--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/web/wp-includes/rss.php Fri Mar 12 13:29:04 2010 +0000
@@ -0,0 +1,922 @@
+<?php
+/**
+ * MagpieRSS: a simple RSS integration tool
+ *
+ * A compiled file for RSS syndication
+ *
+ * @author Kellan Elliott-McCrea <kellan@protest.net>
+ * @version 0.51
+ * @license GPL
+ *
+ * @package External
+ * @subpackage MagpieRSS
+ */
+
+/*
+ * Hook to use another RSS object instead of MagpieRSS
+ */
+do_action('load_feed_engine');
+
+/** RSS feed constant. */
+define('RSS', 'RSS');
+define('ATOM', 'Atom');
+define('MAGPIE_USER_AGENT', 'WordPress/' . $GLOBALS['wp_version']);
+
+class MagpieRSS {
+ var $parser;
+ var $current_item = array(); // item currently being parsed
+ var $items = array(); // collection of parsed items
+ var $channel = array(); // hash of channel fields
+ var $textinput = array();
+ var $image = array();
+ var $feed_type;
+ var $feed_version;
+
+ // parser variables
+ var $stack = array(); // parser stack
+ var $inchannel = false;
+ var $initem = false;
+ var $incontent = false; // if in Atom <content mode="xml"> field
+ var $intextinput = false;
+ var $inimage = false;
+ var $current_field = '';
+ var $current_namespace = false;
+
+ //var $ERROR = "";
+
+ var $_CONTENT_CONSTRUCTS = array('content', 'summary', 'info', 'title', 'tagline', 'copyright');
+
+ function MagpieRSS ($source) {
+
+ # if PHP xml isn't compiled in, die
+ #
+ if ( !function_exists('xml_parser_create') )
+ trigger_error( "Failed to load PHP's XML Extension. http://www.php.net/manual/en/ref.xml.php" );
+
+ $parser = @xml_parser_create();
+
+ if ( !is_resource($parser) )
+ trigger_error( "Failed to create an instance of PHP's XML parser. http://www.php.net/manual/en/ref.xml.php");
+
+
+ $this->parser = $parser;
+
+ # pass in parser, and a reference to this object
+ # setup handlers
+ #
+ xml_set_object( $this->parser, $this );
+ xml_set_element_handler($this->parser,
+ 'feed_start_element', 'feed_end_element' );
+
+ xml_set_character_data_handler( $this->parser, 'feed_cdata' );
+
+ $status = xml_parse( $this->parser, $source );
+
+ if (! $status ) {
+ $errorcode = xml_get_error_code( $this->parser );
+ if ( $errorcode != XML_ERROR_NONE ) {
+ $xml_error = xml_error_string( $errorcode );
+ $error_line = xml_get_current_line_number($this->parser);
+ $error_col = xml_get_current_column_number($this->parser);
+ $errormsg = "$xml_error at line $error_line, column $error_col";
+
+ $this->error( $errormsg );
+ }
+ }
+
+ xml_parser_free( $this->parser );
+
+ $this->normalize();
+ }
+
+ function feed_start_element($p, $element, &$attrs) {
+ $el = $element = strtolower($element);
+ $attrs = array_change_key_case($attrs, CASE_LOWER);
+
+ // check for a namespace, and split if found
+ $ns = false;
+ if ( strpos( $element, ':' ) ) {
+ list($ns, $el) = split( ':', $element, 2);
+ }
+ if ( $ns and $ns != 'rdf' ) {
+ $this->current_namespace = $ns;
+ }
+
+ # if feed type isn't set, then this is first element of feed
+ # identify feed from root element
+ #
+ if (!isset($this->feed_type) ) {
+ if ( $el == 'rdf' ) {
+ $this->feed_type = RSS;
+ $this->feed_version = '1.0';
+ }
+ elseif ( $el == 'rss' ) {
