/**
* Filters a single syndication URL.
*
* @param string $string A string that is expected to be a syndication URL.
* @return string|bool The filtered and escaped URL string, or FALSE if invalid.
* @used-by clean_urls
*/
public static function clean_url($string)
{
$url = trim($string);
if (!filter_var($url, FILTER_VALIDATE_URL)) {
return false;
}
// Rewrite these to https as needed
$secure = apply_filters('syn_rewrite_secure', array('facebook.com', 'twitter.com'));
if (in_array(extract_domain_name($url), $secure)) {
$url = preg_replace("/^http:/i", "https:", $url);
}
$url = esc_url_raw($url);
return $url;
}
/**
* Returns an array of domains with the post type terminologies
*
* @return array A translated post type string for specific domain or 'a post'
*/
public static function get_post_type_string($url)
{
$strings = array('twitter.com' => _x('a tweet', 'Post kind'), 'vimeo.com' => _x('a video', 'Post kind'), 'youtube.com' => _x('a video', 'Post kind'), 'instagram.com' => _x('an image', 'Post kind'));
$domain = extract_domain_name($url);
if (array_key_exists($domain, $strings)) {
return apply_filters('kind_post_type_string', $strings[$domain]);
} else {
return _x('a post', 'Post kind');
}
}
private static function mf2parse($content, $url)
{
$data = array();
$host = extract_domain_name($url);
switch ($host) {
case 'twitter.com':
$parsed = Mf2\Shim\parseTwitter($content, $url);
break;
default:
$parsed = Mf2\parse($content, $url);
}
if (mf2_cleaner::isMicroformatCollection($parsed)) {
$entries = mf2_cleaner::findMicroformatsByType($parsed, 'h-entry');
if ($entries) {
$entry = $entries[0];
if (mf2_cleaner::isMicroformat($entry)) {
foreach ($entry['properties'] as $key => $value) {
$data[$key] = mf2_cleaner::getPlaintext($entry, $key);
}
$data['published'] = mf2_cleaner::getPublished($entry);
$data['updated'] = mf2_cleaner::getUpdated($entry);
$data['name'] = mf2_cleaner::getPlaintext($entry, 'name');
$data['content'] = mf2_cleaner::getHtml($entry, 'content');
$data['summary'] = mf2_cleaner::getHtml($entry, 'summary');
$data['name'] = trim(preg_replace('/https?:\\/\\/([^ ]+|$)/', '', $data['name']));
$author = mf2_cleaner::getAuthor($entry);
if ($author) {
$data['author'] = array();
foreach ($author['properties'] as $key => $value) {
$data['author'][$key] = mf2_cleaner::getPlaintext($author, $key);
}
$data['author'] = array_filter($data['author']);
}
}
}
}
return array_filter($data);
}
