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friendica/simplepie/simplepie.inc

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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) 2004-2009, Ryan Parman and Geoffrey Sneddon
* 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 1.2.1-dev
* @copyright 2004-2009 Ryan Parman, Geoffrey Sneddon
* @author Ryan Parman
* @author Geoffrey Sneddon
* @link http://simplepie.org/ SimplePie
* @link http://simplepie.org/support/ Please submit all bug reports and feature requests to the SimplePie forums
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
* @todo phpDoc comments
*/
/**
* SimplePie Name
*/
define('SIMPLEPIE_NAME', 'SimplePie');
/**
* SimplePie Version
*/
define('SIMPLEPIE_VERSION', '1.2.1-dev');
/**
* SimplePie Build
* @todo Hardcode for release (there's no need to have to call SimplePie_Misc::parse_date() only every load of simplepie.inc)
*/
define('SIMPLEPIE_BUILD', gmdate('YmdHis', SimplePie_Misc::parse_date(substr('$Date$', 7, 25)) ? SimplePie_Misc::parse_date(substr('$Date$', 7, 25)) : filemtime(__FILE__)));
/**
* SimplePie Website URL
*/
define('SIMPLEPIE_URL', 'http://simplepie.org');
/**
* SimplePie Useragent
* @see SimplePie::set_useragent()
*/
define('SIMPLEPIE_USERAGENT', SIMPLEPIE_NAME . '/' . SIMPLEPIE_VERSION . ' (Feed Parser; ' . SIMPLEPIE_URL . '; Allow like Gecko) Build/' . SIMPLEPIE_BUILD);
/**
* SimplePie Linkback
*/
define('SIMPLEPIE_LINKBACK', '<a href="' . SIMPLEPIE_URL . '" title="' . SIMPLEPIE_NAME . ' ' . SIMPLEPIE_VERSION . '">' . SIMPLEPIE_NAME . '</a>');
/**
* No Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
define('SIMPLEPIE_LOCATOR_NONE', 0);
/**
* Feed Link Element Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
define('SIMPLEPIE_LOCATOR_AUTODISCOVERY', 1);
/**
* Local Feed Extension Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
define('SIMPLEPIE_LOCATOR_LOCAL_EXTENSION', 2);
/**
* Local Feed Body Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
define('SIMPLEPIE_LOCATOR_LOCAL_BODY', 4);
/**
* Remote Feed Extension Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
define('SIMPLEPIE_LOCATOR_REMOTE_EXTENSION', 8);
/**
* Remote Feed Body Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
define('SIMPLEPIE_LOCATOR_REMOTE_BODY', 16);
/**
* All Feed Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
define('SIMPLEPIE_LOCATOR_ALL', 31);
/**
* No known feed type
*/
define('SIMPLEPIE_TYPE_NONE', 0);
/**
* RSS 0.90
*/
define('SIMPLEPIE_TYPE_RSS_090', 1);
/**
* RSS 0.91 (Netscape)
*/
define('SIMPLEPIE_TYPE_RSS_091_NETSCAPE', 2);
/**
* RSS 0.91 (Userland)
*/
define('SIMPLEPIE_TYPE_RSS_091_USERLAND', 4);
/**
* RSS 0.91 (both Netscape and Userland)
*/
define('SIMPLEPIE_TYPE_RSS_091', 6);
/**
* RSS 0.92
*/
define('SIMPLEPIE_TYPE_RSS_092', 8);
/**
* RSS 0.93
*/
define('SIMPLEPIE_TYPE_RSS_093', 16);
/**
* RSS 0.94
*/
define('SIMPLEPIE_TYPE_RSS_094', 32);
/**
* RSS 1.0
*/
define('SIMPLEPIE_TYPE_RSS_10', 64);
/**
* RSS 2.0
*/
define('SIMPLEPIE_TYPE_RSS_20', 128);
/**
* RDF-based RSS
*/
define('SIMPLEPIE_TYPE_RSS_RDF', 65);
/**
* Non-RDF-based RSS (truly intended as syndication format)
*/
define('SIMPLEPIE_TYPE_RSS_SYNDICATION', 190);
/**
* All RSS
*/
define('SIMPLEPIE_TYPE_RSS_ALL', 255);
/**
* Atom 0.3
*/
define('SIMPLEPIE_TYPE_ATOM_03', 256);
/**
* Atom 1.0
*/
define('SIMPLEPIE_TYPE_ATOM_10', 512);
/**
* All Atom
*/
define('SIMPLEPIE_TYPE_ATOM_ALL', 768);
/**
* All feed types
*/
define('SIMPLEPIE_TYPE_ALL', 1023);
/**
* No construct
*/
define('SIMPLEPIE_CONSTRUCT_NONE', 0);
/**
* Text construct
*/
define('SIMPLEPIE_CONSTRUCT_TEXT', 1);
/**
* HTML construct
*/
define('SIMPLEPIE_CONSTRUCT_HTML', 2);
/**
* XHTML construct
*/
define('SIMPLEPIE_CONSTRUCT_XHTML', 4);
/**
* base64-encoded construct
*/
define('SIMPLEPIE_CONSTRUCT_BASE64', 8);
/**
* IRI construct
*/
define('SIMPLEPIE_CONSTRUCT_IRI', 16);
/**
* A construct that might be HTML
*/
define('SIMPLEPIE_CONSTRUCT_MAYBE_HTML', 32);
