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/wp-includes/ -> embed.php (source)

   1  <?php
   2  /**
   3   * oEmbed API: Top-level oEmbed functionality
   4   *
   5   * @package WordPress
   6   * @subpackage oEmbed
   7   * @since 4.4.0
   8   */
   9  
  10  /**
  11   * Registers an embed handler.
  12   *
  13   * Should probably only be used for sites that do not support oEmbed.
  14   *
  15   * @since 2.9.0
  16   *
  17   * @global WP_Embed $wp_embed
  18   *
  19   * @param string   $id       An internal ID/name for the handler. Needs to be unique.
  20   * @param string   $regex    The regex that will be used to see if this handler should be used for a URL.
  21   * @param callable $callback The callback function that will be called if the regex is matched.
  22   * @param int      $priority Optional. Used to specify the order in which the registered handlers will
  23   *                           be tested. Default 10.
  24   */
  25  function wp_embed_register_handler( $id, $regex, $callback, $priority = 10 ) {
  26      global $wp_embed;
  27      $wp_embed->register_handler( $id, $regex, $callback, $priority );
  28  }
  29  
  30  /**
  31   * Unregisters a previously-registered embed handler.
  32   *
  33   * @since 2.9.0
  34   *
  35   * @global WP_Embed $wp_embed
  36   *
  37   * @param string $id       The handler ID that should be removed.
  38   * @param int    $priority Optional. The priority of the handler to be removed. Default 10.
  39   */
  40  function wp_embed_unregister_handler( $id, $priority = 10 ) {
  41      global $wp_embed;
  42      $wp_embed->unregister_handler( $id, $priority );
  43  }
  44  
  45  /**
  46   * Creates default array of embed parameters.
  47   *
  48   * The width defaults to the content width as specified by the theme. If the
  49   * theme does not specify a content width, then 500px is used.
  50   *
  51   * The default height is 1.5 times the width, or 1000px, whichever is smaller.
  52   *
  53   * The {@see 'embed_defaults'} filter can be used to adjust either of these values.
  54   *
  55   * @since 2.9.0
  56   *
  57   * @global int $content_width
  58   *
  59   * @param string $url Optional. The URL that should be embedded. Default empty.
  60   * @return array {
  61   *     Indexed array of the embed width and height in pixels.
  62   *
  63   *     @type int $0 The embed width.
  64   *     @type int $1 The embed height.
  65   * }
  66   */
  67  function wp_embed_defaults( $url = '' ) {
  68      if ( ! empty( $GLOBALS['content_width'] ) ) {
  69          $width = (int) $GLOBALS['content_width'];
  70      }
  71  
  72      if ( empty( $width ) ) {
  73          $width = 500;
  74      }
  75  
  76      $height = min( ceil( $width * 1.5 ), 1000 );
  77  
  78      /**
  79       * Filters the default array of embed dimensions.
  80       *
  81       * @since 2.9.0
  82       *
  83       * @param int[]  $size {
  84       *     Indexed array of the embed width and height in pixels.
  85       *
  86       *     @type int $0 The embed width.
  87       *     @type int $1 The embed height.
  88       * }
  89       * @param string $url  The URL that should be embedded.
  90       */
  91      return apply_filters( 'embed_defaults', compact( 'width', 'height' ), $url );
  92  }
  93  
  94  /**
  95   * Attempts to fetch the embed HTML for a provided URL using oEmbed.
  96   *
  97   * @since 2.9.0
  98   *
  99   * @see WP_oEmbed
 100   *
 101   * @param string $url  The URL that should be embedded.
 102   * @param array|string $args {
 103   *     Optional. Additional arguments for retrieving embed HTML. Default empty.
 104   *
 105   *     @type int|string $width    Optional. The `maxwidth` value passed to the provider URL.
 106   *     @type int|string $height   Optional. The `maxheight` value passed to the provider URL.
 107   *     @type bool       $discover Optional. Determines whether to attempt to discover link tags
 108   *                                at the given URL for an oEmbed provider when the provider URL
 109   *                                is not found in the built-in providers list. Default true.
 110   * }
 111   * @return string|false The embed HTML on success, false on failure.
