get_error_message(); /** * Filter the blog title for use as the feed title. * * @since 2.2.0 * * @param string $title The current blog title. * @param string $sep Separator used by wp_title(). */ $title = apply_filters( 'get_wp_title_rss', $title, $sep ); return $title; } /** * Display the blog title for display of the feed title. * * @package WordPress * @subpackage Feed * @since 2.2.0 * @see wp_title() $sep parameter usage. * * @param string $sep Optional. */ function wp_title_rss( $sep = '»' ) { /** * Filter the blog title for display of the feed title. * * @since 2.2.0 * * @see get_wp_title_rss() * * @param string $wp_title The current blog title. * @param string $sep Separator used by wp_title(). */ echo apply_filters( 'wp_title_rss', get_wp_title_rss( $sep ), $sep ); } /** * Retrieve the current post title for the feed. * * @package WordPress * @subpackage Feed * @since 2.0.0 * * @return string Current post title. */ function get_the_title_rss() { $title = get_the_title(); /** * Filter the post title for use in a feed. * * @since 1.2.0 * * @param string $title The current post title. */ $title = apply_filters( 'the_title_rss', $title ); return $title; } /** * Display the post title in the feed. * * @package WordPress * @subpackage Feed * @since 0.71 * @uses get_the_title_rss() Used to retrieve current post title. */ function the_title_rss() { echo get_the_title_rss(); } /** * Retrieve the post content for feeds. * * @package WordPress * @subpackage Feed * @since 2.9.0 * @see get_the_content() * * @param string $feed_type The type of feed. rss2 | atom | rss | rdf * @return string The filtered content. */ function get_the_content_feed($feed_type = null) { if ( !$feed_type ) $feed_type = get_default_feed(); /** This filter is documented in wp-admin/post-template.php */ $content = apply_filters( 'the_content', get_the_content() ); $content = str_replace(']]>', ']]>', $content); /** * Filter the post content for use in feeds. * * @since 2.9.0 * * @param string $content The current post content. * @param string $feed_type Type of feed. Possible values include 'rss2', 'atom'. * Default 'rss2'. */ return apply_filters( 'the_content_feed', $content, $feed_type ); } /** * Display the post content for feeds. * * @package WordPress * @subpackage Feed * @since 2.9.0 * @uses apply_filters() Calls 'the_content_feed' on the content before processing. * @see get_the_content() * * @param string $feed_type The type of feed. rss2 | atom | rss | rdf */ function the_content_feed($feed_type = null) { echo get_the_content_feed($feed_type); } /** * Display the post excerpt for the feed. * * @package WordPress * @subpackage Feed * @since 0.71 */ function the_excerpt_rss() { $output = get_the_excerpt(); /** * Filter the post excerpt for a feed. * * @since 1.2.0 * * @param string $output The current post excerpt. */ echo apply_filters( 'the_excerpt_rss', $output ); } /** * Display the permalink to the post for use in feeds. * * @package WordPress * @subpackage Feed * @since 2.3.0 */ function the_permalink_rss() { /** * Filter the permalink to the post for use in feeds. * * @since 2.3.0 * * @param string $post_permalink The current post permalink. */ echo esc_url( apply_filters( 'the_permalink_rss', get_permalink() ) ); } /** * Outputs the link to the comments for the current post in an xml safe way * * @since 3.0.0 * @return none */ function comments_link_feed() { /** * Filter the comments permalink for the current post. * * @since 3.6.0 * * @param string $comment_permalink The current comment permalink with * '#comments' appended. */ echo esc_url( apply_filters( 'comments_link_feed', get_comments_link() ) ); } /** * Display the feed GUID for the current comment. * * @package WordPress * @subpackage Feed * @since 2.5.0 * * @param int|object $comment_id Optional comment object or id. Defaults to global comment object. */ function comment_guid($comment_id = null) { echo esc_url( get_comment_guid($comment_id) ); } /** * Retrieve the feed GUID for the current comment. * * @package WordPress * @subpackage Feed * @since 2.5.0 * * @param int|object $comment_id Optional comment object or id. Defaults to global comment object. * @return bool|string false on failure or guid for comment on success. */ function get_comment_guid($comment_id = null) { $comment = get_comment($comment_id); if ( !is_object($comment) ) return false; return get_the_guid($comment->comment_post_ID) . '#comment-' . $comment->comment_ID; } /** * Display the link to the comments. * * @since 1.5.0 */ function comment_link() { /** * Filter the current comment's permalink. * * @since 3.6.0 * * @see get_comment_link() * * @param string $comment_permalink The current comment permalink. */ echo esc_url( apply_filters( 'comment_link', get_comment_link() ) ); } /** * Retrieve the current