/**
* All constructs
*/
define('SIMPLEPIE_CONSTRUCT_ALL', 63);
/**
* Don't change case
*/
define('SIMPLEPIE_SAME_CASE', 1);
/**
* Change to lowercase
*/
define('SIMPLEPIE_LOWERCASE', 2);
/**
* Change to uppercase
*/
define('SIMPLEPIE_UPPERCASE', 4);
/**
* PCRE for HTML attributes
*/
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]*');
/**
* PCRE for XML attributes
*/
define('SIMPLEPIE_PCRE_XML_ATTRIBUTE', '((?:\s+(?:(?:[^\s:]+:)?[^\s:]+)\s*=\s*(?:"(?:[^"]*)"|\'(?:[^\']*)\'))*)\s*');
/**
* XML Namespace
*/
define('SIMPLEPIE_NAMESPACE_XML', 'http://www.w3.org/XML/1998/namespace');
/**
* Atom 1.0 Namespace
*/
define('SIMPLEPIE_NAMESPACE_ATOM_10', 'http://www.w3.org/2005/Atom');
/**
* Atom 0.3 Namespace
*/
define('SIMPLEPIE_NAMESPACE_ATOM_03', 'http://purl.org/atom/ns#');
/**
* RDF Namespace
*/
define('SIMPLEPIE_NAMESPACE_RDF', 'http://www.w3.org/1999/02/22-rdf-syntax-ns#');
/**
* RSS 0.90 Namespace
*/
define('SIMPLEPIE_NAMESPACE_RSS_090', 'http://my.netscape.com/rdf/simple/0.9/');
/**
* RSS 1.0 Namespace
*/
define('SIMPLEPIE_NAMESPACE_RSS_10', 'http://purl.org/rss/1.0/');
/**
* RSS 1.0 Content Module Namespace
*/
define('SIMPLEPIE_NAMESPACE_RSS_10_MODULES_CONTENT', 'http://purl.org/rss/1.0/modules/content/');
/**
* RSS 2.0 Namespace
* (Stupid, I know, but I'm certain it will confuse people less with support.)
*/
define('SIMPLEPIE_NAMESPACE_RSS_20', '');
/**
* DC 1.0 Namespace
*/
define('SIMPLEPIE_NAMESPACE_DC_10', 'http://purl.org/dc/elements/1.0/');
/**
* DC 1.1 Namespace
*/
define('SIMPLEPIE_NAMESPACE_DC_11', 'http://purl.org/dc/elements/1.1/');
/**
* W3C Basic Geo (WGS84 lat/long) Vocabulary Namespace
*/
define('SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO', 'http://www.w3.org/2003/01/geo/wgs84_pos#');
/**
* GeoRSS Namespace
*/
define('SIMPLEPIE_NAMESPACE_GEORSS', 'http://www.georss.org/georss');
/**
* Media RSS Namespace
*/
define('SIMPLEPIE_NAMESPACE_MEDIARSS', 'http://search.yahoo.com/mrss/');
/**
* Wrong Media RSS Namespace
*/
define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG', 'http://search.yahoo.com/mrss');
/**
* iTunes RSS Namespace
*/
define('SIMPLEPIE_NAMESPACE_ITUNES', 'http://www.itunes.com/dtds/podcast-1.0.dtd');
/**
* XHTML Namespace
*/
define('SIMPLEPIE_NAMESPACE_XHTML', 'http://www.w3.org/1999/xhtml');
/**
* IANA Link Relations Registry
*/
define('SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY', 'http://www.iana.org/assignments/relation/');
/**
* Whether we're running on PHP5
*/
define('SIMPLEPIE_PHP5', version_compare(PHP_VERSION, '5.0.0', '>='));
/**
* No file source
*/
define('SIMPLEPIE_FILE_SOURCE_NONE', 0);
/**
* Remote file source
*/
define('SIMPLEPIE_FILE_SOURCE_REMOTE', 1);
/**
* Local file source
*/
define('SIMPLEPIE_FILE_SOURCE_LOCAL', 2);
/**
* fsockopen() file source
*/
define('SIMPLEPIE_FILE_SOURCE_FSOCKOPEN', 4);
/**
* cURL file source
*/
define('SIMPLEPIE_FILE_SOURCE_CURL', 8);
/**
* file_get_contents() file source
*/
define('SIMPLEPIE_FILE_SOURCE_FILE_GET_CONTENTS', 16);
/**
* SimplePie
*
* @package SimplePie
*/
class SimplePie
{
/**
* @var array Raw data
* @access private
*/
var $data = array();
/**
* @var mixed Error string
* @access private
*/
var $error;
/**
* @var object Instance of SimplePie_Sanitize (or other class)
* @see SimplePie::set_sanitize_class()
* @access private
*/
var $sanitize;
/**
* @var string SimplePie Useragent
* @see SimplePie::set_useragent()
* @access private
*/
var $useragent = SIMPLEPIE_USERAGENT;
/**
* @var string Feed URL
* @see SimplePie::set_feed_url()
* @access private
*/
var $feed_url;
/**
* @var object Instance of SimplePie_File to use as a feed
* @see SimplePie::set_file()
* @access private
*/
var $file;
/**
* @var string Raw feed data
* @see SimplePie::set_raw_data()
* @access private
*/
var $raw_data;
/**
* @var int Timeout for fetching remote files
* @see SimplePie::set_timeout()
* @access private
*/
var $timeout = 10;
/**