 112   */
 113  function wp_oembed_get( $url, $args = '' ) {
 114      $oembed = _wp_oembed_get_object();
 115      return $oembed->get_html( $url, $args );
 116  }
 117  
 118  /**
 119   * Returns the initialized WP_oEmbed object.
 120   *
 121   * @since 2.9.0
 122   * @access private
 123   *
 124   * @return WP_oEmbed object.
 125   */
 126  function _wp_oembed_get_object() {
 127      static $wp_oembed = null;
 128  
 129      if ( is_null( $wp_oembed ) ) {
 130          $wp_oembed = new WP_oEmbed();
 131      }
 132      return $wp_oembed;
 133  }
 134  
 135  /**
 136   * Adds a URL format and oEmbed provider URL pair.
 137   *
 138   * @since 2.9.0
 139   *
 140   * @see WP_oEmbed
 141   *
 142   * @param string $format   The format of URL that this provider can handle. You can use asterisks
 143   *                         as wildcards.
 144   * @param string $provider The URL to the oEmbed provider.
 145   * @param bool   $regex    Optional. Whether the `$format` parameter is in a RegEx format. Default false.
 146   */
 147  function wp_oembed_add_provider( $format, $provider, $regex = false ) {
 148      if ( did_action( 'plugins_loaded' ) ) {
 149          $oembed                       = _wp_oembed_get_object();
 150          $oembed->providers[ $format ] = array( $provider, $regex );
 151      } else {
 152          WP_oEmbed::_add_provider_early( $format, $provider, $regex );
 153      }
 154  }
 155  
 156  /**
 157   * Removes an oEmbed provider.
 158   *
 159   * @since 3.5.0
 160   *
 161   * @see WP_oEmbed
 162   *
 163   * @param string $format The URL format for the oEmbed provider to remove.
 164   * @return bool Was the provider removed successfully?
 165   */
 166  function wp_oembed_remove_provider( $format ) {
 167      if ( did_action( 'plugins_loaded' ) ) {
 168          $oembed = _wp_oembed_get_object();
 169  
 170          if ( isset( $oembed->providers[ $format ] ) ) {
 171              unset( $oembed->providers[ $format ] );
 172              return true;
 173          }
 174      } else {
 175          WP_oEmbed::_remove_provider_early( $format );
 176      }
 177  
 178      return false;
 179  }
 180  
 181  /**
 182   * Determines if default embed handlers should be loaded.
 183   *
 184   * Checks to make sure that the embeds library hasn't already been loaded. If
 185   * it hasn't, then it will load the embeds library.
 186   *
 187   * @since 2.9.0
 188   *
 189   * @see wp_embed_register_handler()
 190   */
 191  function wp_maybe_load_embeds() {
 192      /**
 193       * Filters whether to load the default embed handlers.
 194       *
 195       * Returning a falsey value will prevent loading the default embed handlers.
 196       *
 197       * @since 2.9.0
 198       *
 199       * @param bool $maybe_load_embeds Whether to load the embeds library. Default true.
 200       */
 201      if ( ! apply_filters( 'load_default_embeds', true ) ) {
 202          return;
 203      }
 204  
 205      wp_embed_register_handler( 'youtube_embed_url', '#https?://(www.)?youtube\.com/(?:v|embed)/([^/]+)#i', 'wp_embed_handler_youtube' );
 206  
 207      /**
 208       * Filters the audio embed handler callback.
 209       *
 210       * @since 3.6.0
 211       *
 212       * @param callable $handler Audio embed handler callback function.
 213       */
 214      wp_embed_register_handler( 'audio', '#^https?://.+?\.(' . implode( '|', wp_get_audio_extensions() ) . ')$#i', apply_filters( 'wp_audio_embed_handler', 'wp_embed_handler_audio' ), 9999 );
 215  
 216      /**
 217       * Filters the video embed handler callback.
 218       *
 219       * @since 3.6.0
 220       *
 221       * @param callable $handler Video embed handler callback function.
 222       */
 223      wp_embed_register_handler( 'video', '#^https?://.+?\.(' . implode( '|', wp_get_video_extensions() ) . ')$#i', apply_filters( 'wp_video_embed_handler', 'wp_embed_handler_video' ), 9999 );
 224  }
 225  
 226  /**
 227   * YouTube iframe embed handler callback.
