magpie update to 0.71.1 (#163)

darcs-hash:20050225123742-9977f-009c7a4a54c66611db36e714d488597de14b4a6d.gz

1 files changed, 567 insertions, 525 deletions

diff --git a/inc/magpie/rss_parse.inc b/inc/magpie/rss_parse.inc
index 337dc3596..af4020ebf 100644
--- a/inc/magpie/rss_parse.inc
+++ b/inc/magpie/rss_parse.inc
@@ -1,546 +1,588 @@
 <?php
-/*
- * Project:     MagpieRSS: a simple RSS integration tool
- * File:        rss_parse.inc  - parse an RSS or Atom feed
- *				return as a simple object.
- *
- * Handles RSS 0.9x, RSS 2.0, RSS 1.0, and Atom 0.3
- *
- * The lastest version of MagpieRSS can be obtained from:
- * http://magpierss.sourceforge.net
- *
- * For questions, help, comments, discussion, etc., please join the
- * Magpie mailing list:
- * magpierss-general@lists.sourceforge.net
- *
- * Author:      Kellan Elliott-McCrea <kellan@protest.net>
- * Version:		0.6a
- * License:		GPL
- *
- *
- *  ABOUT MAGPIE's APPROACH TO PARSING:
- *   - Magpie is based on expat, an XML parser, and therefore will only parse
- *     valid XML files.  This includes all properly constructed RSS or Atom.
- *
- *   - Magpie is an inclusive parser.  It will include any elements that 
- *     it can turn into a key value pair in the parsed feed object it returns. 
- *      
- *   - Magpie supports namespaces, and will return any elements found in a 
- *     namespace in a sub-array, with the key point to that array being the 
- *     namespace prefix.  
- *     (e.g. if an item contains a <dc:date> element, then that date can 
- *     be accessed at $item['dc']['date']
- *      
- *   - Magpie supports nested elements by combining the names.  If an item 
- *     includes XML like:
- *      <author>
- *        <name>Kellan</name>
- *      </author>
- *      
- *    The name field is accessible at $item['author_name']
- *  
- *   - Magpie makes no attempt validate a feed beyond insuring that it
- *     is valid XML.   
- *     RSS validators are readily available on the web at:
- *       http://feeds.archive.org/validator/
- *       http://www.ldodds.com/rss_validator/1.0/validator.html
- *
- *
- * EXAMPLE PARSED RSS ITEM:
- *
- * Magpie tries to parse RSS into easy to use PHP datastructures.
- *
- * For example, Magpie on encountering (a rather complex) RSS 1.0 item entry:
- *
- * <item rdf:about="http://protest.net/NorthEast/calendrome.cgi?span=event&#38;ID=210257">
- *   <title>Weekly Peace Vigil</title>
- *   <link>http://protest.net/NorthEast/calendrome.cgi?span=event&#38;ID=210257</link>
- *   <description>Wear a white ribbon</description>
- *   <dc:subject>Peace</dc:subject>
- *   <ev:startdate>2002-06-01T11:00:00</ev:startdate>
- *   <ev:location>Northampton, MA</ev:location>
- *   <ev:type>Protest</ev:type>
- * </item>
- * 
- * Would transform it into the following associative array, and push it
- * onto the array $rss-items
- *
- * array(
- *	title => 'Weekly Peace Vigil',
- *	link => 'http://protest.net/NorthEast/calendrome.cgi?span=event&#38;ID=210257',
- *	description => 'Wear a white ribbon',
- *	dc => array (
- *			subject => 'Peace'
- *		),
- *	ev => array (
- *		startdate => '2002-06-01T11:00:00',
- *		enddate => '2002-06-01T12:00:00',
- *		type => 'Protest',
- *		location => 'Northampton, MA'
- *	)
- * )
- *
- *
- *
- *  A FEW NOTES ON PARSING Atom FEEDS
- *
- *  Atom support is considered alpha.  Atom elements will be often be available
- *  as their RSS equivalent, summary is available as description for example.
- *
- *  Elements of mode=xml, as flattened into a single string, just as if they
- *  had been wrapped in a CDATA container.
- *
- *  See:  http://laughingmeme.org/archives/001676.html
- *
- */
+
+/**
+* Project:     MagpieRSS: a simple RSS integration tool
+* File:        rss_parse.inc  - parse an RSS or Atom feed
+*               return as a simple object.
+*
+* Handles RSS 0.9x, RSS 2.0, RSS 1.0, and Atom 0.3
+*
+* The lastest version of MagpieRSS can be obtained from:
+* http://magpierss.sourceforge.net
+*
+* For questions, help, comments, discussion, etc., please join the
+* Magpie mailing list:
+* magpierss-general@lists.sourceforge.net
+*
+* @author           Kellan Elliott-McCrea <kellan@protest.net>
+* @version          0.7a
+* @license          GPL
+*
+*/
 
 define('RSS', 'RSS');
 define('ATOM', 'Atom');
 