+ $this->feed_type = RSS;
+ $this->feed_version = $attrs['version'];
+ }
+ elseif ( $el == 'feed' ) {
+ $this->feed_type = ATOM;
+ $this->feed_version = $attrs['version'];
+ $this->inchannel = true;
+ }
+ return;
+ }
+
+ if ( $el == 'channel' )
+ {
+ $this->inchannel = true;
+ }
+ elseif ($el == 'item' or $el == 'entry' )
+ {
+ $this->initem = true;
+ if ( isset($attrs['rdf:about']) ) {
+ $this->current_item['about'] = $attrs['rdf:about'];
+ }
+ }
+
+ // if we're in the default namespace of an RSS feed,
+ // record textinput or image fields
+ elseif (
+ $this->feed_type == RSS and
+ $this->current_namespace == '' and
+ $el == 'textinput' )
+ {
+ $this->intextinput = true;
+ }
+
+ elseif (
+ $this->feed_type == RSS and
+ $this->current_namespace == '' and
+ $el == 'image' )
+ {
+ $this->inimage = true;
+ }
+
+ # handle atom content constructs
+ elseif ( $this->feed_type == ATOM and in_array($el, $this->_CONTENT_CONSTRUCTS) )
+ {
+ // avoid clashing w/ RSS mod_content
+ if ($el == 'content' ) {
+ $el = 'atom_content';
+ }
+
+ $this->incontent = $el;
+
+
+ }
+
+ // if inside an Atom content construct (e.g. content or summary) field treat tags as text
+ elseif ($this->feed_type == ATOM and $this->incontent )
+ {
+ // if tags are inlined, then flatten
+ $attrs_str = join(' ',
+ array_map(array('MagpieRSS', 'map_attrs'),
+ array_keys($attrs),
+ array_values($attrs) ) );
+
+ $this->append_content( "<$element $attrs_str>" );
+
+ array_unshift( $this->stack, $el );
+ }
+
+ // Atom support many links per containging element.
+ // Magpie treats link elements of type rel='alternate'
+ // as being equivalent to RSS's simple link element.
+ //
+ elseif ($this->feed_type == ATOM and $el == 'link' )
+ {
+ if ( isset($attrs['rel']) and $attrs['rel'] == 'alternate' )
+ {
+ $link_el = 'link';
+ }
+ else {
+ $link_el = 'link_' . $attrs['rel'];
+ }
+
+ $this->append($link_el, $attrs['href']);
+ }
+ // set stack[0] to current element
+ else {
+ array_unshift($this->stack, $el);
+ }
+ }
+
+
+
+ function feed_cdata ($p, $text) {
+
+ if ($this->feed_type == ATOM and $this->incontent)
+ {
+ $this->append_content( $text );
+ }
+ else {
+ $current_el = join('_', array_reverse($this->stack));
+ $this->append($current_el, $text);
+ }
+ }
+
+ function feed_end_element ($p, $el) {
+ $el = strtolower($el);
+
+ if ( $el == 'item' or $el == 'entry' )
+ {
+ $this->items[] = $this->current_item;
+ $this->current_item = array();
+ $this->initem = false;
+ }
+ elseif ($this->feed_type == RSS and $this->current_namespace == '' and $el == 'textinput' )
+ {
+ $this->intextinput = false;
+ }
+ elseif ($this->feed_type == RSS and $this->current_namespace == '' and $el == 'image' )
+ {
+ $this->inimage = false;
+ }
+ elseif ($this->feed_type == ATOM and in_array($el, $this->_CONTENT_CONSTRUCTS) )
+ {
+ $this->incontent = false;
+ }
+ elseif ($el == 'channel' or $el == 'feed' )
+ {
+ $this->inchannel = false;
+ }
+ elseif ($this->feed_type == ATOM and $this->incontent ) {
+ // balance tags properly
+ // note: i don't think this is actually neccessary
+ if ( $this->stack[0] == $el )
+ {
+ $this->append_content("</$el>");
+ }
+ else {