 228   *
 229   * Catches YouTube iframe embed URLs that are not parsable by oEmbed but can be translated into a URL that is.
 230   *
 231   * @since 4.0.0
 232   *
 233   * @global WP_Embed $wp_embed
 234   *
 235   * @param array  $matches The RegEx matches from the provided regex when calling
 236   *                        wp_embed_register_handler().
 237   * @param array  $attr    Embed attributes.
 238   * @param string $url     The original URL that was matched by the regex.
 239   * @param array  $rawattr The original unmodified attributes.
 240   * @return string The embed HTML.
 241   */
 242  function wp_embed_handler_youtube( $matches, $attr, $url, $rawattr ) {
 243      global $wp_embed;
 244      $embed = $wp_embed->autoembed( sprintf( 'https://youtube.com/watch?v=%s', urlencode( $matches[2] ) ) );
 245  
 246      /**
 247       * Filters the YoutTube embed output.
 248       *
 249       * @since 4.0.0
 250       *
 251       * @see wp_embed_handler_youtube()
 252       *
 253       * @param string $embed   YouTube embed output.
 254       * @param array  $attr    An array of embed attributes.
 255       * @param string $url     The original URL that was matched by the regex.
 256       * @param array  $rawattr The original unmodified attributes.
 257       */
 258      return apply_filters( 'wp_embed_handler_youtube', $embed, $attr, $url, $rawattr );
 259  }
 260  
 261  /**
 262   * Audio embed handler callback.
 263   *
 264   * @since 3.6.0
 265   *
 266   * @param array  $matches The RegEx matches from the provided regex when calling wp_embed_register_handler().
 267   * @param array  $attr Embed attributes.
 268   * @param string $url The original URL that was matched by the regex.
 269   * @param array  $rawattr The original unmodified attributes.
 270   * @return string The embed HTML.
 271   */
 272  function wp_embed_handler_audio( $matches, $attr, $url, $rawattr ) {
 273      $audio = sprintf( '[audio src="%s" /]', esc_url( $url ) );
 274  
 275      /**
 276       * Filters the audio embed output.
 277       *
 278       * @since 3.6.0
 279       *
 280       * @param string $audio   Audio embed output.
 281       * @param array  $attr    An array of embed attributes.
 282       * @param string $url     The original URL that was matched by the regex.
 283       * @param array  $rawattr The original unmodified attributes.
 284       */
 285      return apply_filters( 'wp_embed_handler_audio', $audio, $attr, $url, $rawattr );
 286  }
 287  
 288  /**
 289   * Video embed handler callback.
 290   *
 291   * @since 3.6.0
 292   *
 293   * @param array  $matches The RegEx matches from the provided regex when calling wp_embed_register_handler().
 294   * @param array  $attr    Embed attributes.
 295   * @param string $url     The original URL that was matched by the regex.
 296   * @param array  $rawattr The original unmodified attributes.
 297   * @return string The embed HTML.
 298   */
 299  function wp_embed_handler_video( $matches, $attr, $url, $rawattr ) {
 300      $dimensions = '';
 301      if ( ! empty( $rawattr['width'] ) && ! empty( $rawattr['height'] ) ) {
 302          $dimensions .= sprintf( 'width="%d" ', (int) $rawattr['width'] );
 303          $dimensions .= sprintf( 'height="%d" ', (int) $rawattr['height'] );
 304      }
 305      $video = sprintf( '[video %s src="%s" /]', $dimensions, esc_url( $url ) );
 306  
 307      /**
 308       * Filters the video embed output.
 309       *
 310       * @since 3.6.0
 311       *
 312       * @param string $video   Video embed output.
 313       * @param array  $attr    An array of embed attributes.
 314       * @param string $url     The original URL that was matched by the regex.
 315       * @param array  $rawattr The original unmodified attributes.
 316       */
 317      return apply_filters( 'wp_embed_handler_video', $video, $attr, $url, $rawattr );
 318  }
 319  
 320  /**
 321   * Registers the oEmbed REST API route.