* @var bool Forces fsockopen() to be used for remote files instead
* of cURL, even if a new enough version is installed
* @see SimplePie::force_fsockopen()
* @access private
*/
var $force_fsockopen = false;
/**
* @var bool Force the given data/URL to be treated as a feed no matter what
* it appears like
* @see SimplePie::force_feed()
* @access private
*/
var $force_feed = false;
/**
* @var bool Enable/Disable XML dump
* @see SimplePie::enable_xml_dump()
* @access private
*/
var $xml_dump = false;
/**
* @var bool Enable/Disable Caching
* @see SimplePie::enable_cache()
* @access private
*/
var $cache = true;
/**
* @var int Cache duration (in seconds)
* @see SimplePie::set_cache_duration()
* @access private
*/
var $cache_duration = 3600;
/**
* @var int Auto-discovery cache duration (in seconds)
* @see SimplePie::set_autodiscovery_cache_duration()
* @access private
*/
var $autodiscovery_cache_duration = 604800; // 7 Days.
/**
* @var string Cache location (relative to executing script)
* @see SimplePie::set_cache_location()
* @access private
*/
var $cache_location = './cache';
/**
* @var string Function that creates the cache filename
* @see SimplePie::set_cache_name_function()
* @access private
*/
var $cache_name_function = 'md5';
/**
* @var bool Reorder feed by date descending
* @see SimplePie::enable_order_by_date()
* @access private
*/
var $order_by_date = true;
/**
* @var mixed Force input encoding to be set to the follow value
* (false, or anything type-cast to false, disables this feature)
* @see SimplePie::set_input_encoding()
* @access private
*/
var $input_encoding = false;
/**
* @var int Feed Autodiscovery Level
* @see SimplePie::set_autodiscovery_level()
* @access private
*/
var $autodiscovery = SIMPLEPIE_LOCATOR_ALL;
/**
* @var string Class used for caching feeds
* @see SimplePie::set_cache_class()
* @access private
*/
var $cache_class = 'SimplePie_Cache';
/**
* @var string Class used for locating feeds
* @see SimplePie::set_locator_class()
* @access private
*/
var $locator_class = 'SimplePie_Locator';
/**
* @var string Class used for parsing feeds
* @see SimplePie::set_parser_class()
* @access private
*/
var $parser_class = 'SimplePie_Parser';
/**
* @var string Class used for fetching feeds
* @see SimplePie::set_file_class()
* @access private
*/
var $file_class = 'SimplePie_File';
/**
* @var string Class used for items
* @see SimplePie::set_item_class()
* @access private
*/
var $item_class = 'SimplePie_Item';
/**
* @var string Class used for authors
* @see SimplePie::set_author_class()
* @access private
*/
var $author_class = 'SimplePie_Author';
/**
* @var string Class used for categories
* @see SimplePie::set_category_class()
* @access private
*/
var $category_class = 'SimplePie_Category';
/**
* @var string Class used for enclosures
* @see SimplePie::set_enclosures_class()
* @access private
*/
var $enclosure_class = 'SimplePie_Enclosure';
/**
* @var string Class used for Media RSS <media:text> captions
* @see SimplePie::set_caption_class()
* @access private
*/
var $caption_class = 'SimplePie_Caption';
/**
* @var string Class used for Media RSS <media:copyright>
* @see SimplePie::set_copyright_class()
* @access private
*/
var $copyright_class = 'SimplePie_Copyright';
/**
* @var string Class used for Media RSS <media:credit>
* @see SimplePie::set_credit_class()
* @access private
*/
var $credit_class = 'SimplePie_Credit';
/**
* @var string Class used for Media RSS <media:rating>
* @see SimplePie::set_rating_class()
* @access private
*/
var $rating_class = 'SimplePie_Rating';
/**
* @var string Class used for Media RSS <media:restriction>
* @see SimplePie::set_restriction_class()
* @access private
*/
var $restriction_class = 'SimplePie_Restriction';
/**
* @var string Class used for content-type sniffing
* @see SimplePie::set_content_type_sniffer_class()
* @access private
*/
var $content_type_sniffer_class = 'SimplePie_Content_Type_Sniffer';
/**
* @var string Class used for item sources.