+ $this->append_content("<$el />");
+ }
+
+ array_shift( $this->stack );
+ }
+ else {
+ array_shift( $this->stack );
+ }
+
+ $this->current_namespace = false;
+ }
+
+ function concat (&$str1, $str2="") {
+ if (!isset($str1) ) {
+ $str1="";
+ }
+ $str1 .= $str2;
+ }
+
+ function append_content($text) {
+ if ( $this->initem ) {
+ $this->concat( $this->current_item[ $this->incontent ], $text );
+ }
+ elseif ( $this->inchannel ) {
+ $this->concat( $this->channel[ $this->incontent ], $text );
+ }
+ }
+
+ // smart append - field and namespace aware
+ function append($el, $text) {
+ if (!$el) {
+ return;
+ }
+ if ( $this->current_namespace )
+ {
+ if ( $this->initem ) {
+ $this->concat(
+ $this->current_item[ $this->current_namespace ][ $el ], $text);
+ }
+ elseif ($this->inchannel) {
+ $this->concat(
+ $this->channel[ $this->current_namespace][ $el ], $text );
+ }
+ elseif ($this->intextinput) {
+ $this->concat(
+ $this->textinput[ $this->current_namespace][ $el ], $text );
+ }
+ elseif ($this->inimage) {
+ $this->concat(
+ $this->image[ $this->current_namespace ][ $el ], $text );
+ }
+ }
+ else {
+ if ( $this->initem ) {
+ $this->concat(
+ $this->current_item[ $el ], $text);
+ }
+ elseif ($this->intextinput) {
+ $this->concat(
+ $this->textinput[ $el ], $text );
+ }
+ elseif ($this->inimage) {
+ $this->concat(
+ $this->image[ $el ], $text );
+ }
+ elseif ($this->inchannel) {
+ $this->concat(
+ $this->channel[ $el ], $text );
+ }
+
+ }
+ }
+
+ function normalize () {
+ // if atom populate rss fields
+ if ( $this->is_atom() ) {
+ $this->channel['descripton'] = $this->channel['tagline'];
+ for ( $i = 0; $i < count($this->items); $i++) {
+ $item = $this->items[$i];
+ if ( isset($item['summary']) )
+ $item['description'] = $item['summary'];
+ if ( isset($item['atom_content']))
+ $item['content']['encoded'] = $item['atom_content'];
+
+ $this->items[$i] = $item;
+ }
+ }
+ elseif ( $this->is_rss() ) {
+ $this->channel['tagline'] = $this->channel['description'];
+ for ( $i = 0; $i < count($this->items); $i++) {
+ $item = $this->items[$i];
+ if ( isset($item['description']))
+ $item['summary'] = $item['description'];
+ if ( isset($item['content']['encoded'] ) )
+ $item['atom_content'] = $item['content']['encoded'];
+
+ $this->items[$i] = $item;
+ }
+ }
+ }
+
+ function is_rss () {
+ if ( $this->feed_type == RSS ) {
+ return $this->feed_version;
+ }
+ else {
+ return false;
+ }
+ }
+
+ function is_atom() {
+ if ( $this->feed_type == ATOM ) {
+ return $this->feed_version;
+ }
+ else {
+ return false;
+ }
+ }
+
+ function map_attrs($k, $v) {
+ return "$k=\"$v\"";
+ }
+
+ function error( $errormsg, $lvl = E_USER_WARNING ) {
+ // append PHP's error message if track_errors enabled
+ if ( isset($php_errormsg) ) {
+ $errormsg .= " ($php_errormsg)";
+ }
+ if ( MAGPIE_DEBUG ) {
+ trigger_error( $errormsg, $lvl);
+ } else {
+ error_log( $errormsg, 0);
+ }
+ }
+
+}
+
+if ( !function_exists('fetch_rss') ) :
+/**
+ * Build Magpie object based on RSS from URL.
+ *
+ * @since unknown
+ * @package External
+ * @subpackage MagpieRSS
+ *
+ * @param string $url URL to retrieve feed
+ * @return bool|MagpieRSS false on failure or MagpieRSS object on success.
