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| Current File : /www/wwwroot/wellwisehub.org/wp-includes/SimplePie/src/SimplePie.php |
<?php
/**
* SimplePie
*
* A PHP-Based RSS and Atom Feed Framework.
* Takes the hard work out of managing a complete RSS/Atom solution.
*
* Copyright (c) 2004-2022, Ryan Parman, Sam 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
* @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue
* @author Ryan Parman
* @author Sam Sneddon
* @author Ryan McCue
* @link http://simplepie.org/ SimplePie
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
*/
namespace SimplePie;
use InvalidArgumentException;
use Psr\SimpleCache\CacheInterface;
use SimplePie\Cache\Base;
use SimplePie\Cache\BaseDataCache;
use SimplePie\Cache\CallableNameFilter;
use SimplePie\Cache\DataCache;
use SimplePie\Cache\NameFilter;
use SimplePie\Cache\Psr16;
use SimplePie\Content\Type\Sniffer;
/**
* SimplePie
*
* @package SimplePie
* @subpackage API
*/
class SimplePie
{
/**
* SimplePie Name
*/
public const NAME = 'SimplePie';
/**
* SimplePie Version
*/
public const VERSION = '1.8.0';
/**
* SimplePie Website URL
*/
public const URL = 'http://simplepie.org';
/**
* SimplePie Linkback
*/
public const LINKBACK = '<a href="' . self::URL . '" title="' . self::NAME . ' ' . self::VERSION . '">' . self::NAME . '</a>';
/**
* No Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
public const LOCATOR_NONE = 0;
/**
* Feed Link Element Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
public const LOCATOR_AUTODISCOVERY = 1;
/**
* Local Feed Extension Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
public const LOCATOR_LOCAL_EXTENSION = 2;
/**
* Local Feed Body Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
public const LOCATOR_LOCAL_BODY = 4;
/**
* Remote Feed Extension Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
public const LOCATOR_REMOTE_EXTENSION = 8;
/**
* Remote Feed Body Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
public const LOCATOR_REMOTE_BODY = 16;
/**
* All Feed Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
public const LOCATOR_ALL = 31;
/**
* No known feed type
*/
public const TYPE_NONE = 0;
/**
* RSS 0.90
*/
public const TYPE_RSS_090 = 1;
/**
* RSS 0.91 (Netscape)
*/
public const TYPE_RSS_091_NETSCAPE = 2;
/**
* RSS 0.91 (Userland)
*/
public const TYPE_RSS_091_USERLAND = 4;
/**
* RSS 0.91 (both Netscape and Userland)
*/
public const TYPE_RSS_091 = 6;
/**
* RSS 0.92
*/
public const TYPE_RSS_092 = 8;
/**
* RSS 0.93
*/
public const TYPE_RSS_093 = 16;
/**
* RSS 0.94
*/
public const TYPE_RSS_094 = 32;
/**
* RSS 1.0
*/
public const TYPE_RSS_10 = 64;
/**
* RSS 2.0
*/
public const TYPE_RSS_20 = 128;
/**
* RDF-based RSS
*/
public const TYPE_RSS_RDF = 65;
/**
* Non-RDF-based RSS (truly intended as syndication format)
*/
public const TYPE_RSS_SYNDICATION = 190;
/**
* All RSS
*/
public const TYPE_RSS_ALL = 255;
/**
* Atom 0.3
*/
public const TYPE_ATOM_03 = 256;
/**
* Atom 1.0
*/
public const TYPE_ATOM_10 = 512;
/**
* All Atom
*/
public const TYPE_ATOM_ALL = 768;
/**
* All feed types
*/
public const TYPE_ALL = 1023;
/**
* No construct
*/
public const CONSTRUCT_NONE = 0;
/**
* Text construct
*/
public const CONSTRUCT_TEXT = 1;
/**
* HTML construct
*/
public const CONSTRUCT_HTML = 2;
/**
* XHTML construct
*/
public const CONSTRUCT_XHTML = 4;
/**
* base64-encoded construct
*/
public const CONSTRUCT_BASE64 = 8;
/**
* IRI construct
*/
public const CONSTRUCT_IRI = 16;
/**
* A construct that might be HTML
*/
public const CONSTRUCT_MAYBE_HTML = 32;
/**
* All constructs
*/
public const CONSTRUCT_ALL = 63;
/**
* Don't change case
*/
public const SAME_CASE = 1;
/**
* Change to lowercase
*/
public const LOWERCASE = 2;
/**
* Change to uppercase
*/
public const UPPERCASE = 4;
/**
* PCRE for HTML attributes
*/
public const 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
*/
public const PCRE_XML_ATTRIBUTE = '((?:\s+(?:(?:[^\s:]+:)?[^\s:]+)\s*=\s*(?:"(?:[^"]*)"|\'(?:[^\']*)\'))*)\s*';
/**
* XML Namespace
*/
public const NAMESPACE_XML = 'http://www.w3.org/XML/1998/namespace';
/**
* Atom 1.0 Namespace
*/
public const NAMESPACE_ATOM_10 = 'http://www.w3.org/2005/Atom';
/**
* Atom 0.3 Namespace
*/
public const NAMESPACE_ATOM_03 = 'http://purl.org/atom/ns#';
/**
* RDF Namespace
*/
public const NAMESPACE_RDF = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
/**
* RSS 0.90 Namespace
*/
public const NAMESPACE_RSS_090 = 'http://my.netscape.com/rdf/simple/0.9/';
/**
* RSS 1.0 Namespace
*/
public const NAMESPACE_RSS_10 = 'http://purl.org/rss/1.0/';
/**
* RSS 1.0 Content Module Namespace
*/
public const 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.)
*/
public const NAMESPACE_RSS_20 = '';
/**
* DC 1.0 Namespace
*/
public const NAMESPACE_DC_10 = 'http://purl.org/dc/elements/1.0/';
/**
* DC 1.1 Namespace
*/
public const NAMESPACE_DC_11 = 'http://purl.org/dc/elements/1.1/';
/**
* W3C Basic Geo (WGS84 lat/long) Vocabulary Namespace
*/
public const NAMESPACE_W3C_BASIC_GEO = 'http://www.w3.org/2003/01/geo/wgs84_pos#';
/**
* GeoRSS Namespace
*/
public const NAMESPACE_GEORSS = 'http://www.georss.org/georss';
/**
* Media RSS Namespace
*/
public const NAMESPACE_MEDIARSS = 'http://search.yahoo.com/mrss/';
/**
* Wrong Media RSS Namespace. Caused by a long-standing typo in the spec.
*/
public const NAMESPACE_MEDIARSS_WRONG = 'http://search.yahoo.com/mrss';
/**
* Wrong Media RSS Namespace #2. New namespace introduced in Media RSS 1.5.
*/
public const NAMESPACE_MEDIARSS_WRONG2 = 'http://video.search.yahoo.com/mrss';
/**
* Wrong Media RSS Namespace #3. A possible typo of the Media RSS 1.5 namespace.
*/
public const NAMESPACE_MEDIARSS_WRONG3 = 'http://video.search.yahoo.com/mrss/';
/**
* Wrong Media RSS Namespace #4. New spec location after the RSS Advisory Board takes it over, but not a valid namespace.
*/
public const NAMESPACE_MEDIARSS_WRONG4 = 'http://www.rssboard.org/media-rss';
/**
* Wrong Media RSS Namespace #5. A possible typo of the RSS Advisory Board URL.
*/
public const NAMESPACE_MEDIARSS_WRONG5 = 'http://www.rssboard.org/media-rss/';
/**
* iTunes RSS Namespace
*/
public const NAMESPACE_ITUNES = 'http://www.itunes.com/dtds/podcast-1.0.dtd';
/**
* XHTML Namespace
*/
public const NAMESPACE_XHTML = 'http://www.w3.org/1999/xhtml';
/**
* IANA Link Relations Registry
*/
public const IANA_LINK_RELATIONS_REGISTRY = 'http://www.iana.org/assignments/relation/';
/**
* No file source
*/
public const FILE_SOURCE_NONE = 0;
/**
* Remote file source
*/
public const FILE_SOURCE_REMOTE = 1;
/**
* Local file source
*/
public const FILE_SOURCE_LOCAL = 2;
/**
* fsockopen() file source
*/
public const FILE_SOURCE_FSOCKOPEN = 4;
/**
* cURL file source
*/
public const FILE_SOURCE_CURL = 8;
/**
* file_get_contents() file source
*/
public const FILE_SOURCE_FILE_GET_CONTENTS = 16;
/**
* @var array Raw data
* @access private
*/
public $data = [];
/**
* @var mixed Error string
* @access private
*/
public $error;
/**
* @var int HTTP status code
* @see SimplePie::status_code()
* @access private
*/
public $status_code = 0;
/**
* @var object Instance of \SimplePie\Sanitize (or other class)
* @see SimplePie::set_sanitize_class()
* @access private
*/
public $sanitize;
/**
* @var string SimplePie Useragent
* @see SimplePie::set_useragent()
* @access private
*/
public $useragent = '';
/**
* @var string Feed URL
* @see SimplePie::set_feed_url()
* @access private
*/
public $feed_url;
/**
* @var string Original feed URL, or new feed URL iff HTTP 301 Moved Permanently
* @see SimplePie::subscribe_url()
* @access private
*/
public $permanent_url = null;
/**
* @var object Instance of \SimplePie\File to use as a feed
* @see SimplePie::set_file()
* @access private
*/
public $file;
/**
* @var string Raw feed data
* @see SimplePie::set_raw_data()
* @access private
*/
public $raw_data;
/**
* @var int Timeout for fetching remote files
* @see SimplePie::set_timeout()
* @access private
*/
public $timeout = 10;
/**
* @var array Custom curl options
* @see SimplePie::set_curl_options()
* @access private
*/
public $curl_options = [];
/**
* @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
*/
public $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
*/
public $force_feed = false;
/**
* @var bool Enable/Disable Caching
* @see SimplePie::enable_cache()
* @access private
*/
private $enable_cache = true;
/**
* @var DataCache|null
* @see SimplePie::set_cache()
*/
private $cache = null;
/**
* @var NameFilter
* @see SimplePie::set_cache_namefilter()
*/
private $cache_namefilter;
/**
* @var bool Force SimplePie to fallback to expired cache, if enabled,
* when feed is unavailable.
