Posted By

iroybot on 11/06/11

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cache

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Last Edited at 11/06/11 07:00am

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Simplepie with fixed Cache directory handling

/ Published in: PHP

Simplepie per default uses relative paths to generate the cache filename. Whenever I use Simplepie I run into the same problem, that the cache directory can't be located. This is why I modify the file everytime. Here's my version (with a hardcoded path which you'll want to replace with your desired location).

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<?php
/**
 * SimplePie
 *
 * A PHP-Based RSS and Atom Feed Framework.
 * Takes the hard work out of managing a complete RSS/Atom solution.
 *
 * Copyright (c) 2004-2010, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 * 	* Redistributions of source code must retain the above copyright notice, this list of
 * 	  conditions and the following disclaimer.
 *
 * 	* Redistributions in binary form must reproduce the above copyright notice, this list
 * 	  of conditions and the following disclaimer in the documentation and/or other materials
 * 	  provided with the distribution.
 *
 * 	* Neither the name of the SimplePie Team nor the names of its contributors may be used
 * 	  to endorse or promote products derived from this software without specific prior
 * 	  written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
 * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @package SimplePie
 * @version 1.3-dev
 * @copyright 2004-2010 Ryan Parman, Geoffrey Sneddon, Ryan McCue
 * @author Ryan Parman
 * @author Geoffrey Sneddon
 * @author Ryan McCue
 * @link http://simplepie.org/ SimplePie
 * @license http://www.opensource.org/licenses/bsd-license.php BSD License
 * @todo phpDoc comments
 */

class SimplePie extends SimplePie_Core
{

}

class SimplePie_Author
{
	var $name;
	var $link;
	var $email;

public function __construct($name = null, $link = null, $email = null)
	{
		$this->name = $name;
		$this->link = $link;
		$this->email = $email;
	}

public function __toString()
	{
				return md5(serialize($this));
	}

public function get_name()
	{
		if ($this->name !== null)
		{
			return $this->name;
		}
		else
		{
			return null;
		}
	}

public function get_link()
	{
		if ($this->link !== null)
		{
			return $this->link;
		}
		else
		{
			return null;
		}
	}

public function get_email()
	{
		if ($this->email !== null)
		{
			return $this->email;
		}
		else
		{
			return null;
		}
	}
}

class SimplePie_Cache_DB
{
	public function prepare_simplepie_object_for_cache($data)
	{
		$items = $data->get_items();
		$items_by_id = array();

if (!empty($items))
		{
			foreach ($items as $item)
			{
				$items_by_id[$item->get_id()] = $item;
			}

if (count($items_by_id) !== count($items))
			{
				$items_by_id = array();
				foreach ($items as $item)
				{
					$items_by_id[$item->get_id(true)] = $item;
				}
			}

if (isset($data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]))
			{
				$channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0];
			}
			elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]))
			{
				$channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0];
			}
			elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]))
			{
				$channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0];
			}
			elseif (isset($data->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['channel'][0]))
			{
				$channel =& $data->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['channel'][0];
			}
			else
			{
				$channel = null;
			}

if ($channel !== null)
			{
				if (isset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry']))
				{
					unset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry']);
				}
				if (isset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['entry']))
				{
					unset($channel['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['entry']);
				}
				if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item']))
				{
					unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item']);
				}
				if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item']))
				{
					unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item']);
				}
				if (isset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_20]['item']))
				{
					unset($channel['child'][SIMPLEPIE_NAMESPACE_RSS_20]['item']);
				}
			}
			if (isset($data->data['items']))
			{
				unset($data->data['items']);
			}
			if (isset($data->data['ordered_items']))
			{
				unset($data->data['ordered_items']);
			}
		}
		return array(serialize($data->data), $items_by_id);
	}
}

class SimplePie_Cache_File
{
	var $location;
	var $filename;
	var $extension;
	var $name;

public function __construct($location, $filename, $extension)
	{
		if (substr($location,0,1)!=="/") $location = "/$location";
		$this->location = $_SERVER["DOCUMENT_ROOT"].$location;
		$this->filename = $filename;
		$this->extension = $extension;
		$this->name = "$this->location/$this->filename.$this->extension";
	}

public function save($data)
	{
		if (file_exists($this->name) && is_writeable($this->name) || file_exists($this->location) && is_writeable($this->location))
		{
			if (is_a($data, 'SimplePie'))
			{
				$data = $data->data;
			}

$data = serialize($data);
			return (bool) file_put_contents($this->name, $data);
		}
		return false;
	}

public function load()
	{
		if (file_exists($this->name) && is_readable($this->name))
		{
			return unserialize(file_get_contents($this->name));
		}
		return false;
	}

public function mtime()
	{
		if (file_exists($this->name))
		{
			return filemtime($this->name);
		}
		return false;
	}

public function touch()
	{
		if (file_exists($this->name))
		{
			return touch($this->name);
		}
		return false;
	}

public function unlink()
	{
		if (file_exists($this->name))
		{
			return unlink($this->name);
		}
		return false;
	}
}

class SimplePie_Cache_MySQL extends SimplePie_Cache_DB
{
	var $mysql;
	var $options;
	var $id;

public function __construct($mysql_location, $name, $extension)
	{
		$host = $mysql_location->get_host();
		if (stripos($host, 'unix(') === 0 && substr($host, -1) === ')')
		{
			$server = ':' . substr($host, 5, -1);
		}
		else
		{
			$server = $host;
			if ($mysql_location->get_port() !== null)
			{
				$server .= ':' . $mysql_location->get_port();
			}
		}

if (strpos($mysql_location->get_userinfo(), ':') !== false)
		{
			list($username, $password) = explode(':', $mysql_location->get_userinfo(), 2);
		}
		else
		{
			$username = $mysql_location->get_userinfo();
			$password = null;
		}

if ($this->mysql = mysql_connect($server, $username, $password))
		{
			$this->id = $name . $extension;
			$this->options = SimplePie_Misc::parse_str($mysql_location->get_query());
			if (!isset($this->options['prefix'][0]))
			{
				$this->options['prefix'][0] = '';
			}

if (mysql_select_db(ltrim($mysql_location->get_path(), '/'))
				&& mysql_query('SET NAMES utf8')
				&& ($query = mysql_unbuffered_query('SHOW TABLES')))
			{
				$db = array();
				while ($row = mysql_fetch_row($query))
				{
					$db[] = $row[0];
				}

if (!in_array($this->options['prefix'][0] . 'cache_data', $db))
				{
					if (!mysql_query('CREATE TABLE `' . $this->options['prefix'][0] . 'cache_data` (`id` TEXT CHARACTER SET utf8 NOT NULL, `items` SMALLINT NOT NULL DEFAULT 0, `data` BLOB NOT NULL, `mtime` INT UNSIGNED NOT NULL, UNIQUE (`id`(125)))'))
					{
						$this->mysql = null;
					}
				}

if (!in_array($this->options['prefix'][0] . 'items', $db))
				{
					if (!mysql_query('CREATE TABLE `' . $this->options['prefix'][0] . 'items` (`feed_id` TEXT CHARACTER SET utf8 NOT NULL, `id` TEXT CHARACTER SET utf8 NOT NULL, `data` TEXT CHARACTER SET utf8 NOT NULL, `posted` INT UNSIGNED NOT NULL, INDEX `feed_id` (`feed_id`(125)))'))
					{
						$this->mysql = null;
					}
				}
			}
			else
			{
				$this->mysql = null;
			}
		}
	}

public function save($data)
	{
		if ($this->mysql)
		{
			$feed_id = "'" . mysql_real_escape_string($this->id) . "'";

if (is_a($data, 'SimplePie'))
			{
				$data = clone $data;