+ */
+function fetch_rss ($url) {
+ // initialize constants
+ init();
+
+ if ( !isset($url) ) {
+ // error("fetch_rss called without a url");
+ return false;
+ }
+
+ // if cache is disabled
+ if ( !MAGPIE_CACHE_ON ) {
+ // fetch file, and parse it
+ $resp = _fetch_remote_file( $url );
+ if ( is_success( $resp->status ) ) {
+ return _response_to_rss( $resp );
+ }
+ else {
+ // error("Failed to fetch $url and cache is off");
+ return false;
+ }
+ }
+ // else cache is ON
+ else {
+ // Flow
+ // 1. check cache
+ // 2. if there is a hit, make sure its fresh
+ // 3. if cached obj fails freshness check, fetch remote
+ // 4. if remote fails, return stale object, or error
+
+ $cache = new RSSCache( MAGPIE_CACHE_DIR, MAGPIE_CACHE_AGE );
+
+ if (MAGPIE_DEBUG and $cache->ERROR) {
+ debug($cache->ERROR, E_USER_WARNING);
+ }
+
+
+ $cache_status = 0; // response of check_cache
+ $request_headers = array(); // HTTP headers to send with fetch
+ $rss = 0; // parsed RSS object
+ $errormsg = 0; // errors, if any
+
+ if (!$cache->ERROR) {
+ // return cache HIT, MISS, or STALE
+ $cache_status = $cache->check_cache( $url );
+ }
+
+ // if object cached, and cache is fresh, return cached obj
+ if ( $cache_status == 'HIT' ) {
+ $rss = $cache->get( $url );
+ if ( isset($rss) and $rss ) {
+ $rss->from_cache = 1;
+ if ( MAGPIE_DEBUG > 1) {
+ debug("MagpieRSS: Cache HIT", E_USER_NOTICE);
+ }
+ return $rss;
+ }
+ }
+
+ // else attempt a conditional get
+
+ // setup headers
+ if ( $cache_status == 'STALE' ) {
+ $rss = $cache->get( $url );
+ if ( isset($rss->etag) and $rss->last_modified ) {
+ $request_headers['If-None-Match'] = $rss->etag;
+ $request_headers['If-Last-Modified'] = $rss->last_modified;
+ }
+ }
+
+ $resp = _fetch_remote_file( $url, $request_headers );
+
+ if (isset($resp) and $resp) {
+ if ($resp->status == '304' ) {
+ // we have the most current copy
+ if ( MAGPIE_DEBUG > 1) {
+ debug("Got 304 for $url");
+ }
+ // reset cache on 304 (at minutillo insistent prodding)
+ $cache->set($url, $rss);
+ return $rss;
+ }
+ elseif ( is_success( $resp->status ) ) {
+ $rss = _response_to_rss( $resp );
+ if ( $rss ) {
+ if (MAGPIE_DEBUG > 1) {
+ debug("Fetch successful");
+ }
+ // add object to cache
+ $cache->set( $url, $rss );
+ return $rss;
+ }
+ }
+ else {
+ $errormsg = "Failed to fetch $url. ";
+ if ( $resp->error ) {
+ # compensate for Snoopy's annoying habbit to tacking
+ # on '\n'
+ $http_error = substr($resp->error, 0, -2);
+ $errormsg .= "(HTTP Error: $http_error)";
+ }
+ else {
+ $errormsg .= "(HTTP Response: " . $resp->response_code .')';
+ }
+ }
+ }
+ else {
+ $errormsg = "Unable to retrieve RSS file for unknown reasons.";
+ }
+
+ // else fetch failed
+
+ // attempt to return cached object
+ if ($rss) {
+ if ( MAGPIE_DEBUG ) {
+ debug("Returning STALE object for $url");
+ }
+ return $rss;
+ }
+
+ // else we totally failed
+ // error( $errormsg );
+
+ return false;
+
+ } // end if ( !MAGPIE_CACHE_ON ) {
+} // end fetch_rss()
+endif;
+
+/**
+ * Retrieve URL headers and content using WP HTTP Request API.
+ *
+ * @since unknown
+ * @package External
+ * @subpackage MagpieRSS
+ *
+ * @param string $url URL to retrieve
+ * @param array $headers Optional. Headers to send to the URL.
