simplepie.php

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	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_parser_class($class = 'SimplePie_Parser')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Parser'))
		{
			$this->parser_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for remote file fetching.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_file_class($class = 'SimplePie_File')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_File'))
		{
			$this->file_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for data sanitization.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_sanitize_class($class = 'SimplePie_Sanitize')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Sanitize'))
		{
			$this->sanitize =& new $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for handling feed items.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_item_class($class = 'SimplePie_Item')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Item'))
		{
			$this->item_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for handling author data.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_author_class($class = 'SimplePie_Author')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Author'))
		{
			$this->author_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for handling category data.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_category_class($class = 'SimplePie_Category')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Category'))
		{
			$this->category_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for feed enclosures.
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_enclosure_class($class = 'SimplePie_Enclosure')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Enclosure'))
		{
			$this->enclosure_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for <media:text> captions
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_caption_class($class = 'SimplePie_Caption')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Caption'))
		{
			$this->caption_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for <media:copyright>
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_copyright_class($class = 'SimplePie_Copyright')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Copyright'))
		{
			$this->copyright_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for <media:credit>
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_credit_class($class = 'SimplePie_Credit')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Credit'))
		{
			$this->credit_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for <media:rating>
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_rating_class($class = 'SimplePie_Rating')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Rating'))
		{
			$this->rating_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to change which class SimplePie uses for <media:restriction>
	 * Useful when you are overloading or extending SimplePie's default classes.
	 *
	 * @access public
	 * @param string $class Name of custom class.
	 * @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
	 * @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
	 */
	function set_restriction_class($class = 'SimplePie_Restriction')
	{
		if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Restriction'))
		{
			$this->restriction_class = $class;
			return true;
		}
		return false;
	}

	/**
	 * Allows you to override the default user agent string.
	 *
	 * @access public
	 * @param string $ua New user agent string.
	 */
	function set_useragent($ua = SIMPLEPIE_USERAGENT)
	{
		$this->useragent = (string) $ua;
	}

	/**
	 * Set callback function to create cache filename with
	 *
	 * @access public
	 * @param mixed $function Callback function
	 */
	function set_cache_name_function($function = 'md5')
	{
		if (is_callable($function))
		{
			$this->cache_name_function = $function;
		}
	}

	/**
	 * Set javascript query string parameter
	 *
	 * @access public
	 * @param mixed $get Javascript query string parameter
	 */
	function set_javascript($get = 'js')
	{
		if ($get)
		{
			$this->javascript = (string) $get;
		}
		else
		{
			$this->javascript = false;
		}
	}

	/**
	 * Set options to make SP as fast as possible.  Forgoes a
	 * substantial amount of data sanitization in favor of speed.
	 *
	 * @access public
	 * @param bool $set Whether to set them or not
	 */
	function set_stupidly_fast($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);
		}
	}

	/**
	 * Set maximum number of feeds to check with autodiscovery
	 *
	 * @access public
	 * @param int $max Maximum number of feeds to check
	 */
	function set_max_checked_feeds($max = 10)
	{
		$this->max_checked_feeds = (int) $max;
	}

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

	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);
		}
	}

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

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

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

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

	/**
	 * Set element/attribute key/value pairs of HTML attributes
	 * containing URLs that need to be resolved relative to the feed
	 *
	 * @access public
	 * @since 1.0
	 * @param array $element_attribute Element/attribute key/value pairs
	 */
	function set_url_replacements($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);
	}

	/**
	 * Set the handler to enable the display of cached favicons.
	 *
	 * @access public
	 * @param str $page Web-accessible path to the handler_favicon.php file.
	 * @param str $qs The query string that the value should be passed to.
	 */
	function set_favicon_handler($page = false, $qs = 'i')
	{
		if ($page != false)
		{
			$this->favicon_handler = $page . '?' . $qs . '=';
		}
		else
		{
			$this->favicon_handler = '';
		}
	}

