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freshrss_ynh/sources/lib/SimplePie/SimplePie.php

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2014-07-23 15:52:50 +02:00
<?php
/**
* SimplePie
*
* A PHP-Based RSS and Atom Feed Framework.
* Takes the hard work out of managing a complete RSS/Atom solution.
*
* Copyright (c) 2004-2012, Ryan Parman, Geoffrey Sneddon, Ryan McCue, and contributors
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* * Neither the name of the SimplePie Team nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
* AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* @package SimplePie
* @version 1.4-dev-FreshRSS
* @copyright 2004-2012 Ryan Parman, Geoffrey Sneddon, Ryan McCue
* @author Ryan Parman
* @author Geoffrey Sneddon
* @author Ryan McCue
* @link http://simplepie.org/ SimplePie
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
*/
/**
* SimplePie Name
*/
define('SIMPLEPIE_NAME', 'SimplePie');
/**
* SimplePie Version
*/
define('SIMPLEPIE_VERSION', '1.4-dev-FreshRSS');
/**
* SimplePie Build
* @todo Hardcode for release (there's no need to have to call SimplePie_Misc::get_build() only every load of simplepie.inc)
*/
define('SIMPLEPIE_BUILD', gmdate('YmdHis', SimplePie_Misc::get_build()));
/**
* SimplePie Website URL
*/
define('SIMPLEPIE_URL', 'http://simplepie.org');
/**
* SimplePie Useragent
* @see SimplePie::set_useragent()
*/
define('SIMPLEPIE_USERAGENT', SIMPLEPIE_NAME . '/' . SIMPLEPIE_VERSION . ' (Feed Parser; ' . SIMPLEPIE_URL . '; Allow like Gecko) Build/' . SIMPLEPIE_BUILD);
/**
* SimplePie Linkback
*/
define('SIMPLEPIE_LINKBACK', '<a href="' . SIMPLEPIE_URL . '" title="' . SIMPLEPIE_NAME . ' ' . SIMPLEPIE_VERSION . '">' . SIMPLEPIE_NAME . '</a>');
/**
* No Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
define('SIMPLEPIE_LOCATOR_NONE', 0);
/**
* Feed Link Element Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
define('SIMPLEPIE_LOCATOR_AUTODISCOVERY', 1);
/**
* Local Feed Extension Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
define('SIMPLEPIE_LOCATOR_LOCAL_EXTENSION', 2);
/**
* Local Feed Body Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
define('SIMPLEPIE_LOCATOR_LOCAL_BODY', 4);
/**
* Remote Feed Extension Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
define('SIMPLEPIE_LOCATOR_REMOTE_EXTENSION', 8);
/**
* Remote Feed Body Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
define('SIMPLEPIE_LOCATOR_REMOTE_BODY', 16);
/**
* All Feed Autodiscovery
* @see SimplePie::set_autodiscovery_level()
*/
define('SIMPLEPIE_LOCATOR_ALL', 31);
/**
* No known feed type
*/
define('SIMPLEPIE_TYPE_NONE', 0);
/**
* RSS 0.90
*/
define('SIMPLEPIE_TYPE_RSS_090', 1);
/**
* RSS 0.91 (Netscape)
*/
define('SIMPLEPIE_TYPE_RSS_091_NETSCAPE', 2);
/**
* RSS 0.91 (Userland)
*/
define('SIMPLEPIE_TYPE_RSS_091_USERLAND', 4);
/**
* RSS 0.91 (both Netscape and Userland)
*/
define('SIMPLEPIE_TYPE_RSS_091', 6);
/**
* RSS 0.92
*/
define('SIMPLEPIE_TYPE_RSS_092', 8);
/**
* RSS 0.93
*/
define('SIMPLEPIE_TYPE_RSS_093', 16);
/**
* RSS 0.94
*/
define('SIMPLEPIE_TYPE_RSS_094', 32);
/**
* RSS 1.0
*/
define('SIMPLEPIE_TYPE_RSS_10', 64);
/**
* RSS 2.0
*/
define('SIMPLEPIE_TYPE_RSS_20', 128);
/**
* RDF-based RSS
*/
define('SIMPLEPIE_TYPE_RSS_RDF', 65);
/**
* Non-RDF-based RSS (truly intended as syndication format)
*/
define('SIMPLEPIE_TYPE_RSS_SYNDICATION', 190);
/**
* All RSS
*/
define('SIMPLEPIE_TYPE_RSS_ALL', 255);
/**
* Atom 0.3
*/
define('SIMPLEPIE_TYPE_ATOM_03', 256);
/**
* Atom 1.0
*/
define('SIMPLEPIE_TYPE_ATOM_10', 512);
/**
* All Atom
*/
define('SIMPLEPIE_TYPE_ATOM_ALL', 768);
/**
* All feed types
*/
define('SIMPLEPIE_TYPE_ALL', 1023);
/**
* No construct
*/
define('SIMPLEPIE_CONSTRUCT_NONE', 0);
/**
* Text construct
*/
define('SIMPLEPIE_CONSTRUCT_TEXT', 1);
/**
* HTML construct
*/
define('SIMPLEPIE_CONSTRUCT_HTML', 2);
/**
* XHTML construct
*/
define('SIMPLEPIE_CONSTRUCT_XHTML', 4);
/**
* base64-encoded construct
*/
define('SIMPLEPIE_CONSTRUCT_BASE64', 8);
/**
* IRI construct
*/
define('SIMPLEPIE_CONSTRUCT_IRI', 16);
/**
* A construct that might be HTML
*/
define('SIMPLEPIE_CONSTRUCT_MAYBE_HTML', 32);
/**
* All constructs
*/
define('SIMPLEPIE_CONSTRUCT_ALL', 63);
/**
* Don't change case
*/
define('SIMPLEPIE_SAME_CASE', 1);
/**
* Change to lowercase
*/
define('SIMPLEPIE_LOWERCASE', 2);
/**
* Change to uppercase
*/
define('SIMPLEPIE_UPPERCASE', 4);
/**
* PCRE for HTML attributes
*/
define('SIMPLEPIE_PCRE_HTML_ATTRIBUTE', '((?:[\x09\x0A\x0B\x0C\x0D\x20]+[^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x2F\x3D\x3E]*(?:[\x09\x0A\x0B\x0C\x0D\x20]*=[\x09\x0A\x0B\x0C\x0D\x20]*(?:"(?:[^"]*)"|\'(?:[^\']*)\'|(?:[^\x09\x0A\x0B\x0C\x0D\x20\x22\x27\x3E][^\x09\x0A\x0B\x0C\x0D\x20\x3E]*)?))?)*)[\x09\x0A\x0B\x0C\x0D\x20]*');
/**
* PCRE for XML attributes
*/
define('SIMPLEPIE_PCRE_XML_ATTRIBUTE', '((?:\s+(?:(?:[^\s:]+:)?[^\s:]+)\s*=\s*(?:"(?:[^"]*)"|\'(?:[^\']*)\'))*)\s*');
/**
* XML Namespace
*/
define('SIMPLEPIE_NAMESPACE_XML', 'http://www.w3.org/XML/1998/namespace');
/**
* Atom 1.0 Namespace
*/
define('SIMPLEPIE_NAMESPACE_ATOM_10', 'http://www.w3.org/2005/Atom');
/**
* Atom 0.3 Namespace
*/
define('SIMPLEPIE_NAMESPACE_ATOM_03', 'http://purl.org/atom/ns#');
/**
* RDF Namespace
*/
define('SIMPLEPIE_NAMESPACE_RDF', 'http://www.w3.org/1999/02/22-rdf-syntax-ns#');
/**
* RSS 0.90 Namespace
*/
define('SIMPLEPIE_NAMESPACE_RSS_090', 'http://my.netscape.com/rdf/simple/0.9/');
/**
* RSS 1.0 Namespace
*/
define('SIMPLEPIE_NAMESPACE_RSS_10', 'http://purl.org/rss/1.0/');
/**
* RSS 1.0 Content Module Namespace
*/
define('SIMPLEPIE_NAMESPACE_RSS_10_MODULES_CONTENT', 'http://purl.org/rss/1.0/modules/content/');
/**
* RSS 2.0 Namespace
* (Stupid, I know, but I'm certain it will confuse people less with support.)
