+<script type="text/javascript">
+/* <![CDATA[ */
+ jQuery(document).ready(function($){
+ $.get("<?php echo admin_url( 'admin-ajax.php?action=oembed-cache&post=' . $post_ID ); ?>");
+ });
+/* ]]> */
+</script>
+<?php
+ }
+
+ /**
+ * Register an embed handler. Do not use this function directly, use {@link wp_embed_register_handler()} instead.
+ * This function should probably also only be used for sites that do not support oEmbed.
+ *
+ * @param string $id An internal ID/name for the handler. Needs to be unique.
+ * @param string $regex The regex that will be used to see if this handler should be used for a URL.
+ * @param callback $callback The callback function that will be called if the regex is matched.
+ * @param int $priority Optional. Used to specify the order in which the registered handlers will be tested (default: 10). Lower numbers correspond with earlier testing, and handlers with the same priority are tested in the order in which they were added to the action.
+ */
+ function register_handler( $id, $regex, $callback, $priority = 10 ) {
+ $this->handlers[$priority][$id] = array(
+ 'regex' => $regex,
+ 'callback' => $callback,
+ );
+ }
+
+ /**
+ * Unregister a previously registered embed handler. Do not use this function directly, use {@link wp_embed_unregister_handler()} instead.
+ *
+ * @param string $id The handler ID that should be removed.
+ * @param int $priority Optional. The priority of the handler to be removed (default: 10).
+ */
+ function unregister_handler( $id, $priority = 10 ) {
+ if ( isset($this->handlers[$priority][$id]) )
+ unset($this->handlers[$priority][$id]);
+ }
+
+ /**
+ * 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 WP_oEmbed} class.
+ *
+ * @uses wp_oembed_get()
+ * @uses wp_parse_args()
+ * @uses wp_embed_defaults()
+ * @uses WP_Embed::maybe_make_link()
+ * @uses get_option()
+ * @uses current_user_can()
+ * @uses wp_cache_get()
+ * @uses wp_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 = wp_parse_args( $attr, wp_embed_defaults() );
+
+ // kses converts & into & and we need to undo this
+ // See http://core.trac.wordpress.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 WP_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 = wp_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 );
+ }
+
+ /**
+ * Delete all oEmbed caches.
+ *
+ * @param int $post_ID Post ID to delete the caches for.
+ */
+ function delete_oembed_caches( $post_ID ) {
+ $post_metas = get_post_custom_keys( $post_ID );
+ if ( empty($post_metas) )
+ return;
+
+ foreach( $post_metas as $post_meta_key ) {
+ if ( '_oembed_' == substr( $post_meta_key, 0, 8 ) )
+ delete_post_meta( $post_ID, $post_meta_key );
+ }
+ }
+
+ /**
+ * Triggers a caching of all oEmbed results.
+ *
+ * @param int $post_ID Post ID to do the caching for.
+ */
+ function cache_oembed( $post_ID ) {
+ $post = get_post( $post_ID );
+
+ if ( empty($post->ID) || !in_array( $post->post_type, apply_filters( 'embed_cache_oembed_types', array( 'post', 'page' ) ) ) )
+ return;
+
+ // Trigger a caching
+ if ( !empty($post->post_content) ) {
+ $this->post_ID = $post->ID;
+ $this->usecache = false;
+
+ $content = $this->run_shortcode( $post->post_content );
+ if ( get_option('embed_autourls') )
+ $this->autoembed( $content );
+
+ $this->usecache = true;
+ }
+ }
+
+ /**
+ * Passes any unlinked URLs that are on their own line to {@link WP_Embed::shortcode()} for potential embedding.
+ *
+ * @uses WP_Embed::autoembed_callback()
+ *
+ * @param string $content The content to be searched.
+ * @return string Potentially modified $content.
+ */
+ function autoembed( $content ) {
+ return preg_replace_callback( '|^\s*(https?://[^\s"]+)\s*$|im', array(&$this, 'autoembed_callback'), $content );
+ }
+
+ /**
+ * Callback function for {@link WP_Embed::autoembed()}.
+ *
+ * @uses WP_Embed::shortcode()
+ *
+ * @param array $match A regex match array.
+ * @return string The embed HTML on success, otherwise the original URL.
+ */
+ function autoembed_callback( $match ) {
+ $oldval = $this->linkifunknown;
+ $this->linkifunknown = false;
+ $return = $this->shortcode( array(), $match[1] );
+ $this->linkifunknown = $oldval;
+
+ return "\n$return\n";
+ }
+
+ /**
+ * Conditionally makes a hyperlink based on an internal class variable.
+ *
+ * @param string $url URL to potentially be linked.
+ * @return string Linked URL or the original URL.
+ */
+ function maybe_make_link( $url ) {
+ $output = ( $this->linkifunknown ) ? '<a href="' . esc_attr($url) . '">' . esc_html($url) . '</a>' : $url;
+ return apply_filters( 'embed_maybe_make_link', $output, $url );
+ }
+}
+$GLOBALS['wp_embed'] = new WP_Embed();
+
+/**
+ * Register an embed handler. This function should probably only be used for sites that do not support oEmbed.
+ *
+ * @since 2.9.0
+ * @see WP_Embed::register_handler()
+ */
+function wp_embed_register_handler( $id, $regex, $callback, $priority = 10 ) {
+ global $wp_embed;
+ $wp_embed->register_handler( $id, $regex, $callback, $priority );
+}
+
+/**
+ * Unregister a previously registered embed handler.