* @see SimplePie::set_source_class()
* @access private
*/
var $source_class = 'SimplePie_Source';
/**
* @var mixed Set javascript query string parameter (false, or
* anything type-cast to false, disables this feature)
* @see SimplePie::set_javascript()
* @access private
*/
var $javascript = 'js';
/**
* @var int Maximum number of feeds to check with autodiscovery
* @see SimplePie::set_max_checked_feeds()
* @access private
*/
var $max_checked_feeds = 10;
/**
* @var array All the feeds found during the autodiscovery process
* @see SimplePie::get_all_discovered_feeds()
* @access private
*/
var $all_discovered_feeds = array();
/**
* @var string Web-accessible path to the handler_favicon.php file.
* @see SimplePie::set_favicon_handler()
* @access private
*/
var $favicon_handler = '';
/**
* @var string Web-accessible path to the handler_image.php file.
* @see SimplePie::set_image_handler()
* @access private
*/
var $image_handler = '';
/**
* @var array Stores the URLs when multiple feeds are being initialized.
* @see SimplePie::set_feed_url()
* @access private
*/
var $multifeed_url = array();
/**
* @var array Stores SimplePie objects when multiple feeds initialized.
* @access private
*/
var $multifeed_objects = array();
/**
* @var array Stores the get_object_vars() array for use with multifeeds.
* @see SimplePie::set_feed_url()
* @access private
*/
var $config_settings = null;
/**
* @var integer Stores the number of items to return per-feed with multifeeds.
* @see SimplePie::set_item_limit()
* @access private
*/
var $item_limit = 0;
/**
* @var array Stores the default attributes to be stripped by strip_attributes().
* @see SimplePie::strip_attributes()
* @access private
*/
var $strip_attributes = array('bgsound', 'class', 'expr', 'id', 'style', 'onclick', 'onerror', 'onfinish', 'onmouseover', 'onmouseout', 'onfocus', 'onblur', 'lowsrc', 'dynsrc');
/**
* @var array Stores the default tags to be stripped by strip_htmltags().
* @see SimplePie::strip_htmltags()
* @access private
*/
var $strip_htmltags = array('base', 'blink', 'body', 'doctype', 'embed', 'font', 'form', 'frame', 'frameset', 'html', 'iframe', 'input', 'marquee', 'meta', 'noscript', 'object', 'param', 'script', 'style');
/**
* The SimplePie class contains feed level data and options
*
* There are two ways that you can create a new SimplePie object. The first
* is by passing a feed URL as a parameter to the SimplePie constructor
* (as well as optionally setting the cache location and cache expiry). This
* will initialise the whole feed with all of the default settings, and you
* can begin accessing methods and properties immediately.
*
* The second way is to create the SimplePie object with no parameters
* at all. This will enable you to set configuration options. After setting
* them, you must initialise the feed using $feed->init(). At that point the
* object's methods and properties will be available to you. This format is
* what is used throughout this documentation.
*
* @access public
* @since 1.0 Preview Release
* @param string $feed_url This is the URL you want to parse.
* @param string $cache_location This is where you want the cache to be stored.
* @param int $cache_duration This is the number of seconds that you want to store the cache file for.
*/
function SimplePie($feed_url = null, $cache_location = null, $cache_duration = null)
{
// Other objects, instances created here so we can set options on them
$this->sanitize = new SimplePie_Sanitize;
// Set options if they're passed to the constructor
if ($cache_location !== null)
{
$this->set_cache_location($cache_location);
}
if ($cache_duration !== null)
{
$this->set_cache_duration($cache_duration);
}
// Only init the script if we're passed a feed URL
if ($feed_url !== null)
{
$this->set_feed_url($feed_url);
$this->init();
}
}
/**
* Used for converting object to a string
*/
function __toString()
{
return md5(serialize($this->data));
}
/**
* Remove items that link back to this before destroying this object
*/
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']);
}
}
}
/**
* Force the given data/URL to be treated as a feed no matter what it
* appears like
*
* @access public
* @since 1.1
* @param bool $enable Force the given data/URL to be treated as a feed
*/
function force_feed($enable = false)
{
$this->force_feed = (bool) $enable;
}
/**
* This is the URL of the feed you want to parse.
*
* This allows you to enter the URL of the feed you want to parse, or the
* website you want to try to use auto-discovery on. This takes priority
* over any set raw data.
*
* You can set multiple feeds to mash together by passing an array instead
* of a string for the $url. Remember that with each additional feed comes
* additional processing and resources.
*
* @access public
* @since 1.0 Preview Release
* @param mixed $url This is the URL (or array of URLs) that you want to parse.
* @see SimplePie::set_raw_data()
*/
function set_feed_url($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);
}
}
/**
* Provides an instance of SimplePie_File to use as a feed
*
* @access public
* @param object &$file Instance of SimplePie_File (or subclass)
* @return bool True on success, false on failure
*/
function set_file(&$file)
{
if (is_a($file, 'SimplePie_File'))
{
$this->feed_url = $file->url;
$this->file =& $file;
return true;
}
return false;
}
/**
* Allows you to use a string of RSS/Atom data instead of a remote feed.
