/**
 * Used during {@link BP_Embed::parse_oembed()} via {@link bp_forums_embed()}.
 *
 * Wrapper function for {@link bb_get_postmeta()}.
 *
 * @package BuddyPress_Forums
 * @since BuddyPress (1.5.0)
 */
function bp_embed_forum_cache($cache, $id, $cachekey)
{
    return bb_get_postmeta($id, $cachekey);
}
function ray_bp_oembed($content)
{
    global $bp_oembed;
    // WP(MU) 2.9 oEmbed check
    if (!function_exists(wp_oembed_get)) {
        return $content;
    }
    // match URLs - could use some work
    //	preg_match_all( '@(https?://([-\w\.]+)+(:\d+)?(/([\w/_\.]*(\?\S+)?)?)?)@', $content, $matches );
    preg_match_all('`.*?((http|https)://[\\w#$&+,\\/:;=?@.-]+)[^\\w#$&+,\\/:;=?@.-]*?`i', $content, $matches);
    // debug regex
    // print_r($matches[0]);
    // if there are no links to parse, return $content now!
    if (empty($matches[0])) {
        return $content;
    }
    $whitelist = $bp_oembed['whitelist'];
    for ($i = 0; $i < count($matches[0]); $i++) {
        $url = $matches[0][$i];
        // check url with whitelist, if url matches any whitelist item, skip from parsing
        foreach ($whitelist as $whitelist_item) {
            if (strpos($url, $whitelist_item) !== false) {
                continue 2;
            }
        }
        $cachekey = '_oembed_' . md5($url);
        // grab oEmbed cache depending on BP component
        // not pretty! only looking for activity updates or forum posts ATM
        if (!bp_get_activity_id() && bp_forums_is_installed_correctly()) {
            $cache = bb_get_postmeta(bp_get_the_topic_post_id(), $cachekey);
        } else {
            $cache = bp_activity_get_meta(bp_get_activity_id(), $cachekey);
        }
        // cache check - no oEmbed, but cached result, skip rest of loop
        if ($url === $cache) {
            continue;
        }
        // cache check - yes oEmbed
        if (!empty($cache)) {
            $replace = apply_filters('embed_oembed_html', $cache, $url, $attr);
        } else {
            // process url to oEmbed
            $oembed = wp_oembed_get($url);
            // returns true if link is oEmbed
            //$oembed = file_get_contents("http://autoembed.com/api/?url=".urlencode($url));
            if ($oembed) {
                $replace = apply_filters('embed_oembed_html', $oembed, $url, $attr);
                $replace = str_replace('
', '', $replace);
                // fix Viddler line break in <object> tag
            } else {
                $replace = $url;
                // unlike WP's oEmbed, I cache the URL if not oEmbed-dable!
                // the URL is more useful in the DB than a string called {{unknown}} ;)
            }
            // save oEmbed cache depending on BP component
            // the same "not prettiness!"
            if (!bp_get_activity_id() && bp_forums_is_installed_correctly()) {
                bb_update_postmeta(bp_get_the_topic_post_id(), $cachekey, $replace);
            } else {
                bp_activity_update_meta(bp_get_activity_id(), $cachekey, $replace);
            }
        }
        $content = str_replace($url, $replace, $content);
    }
    return $content;
}