<?php  require_once($_SERVER['DOCUMENT_ROOT'] . "/eclipse.org-common/system/xml_sax_parsing.php");

function & get_news($file_name) {
	$news_file = $file_name . ".rss";
	$file_name = $_SERVER['DOCUMENT_ROOT'] . "/callisto/scripts/" . $news_file;
	$handler = new RssFileHandler();
	parse_xml_file($file_name, $handler);
	return $handler->feed;
}

function rss_to_html($file_name, $count=3) {
	$rss = get_news($file_name);
	ob_start();
	foreach ($rss->channel as $channel) 
	{
		?>
			<div class="homeitem noMarginRight">
			<h3><?=$channel->title;?> 
			<a href="news.php"><img src="/images/more.gif"></a></h3>
			<ul>
		<?
		foreach ($channel->item as $item) 
		{
			if ($count == 0) break;
			$then = $item->pubDate;
			$stringDate = date("M d, Y", $then);
			?>
				<li><a href="<?=$item->link;?>"><?=$item->title;?></a></li>
			<?
			$count--;
		}
		?> </div><?
	}		
	$html = ob_get_contents();
	ob_end_clean();
	return $html;
}

function rss_to_html_verbose($file_name, $count=3) {
	$rss = get_news($file_name);
	ob_start();
	foreach ($rss->channel as $channel) 
	{
		?>
			<h3><a href="/callisto/scripts/whatsnew.rss"><img src="/images/rss.gif" align="right" title="RSS Feed" alt="[RSS]" /></a><?=$channel->title;?></h3><br/>
			<ul>
		<?
		foreach ($channel->item as $item) 
		{
			if ($count == 0) break;
			$then = $item->pubDate;
			$stringDate = date("M d, Y", $then);
			?>
				<li>
				<a href="<?=$item->link;?>"><?=$item->title;?></a> posted <?=$stringDate;?><br/><br/><?=$item->description;?><br/><br/>
				</li>
			<?
			$count--;
		}
		?>
			</ul>
		<?
	}		
	$html = ob_get_contents();
	ob_end_clean();
	return $html;
}
/*
 * Instances of the Feed class represent an RSS file.
 */
class Feed {
	var $channel;
	
	function Feed() {
		$this->channel = array();
	}
	
	function add_channel(&$channel) {
		array_push($this->channel, $channel);
	}
}

/*
 * Instances of the Channel class represent a channel in the RSS file.
 */
class Channel {
	var $title;
	var $link;
	var $description;
	var $image;	
	var $item;
	
	function Channel() {
		$this->item = array();
	}
	
	function add_item(&$item) {
		array_push($this->item, $item);
	}
}

/*
 * Instances of the Image class represent an image (presumably) on an
 * image. We don't currently use this information.
 */
class Image {
	var $url;
	var $title;
	var $link;
}

/*
 * Instances of the Item class represent an item in a channel.
 */
class Item {
	var $title;
	var $link;
	var $description;
	var $pubDate;
}


/*
 * The rest of the code in this file is concerned with reading XML
 * into an object format. Once we update to PHP 5, we can get rid of
 * all of this junk and just use the simpleXML apis.
 */

/*
 * The RssFileHandler represents the file being parsed. It does
 * only one thing: provides a handler for the contents of the
 * the file.
 */
class RssFileHandler extends XmlFileHandler {
	var $feed;
	/*
	 * This method returns the root handler for a RSS file
	 * The root handler essentially represents the file itself
	 * rather than any actual element in the file. The returned
	 * element handler will deal with any elements that may occur
	 * in the root of the XML file.
	 */
	function get_root_element_handler() {
		return new RssRootHandler();
	}

	function end_root_element_handler($handler) {
		$this->feed = & $handler->feed;
	}
}

/*
 * The RssRootHandler class takes care of the root element 
 * in the file. This handler doesn't correspond to any particular
 * element that may occur in the XML file. It represents the file
 * itself and must deal with any elements that occur at the root
 * level in that file.
 */
class RssRootHandler extends XmlElementHandler {
	var $feed;