*/
define('SIMPLEPIE_NAMESPACE_RSS_20', '');
/**
* DC 1.0 Namespace
*/
define('SIMPLEPIE_NAMESPACE_DC_10', 'http://purl.org/dc/elements/1.0/');
/**
* DC 1.1 Namespace
*/
define('SIMPLEPIE_NAMESPACE_DC_11', 'http://purl.org/dc/elements/1.1/');
/**
* W3C Basic Geo (WGS84 lat/long) Vocabulary Namespace
*/
define('SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO', 'http://www.w3.org/2003/01/geo/wgs84_pos#');
/**
* GeoRSS Namespace
*/
define('SIMPLEPIE_NAMESPACE_GEORSS', 'http://www.georss.org/georss');
/**
* Media RSS Namespace
*/
define('SIMPLEPIE_NAMESPACE_MEDIARSS', 'http://search.yahoo.com/mrss/');
/**
* Wrong Media RSS Namespace. Caused by a long-standing typo in the spec.
*/
define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG', 'http://search.yahoo.com/mrss');
/**
* Wrong Media RSS Namespace #2. New namespace introduced in Media RSS 1.5.
*/
define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG2', 'http://video.search.yahoo.com/mrss');
/**
* Wrong Media RSS Namespace #3. A possible typo of the Media RSS 1.5 namespace.
*/
define('SIMPLEPIE_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.
*/
define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG4', 'http://www.rssboard.org/media-rss');
/**
* Wrong Media RSS Namespace #5. A possible typo of the RSS Advisory Board URL.
*/
define('SIMPLEPIE_NAMESPACE_MEDIARSS_WRONG5', 'http://www.rssboard.org/media-rss/');
/**
* iTunes RSS Namespace
*/
define('SIMPLEPIE_NAMESPACE_ITUNES', 'http://www.itunes.com/dtds/podcast-1.0.dtd');
/**
* XHTML Namespace
*/
define('SIMPLEPIE_NAMESPACE_XHTML', 'http://www.w3.org/1999/xhtml');
/**
* IANA Link Relations Registry
*/
define('SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY', 'http://www.iana.org/assignments/relation/');
/**
* No file source
*/
define('SIMPLEPIE_FILE_SOURCE_NONE', 0);
/**
* Remote file source
*/
define('SIMPLEPIE_FILE_SOURCE_REMOTE', 1);
/**
* Local file source
*/
define('SIMPLEPIE_FILE_SOURCE_LOCAL', 2);
/**
* fsockopen() file source
*/
define('SIMPLEPIE_FILE_SOURCE_FSOCKOPEN', 4);
/**
* cURL file source
*/
define('SIMPLEPIE_FILE_SOURCE_CURL', 8);
/**
* file_get_contents() file source
*/
define('SIMPLEPIE_FILE_SOURCE_FILE_GET_CONTENTS', 16);
/**
* SimplePie
*
* @package SimplePie
* @subpackage API
*/
class SimplePie
{
/**
* @var array Raw data
* @access private
*/
public $data = array();
/**
* @var mixed Error string
* @access private
*/
public $error;
/**
* @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 = SIMPLEPIE_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; //FreshRSS
/**
* @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 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
*/
public $cache = true;
/**
* @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 = SIMPLEPIE_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 = array();
/**
* @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 = array();
/**
* @var array Stores SimplePie objects when multiple feeds initialized.
* @access private
*/
public $multifeed_objects = array();
/**
* @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 array Stores the default attributes to be stripped by strip_attributes().
* @see SimplePie::strip_attributes()
* @access private
*/
public $strip_attributes = array('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 = array('audio' => array('preload' => 'none'), 'iframe' => array('sandbox' => 'allow-scripts allow-same-origin'), 'video' => array('preload' => 'none')); //FreshRSS
/**
* @var array Stores the default tags to be stripped by strip_htmltags().