* @see SimplePie::force_cache_fallback()
* @access private
*/
public $force_cache_fallback = false;
/**
* @var int Cache duration (in seconds)
* @see SimplePie::set_cache_duration()
* @access private
*/
public $cache_duration = 3600;
/**
* @var int Auto-discovery cache duration (in seconds)
* @see SimplePie::set_autodiscovery_cache_duration()
* @access private
*/
public $autodiscovery_cache_duration = 604800; // 7 Days.
/**
* @var string Cache location (relative to executing script)
* @see SimplePie::set_cache_location()
* @access private
*/
public $cache_location = './cache';
/**
* @var string Function that creates the cache filename
* @see SimplePie::set_cache_name_function()
* @access private
*/
public $cache_name_function = 'md5';
/**
* @var bool Reorder feed by date descending
* @see SimplePie::enable_order_by_date()
* @access private
*/
public $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
*/
public $input_encoding = false;
/**
* @var int Feed Autodiscovery Level
* @see SimplePie::set_autodiscovery_level()
* @access private
*/
public $autodiscovery = self::LOCATOR_ALL;
/**
* Class registry object
*
* @var \SimplePie\Registry
*/
public $registry;
/**
* @var int Maximum number of feeds to check with autodiscovery
* @see SimplePie::set_max_checked_feeds()
* @access private
*/
public $max_checked_feeds = 10;
/**
* @var array All the feeds found during the autodiscovery process
* @see SimplePie::get_all_discovered_feeds()
* @access private
*/
public $all_discovered_feeds = [];
/**
* @var string Web-accessible path to the handler_image.php file.
* @see SimplePie::set_image_handler()
* @access private
*/
public $image_handler = '';
/**
* @var array Stores the URLs when multiple feeds are being initialized.
* @see SimplePie::set_feed_url()
* @access private
*/
public $multifeed_url = [];
/**
* @var array Stores SimplePie objects when multiple feeds initialized.
* @access private
*/
public $multifeed_objects = [];
/**
* @var array Stores the get_object_vars() array for use with multifeeds.
* @see SimplePie::set_feed_url()
* @access private
*/
public $config_settings = null;
/**
* @var integer Stores the number of items to return per-feed with multifeeds.
* @see SimplePie::set_item_limit()
* @access private
*/
public $item_limit = 0;
/**
* @var bool Stores if last-modified and/or etag headers were sent with the
* request when checking a feed.
*/
public $check_modified = false;
/**
* @var array Stores the default attributes to be stripped by strip_attributes().
* @see SimplePie::strip_attributes()
* @access private
*/
public $strip_attributes = ['bgsound', 'class', 'expr', 'id', 'style', 'onclick', 'onerror', 'onfinish', 'onmouseover', 'onmouseout', 'onfocus', 'onblur', 'lowsrc', 'dynsrc'];
/**
* @var array Stores the default attributes to add to different tags by add_attributes().
* @see SimplePie::add_attributes()
* @access private
*/
public $add_attributes = ['audio' => ['preload' => 'none'], 'iframe' => ['sandbox' => 'allow-scripts allow-same-origin'], 'video' => ['preload' => 'none']];
/**
* @var array Stores the default tags to be stripped by strip_htmltags().
* @see SimplePie::strip_htmltags()
* @access private
*/
public $strip_htmltags = ['base', 'blink', 'body', 'doctype', 'embed', 'font', 'form', 'frame', 'frameset', 'html', 'iframe', 'input', 'marquee', 'meta', 'noscript', 'object', 'param', 'script', 'style'];
/**
* @var array Stores the default attributes to be renamed by rename_attributes().
* @see SimplePie::rename_attributes()
* @access private
*/
public $rename_attributes = [];
/**
* @var bool Should we throw exceptions, or use the old-style error property?
* @access private
*/
public $enable_exceptions = false;
/**
* The SimplePie class contains feed level data and options
*
* To use SimplePie, create the SimplePie object with no parameters. You can
* then set configuration options using the provided methods. 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.
*
* Previously, it was possible to pass in the feed URL along with cache
* options directly into the constructor. This has been removed as of 1.3 as
* it caused a lot of confusion.
*
* @since 1.0 Preview Release
*/
public function __construct()
{
if (version_compare(PHP_VERSION, '7.2', '<')) {
exit('Please upgrade to PHP 7.2 or newer.');
}
$this->set_useragent();
$this->set_cache_namefilter(new CallableNameFilter($this->cache_name_function));
// Other objects, instances created here so we can set options on them
$this->sanitize = new \SimplePie\Sanitize();
$this->registry = new \SimplePie\Registry();
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_duration() directly.', \E_USER_DEPRECATED);
$args = func_get_args();
switch (count($args)) {
case 3:
$this->set_cache_duration($args[2]);
// no break
case 2:
$this->set_cache_location($args[1]);
// no break
case 1:
$this->set_feed_url($args[0]);
$this->init();
}
}
}
/**
* Used for converting object to a string
*/
public function __toString()
{
return md5(serialize($this->data));
}
/**
* Remove items that link back to this before destroying this object
*/
public function __destruct()
{
if (!gc_enabled()) {
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
*
* This tells SimplePie to ignore the content-type provided by the server.
* Be careful when using this option, as it will also disable autodiscovery.
*
* @since 1.1
* @param bool $enable Force the given data/URL to be treated as a feed
*/
public function force_feed($enable = false)
{
$this->force_feed = (bool) $enable;
}
/**
* Set 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.
*
* @since 1.0 Preview Release
* @see set_raw_data()
* @param string|array $url This is the URL (or array of URLs) that you want to parse.
*/
public function set_feed_url($url)
{
$this->multifeed_url = [];
if (is_array($url)) {
foreach ($url as $value) {
$this->multifeed_url[] = $this->registry->call(Misc::class, 'fix_protocol', [$value, 1]);
}
} else {
$this->feed_url = $this->registry->call(Misc::class, 'fix_protocol', [$url, 1]);
$this->permanent_url = $this->feed_url;
}
}
/**
* Set an instance of {@see \SimplePie\File} to use as a feed
*
* @param \SimplePie\File &$file
* @return bool True on success, false on failure
*/
public function set_file(&$file)
{
if ($file instanceof \SimplePie\File) {
$this->feed_url = $file->url;
$this->permanent_url = $this->feed_url;
$this->file = &$file;
return true;
}
return false;
}
/**
* Set the raw XML data to parse
*
* 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.
*
* @since 1.0 Beta 3
* @param string $data RSS or Atom data as a string.
* @see set_feed_url()
*/
public function set_raw_data($data)
{
$this->raw_data = $data;
}
/**
* Set 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.
*
* @since 1.0 Beta 3
* @param int $timeout The maximum number of seconds to spend waiting to retrieve a feed.
*/
public function set_timeout($timeout = 10)
{
$this->timeout = (int) $timeout;
}
/**
* Set custom curl options
*
* This allows you to change default curl options
*
* @since 1.0 Beta 3
* @param array $curl_options Curl options to add to default settings
*/
public function set_curl_options(array $curl_options = [])
{
$this->curl_options = $curl_options;
}
/**
* Force SimplePie to use fsockopen() instead of cURL
*
* @since 1.0 Beta 3
* @param bool $enable Force fsockopen() to be used
*/
public function force_fsockopen($enable = false)
{
$this->force_fsockopen = (bool) $enable;
}
/**
* Enable/disable caching in SimplePie.
*
* This option allows you to disable caching all-together in SimplePie.
* However, disabling the cache can lead to longer load times.
*
* @since 1.0 Preview Release
* @param bool $enable Enable caching
*/
public function enable_cache($enable = true)
{
$this->enable_cache = (bool) $enable;
}
/**
* Set a PSR-16 implementation as cache
*
* @param CacheInterface $psr16cache The PSR-16 cache implementation
*
* @return void
*/
public function set_cache(CacheInterface $cache)
{
$this->cache = new Psr16($cache);
}
/**
* SimplePie to continue to fall back to expired cache, if enabled, when
* feed is unavailable.
*
* This tells SimplePie to ignore any file errors and fall back to cache
* instead. This only works if caching is enabled and cached content
* still exists.
*
* @deprecated since SimplePie 1.8.0, expired cache will not be used anymore.
*
* @param bool $enable Force use of cache on fail.
*/
public function force_cache_fallback($enable = false)
{
// @trigger_error(sprintf('SimplePie\SimplePie::force_cache_fallback() is deprecated since SimplePie 1.8.0, expired cache will not be used anymore.'), \E_USER_DEPRECATED);
$this->force_cache_fallback = (bool) $enable;
}
/**
* Set the length of time (in seconds) that the contents of a feed will be
* cached
*
* @param int $seconds The feed content cache duration
*/
public function set_cache_duration($seconds = 3600)
{
$this->cache_duration = (int) $seconds;
}
/**
* Set the length of time (in seconds) that the autodiscovered feed URL will
* be cached
*
* @param int $seconds The autodiscovered feed URL cache duration.
*/
public function set_autodiscovery_cache_duration($seconds = 604800)
{
$this->autodiscovery_cache_duration = (int) $seconds;
}
/**
* Set the file system location where the cached files should be stored
*
* @deprecated since SimplePie 1.8.0, use \SimplePie\SimplePie::set_cache() instead.
*
* @param string $location The file system location.
*/
public function set_cache_location($location = './cache')
{
// @trigger_error(sprintf('SimplePie\SimplePie::set_cache_location() is deprecated since SimplePie 1.8.0, please use "SimplePie\SimplePie::set_cache()" instead.'), \E_USER_DEPRECATED);
$this->cache_location = (string) $location;
}
/**
* Return the filename (i.e. hash, without path and without extension) of the file to cache a given URL.
*
* @param string $url The URL of the feed to be cached.
* @return string A filename (i.e. hash, without path and without extension).
*/
public function get_cache_filename($url)
{
// Append custom parameters to the URL to avoid cache pollution in case of multiple calls with different parameters.