$prepared = $this->prepare_simplepie_object_for_cache($data);
				
				if ($query = mysql_query('SELECT `id` FROM `' . $this->options['prefix'][0] . 'cache_data` WHERE `id` = ' . $feed_id, $this->mysql))
				{
					if (mysql_num_rows($query))
					{
						$items = count($prepared[1]);
						if ($items)
						{
							$sql = 'UPDATE `' . $this->options['prefix'][0] . 'cache_data` SET `items` = ' . $items . ', `data` = \'' . mysql_real_escape_string($prepared[0]) . '\', `mtime` = ' . time() . ' WHERE `id` = ' . $feed_id;
						}
						else
						{
							$sql = 'UPDATE `' . $this->options['prefix'][0] . 'cache_data` SET `data` = \'' . mysql_real_escape_string($prepared[0]) . '\', `mtime` = ' . time() . ' WHERE `id` = ' . $feed_id;
						}

if (!mysql_query($sql, $this->mysql))
						{
							return false;
						}
					}
					elseif (!mysql_query('INSERT INTO `' . $this->options['prefix'][0] . 'cache_data` (`id`, `items`, `data`, `mtime`) VALUES(' . $feed_id . ', ' . count($prepared[1]) . ', \'' . mysql_real_escape_string($prepared[0]) . '\', ' . time() . ')', $this->mysql))
					{
						return false;
					}

$ids = array_keys($prepared[1]);
					if (!empty($ids))
					{
						foreach ($ids as $id)
						{
							$database_ids[] = mysql_real_escape_string($id);
						}

if ($query = mysql_unbuffered_query('SELECT `id` FROM `' . $this->options['prefix'][0] . 'items` WHERE `id` = \'' . implode('\' OR `id` = \'', $database_ids) . '\' AND `feed_id` = ' . $feed_id, $this->mysql))
						{
							$existing_ids = array();
							while ($row = mysql_fetch_row($query))
							{
								$existing_ids[] = $row[0];
							}

$new_ids = array_diff($ids, $existing_ids);

foreach ($new_ids as $new_id)
							{
								if (!($date = $prepared[1][$new_id]->get_date('U')))
								{
									$date = time();
								}

if (!mysql_query('INSERT INTO `' . $this->options['prefix'][0] . 'items` (`feed_id`, `id`, `data`, `posted`) VALUES(' . $feed_id . ', \'' . mysql_real_escape_string($new_id) . '\', \'' . mysql_real_escape_string(serialize($prepared[1][$new_id]->data)) . '\', ' . $date . ')', $this->mysql))
								{
									return false;
								}
							}
							return true;
						}
					}
					else
					{
						return true;
					}
				}
			}
			elseif ($query = mysql_query('SELECT `id` FROM `' . $this->options['prefix'][0] . 'cache_data` WHERE `id` = ' . $feed_id, $this->mysql))
			{
				if (mysql_num_rows($query))
				{
					if (mysql_query('UPDATE `' . $this->options['prefix'][0] . 'cache_data` SET `items` = 0, `data` = \'' . mysql_real_escape_string(serialize($data)) . '\', `mtime` = ' . time() . ' WHERE `id` = ' . $feed_id, $this->mysql))
					{
						return true;
					}
				}
				elseif (mysql_query('INSERT INTO `' . $this->options['prefix'][0] . 'cache_data` (`id`, `items`, `data`, `mtime`) VALUES(\'' . mysql_real_escape_string($this->id) . '\', 0, \'' . mysql_real_escape_string(serialize($data)) . '\', ' . time() . ')', $this->mysql))
				{
					return true;
				}
			}
		}
		return false;
	}

public function load()
	{
		if ($this->mysql && ($query = mysql_query('SELECT `items`, `data` FROM `' . $this->options['prefix'][0] . 'cache_data` WHERE `id` = \'' . mysql_real_escape_string($this->id) . "'", $this->mysql)) && ($row = mysql_fetch_row($query)))
		{
			$data = unserialize($row[1]);

if (isset($this->options['items'][0]))
			{
				$items = (int) $this->options['items'][0];
			}
			else
			{
				$items = (int) $row[0];
			}

if ($items !== 0)
			{
				if (isset($data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]))
				{
					$feed =& $data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0];
				}
				elseif (isset($data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]))
				{
					$feed =& $data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0];
				}
				elseif (isset($data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]))
				{
					$feed =& $data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0];
				}
				elseif (isset($data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]))
				{
					$feed =& $data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0];
				}
				else
				{
					$feed = null;
				}

if ($feed !== null)
				{
					$sql = 'SELECT `data` FROM `' . $this->options['prefix'][0] . 'items` WHERE `feed_id` = \'' . mysql_real_escape_string($this->id) . '\' ORDER BY `posted` DESC';
					if ($items > 0)
					{
						$sql .= ' LIMIT ' . $items;
					}

if ($query = mysql_unbuffered_query($sql, $this->mysql))
					{
						while ($row = mysql_fetch_row($query))
						{
							$feed['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['entry'][] = unserialize($row[0]);
						}
					}
					else
					{
						return false;
					}
				}
			}
			return $data;
		}
		return false;
	}

public function mtime()
	{
		if ($this->mysql && ($query = mysql_query('SELECT `mtime` FROM `' . $this->options['prefix'][0] . 'cache_data` WHERE `id` = \'' . mysql_real_escape_string($this->id) . "'", $this->mysql)) && ($row = mysql_fetch_row($query)))
		{
			return $row[0];
		}
		else
		{
			return false;
		}
	}

public function touch()
	{
		if ($this->mysql && ($query = mysql_query('UPDATE `' . $this->options['prefix'][0] . 'cache_data` SET `mtime` = ' . time() . ' WHERE `id` = \'' . mysql_real_escape_string($this->id) . "'", $this->mysql)) && mysql_affected_rows($this->mysql))
		{
			return true;
		}
		else
		{
			return false;
		}
	}

public function unlink()
	{
		if ($this->mysql && ($query = mysql_query('DELETE FROM `' . $this->options['prefix'][0] . 'cache_data` WHERE `id` = \'' . mysql_real_escape_string($this->id) . "'", $this->mysql)) && ($query2 = mysql_query('DELETE FROM `' . $this->options['prefix'][0] . 'items` WHERE `feed_id` = \'' . mysql_real_escape_string($this->id) . "'", $this->mysql)))
		{
			return true;
		}
		else
		{
			return false;
		}
	}
}

class SimplePie_Cache
{

private function __construct()
	{
		trigger_error('Please call SimplePie_Cache::create() instead of the constructor', E_USER_ERROR);
	}

public static function create($location, $filename, $extension)
	{
		$location_iri = new SimplePie_IRI($location);
		switch ($location_iri->get_scheme())
		{
			case 'mysql':
				if (extension_loaded('mysql'))
				{
					return new SimplePie_Cache_MySQL($location_iri, $filename, $extension);
				}
				break;

default:
				return new SimplePie_Cache_File($location, $filename, $extension);
		}
	}
}