 322   *
 323   * @since 4.4.0
 324   */
 325  function wp_oembed_register_route() {
 326      $controller = new WP_oEmbed_Controller();
 327      $controller->register_routes();
 328  }
 329  
 330  /**
 331   * Adds oEmbed discovery links in the website <head>.
 332   *
 333   * @since 4.4.0
 334   */
 335  function wp_oembed_add_discovery_links() {
 336      $output = '';
 337  
 338      if ( is_singular() ) {
 339          $output .= '<link rel="alternate" type="application/json+oembed" href="' . esc_url( get_oembed_endpoint_url( get_permalink() ) ) . '" />' . "\n";
 340  
 341          if ( class_exists( 'SimpleXMLElement' ) ) {
 342              $output .= '<link rel="alternate" type="text/xml+oembed" href="' . esc_url( get_oembed_endpoint_url( get_permalink(), 'xml' ) ) . '" />' . "\n";
 343          }
 344      }
 345  
 346      /**
 347       * Filters the oEmbed discovery links HTML.
 348       *
 349       * @since 4.4.0
 350       *
 351       * @param string $output HTML of the discovery links.
 352       */
 353      echo apply_filters( 'oembed_discovery_links', $output );
 354  }
 355  
 356  /**
 357   * Adds the necessary JavaScript to communicate with the embedded iframes.
 358   *
 359   * @since 4.4.0
 360   */
 361  function wp_oembed_add_host_js() {
 362      wp_enqueue_script( 'wp-embed' );
 363  }
 364  
 365  /**
 366   * Retrieves the URL to embed a specific post in an iframe.
 367   *
 368   * @since 4.4.0
 369   *
 370   * @param int|WP_Post $post Optional. Post ID or object. Defaults to the current post.
 371   * @return string|false The post embed URL on success, false if the post doesn't exist.
 372   */
 373  function get_post_embed_url( $post = null ) {
 374      $post = get_post( $post );
 375  
 376      if ( ! $post ) {
 377          return false;
 378      }
 379  
 380      $embed_url     = trailingslashit( get_permalink( $post ) ) . user_trailingslashit( 'embed' );
 381      $path_conflict = get_page_by_path( str_replace( home_url(), '', $embed_url ), OBJECT, get_post_types( array( 'public' => true ) ) );
 382  
 383      if ( ! get_option( 'permalink_structure' ) || $path_conflict ) {
 384          $embed_url = add_query_arg( array( 'embed' => 'true' ), get_permalink( $post ) );
 385      }
 386  
 387      /**
 388       * Filters the URL to embed a specific post.
 389       *
 390       * @since 4.4.0
 391       *
 392       * @param string  $embed_url The post embed URL.
 393       * @param WP_Post $post      The corresponding post object.
 394       */
 395      return esc_url_raw( apply_filters( 'post_embed_url', $embed_url, $post ) );
 396  }
 397  
 398  /**
 399   * Retrieves the oEmbed endpoint URL for a given permalink.
 400   *
 401   * Pass an empty string as the first argument to get the endpoint base URL.
 402   *
 403   * @since 4.4.0
 404   *
 405   * @param string $permalink Optional. The permalink used for the `url` query arg. Default empty.
 406   * @param string $format    Optional. The requested response format. Default 'json'.
 407   * @return string The oEmbed endpoint URL.
 408   */
 409  function get_oembed_endpoint_url( $permalink = '', $format = 'json' ) {
 410      $url = rest_url( 'oembed/1.0/embed' );
 411  
 412      if ( '' !== $permalink ) {
 413          $url = add_query_arg(
 414              array(
 415                  'url'    => urlencode( $permalink ),
 416                  'format' => ( 'json' !== $format ) ? $format : false,
 417              ),
 418              $url
 419          );
 420      }
 421  
 422      /**
 423       * Filters the oEmbed endpoint URL.
 424       *
 425       * @since 4.4.0
 426       *
 427       * @param string $url       The URL to the oEmbed endpoint.
 428       * @param string $permalink The permalink used for the `url` query arg.
 429       * @param string $format    The requested response format.
 430       */
 431      return apply_filters( 'oembed_endpoint_url', $url, $permalink, $format );
 432  }
 433  
 434  /**
 435   * Retrieves the embed code for a specific post.