$url .= $this->force_feed ? '#force_feed' : '';
$options = [];
if ($this->timeout != 10) {
$options[CURLOPT_TIMEOUT] = $this->timeout;
}
if ($this->useragent !== \SimplePie\Misc::get_default_useragent()) {
$options[CURLOPT_USERAGENT] = $this->useragent;
}
if (!empty($this->curl_options)) {
foreach ($this->curl_options as $k => $v) {
$options[$k] = $v;
}
}
if (!empty($options)) {
ksort($options);
$url .= '#' . urlencode(var_export($options, true));
}
return $this->cache_namefilter->filter($url);
}
/**
* Set whether feed items should be sorted into reverse chronological order
*
* @param bool $enable Sort as reverse chronological order.
*/
public function enable_order_by_date($enable = true)
{
$this->order_by_date = (bool) $enable;
}
/**
* Set the character encoding used to parse the feed
*
* This overrides the encoding reported by the feed, however it will fall
* back to the normal encoding detection if the override fails
*
* @param string $encoding Character encoding
*/
public function set_input_encoding($encoding = false)
{
if ($encoding) {
$this->input_encoding = (string) $encoding;
} else {
$this->input_encoding = false;
}
}
/**
* Set how much feed autodiscovery to do
*
* @see \SimplePie\SimplePie::LOCATOR_NONE
* @see \SimplePie\SimplePie::LOCATOR_AUTODISCOVERY
* @see \SimplePie\SimplePie::LOCATOR_LOCAL_EXTENSION
* @see \SimplePie\SimplePie::LOCATOR_LOCAL_BODY
* @see \SimplePie\SimplePie::LOCATOR_REMOTE_EXTENSION
* @see \SimplePie\SimplePie::LOCATOR_REMOTE_BODY
* @see \SimplePie\SimplePie::LOCATOR_ALL
* @param int $level Feed Autodiscovery Level (level can be a combination of the above constants, see bitwise OR operator)
*/
public function set_autodiscovery_level($level = self::LOCATOR_ALL)
{
$this->autodiscovery = (int) $level;
}
/**
* Get the class registry
*
* Use this to override SimplePie's default classes
* @see \SimplePie\Registry
*
* @return Registry
*/
public function &get_registry()
{
return $this->registry;
}
/**
* Set which class SimplePie uses for caching
*
* @deprecated since SimplePie 1.3, use {@see set_cache()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_cache_class($class = Cache::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::set_cache()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Cache::class, $class, true);
}
/**
* Set which class SimplePie uses for auto-discovery
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_locator_class($class = Locator::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Locator::class, $class, true);
}
/**
* Set which class SimplePie uses for XML parsing
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_parser_class($class = Parser::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Parser::class, $class, true);
}
/**
* Set which class SimplePie uses for remote file fetching
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_file_class($class = File::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(File::class, $class, true);
}
/**
* Set which class SimplePie uses for data sanitization
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_sanitize_class($class = Sanitize::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Sanitize::class, $class, true);
}
/**
* Set which class SimplePie uses for handling feed items
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_item_class($class = Item::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Item::class, $class, true);
}
/**
* Set which class SimplePie uses for handling author data
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_author_class($class = Author::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Author::class, $class, true);
}
/**
* Set which class SimplePie uses for handling category data
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_category_class($class = Category::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Category::class, $class, true);
}
/**
* Set which class SimplePie uses for feed enclosures
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_enclosure_class($class = Enclosure::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Enclosure::class, $class, true);
}
/**
* Set which class SimplePie uses for `<media:text>` captions
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_caption_class($class = Caption::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Caption::class, $class, true);
}
/**
* Set which class SimplePie uses for `<media:copyright>`
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_copyright_class($class = Copyright::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Copyright::class, $class, true);
}
/**
* Set which class SimplePie uses for `<media:credit>`
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_credit_class($class = Credit::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Credit::class, $class, true);
}
/**
* Set which class SimplePie uses for `<media:rating>`
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_rating_class($class = Rating::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Rating::class, $class, true);
}
/**
* Set which class SimplePie uses for `<media:restriction>`
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_restriction_class($class = Restriction::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Restriction::class, $class, true);
}
/**
* Set which class SimplePie uses for content-type sniffing
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_content_type_sniffer_class($class = Sniffer::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Sniffer::class, $class, true);
}
/**
* Set which class SimplePie uses item sources
*
* @deprecated since SimplePie 1.3, use {@see get_registry()} instead
*
* @param string $class Name of custom class
*
* @return boolean True on success, false otherwise
*/
public function set_source_class($class = Source::class)
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.3, please use "SimplePie\SimplePie::get_registry()" instead.', __METHOD__), \E_USER_DEPRECATED);
return $this->registry->register(Source::class, $class, true);
}
/**
* Set the user agent string
*
* @param string $ua New user agent string.
*/
public function set_useragent($ua = null)
{
if ($ua === null) {
$ua = \SimplePie\Misc::get_default_useragent();
}
$this->useragent = (string) $ua;
}
/**
* Set a namefilter to modify the cache filename with
*
* @param NameFilter $filter
*
* @return void
*/
public function set_cache_namefilter(NameFilter $filter): void
{
$this->cache_namefilter = $filter;
}
/**
* Set callback function to create cache filename with
*
* @deprecated since SimplePie 1.8.0, use {@see set_cache_namefilter()} instead
*
* @param mixed $function Callback function
*/
public function set_cache_name_function($function = 'md5')
{
// trigger_error(sprintf('"%s()" is deprecated since SimplePie 1.8.0, please use "SimplePie\SimplePie::set_cache_namefilter()" instead.', __METHOD__), \E_USER_DEPRECATED);
if (is_callable($function)) {
$this->cache_name_function = $function;
$this->set_cache_namefilter(new CallableNameFilter($this->cache_name_function));
}
}
/**
* Set options to make SP as fast as possible
*
* Forgoes a substantial amount of data sanitization in favor of speed. This
* turns SimplePie into a dumb parser of feeds.
*
* @param bool $set Whether to set them or not
*/
public function set_stupidly_fast($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->add_attributes(false);
$this->set_image_handler(false);
$this->set_https_domains([]);
}
}
/**
* Set maximum number of feeds to check with autodiscovery
*
* @param int $max Maximum number of feeds to check
*/
public function set_max_checked_feeds($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 rename_attributes($attribs = '')
{
if ($attribs === '') {
$attribs = $this->rename_attributes;
}
$this->sanitize->rename_attributes($attribs);
}
public function strip_attributes($attribs = '')
{
if ($attribs === '') {
$attribs = $this->strip_attributes;
}
$this->sanitize->strip_attributes($attribs);
}
public function add_attributes($attribs = '')
{
if ($attribs === '') {
$attribs = $this->add_attributes;
}
$this->sanitize->add_attributes($attribs);
}
/**
* Set the output encoding
*
* Allows you to override SimplePie's output to match that of your webpage.
* This is useful for times when your webpages are not being served as
* UTF-8. This setting will be obeyed by {@see handle_content_type()}, and
* is similar to {@see set_input_encoding()}.
*
* It should be noted, however, that not all character encodings can support
* all characters. If your page is being served as ISO-8859-1 and you try
* to display a Japanese feed, you'll likely see garbled characters.
* Because of this, it is highly recommended to ensure that your webpages
* are served as UTF-8.
*
* The number of supported character encodings depends on whether your web
* host supports {@link http://php.net/mbstring mbstring},
* {@link http://php.net/iconv iconv}, or both. See
* {@link http://simplepie.org/wiki/faq/Supported_Character_Encodings} for
* more information.
*
* @param string $encoding
*/
public function set_output_encoding($encoding = 'UTF-8')
{
$this->sanitize->set_output_encoding($encoding);
}
public function strip_comments($strip = false)
{
$this->sanitize->strip_comments($strip);
}
/**
* Set element/attribute key/value pairs of HTML attributes
* containing URLs that need to be resolved relative to the feed
*
* Defaults to |a|@href, |area|@href, |blockquote|@cite, |del|@cite,
* |form|@action, |img|@longdesc, |img|@src, |input|@src, |ins|@cite,
* |q|@cite
*
* @since 1.0
* @param array|null $element_attribute Element/attribute key/value pairs, null for default
*/
public function set_url_replacements($element_attribute = null)
{
$this->sanitize->set_url_replacements($element_attribute);
}
/**
* Set the list of domains for which to force HTTPS.
* @see \SimplePie\Sanitize::set_https_domains()
* @param array List of HTTPS domains. Example array('biz', 'example.com', 'example.org', 'www.example.net').
*/
public function set_https_domains($domains = [])
{
if (is_array($domains)) {
$this->sanitize->set_https_domains($domains);
}
}
/**
* Set the handler to enable the display of cached images.
*
* @param string $page Web-accessible path to the handler_image.php file.
* @param string $qs The query string that the value should be passed to.
*/
public function set_image_handler($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
*
* @param integer $limit The maximum number of items to return.
*/
public function set_item_limit($limit = 0)
{
$this->item_limit = (int) $limit;
}
/**
* Enable throwing exceptions
*
* @param boolean $enable Should we throw exceptions, or use the old-style error property?
*/
public function enable_exceptions($enable = true)
{
$this->enable_exceptions = $enable;
}
/**
* Initialize the feed object
*
* This is what makes everything happen. Period. This is where all of the
* configuration options get processed, feeds are fetched, cached, and
* parsed, and all of that other good stuff.
*
* @return boolean True if successful, false otherwise
*/
public function init()
{
// Check absolute bare minimum requirements.
if (!extension_loaded('xml') || !extension_loaded('pcre')) {
$this->error = 'XML or PCRE extensions not loaded!';
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>&</foo>', $values);
xml_parser_free($parser_check);
$xml_is_sane = isset($values[0]['value']);
}
if (!$xml_is_sane) {
return false;
}
}
// The default sanitize class gets set in the constructor, check if it has
// changed.
if ($this->registry->get_class(Sanitize::class) !== 'SimplePie\Sanitize') {
$this->sanitize = $this->registry->create(Sanitize::class);
}
if (method_exists($this->sanitize, 'set_registry')) {
$this->sanitize->set_registry($this->registry);
}
// Pass whatever was set with config options over to the sanitizer.