	/**
	 * Set the handler to enable the display of cached images.
	 *
	 * @access public
	 * @param str $page Web-accessible path to the handler_image.php file.
	 * @param str $qs The query string that the value should be passed to.
	 */
	function set_image_handler($page = false, $qs = 'i')
	{
		if ($page != false)
		{
			$this->sanitize->set_image_handler($page . '?' . $qs . '=');
		}
		else
		{
			$this->image_handler = '';
		}
	}

	function init()
	{
		if ((function_exists('version_compare') && version_compare(PHP_VERSION, '4.1.0', '<')) || !extension_loaded('xml') || !extension_loaded('pcre'))
		{
			return false;
		}
		if (isset($_GET[$this->javascript]))
		{
			if (function_exists('ob_gzhandler'))
			{
				ob_start('ob_gzhandler');
			}
			header('Content-type: text/javascript; charset: UTF-8');
			header('Cache-Control: must-revalidate');
			header('Expires: ' . gmdate('D, d M Y H:i:s', time() + 604800) . ' GMT'); // 7 days
			?>
function embed_odeo(link) {
	document.writeln('<embed src="http://odeo.com/flash/audio_player_fullsize.swf" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" quality="high" width="440" height="80" wmode="transparent" allowScriptAccess="any" flashvars="valid_sample_rate=true&external_url='+link+'"></embed>');
}

function embed_quicktime(type, bgcolor, width, height, link, placeholder, loop) {
	if (placeholder != '') {
		document.writeln('<embed type="'+type+'" style="cursor:hand; cursor:pointer;" href="'+link+'" src="'+placeholder+'" width="'+width+'" height="'+height+'" autoplay="false" target="myself" controller="false" loop="'+loop+'" scale="aspect" bgcolor="'+bgcolor+'" pluginspage="http://www.apple.com/quicktime/download/"></embed>');
	}
	else {
		document.writeln('<embed type="'+type+'" style="cursor:hand; cursor:pointer;" src="'+link+'" width="'+width+'" height="'+height+'" autoplay="false" target="myself" controller="true" loop="'+loop+'" scale="aspect" bgcolor="'+bgcolor+'" pluginspage="http://www.apple.com/quicktime/download/"></embed>');
	}
}

function embed_flash(bgcolor, width, height, link, loop, type) {
	document.writeln('<embed src="'+link+'" pluginspage="http://www.macromedia.com/go/getflashplayer" type="'+type+'" quality="high" width="'+width+'" height="'+height+'" bgcolor="'+bgcolor+'" loop="'+loop+'"></embed>');
}

function embed_flv(width, height, link, placeholder, loop, player) {
	document.writeln('<embed src="'+player+'" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" quality="high" width="'+width+'" height="'+height+'" wmode="transparent" flashvars="file='+link+'&autostart=false&repeat='+loop+'&showdigits=true&showfsbutton=false"></embed>');
}

function embed_wmedia(width, height, link) {
	document.writeln('<embed type="application/x-mplayer2" src="'+link+'" autosize="1" width="'+width+'" height="'+height+'" showcontrols="1" showstatusbar="0" showdisplay="0" autostart="0"></embed>');
}
			<?php
			exit;
		}

		// Pass whatever was set with config options over to the sanitizer.
		$this->sanitize->pass_cache_data($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->data = array();
			$this->multifeed_objects = array();
			$cache = false;

			if ($this->feed_url !== null)
			{
				$parsed_feed_url = SimplePie_Misc::parse_url($this->feed_url);
				// Decide whether to enable caching
				if ($this->cache && $parsed_feed_url['scheme'] !== '')
				{
					$cache =& new $this->cache_class($this->cache_location, call_user_func($this->cache_name_function, $this->feed_url), 'spc');
				}
				// If it's enabled and we don't want an XML dump, use the cache
				if ($cache && !$this->xml_dump)
				{
					// Load the Cache
					$this->data = $cache->load();
					if (!empty($this->data))
					{
						// If the cache is for an outdated build of SimplePie
						if (!isset($this->data['build']) || $this->data['build'] != SIMPLEPIE_BUILD)
						{
							$cache->unlink();
							$this->data = array();
						}
						// If we've hit a collision just rerun it with caching disabled
						elseif (isset($this->data['url']) && $this->data['url'] != $this->feed_url)
						{
							$cache = false;