class SimplePie_Caption
{
	var $type;
	var $lang;
	var $startTime;
	var $endTime;
	var $text;

public function __construct($type = null, $lang = null, $startTime = null, $endTime = null, $text = null)
	{
		$this->type = $type;
		$this->lang = $lang;
		$this->startTime = $startTime;
		$this->endTime = $endTime;
		$this->text = $text;
	}

public function __toString()
	{
				return md5(serialize($this));
	}

public function get_endtime()
	{
		if ($this->endTime !== null)
		{
			return $this->endTime;
		}
		else
		{
			return null;
		}
	}

public function get_language()
	{
		if ($this->lang !== null)
		{
			return $this->lang;
		}
		else
		{
			return null;
		}
	}

public function get_starttime()
	{
		if ($this->startTime !== null)
		{
			return $this->startTime;
		}
		else
		{
			return null;
		}
	}

public function get_text()
	{
		if ($this->text !== null)
		{
			return $this->text;
		}
		else
		{
			return null;
		}
	}

public function get_type()
	{
		if ($this->type !== null)
		{
			return $this->type;
		}
		else
		{
			return null;
		}
	}
}

class SimplePie_Category
{
	var $term;
	var $scheme;
	var $label;

public function __construct($term = null, $scheme = null, $label = null)
	{
		$this->term = $term;
		$this->scheme = $scheme;
		$this->label = $label;
	}

public function __toString()
	{
				return md5(serialize($this));
	}

public function get_term()
	{
		if ($this->term !== null)
		{
			return $this->term;
		}
		else
		{
			return null;
		}
	}

public function get_scheme()
	{
		if ($this->scheme !== null)
		{
			return $this->scheme;
		}
		else
		{
			return null;
		}
	}

public function get_label()
	{
		if ($this->label !== null)
		{
			return $this->label;
		}
		else
		{
			return $this->get_term();
		}
	}
}

class SimplePie_Content_Type_Sniffer
{

var $file;

public function __construct($file)
	{
		$this->file = $file;
	}

public function get_type()
	{
		if (isset($this->file->headers['content-type']))
		{
			if (!isset($this->file->headers['content-encoding'])
				&& ($this->file->headers['content-type'] === 'text/plain'
					|| $this->file->headers['content-type'] === 'text/plain; charset=ISO-8859-1'
					|| $this->file->headers['content-type'] === 'text/plain; charset=iso-8859-1'))
			{
				return $this->text_or_binary();
			}

if (($pos = strpos($this->file->headers['content-type'], ';')) !== false)
			{
				$official = substr($this->file->headers['content-type'], 0, $pos);
			}
			else
			{
				$official = $this->file->headers['content-type'];
			}
			$official = strtolower($official);

if ($official === 'unknown/unknown'
				|| $official === 'application/unknown')
			{
				return $this->unknown();
			}
			elseif (substr($official, -4) === '+xml'
				|| $official === 'text/xml'
				|| $official === 'application/xml')
			{
				return $official;
			}
			elseif (substr($official, 0, 6) === 'image/')
			{
				if ($return = $this->image())
				{
					return $return;
				}
				else
				{
					return $official;
				}
			}
			elseif ($official === 'text/html')
			{
				return $this->feed_or_html();
			}
			else
			{
				return $official;
			}
		}
		else
		{
			return $this->unknown();
		}
	}

public function text_or_binary()
	{
		if (substr($this->file->body, 0, 2) === "\xFE\xFF"
			|| substr($this->file->body, 0, 2) === "\xFF\xFE"
			|| substr($this->file->body, 0, 4) === "\x00\x00\xFE\xFF"
			|| substr($this->file->body, 0, 3) === "\xEF\xBB\xBF")
		{
			return 'text/plain';
		}
		elseif (preg_match('/[\x00-\x08\x0E-\x1A\x1C-\x1F]/', $this->file->body))
		{
			return 'application/octect-stream';
		}
		else
		{
			return 'text/plain';
		}
	}

public function unknown()
	{
		$ws = strspn($this->file->body, "\x09\x0A\x0B\x0C\x0D\x20");
		if (strtolower(substr($this->file->body, $ws, 14)) === '<!doctype html'
			|| strtolower(substr($this->file->body, $ws, 5)) === '<html'
			|| strtolower(substr($this->file->body, $ws, 7)) === '<script')
		{
			return 'text/html';
		}
		elseif (substr($this->file->body, 0, 5) === '%PDF-')
		{
			return 'application/pdf';
		}
		elseif (substr($this->file->body, 0, 11) === '%!PS-Adobe-')
		{
			return 'application/postscript';
		}
		elseif (substr($this->file->body, 0, 6) === 'GIF87a'
			|| substr($this->file->body, 0, 6) === 'GIF89a')
		{
			return 'image/gif';
		}
		elseif (substr($this->file->body, 0, 8) === "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A")
		{
			return 'image/png';
		}
		elseif (substr($this->file->body, 0, 3) === "\xFF\xD8\xFF")
		{
			return 'image/jpeg';
		}
		elseif (substr($this->file->body, 0, 2) === "\x42\x4D")
		{
			return 'image/bmp';
		}
		else
		{
			return $this->text_or_binary();
		}
	}

public function image()
	{
		if (substr($this->file->body, 0, 6) === 'GIF87a'
			|| substr($this->file->body, 0, 6) === 'GIF89a')
		{
			return 'image/gif';
		}
		elseif (substr($this->file->body, 0, 8) === "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A")
		{
			return 'image/png';
		}
		elseif (substr($this->file->body, 0, 3) === "\xFF\xD8\xFF")
		{
			return 'image/jpeg';
		}
		elseif (substr($this->file->body, 0, 2) === "\x42\x4D")
		{
			return 'image/bmp';
		}
		else
		{
			return false;
		}
	}

public function feed_or_html()
	{
		$len = strlen($this->file->body);
		$pos = strspn($this->file->body, "\x09\x0A\x0D\x20");

while ($pos < $len)
		{
			switch ($this->file->body[$pos])
			{
				case "\x09":
				case "\x0A":
				case "\x0D":
				case "\x20":
					$pos += strspn($this->file->body, "\x09\x0A\x0D\x20", $pos);
					continue 2;

case '<':
					$pos++;
					break;

default:
					return 'text/html';
			}

if (substr($this->file->body, $pos, 3) === '!--')
			{
				$pos += 3;
				if ($pos < $len && ($pos = strpos($this->file->body, '-->', $pos)) !== false)
				{
					$pos += 3;
				}
				else
				{
					return 'text/html';
				}
			}
			elseif (substr($this->file->body, $pos, 1) === '!')
			{
				if ($pos < $len && ($pos = strpos($this->file->body, '>', $pos)) !== false)
				{
					$pos++;
				}
				else
				{
					return 'text/html';
				}
			}
			elseif (substr($this->file->body, $pos, 1) === '?')
			{
				if ($pos < $len && ($pos = strpos($this->file->body, '?>', $pos)) !== false)
				{
					$pos += 2;
				}
				else
				{
					return 'text/html';
				}
			}
			elseif (substr($this->file->body, $pos, 3) === 'rss'
				|| substr($this->file->body, $pos, 7) === 'rdf:RDF')
			{
				return 'application/rss+xml';
			}
			elseif (substr($this->file->body, $pos, 4) === 'feed')
			{
				return 'application/atom+xml';
			}
			else
			{
				return 'text/html';
			}
		}