// Pass the classes in for legacy support; new classes should use the registry instead
$this->sanitize->pass_cache_data(
$this->enable_cache,
$this->cache_location,
$this->cache_namefilter,
$this->registry->get_class(Cache::class),
$this->cache
);
$this->sanitize->pass_file_data($this->registry->get_class(File::class), $this->timeout, $this->useragent, $this->force_fsockopen, $this->curl_options);
if (!empty($this->multifeed_url)) {
$i = 0;
$success = 0;
$this->multifeed_objects = [];
$this->error = [];
foreach ($this->multifeed_url as $url) {
$this->multifeed_objects[$i] = clone $this;
$this->multifeed_objects[$i]->set_feed_url($url);
$single_success = $this->multifeed_objects[$i]->init();
$success |= $single_success;
if (!$single_success) {
$this->error[$i] = $this->multifeed_objects[$i]->error();
}
$i++;
}
return (bool) $success;
} elseif ($this->feed_url === null && $this->raw_data === null) {
return false;
}
$this->error = null;
$this->data = [];
$this->check_modified = false;
$this->multifeed_objects = [];
$cache = false;
if ($this->feed_url !== null) {
$parsed_feed_url = $this->registry->call(Misc::class, 'parse_url', [$this->feed_url]);
// Decide whether to enable caching
if ($this->enable_cache && $parsed_feed_url['scheme'] !== '') {
$cache = $this->get_cache($this->feed_url);
}
// Fetch the data via \SimplePie\File into $this->raw_data
if (($fetched = $this->fetch_data($cache)) === true) {
return true;
} elseif ($fetched === false) {
return false;
}
[$headers, $sniffed] = $fetched;
}
// Empty response check
if (empty($this->raw_data)) {
$this->error = "A feed could not be found at `$this->feed_url`. Empty body.";
$this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, __FILE__, __LINE__]);
return false;
}
// Set up array of possible encodings
$encodings = [];
// First check to see if input has been overridden.
if ($this->input_encoding !== false) {
$encodings[] = strtoupper($this->input_encoding);
}
$application_types = ['application/xml', 'application/xml-dtd', 'application/xml-external-parsed-entity'];
$text_types = ['text/xml', 'text/xml-external-parsed-entity'];
// RFC 3023 (only applies to sniffed content)
if (isset($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, $this->registry->call(Misc::class, 'xml_encoding', [$this->raw_data, &$this->registry]));
$encodings[] = 'UTF-8';
} elseif (in_array($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)) {
$encodings[] = strtoupper($charset[1]);
}
$encodings[] = 'US-ASCII';
}
// Text MIME-type default
elseif (substr($sniffed, 0, 5) === 'text/') {
$encodings[] = 'UTF-8';
}
}
// Fallback to XML 1.0 Appendix F.1/UTF-8/ISO-8859-1
$encodings = array_merge($encodings, $this->registry->call(Misc::class, 'xml_encoding', [$this->raw_data, &$this->registry]));
$encodings[] = 'UTF-8';
$encodings[] = 'ISO-8859-1';
// There's no point in trying an encoding twice
$encodings = array_unique($encodings);
// 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 = $this->registry->call(Misc::class, 'change_encoding', [$this->raw_data, $encoding, 'UTF-8'])) {
// Create new parser
$parser = $this->registry->create(Parser::class);
// If it's parsed fine
if ($parser->parse($utf8_data, 'UTF-8', $this->permanent_url)) {
$this->data = $parser->get_data();
if (!($this->get_type() & ~self::TYPE_NONE)) {
$this->error = "A feed could not be found at `$this->feed_url`. This does not appear to be a valid RSS or Atom feed.";
$this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, __FILE__, __LINE__]);
return false;
}
if (isset($headers)) {
$this->data['headers'] = $headers;
}
$this->data['build'] = \SimplePie\Misc::get_build();
// Cache the file if caching is enabled
$this->data['cache_expiration_time'] = $this->cache_duration + time();
if ($cache && !$cache->set_data($this->get_cache_filename($this->feed_url), $this->data, $this->cache_duration)) {
trigger_error("$this->cache_location is not writable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
}
return true;
}
}
}
if (isset($parser)) {
// We have an error, just set \SimplePie\Misc::error to it and quit
$this->error = $this->feed_url;
$this->error .= sprintf(' is invalid XML, 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.';
if (!extension_loaded('mbstring') && !extension_loaded('iconv') && !class_exists('\UConverter')) {
$this->error .= ' You MUST have either the iconv, mbstring or intl (PHP 5.5+) extension installed and enabled.';
} else {
$missingExtensions = [];
if (!extension_loaded('iconv')) {
$missingExtensions[] = 'iconv';
}
if (!extension_loaded('mbstring')) {
$missingExtensions[] = 'mbstring';
}
if (!class_exists('\UConverter')) {
$missingExtensions[] = 'intl (PHP 5.5+)';
}
$this->error .= ' Try installing/enabling the ' . implode(' or ', $missingExtensions) . ' extension.';
}
}
$this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, __FILE__, __LINE__]);
return false;
}
/**
* Fetch the data via \SimplePie\File
*
* If the data is already cached, attempt to fetch it from there instead
* @param Base|DataCache|false $cache Cache handler, or false to not load from the cache
* @return array|true Returns true if the data was loaded from the cache, or an array of HTTP headers and sniffed type
*/
protected function fetch_data(&$cache)
{
if (is_object($cache) && $cache instanceof Base) {
// @trigger_error(sprintf('Providing $cache as "\SimplePie\Cache\Base" in %s() is deprecated since SimplePie 1.8.0, please provide "\SimplePie\Cache\DataCache" implementation instead.', __METHOD__), \E_USER_DEPRECATED);
$cache = new BaseDataCache($cache);
}
if ($cache !== false && !$cache instanceof DataCache) {
throw new InvalidArgumentException(sprintf(
'%s(): Argument #1 ($cache) must be of type %s|false',
__METHOD__,
DataCache::class
), 1);
}
$cacheKey = $this->get_cache_filename($this->feed_url);
// If it's enabled, use the cache
if ($cache) {
// Load the Cache
$this->data = $cache->get_data($cacheKey, []);
if (!empty($this->data)) {
// If the cache is for an outdated build of SimplePie
if (!isset($this->data['build']) || $this->data['build'] !== \SimplePie\Misc::get_build()) {
$cache->delete_data($cacheKey);
$this->data = [];
}
// If we've hit a collision just rerun it with caching disabled
elseif (isset($this->data['url']) && $this->data['url'] !== $this->feed_url) {
$cache = false;
$this->data = [];
}
// If we've got a non feed_url stored (if the page isn't actually a feed, or is a redirect) use that URL.
elseif (isset($this->data['feed_url'])) {
// Do not need to do feed autodiscovery yet.
if ($this->data['feed_url'] !== $this->data['url']) {
$this->set_feed_url($this->data['feed_url']);
$this->data['url'] = $this->data['feed_url'];
$cache->set_data($this->get_cache_filename($this->feed_url), $this->data, $this->autodiscovery_cache_duration);
return $this->init();
}
$cache->delete_data($this->get_cache_filename($this->feed_url));
$this->data = [];
}
// Check if the cache has been updated
elseif (isset($this->data['cache_expiration_time']) && $this->data['cache_expiration_time'] > time()) {
// Want to know if we tried to send last-modified and/or etag headers
// when requesting this file. (Note that it's up to the file to
// support this, but we don't always send the headers either.)
$this->check_modified = true;
if (isset($this->data['headers']['last-modified']) || isset($this->data['headers']['etag'])) {
$headers = [
'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
];
if (isset($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 = $this->registry->create(File::class, [$this->feed_url, $this->timeout / 10, 5, $headers, $this->useragent, $this->force_fsockopen, $this->curl_options]);
$this->status_code = $file->status_code;
if ($file->success) {
if ($file->status_code === 304) {
// Set raw_data to false here too, to signify that the cache
// is still valid.
$this->raw_data = false;
$cache->set_data($cacheKey, $this->data, $this->cache_duration);
return true;
}
} else {
$this->check_modified = false;
if ($this->force_cache_fallback) {
$cache->set_data($cacheKey, $this->data, $this->cache_duration);
return true;
}
unset($file);
}
}
}
// If the cache is still valid, just return true
else {
$this->raw_data = false;
return true;
}
}
// If the cache is empty
else {
$this->data = [];
}
}
// If we don't already have the file (it'll only exist if we've opened it to check if the cache has been modified), open it.
if (!isset($file)) {
if ($this->file instanceof \SimplePie\File && $this->file->url === $this->feed_url) {
$file = &$this->file;
} else {
$headers = [
'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
];
$file = $this->registry->create(File::class, [$this->feed_url, $this->timeout, 5, $headers, $this->useragent, $this->force_fsockopen, $this->curl_options]);
}
}
$this->status_code = $file->status_code;
// If the file connection has an error, set SimplePie::error to that and quit
if (!$file->success && !($file->method & self::FILE_SOURCE_REMOTE === 0 || ($file->status_code === 200 || $file->status_code > 206 && $file->status_code < 300))) {
$this->error = $file->error;
return !empty($this->data);
}
if (!$this->force_feed) {
// Check if the supplied URL is a feed, if it isn't, look for it.
$locate = $this->registry->create(Locator::class, [&$file, $this->timeout, $this->useragent, $this->max_checked_feeds, $this->force_fsockopen, $this->curl_options]);
if (!$locate->is_feed($file)) {
$copyStatusCode = $file->status_code;
$copyContentType = $file->headers['content-type'];
try {
$microformats = false;
if (class_exists('DOMXpath') && function_exists('Mf2\parse')) {
$doc = new \DOMDocument();
@$doc->loadHTML($file->body);
$xpath = new \DOMXpath($doc);
// Check for both h-feed and h-entry, as both a feed with no entries
// and a list of entries without an h-feed wrapper are both valid.
$query = '//*[contains(concat(" ", @class, " "), " h-feed ") or '.
'contains(concat(" ", @class, " "), " h-entry ")]';
$result = $xpath->query($query);
$microformats = $result->length !== 0;
}
// Now also do feed discovery, but if microformats were found don't
// overwrite the current value of file.