* @see SimplePie::strip_htmltags()
* @access private
*/
public $strip_htmltags = array('base', 'blink', 'body', 'doctype', 'embed', 'font', 'form', 'frame', 'frameset', 'html', 'iframe', 'input', 'marquee', 'meta', 'noscript', 'object', 'param', 'script', 'style');
/**
* The SimplePie class contains feed level data and options
*
* 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, '5.2', '<'))
{
trigger_error('PHP 4.x, 5.0 and 5.1 are no longer supported. Please upgrade to PHP 5.2 or newer.');
die();
}
// 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)
{
$level = defined('E_USER_DEPRECATED') ? E_USER_DEPRECATED : E_USER_WARNING;
trigger_error('Passing parameters to the constructor is no longer supported. Please use set_feed_url(), set_cache_location(), and set_cache_duration() directly.', $level);
$args = func_get_args();
switch (count($args)) {
case 3:
$this->set_cache_duration($args[2]);
case 2:
$this->set_cache_location($args[1]);
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 ((version_compare(PHP_VERSION, '5.3', '<') || !gc_enabled()) && !ini_get('zend.ze1_compatibility_mode'))
{
if (!empty($this->data['items']))
{
foreach ($this->data['items'] as $item)
{
$item->__destruct();
}
unset($item, $this->data['items']);
}
if (!empty($this->data['ordered_items']))
{
foreach ($this->data['ordered_items'] as $item)
{
$item->__destruct();
}
unset($item, $this->data['ordered_items']);
}
}
}
/**
* Force the given data/URL to be treated as a feed
*
* 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)
{
$this->multifeed_url = array();
if (is_array($url))
{
foreach ($url as $value)
{
$this->multifeed_url[] = $this->registry->call('Misc', 'fix_protocol', array($value, 1));
}
}
else
{
$this->feed_url = $this->registry->call('Misc', 'fix_protocol', array($url, 1));
$this->permanent_url = $this->feed_url; //FreshRSS
}
}
/**
* Set an instance of {@see SimplePie_File} to use as a feed
*
* @param SimplePie_File &$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; //FreshRSS
$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 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;
}
/**
* 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->cache = (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
*
* @param string $location The file system location.
*/
public function set_cache_location($location = './cache')
{
$this->cache_location = (string) $location;
}
/**
* 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_LOCATOR_NONE
* @see SIMPLEPIE_LOCATOR_AUTODISCOVERY
* @see SIMPLEPIE_LOCATOR_LOCAL_EXTENSION
* @see SIMPLEPIE_LOCATOR_LOCAL_BODY
* @see SIMPLEPIE_LOCATOR_REMOTE_EXTENSION
* @see SIMPLEPIE_LOCATOR_REMOTE_BODY
* @see SIMPLEPIE_LOCATOR_ALL
* @param int $level Feed Autodiscovery Level (level can be a combination of the above constants, see bitwise OR operator)
*/
public function set_autodiscovery_level($level = SIMPLEPIE_LOCATOR_ALL)
{
$this->autodiscovery = (int) $level;
}
/**
* Get the class registry
*
* Use this to override SimplePie's default classes
* @see SimplePie_Registry
* @return SimplePie_Registry
*/
public function &get_registry()
{
return $this->registry;
}
/**#@+
* Useful when you are overloading or extending SimplePie's default classes.
*
* @deprecated Use {@see get_registry()} instead
* @link http://php.net/manual/en/language.oop5.basic.php#language.oop5.basic.extends PHP5 extends documentation
* @param string $class Name of custom class
* @return boolean True on success, false otherwise
*/
/**
* Set which class SimplePie uses for caching
*/
public function set_cache_class($class = 'SimplePie_Cache')
{
return $this->registry->register('Cache', $class, true);
}
/**
* Set which class SimplePie uses for auto-discovery
*/
public function set_locator_class($class = 'SimplePie_Locator')
{
return $this->registry->register('Locator', $class, true);
}
/**
* Set which class SimplePie uses for XML parsing
*/
public function set_parser_class($class = 'SimplePie_Parser')
{
return $this->registry->register('Parser', $class, true);
}
/**
* Set which class SimplePie uses for remote file fetching
*/
public function set_file_class($class = 'SimplePie_File')
{
return $this->registry->register('File', $class, true);
}
/**
* Set which class SimplePie uses for data sanitization
*/
public function set_sanitize_class($class = 'SimplePie_Sanitize')
{
return $this->registry->register('Sanitize', $class, true);
}
/**
* Set which class SimplePie uses for handling feed items
*/
public function set_item_class($class = 'SimplePie_Item')
{
return $this->registry->register('Item', $class, true);
}
/**
* Set which class SimplePie uses for handling author data
*/
public function set_author_class($class = 'SimplePie_Author')
{
return $this->registry->register('Author', $class, true);
}
/**
* Set which class SimplePie uses for handling category data
*/
public function set_category_class($class = 'SimplePie_Category')
{
return $this->registry->register('Category', $class, true);
}
/**
* Set which class SimplePie uses for feed enclosures
*/
public function set_enclosure_class($class = 'SimplePie_Enclosure')
{
return $this->registry->register('Enclosure', $class, true);
}
/**
* Set which class SimplePie uses for `<media:text>` captions
*/
public function set_caption_class($class = 'SimplePie_Caption')
{
return $this->registry->register('Caption', $class, true);
}
/**
* Set which class SimplePie uses for `<media:copyright>`
*/
public function set_copyright_class($class = 'SimplePie_Copyright')
{
return $this->registry->register('Copyright', $class, true);
}
/**
* Set which class SimplePie uses for `<media:credit>`
*/
public function set_credit_class($class = 'SimplePie_Credit')
{
return $this->registry->register('Credit', $class, true);
}
/**
* Set which class SimplePie uses for `<media:rating>`
*/
public function set_rating_class($class = 'SimplePie_Rating')
{
return $this->registry->register('Rating', $class, true);
}
/**
* Set which class SimplePie uses for `<media:restriction>`
*/
public function set_restriction_class($class = 'SimplePie_Restriction')
{
return $this->registry->register('Restriction', $class, true);
}
/**
* Set which class SimplePie uses for content-type sniffing
*/
public function set_content_type_sniffer_class($class = 'SimplePie_Content_Type_Sniffer')
{
return $this->registry->register('Content_Type_Sniffer', $class, true);
}
/**
* Set which class SimplePie uses item sources
*/
public function set_source_class($class = 'SimplePie_Source')
{
return $this->registry->register('Source', $class, true);
}
/**#@-*/
/**
* Set the user agent string
*
* @param string $ua New user agent string.
*/
public function set_useragent($ua = SIMPLEPIE_USERAGENT)
{
$this->useragent = (string) $ua;
}
/**
* Set callback function to create cache filename with
*
* @param mixed $function Callback function
*/
public function set_cache_name_function($function = 'md5')
{
if (is_callable($function))
{
$this->cache_name_function = $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);
}
}
/**
* 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 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 handler to enable the display of cached images.
*
* @param str $page Web-accessible path to the handler_image.php file.
* @param str $qs The query string that the value should be passed to.
