WordPress/wp-includes/feed.php

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<?php
function get_bloginfo_rss($show = '') {
$info = strip_tags(get_bloginfo($show));
return apply_filters('get_bloginfo_rss', convert_chars($info));
}
function bloginfo_rss($show = '') {
echo apply_filters('bloginfo_rss', get_bloginfo_rss($show));
}
function get_wp_title_rss($sep = '&#187;') {
$title = wp_title($sep, false);
if ( is_wp_error( $title ) )
return $title->get_error_message();
$title = apply_filters('get_wp_title_rss', $title);
return $title;
}
function wp_title_rss($sep = '&#187;') {
echo apply_filters('wp_title_rss', get_wp_title_rss($sep));
}
function get_the_title_rss() {
$title = get_the_title();
$title = apply_filters('the_title_rss', $title);
return $title;
}
function the_title_rss() {
echo get_the_title_rss();
}
function the_content_rss($more_link_text='(more...)', $stripteaser=0, $more_file='', $cut = 0, $encode_html = 0) {
$content = get_the_content($more_link_text, $stripteaser, $more_file);
$content = apply_filters('the_content_rss', $content);
if ( $cut && !$encode_html )
$encode_html = 2;
if ( 1== $encode_html ) {
$content = wp_specialchars($content);
$cut = 0;
} elseif ( 0 == $encode_html ) {
$content = make_url_footnote($content);
} elseif ( 2 == $encode_html ) {
$content = strip_tags($content);
}
if ( $cut ) {
$blah = explode(' ', $content);
if ( count($blah) > $cut ) {
$k = $cut;
$use_dotdotdot = 1;
} else {
$k = count($blah);
$use_dotdotdot = 0;
}
for ( $i=0; $i<$k; $i++ )
$excerpt .= $blah[$i].' ';
$excerpt .= ($use_dotdotdot) ? '...' : '';
$content = $excerpt;
}
$content = str_replace(']]>', ']]&gt;', $content);
echo $content;
}
function the_excerpt_rss() {
$output = get_the_excerpt();
echo apply_filters('the_excerpt_rss', $output);
}
function the_permalink_rss() {
echo apply_filters('the_permalink_rss', get_permalink());
}
function comment_link() {
echo get_comment_link();
}
function get_comment_author_rss() {
return apply_filters('comment_author_rss', get_comment_author() );
}
function comment_author_rss() {
echo get_comment_author_rss();
}
function comment_text_rss() {
$comment_text = get_comment_text();
$comment_text = apply_filters('comment_text_rss', $comment_text);
echo $comment_text;
}
function comments_rss_link($link_text = 'Comments RSS', $commentsrssfilename = 'nolongerused') {
$url = get_post_comments_feed_link();
echo "<a href='$url'>$link_text</a>";
}
function comments_rss($commentsrssfilename = 'nolongerused') {
return get_post_comments_feed_link();
}
function get_author_rss_link($echo = false, $author_id, $author_nicename) {
$auth_ID = (int) $author_id;
$permalink_structure = get_option('permalink_structure');
if ( '' == $permalink_structure ) {
$link = get_option('home') . '?feed=rss2&amp;author=' . $author_id;
} else {
$link = get_author_posts_url($author_id, $author_nicename);
$link = trailingslashit($link) . user_trailingslashit('feed', 'feed');
}
$link = apply_filters('author_feed_link', $link);
if ( $echo )
echo $link;
return $link;
}
/** get_category_feed_link() - Get the feed link for a given category
*
* Returns a link to the feed for all post in a given category. A specific feed can be requested
* or left blank to get the default feed.