*
* If you have a feed available as a string in PHP, you can tell SimplePie
* to parse that data string instead of a remote feed. Any set feed URL
* takes precedence.
*
* @access public
* @since 1.0 Beta 3
* @param string $data RSS or Atom data as a string.
* @see SimplePie::set_feed_url()
*/
function set_raw_data($data)
{
$this->raw_data = $data;
}
/**
* Allows you to override the default timeout for fetching remote feeds.
*
* This allows you to change the maximum time the feed's server to respond
* and send the feed back.
*
* @access public
* @since 1.0 Beta 3
* @param int $timeout The maximum number of seconds to spend waiting to retrieve a feed.
*/
function set_timeout($timeout = 10)
{
$this->timeout = (int) $timeout;
}
/**
* Forces SimplePie to use fsockopen() instead of the preferred cURL
* functions.
*
* @access public
* @since 1.0 Beta 3
* @param bool $enable Force fsockopen() to be used
*/
function force_fsockopen($enable = false)
{
$this->force_fsockopen = (bool) $enable;
}
/**
* Outputs the raw XML content of the feed, after it has gone through
* SimplePie's filters.
*
* Used only for debugging, this function will output the XML content as
* text/xml. When SimplePie reads in a feed, it does a bit of cleaning up
* before trying to parse it. Many parts of the feed are re-written in
* memory, and in the end, you have a parsable feed. XML dump shows you the
* actual XML that SimplePie tries to parse, which may or may not be very
* different from the original feed.
*
* @access public
* @since 1.0 Preview Release
* @param bool $enable Enable XML dump
*/
function enable_xml_dump($enable = false)
{
$this->xml_dump = (bool) $enable;
}
/**
* Enables/disables caching in SimplePie.
*
* This option allows you to disable caching all-together in SimplePie.
* However, disabling the cache can lead to longer load times.
*
* @access public
* @since 1.0 Preview Release
* @param bool $enable Enable caching
*/
function enable_cache($enable = true)
{
$this->cache = (bool) $enable;
}
/**
* Set the length of time (in seconds) that the contents of a feed
* will be cached.
*
* @access public
* @param int $seconds The feed content cache duration.
*/
function set_cache_duration($seconds = 3600)
{
$this->cache_duration = (int) $seconds;
}
/**
* Set the length of time (in seconds) that the autodiscovered feed
* URL will be cached.
*
* @access public
* @param int $seconds The autodiscovered feed URL cache duration.
*/
function set_autodiscovery_cache_duration($seconds = 604800)
{
$this->autodiscovery_cache_duration = (int) $seconds;
}
/**
* Set the file system location where the cached files should be stored.
*
* @access public
* @param string $location The file system location.
*/
function set_cache_location($location = './cache')
{
$this->cache_location = (string) $location;
}
/**
* Determines whether feed items should be sorted into reverse chronological order.
*
* @access public
* @param bool $enable Sort as reverse chronological order.
*/
function enable_order_by_date($enable = true)
{
$this->order_by_date = (bool) $enable;
}
/**
* Allows you to override the character encoding reported by the feed.
*
* @access public
* @param string $encoding Character encoding.
*/
function set_input_encoding($encoding = false)
{
if ($encoding)
{
$this->input_encoding = (string) $encoding;
}
else
{
$this->input_encoding = false;
}
}
/**
* Set how much feed autodiscovery to do
*
* @access public
* @see SIMPLEPIE_LOCATOR_NONE
* @see SIMPLEPIE_LOCATOR_AUTODISCOVERY
* @see SIMPLEPIE_LOCATOR_LOCAL_EXTENSION
* @see SIMPLEPIE_LOCATOR_LOCAL_BODY
* @see SIMPLEPIE_LOCATOR_REMOTE_EXTENSION
* @see SIMPLEPIE_LOCATOR_REMOTE_BODY
* @see SIMPLEPIE_LOCATOR_ALL
* @param int $level Feed Autodiscovery Level (level can be a
* combination of the above constants, see bitwise OR operator)
*/
function set_autodiscovery_level($level = SIMPLEPIE_LOCATOR_ALL)
{
$this->autodiscovery = (int) $level;
}
/**
* Allows you to change which class SimplePie uses for caching.
* Useful when you are overloading or extending SimplePie's default classes.
*
* @access public
* @param string $class Name of custom class.
* @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
* @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
*/
function set_cache_class($class = 'SimplePie_Cache')
{
if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Cache'))
{
$this->cache_class = $class;
return true;
}
return false;
}
/**
* Allows you to change which class SimplePie uses for auto-discovery.
* Useful when you are overloading or extending SimplePie's default classes.
*
* @access public
* @param string $class Name of custom class.
* @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
* @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
*/
function set_locator_class($class = 'SimplePie_Locator')
{
if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Locator'))
{
$this->locator_class = $class;
return true;
}
return false;
}
/**
* Allows you to change which class SimplePie uses for XML parsing.