+ * @return Snoopy style response
+ */
+function _fetch_remote_file ($url, $headers = "" ) {
+ $resp = wp_remote_request($url, array('headers' => $headers, 'timeout' => MAGPIE_FETCH_TIME_OUT));
+ if ( is_wp_error($resp) ) {
+ $error = array_shift($resp->errors);
+
+ $resp = new stdClass;
+ $resp->status = 500;
+ $resp->response_code = 500;
+ $resp->error = $error[0] . "\n"; //\n = Snoopy compatibility
+ return $resp;
+ }
+ $response = new stdClass;
+ $response->status = $resp['response']['code'];
+ $response->response_code = $resp['response']['code'];
+ $response->headers = $resp['headers'];
+ $response->results = $resp['body'];
+
+ return $response;
+}
+
+/**
+ * Retrieve
+ *
+ * @since unknown
+ * @package External
+ * @subpackage MagpieRSS
+ *
+ * @param unknown_type $resp
+ * @return unknown
+ */
+function _response_to_rss ($resp) {
+ $rss = new MagpieRSS( $resp->results );
+
+ // if RSS parsed successfully
+ if ( $rss && (!isset($rss->ERROR) || !$rss->ERROR) ) {
+
+ // find Etag, and Last-Modified
+ foreach( (array) $resp->headers as $h) {
+ // 2003-03-02 - Nicola Asuni (www.tecnick.com) - fixed bug "Undefined offset: 1"
+ if (strpos($h, ": ")) {
+ list($field, $val) = explode(": ", $h, 2);
+ }
+ else {
+ $field = $h;
+ $val = "";
+ }
+
+ if ( $field == 'ETag' ) {
+ $rss->etag = $val;
+ }
+
+ if ( $field == 'Last-Modified' ) {
+ $rss->last_modified = $val;
+ }
+ }
+
+ return $rss;
+ } // else construct error message
+ else {
+ $errormsg = "Failed to parse RSS file.";
+
+ if ($rss) {
+ $errormsg .= " (" . $rss->ERROR . ")";
+ }
+ // error($errormsg);
+
+ return false;
+ } // end if ($rss and !$rss->error)
+}
+
+/**
+ * Setup constants with default values, unless user overrides.
+ *
+ * @since unknown
+ * @package External
+ * @subpackage MagpieRSS
+ */
+function init () {
+ if ( defined('MAGPIE_INITALIZED') ) {
+ return;
+ }
+ else {
+ define('MAGPIE_INITALIZED', 1);
+ }
+
+ if ( !defined('MAGPIE_CACHE_ON') ) {
+ define('MAGPIE_CACHE_ON', 1);
+ }
+
+ if ( !defined('MAGPIE_CACHE_DIR') ) {
+ define('MAGPIE_CACHE_DIR', './cache');
+ }
+
+ if ( !defined('MAGPIE_CACHE_AGE') ) {
+ define('MAGPIE_CACHE_AGE', 60*60); // one hour
+ }
+
+ if ( !defined('MAGPIE_CACHE_FRESH_ONLY') ) {
+ define('MAGPIE_CACHE_FRESH_ONLY', 0);
+ }
+
+ if ( !defined('MAGPIE_DEBUG') ) {
+ define('MAGPIE_DEBUG', 0);
+ }
+
+ if ( !defined('MAGPIE_USER_AGENT') ) {
+ $ua = 'WordPress/' . $GLOBALS['wp_version'];
+
+ if ( MAGPIE_CACHE_ON ) {
+ $ua = $ua . ')';
+ }
+ else {
+ $ua = $ua . '; No cache)';
+ }
+
+ define('MAGPIE_USER_AGENT', $ua);
+ }
+
+ if ( !defined('MAGPIE_FETCH_TIME_OUT') ) {
+ define('MAGPIE_FETCH_TIME_OUT', 2); // 2 second timeout
+ }
+
+ // use gzip encoding to fetch rss files if supported?