*
* @package WordPress
* @subpackage Feed
* @since 2.4
*
* @param int $cat_id ID of a category
* @param string $feed Feed type
* @return string Link to the feed for the category specified by $cat_id
*/
function get_category_feed_link($cat_id, $feed = 'rss2') {
$cat_id = (int) $cat_id;
$category = get_category($cat_id);
if ( empty($category) || is_wp_error($category) )
return false;
$permalink_structure = get_option('permalink_structure');
if ( '' == $permalink_structure ) {
$link = get_option('home') . "?feed=$feed&amp;cat=" . $cat_id;
} else {
$link = get_category_link($cat_id);
if( 'rss2' == $feed )
$feed_link = 'feed';
else
$feed_link = "feed/$feed";
$link = trailingslashit($link) . user_trailingslashit($feed_link, 'feed');
}
$link = apply_filters('category_feed_link', $link, $feed);
return $link;
}
function get_category_rss_link($echo = false, $cat_ID, $category_nicename) {
$link = get_category_feed_link($cat_ID, $feed = 'rss2');
if ( $echo )
echo $link;
return $link;
}
function get_the_category_rss($type = 'rss') {
$categories = get_the_category();
$tags = get_the_tags();
$home = get_bloginfo_rss('home');
$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 )
$the_list .= "\n\t\t<dc:subject><![CDATA[$cat_name]]></dc:subject>\n";
elseif ( 'atom' == $type )
$the_list .= sprintf( '<category scheme="%1$s" term="%2$s" />', attribute_escape( apply_filters( 'get_bloginfo_rss', get_bloginfo( 'url' ) ) ), attribute_escape( $cat_name ) );
else
$the_list .= "\n\t\t<category><![CDATA[$cat_name]]></category>\n";
}
return apply_filters('the_category_rss', $the_list, $type);
}
function the_category_rss($type = 'rss') {
echo get_the_category_rss($type);
}
function get_tag_feed_link($tag_id, $feed = 'rss2') {
$tag_id = (int) $tag_id;
$tag = get_tag($tag_id);
if ( empty($tag) || is_wp_error($tag) )
return false;
$permalink_structure = get_option('permalink_structure');
if ( '' == $permalink_structure ) {
$link = get_option('home') . "?feed=$feed&amp;tag=" . $tag->slug;
} else {
$link = get_tag_link($tag->term_id);
if ( 'rss2' == $feed )
$feed_link = 'feed';
else
$feed_link = "feed/$feed";
$link = $link . user_trailingslashit($feed_link, 'feed');
}
$link = apply_filters('tag_feed_link', $link, $feed);
return $link;
}
function html_type_rss() {
$type = get_bloginfo('html_type');
if (strpos($type, 'xhtml') !== false)
$type = 'xhtml';
else
$type = 'html';
echo $type;
}
function rss_enclosure() {
global $id, $post;
if ( !empty($post->post_password) && ($_COOKIE['wp-postpass_'.COOKIEHASH] != $post->post_password) )
return;
foreach (get_post_custom() as $key => $val) {
if ($key == 'enclosure') {
foreach ((array)$val as $enc) {
$enclosure = split("\n", $enc);
echo apply_filters('rss_enclosure', '<enclosure url="' . trim(htmlspecialchars($enclosure[0])) . '" length="' . trim($enclosure[1]) . '" type="' . trim($enclosure[2]) . '" />' . "\n");
}
}
}
}
function atom_enclosure() {
global $id, $post;
if ( !empty($post->post_password) && ($_COOKIE['wp-postpass_'.COOKIEHASH] != $post->post_password) )
return;
foreach (get_post_custom() as $key => $val) {
if ($key == 'enclosure') {
foreach ((array)$val as $enc) {
$enclosure = split("\n", $enc);
echo apply_filters('atom_enclosure', '<link href="' . trim(htmlspecialchars($enclosure[0])) . '" rel="enclosure" length="' . trim($enclosure[1]) . '" type="' . trim($enclosure[2]) . '" />' . "\n");
}
}
}
}
/**
* prep_atom_text_construct() - determine if given string of data is
* type 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.
*
* @package WordPress
* @subpackage Feed
* @since 2.4
*
* @param string $data input string
* @return array $result array(type, value)
* @link http://www.atomenabled.org/developers/syndication/atom-format-spec.php#rfc.section.3.1
*/
function prep_atom_text_construct($data) {
if (strpos($data, '<') === false && strpos($data, '&') === false) {
return array('text', $data);
}
$parser = xml_parser_create();
xml_parse($parser, '<div>' . $data . '</div>', true);
$code = xml_get_error_code($parser);
xml_parser_free($parser);
if (!$code) {
if (strpos($data, '<') === false) {
return array('text', $data);
} else {
$data = "<div xmlns='http://www.w3.org/1999/xhtml'>$data</div>";
return array('xhtml', $data);
}
}
if (strpos($data, ']]>') == false) {
return array('html', "<![CDATA[$data]]>");
} else {
return array('html', htmlspecialchars($data));
}
}
?>