 436   *
 437   * @since 4.4.0
 438   *
 439   * @param int         $width  The width for the response.
 440   * @param int         $height The height for the response.
 441   * @param int|WP_Post $post   Optional. Post ID or object. Default is global `$post`.
 442   * @return string|false Embed code on success, false if post doesn't exist.
 443   */
 444  function get_post_embed_html( $width, $height, $post = null ) {
 445      $post = get_post( $post );
 446  
 447      if ( ! $post ) {
 448          return false;
 449      }
 450  
 451      $embed_url = get_post_embed_url( $post );
 452  
 453      $output = '<blockquote class="wp-embedded-content"><a href="' . esc_url( get_permalink( $post ) ) . '">' . get_the_title( $post ) . "</a></blockquote>\n";
 454  
 455      $output .= "<script type='text/javascript'>\n";
 456      $output .= "<!--//--><![CDATA[//><!--\n";
 457      if ( SCRIPT_DEBUG ) {
 458          $output .= file_get_contents( ABSPATH . WPINC . '/js/wp-embed.js' );
 459      } else {
 460          /*
 461           * If you're looking at a src version of this file, you'll see an "include"
 462           * statement below. This is used by the `npm run build` process to directly
 463           * include a minified version of wp-embed.js, instead of using the
 464           * file_get_contents() method from above.
 465           *
 466           * If you're looking at a build version of this file, you'll see a string of
 467           * minified JavaScript. If you need to debug it, please turn on SCRIPT_DEBUG
 468           * and edit wp-embed.js directly.
 469           */
 470          $output .= <<<JS
 471          /*! This file is auto-generated */
 472          !function(c,d){"use strict";var e=!1,n=!1;if(d.querySelector)if(c.addEventListener)e=!0;if(c.wp=c.wp||{},!c.wp.receiveEmbedMessage)if(c.wp.receiveEmbedMessage=function(e){var t=e.data;if(t)if(t.secret||t.message||t.value)if(!/[^a-zA-Z0-9]/.test(t.secret)){for(var r,a,i,s=d.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),n=d.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),o=0;o<n.length;o++)n[o].style.display="none";for(o=0;o<s.length;o++)if(r=s[o],e.source===r.contentWindow){if(r.removeAttribute("style"),"height"===t.message){if(1e3<(i=parseInt(t.value,10)))i=1e3;else if(~~i<200)i=200;r.height=i}if("link"===t.message)if(a=d.createElement("a"),i=d.createElement("a"),a.href=r.getAttribute("src"),i.href=t.value,i.host===a.host)if(d.activeElement===r)c.top.location.href=t.value}}},e)c.addEventListener("message",c.wp.receiveEmbedMessage,!1),d.addEventListener("DOMContentLoaded",t,!1),c.addEventListener("load",t,!1);function t(){if(!n){n=!0;for(var e,t,r=-1!==navigator.appVersion.indexOf("MSIE 10"),a=!!navigator.userAgent.match(/Trident.*rv:11\./),i=d.querySelectorAll("iframe.wp-embedded-content"),s=0;s<i.length;s++){if(!(e=i[s]).getAttribute("data-secret"))t=Math.random().toString(36).substr(2,10),e.src+="#?secret="+t,e.setAttribute("data-secret",t);if(r||a)(t=e.cloneNode(!0)).removeAttribute("security"),e.parentNode.replaceChild(t,e)}}}}(window,document);
 473  JS;
 474      }
 475      $output .= "\n//--><!]]>";
 476      $output .= "\n</script>";
 477  
 478      $output .= sprintf(
 479          '<iframe sandbox="allow-scripts" security="restricted" src="%1$s" width="%2$d" height="%3$d" title="%4$s" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe>',
 480          esc_url( $embed_url ),
 481          absint( $width ),
 482          absint( $height ),
 483          esc_attr(
 484              sprintf(
 485                  /* translators: 1: Post title, 2: Site title. */
 486                  __( '&#8220;%1$s&#8221; &#8212; %2$s' ),
 487                  get_the_title( $post ),
 488                  get_bloginfo( 'name' )
 489              )
 490          )
 491      );
 492  
 493      /**
 494       * Filters the embed HTML output for a given post.