+ *
+ * @since 2.9.0
+ * @see WP_Embed::unregister_handler()
+ */
+function wp_embed_unregister_handler( $id, $priority = 10 ) {
+ global $wp_embed;
+ $wp_embed->unregister_handler( $id, $priority );
+}
+
+/**
+ * Create default array of embed parameters.
+ *
+ * @since 2.9.0
+ *
+ * @return array Default embed parameters.
+ */
+function wp_embed_defaults() {
+ if ( !empty($GLOBALS['content_width']) )
+ $theme_width = (int) $GLOBALS['content_width'];
+
+ $width = get_option('embed_size_w');
+
+ if ( empty($width) && !empty($theme_width) )
+ $width = $theme_width;
+
+ if ( empty($width) )
+ $width = 500;
+
+ $height = get_option('embed_size_h');
+
+ if ( empty($height) )
+ $height = 700;
+
+ return apply_filters( 'embed_defaults', array(
+ 'width' => $width,
+ 'height' => $height,
+ ) );
+}
+
+/**
+ * Based on a supplied width/height example, return the biggest possible dimensions based on the max width/height.
+ *
+ * @since 2.9.0
+ * @uses wp_constrain_dimensions() This function passes the widths and the heights.
+ *
+ * @param int $example_width The width of an example embed.
+ * @param int $example_height The height of an example embed.
+ * @param int $max_width The maximum allowed width.
+ * @param int $max_height The maximum allowed height.
+ * @return array The maximum possible width and height based on the example ratio.
+ */
+function wp_expand_dimensions( $example_width, $example_height, $max_width, $max_height ) {
+ $example_width = (int) $example_width;
+ $example_height = (int) $example_height;
+ $max_width = (int) $max_width;
+ $max_height = (int) $max_height;
+
+ return wp_constrain_dimensions( $example_width * 1000000, $example_height * 1000000, $max_width, $max_height );
+}
+
+/**
+ * Attempts to fetch the embed HTML for a provided URL using oEmbed.
+ *
+ * @since 2.9.0
+ * @see WP_oEmbed
+ *
+ * @uses _wp_oembed_get_object()
+ * @uses WP_oEmbed::get_html()
+ *
+ * @param string $url The URL that should be embedded.
+ * @param array $args Additional arguments and parameters.
+ * @return string The original URL on failure or the embed HTML on success.
+ */
+function wp_oembed_get( $url, $args = '' ) {
+ require_once( ABSPATH . WPINC . '/class-oembed.php' );
+ $oembed = _wp_oembed_get_object();
+ return $oembed->get_html( $url, $args );
+}
+
+/**
+ * Adds a URL format and oEmbed provider URL pair.
+ *
+ * @since 2.9.0
+ * @see WP_oEmbed
+ *
+ * @uses _wp_oembed_get_object()
+ *
+ * @param string $format The format of URL that this provider can handle. You can use asterisks as wildcards.
+ * @param string $provider The URL to the oEmbed provider.
+ * @param boolean $regex Whether the $format parameter is in a regex format.
+ */
+function wp_oembed_add_provider( $format, $provider, $regex = false ) {
+ require_once( ABSPATH . WPINC . '/class-oembed.php' );
+ $oembed = _wp_oembed_get_object();
+ $oembed->providers[$format] = array( $provider, $regex );
+}
+
+/**
+ * Determines if default embed handlers should be loaded.
+ *
+ * Checks to make sure that the embeds library hasn't already been loaded. If
+ * it hasn't, then it will load the embeds library.
+ *
+ * @since 2.9.0
+ */
+function wp_maybe_load_embeds() {
+ if ( ! apply_filters( 'load_default_embeds', true ) )
+ return;
+ wp_embed_register_handler( 'googlevideo', '#http://video\.google\.([A-Za-z.]{2,5})/videoplay\?docid=([\d-]+)(.*?)#i', 'wp_embed_handler_googlevideo' );
+}
+
+/**
+ * The Google Video embed handler callback. Google Video does not support oEmbed.
+ *
+ * @see WP_Embed::register_handler()
+ * @see WP_Embed::shortcode()
+ *
+ * @param array $matches The regex matches from the provided regex when calling {@link wp_embed_register_handler()}.
+ * @param array $attr Embed attributes.
+ * @param string $url The original URL that was matched by the regex.
+ * @param array $rawattr The original unmodified attributes.
+ * @return string The embed HTML.
+ */
+function wp_embed_handler_googlevideo( $matches, $attr, $url, $rawattr ) {
+ // If the user supplied a fixed width AND height, use it
+ if ( !empty($rawattr['width']) && !empty($rawattr['height']) ) {
+ $width = (int) $rawattr['width'];
+ $height = (int) $rawattr['height'];
+ } else {
+ list( $width, $height ) = wp_expand_dimensions( 425, 344, $attr['width'], $attr['height'] );
+ }
+
+ return apply_filters( 'embed_googlevideo', '<embed type="application/x-shockwave-flash" src="http://video.google.com/googleplayer.swf?docid=' . esc_attr($matches[2]) . '&hl=en&fs=true" style="width:' . esc_attr($width) . 'px;height:' . esc_attr($height) . 'px" allowFullScreen="true" allowScriptAccess="always" />', $matches, $attr, $url, $rawattr );
+}
+
+?>
\ No newline at end of file