*/
public function set_image_handler($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 = $enable;
}
function cleanMd5($rss) { //FreshRSS
return md5(preg_replace(array('#<(lastBuildDate|pubDate|updated|feedDate|dc:date|slash:comments)>[^<]+</\\1>#', '#<!--.+?-->#s'), '', $rss));
}
/**
* 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 positive integer with modification time if using cache, boolean true if otherwise successful, false otherwise
*/
public function init()
{
// Check absolute bare minimum requirements.
if (!extension_loaded('xml') || !extension_loaded('pcre'))
{
return false;
}
// Then check the xml extension is sane (i.e., libxml 2.7.x issue on PHP < 5.2.9 and libxml 2.7.0 to 2.7.2 on any version) if we don't have xmlreader.
elseif (!extension_loaded('xmlreader'))
{
static $xml_is_sane = null;
if ($xml_is_sane === null)
{
$parser_check = xml_parser_create();
xml_parse_into_struct($parser_check, '<foo>&amp;</foo>', $values);
xml_parser_free($parser_check);
$xml_is_sane = isset($values[0]['value']);
}
if (!$xml_is_sane)
{
return false;
}
}
if (method_exists($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->cache, $this->cache_location, $this->cache_name_function, $this->registry->get_class('Cache'));
$this->sanitize->pass_file_data($this->registry->get_class('File'), $this->timeout, $this->useragent, $this->force_fsockopen);
if (!empty($this->multifeed_url))
{
$i = 0;
$success = 0;
$this->multifeed_objects = array();
$this->error = array();
foreach ($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 = array();
$this->multifeed_objects = array();
$cache = false;
if ($this->feed_url !== null)
{
$parsed_feed_url = $this->registry->call('Misc', 'parse_url', array($this->feed_url));
// Decide whether to enable caching
if ($this->cache && $parsed_feed_url['scheme'] !== '')
{
$cache = $this->registry->call('Cache', 'get_handler', array($this->cache_location, call_user_func($this->cache_name_function, $this->feed_url), 'spc'));
}
// Fetch the data via SimplePie_File into $this->raw_data
if (($fetched = $this->fetch_data($cache)) === true)
{
return $this->data['mtime']; //FreshRSS
}
elseif ($fetched === false) {
return false;
}
list($headers, $sniffed) = $fetched;
if (isset($this->data['md5'])) { //FreshRSS
$md5 = $this->data['md5'];
}
}
// Set up array of possible encodings
$encodings = array();
// First check to see if input has been overridden.
if ($this->input_encoding !== false)
{
$encodings[] = strtoupper($this->input_encoding);
}
$application_types = array('application/xml', 'application/xml-dtd', 'application/xml-external-parsed-entity');
$text_types = array('text/xml', 'text/xml-external-parsed-entity');
// RFC 3023 (only applies to sniffed content)
if (isset($sniffed))
{
if (in_array($sniffed, $application_types) || substr($sniffed, 0, 12) === 'application/' && substr($sniffed, -4) === '+xml')
{
if (isset($headers['content-type']) && preg_match('/;\x20?charset=([^;]*)/i', $headers['content-type'], $charset))
{
$encodings[] = strtoupper($charset[1]);
}
else
{
$encodings[] = ''; //FreshRSS: Let the DOM parser decide first
}
}
elseif (in_array($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]);
}
else
{
$encodings[] = ''; //FreshRSS: Let the DOM parser decide first
}
$encodings[] = 'US-ASCII';
}
// Text MIME-type default
elseif (substr($sniffed, 0, 5) === 'text/')
{
$encodings[] = 'US-ASCII';
}
}
// Fallback to XML 1.0 Appendix F.1/UTF-8/ISO-8859-1
$encodings = array_merge($encodings, $this->registry->call('Misc', 'xml_encoding', array($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 = (empty($encoding) || $encoding === 'UTF-8') ? $this->raw_data : //FreshRSS
$this->registry->call('Misc', 'change_encoding', array($this->raw_data, $encoding, 'UTF-8')))
{
// Create new parser
$parser = $this->registry->create('Parser');
// If it's parsed fine
if ($parser->parse($utf8_data, empty($encoding) ? '' : 'UTF-8')) //FreshRSS
{
$this->data = $parser->get_data();
if (!($this->get_type() & ~SIMPLEPIE_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.";
$this->registry->call('Misc', 'error', array($this->error, E_USER_NOTICE, __FILE__, __LINE__));
return false;
}
if (isset($headers))
{
$this->data['headers'] = $headers;
}
$this->data['build'] = SIMPLEPIE_BUILD;
$this->data['mtime'] = time(); //FreshRSS
$this->data['md5'] = empty($md5) ? $this->cleanMd5($this->raw_data) : $md5; //FreshRSS
// Cache the file if caching is enabled
if ($cache && !$cache->save($this))
{
trigger_error("$this->cache_location is not writeable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
}
return true;
}
}
}
if (isset($parser))
{
// We have an error, just set SimplePie_Misc::error to it and quit
$this->error = sprintf('This XML document is invalid, likely due to invalid characters. XML error: %s at line %d, column %d', $parser->get_error_string(), $parser->get_current_line(), $parser->get_current_column());
}
else
{
$this->error = 'The data could not be converted to UTF-8. You MUST have either the iconv or mbstring extension installed. Upgrading to PHP 5.x (which includes iconv) is highly recommended.';
}
$this->registry->call('Misc', 'error', array($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 SimplePie_Cache|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 it's enabled, use the cache
if ($cache)
{
// Load the Cache
$this->data = $cache->load();
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if ($cache->mtime() + $this->cache_duration > time()) { //FreshRSS
$this->raw_data = false;
return true; // If the cache is still valid, just return true
}
elseif (!empty($this->data))
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{
// If the cache is for an outdated build of SimplePie
if (!isset($this->data['build']) || $this->data['build'] !== SIMPLEPIE_BUILD)
{
$cache->unlink();
$this->data = array();
}
// If we've hit a collision just rerun it with caching disabled
elseif (isset($this->data['url']) && $this->data['url'] !== $this->feed_url)
{
$cache = false;
$this->data = array();
}
// If we've got a non feed_url stored (if the page isn't actually a feed, or is a redirect) use that URL.
elseif (isset($this->data['feed_url']))
{
// If the autodiscovery cache is still valid use it.
if ($cache->mtime() + $this->autodiscovery_cache_duration > time())
{
// Do not need to do feed autodiscovery yet.