$discovered = $locate->find(
$this->autodiscovery,
$this->all_discovered_feeds
);
if ($microformats) {
if ($hub = $locate->get_rel_link('hub')) {
$self = $locate->get_rel_link('self');
$this->store_links($file, $hub, $self);
}
// Push the current file onto all_discovered feeds so the user can
// be shown this as one of the options.
if (isset($this->all_discovered_feeds)) {
$this->all_discovered_feeds[] = $file;
}
} else {
if ($discovered) {
$file = $discovered;
} else {
// We need to unset this so that if SimplePie::set_file() has
// been called that object is untouched
unset($file);
$this->error = "A feed could not be found at `$this->feed_url`; the status code is `$copyStatusCode` and content-type is `$copyContentType`";
$this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, __FILE__, __LINE__]);
return false;
}
}
} catch (\SimplePie\Exception $e) {
// We need to unset this so that if SimplePie::set_file() has been called that object is untouched
unset($file);
// This is usually because DOMDocument doesn't exist
$this->error = $e->getMessage();
$this->registry->call(Misc::class, 'error', [$this->error, E_USER_NOTICE, $e->getFile(), $e->getLine()]);
return false;
}
if ($cache) {
$this->data = [
'url' => $this->feed_url,
'feed_url' => $file->url,
'build' => \SimplePie\Misc::get_build(),
'cache_expiration_time' => $this->cache_duration + time(),
];
if (!$cache->set_data($cacheKey, $this->data, $this->cache_duration)) {
trigger_error("$this->cache_location is not writable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
}
}
}
$this->feed_url = $file->url;
$locate = null;
}
$this->raw_data = $file->body;
$this->permanent_url = $file->permanent_url;
$headers = $file->headers;
$sniffer = $this->registry->create(Sniffer::class, [&$file]);
$sniffed = $sniffer->get_type();
return [$headers, $sniffed];
}
/**
* Get the error message for the occurred error
*
* @return string|array Error message, or array of messages for multifeeds
*/
public function error()
{
return $this->error;
}
/**
* Get the last HTTP status code
*
* @return int Status code
*/
public function status_code()
{
return $this->status_code;
}
/**
* Get the raw XML
*
* This is the same as the old `$feed->enable_xml_dump(true)`, but returns
* the data instead of printing it.
*
* @return string|boolean Raw XML data, false if the cache is used
*/
public function get_raw_data()
{
return $this->raw_data;
}
/**
* Get the character encoding used for output
*
* @since Preview Release
* @return string
*/
public function get_encoding()
{
return $this->sanitize->output_encoding;
}
/**
* Send the content-type header with correct encoding
*
* This method ensures that the SimplePie-enabled page is being served with
* the correct {@link http://www.iana.org/assignments/media-types/ mime-type}
* and character encoding HTTP headers (character encoding determined by the
* {@see set_output_encoding} config option).
*
* This won't work properly if any content or whitespace has already been
* sent to the browser, because it relies on PHP's
* {@link http://php.net/header header()} function, and these are the
* circumstances under which the function works.
*
* Because it's setting these settings for the entire page (as is the nature
* of HTTP headers), this should only be used once per page (again, at the
* top).
*
* @param string $mime MIME type to serve the page as
*/
public function handle_content_type($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);
}
}
/**
* Get the type of the feed
*
* This returns a \SimplePie\SimplePie::TYPE_* constant, which can be tested against
* using {@link http://php.net/language.operators.bitwise bitwise operators}
*
* @since 0.8 (usage changed to using constants in 1.0)
* @see \SimplePie\SimplePie::TYPE_NONE Unknown.
* @see \SimplePie\SimplePie::TYPE_RSS_090 RSS 0.90.
* @see \SimplePie\SimplePie::TYPE_RSS_091_NETSCAPE RSS 0.91 (Netscape).
* @see \SimplePie\SimplePie::TYPE_RSS_091_USERLAND RSS 0.91 (Userland).
* @see \SimplePie\SimplePie::TYPE_RSS_091 RSS 0.91.
* @see \SimplePie\SimplePie::TYPE_RSS_092 RSS 0.92.
* @see \SimplePie\SimplePie::TYPE_RSS_093 RSS 0.93.
* @see \SimplePie\SimplePie::TYPE_RSS_094 RSS 0.94.
* @see \SimplePie\SimplePie::TYPE_RSS_10 RSS 1.0.
* @see \SimplePie\SimplePie::TYPE_RSS_20 RSS 2.0.x.
* @see \SimplePie\SimplePie::TYPE_RSS_RDF RDF-based RSS.
* @see \SimplePie\SimplePie::TYPE_RSS_SYNDICATION Non-RDF-based RSS (truly intended as syndication format).
* @see \SimplePie\SimplePie::TYPE_RSS_ALL Any version of RSS.
* @see \SimplePie\SimplePie::TYPE_ATOM_03 Atom 0.3.
* @see \SimplePie\SimplePie::TYPE_ATOM_10 Atom 1.0.
* @see \SimplePie\SimplePie::TYPE_ATOM_ALL Any version of Atom.
* @see \SimplePie\SimplePie::TYPE_ALL Any known/supported feed type.
* @return int \SimplePie\SimplePie::TYPE_* constant
*/
public function get_type()
{
if (!isset($this->data['type'])) {
$this->data['type'] = self::TYPE_ALL;
if (isset($this->data['child'][self::NAMESPACE_ATOM_10]['feed'])) {
$this->data['type'] &= self::TYPE_ATOM_10;
} elseif (isset($this->data['child'][self::NAMESPACE_ATOM_03]['feed'])) {
$this->data['type'] &= self::TYPE_ATOM_03;
} elseif (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'])) {
if (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_10]['channel'])
|| isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_10]['image'])
|| isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_10]['item'])
|| isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_10]['textinput'])) {
$this->data['type'] &= self::TYPE_RSS_10;
}
if (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_090]['channel'])
|| isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_090]['image'])
|| isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_090]['item'])
|| isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][self::NAMESPACE_RSS_090]['textinput'])) {
$this->data['type'] &= self::TYPE_RSS_090;
}
} elseif (isset($this->data['child'][self::NAMESPACE_RSS_20]['rss'])) {
$this->data['type'] &= self::TYPE_RSS_ALL;
if (isset($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['attribs']['']['version'])) {
switch (trim($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['attribs']['']['version'])) {
case '0.91':
$this->data['type'] &= self::TYPE_RSS_091;
if (isset($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['child'][self::NAMESPACE_RSS_20]['skiphours']['hour'][0]['data'])) {
switch (trim($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['child'][self::NAMESPACE_RSS_20]['skiphours']['hour'][0]['data'])) {
case '0':
$this->data['type'] &= self::TYPE_RSS_091_NETSCAPE;
break;
case '24':
$this->data['type'] &= self::TYPE_RSS_091_USERLAND;
break;
}
}
break;
case '0.92':
$this->data['type'] &= self::TYPE_RSS_092;
break;
case '0.93':
$this->data['type'] &= self::TYPE_RSS_093;
break;
case '0.94':
$this->data['type'] &= self::TYPE_RSS_094;
break;
case '2.0':
$this->data['type'] &= self::TYPE_RSS_20;
break;
}
}
} else {
$this->data['type'] = self::TYPE_NONE;
}
}
return $this->data['type'];
}
/**
* Get the URL for the feed
*
* When the 'permanent' mode is enabled, returns the original feed URL,
* except in the case of an `HTTP 301 Moved Permanently` status response,
* in which case the location of the first redirection is returned.
*
* When the 'permanent' mode is disabled (default),
* may or may not be different from the URL passed to {@see set_feed_url()},
* depending on whether auto-discovery was used, and whether there were
* any redirects along the way.
*
* @since Preview Release (previously called `get_feed_url()` since SimplePie 0.8.)
* @todo Support <itunes:new-feed-url>
* @todo Also, |atom:link|@rel=self
* @param bool $permanent Permanent mode to return only the original URL or the first redirection
* iff it is a 301 redirection
* @return string|null
*/
public function subscribe_url($permanent = false)
{
if ($permanent) {
if ($this->permanent_url !== null) {
// sanitize encodes ampersands which are required when used in a url.
return str_replace(
'&',
'&',
$this->sanitize(
$this->permanent_url,
self::CONSTRUCT_IRI
)
);
}
} else {
if ($this->feed_url !== null) {
return str_replace(
'&',
'&',
$this->sanitize(
$this->feed_url,
self::CONSTRUCT_IRI
)
);
}
}
return null;
}
/**
* Get data for an feed-level element
*
* This method allows you to get access to ANY element/attribute that is a
* sub-element of the opening feed tag.
*
* The return value is an indexed array of elements matching the given
* namespace and tag name. Each element has `attribs`, `data` and `child`
* subkeys. For `attribs` and `child`, these contain namespace subkeys.
* `attribs` then has one level of associative name => value data (where
* `value` is a string) after the namespace. `child` has tag-indexed keys
* after the namespace, each member of which is an indexed array matching
* this same format.
*
* For example:
* <pre>
* // This is probably a bad example because we already support
* // <media:content> natively, but it shows you how to parse through
* // the nodes.
* $group = $item->get_item_tags(\SimplePie\SimplePie::NAMESPACE_MEDIARSS, 'group');
* $content = $group[0]['child'][\SimplePie\SimplePie::NAMESPACE_MEDIARSS]['content'];
* $file = $content[0]['attribs']['']['url'];
* echo $file;
* </pre>
*
* @since 1.0
* @see http://simplepie.org/wiki/faq/supported_xml_namespaces
* @param string $namespace The URL of the XML namespace of the elements you're trying to access
* @param string $tag Tag name
* @return array
*/
public function get_feed_tags($namespace, $tag)
{
$type = $this->get_type();
if ($type & self::TYPE_ATOM_10) {
if (isset($this->data['child'][self::NAMESPACE_ATOM_10]['feed'][0]['child'][$namespace][$tag])) {
return $this->data['child'][self::NAMESPACE_ATOM_10]['feed'][0]['child'][$namespace][$tag];
}
}
if ($type & self::TYPE_ATOM_03) {
if (isset($this->data['child'][self::NAMESPACE_ATOM_03]['feed'][0]['child'][$namespace][$tag])) {
return $this->data['child'][self::NAMESPACE_ATOM_03]['feed'][0]['child'][$namespace][$tag];
}
}
if ($type & self::TYPE_RSS_RDF) {
if (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][$namespace][$tag])) {
return $this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['child'][$namespace][$tag];
}
}
if ($type & self::TYPE_RSS_SYNDICATION) {
if (isset($this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['child'][$namespace][$tag])) {
return $this->data['child'][self::NAMESPACE_RSS_20]['rss'][0]['child'][$namespace][$tag];
}
}
return null;
}
/**
* Get data for an channel-level element
*
* This method allows you to get access to ANY element/attribute in the
* channel/header section of the feed.