* Useful when you are overloading or extending SimplePie's default classes.
*
* @access public
* @param string $class Name of custom class.
* @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
* @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
*/
function set_parser_class($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 change which class SimplePie uses for content-type sniffing.
* Useful when you are overloading or extending SimplePie's default classes.
*
* @access public
* @param string $class Name of custom class.
* @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
* @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
*/
function set_content_type_sniffer_class($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;
}
/**
* Allows you to change which class SimplePie uses item sources.
* Useful when you are overloading or extending SimplePie's default classes.
*
* @access public
* @param string $class Name of custom class.
* @link http://php.net/manual/en/keyword.extends.php PHP4 extends documentation
* @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
*/
function set_source_class($class = 'SimplePie_Source')
{
if (SimplePie_Misc::is_subclass_of($class, 'SimplePie_Source'))
{
$this->source_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 = '';
}
}
/**
* Set the limit for items returned per-feed with multifeeds.
*
* @access public
* @param integer $limit The maximum number of items to return.
*/
function set_item_limit($limit = 0)
{
$this->item_limit = (int) $limit;
}
function init()
{
// Check absolute bare minimum requirements.
if ((function_exists('version_compare') && version_compare(PHP_VERSION, '4.3.0', '<')) || !extension_loaded('xml') || !extension_loaded('pcre'))
{
return false;
}
// Then check the xml extension is sane (i.e., libxml 2.7.x issue on PHP < 5.2.9 and libxml 2.7.0 to 2.7.2 on any version) if we don't have xmlreader.
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;
}
// 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'] !== '')
{
$cache = call_user_func(array($this->cache_class, 'create'), $this->cache_location, call_user_func($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;
$this->data = array();
}
// If we've got a non feed_url stored (if the page isn't actually a feed, or is a redirect) use that URL.
elseif (isset($this->data['feed_url']))
{
// If the autodiscovery cache is still valid use it.
if ($cache->mtime() + $this->autodiscovery_cache_duration > time())
{
// Do not need to do feed autodiscovery yet.
if ($this->data['feed_url'] === $this->data['url'])
{
$cache->unlink();
$this->data = array();
}
else
{
$this->set_feed_url($this->data['feed_url']);
return $this->init();
}
}
}
// Check if the cache has been updated
elseif ($cache->mtime() + $this->cache_duration < time())
{
// If we have last-modified and/or etag set
if (isset($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);
}
}
}
// If the cache is still valid, just return true
else
{
return true;
}
}
// If the cache is empty, delete it
else
{
$cache->unlink();
$this->data = array();
}
}
// If we don't already have the file (it'll only exist if we've opened it to check if the cache has been modified), open it.
if (!isset($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, $this->force_fsockopen);
}
}
// If the file connection has an error, set SimplePie::error to that and quit
if (!$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)
{
// Check if the supplied URL is a feed, if it isn't, look for it.
$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($file))
{
// We need to unset this so that if SimplePie::set_file() has been called that object is untouched
unset($file);
if ($file = $locate->find($this->autodiscovery, $this->all_discovered_feeds))
{
if ($cache)
{
$this->data = array('url' => $this->feed_url, 'feed_url' => $file->url, 'build' => SIMPLEPIE_BUILD);
if (!$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;
}
// Set up array of possible encodings
$encodings = array();
// First check to see if input has been overridden.
if ($this->input_encoding !== false)
{
$encodings[] = $this->input_encoding;
}
$application_types = array('application/xml', 'application/xml-dtd', 'application/xml-external-parsed-entity');
$text_types = array('text/xml', 'text/xml-external-parsed-entity');
// RFC 3023 (only applies to sniffed content)
if (isset($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];
}
$encodings[] = 'US-ASCII';
}
// Text MIME-type default
elseif (substr($sniffed, 0, 5) === 'text/')
{
$encodings[] = 'US-ASCII';
}
}
// Fallback to XML 1.0 Appendix F.1/UTF-8/ISO-8859-1
$encodings = array_merge($encodings, SimplePie_Misc::xml_encoding($data));
$encodings[] = 'UTF-8';
$encodings[] = 'ISO-8859-1';
// There's no point in trying an encoding twice
$encodings = array_unique($encodings);
// If we want the XML, just output that with the most likely encoding and quit
if ($this->xml_dump)
{
header('Content-type: text/xml; charset=' . $encodings[0]);
echo $data;
exit;
}
// Loop through each possible encoding, till we return something, or run out of possibilities
foreach ($encodings as $encoding)
{
// Change the encoding to UTF-8 (as we always use UTF-8 internally)
if ($utf8_data = SimplePie_Misc::change_encoding($data, $encoding, 'UTF-8'))
{
// Create new parser
$parser = new $this->parser_class();
// If it's parsed fine
if ($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;
}
$this->data['build'] = SIMPLEPIE_BUILD;
// Cache the file if caching is enabled
if ($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))
{
// We have an error, just set SimplePie_Misc::error to it and quit
$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)
{
if (SIMPLEPIE_PHP5)
{
// This keyword needs to defy coding standards for PHP4 compatibility
$this->multifeed_objects[$i] = clone($this);
}
else
{
$this->multifeed_objects[$i] = $this;
}
$this->multifeed_objects[$i]->set_feed_url($url);
$success |= $this->multifeed_objects[$i]->init();
$i++;
}
return (bool) $success;
}
else
{
return false;
}
}
/**
* Return the error message for the occured error
*
* @access public
* @return string Error message
*/
function error()
{
return $this->error;
}
function get_encoding()
{
return $this->sanitize->output_encoding;
}
function handle_content_type($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);
}
}
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 $this->data['type'];
}
/**
* Returns the URL for the favicon of the feed's website.