+require_once (MAGPIE_DIR . 'rss_utils.inc');
 
+/**
+* Hybrid parser, and object, takes RSS as a string and returns a simple object.
+*
+* see: rss_fetch.inc for a simpler interface with integrated caching support
+*
+*/
 class MagpieRSS {
-	/*
-	 * Hybrid parser, and object.  (probably a bad idea! :)
-	 *
-	 * Useage Example:
-	 *
-	 * $some_rss = "<?xml version="1.0"......
-	 *
-	 * $rss = new MagpieRSS( $some_rss );
-	 *
-	 * // print rss chanel title
-	 * echo $rss->channel['title'];
-	 *
-	 * // print the title of each item
-	 * foreach ($rss->items as $item ) {
-	 *	  echo $item[title];
-	 * }
-	 *
-	 * see: rss_fetch.inc for a simpler interface
-	 */
-	 
-	var $parser;
-	
-	var $current_item	= array();	// item currently being parsed
-    var $items			= array();	// collection of parsed items
-	var $channel		= array();	// hash of channel fields
-	var $textinput		= array();
-	var $image			= array();
-	var $feed_type;
-	var $feed_version;
-
-	// parser variables
-	var $stack				= array(); // parser stack
-	var $inchannel			= false;
-	var $initem 			= false;
-	var $incontent			= false; // if in Atom <content mode="xml"> field 
-	var $intextinput		= false;
-	var $inimage 			= false;
-	var $current_field		= '';
-	var $current_namespace	= false;
-	
-	var $ERROR = "";
-	
-	var $_CONTENT_CONSTRUCTS = array('content', 'summary', 'info', 'title', 'tagline', 'copyright');
-/*======================================================================*\
-    Function: MagpieRSS
-    Purpose:  Constructor, sets up XML parser,parses source,
-			  and populates object.. 
-	Input:	  String containing the RSS to be parsed
-\*======================================================================*/
-	function MagpieRSS ($source) {
-		
-		# if PHP xml isn't compiled in, die
-		#
-		if (!function_exists('xml_parser_create')) {
-			$this->error( "Failed to load PHP's XML Extension. " . 
-						  "http://www.php.net/manual/en/ref.xml.php",
-						   E_USER_ERROR );
-		}
-		
-		$parser = @xml_parser_create();
-		
-		if (!is_resource($parser))
-		{
-			$this->error( "Failed to create an instance of PHP's XML parser. " .
-						  "http://www.php.net/manual/en/ref.xml.php",
-						  E_USER_ERROR );
-		}
+    var $parser;
+    
+    var $current_item   = array();  // item currently being parsed
+    var $items          = array();  // collection of parsed items
+    var $channel        = array();  // hash of channel fields
+    var $textinput      = array();
+    var $image          = array();
+    var $feed_type;
+    var $feed_version;
+    var $encoding       = '';       // output encoding of parsed rss
+    
+    var $_source_encoding = '';     // only set if we have to parse xml prolog
+    
+    var $ERROR = "";
+    var $WARNING = "";
+    
+    // define some constants
+    
+    var $_CONTENT_CONSTRUCTS = array('content', 'summary', 'info', 'title', 'tagline', 'copyright');
+    var $_KNOWN_ENCODINGS    = array('UTF-8', 'US-ASCII', 'ISO-8859-1');
 
-		
-		$this->parser = $parser;
-		
-		# pass in parser, and a reference to this object
-		# setup handlers
-		#
-		xml_set_object( $this->parser, $this );
-		xml_set_element_handler($this->parser, 
-				'feed_start_element', 'feed_end_element' );
-						
-		xml_set_character_data_handler( $this->parser, 'feed_cdata' ); 
-	
-		$status = xml_parse( $this->parser, $source );
-		
-		if (! $status ) {
-			$errorcode = xml_get_error_code( $this->parser );
-			if ( $errorcode != XML_ERROR_NONE ) {
-				$xml_error = xml_error_string( $errorcode );
-				$error_line = xml_get_current_line_number($this->parser);
-				$error_col = xml_get_current_column_number($this->parser);
-				$errormsg = "$xml_error at line $error_line, column $error_col";
+    // parser variables, useless if you're not a parser, treat as private
+    var $stack              = array(); // parser stack
+    var $inchannel          = false;
+    var $initem             = false;
+    var $incontent          = false; // if in Atom <content mode="xml"> field 
+    var $intextinput        = false;
+    var $inimage            = false;
+    var $current_field      = '';
+    var $current_namespace  = false;
+    
 