*
* See {@see SimplePie::get_feed_tags()} for a description of the return value
*
* @since 1.0
* @see http://simplepie.org/wiki/faq/supported_xml_namespaces
* @param string $namespace The URL of the XML namespace of the elements you're trying to access
* @param string $tag Tag name
* @return array
*/
public function get_channel_tags($namespace, $tag)
{
$type = $this->get_type();
if ($type & self::TYPE_ATOM_ALL) {
if ($return = $this->get_feed_tags($namespace, $tag)) {
return $return;
}
}
if ($type & self::TYPE_RSS_10) {
if ($channel = $this->get_feed_tags(self::NAMESPACE_RSS_10, 'channel')) {
if (isset($channel[0]['child'][$namespace][$tag])) {
return $channel[0]['child'][$namespace][$tag];
}
}
}
if ($type & self::TYPE_RSS_090) {
if ($channel = $this->get_feed_tags(self::NAMESPACE_RSS_090, 'channel')) {
if (isset($channel[0]['child'][$namespace][$tag])) {
return $channel[0]['child'][$namespace][$tag];
}
}
}
if ($type & self::TYPE_RSS_SYNDICATION) {
if ($channel = $this->get_feed_tags(self::NAMESPACE_RSS_20, 'channel')) {
if (isset($channel[0]['child'][$namespace][$tag])) {
return $channel[0]['child'][$namespace][$tag];
}
}
}
return null;
}
/**
* Get data for an channel-level element
*
* This method allows you to get access to ANY element/attribute in the
* image/logo section of the feed.
*
* See {@see SimplePie::get_feed_tags()} for a description of the return value
*
* @since 1.0
* @see http://simplepie.org/wiki/faq/supported_xml_namespaces
* @param string $namespace The URL of the XML namespace of the elements you're trying to access
* @param string $tag Tag name
* @return array
*/
public function get_image_tags($namespace, $tag)
{
$type = $this->get_type();
if ($type & self::TYPE_RSS_10) {
if ($image = $this->get_feed_tags(self::NAMESPACE_RSS_10, 'image')) {
if (isset($image[0]['child'][$namespace][$tag])) {
return $image[0]['child'][$namespace][$tag];
}
}
}
if ($type & self::TYPE_RSS_090) {
if ($image = $this->get_feed_tags(self::NAMESPACE_RSS_090, 'image')) {
if (isset($image[0]['child'][$namespace][$tag])) {
return $image[0]['child'][$namespace][$tag];
}
}
}
if ($type & self::TYPE_RSS_SYNDICATION) {
if ($image = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'image')) {
if (isset($image[0]['child'][$namespace][$tag])) {
return $image[0]['child'][$namespace][$tag];
}
}
}
return null;
}
/**
* Get the base URL value from the feed
*
* Uses `<xml:base>` if available, otherwise uses the first link in the
* feed, or failing that, the URL of the feed itself.
*
* @see get_link
* @see subscribe_url
*
* @param array $element
* @return string
*/
public function get_base($element = [])
{
if (!empty($element['xml_base_explicit']) && isset($element['xml_base'])) {
return $element['xml_base'];
} elseif ($this->get_link() !== null) {
return $this->get_link();
}
return $this->subscribe_url();
}
/**
* Sanitize feed data
*
* @access private
* @see \SimplePie\Sanitize::sanitize()
* @param string $data Data to sanitize
* @param int $type One of the \SimplePie\SimplePie::CONSTRUCT_* constants
* @param string $base Base URL to resolve URLs against
* @return string Sanitized data
*/
public function sanitize($data, $type, $base = '')
{
try {
return $this->sanitize->sanitize($data, $type, $base);
} catch (\SimplePie\Exception $e) {
if (!$this->enable_exceptions) {
$this->error = $e->getMessage();
$this->registry->call(Misc::class, 'error', [$this->error, E_USER_WARNING, $e->getFile(), $e->getLine()]);
return '';
}
throw $e;
}
}
/**
* Get the title of the feed
*
* Uses `<atom:title>`, `<title>` or `<dc:title>`
*
* @since 1.0 (previously called `get_feed_title` since 0.8)
* @return string|null
*/
public function get_title()
{
if ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'title')) {
return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'title')) {
return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_10, 'title')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_090, 'title')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'title')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_11, 'title')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_10, 'title')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
}
return null;
}
/**
* Get a category for the feed
*
* @since Unknown
* @param int $key The category that you want to return. Remember that arrays begin with 0, not 1
* @return \SimplePie\Category|null
*/
public function get_category($key = 0)
{
$categories = $this->get_categories();
if (isset($categories[$key])) {
return $categories[$key];
}
return null;
}
/**
* Get all categories for the feed
*
* Uses `<atom:category>`, `<category>` or `<dc:subject>`
*
* @since Unknown
* @return array|null List of {@see \SimplePie\Category} objects
*/
public function get_categories()
{
$categories = [];
foreach ((array) $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'category') as $category) {
$term = null;
$scheme = null;
$label = null;
if (isset($category['attribs']['']['term'])) {
$term = $this->sanitize($category['attribs']['']['term'], self::CONSTRUCT_TEXT);
}
if (isset($category['attribs']['']['scheme'])) {
$scheme = $this->sanitize($category['attribs']['']['scheme'], self::CONSTRUCT_TEXT);
}
if (isset($category['attribs']['']['label'])) {
$label = $this->sanitize($category['attribs']['']['label'], self::CONSTRUCT_TEXT);
}
$categories[] = $this->registry->create(Category::class, [$term, $scheme, $label]);
}
foreach ((array) $this->get_channel_tags(self::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'], self::CONSTRUCT_TEXT);
if (isset($category['attribs']['']['domain'])) {
$scheme = $this->sanitize($category['attribs']['']['domain'], self::CONSTRUCT_TEXT);
} else {
$scheme = null;
}
$categories[] = $this->registry->create(Category::class, [$term, $scheme, null]);
}
foreach ((array) $this->get_channel_tags(self::NAMESPACE_DC_11, 'subject') as $category) {
$categories[] = $this->registry->create(Category::class, [$this->sanitize($category['data'], self::CONSTRUCT_TEXT), null, null]);
}
foreach ((array) $this->get_channel_tags(self::NAMESPACE_DC_10, 'subject') as $category) {
$categories[] = $this->registry->create(Category::class, [$this->sanitize($category['data'], self::CONSTRUCT_TEXT), null, null]);
}
if (!empty($categories)) {
return array_unique($categories);
}
return null;
}
/**
* Get an author for the feed
*
* @since 1.1
* @param int $key The author that you want to return. Remember that arrays begin with 0, not 1
* @return \SimplePie\Author|null
*/
public function get_author($key = 0)
{
$authors = $this->get_authors();
if (isset($authors[$key])) {
return $authors[$key];
}
return null;
}
/**
* Get all authors for the feed
*
* Uses `<atom:author>`, `<author>`, `<dc:creator>` or `<itunes:author>`
*
* @since 1.1
* @return array|null List of {@see \SimplePie\Author} objects
*/
public function get_authors()
{
$authors = [];
foreach ((array) $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'author') as $author) {
$name = null;
$uri = null;
$email = null;
if (isset($author['child'][self::NAMESPACE_ATOM_10]['name'][0]['data'])) {
$name = $this->sanitize($author['child'][self::NAMESPACE_ATOM_10]['name'][0]['data'], self::CONSTRUCT_TEXT);
}
if (isset($author['child'][self::NAMESPACE_ATOM_10]['uri'][0]['data'])) {
$uri = $this->sanitize($author['child'][self::NAMESPACE_ATOM_10]['uri'][0]['data'], self::CONSTRUCT_IRI, $this->get_base($author['child'][self::NAMESPACE_ATOM_10]['uri'][0]));
}
if (isset($author['child'][self::NAMESPACE_ATOM_10]['email'][0]['data'])) {
$email = $this->sanitize($author['child'][self::NAMESPACE_ATOM_10]['email'][0]['data'], self::CONSTRUCT_TEXT);
}
if ($name !== null || $email !== null || $uri !== null) {
$authors[] = $this->registry->create(Author::class, [$name, $uri, $email]);
}
}
if ($author = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'author')) {
$name = null;
$url = null;
$email = null;
if (isset($author[0]['child'][self::NAMESPACE_ATOM_03]['name'][0]['data'])) {
$name = $this->sanitize($author[0]['child'][self::NAMESPACE_ATOM_03]['name'][0]['data'], self::CONSTRUCT_TEXT);
}
if (isset($author[0]['child'][self::NAMESPACE_ATOM_03]['url'][0]['data'])) {
$url = $this->sanitize($author[0]['child'][self::NAMESPACE_ATOM_03]['url'][0]['data'], self::CONSTRUCT_IRI, $this->get_base($author[0]['child'][self::NAMESPACE_ATOM_03]['url'][0]));
}
if (isset($author[0]['child'][self::NAMESPACE_ATOM_03]['email'][0]['data'])) {
$email = $this->sanitize($author[0]['child'][self::NAMESPACE_ATOM_03]['email'][0]['data'], self::CONSTRUCT_TEXT);
}
if ($name !== null || $email !== null || $url !== null) {
$authors[] = $this->registry->create(Author::class, [$name, $url, $email]);
}
}
foreach ((array) $this->get_channel_tags(self::NAMESPACE_DC_11, 'creator') as $author) {
$authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], self::CONSTRUCT_TEXT), null, null]);
}
foreach ((array) $this->get_channel_tags(self::NAMESPACE_DC_10, 'creator') as $author) {
$authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], self::CONSTRUCT_TEXT), null, null]);
}
foreach ((array) $this->get_channel_tags(self::NAMESPACE_ITUNES, 'author') as $author) {
$authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], self::CONSTRUCT_TEXT), null, null]);
}
if (!empty($authors)) {
return array_unique($authors);
}
return null;
}
/**
* Get a contributor for the feed
*
* @since 1.1
* @param int $key The contrbutor that you want to return. Remember that arrays begin with 0, not 1
* @return \SimplePie\Author|null
*/
public function get_contributor($key = 0)
{
$contributors = $this->get_contributors();
if (isset($contributors[$key])) {
return $contributors[$key];
}
return null;
}
/**
* Get all contributors for the feed
*
* Uses `<atom:contributor>`
*
* @since 1.1
* @return array|null List of {@see \SimplePie\Author} objects
*/
public function get_contributors()
{
$contributors = [];
foreach ((array) $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'contributor') as $contributor) {
$name = null;
$uri = null;
$email = null;
if (isset($contributor['child'][self::NAMESPACE_ATOM_10]['name'][0]['data'])) {
$name = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_10]['name'][0]['data'], self::CONSTRUCT_TEXT);
}
if (isset($contributor['child'][self::NAMESPACE_ATOM_10]['uri'][0]['data'])) {
$uri = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_10]['uri'][0]['data'], self::CONSTRUCT_IRI, $this->get_base($contributor['child'][self::NAMESPACE_ATOM_10]['uri'][0]));
}
if (isset($contributor['child'][self::NAMESPACE_ATOM_10]['email'][0]['data'])) {
$email = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_10]['email'][0]['data'], self::CONSTRUCT_TEXT);
}
if ($name !== null || $email !== null || $uri !== null) {
$contributors[] = $this->registry->create(Author::class, [$name, $uri, $email]);
}
}
foreach ((array) $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'contributor') as $contributor) {
$name = null;
$url = null;
$email = null;
if (isset($contributor['child'][self::NAMESPACE_ATOM_03]['name'][0]['data'])) {
$name = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_03]['name'][0]['data'], self::CONSTRUCT_TEXT);
}
if (isset($contributor['child'][self::NAMESPACE_ATOM_03]['url'][0]['data'])) {
$url = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_03]['url'][0]['data'], self::CONSTRUCT_IRI, $this->get_base($contributor['child'][self::NAMESPACE_ATOM_03]['url'][0]));
}
if (isset($contributor['child'][self::NAMESPACE_ATOM_03]['email'][0]['data'])) {
$email = $this->sanitize($contributor['child'][self::NAMESPACE_ATOM_03]['email'][0]['data'], self::CONSTRUCT_TEXT);
}
if ($name !== null || $email !== null || $url !== null) {
$contributors[] = $this->registry->create(Author::class, [$name, $url, $email]);
}
}
if (!empty($contributors)) {
return array_unique($contributors);
}
return null;
}
/**
* Get a single link for the feed
*
* @since 1.0 (previously called `get_feed_link` since Preview Release, `get_feed_permalink()` since 0.8)
* @param int $key The link that you want to return. Remember that arrays begin with 0, not 1
* @param string $rel The relationship of the link to return
* @return string|null Link URL
*/
public function get_link($key = 0, $rel = 'alternate')
{
$links = $this->get_links($rel);
if (isset($links[$key])) {
return $links[$key];
}
return null;
}
/**
* Get the permalink for the item
*
* Returns the first link available with a relationship of "alternate".