return 'text/html';
	}
}

class SimplePie_Copyright
{
	var $url;
	var $label;

public function __construct($url = null, $label = null)
	{
		$this->url = $url;
		$this->label = $label;
	}

public function __toString()
	{
				return md5(serialize($this));
	}

public function get_url()
	{
		if ($this->url !== null)
		{
			return $this->url;
		}
		else
		{
			return null;
		}
	}

public function get_attribution()
	{
		if ($this->label !== null)
		{
			return $this->label;
		}
		else
		{
			return null;
		}
	}
}

define('SIMPLEPIE_NAME', 'SimplePie');

define('SIMPLEPIE_VERSION', '1.3-dev');

define('SIMPLEPIE_BUILD', gmdate('YmdHis', SimplePie_Misc::parse_date(substr('$Date$', 7, 25)) ? SimplePie_Misc::parse_date(substr('$Date$', 7, 25)) : filemtime(__FILE__)));

define('SIMPLEPIE_URL', 'http://simplepie.org');

define('SIMPLEPIE_USERAGENT', SIMPLEPIE_NAME . '/' . SIMPLEPIE_VERSION . ' (Feed Parser; ' . SIMPLEPIE_URL . '; Allow like Gecko) Build/' . SIMPLEPIE_BUILD);

define('SIMPLEPIE_LINKBACK', '<a href="' . SIMPLEPIE_URL . '" title="' . SIMPLEPIE_NAME . ' ' . SIMPLEPIE_VERSION . '">' . SIMPLEPIE_NAME . '</a>');

define('SIMPLEPIE_LOCATOR_NONE', 0);

define('SIMPLEPIE_LOCATOR_AUTODISCOVERY', 1);

define('SIMPLEPIE_LOCATOR_LOCAL_EXTENSION', 2);

define('SIMPLEPIE_LOCATOR_LOCAL_BODY', 4);

define('SIMPLEPIE_LOCATOR_REMOTE_EXTENSION', 8);

define('SIMPLEPIE_LOCATOR_REMOTE_BODY', 16);

define('SIMPLEPIE_LOCATOR_ALL', 31);

define('SIMPLEPIE_TYPE_NONE', 0);

define('SIMPLEPIE_TYPE_RSS_090', 1);

define('SIMPLEPIE_TYPE_RSS_091_NETSCAPE', 2);

define('SIMPLEPIE_TYPE_RSS_091_USERLAND', 4);

define('SIMPLEPIE_TYPE_RSS_091', 6);

define('SIMPLEPIE_TYPE_RSS_092', 8);

define('SIMPLEPIE_TYPE_RSS_093', 16);

define('SIMPLEPIE_TYPE_RSS_094', 32);

define('SIMPLEPIE_TYPE_RSS_10', 64);

define('SIMPLEPIE_TYPE_RSS_20', 128);

define('SIMPLEPIE_TYPE_RSS_RDF', 65);

define('SIMPLEPIE_TYPE_RSS_SYNDICATION', 190);

define('SIMPLEPIE_TYPE_RSS_ALL', 255);

define('SIMPLEPIE_TYPE_ATOM_03', 256);

define('SIMPLEPIE_TYPE_ATOM_10', 512);

define('SIMPLEPIE_TYPE_ATOM_ALL', 768);

define('SIMPLEPIE_TYPE_ALL', 1023);

define('SIMPLEPIE_CONSTRUCT_NONE', 0);

define('SIMPLEPIE_CONSTRUCT_TEXT', 1);

define('SIMPLEPIE_CONSTRUCT_HTML', 2);

define('SIMPLEPIE_CONSTRUCT_XHTML', 4);

define('SIMPLEPIE_CONSTRUCT_BASE64', 8);

define('SIMPLEPIE_CONSTRUCT_IRI', 16);

define('SIMPLEPIE_CONSTRUCT_MAYBE_HTML', 32);

define('SIMPLEPIE_CONSTRUCT_ALL', 63);

define('SIMPLEPIE_SAME_CASE', 1);

define('SIMPLEPIE_LOWERCASE', 2);

define('SIMPLEPIE_UPPERCASE', 4);

define('SIMPLEPIE_PCRE_HTML_ATTRIBUTE', '((?:[\x09\x0A\x0B\x0C\x0D\x20]+[^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3D\x3E]*(?:[\x09\x0A\x0B\x0C\x0D\x20]*=[\x09\x0A\x0B\x0C\x0D\x20]*(?:"(?:[^"]*)"|\'(?:[^\']*)\'|(?:[^\x09\x0A\x0B\x0C\x0D\x20\x22\x27\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x3E]*)?))?)*)[\x09\x0A\x0B\x0C\x0D\x20]*');

define('SIMPLEPIE_PCRE_XML_ATTRIBUTE', '((?:\s+(?:(?:[^\s:]+:)?[^\s:]+)\s*=\s*(?:"(?:[^"]*)"|\'(?:[^\']*)\'))*)\s*');

define('SIMPLEPIE_NAMESPACE_XML', 'http://www.w3.org/XML/1998/namespace');

define('SIMPLEPIE_NAMESPACE_ATOM_10', 'http://www.w3.org/2005/Atom');

define('SIMPLEPIE_NAMESPACE_ATOM_03', 'http://purl.org/atom/ns#');

define('SIMPLEPIE_NAMESPACE_RDF', 'http://www.w3.org/1999/02/22-rdf-syntax-ns#');

define('SIMPLEPIE_NAMESPACE_RSS_090', 'http://my.netscape.com/rdf/simple/0.9/');

define('SIMPLEPIE_NAMESPACE_RSS_10', 'http://purl.org/rss/1.0/');

define('SIMPLEPIE_NAMESPACE_RSS_10_MODULES_CONTENT', 'http://purl.org/rss/1.0/modules/content/');

define('SIMPLEPIE_NAMESPACE_RSS_20', '');

define('SIMPLEPIE_NAMESPACE_DC_10', 'http://purl.org/dc/elements/1.0/');

define('SIMPLEPIE_NAMESPACE_DC_11', 'http://purl.org/dc/elements/1.1/');

define('SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO', 'http://www.w3.org/2003/01/geo/wgs84_pos#');

define('SIMPLEPIE_NAMESPACE_GEORSS', 'http://www.georss.org/georss');

define('SIMPLEPIE_NAMESPACE_MEDIARSS', 'http://search.yahoo.com/mrss/');

define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG', 'http://search.yahoo.com/mrss');

define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG2', 'http://video.search.yahoo.com/mrss');

define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG3', 'http://video.search.yahoo.com/mrss/');

define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG4', 'http://www.rssboard.org/media-rss');

define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG5', 'http://www.rssboard.org/media-rss/');

define('SIMPLEPIE_NAMESPACE_ITUNES', 'http://www.itunes.com/dtds/podcast-1.0.dtd');

define('SIMPLEPIE_NAMESPACE_XHTML', 'http://www.w3.org/1999/xhtml');

define('SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY', 'http://www.iana.org/assignments/relation/');

define('SIMPLEPIE_PHP5', version_compare(PHP_VERSION, '5.0.0', '>='));

define('SIMPLEPIE_FILE_SOURCE_NONE', 0);

define('SIMPLEPIE_FILE_SOURCE_REMOTE', 1);

define('SIMPLEPIE_FILE_SOURCE_LOCAL', 2);