-				$this->error( $errormsg );
-			}
-		}
-		
-		xml_parser_free( $this->parser );
+    /**
+     *  Set up XML parser, parse source, and return populated RSS object..
+     *   
+     *  @param string $source           string containing the RSS to be parsed
+     *
+     *  NOTE:  Probably a good idea to leave the encoding options alone unless
+     *         you know what you're doing as PHP's character set support is
+     *         a little weird.
+     *
+     *  NOTE:  A lot of this is unnecessary but harmless with PHP5 
+     *
+     *
+     *  @param string $output_encoding  output the parsed RSS in this character 
+     *                                  set defaults to ISO-8859-1 as this is PHP's
+     *                                  default.
+     *
+     *                                  NOTE: might be changed to UTF-8 in future
+     *                                  versions.
+     *                               
+     *  @param string $input_encoding   the character set of the incoming RSS source. 
+     *                                  Leave blank and Magpie will try to figure it
+     *                                  out.
+     *                                  
+     *                                   
+     *  @param bool   $detect_encoding  if false Magpie won't attempt to detect
+     *                                  source encoding. (caveat emptor)
+     *
+     */
+    function MagpieRSS ($source, $output_encoding='ISO-8859-1', 
+                        $input_encoding=null, $detect_encoding=true) 
+    {   
+        # if PHP xml isn't compiled in, die
+        #
+        if (!function_exists('xml_parser_create')) {
+            $this->error( "Failed to load PHP's XML Extension. " . 
+                          "http://www.php.net/manual/en/ref.xml.php",
+                           E_USER_ERROR );
+        }
+        
+        list($parser, $source) = $this->create_parser($source, 
+                $output_encoding, $input_encoding, $detect_encoding);
+        
+        
+        if (!is_resource($parser)) {
+            $this->error( "Failed to create an instance of PHP's XML parser. " .
+                          "http://www.php.net/manual/en/ref.xml.php",
+                          E_USER_ERROR );
+        }
 