* Identical to {@see get_link()} with key 0
*
* @see get_link
* @since 1.0 (previously called `get_feed_link` since Preview Release, `get_feed_permalink()` since 0.8)
* @internal Added for parity between the parent-level and the item/entry-level.
* @return string|null Link URL
*/
public function get_permalink()
{
return $this->get_link(0);
}
/**
* Get all links for the feed
*
* Uses `<atom:link>` or `<link>`
*
* @since Beta 2
* @param string $rel The relationship of links to return
* @return array|null Links found for the feed (strings)
*/
public function get_links($rel = 'alternate')
{
if (!isset($this->data['links'])) {
$this->data['links'] = [];
if ($links = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'link')) {
foreach ($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'], self::CONSTRUCT_IRI, $this->get_base($link));
}
}
}
if ($links = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'link')) {
foreach ($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'], self::CONSTRUCT_IRI, $this->get_base($link));
}
}
}
if ($links = $this->get_channel_tags(self::NAMESPACE_RSS_10, 'link')) {
$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], self::CONSTRUCT_IRI, $this->get_base($links[0]));
}
if ($links = $this->get_channel_tags(self::NAMESPACE_RSS_090, 'link')) {
$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], self::CONSTRUCT_IRI, $this->get_base($links[0]));
}
if ($links = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'link')) {
$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], self::CONSTRUCT_IRI, $this->get_base($links[0]));
}
$keys = array_keys($this->data['links']);
foreach ($keys as $key) {
if ($this->registry->call(Misc::class, 'is_isegment_nz_nc', [$key])) {
if (isset($this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key])) {
$this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key] = array_merge($this->data['links'][$key], $this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key]);
$this->data['links'][$key] = &$this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key];
} else {
$this->data['links'][self::IANA_LINK_RELATIONS_REGISTRY . $key] = &$this->data['links'][$key];
}
} elseif (substr($key, 0, 41) === self::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['headers']['link'])) {
$link_headers = $this->data['headers']['link'];
if (is_array($link_headers)) {
$link_headers = implode(',', $link_headers);
}
// https://datatracker.ietf.org/doc/html/rfc8288
if (is_string($link_headers) &&
preg_match_all('/<(?P<uri>[^>]+)>\s*;\s*rel\s*=\s*(?P<quote>"?)' . preg_quote($rel) . '(?P=quote)\s*(?=,|$)/i', $link_headers, $matches)) {
return $matches['uri'];
}
}
if (isset($this->data['links'][$rel])) {
return $this->data['links'][$rel];
}
return null;
}
public function get_all_discovered_feeds()
{
return $this->all_discovered_feeds;
}
/**
* Get the content for the item
*
* Uses `<atom:subtitle>`, `<atom:tagline>`, `<description>`,
* `<dc:description>`, `<itunes:summary>` or `<itunes:subtitle>`
*
* @since 1.0 (previously called `get_feed_description()` since 0.8)
* @return string|null
*/
public function get_description()
{
if ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'subtitle')) {
return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'tagline')) {
return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_10, 'description')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_090, 'description')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'description')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_HTML, $this->get_base($return[0]));
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_11, 'description')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_10, 'description')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_ITUNES, 'summary')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_HTML, $this->get_base($return[0]));
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_ITUNES, 'subtitle')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_HTML, $this->get_base($return[0]));
}
return null;
}
/**
* Get the copyright info for the feed
*
* Uses `<atom:rights>`, `<atom:copyright>` or `<dc:rights>`
*
* @since 1.0 (previously called `get_feed_copyright()` since 0.8)
* @return string|null
*/
public function get_copyright()
{
if ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'rights')) {
return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_10_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_03, 'copyright')) {
return $this->sanitize($return[0]['data'], $this->registry->call(Misc::class, 'atom_03_construct_type', [$return[0]['attribs']]), $this->get_base($return[0]));
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'copyright')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_11, 'rights')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_10, 'rights')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
}
return null;
}
/**
* Get the language for the feed
*
* Uses `<language>`, `<dc:language>`, or @xml_lang
*
* @since 1.0 (previously called `get_feed_language()` since 0.8)
* @return string|null
*/
public function get_language()
{
if ($return = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'language')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_11, 'language')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_DC_10, 'language')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
} elseif (isset($this->data['child'][self::NAMESPACE_ATOM_10]['feed'][0]['xml_lang'])) {
return $this->sanitize($this->data['child'][self::NAMESPACE_ATOM_10]['feed'][0]['xml_lang'], self::CONSTRUCT_TEXT);
} elseif (isset($this->data['child'][self::NAMESPACE_ATOM_03]['feed'][0]['xml_lang'])) {
return $this->sanitize($this->data['child'][self::NAMESPACE_ATOM_03]['feed'][0]['xml_lang'], self::CONSTRUCT_TEXT);
} elseif (isset($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['xml_lang'])) {
return $this->sanitize($this->data['child'][self::NAMESPACE_RDF]['RDF'][0]['xml_lang'], self::CONSTRUCT_TEXT);
} elseif (isset($this->data['headers']['content-language'])) {
return $this->sanitize($this->data['headers']['content-language'], self::CONSTRUCT_TEXT);
}
return null;
}
/**
* Get the latitude coordinates for the item
*
* Compatible with the W3C WGS84 Basic Geo and GeoRSS specifications
*
* Uses `<geo:lat>` or `<georss:point>`
*
* @since 1.0
* @link http://www.w3.org/2003/01/geo/ W3C WGS84 Basic Geo
* @link http://www.georss.org/ GeoRSS
* @return string|null
*/
public function get_latitude()
{
if ($return = $this->get_channel_tags(self::NAMESPACE_W3C_BASIC_GEO, 'lat')) {
return (float) $return[0]['data'];
} elseif (($return = $this->get_channel_tags(self::NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', trim($return[0]['data']), $match)) {
return (float) $match[1];
}
return null;
}
/**
* Get the longitude coordinates for the feed
*
* Compatible with the W3C WGS84 Basic Geo and GeoRSS specifications
*
* Uses `<geo:long>`, `<geo:lon>` or `<georss:point>`
*
* @since 1.0
* @link http://www.w3.org/2003/01/geo/ W3C WGS84 Basic Geo
* @link http://www.georss.org/ GeoRSS
* @return string|null
*/
public function get_longitude()
{
if ($return = $this->get_channel_tags(self::NAMESPACE_W3C_BASIC_GEO, 'long')) {
return (float) $return[0]['data'];
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_W3C_BASIC_GEO, 'lon')) {
return (float) $return[0]['data'];
} elseif (($return = $this->get_channel_tags(self::NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', trim($return[0]['data']), $match)) {
return (float) $match[2];
}
return null;
}
/**
* Get the feed logo's title
*
* RSS 0.9.0, 1.0 and 2.0 feeds are allowed to have a "feed logo" title.
*
* Uses `<image><title>` or `<image><dc:title>`
*
* @return string|null
*/
public function get_image_title()
{
if ($return = $this->get_image_tags(self::NAMESPACE_RSS_10, 'title')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
} elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_090, 'title')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
} elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'title')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
} elseif ($return = $this->get_image_tags(self::NAMESPACE_DC_11, 'title')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
} elseif ($return = $this->get_image_tags(self::NAMESPACE_DC_10, 'title')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_TEXT);
}
return null;
}
/**
* Get the feed logo's URL
*
* RSS 0.9.0, 2.0, Atom 1.0, and feeds with iTunes RSS tags are allowed to
* have a "feed logo" URL. This points directly to the image itself.