define('SIMPLEPIE_FILE_SOURCE_FSOCKOPEN', 4);

define('SIMPLEPIE_FILE_SOURCE_CURL', 8);

define('SIMPLEPIE_FILE_SOURCE_FILE_GET_CONTENTS', 16);

class SimplePie_Core
{

public $data = array();

public $error;

public $sanitize;

public $useragent = SIMPLEPIE_USERAGENT;

public $feed_url;

public $file;

public $raw_data;

public $timeout = 10;

public $force_fsockopen = false;

public $force_feed = false;

public $xml_dump = false;

public $cache = true;

public $cache_duration = 3600;

public $autodiscovery_cache_duration = 604800;

public $cache_location = '/system/cms/cache/default/simplepie';

public $cache_name_function = 'md5';

public $order_by_date = true;

public $input_encoding = false;

public $autodiscovery = SIMPLEPIE_LOCATOR_ALL;

public $cache_class = 'SimplePie_Cache';

public $locator_class = 'SimplePie_Locator';

public $parser_class = 'SimplePie_Parser';

public $file_class = 'SimplePie_File';

public $item_class = 'SimplePie_Item';

public $author_class = 'SimplePie_Author';

public $category_class = 'SimplePie_Category';

public $enclosure_class = 'SimplePie_Enclosure';

public $caption_class = 'SimplePie_Caption';

public $copyright_class = 'SimplePie_Copyright';

public $credit_class = 'SimplePie_Credit';

public $rating_class = 'SimplePie_Rating';

public $restriction_class = 'SimplePie_Restriction';

public $content_type_sniffer_class = 'SimplePie_Content_Type_Sniffer';

public $source_class = 'SimplePie_Source';

public $javascript = 'js';

public $max_checked_feeds = 10;

public $all_discovered_feeds = array();

public $image_handler = '';

public $multifeed_url = array();

public $multifeed_objects = array();

public $config_settings = null;

public $item_limit = 0;

public $strip_attributes = array('bgsound', 'class', 'expr', 'id', 'style', 'onclick', 'onerror', 'onfinish', 'onmouseover', 'onmouseout', 'onfocus', 'onblur', 'lowsrc', 'dynsrc');

public $strip_htmltags = array('base', 'blink', 'body', 'doctype', 'embed', 'font', 'form', 'frame', 'frameset', 'html', 'iframe', 'input', 'marquee', 'meta', 'noscript', 'object', 'param', 'script', 'style');

public function __construct()
	{
		if (version_compare(PHP_VERSION, '5.0', '<'))
		{
			trigger_error('PHP 4.x is no longer supported. Please upgrade to PHP 5.2 or newer.');
			die();
		}

$this->sanitize = new SimplePie_Sanitize();

if (func_num_args() > 0)
		{
			trigger_error('Passing parameters to the constructor is no longer supported. Please use set_feed_url(), set_cache_location(), and set_cache_location() directly.');
		}
	}

public function __toString()
	{
		return md5(serialize($this->data));
	}

public function __destruct()
	{
		if ((version_compare(PHP_VERSION, '5.3', '<') || !gc_enabled()) && !ini_get('zend.ze1_compatibility_mode'))
		{
			if (!empty($this->data['items']))
			{
				foreach ($this->data['items'] as $item)
				{
					$item->__destruct();
				}
				unset($item, $this->data['items']);
			}
			if (!empty($this->data['ordered_items']))
			{
				foreach ($this->data['ordered_items'] as $item)
				{
					$item->__destruct();
				}
				unset($item, $this->data['ordered_items']);
			}
		}
	}

public function force_feed($enable = false)
	{
		$this->force_feed = (bool) $enable;
	}

public function set_feed_url($url)
	{
		if (is_array($url))
		{
			$this->multifeed_url = array();
			foreach ($url as $value)
			{
				$this->multifeed_url[] = SimplePie_Misc::fix_protocol($value, 1);
			}
		}
		else
		{
			$this->feed_url = SimplePie_Misc::fix_protocol($url, 1);
		}
	}

public function set_file(&$file)
	{
		if (is_a($file, 'SimplePie_File'))
		{
			$this->feed_url = $file->url;
			$this->file =& $file;
			return true;
		}
		return false;
	}

public function set_raw_data($data)
	{
		$this->raw_data = $data;
	}

public function set_timeout($timeout = 10)
	{
		$this->timeout = (int) $timeout;
	}

public function force_fsockopen($enable = false)
	{
		$this->force_fsockopen = (bool) $enable;
	}

public function enable_cache($enable = true)
	{
		$this->cache = (bool) $enable;
	}

public function set_cache_duration($seconds = 3600)
	{
		$this->cache_duration = (int) $seconds;
	}

public function set_autodiscovery_cache_duration($seconds = 604800)
	{
		$this->autodiscovery_cache_duration = (int) $seconds;
	}

public function set_cache_location($location = '/system/cms/cache/default/simplepie')
	{
		$this->cache_location = (string) $location;
	}

public function enable_order_by_date($enable = true)
	{
		$this->order_by_date = (bool) $enable;
	}

public function set_input_encoding($encoding = false)
	{
		if ($encoding)
		{
			$this->input_encoding = (string) $encoding;
		}
		else
		{
			$this->input_encoding = false;
		}
	}

public function set_autodiscovery_level($level = SIMPLEPIE_LOCATOR_ALL)
	{
		$this->autodiscovery = (int) $level;
	}

public function set_cache_class($class = 'SimplePie_Cache')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Cache'))
		{
			$this->cache_class = $class;
			return true;
		}
		return false;
	}

public function set_locator_class($class = 'SimplePie_Locator')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Locator'))
		{
			$this->locator_class = $class;
			return true;
		}
		return false;
	}

public function set_parser_class($class = 'SimplePie_Parser')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Parser'))
		{
			$this->parser_class = $class;
			return true;
		}
		return false;
	}

public function set_file_class($class = 'SimplePie_File')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_File'))
		{
			$this->file_class = $class;
			return true;
		}
		return false;
	}

public function set_sanitize_class($class = 'SimplePie_Sanitize')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Sanitize'))
		{
			$this->sanitize = new $class();
			return true;
		}
		return false;
	}

public function set_item_class($class = 'SimplePie_Item')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Item'))
		{
			$this->item_class = $class;
			return true;
		}
		return false;
	}

public function set_author_class($class = 'SimplePie_Author')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Author'))
		{
			$this->author_class = $class;
			return true;
		}
		return false;
	}

public function set_category_class($class = 'SimplePie_Category')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Category'))
		{
			$this->category_class = $class;
			return true;
		}
		return false;
	}

public function set_enclosure_class($class = 'SimplePie_Enclosure')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Enclosure'))
		{
			$this->enclosure_class = $class;
			return true;
		}
		return false;
	}

public function set_caption_class($class = 'SimplePie_Caption')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Caption'))
		{
			$this->caption_class = $class;
			return true;
		}
		return false;
	}

public function set_copyright_class($class = 'SimplePie_Copyright')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Copyright'))
		{
			$this->copyright_class = $class;
			return true;
		}
		return false;
	}

public function set_credit_class($class = 'SimplePie_Credit')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Credit'))
		{
			$this->credit_class = $class;
			return true;
		}
		return false;
	}

public function set_rating_class($class = 'SimplePie_Rating')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Rating'))
		{
			$this->rating_class = $class;
			return true;
		}
		return false;
	}