-		$this->normalize();
-	}
-	
-	function feed_start_element($p, $element, &$attrs) {
-		$el = $element = strtolower($element);
-		$attrs = array_change_key_case($attrs, CASE_LOWER);
-		
-		// check for a namespace, and split if found
-		$ns	= false;
-		if ( strpos( $element, ':' ) ) {
-			list($ns, $el) = split( ':', $element, 2); 
-		}
-		if ( $ns and $ns != 'rdf' ) {
-			$this->current_namespace = $ns;
-		}
-			
-		# if feed type isn't set, then this is first element of feed
-		# identify feed from root element
-		#
-		if (!isset($this->feed_type) ) {
-			if ( $el == 'rdf' ) {
-				$this->feed_type = RSS;
-				$this->feed_version = '1.0';
-			}
-			elseif ( $el == 'rss' ) {
-				$this->feed_type = RSS;
-				$this->feed_version = $attrs['version'];
-			}
-			elseif ( $el == 'feed' ) {
-				$this->feed_type = ATOM;
-				$this->feed_version = $attrs['version'];
-				$this->inchannel = true;
-			}
-			return;
-		}
-	
-		if ( $el == 'channel' ) 
-		{
-			$this->inchannel = true;
-		}
-		elseif ($el == 'item' or $el == 'entry' ) 
-		{
-			$this->initem = true;
-			if ( isset($attrs['rdf:about']) ) {
-				$this->current_item['about'] = $attrs['rdf:about'];	
-			}
-		}
-		
-		// if we're in the default namespace of an RSS feed,
-		//  record textinput or image fields
-		elseif ( 
-			$this->feed_type == RSS and 
-			$this->current_namespace == '' and 
-			$el == 'textinput' ) 
-		{
-			$this->intextinput = true;
-		}
-		
-		elseif (
-			$this->feed_type == RSS and 
-			$this->current_namespace == '' and 
-			$el == 'image' ) 
-		{
-			$this->inimage = true;
-		}
-		
-		# handle atom content constructs
-		elseif ( $this->feed_type == ATOM and in_array($el, $this->_CONTENT_CONSTRUCTS) )
-		{
-			// avoid clashing w/ RSS mod_content
-			if ($el == 'content' ) {
-				$el = 'atom_content';
-			}
-			
-			$this->incontent = $el;
-			
-			
-		}
-		
-		// if inside an Atom content construct (e.g. content or summary) field treat tags as text
-		elseif ($this->feed_type == ATOM and $this->incontent ) 
-		{
-			// if tags are inlined, then flatten
-			$attrs_str = join(' ', 
-					array_map('map_attrs', 
-					array_keys($attrs), 
-					array_values($attrs) ) );
-			
-			$this->append_content( "<$element $attrs_str>"  );
-					
-			array_unshift( $this->stack, $el );
-		}
-		
-		// Atom support many links per containging element.
-		// Magpie treats link elements of type rel='alternate'
-		// as being equivalent to RSS's simple link element.
-		//
-		elseif ($this->feed_type == ATOM and $el == 'link' ) 
-		{
-			if ( isset($attrs['rel']) and $attrs['rel'] == 'alternate' ) 
-			{
-				$link_el = 'link';
-			}
-			else {
-				$link_el = 'link_' . $attrs['rel'];
-			}
-			
-			$this->append($link_el, $attrs['href']);
-		}
-		// set stack[0] to current element
-		else {
-			array_unshift($this->stack, $el);
-		}
-	}
-	
+        
+        $this->parser = $parser;
+        
+        # pass in parser, and a reference to this object
+        # setup handlers
+        #
+        xml_set_object( $this->parser, $this );
+        xml_set_element_handler($this->parser, 
+                'feed_start_element', 'feed_end_element' );
+                        
+        xml_set_character_data_handler( $this->parser, 'feed_cdata' ); 
+    
+        $status = xml_parse( $this->parser, $source );
+        
+        if (! $status ) {
+            $errorcode = xml_get_error_code( $this->parser );
+            if ( $errorcode != XML_ERROR_NONE ) {
+                $xml_error = xml_error_string( $errorcode );
+                $error_line = xml_get_current_line_number($this->parser);
+                $error_col = xml_get_current_column_number($this->parser);
+                $errormsg = "$xml_error at line $error_line, column $error_col";
 
-	
-	function feed_cdata ($p, $text) {
-		
-		if ($this->feed_type == ATOM and $this->incontent) 
-		{
-			$this->append_content( $text );
-		}
-		else {
-			$current_el = join('_', array_reverse($this->stack));
-			$this->append($current_el, $text);
-		}
-	}
-	
-	function feed_end_element ($p, $el) {
-		$el = strtolower($el);
-		
-		if ( $el == 'item' or $el == 'entry' ) 
-		{
-			$this->items[] = $this->current_item;
-			$this->current_item = array();
-			$this->initem = false;
-		}
-		elseif ($this->feed_type == RSS and $this->current_namespace == '' and $el == 'textinput' ) 
-		{
-			$this->intextinput = false;
-		}
-		elseif ($this->feed_type == RSS and $this->current_namespace == '' and $el == 'image' ) 
-		{
-			$this->inimage = false;
-		}
-		elseif ($this->feed_type == ATOM and in_array($el, $this->_CONTENT_CONSTRUCTS) )
-		{	
-			$this->incontent = false;
-		}
-		elseif ($el == 'channel' or $el == 'feed' ) 
-		{
-			$this->inchannel = false;
-		}
-		elseif ($this->feed_type == ATOM and $this->incontent  ) {
-			// balance tags properly
-			// note:  i don't think this is actually neccessary
-			if ( $this->stack[0] == $el ) 
-			{
-				$this->append_content("</$el>");
-			}
-			else {
-				$this->append_content("<$el />");
-			}
+                $this->error( $errormsg );
+            }
+        }
+        
+        xml_parser_free( $this->parser );
 