if ($this->data['feed_url'] !== $this->data['url'])
{
$this->set_feed_url($this->data['feed_url']);
return $this->init();
}
$cache->unlink();
$this->data = array();
}
}
// Check if the cache has been updated
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else //if ($cache->mtime() + $this->cache_duration < time()) //FreshRSS removed
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{
// If we have last-modified and/or etag set
//if (isset($this->data['headers']['last-modified']) || isset($this->data['headers']['etag'])) //FreshRSS removed
{
$headers = array(
'Accept' => 'application/atom+xml, application/rss+xml, application/rdf+xml;q=0.9, application/xml;q=0.8, text/xml;q=0.8, text/html;q=0.7, unknown/unknown;q=0.1, application/unknown;q=0.1, */*;q=0.1',
);
if (isset($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 = $this->registry->create('File', array($this->feed_url, $this->timeout, 5, $headers, $this->useragent, $this->force_fsockopen)); //FreshRSS
if ($file->success)
{
if ($file->status_code === 304)
{
$cache->touch();
return true;
}
}
else
{
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$cache->touch(); //FreshRSS
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$this->error = $file->error; //FreshRSS
return !empty($this->data); //FreshRSS
//unset($file); //FreshRSS removed
}
}
{ //FreshRSS
$md5 = $this->cleanMd5($file->body);
if ($this->data['md5'] === $md5) {
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// syslog(LOG_DEBUG, 'SimplePie MD5 cache match for ' . $this->feed_url);
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$cache->touch();
return true; //Content unchanged even though server did not send a 304
} else {
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// syslog(LOG_DEBUG, 'SimplePie MD5 cache no match for ' . $this->feed_url);
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$this->data['md5'] = $md5;
}
}
}
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//// If the cache is still valid, just return true
//else //FreshRSS removed
//{
// $this->raw_data = false;
// return true;
//}
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}
// If the cache is empty, delete it
else
{
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//$cache->unlink(); //FreshRSS removed
$cache->touch(); //FreshRSS
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$this->data = array();
}
}
// If we don't already have the file (it'll only exist if we've opened it to check if the cache has been modified), open it.
if (!isset($file))
{
if ($this->file instanceof SimplePie_File && $this->file->url === $this->feed_url)
{
$file =& $this->file;
}
else
{
$headers = array(
'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 = $this->registry->create('File', array($this->feed_url, $this->timeout, 5, $headers, $this->useragent, $this->force_fsockopen));
}
}
// If the file connection has an error, set SimplePie::error to that and quit
if (!$file->success && !($file->method & SIMPLEPIE_FILE_SOURCE_REMOTE === 0 || ($file->status_code === 200 || $file->status_code > 206 && $file->status_code < 300)))
{
$this->error = $file->error;
return !empty($this->data);
}
if (!$this->force_feed)
{
// Check if the supplied URL is a feed, if it isn't, look for it.
$locate = $this->registry->create('Locator', array(&$file, $this->timeout, $this->useragent, $this->max_checked_feeds));
if (!$locate->is_feed($file))
{
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$copyStatusCode = $file->status_code; //FreshRSS
$copyContentType = $file->headers['content-type']; //FreshRSS
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// We need to unset this so that if SimplePie::set_file() has been called that object is untouched
unset($file);
try
{
if (!($file = $locate->find($this->autodiscovery, $this->all_discovered_feeds)))
{
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$this->error = "A feed could not be found at `$this->feed_url`; the status code is `$copyStatusCode` and content-type is `$copyContentType`"; //FreshRSS
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$this->registry->call('Misc', 'error', array($this->error, E_USER_NOTICE, __FILE__, __LINE__));
return false;
}
}
catch (SimplePie_Exception $e)
{
// This is usually because DOMDocument doesn't exist
$this->error = $e->getMessage();
$this->registry->call('Misc', 'error', array($this->error, E_USER_NOTICE, $e->getFile(), $e->getLine()));
return false;
}
if ($cache)
{
$this->data = array('url' => $this->feed_url, 'feed_url' => $file->url, 'build' => SIMPLEPIE_BUILD);
$this->data['mtime'] = time(); //FreshRSS
$this->data['md5'] = empty($md5) ? $this->cleanMd5($file->body) : $md5; //FreshRSS
if (!$cache->save($this))
{
trigger_error("$this->cache_location is not writeable. Make sure you've set the correct relative or absolute path, and that the location is server-writable.", E_USER_WARNING);
}
$cache = $this->registry->call('Cache', 'get_handler', array($this->cache_location, call_user_func($this->cache_name_function, $file->url), 'spc'));
}
$this->feed_url = $file->url;
}
$locate = null;
}
$this->raw_data = $file->body;
$this->permanent_url = $file->permanent_url; //FreshRSS
$headers = $file->headers;
$sniffer = $this->registry->create('Content_Type_Sniffer', array(&$file));
$sniffed = $sniffer->get_type();
return array($headers, $sniffed);
}
/**
* Get the error message for the occured error
*
* @return string|array Error message, or array of messages for multifeeds
*/
public function error()
{
return $this->error;
}
/**
* Get the raw XML
*
* This is the same as the old `$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_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_TYPE_NONE Unknown.
* @see SIMPLEPIE_TYPE_RSS_090 RSS 0.90.
* @see SIMPLEPIE_TYPE_RSS_091_NETSCAPE RSS 0.91 (Netscape).
* @see SIMPLEPIE_TYPE_RSS_091_USERLAND RSS 0.91 (Userland).
* @see SIMPLEPIE_TYPE_RSS_091 RSS 0.91.
* @see SIMPLEPIE_TYPE_RSS_092 RSS 0.92.
* @see SIMPLEPIE_TYPE_RSS_093 RSS 0.93.
* @see SIMPLEPIE_TYPE_RSS_094 RSS 0.94.
* @see SIMPLEPIE_TYPE_RSS_10 RSS 1.0.
* @see SIMPLEPIE_TYPE_RSS_20 RSS 2.0.x.
* @see SIMPLEPIE_TYPE_RSS_RDF RDF-based RSS.
* @see SIMPLEPIE_TYPE_RSS_SYNDICATION Non-RDF-based RSS (truly intended as syndication format).
* @see SIMPLEPIE_TYPE_RSS_ALL Any version of RSS.
* @see SIMPLEPIE_TYPE_ATOM_03 Atom 0.3.
* @see SIMPLEPIE_TYPE_ATOM_10 Atom 1.0.
* @see SIMPLEPIE_TYPE_ATOM_ALL Any version of Atom.
* @see SIMPLEPIE_TYPE_ALL Any known/supported feed type.