+ if ( !defined('MAGPIE_USE_GZIP') ) {
+ define('MAGPIE_USE_GZIP', true);
+ }
+}
+
+function is_info ($sc) {
+ return $sc >= 100 && $sc < 200;
+}
+
+function is_success ($sc) {
+ return $sc >= 200 && $sc < 300;
+}
+
+function is_redirect ($sc) {
+ return $sc >= 300 && $sc < 400;
+}
+
+function is_error ($sc) {
+ return $sc >= 400 && $sc < 600;
+}
+
+function is_client_error ($sc) {
+ return $sc >= 400 && $sc < 500;
+}
+
+function is_server_error ($sc) {
+ return $sc >= 500 && $sc < 600;
+}
+
+class RSSCache {
+ var $BASE_CACHE; // where the cache files are stored
+ var $MAX_AGE = 43200; // when are files stale, default twelve hours
+ var $ERROR = ''; // accumulate error messages
+
+ function RSSCache ($base='', $age='') {
+ $this->BASE_CACHE = WP_CONTENT_DIR . '/cache';
+ if ( $base ) {
+ $this->BASE_CACHE = $base;
+ }
+ if ( $age ) {
+ $this->MAX_AGE = $age;
+ }
+
+ }
+
+/*=======================================================================*\
+ Function: set
+ Purpose: add an item to the cache, keyed on url
+ Input: url from wich the rss file was fetched
+ Output: true on sucess
+\*=======================================================================*/
+ function set ($url, $rss) {
+ global $wpdb;
+ $cache_option = 'rss_' . $this->file_name( $url );
+
+ set_transient($cache_option, $rss, $this->MAX_AGE);
+
+ return $cache_option;
+ }
+
+/*=======================================================================*\
+ Function: get
+ Purpose: fetch an item from the cache
+ Input: url from wich the rss file was fetched
+ Output: cached object on HIT, false on MISS
+\*=======================================================================*/
+ function get ($url) {
+ $this->ERROR = "";
+ $cache_option = 'rss_' . $this->file_name( $url );
+
+ if ( ! $rss = get_transient( $cache_option ) ) {
+ $this->debug(
+ "Cache doesn't contain: $url (cache option: $cache_option)"
+ );
+ return 0;
+ }
+
+ return $rss;
+ }
+
+/*=======================================================================*\
+ Function: check_cache
+ Purpose: check a url for membership in the cache
+ and whether the object is older then MAX_AGE (ie. STALE)
+ Input: url from wich the rss file was fetched
+ Output: cached object on HIT, false on MISS
+\*=======================================================================*/
+ function check_cache ( $url ) {
+ $this->ERROR = "";
+ $cache_option = 'rss_' . $this->file_name( $url );
+
+ if ( get_transient($cache_option) ) {
+ // object exists and is current
+ return 'HIT';
+ } else {
+ // object does not exist
+ return 'MISS';
+ }
+ }
+
+/*=======================================================================*\
+ Function: serialize
+\*=======================================================================*/
+ function serialize ( $rss ) {
+ return serialize( $rss );
+ }
+
+/*=======================================================================*\
+ Function: unserialize
+\*=======================================================================*/
+ function unserialize ( $data ) {
+ return unserialize( $data );
+ }
+
+/*=======================================================================*\
+ Function: file_name
+ Purpose: map url to location in cache
+ Input: url from wich the rss file was fetched
+ Output: a file name
+\*=======================================================================*/
+ function file_name ($url) {
+ return md5( $url );
+ }
+
+/*=======================================================================*\
+ Function: error
+ Purpose: register error
