$title ) {
if ( preg_match( '/\b' . preg_quote( $format, '/' ) . '\b/i', $feed_details['url'] ) ) {
$feed_details['post-format'] = $format;
break;
}
}
return $feed_details;
}
/**
* Discover the feeds available at the URL specified.
*
* @param string $content The content for the URL is already provided here.
* @param string $url The url to search.
*
* @return array A list of supported feeds at the URL.
*/
public function discover_available_feeds( $content, $url ) {
$discovered_feeds = array();
$mf = Mf2\parse( $content, $url );
if ( isset( $mf['rel-urls'] ) ) {
foreach ( $mf['rel-urls'] as $feed_url => $link ) {
foreach ( array( 'me', 'alternate' ) as $rel ) {
if ( in_array( $rel, $link['rels'] ) ) {
$discovered_feeds[ $feed_url ] = array(
'rel' => $rel,
);
}
}
if ( ! isset( $discovered_feeds[ $feed_url ] ) ) {
continue;
}
if ( isset( $link['type'] ) ) {
$discovered_feeds[ $feed_url ]['type'] = $link['type'];
}
if ( isset( $link['title'] ) ) {
$discovered_feeds[ $feed_url ]['title'] = $link['title'];
} elseif ( isset( $link['text'] ) ) {
$discovered_feeds[ $feed_url ]['title'] = $link['text'];
}
}
}
if ( isset( $mf['items'] ) ) {
$feed_items = $this->parse_hfeed( $mf );
if ( count( $feed_items ) > 0 ) {
$discovered_feeds[ $url ] = array(
'type' => 'text/html',
'rel' => 'self',
'post-format' => 'autodetect',
'parser' => 'microformats',
);
}
}
return $discovered_feeds;
}
/**
* Parse an h-card.
*
* @param array $data The data.
* @param bool $category It is a category.
*
* @return string The discovered value.
*/
private function parse_hcard( $data, $category = false ) {
$name = '';
$link = '';
// Check if h-card is set and pass that information on in the link.
if ( isset( $data['type'] ) && in_array( 'h-card', $data['type'] ) ) {
if ( isset( $data['properties']['name'][0] ) ) {
$name = $data['properties']['name'][0];
}
if ( isset( $data['properties']['url'][0] ) ) {
$link = $data['properties']['url'][0];
if ( '' === $name ) {
$name = $link;
} else {
// can't have commas in categories.
$name = str_replace( ',', '', $name );
}
$person_tag = $category ? '' : '';
return '' . $person_tag . $name . '';
}
}
return isset( $data['value'] ) ? $data['value'] : '';
}
/**
* Parse an h-feed.
*
* @param array $mf The microfeeds2 parser response.
*
* @return array An array of feed items.
*/
public function parse_hfeed( $mf ) {
if ( ! is_array( $mf ) ) {
return array();
}
$feed_items = array();
$entries = array();
// The following section is adapted from the SimplePie source.
// 2020-11-30: Modifications: set post format, handle videos.
// This should implement the https://www.w3.org/TR/post-type-discovery/ algorithm.
$feed_author = null;
$h_feed = array();
foreach ( $mf['items'] as $mf_item ) {
if ( in_array( 'h-feed', $mf_item['type'] ) ) {
$h_feed = $mf_item;
break;
}
// Also look for h-feed or h-entry in the children of each top level item.
if ( ! isset( $mf_item['children'][0]['type'] ) ) {
continue;
}
if ( in_array( 'h-feed', $mf_item['children'][0]['type'] ) ) {
$h_feed = $mf_item['children'][0];
// In this case the parent of the h-feed may be an h-card, so use it as
// the feed_author.
if ( in_array( 'h-card', $mf_item['type'] ) ) {
$feed_author = $mf_item;
}
break;
} elseif ( in_array( 'h-entry', $mf_item['children'][0]['type'] ) ) {
$entries = $mf_item['children'];
// In this case the parent of the h-entry list may be an h-card, so use
// it as the feed_author.