-			array_shift( $this->stack );
-		}
-		else {
-			array_shift( $this->stack );
-		}
-		
-		$this->current_namespace = false;
-	}
-	
-	function concat (&$str1, $str2="") {
-		if (!isset($str1) ) {
-			$str1="";
-		}
-		$str1 .= $str2;
-	}
-	
-	
-	
-	function append_content($text) {
-		if ( $this->initem ) {
-			$this->concat( $this->current_item[ $this->incontent ], $text );
-		}
-		elseif ( $this->inchannel ) {
-			$this->concat( $this->channel[ $this->incontent ], $text );
-		}
-	}
-	
-	// smart append - field and namespace aware
-	function append($el, $text) {
-		if (!$el) {
-			return;
-		}
-		if ( $this->current_namespace ) 
-		{
-			if ( $this->initem ) {
-				$this->concat(
-					$this->current_item[ $this->current_namespace ][ $el ], $text);
-			}
-			elseif ($this->inchannel) {
-				$this->concat(
-					$this->channel[ $this->current_namespace][ $el ], $text );
-			}
-			elseif ($this->intextinput) {
-				$this->concat(
-					$this->textinput[ $this->current_namespace][ $el ], $text );
-			}
-			elseif ($this->inimage) {
-				$this->concat(
-					$this->image[ $this->current_namespace ][ $el ], $text );
-			}
-		}
-		else {
-			if ( $this->initem ) {
-				$this->concat(
-					$this->current_item[ $el ], $text);
-			}
-			elseif ($this->intextinput) {
-				$this->concat(
-					$this->textinput[ $el ], $text );
-			}
-			elseif ($this->inimage) {
-				$this->concat(
-					$this->image[ $el ], $text );
-			}
-			elseif ($this->inchannel) {
-				$this->concat(
-					$this->channel[ $el ], $text );
-			}
-			
-		}
-	}
-	
-	function normalize () {
-		// if atom populate rss fields
-		if ( $this->is_atom() ) {
-			$this->channel['descripton'] = $this->channel['tagline'];
-			for ( $i = 0; $i < count($this->items); $i++) {
-				$item = $this->items[$i];
-				if ( isset($item['summary']) )
-					$item['description'] = $item['summary'];
-				if ( isset($item['atom_content']))
-					$item['content']['encoded'] = $item['atom_content'];
-				
-				$this->items[$i] = $item;
-			}		
-		}
-		elseif ( $this->is_rss() ) {
-			$this->channel['tagline'] = $this->channel['description'];
-			for ( $i = 0; $i < count($this->items); $i++) {
-				$item = $this->items[$i];
-				if ( isset($item['description']))
-					$item['summary'] = $item['description'];
-				if ( isset($item['content']['encoded'] ) )
-					$item['atom_content'] = $item['content']['encoded'];
-			
-				$this->items[$i] = $item;
-			}
-		}
-	}
-	
-	function error ($errormsg, $lvl=E_USER_WARNING) {
-		// append PHP's error message if track_errors enabled
-		if ( $php_errormsg ) { 
-			$errormsg .= " ($php_errormsg)";
-		}
-		$this->ERROR = $errormsg;
-		if ( MAGPIE_DEBUG ) {
-			trigger_error( $errormsg, $lvl);		
-		}
-		else {
-			error_log( $errormsg, 0);
-		}
-	}
-	
-	function is_rss () {
-		if ( $this->feed_type == RSS ) {
-			return $this->feed_version;	
-		}
-		else {
-			return false;
-		}
-	}
-	
-	function is_atom() {
-		if ( $this->feed_type == ATOM ) {
-			return $this->feed_version;
-		}
-		else {
-			return false;
-		}
-	}
+        $this->normalize();
+    }
+    
+    function feed_start_element($p, $element, &$attrs) {
+        $el = $element = strtolower($element);
+        $attrs = array_change_key_case($attrs, CASE_LOWER);
+        
+        // check for a namespace, and split if found
+        $ns = false;
+        if ( strpos( $element, ':' ) ) {
+            list($ns, $el) = split( ':', $element, 2); 
+        }
+        if ( $ns and $ns != 'rdf' ) {
+            $this->current_namespace = $ns;
+        }
+            
+        # if feed type isn't set, then this is first element of feed
+        # identify feed from root element
+        #
+        if (!isset($this->feed_type) ) {
+            if ( $el == 'rdf' ) {
+                $this->feed_type = RSS;
+                $this->feed_version = '1.0';
+            }
+            elseif ( $el == 'rss' ) {
+                $this->feed_type = RSS;
+                $this->feed_version = $attrs['version'];
+            }
+            elseif ( $el == 'feed' ) {
+                $this->feed_type = ATOM;
+                $this->feed_version = $attrs['version'];
+                $this->inchannel = true;
+            }
+            return;
+        }
+    
+        if ( $el == 'channel' ) 
+        {
+            $this->inchannel = true;
+        }
+        elseif ($el == 'item' or $el == 'entry' ) 
+        {
+            $this->initem = true;
+            if ( isset($attrs['rdf:about']) ) {
+                $this->current_item['about'] = $attrs['rdf:about']; 
+            }
+        }
+        
+        // if we're in the default namespace of an RSS feed,
+        //  record textinput or image fields
+        elseif ( 
+            $this->feed_type == RSS and 
+            $this->current_namespace == '' and 
+            $el == 'textinput' ) 
+        {
+            $this->intextinput = true;
+        }
+        
+        elseif (
+            $this->feed_type == RSS and 
+            $this->current_namespace == '' and 
+            $el == 'image' ) 
+        {
+            $this->inimage = true;
+        }
+        
+        # handle atom content constructs
+        elseif ( $this->feed_type == ATOM and in_array($el, $this->_CONTENT_CONSTRUCTS) )
+        {
+            // avoid clashing w/ RSS mod_content
+            if ($el == 'content' ) {
+                $el = 'atom_content';
+            }
+            
+            $this->incontent = $el;
+            
+            
+        }
+        
+        // if inside an Atom content construct (e.g. content or summary) field treat tags as text
+        elseif ($this->feed_type == ATOM and $this->incontent ) 
+        {
+            // if tags are inlined, then flatten
+            $attrs_str = join(' ', 
+                    array_map('map_attrs', 
+                    array_keys($attrs), 
+                    array_values($attrs) ) );
+            
+            $this->append_content( "<$element $attrs_str>"  );
+                    
+            array_unshift( $this->stack, $el );
+        }
+        
+        // Atom support many links per containging element.
+        // Magpie treats link elements of type rel='alternate'
+        // as being equivalent to RSS's simple link element.
+        //
+        elseif ($this->feed_type == ATOM and $el == 'link' ) 
+        {
+            if ( isset($attrs['rel']) and $attrs['rel'] == 'alternate' ) 
+            {
+                $link_el = 'link';
+            }
+            else {
+                $link_el = 'link_' . $attrs['rel'];
+            }
+            
+            $this->append($link_el, $attrs['href']);
+        }
+        // set stack[0] to current element
+        else {
+            array_unshift($this->stack, $el);
+        }
+    }
+    
 