+\*=======================================================================*/
+ function error ($errormsg, $lvl=E_USER_WARNING) {
+ // append PHP's error message if track_errors enabled
+ if ( isset($php_errormsg) ) {
+ $errormsg .= " ($php_errormsg)";
+ }
+ $this->ERROR = $errormsg;
+ if ( MAGPIE_DEBUG ) {
+ trigger_error( $errormsg, $lvl);
+ }
+ else {
+ error_log( $errormsg, 0);
+ }
+ }
+ function debug ($debugmsg, $lvl=E_USER_NOTICE) {
+ if ( MAGPIE_DEBUG ) {
+ $this->error("MagpieRSS [debug] $debugmsg", $lvl);
+ }
+ }
+}
+
+if ( !function_exists('parse_w3cdtf') ) :
+function parse_w3cdtf ( $date_str ) {
+
+ # regex to match wc3dtf
+ $pat = "/(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2})(:(\d{2}))?(?:([-+])(\d{2}):?(\d{2})|(Z))?/";
+
+ if ( preg_match( $pat, $date_str, $match ) ) {
+ list( $year, $month, $day, $hours, $minutes, $seconds) =
+ array( $match[1], $match[2], $match[3], $match[4], $match[5], $match[7]);
+
+ # calc epoch for current date assuming GMT
+ $epoch = gmmktime( $hours, $minutes, $seconds, $month, $day, $year);
+
+ $offset = 0;
+ if ( $match[11] == 'Z' ) {
+ # zulu time, aka GMT
+ }
+ else {
+ list( $tz_mod, $tz_hour, $tz_min ) =
+ array( $match[8], $match[9], $match[10]);
+
+ # zero out the variables
+ if ( ! $tz_hour ) { $tz_hour = 0; }
+ if ( ! $tz_min ) { $tz_min = 0; }
+
+ $offset_secs = (($tz_hour*60)+$tz_min)*60;
+
+ # is timezone ahead of GMT? then subtract offset
+ #
+ if ( $tz_mod == '+' ) {
+ $offset_secs = $offset_secs * -1;
+ }
+
+ $offset = $offset_secs;
+ }
+ $epoch = $epoch + $offset;
+ return $epoch;
+ }
+ else {
+ return -1;
+ }
+}
+endif;
+
+if ( !function_exists('wp_rss') ) :
+/**
+ * Display all RSS items in a HTML ordered list.
+ *
+ * @since unknown
+ * @package External
+ * @subpackage MagpieRSS
+ *
+ * @param string $url URL of feed to display. Will not auto sense feed URL.
+ * @param int $num_items Optional. Number of items to display, default is all.
+ */
+function wp_rss( $url, $num_items = -1 ) {
+ if ( $rss = fetch_rss( $url ) ) {
+ echo '<ul>';
+
+ if ( $num_items !== -1 ) {
+ $rss->items = array_slice( $rss->items, 0, $num_items );
+ }
+
+ foreach ( (array) $rss->items as $item ) {
+ printf(
+ '<li><a href="%1$s" title="%2$s">%3$s</a></li>',
+ esc_url( $item['link'] ),
+ esc_attr( strip_tags( $item['description'] ) ),
+ htmlentities( $item['title'] )
+ );
+ }
+
+ echo '</ul>';
+ } else {
+ _e( 'An error has occurred, which probably means the feed is down. Try again later.' );
+ }
+}
+endif;
+
+if ( !function_exists('get_rss') ) :
+/**
+ * Display RSS items in HTML list items.
+ *
+ * You have to specify which HTML list you want, either ordered or unordered
+ * before using the function. You also have to specify how many items you wish
+ * to display. You can't display all of them like you can with wp_rss()
+ * function.
+ *
+ * @since unknown
+ * @package External
+ * @subpackage MagpieRSS
+ *
+ * @param string $url URL of feed to display. Will not auto sense feed URL.
+ * @param int $num_items Optional. Number of items to display, default is all.
+ * @return bool False on failure.
+ */
+function get_rss ($url, $num_items = 5) { // Like get posts, but for RSS
+ $rss = fetch_rss($url);
+ if ( $rss ) {
+ $rss->items = array_slice($rss->items, 0, $num_items);
+ foreach ( (array) $rss->items as $item ) {
+ echo "<li>\n";
+ echo "<a href='$item[link]' title='$item[description]'>";
+ echo htmlentities($item['title']);
+ echo "</a><br />\n";
+ echo "</li>\n";
+ }
+ } else {
+ return false;
+ }
+}
+endif;
+
+?>