public function set_restriction_class($class = 'SimplePie_Restriction')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Restriction'))
		{
			$this->restriction_class = $class;
			return true;
		}
		return false;
	}

public function set_content_type_sniffer_class($class = 'SimplePie_Content_Type_Sniffer')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Content_Type_Sniffer'))
		{
			$this->content_type_sniffer_class = $class;
			return true;
		}
		return false;
	}

public function set_source_class($class = 'SimplePie_Source')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Source'))
		{
			$this->source_class = $class;
			return true;
		}
		return false;
	}

public function set_useragent($ua = SIMPLEPIE_USERAGENT)
	{
		$this->useragent = (string) $ua;
	}

public function set_cache_name_function($function = 'md5')
	{
		if (is_callable($function))
		{
			$this->cache_name_function = $function;
		}
	}

public function set_javascript($get = 'js')
	{
		if ($get)
		{
			$this->javascript = (string) $get;
		}
		else
		{
			$this->javascript = false;
		}
	}

public function set_stupidly_fast($set = false)
	{
		if ($set)
		{
			$this->enable_order_by_date(false);
			$this->remove_div(false);
			$this->strip_comments(false);
			$this->strip_htmltags(false);
			$this->strip_attributes(false);
			$this->set_image_handler(false);
		}
	}

public function set_max_checked_feeds($max = 10)
	{
		$this->max_checked_feeds = (int) $max;
	}

public function remove_div($enable = true)
	{
		$this->sanitize->remove_div($enable);
	}

public function strip_htmltags($tags = '', $encode = null)
	{
		if ($tags === '')
		{
			$tags = $this->strip_htmltags;
		}
		$this->sanitize->strip_htmltags($tags);
		if ($encode !== null)
		{
			$this->sanitize->encode_instead_of_strip($tags);
		}
	}

public function encode_instead_of_strip($enable = true)
	{
		$this->sanitize->encode_instead_of_strip($enable);
	}

public function strip_attributes($attribs = '')
	{
		if ($attribs === '')
		{
			$attribs = $this->strip_attributes;
		}
		$this->sanitize->strip_attributes($attribs);
	}

public function set_output_encoding($encoding = 'UTF-8')
	{
		$this->sanitize->set_output_encoding($encoding);
	}

public function strip_comments($strip = false)
	{
		$this->sanitize->strip_comments($strip);
	}

public function set_url_replacements($element_attribute = array('a' => 'href', 'area' => 'href', 'blockquote' => 'cite', 'del' => 'cite', 'form' => 'action', 'img' => array('longdesc', 'src'), 'input' => 'src', 'ins' => 'cite', 'q' => 'cite'))
	{
		$this->sanitize->set_url_replacements($element_attribute);
	}

public function set_image_handler($page = false, $qs = 'i')
	{
		if ($page !== false)
		{
			$this->sanitize->set_image_handler($page . '?' . $qs . '=');
		}
		else
		{
			$this->image_handler = '';
		}
	}

public function set_item_limit($limit = 0)
	{
		$this->item_limit = (int) $limit;
	}

public function init()
	{
				if ((function_exists('version_compare') && version_compare(PHP_VERSION, '5.0', '<')) || !extension_loaded('xml') || !extension_loaded('pcre'))
		{
			return false;
		}
				elseif (!extension_loaded('xmlreader'))
		{
			static $xml_is_sane = null;
			if ($xml_is_sane === null)
			{
				$parser_check = xml_parser_create();
				xml_parse_into_struct($parser_check, '<foo>&amp;</foo>', $values);
				xml_parser_free($parser_check);
				$xml_is_sane = isset($values[0]['value']);
			}
			if (!$xml_is_sane)
			{
				return false;
			}
		}

if (isset($_GET[$this->javascript]))
		{
			SimplePie_Misc::output_javascript();
			exit;
		}

$this->sanitize->pass_cache_data($this->cache, $this->cache_location, $this->cache_name_function, $this->cache_class);
		$this->sanitize->pass_file_data($this->file_class, $this->timeout, $this->useragent, $this->force_fsockopen);

if ($this->feed_url !== null || $this->raw_data !== null)
		{
			$this->error = null;
			$this->data = array();
			$this->multifeed_objects = array();
			$cache = false;

if ($this->feed_url !== null)
			{
				$parsed_feed_url = SimplePie_Misc::parse_url($this->feed_url);
								if ($this->cache && $parsed_feed_url['scheme'] !== '')
				{
					$cache = call_user_func(array($this->cache_class, 'create'), $this->cache_location, call_user_func($this->cache_name_function, $this->feed_url), 'spc');
				}
								if ($cache && !$this->xml_dump)
				{
										$this->data = $cache->load();
					if (!empty($this->data))
					{
												if (!isset($this->data['build']) || $this->data['build'] !== SIMPLEPIE_BUILD)
						{
							$cache->unlink();
							$this->data = array();
						}
												elseif (isset($this->data['url']) && $this->data['url'] !== $this->feed_url)
						{
							$cache = false;
							$this->data = array();
						}
												elseif (isset($this->data['feed_url']))
						{
														if ($cache->mtime() + $this->autodiscovery_cache_duration > time())
							{
																if ($this->data['feed_url'] === $this->data['url'])
								{
									$cache->unlink();
									$this->data = array();
								}
								else
								{
									$this->set_feed_url($this->data['feed_url']);
									return $this->init();
								}
							}
						}
												elseif ($cache->mtime() + $this->cache_duration < time())
						{
														if (isset($this->data['headers']['last-modified']) || isset($this->data['headers']['etag']))
							{
								$headers = array();
								if (isset($this->data['headers']['last-modified']))
								{
									$headers['if-modified-since'] = $this->data['headers']['last-modified'];
								}
								if (isset($this->data['headers']['etag']))
								{
									$headers['if-none-match'] = '"' . $this->data['headers']['etag'] . '"';
								}

$file = new $this->file_class($this->feed_url, $this->timeout/10, 5, $headers, $this->useragent, $this->force_fsockopen);

if ($file->success)
								{
									if ($file->status_code === 304)
									{
										$cache->touch();
										return true;
									}
									else
									{
										$headers = $file->headers;
									}
								}
								else
								{
									unset($file);
								}
							}
						}
												else
						{
							return true;
						}
					}
										else
					{
						$cache->unlink();
						$this->data = array();
					}
				}
								if (!isset($file))
				{
					if (is_a($this->file, 'SimplePie_File') && $this->file->url === $this->feed_url)
					{
						$file =& $this->file;
					}
					else
					{
						$file = new $this->file_class($this->feed_url, $this->timeout, 5, null, $this->useragent, $this->force_fsockopen);
					}
				}
								if (!$file->success && !($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($file->status_code === 200 || $file->status_code > 206 && $file->status_code < 300)))
				{
					$this->error = $file->error;
					if (!empty($this->data))
					{
						return true;
					}
					else
					{
						return false;
					}
				}

if (!$this->force_feed)
				{
										$locate = new $this->locator_class($file, $this->timeout, $this->useragent, $this->file_class, $this->max_checked_feeds, $this->content_type_sniffer_class);

if (!$locate->is_feed($file))
					{
												unset($file);
						if ($file = $locate->find($this->autodiscovery, $this->all_discovered_feeds))
						{
							if ($cache)
							{
								$this->data = array('url' => $this->feed_url, 'feed_url' => $file->url, 'build' => SIMPLEPIE_BUILD);
//								die(var_dump($this));
								if (!$cache->save($this))
								{
									trigger_error("$this->cache_location is not writeable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
								}
								$cache = call_user_func(array($this->cache_class, 'create'), $this->cache_location, call_user_func($this->cache_name_function, $file->url), 'spc');
							}
							$this->feed_url = $file->url;
						}
						else
						{
							$this->error = "A feed could not be found at $this->feed_url. A feed with an invalid mime type may fall victim to this error, or " . SIMPLEPIE_NAME . " was unable to auto-discover it.. Use force_feed() if you are certain this URL is a real feed.";
							SimplePie_Misc::error($this->error, E_USER_NOTICE, __FILE__, __LINE__);
							return false;
						}
					}
					$locate = null;
				}