-/*======================================================================*\
-	EVERYTHING BELOW HERE IS FOR DEBUGGING PURPOSES
-\*======================================================================*/
-	function show_list () {
-		echo "<ol>\n";
-		foreach ($this->items as $item) {
-			echo "<li>", $this->show_item( $item );
-		}
-		echo "</ol>";
-	}
-	
-	function show_channel () {
-		echo "channel:<br>";
-		echo "<ul>";
-		while ( list($key, $value) = each( $this->channel ) ) {
-			echo "<li> $key: $value";
-		}
-		echo "</ul>";
-	}
-	
-	function show_item ($item) {
-		echo "item: $item[title]";
-		echo "<ul>";
-		while ( list($key, $value) = each($item) ) {
-			if ( is_array($value) ) {
-				echo "<br><b>$key</b>";
-				echo "<ul>";
-				while ( list( $ns_key, $ns_value) = each( $value ) ) {
-					echo "<li>$ns_key: $ns_value";
-				}
-				echo "</ul>";
-			}
-			else {
-				echo "<li> $key: $value";
-			}
-		}
-		echo "</ul>";
-	}
+    
+    function feed_cdata ($p, $text) {
+        
+        if ($this->feed_type == ATOM and $this->incontent) 
+        {
+            $this->append_content( $text );
+        }
+        else {
+            $current_el = join('_', array_reverse($this->stack));
+            $this->append($current_el, $text);
+        }
+    }
+    
+    function feed_end_element ($p, $el) {
+        $el = strtolower($el);
+        
+        if ( $el == 'item' or $el == 'entry' ) 
+        {
+            $this->items[] = $this->current_item;
+            $this->current_item = array();
+            $this->initem = false;
+        }
+        elseif ($this->feed_type == RSS and $this->current_namespace == '' and $el == 'textinput' ) 
+        {
+            $this->intextinput = false;
+        }
+        elseif ($this->feed_type == RSS and $this->current_namespace == '' and $el == 'image' ) 
+        {
+            $this->inimage = false;
+        }
+        elseif ($this->feed_type == ATOM and in_array($el, $this->_CONTENT_CONSTRUCTS) )
+        {   
+            $this->incontent = false;
+        }
+        elseif ($el == 'channel' or $el == 'feed' ) 
+        {
+            $this->inchannel = false;
+        }
+        elseif ($this->feed_type == ATOM and $this->incontent  ) {
+            // balance tags properly
+            // note:  i don't think this is actually neccessary
+            if ( $this->stack[0] == $el ) 
+            {
+                $this->append_content("</$el>");
+            }
+            else {
+                $this->append_content("<$el />");
+            }
 