 495       *
 496       * @since 4.4.0
 497       *
 498       * @param string  $output The default iframe tag to display embedded content.
 499       * @param WP_Post $post   Current post object.
 500       * @param int     $width  Width of the response.
 501       * @param int     $height Height of the response.
 502       */
 503      return apply_filters( 'embed_html', $output, $post, $width, $height );
 504  }
 505  
 506  /**
 507   * Retrieves the oEmbed response data for a given post.
 508   *
 509   * @since 4.4.0
 510   *
 511   * @param WP_Post|int $post  Post object or ID.
 512   * @param int         $width The requested width.
 513   * @return array|false Response data on success, false if post doesn't exist
 514   *                     or is not publicly viewable.
 515   */
 516  function get_oembed_response_data( $post, $width ) {
 517      $post  = get_post( $post );
 518      $width = absint( $width );
 519  
 520      if ( ! $post ) {
 521          return false;
 522      }
 523  
 524      if ( ! is_post_publicly_viewable( $post ) ) {
 525          return false;
 526      }
 527  
 528      /**
 529       * Filters the allowed minimum and maximum widths for the oEmbed response.
 530       *
 531       * @since 4.4.0
 532       *
 533       * @param array $min_max_width {
 534       *     Minimum and maximum widths for the oEmbed response.
 535       *
 536       *     @type int $min Minimum width. Default 200.
 537       *     @type int $max Maximum width. Default 600.
 538       * }
 539       */
 540      $min_max_width = apply_filters(
 541          'oembed_min_max_width',
 542          array(
 543              'min' => 200,
 544              'max' => 600,
 545          )
 546      );
 547  
 548      $width  = min( max( $min_max_width['min'], $width ), $min_max_width['max'] );
 549      $height = max( ceil( $width / 16 * 9 ), 200 );
 550  
 551      $data = array(
 552          'version'       => '1.0',
 553          'provider_name' => get_bloginfo( 'name' ),
 554          'provider_url'  => get_home_url(),
 555          'author_name'   => get_bloginfo( 'name' ),
 556          'author_url'    => get_home_url(),
 557          'title'         => get_the_title( $post ),
 558          'type'          => 'link',
 559      );
 560  
 561      $author = get_userdata( $post->post_author );
 562  
 563      if ( $author ) {
 564          $data['author_name'] = $author->display_name;
 565          $data['author_url']  = get_author_posts_url( $author->ID );
 566      }
 567  
 568      /**
 569       * Filters the oEmbed response data.
 570       *
 571       * @since 4.4.0
 572       *
 573       * @param array   $data   The response data.
 574       * @param WP_Post $post   The post object.
 575       * @param int     $width  The requested width.
 576       * @param int     $height The calculated height.
 577       */
 578      return apply_filters( 'oembed_response_data', $data, $post, $width, $height );
 579  }
 580  
 581  
 582  /**
 583   * Retrieves the oEmbed response data for a given URL.
 584   *
 585   * @since 5.0.0
 586   *
 587   * @param string $url  The URL that should be inspected for discovery `<link>` tags.
 588   * @param array  $args oEmbed remote get arguments.
 589   * @return object|false oEmbed response data if the URL does belong to the current site. False otherwise.
 590   */
 591  function get_oembed_response_data_for_url( $url, $args ) {
 592      $switched_blog = false;
 593  
 594      if ( is_multisite() ) {
 595          $url_parts = wp_parse_args(
 596              wp_parse_url( $url ),
 597              array(
 598                  'host' => '',
 599                  'path' => '/',
 600              )
 601          );
 602  
 603          $qv = array(
 604              'domain'                 => $url_parts['host'],
 605              'path'                   => '/',
 606              'update_site_meta_cache' => false,
 607          );
 608  
 609          // In case of subdirectory configs, set the path.
 610          if ( ! is_subdomain_install() ) {
 611              $path = explode( '/', ltrim( $url_parts['path'], '/' ) );
 612              $path = reset( $path );
 613  
 614              if ( $path ) {
 615                  $qv['path'] = get_network()->path . $path . '/';
 616              }
 617          }
 618  
 619          $sites = get_sites( $qv );
 620          $site  = reset( $sites );
 621  
 622          // Do not allow embeds for deleted/archived/spam sites.