* @return int SIMPLEPIE_TYPE_* constant
*/
public function get_type()
{
if (!isset($this->data['type']))
{
$this->data['type'] = SIMPLEPIE_TYPE_ALL;
if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed']))
{
$this->data['type'] &= SIMPLEPIE_TYPE_ATOM_10;
}
elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed']))
{
$this->data['type'] &= SIMPLEPIE_TYPE_ATOM_03;
}
elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF']))
{
if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_10]['channel'])
|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_10]['image'])
|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_10]['item'])
|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_10]['textinput']))
{
$this->data['type'] &= SIMPLEPIE_TYPE_RSS_10;
}
if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_090]['channel'])
|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_090]['image'])
|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_090]['item'])
|| isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_090]['textinput']))
{
$this->data['type'] &= SIMPLEPIE_TYPE_RSS_090;
}
}
elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss']))
{
$this->data['type'] &= SIMPLEPIE_TYPE_RSS_ALL;
if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['attribs']['']['version']))
{
switch (trim($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['attribs']['']['version']))
{
case '0.91':
$this->data['type'] &= SIMPLEPIE_TYPE_RSS_091;
if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['skiphours']['hour'][0]['data']))
{
switch (trim($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][SIMPLEPIE_NAMESPACE_RSS_20]['skiphours']['hour'][0]['data']))
{
case '0':
$this->data['type'] &= SIMPLEPIE_TYPE_RSS_091_NETSCAPE;
break;
case '24':
$this->data['type'] &= SIMPLEPIE_TYPE_RSS_091_USERLAND;
break;
}
}
break;
case '0.92':
$this->data['type'] &= SIMPLEPIE_TYPE_RSS_092;
break;
case '0.93':
$this->data['type'] &= SIMPLEPIE_TYPE_RSS_093;
break;
case '0.94':
$this->data['type'] &= SIMPLEPIE_TYPE_RSS_094;
break;
case '2.0':
$this->data['type'] &= SIMPLEPIE_TYPE_RSS_20;
break;
}
}
}
else
{
$this->data['type'] = SIMPLEPIE_TYPE_NONE;
}
}
return $this->data['type'];
}
/**
* 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.
*
* @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 ($permanent) //FreshRSS
{
if ($this->permanent_url !== null)
{
return $this->sanitize($this->permanent_url, SIMPLEPIE_CONSTRUCT_IRI);
}
}
else
{
if ($this->feed_url !== null)
{
return $this->sanitize($this->feed_url, SIMPLEPIE_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_NAMESPACE_MEDIARSS, 'group');
* $content = $group[0]['child'][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 & SIMPLEPIE_TYPE_ATOM_10)
{
if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]['child'][$namespace][$tag]))
{
return $this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]['child'][$namespace][$tag];
}
}
if ($type & SIMPLEPIE_TYPE_ATOM_03)
{
if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]['child'][$namespace][$tag]))
{
return $this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]['child'][$namespace][$tag];
}
}
if ($type & SIMPLEPIE_TYPE_RSS_RDF)
{
if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][$namespace][$tag]))
{
return $this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['child'][$namespace][$tag];
}
}
if ($type & SIMPLEPIE_TYPE_RSS_SYNDICATION)
{
if (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][$namespace][$tag]))
{
return $this->data['child'][SIMPLEPIE_NAMESPACE_RSS_20]['rss'][0]['child'][$namespace][$tag];
}
}
return null;
}
/**
* 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 & SIMPLEPIE_TYPE_ATOM_ALL)
{
if ($return = $this->get_feed_tags($namespace, $tag))
{
return $return;
}
}
if ($type & SIMPLEPIE_TYPE_RSS_10)
{
if ($channel = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'channel'))
{
if (isset($channel[0]['child'][$namespace][$tag]))
{
return $channel[0]['child'][$namespace][$tag];
}
}
}
if ($type & SIMPLEPIE_TYPE_RSS_090)
{
if ($channel = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'channel'))
{
if (isset($channel[0]['child'][$namespace][$tag]))
{
return $channel[0]['child'][$namespace][$tag];
}
}
}
if ($type & SIMPLEPIE_TYPE_RSS_SYNDICATION)
{
if ($channel = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'channel'))
{
if (isset($channel[0]['child'][$namespace][$tag]))
{
return $channel[0]['child'][$namespace][$tag];
}
}
}
return null;
}
/**
* 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 & SIMPLEPIE_TYPE_RSS_10)
{
if ($image = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'image'))
{
if (isset($image[0]['child'][$namespace][$tag]))
{
return $image[0]['child'][$namespace][$tag];
}
}
}
if ($type & SIMPLEPIE_TYPE_RSS_090)
{
if ($image = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'image'))
{
if (isset($image[0]['child'][$namespace][$tag]))
{
return $image[0]['child'][$namespace][$tag];
}
}
}
if ($type & SIMPLEPIE_TYPE_RSS_SYNDICATION)
{
if ($image = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'image'))
{
if (isset($image[0]['child'][$namespace][$tag]))
{
return $image[0]['child'][$namespace][$tag];
}
}
}
return null;
}
/**
* 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 = array())
{
if (!($this->get_type() & SIMPLEPIE_TYPE_RSS_SYNDICATION) && !empty($element['xml_base_explicit']) && isset($element['xml_base']))
{
return $element['xml_base'];
}
elseif ($this->get_link() !== null)
{
return $this->get_link();
}
else
{
return $this->subscribe_url();
}
}
/**
* Sanitize feed data
*
* @access private
* @see SimplePie_Sanitize::sanitize()
* @param string $data Data to sanitize
* @param int $type One of the 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();
$this->registry->call('Misc', 'error', array($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(SIMPLEPIE_NAMESPACE_ATOM_10, 'title'))
{
return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_10_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'title'))
{
return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_03_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'title'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'title'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'title'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'title'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'title'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
else
{
return null;
}
}
/**
* 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];
}
else
{
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 = array();
foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'category') as $category)
{
$term = null;
$scheme = null;
$label = null;
if (isset($category['attribs']['']['term']))
{
$term = $this->sanitize($category['attribs']['']['term'], SIMPLEPIE_CONSTRUCT_TEXT);
}
if (isset($category['attribs']['']['scheme']))
{
$scheme = $this->sanitize($category['attribs']['']['scheme'], SIMPLEPIE_CONSTRUCT_TEXT);
}
if (isset($category['attribs']['']['label']))
{
$label = $this->sanitize($category['attribs']['']['label'], SIMPLEPIE_CONSTRUCT_TEXT);
}
$categories[] = $this->registry->create('Category', array($term, $scheme, $label));
}
foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'category') as $category)
{
// This is really the label, but keep this as the term also for BC.