$headers = $file->headers;
				$data = $file->body;
				$sniffer = new $this->content_type_sniffer_class($file);
				$sniffed = $sniffer->get_type();
			}
			else
			{
				$data = $this->raw_data;
			}

$encodings = array();

if ($this->input_encoding !== false)
			{
				$encodings[] = $this->input_encoding;
			}

$application_types = array('application/xml', 'application/xml-dtd', 'application/xml-external-parsed-entity');
			$text_types = array('text/xml', 'text/xml-external-parsed-entity');

if (isset($sniffed))
			{
				if (in_array($sniffed, $application_types) || substr($sniffed, 0, 12) === 'application/' && substr($sniffed, -4) === '+xml')
				{
					if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset))
					{
						$encodings[] = strtoupper($charset[1]);
					}
					$encodings = array_merge($encodings, SimplePie_Misc::xml_encoding($data));
					$encodings[] = 'UTF-8';
				}
				elseif (in_array($sniffed, $text_types) || substr($sniffed, 0, 5) === 'text/' && substr($sniffed, -4) === '+xml')
				{
					if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset))
					{
						$encodings[] = $charset[1];
					}
					$encodings[] = 'US-ASCII';
				}
								elseif (substr($sniffed, 0, 5) === 'text/')
				{
					$encodings[] = 'US-ASCII';
				}
			}

$encodings = array_merge($encodings, SimplePie_Misc::xml_encoding($data));
			$encodings[] = 'UTF-8';
			$encodings[] = 'ISO-8859-1';

$encodings = array_unique($encodings);

if ($this->xml_dump)
			{
				header('Content-type: text/xml; charset=' . $encodings[0]);
				echo $data;
				exit;
			}

foreach ($encodings as $encoding)
			{
								if ($utf8_data = SimplePie_Misc::change_encoding($data, $encoding, 'UTF-8'))
				{
										$parser = new $this->parser_class();

if ($parser->parse($utf8_data, 'UTF-8'))
					{
						$this->data = $parser->get_data();
						if ($this->get_type() & ~SIMPLEPIE_TYPE_NONE)
						{
							if (isset($headers))
							{
								$this->data['headers'] = $headers;
							}
							$this->data['build'] = SIMPLEPIE_BUILD;

if ($cache && !$cache->save($this))
							{
								trigger_error("$this->cache_location is not writeable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
							}
							return true;
						}
						else
						{
							$this->error = "A feed could not be found at $this->feed_url. This does not appear to be a valid RSS or Atom feed.";
							SimplePie_Misc::error($this->error, E_USER_NOTICE, __FILE__, __LINE__);
							return false;
						}
					}
				}
			}

if (isset($parser))
			{
								$this->error = sprintf('This XML document is invalid, likely due to invalid characters. XML error: %s at line %d, column %d', $parser->get_error_string(), $parser->get_current_line(), $parser->get_current_column());
			}
			else
			{
				$this->error = 'The data could not be converted to UTF-8. You MUST have either the iconv or mbstring extension installed. Upgrading to PHP 5.x (which includes iconv) is highly recommended.';
			}

SimplePie_Misc::error($this->error, E_USER_NOTICE, __FILE__, __LINE__);

return false;
		}
		elseif (!empty($this->multifeed_url))
		{
			$i = 0;
			$success = 0;
			$this->multifeed_objects = array();
			foreach ($this->multifeed_url as $url)
			{
				$this->multifeed_objects[$i] = clone $this;
				$this->multifeed_objects[$i]->set_feed_url($url);
				$success |= $this->multifeed_objects[$i]->init();
				$i++;
			}
			return (bool) $success;
		}
		else
		{
			return false;
		}
	}

public function error()
	{
		return $this->error;
	}

public function get_encoding()
	{
		return $this->sanitize->output_encoding;
	}

public function handle_content_type($mime = 'text/html')
	{
		if (!headers_sent())
		{
			$header = "Content-type: $mime;";
			if ($this->get_encoding())
			{
				$header .= ' charset=' . $this->get_encoding();
			}
			else
			{
				$header .= ' charset=UTF-8';
			}
			header($header);
		}
	}

public function get_type()
	{
		if (!isset($this->data['type']))
		{
			$this->data['type'] = SIMPLEPIE_TYPE_ALL;
			if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed']))
			{
				$this->data['type'] &= SIMPLEPIE_TYPE_ATOM_10;
			}
			elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed']))
			{
				$this->data['type'] &= SIMPLEPIE_TYPE_ATOM_03;
			}
			elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF']))
			{
				if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_10]['channel'])
				|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_10]['image'])
				|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item'])
				|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_10]['textinput']))
				{
					$this->data['type'] &= SIMPLEPIE_TYPE_RSS_10;
				}
				if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_090]['channel'])
				|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_090]['image'])
				|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item'])
				|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_090]['textinput']))
				{
					$this->data['type'] &= SIMPLEPIE_TYPE_RSS_090;
				}
			}
			elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss']))
			{
				$this->data['type'] &= SIMPLEPIE_TYPE_RSS_ALL;
				if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['attribs']['']['version']))
				{
					switch (trim($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['attribs']['']['version']))
					{
						case '0.91':
							$this->data['type'] &= SIMPLEPIE_TYPE_RSS_091;
							if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['skiphours']['hour'][0]['data']))
							{
								switch (trim($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['skiphours']['hour'][0]['data']))
								{
									case '0':
										$this->data['type'] &= SIMPLEPIE_TYPE_RSS_091_NETSCAPE;
										break;

case '24':
										$this->data['type'] &= SIMPLEPIE_TYPE_RSS_091_USERLAND;
										break;
								}
							}
							break;

case '0.92':
							$this->data['type'] &= SIMPLEPIE_TYPE_RSS_092;
							break;

case '0.93':
							$this->data['type'] &= SIMPLEPIE_TYPE_RSS_093;
							break;

case '0.94':
							$this->data['type'] &= SIMPLEPIE_TYPE_RSS_094;
							break;

case '2.0':
							$this->data['type'] &= SIMPLEPIE_TYPE_RSS_20;
							break;
					}
				}
			}
			else
			{
				$this->data['type'] = SIMPLEPIE_TYPE_NONE;
			}
		}
		return $this->data['type'];
	}

public function subscribe_url()
	{
		if ($this->feed_url !== null)
		{
			return $this->sanitize($this->feed_url, SIMPLEPIE_CONSTRUCT_IRI);
		}
		else
		{
			return null;
		}
	}

