root/trunk/plog-rss.php

<?php
// this file handles the generation of the RSS feed.
include_once(dirname(__FILE__)."/plog-load-config.php");

function generate_RSS_feed ($level, $id, $search = "") {
    global $config;

    $config["feed_title"] = SmartStripSlashes($config["feed_title"]);

    if (!empty($search)) $level = "search";

    // aggregate feed of all albums with collection specified by id
    if ($level == "collection") {
        plogger_init_pictures(array(
        'type' => 'collection',
        'value' => $id,
        'limit' => $config['feed_num_entries'],
        'sortby' => 'id',
        ));
        $collection = get_collection_by_id($id);
        $config["feed_title"] .= ": " . $collection['name'] . " " . plog_tr("Collection");

    } else if ($level == "album") {
        plogger_init_pictures(array(
        'type' => 'album',
        'value' => $id,
        'limit' => $config['feed_num_entries'],
        'sortby' => 'id',
        ));
        $album = get_album_by_id($id);
        $config["feed_title"] .= ": " . $album['album_name'] . " " . plog_tr("Album");

    } else if ($level == "picture") {
        plogger_init_picture(array(
        'id' => $id,
        'comments' => 'DESC'
        ));
        $picture = get_picture_by_id($id);
        $config["feed_title"] .= ": " . basename($picture['path']);

    } else if ($level == "search") {
        plogger_init_search(array(
        'searchterms' => $search,
        'limit' => $config['feed_num_entries'],
        ));

    } else if (($level == "collections") or ($level == "")) {
        plogger_init_pictures(array(
        'type' => 'latest',
        'limit' => $config['feed_num_entries'],
        'sortby' => 'id',
        ));
        $config["feed_title"] .= ": " . plog_tr("Entire Gallery");
    }

    // generate RSS header
    $rssFeed = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
    $rssFeed.= "<rss version=\"2.0\" xmlns:atom=\"http://www.w3.org/2005/Atom\" xmlns:media=\"http://search.yahoo.com/mrss/\">\n";

    $rssFeed.= "<channel>\n";
    $rssFeed.= "<title>".$config['feed_title']."</title>\n";
    $rssFeed.= "<description>" . plog_tr("Plogger RSS Feed") . "</description>\n";
    $rssFeed.= "<language>".$config['feed_language']."</language>\n";
    $rssFeed.= "<docs>http://blogs.law.harvard.edu/tech/rss</docs>\n";
    $rssFeed.= "<generator>Plogger</generator>\n";
    $rssFeed.= "<link>".$config['gallery_url']."</link>\n";
    $rssFeed.= "<atom:link href=\"http://".$_SERVER['HTTP_HOST'].str_replace('&', '&amp;', $_SERVER['REQUEST_URI'])."\" rel=\"self\" type=\"application/rss+xml\" />\n";

    $header = 1;

    while(plogger_has_pictures()) {
        plogger_load_picture();
        // if at picture level, check to make sure it has comments first
        if ($level != "picture" || plogger_picture_has_comments()) {

            if ($header) {
                $submitdate = plogger_get_picture_date("D, d M Y H:i:s O",1);
                $takendate = plogger_get_picture_date();

                $rssFeed.= "<pubDate>". $submitdate . "</pubDate>\n";
                $rssFeed.= "<lastBuildDate>". $submitdate . "</lastBuildDate>\n";
                $header = 0;
            }

            $rssFeed .= "<item>\n";

            $urlPath = str_replace(array("%2F", "%3A"), array("/", ":"), rawurlencode(plogger_get_source_picture_url()));

            $caption = plogger_get_picture_caption();
            $thumbpath = plogger_get_picture_thumb(THUMB_RSS);

            //$pagelink = $config["address"] . plogger_get_picture_url();
            // XXX: Below won't look nice with mod_rewrite, but plogger_get_picture_url
            // returns wrong filename, needs to be fixed - still needs to be fixed as this does not always work as wanted either
            $pagelink = $config['gallery_url'] . "?level=picture&amp;id=" . plogger_get_picture_id();

            if ($caption == "" || $caption == "&nbsp;") $caption = plog_tr("New Image (no caption)");
            $caption .= " - " . $takendate;

            $descript = '&lt;p&gt;&lt;a href="'.$pagelink.'"
            title="'.$caption.'"&gt;
            &lt;img src="'.$thumbpath.'" alt="'.$caption.'" style="border: 1px solid #000000;" /&gt;
            &lt;/a&gt;&lt;/p&gt;&lt;p&gt;'.$caption.'&lt;/p&gt;';

            $descript .= '&lt;p&gt;'.htmlspecialchars(plogger_get_picture_description()).'&lt;/p&gt;';

            $rssFeed .= "\t<pubDate>" . $submitdate . "</pubDate>\n";
            $rssFeed .= "\t<title>" . $caption .  "</title>\n";
            $rssFeed .= "\t<link>" . $pagelink . "</link>\n";
            $rssFeed .= "\t<description>" . $descript .  "</description>\n";
            $rssFeed .= "\t<guid isPermaLink=\"false\">".$thumbpath."</guid>\n";
            $rssFeed .= "\t<media:content url=\"" . $urlPath . "\" type=\"image/jpeg\" />\n";
            $rssFeed .= "\t<media:title>" . $caption . "</media:title>\n";
            $rssFeed .= "</item>\n";
            if ($level == "picture") {
                while(plogger_picture_has_comments()) {
                    plogger_load_comment();
                    $rssFeed .= "<item>\n";
                    $rssFeed .= "\t<pubDate>" . plogger_get_comment_date("D, d M Y H:i:s O") . "</pubDate>\n";
                    $rssFeed .= "\t<title>Comment by " . plogger_get_comment_author() . "</title>\n";
                    $rssFeed .= "\t<link>" . $pagelink . "</link>\n";
                    $rssFeed .= "\t<description>" . plogger_get_comment_text() .  "</description>\n";
                    $rssFeed .= "\t<guid isPermaLink=\"true\">".$pagelink."#Comment-".plogger_get_comment_id()."</guid>\n";
                    $rssFeed .= "</item>\n";
                }
            }
        }
    }

    $rssFeed .= "</channel>\n</rss>";
    echo $rssFeed;
}

// send proper header
header("Content-Type: application/xml");

$level = isset($_GET['level']) ? $_GET['level'] : '';
$id = isset($_GET['id']) ? intval($_GET['id']) : '0';

// process path here - is set if mod_rewrite is in use

// Some Estonian remarks was here
if (!empty($_REQUEST['path'])) {
    // The following line calculates the path in the album and excludes any subdirectories if
    // Plogger is installed in one
    $path = join("/",array_diff(explode("/",$_SERVER["REQUEST_URI"]),explode("/",$_SERVER["PHP_SELF"])));
    $resolved_path = resolve_path($path);
    $level = (isset($resolved_path['level'])) ? $resolved_path['level'] : "collections";
    $id = (isset($resolved_path['id'])) ? $resolved_path['id'] : 0;
}

$parts = parse_url($_SERVER['REQUEST_URI']);
if (isset($parts['query'])){
    parse_str($parts['query'],$query_parts);
}
if (isset($query_parts['searchterms'])) {
    generate_RSS_feed($level, $id, $query_parts['searchterms']);
} else {
    generate_RSS_feed($level, $id);
}

?>