/**
* The {@link do_shortcode()} callback function.
*
* Attempts to convert a URL into embed HTML. Starts by checking the URL against the regex of the registered embed handlers.
* Next, checks the URL against the regex of registered {@link nxt_oEmbed} providers if oEmbed discovery is false.
* If none of the regex matches and it's enabled, then the URL will be passed to {@link BP_Embed::parse_oembed()} for oEmbed parsing.
*
* @uses nxt_parse_args()
* @uses nxt_embed_defaults()
* @uses current_user_can()
* @uses _nxt_oembed_get_object()
* @uses nxt_Embed::maybe_make_link()
*
* @param array $attr Shortcode attributes.
* @param string $url The URL attempting to be embeded.
* @return string The embed HTML on success, otherwise the original URL.
*/
function shortcode($attr, $url = '')
{
if (empty($url)) {
return '';
}
$rawattr = $attr;
$attr = nxt_parse_args($attr, nxt_embed_defaults());
// kses converts & into & and we need to undo this
// See http://core.trac.nxtclass.org/ticket/11311
$url = str_replace('&', '&', $url);
// Look for known internal handlers
ksort($this->handlers);
foreach ($this->handlers as $priority => $handlers) {
foreach ($handlers as $hid => $handler) {
if (preg_match($handler['regex'], $url, $matches) && is_callable($handler['callback'])) {
if (false !== ($return = call_user_func($handler['callback'], $matches, $attr, $url, $rawattr))) {
return apply_filters('embed_handler_html', $return, $url, $attr);
}
}
}
}
// Get object ID
$id = apply_filters('embed_post_id', 0);
// Is oEmbed discovery on?
$attr['discover'] = apply_filters('bp_embed_oembed_discover', false) && current_user_can('unfiltered_html');
// Set up a new nxt oEmbed object to check URL with registered oEmbed providers
require_once ABSPATH . nxtINC . '/class-oembed.php';
$oembed_obj = _nxt_oembed_get_object();
// If oEmbed discovery is true, skip oEmbed provider check
$is_oembed_link = false;
if (!$attr['discover']) {
foreach ((array) $oembed_obj->providers as $provider_matchmask => $provider) {
$regex = ($is_regex = $provider[1]) ? $provider_matchmask : '#' . str_replace('___wildcard___', '(.+)', preg_quote(str_replace('*', '___wildcard___', $provider_matchmask), '#')) . '#i';
if (preg_match($regex, $url)) {
$is_oembed_link = true;
}
}
// If url doesn't match a nxt oEmbed provider, stop parsing
if (!$is_oembed_link) {
return $this->maybe_make_link($url);
}
}
return $this->parse_oembed($id, $url, $attr, $rawattr);
}
/**
* The {@link do_shortcode()} callback function.
*
* Attempts to convert a URL into embed HTML. Starts by checking the URL against the regex of the registered embed handlers.
* If none of the regex matches and it's enabled, then the URL will be given to the {@link nxt_oEmbed} class.
*
* @uses nxt_oembed_get()
* @uses nxt_parse_args()
* @uses nxt_embed_defaults()
* @uses nxt_Embed::maybe_make_link()
* @uses get_option()
* @uses current_user_can()
* @uses nxt_cache_get()
* @uses nxt_cache_set()
* @uses get_post_meta()
* @uses update_post_meta()
*
* @param array $attr Shortcode attributes.
* @param string $url The URL attempting to be embedded.
* @return string The embed HTML on success, otherwise the original URL.
*/
function shortcode($attr, $url = '')
{
global $post;
if (empty($url)) {
return '';
}
$rawattr = $attr;
$attr = nxt_parse_args($attr, nxt_embed_defaults());
// kses converts & into & and we need to undo this
// See http://core.trac.nxtclass.org/ticket/11311
$url = str_replace('&', '&', $url);
// Look for known internal handlers
ksort($this->handlers);
foreach ($this->handlers as $priority => $handlers) {
foreach ($handlers as $id => $handler) {
if (preg_match($handler['regex'], $url, $matches) && is_callable($handler['callback'])) {
if (false !== ($return = call_user_func($handler['callback'], $matches, $attr, $url, $rawattr))) {
return apply_filters('embed_handler_html', $return, $url, $attr);
}
}
}
}
$post_ID = !empty($post->ID) ? $post->ID : null;
if (!empty($this->post_ID)) {
// Potentially set by nxt_Embed::cache_oembed()
$post_ID = $this->post_ID;
}
// Unknown URL format. Let oEmbed have a go.
if ($post_ID) {
// Check for a cached result (stored in the post meta)
$cachekey = '_oembed_' . md5($url . serialize($attr));
if ($this->usecache) {
$cache = get_post_meta($post_ID, $cachekey, true);
// Failures are cached
if ('{{unknown}}' === $cache) {
return $this->maybe_make_link($url);
}
if (!empty($cache)) {
return apply_filters('embed_oembed_html', $cache, $url, $attr, $post_ID);
}
}
// Use oEmbed to get the HTML
$attr['discover'] = apply_filters('embed_oembed_discover', false) && author_can($post_ID, 'unfiltered_html');
$html = nxt_oembed_get($url, $attr);
// Cache the result
$cache = $html ? $html : '{{unknown}}';
update_post_meta($post_ID, $cachekey, $cache);
// If there was a result, return it
if ($html) {
return apply_filters('embed_oembed_html', $html, $url, $attr, $post_ID);
}
}
// Still unknown
return $this->maybe_make_link($url);
}
/**
* Connects to a oEmbed provider and returns the result.
*
* @param string $provider The URL to the oEmbed provider.
* @param string $url The URL to the content that is desired to be embedded.
* @param array $args Optional arguments. Usually passed from a shortcode.
* @return bool|object False on failure, otherwise the result in the form of an object.
*/
function fetch($provider, $url, $args = '')
{
$args = nxt_parse_args($args, nxt_embed_defaults());
$provider = add_query_arg('maxwidth', (int) $args['width'], $provider);
$provider = add_query_arg('maxheight', (int) $args['height'], $provider);
$provider = add_query_arg('url', urlencode($url), $provider);
foreach (array('json', 'xml') as $format) {
$result = $this->_fetch_with_format($provider, $format);
if (is_nxt_error($result) && 'not-implemented' == $result->get_error_code()) {
continue;
}
return $result && !is_nxt_error($result) ? $result : false;
}
return false;
}
