root/devel-backup/_weblog/rss2.php

<?php

    //    ELGG weblog RSS 2.0 page
    // this is now only used for tag-search feeds

    // Run includes
    require("../includes.php");
    
    run("profile:init");
    run("friends:init");
    run("weblogs:init");
    
    global $page_owner;
    
    if (isset($page_owner)) {
        
        $username = run("users:id_to_name", $page_owner);
        if ($username) {
/*            
            if (!isset($_REQUEST['tag']) || trim($_REQUEST['tag'])=="" ) {
                // no tag, serve plain file
                
                $publish_folder = substr($username,0,1);
                $rssfile = path . "_rss/data/" . $publish_folder . "/" . $username . "/weblog.xml";
                $rssurl = url . $username . "/weblog/rss2/";
                
                if (!file_exists($rssfile)) {
                    // to allow for upgrading from pre-static version
                    $rssresult = run("weblogs:rss:publish", array($page_owner, false));
                }
                header("{$_SERVER['SERVER_PROTOCOL']} 301 Moved Permanently");
                header("Location: $rssurl");
                exit;
                
            } else {
                // a tag has been set
                // not using static file for tags, because number of tags * number of users...
*/                
                $sitename = sitename;
                
                $output = "";
                
                $tag = trim($_REQUEST['tag']);
                
                $rssweblog = sprintf(gettext("Weblog items tagged with %s"),$tag);
                
                $info = db_query("select * from users where ident = $page_owner");
                if (sizeof($info) > 0) {
                    $info = $info[0];
                    $name = (stripslashes($info->name));
                    $url = url;
                    $username = (stripslashes($info->username));
                    $mainurl = (url . $username . "/weblog/");
                    $rssurl = $mainurl . "rss/" . urlencode(trim($_REQUEST['tag']));
                    $rssdescription = sprintf(gettext("The weblog for %s, hosted on %s."),$name,$sitename);

                    /* <?xml-stylesheet type="text/xsl" href="{$url}_rss/styles.xsl?url=$mainurl&rssurl=$rssurl"?> */
                    /* <?xml-stylesheet type="text/xsl" href="{$rssurl}/rssstyles.xsl"?> */
                    $output .= <<< END
<?xml-stylesheet type="text/xsl" href="{$rssurl}/rssstyles.xsl"?>

<rss version='2.0'   xmlns:dc='http://purl.org/dc/elements/1.1/'>                    
    <channel xml:base='$mainurl'>
        <title><![CDATA[$name : $rssweblog]]></title>
        <description><![CDATA[$rssdescription]]></description>
        <link>$mainurl</link>
END;

                    if (isset($_REQUEST['modifier']) && $_REQUEST['modifier'] == "not") {
                        $output .= run("weblogs:rss:getitems", array($page_owner, 10, $tag,"not"));
                    } else {
                        $output .= run("weblogs:rss:getitems", array($page_owner, 10, $tag,""));
                    }
                    
                    $output .= <<< END

    </channel>
</rss>
END;
                }
            
                if ($output) {
                    header("Pragma: public");
                    header("Cache-Control: public"); 
                    header('Expires: ' . gmdate("D, d M Y H:i:s", (time()+3600)) . " GMT");
                    
                    $if_none_match = preg_replace('/[^0-9a-f]/', '', $_SERVER['HTTP_IF_NONE_MATCH']);
                    
                    $etag = md5($output);
                    header('ETag: "' . $etag . '"');
                    
                    if ($if_none_match == $etag) {
                        header("{$_SERVER['SERVER_PROTOCOL']} 304 Not Modified");
                        exit;
                    }
                    
                    header("Content-Length: " . strlen($output));
                    
                    header("Content-type: text/xml");
                    echo $output;
                }
                
//            }
        }
    }