comment author for use in the feeds. * * @package WordPress * @subpackage Feed * @since 2.0.0 * @uses get_comment_author() * * @return string Comment Author */ function get_comment_author_rss() { /** * Filter the current comment author for use in a feed. * * @since 1.5.0 * * @see get_comment_author() * * @param string $comment_author The current comment author. */ return apply_filters( 'comment_author_rss', get_comment_author() ); } /** * Display the current comment author in the feed. * * @package WordPress * @subpackage Feed * @since 1.0.0 */ function comment_author_rss() { echo get_comment_author_rss(); } /** * Display the current comment content for use in the feeds. * * @package WordPress * @subpackage Feed * @since 1.0.0 * @uses get_comment_text() */ function comment_text_rss() { $comment_text = get_comment_text(); /** * Filter the current comment content for use in a feed. * * @since 1.5.0 * * @param string $comment_text The content of the current comment. */ $comment_text = apply_filters( 'comment_text_rss', $comment_text ); echo $comment_text; } /** * Retrieve all of the post categories, formatted for use in feeds. * * All of the categories for the current post in the feed loop, will be * retrieved and have feed markup added, so that they can easily be added to the * RSS2, Atom, or RSS1 and RSS0.91 RDF feeds. * * @package WordPress * @subpackage Feed * @since 2.1.0 * * @param string $type Optional, default is the type returned by get_default_feed(). * @return string All of the post categories for displaying in the feed. */ function get_the_category_rss($type = null) { if ( empty($type) ) $type = get_default_feed(); $categories = get_the_category(); $tags = get_the_tags(); $the_list = ''; $cat_names = array(); $filter = 'rss'; if ( 'atom' == $type ) $filter = 'raw'; if ( !empty($categories) ) foreach ( (array) $categories as $category ) { $cat_names[] = sanitize_term_field('name', $category->name, $category->term_id, 'category', $filter); } if ( !empty($tags) ) foreach ( (array) $tags as $tag ) { $cat_names[] = sanitize_term_field('name', $tag->name, $tag->term_id, 'post_tag', $filter); } $cat_names = array_unique($cat_names); foreach ( $cat_names as $cat_name ) { if ( 'rdf' == $type ) $the_list .= "\t\t\n"; elseif ( 'atom' == $type ) /** This filter is documented in wp-includes/feed.php */ $the_list .= sprintf( '', esc_attr( apply_filters( 'get_bloginfo_rss', get_bloginfo( 'url' ) ) ), esc_attr( $cat_name ) ); else $the_list .= "\t\t\n"; } /** * Filter all of the post categories for display in a feed. * * @since 1.2.0 * * @param string $the_list All of the RSS post categories. * @param string $type Type of feed. Possible values include 'rss2', 'atom'. * Default 'rss2'. */ return apply_filters( 'the_category_rss', $the_list, $type ); } /** * Display the post categories in the feed. * * @package WordPress * @subpackage Feed * @since 0.71 * @see get_the_category_rss() For better explanation. * * @param string $type Optional, default is the type returned by get_default_feed(). */ function the_category_rss($type = null) { echo get_the_category_rss($type); } /** * Display the HTML type based on the blog setting. * * The two possible values are either 'xhtml' or 'html'. * * @package WordPress * @subpackage Feed * @since 2.2.0 */ function html_type_rss() { $type = get_bloginfo('html_type'); if (strpos($type, 'xhtml') !== false) $type = 'xhtml'; else $type = 'html'; echo $type; } /** * Display the rss enclosure for the current post. * * Uses the global $post to check whether the post requires a password and if * the user has the password for the post. If not then it will return before * displaying. * * Also uses the function get_post_custom() to get the post's 'enclosure' * metadata field and parses the value to display the enclosure(s). The * enclosure(s) consist of enclosure HTML tag(s) with a URI and other * attributes. * * @package WordPress * @subpackage Template * @since 1.5.0 * @uses get_post_custom() To get the current post enclosure metadata. */ function rss_enclosure() { if ( post_password_required() ) return; foreach ( (array) get_post_custom() as $key => $val) { if ($key == 'enclosure') { foreach ( (array) $val as $enc ) { $enclosure = explode("\n", $enc); // only get the first element, e.g. audio/mpeg from 'audio/mpeg mpga mp2 mp3' $t = preg_split('/[ \t]/', trim($enclosure[2]) ); $type = $t[0]; /** * Filter the RSS enclosure HTML link tag for the current post. * * @since 2.2.0 * * @param string $html_link_tag The HTML link tag with a URI and other attributes. */ echo apply_filters( 'rss_enclosure', '' . "\n" ); } } } } /** * Display the atom enclosure for the current post. * * Uses the global $post to check whether the post requires a password and if * the user has the password for the post. If not then it