-/*======================================================================*\
-	END DEBUGGING FUNCTIONS	
-\*======================================================================*/
-	
+            array_shift( $this->stack );
+        }
+        else {
+            array_shift( $this->stack );
+        }
+        
+        $this->current_namespace = false;
+    }
+    
+    function concat (&$str1, $str2="") {
+        if (!isset($str1) ) {
+            $str1="";
+        }
+        $str1 .= $str2;
+    }
+    
+    
+    
+    function append_content($text) {
+        if ( $this->initem ) {
+            $this->concat( $this->current_item[ $this->incontent ], $text );
+        }
+        elseif ( $this->inchannel ) {
+            $this->concat( $this->channel[ $this->incontent ], $text );
+        }
+    }
+    
+    // smart append - field and namespace aware
+    function append($el, $text) {
+        if (!$el) {
+            return;
+        }
+        if ( $this->current_namespace ) 
+        {
+            if ( $this->initem ) {
+                $this->concat(
+                    $this->current_item[ $this->current_namespace ][ $el ], $text);
+            }
+            elseif ($this->inchannel) {
+                $this->concat(
+                    $this->channel[ $this->current_namespace][ $el ], $text );
+            }
+            elseif ($this->intextinput) {
+                $this->concat(
+                    $this->textinput[ $this->current_namespace][ $el ], $text );
+            }
+            elseif ($this->inimage) {
+                $this->concat(
+                    $this->image[ $this->current_namespace ][ $el ], $text );
+            }
+        }
+        else {
+            if ( $this->initem ) {
+                $this->concat(
+                    $this->current_item[ $el ], $text);
+            }
+            elseif ($this->intextinput) {
+                $this->concat(
+                    $this->textinput[ $el ], $text );
+            }
+            elseif ($this->inimage) {
+                $this->concat(
+                    $this->image[ $el ], $text );
+            }
+            elseif ($this->inchannel) {
+                $this->concat(
+                    $this->channel[ $el ], $text );
+            }
+            
+        }
+    }
+    
+    function normalize () {
+        // if atom populate rss fields
+        if ( $this->is_atom() ) {
+            $this->channel['description'] = $this->channel['tagline'];
+            for ( $i = 0; $i < count($this->items); $i++) {
+                $item = $this->items[$i];
+                if ( isset($item['summary']) )
+                    $item['description'] = $item['summary'];
+                if ( isset($item['atom_content']))
+                    $item['content']['encoded'] = $item['atom_content'];
+                
+                $atom_date = (isset($item['issued']) ) ? $item['issued'] : $item['modified'];
+                if ( $atom_date ) {
+                    $epoch = @parse_w3cdtf($item['modified']);
+                    if ($epoch and $epoch > 0) {
+                        $item['date_timestamp'] = $epoch;
+                    }
+                }
+                
+                $this->items[$i] = $item;
+            }       
+        }
+        elseif ( $this->is_rss() ) {
+            $this->channel['tagline'] = $this->channel['description'];
+            for ( $i = 0; $i < count($this->items); $i++) {
+                $item = $this->items[$i];
+                if ( isset($item['description']))
+                    $item['summary'] = $item['description'];
+                if ( isset($item['content']['encoded'] ) )
+                    $item['atom_content'] = $item['content']['encoded'];
+                
+                if ( $this->is_rss() == '1.0' and isset($item['dc']['date']) ) {
+                    $epoch = @parse_w3cdtf($item['dc']['date']);
+                    if ($epoch and $epoch > 0) {
+                        $item['date_timestamp'] = $epoch;
+                    }
+                }
+                elseif ( isset($item['pubdate']) ) {
+                    $epoch = @strtotime($item['pubdate']);
+                    if ($epoch > 0) {
+                        $item['date_timestamp'] = $epoch;
+                    }
+                }
+                
+                $this->items[$i] = $item;
+            }
+        }
+    }
+    
+    
+    function is_rss () {
+        if ( $this->feed_type == RSS ) {
+            return $this->feed_version; 
+        }
+        else {
+            return false;
+        }
+    }
+    
+    function is_atom() {
+        if ( $this->feed_type == ATOM ) {
+            return $this->feed_version;
+        }
+        else {
+            return false;
+        }
+    }
 