*
* @todo Cache atom:icon
* @access public
* @since 1.0
*/
function get_favicon()
{
if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'icon'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
}
elseif (($url = $this->get_link()) !== null && preg_match('/^http(s)?:\/\//i', $url))
{
$favicon = SimplePie_Misc::absolutize_url('/favicon.ico', $url);
if ($this->cache && $this->favicon_handler)
{
$favicon_filename = call_user_func($this->cache_name_function, $favicon);
$cache = call_user_func(array($this->cache_class, 'create'), $this->cache_location, $favicon_filename, 'spi');
if ($cache->load())
{
return $this->sanitize($this->favicon_handler . $favicon_filename, SIMPLEPIE_CONSTRUCT_IRI);
}
else
{
$file = new $this->file_class($favicon, $this->timeout / 10, 5, array('X-FORWARDED-FOR' => $_SERVER['REMOTE_ADDR']), $this->useragent, $this->force_fsockopen);
if ($file->success && ($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($file->status_code === 200 || $file->status_code > 206 && $file->status_code < 300)) && strlen($file->body) > 0)
{
$sniffer = new $this->content_type_sniffer_class($file);
if (substr($sniffer->get_type(), 0, 6) === 'image/')
{
if ($cache->save(array('headers' => $file->headers, 'body' => $file->body)))
{
return $this->sanitize($this->favicon_handler . $favicon_filename, SIMPLEPIE_CONSTRUCT_IRI);
}
else
{
trigger_error("$cache->name 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 $this->sanitize($favicon, SIMPLEPIE_CONSTRUCT_IRI);
}
}
// not an image
else
{
return false;
}
}
}
}
else
{
return $this->sanitize($favicon, SIMPLEPIE_CONSTRUCT_IRI);
}
}
return false;
}
/**
* @todo If we have a perm redirect we should return the new URL
* @todo When we make the above change, let's support <itunes:new-feed-url> as well
* @todo Also, |atom:link|@rel=self
*/
function subscribe_url()
{
if ($this->feed_url !== null)
{
return $this->sanitize($this->feed_url, SIMPLEPIE_CONSTRUCT_IRI);
}
else
{
return null;
}
}
function subscribe_feed()
{
if ($this->feed_url !== null)
{
return $this->sanitize(SimplePie_Misc::fix_protocol($this->feed_url, 2), SIMPLEPIE_CONSTRUCT_IRI);
}
else
{
return null;
}
}
function subscribe_outlook()
{
if ($this->feed_url !== null)
{
return $this->sanitize('outlook' . SimplePie_Misc::fix_protocol($this->feed_url, 2), SIMPLEPIE_CONSTRUCT_IRI);
}
else
{
return null;
}
}
function subscribe_podcast()
{
if ($this->feed_url !== null)
{
return $this->sanitize(SimplePie_Misc::fix_protocol($this->feed_url, 3), SIMPLEPIE_CONSTRUCT_IRI);
}
else
{
return null;
}
}
function subscribe_itunes()
{
if ($this->feed_url !== null)
{
return $this->sanitize(SimplePie_Misc::fix_protocol($this->feed_url, 4), SIMPLEPIE_CONSTRUCT_IRI);
}
else
{
return null;
}
}
/**
* Creates the subscribe_* methods' return data
*
* @access private
* @param string $feed_url String to prefix to the feed URL
* @param string $site_url String to prefix to the site URL (and
* suffix to the feed URL)
* @return mixed URL if feed exists, false otherwise
*/
function subscribe_service($feed_url, $site_url = null)
{
if ($this->subscribe_url())
{
$return = $feed_url . rawurlencode($this->feed_url);
if ($site_url !== null && $this->get_link() !== null)
{
$return .= $site_url . rawurlencode($this->get_link());
}
return $this->sanitize($return, SIMPLEPIE_CONSTRUCT_IRI);
}
else
{
return null;
}
}
function subscribe_aol()
{
return $this->subscribe_service('http://feeds.my.aol.com/add.jsp?url=');
}
function subscribe_bloglines()
{
return $this->subscribe_service('http://www.bloglines.com/sub/');
}
function subscribe_eskobo()
{
return $this->subscribe_service('http://www.eskobo.com/?AddToMyPage=');
}
function subscribe_feedfeeds()
{
return $this->subscribe_service('http://www.feedfeeds.com/add?feed=');
}
function subscribe_feedster()
{
return $this->subscribe_service('http://www.feedster.com/myfeedster.php?action=addrss&confirm=no&rssurl=');
}
function subscribe_google()
{
return $this->subscribe_service('http://fusion.google.com/add?feedurl=');
}
function subscribe_gritwire()
{
return $this->subscribe_service('http://my.gritwire.com/feeds/addExternalFeed.aspx?FeedUrl=');
}
function subscribe_msn()
{
return $this->subscribe_service('http://my.msn.com/addtomymsn.armx?id=rss&ut=', '&ru=');
}
function subscribe_netvibes()
{
return $this->subscribe_service('http://www.netvibes.com/subscribe.php?url=');
}
function subscribe_newsburst()
{
return $this->subscribe_service('http://www.newsburst.com/Source/?add=');
}
function subscribe_newsgator()
{
return $this->subscribe_service('http://www.newsgator.com/ngs/subscriber/subext.aspx?url=');
}
function subscribe_odeo()
{
return $this->subscribe_service('http://www.odeo.com/listen/subscribe?feed=');
}
function subscribe_podnova()
{
return $this->subscribe_service('http://www.podnova.com/index_your_podcasts.srf?action=add&url=');
}