will return before * displaying. * * Also uses the function get_post_custom() to get the post's 'enclosure' * metadata field and parses the value to display the enclosure(s). The * enclosure(s) consist of link HTML tag(s) with a URI and other attributes. * * @package WordPress * @subpackage Template * @since 2.2.0 * @uses get_post_custom() To get the current post enclosure metadata. */ function atom_enclosure() { if ( post_password_required() ) return; foreach ( (array) get_post_custom() as $key => $val ) { if ($key == 'enclosure') { foreach ( (array) $val as $enc ) { $enclosure = explode("\n", $enc); /** * Filter the atom enclosure HTML link tag for the current post. * * @since 2.2.0 * * @param string $html_link_tag The HTML link tag with a URI and other attributes. */ echo apply_filters( 'atom_enclosure', '' . "\n" ); } } } } /** * Determine the type of a string of data with the data formatted. * * Tell whether the type is text, html, or xhtml, per RFC 4287 section 3.1. * * In the case of WordPress, text is defined as containing no markup, * xhtml is defined as "well formed", and html as tag soup (i.e., the rest). * * Container div tags are added to xhtml values, per section 3.1.1.3. * * @link http://www.atomenabled.org/developers/syndication/atom-format-spec.php#rfc.section.3.1 * * @package WordPress * @subpackage Feed * @since 2.5.0 * * @param string $data Input string * @return array array(type, value) */ function prep_atom_text_construct($data) { if (strpos($data, '<') === false && strpos($data, '&') === false) { return array('text', $data); } $parser = xml_parser_create(); xml_parse($parser, '
' . $data . '
', true); $code = xml_get_error_code($parser); xml_parser_free($parser); if (!$code) { if (strpos($data, '<') === false) { return array('text', $data); } else { $data = "
$data
"; return array('xhtml', $data); } } if (strpos($data, ']]>') == false) { return array('html', ""); } else { return array('html', htmlspecialchars($data)); } } /** * Display the link for the currently displayed feed in a XSS safe way. * * Generate a correct link for the atom:self element. * * @package WordPress * @subpackage Feed * @since 2.5.0 */ function self_link() { $host = @parse_url(home_url()); /** * Filter the current feed URL. * * @since 3.6.0 * * @see set_url_scheme() * @see wp_unslash() * * @param string $feed_link The link for the feed with set URL scheme. */ echo esc_url( apply_filters( 'self_link', set_url_scheme( 'http://' . $host['host'] . wp_unslash( $_SERVER['REQUEST_URI'] ) ) ) ); } /** * Return the content type for specified feed type. * * @package WordPress * @subpackage Feed * @since 2.8.0 */ function feed_content_type( $type = '' ) { if ( empty($type) ) $type = get_default_feed(); $types = array( 'rss' => 'application/rss+xml', 'rss2' => 'application/rss+xml', 'rss-http' => 'text/xml', 'atom' => 'application/atom+xml', 'rdf' => 'application/rdf+xml' ); $content_type = ( !empty($types[$type]) ) ? $types[$type] : 'application/octet-stream'; /** * Filter the content type for a specific feed type. * * @since 2.8.0 * * @param string $content_type Content type indicating the type of data that a feed contains. * @param string $type Type of feed. Possible values include 'rss2', 'atom'. * Default 'rss2'. */ return apply_filters( 'feed_content_type', $content_type, $type ); } /** * Build SimplePie object based on RSS or Atom feed from URL. * * @since 2.8.0 * * @param mixed $url URL of feed to retrieve. If an array of URLs, the feeds are merged * using SimplePie's multifeed feature. * See also {@link ​http://simplepie.org/wiki/faq/typical_multifeed_gotchas} * * @return WP_Error|SimplePie WP_Error object on failure or SimplePie object on success */ function fetch_feed( $url ) { require_once( ABSPATH . WPINC . '/class-feed.php' ); $feed = new SimplePie(); $feed->set_sanitize_class( 'WP_SimplePie_Sanitize_KSES' ); // We must manually overwrite $feed->sanitize because SimplePie's // constructor sets it before we have a chance to set the sanitization class $feed->sanitize = new WP_SimplePie_Sanitize_KSES(); $feed->set_cache_class( 'WP_Feed_Cache' ); $feed->set_file_class( 'WP_SimplePie_File' ); $feed->set_feed_url( $url ); /** This filter is documented in wp-includes/class-feed.php */ $feed->set_cache_duration( apply_filters( 'wp_feed_cache_transient_lifetime', 12 * HOUR_IN_SECONDS, $url ) ); /** * Fires just before processing the SimplePie feed object. * * @since 3.0.0 * * @param object &$feed SimplePie feed object, passed by reference. * @param mixed $url URL of feed to retrieve. If an array of URLs, the feeds are merged. */ do_action_ref_array( 'wp_feed_options', array( &$feed, $url ) ); $feed->init(); $feed->handle_content_type(); if ( $feed->error() ) return new WP_Error( 'simplepie-error', $feed->error() ); return $feed; }