// Label will also work on retrieving because that falls back to term.
$term = $this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT);
if (isset($category['attribs']['']['domain']))
{
$scheme = $this->sanitize($category['attribs']['']['domain'], SIMPLEPIE_CONSTRUCT_TEXT);
}
else
{
$scheme = null;
}
$categories[] = $this->registry->create('Category', array($term, $scheme, null));
}
foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'subject') as $category)
{
$categories[] = $this->registry->create('Category', array($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
}
foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'subject') as $category)
{
$categories[] = $this->registry->create('Category', array($this->sanitize($category['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
}
if (!empty($categories))
{
return array_unique($categories);
}
else
{
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];
}
else
{
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 = array();
foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'author') as $author)
{
$name = null;
$uri = null;
$email = null;
if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
{
$name = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
{
$uri = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
}
if (isset($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
{
$email = $this->sanitize($author['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
if ($name !== null || $email !== null || $uri !== null)
{
$authors[] = $this->registry->create('Author', array($name, $uri, $email));
}
}
if ($author = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'author'))
{
$name = null;
$url = null;
$email = null;
if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
{
$name = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
{
$url = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
}
if (isset($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
{
$email = $this->sanitize($author[0]['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
if ($name !== null || $email !== null || $url !== null)
{
$authors[] = $this->registry->create('Author', array($name, $url, $email));
}
}
foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'creator') as $author)
{
$authors[] = $this->registry->create('Author', array($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
}
foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'creator') as $author)
{
$authors[] = $this->registry->create('Author', array($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
}
foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'author') as $author)
{
$authors[] = $this->registry->create('Author', array($this->sanitize($author['data'], SIMPLEPIE_CONSTRUCT_TEXT), null, null));
}
if (!empty($authors))
{
return array_unique($authors);
}
else
{
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];
}
else
{
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 = array();
foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'contributor') as $contributor)
{
$name = null;
$uri = null;
$email = null;
if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data']))
{
$name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data']))
{
$uri = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['uri'][0]));
}
if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data']))
{
$email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
if ($name !== null || $email !== null || $uri !== null)
{
$contributors[] = $this->registry->create('Author', array($name, $uri, $email));
}
}
foreach ((array) $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'contributor') as $contributor)
{
$name = null;
$url = null;
$email = null;
if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data']))
{
$name = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['name'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data']))
{
$url = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['url'][0]));
}
if (isset($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data']))
{
$email = $this->sanitize($contributor['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['email'][0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
if ($name !== null || $email !== null || $url !== null)
{
$contributors[] = $this->registry->create('Author', array($name, $url, $email));
}
}
if (!empty($contributors))
{
return array_unique($contributors);
}
else
{
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];
}
else
{
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']))
{
$this->data['links'] = array();
if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'link'))
{
foreach ($links as $link)
{
if (isset($link['attribs']['']['href']))
{
$link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
$this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));
}
}
}
if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'link'))
{
foreach ($links as $link)
{
if (isset($link['attribs']['']['href']))
{
$link_rel = (isset($link['attribs']['']['rel'])) ? $link['attribs']['']['rel'] : 'alternate';
$this->data['links'][$link_rel][] = $this->sanitize($link['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($link));
}
}
}
if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'link'))
{
$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
}
if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'link'))
{
$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
}
if ($links = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'link'))
{
$this->data['links']['alternate'][] = $this->sanitize($links[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($links[0]));
}
$keys = array_keys($this->data['links']);
foreach ($keys as $key)
{
if ($this->registry->call('Misc', 'is_isegment_nz_nc', array($key)))
{
if (isset($this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]))
{
$this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key] = array_merge($this->data['links'][$key], $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key]);
$this->data['links'][$key] =& $this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key];
}
else
{
$this->data['links'][SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY . $key] =& $this->data['links'][$key];
}
}
elseif (substr($key, 0, 41) === SIMPLEPIE_IANA_LINK_RELATIONS_REGISTRY)
{
$this->data['links'][substr($key, 41)] =& $this->data['links'][$key];
}
$this->data['links'][$key] = array_unique($this->data['links'][$key]);
}
}
if (isset($this->data['links'][$rel]))
{
return $this->data['links'][$rel];
}
else
{
return null;
}
}
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(SIMPLEPIE_NAMESPACE_ATOM_10, 'subtitle'))
{
return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_10_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'tagline'))
{
return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_03_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'description'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'description'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_MAYBE_HTML, $this->get_base($return[0]));
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'description'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'description'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'description'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'summary'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ITUNES, 'subtitle'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_HTML, $this->get_base($return[0]));
}
else
{
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(SIMPLEPIE_NAMESPACE_ATOM_10, 'rights'))
{
return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_10_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'copyright'))
{
return $this->sanitize($return[0]['data'], $this->registry->call('Misc', 'atom_03_construct_type', array($return[0]['attribs'])), $this->get_base($return[0]));
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'copyright'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'rights'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'rights'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
else
{
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(SIMPLEPIE_NAMESPACE_RSS_20, 'language'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_11, 'language'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_DC_10, 'language'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]['xml_lang']))
{
return $this->sanitize($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_10]['feed'][0]['xml_lang'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]['xml_lang']))
{
return $this->sanitize($this->data['child'][SIMPLEPIE_NAMESPACE_ATOM_03]['feed'][0]['xml_lang'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif (isset($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['xml_lang']))
{
return $this->sanitize($this->data['child'][SIMPLEPIE_NAMESPACE_RDF]['RDF'][0]['xml_lang'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif (isset($this->data['headers']['content-language']))
{
return $this->sanitize($this->data['headers']['content-language'], SIMPLEPIE_CONSTRUCT_TEXT);
}
else
{
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(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'lat'))
{
return (float) $return[0]['data'];
}
elseif (($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', trim($return[0]['data']), $match))
{
return (float) $match[1];
}
else
{
return null;
}
}
/**
* Get the longitude coordinates for the feed
*
* Compatible with the W3C WGS84 Basic Geo and GeoRSS specifications
*
* Uses `<geo:long>`, `<geo:lon>` or `<georss:point>`
*
* @since 1.0
* @link http://www.w3.org/2003/01/geo/ W3C WGS84 Basic Geo
* @link http://www.georss.org/ GeoRSS
* @return string|null
*/
public function get_longitude()
{
if ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'long'))
{
return (float) $return[0]['data'];
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_W3C_BASIC_GEO, 'lon'))
{
return (float) $return[0]['data'];
}
elseif (($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_GEORSS, 'point')) && preg_match('/^((?:-)?[0-9]+(?:\.[0-9]+)) ((?:-)?[0-9]+(?:\.[0-9]+))$/', trim($return[0]['data']), $match))
{
return (float) $match[2];
}
else
{
return null;
}
}
/**
* Get the feed logo's title
*
* RSS 0.9.0, 1.0 and 2.0 feeds are allowed to have a "feed logo" title.