*
* Uses `<itunes:image>`, `<atom:logo>`, `<atom:icon>`,
* `<image><title>` or `<image><dc:title>`
*
* @return string|null
*/
public function get_image_url()
{
if ($return = $this->get_channel_tags(self::NAMESPACE_ITUNES, 'image')) {
return $this->sanitize($return[0]['attribs']['']['href'], self::CONSTRUCT_IRI);
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'logo')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
} elseif ($return = $this->get_channel_tags(self::NAMESPACE_ATOM_10, 'icon')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
} elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_10, 'url')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
} elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_090, 'url')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
} elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'url')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
}
return null;
}
/**
* Get the feed logo's link
*
* RSS 0.9.0, 1.0 and 2.0 feeds are allowed to have a "feed logo" link. This
* points to a human-readable page that the image should link to.
*
* Uses `<itunes:image>`, `<atom:logo>`, `<atom:icon>`,
* `<image><title>` or `<image><dc:title>`
*
* @return string|null
*/
public function get_image_link()
{
if ($return = $this->get_image_tags(self::NAMESPACE_RSS_10, 'link')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
} elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_090, 'link')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
} elseif ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'link')) {
return $this->sanitize($return[0]['data'], self::CONSTRUCT_IRI, $this->get_base($return[0]));
}
return null;
}
/**
* Get the feed logo's link
*
* RSS 2.0 feeds are allowed to have a "feed logo" width.
*
* Uses `<image><width>` or defaults to 88 if no width is specified and
* the feed is an RSS 2.0 feed.
*
* @return int|null
*/
public function get_image_width()
{
if ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'width')) {
return intval($return[0]['data']);
} elseif ($this->get_type() & self::TYPE_RSS_SYNDICATION && $this->get_image_tags(self::NAMESPACE_RSS_20, 'url')) {
return 88;
}
return null;
}
/**
* Get the feed logo's height
*
* RSS 2.0 feeds are allowed to have a "feed logo" height.
*
* Uses `<image><height>` or defaults to 31 if no height is specified and
* the feed is an RSS 2.0 feed.
*
* @return int|null
*/
public function get_image_height()
{
if ($return = $this->get_image_tags(self::NAMESPACE_RSS_20, 'height')) {
return intval($return[0]['data']);
} elseif ($this->get_type() & self::TYPE_RSS_SYNDICATION && $this->get_image_tags(self::NAMESPACE_RSS_20, 'url')) {
return 31;
}
return null;
}
/**
* Get the number of items in the feed
*
* This is well-suited for {@link http://php.net/for for()} loops with
* {@see get_item()}
*
* @param int $max Maximum value to return. 0 for no limit
* @return int Number of items in the feed
*/
public function get_item_quantity($max = 0)
{
$max = (int) $max;
$qty = count($this->get_items());
if ($max === 0) {
return $qty;
}
return ($qty > $max) ? $max : $qty;
}
/**
* Get a single item from the feed
*
* This is better suited for {@link http://php.net/for for()} loops, whereas
* {@see get_items()} is better suited for
* {@link http://php.net/foreach foreach()} loops.
*
* @see get_item_quantity()
* @since Beta 2
* @param int $key The item that you want to return. Remember that arrays begin with 0, not 1
* @return \SimplePie\Item|null
*/
public function get_item($key = 0)
{
$items = $this->get_items();
if (isset($items[$key])) {
return $items[$key];
}
return null;
}
/**
* Get all items from the feed
*
* This is better suited for {@link http://php.net/for for()} loops, whereas
* {@see get_items()} is better suited for
* {@link http://php.net/foreach foreach()} loops.
*
* @see get_item_quantity
* @since Beta 2
* @param int $start Index to start at
* @param int $end Number of items to return. 0 for all items after `$start`
* @return \SimplePie\Item[]|null List of {@see \SimplePie\Item} objects
*/
public function get_items($start = 0, $end = 0)
{
if (!isset($this->data['items'])) {
if (!empty($this->multifeed_objects)) {
$this->data['items'] = SimplePie::merge_items($this->multifeed_objects, $start, $end, $this->item_limit);
if (empty($this->data['items'])) {
return [];
}
return $this->data['items'];
}
$this->data['items'] = [];
if ($items = $this->get_feed_tags(self::NAMESPACE_ATOM_10, 'entry')) {
$keys = array_keys($items);
foreach ($keys as $key) {
$this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]);
}
}
if ($items = $this->get_feed_tags(self::NAMESPACE_ATOM_03, 'entry')) {
$keys = array_keys($items);
foreach ($keys as $key) {
$this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]);
}
}
if ($items = $this->get_feed_tags(self::NAMESPACE_RSS_10, 'item')) {
$keys = array_keys($items);
foreach ($keys as $key) {
$this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]);
}
}
if ($items = $this->get_feed_tags(self::NAMESPACE_RSS_090, 'item')) {
$keys = array_keys($items);
foreach ($keys as $key) {
$this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]);
}
}
if ($items = $this->get_channel_tags(self::NAMESPACE_RSS_20, 'item')) {
$keys = array_keys($items);
foreach ($keys as $key) {
$this->data['items'][] = $this->registry->create(Item::class, [$this, $items[$key]]);
}
}
}
if (empty($this->data['items'])) {
return [];
}
if ($this->order_by_date) {
if (!isset($this->data['ordered_items'])) {
$this->data['ordered_items'] = $this->data['items'];
usort($this->data['ordered_items'], [get_class($this), 'sort_items']);
}
$items = $this->data['ordered_items'];
} else {
$items = $this->data['items'];
}
// Slice the data as desired
if ($end === 0) {
return array_slice($items, $start);
}
return array_slice($items, $start, $end);
}
/**
* Set the favicon handler
*
* @deprecated Use your own favicon handling instead
*/
public function set_favicon_handler($page = false, $qs = 'i')
{
trigger_error('Favicon handling has been removed, please use your own handling', \E_USER_DEPRECATED);
return false;
}
/**
* Get the favicon for the current feed
*
* @deprecated Use your own favicon handling instead
*/
public function get_favicon()
{
trigger_error('Favicon handling has been removed, please use your own handling', \E_USER_DEPRECATED);
if (($url = $this->get_link()) !== null) {
return 'https://www.google.com/s2/favicons?domain=' . urlencode($url);
}
return false;
}
/**
* Magic method handler
*
* @param string $method Method name
* @param array $args Arguments to the method
* @return mixed
*/
public function __call($method, $args)
{
if (strpos($method, 'subscribe_') === 0) {
trigger_error('subscribe_*() has been deprecated, implement the callback yourself', \E_USER_DEPRECATED);
return '';
}
if ($method === 'enable_xml_dump') {
trigger_error('enable_xml_dump() has been deprecated, use get_raw_data() instead', \E_USER_DEPRECATED);
return false;
}
$class = get_class($this);
$trace = debug_backtrace(); // phpcs:ignore PHPCompatibility.FunctionUse.ArgumentFunctionsReportCurrentValue.NeedsInspection
$file = $trace[0]['file'];
$line = $trace[0]['line'];
throw new SimplePieException("Call to undefined method $class::$method() in $file on line $line");
}
/**
* Sorting callback for items
*
* @access private
* @param SimplePie $a
* @param SimplePie $b
* @return boolean
*/
public static function sort_items($a, $b)
{
$a_date = $a->get_date('U');
$b_date = $b->get_date('U');
if ($a_date && $b_date) {
return $a_date > $b_date ? -1 : 1;
}
// Sort items without dates to the top.
if ($a_date) {
return 1;
}
if ($b_date) {
return -1;
}
return 0;
}
/**
* Merge items from several feeds into one
*
* If you're merging multiple feeds together, they need to all have dates
* for the items or else SimplePie will refuse to sort them.
*
* @link http://simplepie.org/wiki/tutorial/sort_multiple_feeds_by_time_and_date#if_feeds_require_separate_per-feed_settings
* @param array $urls List of SimplePie feed objects to merge
* @param int $start Starting item
* @param int $end Number of items to return
* @param int $limit Maximum number of items per feed
* @return array
*/
public static function merge_items($urls, $start = 0, $end = 0, $limit = 0)
{
if (is_array($urls) && sizeof($urls) > 0) {
$items = [];
foreach ($urls as $arg) {
if ($arg instanceof SimplePie) {
$items = array_merge($items, $arg->get_items(0, $limit));
} else {
trigger_error('Arguments must be SimplePie objects', E_USER_WARNING);
}
}
usort($items, [get_class($urls[0]), 'sort_items']);
if ($end === 0) {
return array_slice($items, $start);
}
return array_slice($items, $start, $end);
}
trigger_error('Cannot merge zero SimplePie objects', E_USER_WARNING);
return [];
}
/**
* Store PubSubHubbub links as headers
*
* There is no way to find PuSH links in the body of a microformats feed,
* so they are added to the headers when found, to be used later by get_links.
* @param \SimplePie\File $file
* @param string $hub
* @param string $self
*/
private function store_links(&$file, $hub, $self)
{
if (isset($file->headers['link']['hub']) ||
(isset($file->headers['link']) &&
preg_match('/rel=hub/', $file->headers['link']))) {
return;
}
if ($hub) {
if (isset($file->headers['link'])) {
if ($file->headers['link'] !== '') {
$file->headers['link'] = ', ';
}
} else {
$file->headers['link'] = '';
}
$file->headers['link'] .= '<'.$hub.'>; rel=hub';
if ($self) {
$file->headers['link'] .= ', <'.$self.'>; rel=self';
}
}
}
/**
* Get a DataCache
*
* @param string $feed_url Only needed for BC, can be removed in SimplePie 2.0.0
*
* @return DataCache
*/
private function get_cache($feed_url = '')
{
if ($this->cache === null) {
// @trigger_error(sprintf('Not providing as PSR-16 cache implementation is deprecated since SimplePie 1.8.0, please use "SimplePie\SimplePie::set_cache()".'), \E_USER_DEPRECATED);
$cache = $this->registry->call(Cache::class, 'get_handler', [
$this->cache_location,
$this->get_cache_filename($feed_url),
Base::TYPE_FEED
]);
return new BaseDataCache($cache);
}
return $this->cache;
}
}
class_alias('SimplePie\SimplePie', 'SimplePie');