public function get_feed_tags($namespace, $tag)
	{
		$type = $this->get_type();
		if ($type & SIMPLEPIE_TYPE_ATOM_10)
		{
			if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]['child'][$namespace][$tag]))
			{
				return $this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]['child'][$namespace][$tag];
			}
		}
		if ($type & SIMPLEPIE_TYPE_ATOM_03)
		{
			if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]['child'][$namespace][$tag]))
			{
				return $this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]['child'][$namespace][$tag];
			}
		}
		if ($type & SIMPLEPIE_TYPE_RSS_RDF)
		{
			if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][$namespace][$tag]))
			{
				return $this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][$namespace][$tag];
			}
		}
		if ($type & SIMPLEPIE_TYPE_RSS_SYNDICATION)
		{
			if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][$namespace][$tag]))
			{
				return $this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][$namespace][$tag];
			}
		}
		return null;
	}

public function get_channel_tags($namespace, $tag)
	{
		$type = $this->get_type();
		if ($type & SIMPLEPIE_TYPE_ATOM_ALL)
		{
			if ($return = $this->get_feed_tags($namespace, $tag))
			{
				return $return;
			}
		}
		if ($type & SIMPLEPIE_TYPE_RSS_10)
		{
			if ($channel = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'channel'))
			{
				if (isset($channel[0]['child'][$namespace][$tag]))
				{
					return $channel[0]['child'][$namespace][$tag];
				}
			}
		}
		if ($type & SIMPLEPIE_TYPE_RSS_090)
		{
			if ($channel = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'channel'))
			{
				if (isset($channel[0]['child'][$namespace][$tag]))
				{
					return $channel[0]['child'][$namespace][$tag];
				}
			}
		}
		if ($type & SIMPLEPIE_TYPE_RSS_SYNDICATION)
		{
			if ($channel = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'channel'))
			{
				if (isset($channel[0]['child'][$namespace][$tag]))
				{
					return $channel[0]['child'][$namespace][$tag];
				}
			}
		}
		return null;
	}

public function get_image_tags($namespace, $tag)
	{
		$type = $this->get_type();
		if ($type & SIMPLEPIE_TYPE_RSS_10)
		{
			if ($image = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'image'))
			{
				if (isset($image[0]['child'][$namespace][$tag]))
				{
					return $image[0]['child'][$namespace][$tag];
				}
			}
		}
		if ($type & SIMPLEPIE_TYPE_RSS_090)
		{
			if ($image = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'image'))
			{
				if (isset($image[0]['child'][$namespace][$tag]))
				{
					return $image[0]['child'][$namespace][$tag];
				}
			}
		}
		if ($type & SIMPLEPIE_TYPE_RSS_SYNDICATION)
		{
			if ($image = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'image'))
			{
				if (isset($image[0]['child'][$namespace][$tag]))
				{
					return $image[0]['child'][$namespace][$tag];
				}
			}
		}
		return null;
	}

public function get_base($element = array())
	{
		if (!($this->get_type() & SIMPLEPIE_TYPE_RSS_SYNDICATION) && !empty($element['xml_base_explicit']) && isset($element['xml_base']))
		{
			return $element['xml_base'];
		}
		elseif ($this->get_link() !== null)
		{
			return $this->get_link();
		}
		else
		{
			return $this->subscribe_url();
		}
	}

public function sanitize($data, $type, $base = '')
	{
		return $this->sanitize->sanitize($data, $type, $base);
	}

public function get_title()
	{
		if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'title'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_10_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'title'))
		{
			return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'title'))
		{
			return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
		}
		else
		{
			return null;
		}
	}

public function get_category($key = 0)
	{
		$categories = $this->get_categories();
		if (isset($categories[$key]))
		{
			return $categories[$key];
		}
		else
		{
			return null;
		}
	}

public function get_categories()
	{
		$categories = array();

foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'category') as $category)
		{
			$term = null;
			$scheme = null;
			$label = null;
			if (isset($category['attribs']['']['term']))
			{
				$term = $this->sanitize($category['attribs']['']['term'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($category['attribs']['']['scheme']))
			{
				$scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($category['attribs']['']['label']))
			{
				$label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			$categories[] = new $this->category_class($term, $scheme, $label);
		}
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'category') as $category)
		{
									$term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			if (isset($category['attribs']['']['domain']))
			{
				$scheme = $this->sanitize($category['attribs']['']['domain'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			else
			{
				$scheme = null;
			}
			$categories[] = new $this->category_class($term, $scheme, null);
		}
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'subject') as $category)
		{
			$categories[] = new $this->category_class($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'subject') as $category)
		{
			$categories[] = new $this->category_class($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}

if (!empty($categories))
		{
			return SimplePie_Misc::array_unique($categories);
		}
		else
		{
			return null;
		}
	}

public function get_author($key = 0)
	{
		$authors = $this->get_authors();
		if (isset($authors[$key]))
		{
			return $authors[$key];
		}
		else
		{
			return null;
		}
	}

public function get_authors()
	{
		$authors = array();
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'author') as $author)
		{
			$name = null;
			$uri = null;
			$email = null;
			if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
			{
				$name = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
			{
				$uri = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
			}
			if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
			{
				$email = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $uri !== null)
			{
				$authors[] = new $this->author_class($name, $uri, $email);
			}
		}
		if ($author = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'author'))
		{
			$name = null;
			$url = null;
			$email = null;
			if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
			{
				$name = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
			{
				$url = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
			}
			if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
			{
				$email = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $url !== null)
			{
				$authors[] = new $this->author_class($name, $url, $email);
			}
		}
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'creator') as $author)
		{
			$authors[] = new $this->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'creator') as $author)
		{
			$authors[] = new $this->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'author') as $author)
		{
			$authors[] = new $this->author_class($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null);
		}

if (!empty($authors))
		{
			return SimplePie_Misc::array_unique($authors);
		}
		else
		{
			return null;
		}
	}

public function get_contributor($key = 0)
	{
		$contributors = $this->get_contributors();
		if (isset($contributors[$key]))
		{
			return $contributors[$key];
		}
		else
		{
			return null;
		}
	}

public function get_contributors()
	{
		$contributors = array();
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'contributor') as $contributor)
		{
			$name = null;
			$uri = null;
			$email = null;
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
			{
				$name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
			{
				$uri = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
			{
				$email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $uri !== null)
			{
				$contributors[] = new $this->author_class($name, $uri, $email);
			}
		}
		foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'contributor') as $contributor)
		{
			$name = null;
			$url = null;
			$email = null;
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
			{
				$name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
			{
				$url = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
			}
			if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
			{
				$email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
			}
			if ($name !== null || $email !== null || $url !== null)
			{
				$contributors[] = new $this->author_class($name, $url, $email);
			}
		}

if (!empty($contributors))
		{
			return SimplePie_Misc::array_unique($contributors);
		}
		else
		{
			return null;
		}
	}

public function get_link($key = 0, $rel = 'alternate')
	{
		$links = $this->get_links($rel);
		if (isset($links[$key]))
		{
			return $links[$key];
		}
		else
		{
			return null;
		}
	}

public function get_permalink()
	{
		return $this->get_link(0);
	}

public function get_links($rel = 'alternate')
	{
		if (!isset($this->data['links']))
		{
			$this->data['links'] = array();
			if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'link'))
			{
				foreach ($links as $link)
				{
					if (isset($link['attribs']['']['href']))
					{
						$link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']

URL: http://simplepie.org

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