	/*
	 * This method handles the <rss>...</rss> element.
	 */
	function & get_rss_handler($attributes) {
		$retVal = new RssHandler();
		return $retVal;
	}

	function end_rss_handler($handler) {
		$this->feed = & $handler->feed;
	}
}

/*
 * The FeedHandler class takes care of the root element in the file.
 */
class RssHandler extends XmlElementHandler {
	var $feed;
	
	function RssHandler() {
		$this->feed = new Feed();
	}
	
	/*
	 * This method handles the <channel>...</channel> element.
	 */
	function & get_channel_handler($attributes) {
		$retVal = new ChannelHandler();
		return $retVal;
	}

	function end_channel_handler($handler) {
		$this->feed->add_channel($handler->channel);
	}
}

class ChannelHandler extends XmlElementHandler {
	var $channel;
	
	function ChannelHandler() {
		$this->channel = new Channel();
	}
	
	/*
	 * This method handles the <title>...</title> element.
	 */
	function & get_title_handler($attributes) {
		$retVal = new SimplePropertyHandler($this->channel, "title"); 
		return $retVal;
	}
	/*
	 * This method handles the <link>...</link> element.
	 */
	function & get_link_handler($attributes) {
		$retVal =  new SimplePropertyHandler($this->channel, "link");
		return $retVal;
	}
	/*
	 * This method handles the <description>...</description> element.
	 */
	function & get_description_handler($attributes) {
		$retVal = new SimplePropertyHandler($this->channel, "description");
		return $retVal;
	}
	
	/*
	 * This method handles the <title>...</title> element.
	 */
	function & get_item_handler($attributes) {
		$retVal = new ItemHandler();
		return $retVal;
	}
	
	function end_item_handler($handler) {
		$this->channel->add_item($handler->item);
	}
	
	/*
	 * This method handles the <image>...</image> element.
	 */
	function & get_image_handler($attributes) {
		$retVal = new ImageHandler();
		return $retVal;
	}
	
	function end_image_handler($handler) {
		$this->channel->image = $handler->image;
	}
}

class ItemHandler extends XmlElementHandler {
	var $item;
	
	function ItemHandler() {
		$this->item = new Item();
	}
	
	/*
	 * This method handles the <title>...</title> element.
	 */
	function & get_title_handler($attributes) {
		$retVal = new SimplePropertyHandler($this->item, "title");
		return $retVal;
	}
	/*
	 * This method handles the <link>...</link> element.
	 */
	function & get_link_handler($attributes) {
		$retVal = new SimplePropertyHandler($this->item, "link");
		return $retVal;
	}
	/*
	 * This method handles the <description>...</description> element.
	 */
	function & get_description_handler($attributes) {
		$retVal = new SimplePropertyHandler($this->item, "description");
		return $retVal;
	}
	
	/*
	 * This method handles the <pubDate>...</pubDate> element.
	 */
	function & get_pubdate_handler($attributes) {
		$retVal = new SimpleTextHandler();
		return $retVal;
	}
	
	function end_pubdate_handler($handler) {
		$value = trim($handler->text);
		if (strlen($value)>0) {
			$this->item->pubDate = strtotime($value);
		}
	}
}

class ImageHandler extends XmlElementHandler {
	var $image;
	
	function ImageHander() {
		$this->image = new Image();
	}	
		
	/*
	 * This method handles the <title>...</title> element.
	 */
	function & get_title_handler($attributes) {
		$retVal = new SimplePropertyHandler($this->image, "title");
		return $retVal;
	}
	/*
	 * This method handles the <url>...</url> element.
	 */
	function & get_url_handler($attributes) {
		$retVal = new SimplePropertyHandler($this->image, "url");
		return $retVal;
	}
	/*
	 * This method handles the <link>...</link> element.
	 */
	function & get_link_handler($attributes) {
		$retVal = new SimplePropertyHandler($this->image, "link");
		return $retVal;
	}
}


?>