if ( in_array( 'h-card', $mf_item['type'] ) ) {
$feed_author = $mf_item;
}
break;
}
}
if ( isset( $h_feed['children'] ) ) {
$entries = $h_feed['children'];
} elseif ( empty( $entries ) ) {
$entries = $mf['items'];
}
foreach ( $entries as $entry ) {
if ( isset( $entry['properties']['deleted'][0] ) || ! isset( $entry['properties']['published'][0] ) ) {
continue;
}
$item = new Feed_Item();
$item->date = $entry['properties']['published'][0];
$item->author = $feed_author;
if ( isset( $entry['properties']['url'][0] ) ) {
$link = $entry['properties']['url'][0];
if ( isset( $link['value'] ) ) {
$link = $link['value'];
}
$item->permalink = $link;
}
if ( isset( $entry['properties']['uid'][0] ) ) {
$guid = $entry['properties']['uid'][0];
if ( isset( $guid['value'] ) ) {
$guid = $guid['value'];
}
$item->permalink = $guid;
}
if ( isset( $entry['properties']['name'][0] ) ) {
$title = $entry['properties']['name'][0];
if ( isset( $title['value'] ) ) {
$title = $title['value'];
}
$item->title = $title;
}
$content = '';
foreach ( array( 'photo', 'video' ) as $media ) {
if ( ! isset( $entry['properties'][ $media ][0] ) ) {
continue;
}
// If a $media is also in content, don't need to add it again here.
if ( isset( $entry['properties']['content'][0]['html'] ) ) {
$content = $entry['properties']['content'][0]['html'];
}
$el_list = array();
for ( $j = 0; $j < count( $entry['properties'][ $media ] ); $j++ ) {
$el = $entry['properties'][ $media ][ $j ];
if ( ! empty( $el ) && strpos( $content, $el ) === false ) {
$el_list[] = $el;
}
}
if ( count( $el_list ) > 0 ) {
$set_id = preg_replace( '/[[:^alnum:]]/', '', $el_list[0] );
$content = '';
foreach ( $el_list as $j => $el ) {
$hidden = 0 === $j ? '' : 'class="hidden" ';
$content .= '';
switch ( $media ) {
case 'photo':
$content .= ' . ')
';
break;
case 'video':
$content .= '';
break;
}
$content .= '';
}
$content .= '
';
switch ( $media ) {
case 'photo':
// translators: %s is the number of photos.
$content .= sprintf( _n( '%d photo', '%d photos', count( $el_list ), 'friends' ), count( $el_list ) );
break;
case 'video':
// translators: %s is the number of videos.
$content .= sprintf( _n( '%d video', '%d videos', count( $el_list ), 'friends' ), count( $el_list ) );
break;
}
$content .= '
';
}
$item->format = $media;
}
if ( isset( $entry['properties']['content'][0]['html'] ) ) {
$content .= $entry['properties']['content'][0]['html'];
if ( isset( $entry['properties']['in-reply-to'][0] ) ) {
$in_reply_to = '';
if ( is_string( $entry['properties']['in-reply-to'][0] ) ) {
$in_reply_to = $entry['properties']['in-reply-to'][0];
} elseif ( isset( $entry['properties']['in-reply-to'][0]['value'] ) ) {
$in_reply_to = $entry['properties']['in-reply-to'][0]['value'];
}
if ( '' !== $in_reply_to ) {
$content .= ' ' .
'' . $in_reply_to . '
';
}
}
$item->content = $content;
}
if ( isset( $entry['properties']['category'] ) ) {
$category_csv = '';
// Categories can also contain h-cards.
foreach ( $entry['properties']['category'] as $category ) {
if ( '' !== $category_csv ) {
$category_csv .= ', ';
}
if ( is_string( $category ) ) {
// Can't have commas in categories.
$category_csv .= str_replace( ',', '', $category );
} else {
$category_csv .= $this->parse_hcard( $category, true );
}
}
$item->category = $category_csv;
}
if ( ! $item->post_format && in_array( 'h-as-note', $entry['type'] ) ) {
$item->post_format = 'status';
$item->title = '';
}
$feed_items[] = $item;
}
return $feed_items;
}
/**
* Fetches a feed and returns the processed items.
*
* @param string $url The url.
* @param User_Feed $user_feed The user feed.
*
* @return array An array of feed items.
*/
public function fetch_feed( $url, User_Feed $user_feed = null ) {
$mf = Mf2\fetch( $url );
if ( ! $mf ) {
// translators: %s is a URL.
return new \WP_Error( 'microformats Parser', sprintf( __( 'Could not parse %s.', 'friends' ), $url ) );
}
return $this->parse_hfeed( $mf );
}
}