header();
    $item_count = 0;
    $rss = Load_RSS_data();
    foreach ($rss->channel->item as $item) {
        if ($item_count < $max_items) {
            $new_rss .= '
            ';
            $new_rss .= $item->asXML();
            $new_rss .= '
            ';
        }
        //echo $item_count.':'.$max_items; 
        $item_count++;
    }
    $new_rss .= '</channel></rss>';
    return(Save_RSS_data($new_rss));
}
 


function Add_Rss_item($item_array = null)
{
    $new_rss = RSS_header();
    $item_count = 0;
    $rss = Load_RSS_data();
    $desc = $item_array['description'];
    $pubDate = date(DATE_RFC822);
    $guid = str_replace(' ', '', $pubDate);
    $guid = str_replace(',', '', $guid);
    
    $new_rss .= "
    <item>
            <title>$desc</title>
            <description>$desc</description>
            <pubDate>$pubDate</pubDate>
            <guid>$guid</guid>
    </item>
    ";
    
    foreach ($rss->channel->item as $item) {
           //print_r($item);
           $new_rss .= '
           ';
           $new_rss .= $item->asXML();
           $new_rss .= '
           ';
     
        //echo $item_count.':'.$max_items; 
        $item_count++;
    }
    $new_rss .= '</channel></rss>';
    Save_RSS_data($new_rss);
    Delete_oldest_rss();
 

    
}

 
 
 
    ?>