+    /**
+    * return XML parser, and possibly re-encoded source
+    *
+    */
+    function create_parser($source, $out_enc, $in_enc, $detect) {
+        if ( substr(phpversion(),0,1) == 5) {
+            $parser = $this->php5_create_parser($in_enc, $detect);
+        }
+        else {
+            list($parser, $source) = $this->php4_create_parser($source, $in_enc, $detect);
+        }
+        if ($out_enc) {
+            $this->encoding = $out_enc;
+            xml_parser_set_option($parser, XML_OPTION_TARGET_ENCODING, $out_enc);
+        }
+        
+        return array($parser, $source);
+    }
+    
+    /**
+    * Instantiate an XML parser under PHP5
+    *
+    * PHP5 will do a fine job of detecting input encoding
+    * if passed an empty string as the encoding. 
+    *
+    * All hail libxml2!
+    *
+    */
+    function php5_create_parser($in_enc, $detect) {
+        // by default php5 does a fine job of detecting input encodings
+        if(!$detect && $in_enc) {
+            return xml_parser_create($in_enc);
+        }
+        else {
+            return xml_parser_create('');
+        }
+    }
+    
+    /**
+    * Instaniate an XML parser under PHP4
+    *
+    * Unfortunately PHP4's support for character encodings
+    * and especially XML and character encodings sucks.  As
+    * long as the documents you parse only contain characters
+    * from the ISO-8859-1 character set (a superset of ASCII,
+    * and a subset of UTF-8) you're fine.  However once you
+    * step out of that comfy little world things get mad, bad,
+    * and dangerous to know.
+    *
+    * The following code is based on SJM's work with FoF
+    * @see http://minutillo.com/steve/weblog/2004/6/17/php-xml-and-character-encodings-a-tale-of-sadness-rage-and-data-loss
+    *
+    */
+    function php4_create_parser($source, $in_enc, $detect) {
+        if ( !$detect ) {
+            return array(xml_parser_create($in_enc), $source);
+        }
+        
+        if (!$in_enc) {
+            if (preg_match('/<?xml.*encoding=[\'"](.*?)[\'"].*?>/m', $source, $m)) {
+                $in_enc = strtoupper($m[1]);
+                $this->source_encoding = $in_enc;
+            }
+            else {
+                $in_enc = 'UTF-8';
+            }
+        }
+        
+        if ($this->known_encoding($in_enc)) {
+            return array(xml_parser_create($in_enc), $source);
+        }
+        
+        // the dectected encoding is not one of the simple encodings PHP knows
+        
+        // attempt to use the iconv extension to
+        // cast the XML to a known encoding
+        // @see http://php.net/iconv
+       
+        if (function_exists('iconv'))  {
+            $encoded_source = iconv($in_enc,'UTF-8', $source);
+            if ($encoded_source) {
+                return array(xml_parser_create('UTF-8'), $encoded_source);
+            }
+        }
+        
+        // iconv didn't work, try mb_convert_encoding
+        // @see http://php.net/mbstring
+        if(function_exists('mb_convert_encoding')) {
+            $encoded_source = mb_convert_encoding($source, 'UTF-8', $in_enc );
+            if ($encoded_source) {
+                return array(xml_parser_create('UTF-8'), $encoded_source);
+            }
+        }
+        
+        // else 
+        $this->error("Feed is in an unsupported character encoding. ($in_enc) " .
+                     "You may see strange artifacts, and mangled characters.",
+                     E_USER_NOTICE);
+            
+        return array(xml_parser_create(), $source);
+    }
+    
+    function known_encoding($enc) {
+        $enc = strtoupper($enc);
+        if ( in_array($enc, $this->_KNOWN_ENCODINGS) ) {
+            return $enc;
+        }
+        else {
+            return false;
+        }
+    }
 
-} # end class RSS
+    function error ($errormsg, $lvl=E_USER_WARNING) {
+        // append PHP's error message if track_errors enabled
+        if ( $php_errormsg ) { 
+            $errormsg .= " ($php_errormsg)";
+        }
+        if ( MAGPIE_DEBUG ) {
+            trigger_error( $errormsg, $lvl);        
+        }
+        else {
+            error_log( $errormsg, 0);
+        }
+        
+        $notices = E_USER_NOTICE|E_NOTICE;
+        if ( $lvl&$notices ) {
+            $this->WARNING = $errormsg;
+        } else {
+            $this->ERROR = $errormsg;
+        }
+    }
+    
+    
+} // end class RSS
 
 function map_attrs($k, $v) {
-	return "$k=\"$v\"";
+    return "$k=\"$v\"";
 }