*
* Uses `<image><title>` or `<image><dc:title>`
*
* @return string|null
*/
public function get_image_title()
{
if ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'title'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'title'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'title'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_DC_11, 'title'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_DC_10, 'title'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_TEXT);
}
else
{
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(SIMPLEPIE_NAMESPACE_ITUNES, 'image'))
{
return $this->sanitize($return[0]['attribs']['']['href'], SIMPLEPIE_CONSTRUCT_IRI);
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'logo'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
}
elseif ($return = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'icon'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
}
elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'url'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
}
elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'url'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
}
elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'url'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
}
else
{
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(SIMPLEPIE_NAMESPACE_RSS_10, 'link'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
}
elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'link'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
}
elseif ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'link'))
{
return $this->sanitize($return[0]['data'], SIMPLEPIE_CONSTRUCT_IRI, $this->get_base($return[0]));
}
else
{
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 88.0 if no width is specified and
* the feed is an RSS 2.0 feed.
*
* @return int|float|null
*/
public function get_image_width()
{
if ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'width'))
{
return round($return[0]['data']);
}
elseif ($this->get_type() & SIMPLEPIE_TYPE_RSS_SYNDICATION && $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'url'))
{
return 88.0;
}
else
{
return null;
}
}
/**
* Get the feed logo's height
*
* RSS 2.0 feeds are allowed to have a "feed logo" height.
*
* Uses `<image><height>` or defaults to 31.0 if no height is specified and
* the feed is an RSS 2.0 feed.
*
* @return int|float|null
*/
public function get_image_height()
{
if ($return = $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'height'))
{
return round($return[0]['data']);
}
elseif ($this->get_type() & SIMPLEPIE_TYPE_RSS_SYNDICATION && $this->get_image_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'url'))
{
return 31.0;
}
else
{
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 $qty;
}
else
{
return ($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];
}
else
{
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 array|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);
}
else
{
$this->data['items'] = array();
if ($items = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_10, 'entry'))
{
$keys = array_keys($items);
foreach ($keys as $key)
{
$this->data['items'][] = $this->registry->create('Item', array($this, $items[$key]));
}
}
if ($items = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_ATOM_03, 'entry'))
{
$keys = array_keys($items);
foreach ($keys as $key)
{
$this->data['items'][] = $this->registry->create('Item', array($this, $items[$key]));
}
}
if ($items = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_10, 'item'))
{
$keys = array_keys($items);
foreach ($keys as $key)
{
$this->data['items'][] = $this->registry->create('Item', array($this, $items[$key]));
}
}
if ($items = $this->get_feed_tags(SIMPLEPIE_NAMESPACE_RSS_090, 'item'))
{
$keys = array_keys($items);
foreach ($keys as $key)
{
$this->data['items'][] = $this->registry->create('Item', array($this, $items[$key]));
}
}
if ($items = $this->get_channel_tags(SIMPLEPIE_NAMESPACE_RSS_20, 'item'))
{
$keys = array_keys($items);
foreach ($keys as $key)
{
$this->data['items'][] = $this->registry->create('Item', array($this, $items[$key]));
}
}
}
}
if (!empty($this->data['items']))
{
// If we want to order it by date, check if all items have a date, and then sort it
if ($this->order_by_date && empty($this->multifeed_objects))
{
if (!isset($this->data['ordered_items']))
{
$do_sort = true;
foreach ($this->data['items'] as $item)
{
if (!$item->get_date('U'))
{
$do_sort = false;
break;
}
}
$item = null;
$this->data['ordered_items'] = $this->data['items'];
if ($do_sort)
{
usort($this->data['ordered_items'], array(get_class($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, $start);
}
else
{
return array_slice($items, $start, $end);
}
}
else
{
return array();
}
}
/**
* Set the favicon handler
*
* @deprecated Use your own favicon handling instead
*/
public function set_favicon_handler($page = false, $qs = 'i')
{
$level = defined('E_USER_DEPRECATED') ? E_USER_DEPRECATED : E_USER_WARNING;
trigger_error('Favicon handling has been removed, please use your own handling', $level);
return false;
}
/**
* Get the favicon for the current feed
*
* @deprecated Use your own favicon handling instead
*/
public function get_favicon()
{
$level = defined('E_USER_DEPRECATED') ? E_USER_DEPRECATED : E_USER_WARNING;
trigger_error('Favicon handling has been removed, please use your own handling', $level);
if (($url = $this->get_link()) !== null)
{
return 'http://g.etfv.co/' . urlencode($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)
{
$level = defined('E_USER_DEPRECATED') ? E_USER_DEPRECATED : E_USER_WARNING;
trigger_error('subscribe_*() has been deprecated, implement the callback yourself', $level);
return '';
}
if ($method === 'enable_xml_dump')
{
$level = defined('E_USER_DEPRECATED') ? E_USER_DEPRECATED : E_USER_WARNING;
trigger_error('enable_xml_dump() has been deprecated, use get_raw_data() instead', $level);
return false;
}
$class = get_class($this);
$trace = debug_backtrace();
$file = $trace[0]['file'];
$line = $trace[0]['line'];
trigger_error("Call to undefined method $class::$method() in $file on line $line", E_USER_ERROR);
}
/**
* Sorting callback for items
*
* @access private
* @param SimplePie $a
* @param SimplePie $b
* @return boolean
*/
public static function sort_items($a, $b)
{
return $a->get_date('U') <= $b->get_date('U');
}
/**
* 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)
{
$items = array();
foreach ($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);
}
}
$do_sort = true;
foreach ($items as $item)
{
if (!$item->get_date('U'))
{
$do_sort = false;
break;
}
}
$item = null;
if ($do_sort)
{
usort($items, array(get_class($urls[0]), 'sort_items'));
}
if ($end === 0)
{
return array_slice($items, $start);
}
else
{
return array_slice($items, $start, $end);
}
}
else
{
trigger_error('Cannot merge zero SimplePie objects', E_USER_WARNING);
return array();
}
}
}
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