function subscribe_rojo()
{
return $this->subscribe_service('http://www.rojo.com/add-subscription?resource=');
}
function subscribe_yahoo()
{
return $this->subscribe_service('http://add.my.yahoo.com/rss?url=');
}
function get_feed_tags($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][$tag];
}
}
return null;
}
function get_channel_tags($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][$tag];
}
}
}
return null;
}
function get_image_tags($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][$tag];
}
}
}
return null;
}
function get_base($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 $this->subscribe_url();
}
}
function sanitize($data, $type, $base = '')
{
return $this->sanitize->sanitize($data, $type, $base);
}
function get_title()
{
if ($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;
}
}
function get_category($key = 0)
{
$categories = $this->get_categories();
if (isset($categories[$key]))
{
return $categories[$key];
}
else
{
return null;
}
}
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)
{
// This is really the label, but keep this as the term also for BC.
// Label will also work on retrieving because that falls back to term.
$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($categories);
}
else
{
return null;
}
}
function get_author($key = 0)
{
$authors = $this->get_authors();
if (isset($authors[$key]))
{
return $authors[$key];
}
else
{
return null;
}
}
function get_authors()
{
$authors = array();
foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'author') as $author)
{
$name = null;
$uri = null;
$email = null;
$avatar = null;
if (isset($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 (isset($author['child']['http://purl.org/macgirvin/dfrn/1.0']['avatar'][0]['data']))
{
$avatar = $this->sanitize($$author['child']['http://purl.org/macgirvin/dfrn/1.0']['avatar'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author['child']['http://purl.org/macgirvin/dfrn/1.0']['avatar'][0]));
}
if ($name !== null || $email !== null || $uri !== null || $avatar !== null)
{
$authors[] = new $this->author_class($name, $uri, $email, $avatar);
}
}
if ($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($authors);
}
else
{
return null;
}
}
function get_contributor($key = 0)
{
$contributors = $this->get_contributors();
if (isset($contributors[$key]))
{
return $contributors[$key];
}
else
{
return null;
}
}
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($contributors);
}
else
{
return null;
}
}
function get_link($key = 0, $rel = 'alternate')
{
$links = $this->get_links($rel);
if (isset($links[$key]))
{
return $links[$key];
}
else
{
return null;
}
}
/**
* Added for parity between the parent-level and the item/entry-level.
*/
function get_permalink()
{
return $this->get_link(0);
}
function get_links($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']['']['rel'] : 'alternate';
$this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));
}
}
}
if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'link'))
{
foreach ($links as $link)
{
if (isset($link['attribs']['']['href']))
{
$link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
$this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));
}
}
}
if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'link'))
{
$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
}
if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'link'))
{
$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
}
if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'link'))
{
$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
}
$keys = array_keys($this->data['links']);
foreach ($keys as $key)
{
if (SimplePie_Misc::is_isegment_nz_nc($key))
{
if (isset($this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]))
{
$this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key] = array_merge($this->data['links'][$key], $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]);
$this->data['links'][$key] =& $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key];
}
else
{
$this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key] =& $this->data['links'][$key];
}
}
elseif (substr($key, 0, 41) === SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY)
{
$this->data['links'][substr($key, 41)] =& $this->data['links'][$key];
}
$this->data['links'][$key] = array_unique($this->data['links'][$key]);
}
}
if (isset($this->data['links'][$rel]))
{
return $this->data['links'][$rel];
}
else
{
return null;
}
}
function get_all_discovered_feeds()
{
return $this->all_discovered_feeds;
}
function get_description()
{
if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'subtitle'))
{
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, 'tagline'))
{
return $this->sanitize($return[0]['data'], SimplePie_Misc::atom_03_construct_type($return[0]['attribs']), $this->get_base($return[0]));