 623          if ( ! empty( $site->deleted ) || ! empty( $site->spam ) || ! empty( $site->archived ) ) {
 624              return false;
 625          }
 626  
 627          if ( $site && get_current_blog_id() !== (int) $site->blog_id ) {
 628              switch_to_blog( $site->blog_id );
 629              $switched_blog = true;
 630          }
 631      }
 632  
 633      $post_id = url_to_postid( $url );
 634  
 635      /** This filter is documented in wp-includes/class-wp-oembed-controller.php */
 636      $post_id = apply_filters( 'oembed_request_post_id', $post_id, $url );
 637  
 638      if ( ! $post_id ) {
 639          if ( $switched_blog ) {
 640              restore_current_blog();
 641          }
 642  
 643          return false;
 644      }
 645  
 646      $width = isset( $args['width'] ) ? $args['width'] : 0;
 647  
 648      $data = get_oembed_response_data( $post_id, $width );
 649  
 650      if ( $switched_blog ) {
 651          restore_current_blog();
 652      }
 653  
 654      return $data ? (object) $data : false;
 655  }
 656  
 657  
 658  /**
 659   * Filters the oEmbed response data to return an iframe embed code.
 660   *
 661   * @since 4.4.0
 662   *
 663   * @param array   $data   The response data.
 664   * @param WP_Post $post   The post object.
 665   * @param int     $width  The requested width.
 666   * @param int     $height The calculated height.
 667   * @return array The modified response data.
 668   */
 669  function get_oembed_response_data_rich( $data, $post, $width, $height ) {
 670      $data['width']  = absint( $width );
 671      $data['height'] = absint( $height );
 672      $data['type']   = 'rich';
 673      $data['html']   = get_post_embed_html( $width, $height, $post );
 674  
 675      // Add post thumbnail to response if available.
 676      $thumbnail_id = false;
 677  
 678      if ( has_post_thumbnail( $post->ID ) ) {
 679          $thumbnail_id = get_post_thumbnail_id( $post->ID );
 680      }
 681  
 682      if ( 'attachment' === get_post_type( $post ) ) {
 683          if ( wp_attachment_is_image( $post ) ) {
 684              $thumbnail_id = $post->ID;
 685          } elseif ( wp_attachment_is( 'video', $post ) ) {
 686              $thumbnail_id = get_post_thumbnail_id( $post );
 687              $data['type'] = 'video';
 688          }
 689      }
 690  
 691      if ( $thumbnail_id ) {
 692          list( $thumbnail_url, $thumbnail_width, $thumbnail_height ) = wp_get_attachment_image_src( $thumbnail_id, array( $width, 99999 ) );
 693          $data['thumbnail_url']                                      = $thumbnail_url;
 694          $data['thumbnail_width']                                    = $thumbnail_width;
 695          $data['thumbnail_height']                                   = $thumbnail_height;
 696      }
 697  
 698      return $data;
 699  }
 700  
 701  /**
 702   * Ensures that the specified format is either 'json' or 'xml'.
 703   *
 704   * @since 4.4.0
 705   *
 706   * @param string $format The oEmbed response format. Accepts 'json' or 'xml'.
 707   * @return string The format, either 'xml' or 'json'. Default 'json'.
 708   */
 709  function wp_oembed_ensure_format( $format ) {
 710      if ( ! in_array( $format, array( 'json', 'xml' ), true ) ) {
 711          return 'json';
 712      }
 713  
 714      return $format;
 715  }
 716  
 717  /**
 718   * Hooks into the REST API output to print XML instead of JSON.
 719   *
 720   * This is only done for the oEmbed API endpoint,
 721   * which supports both formats.
 722   *
 723   * @access private
 724   * @since 4.4.0
 725   *
 726   * @param bool             $served  Whether the request has already been served.
 727   * @param WP_HTTP_Response $result  Result to send to the client. Usually a `WP_REST_Response`.
 728   * @param WP_REST_Request  $request Request used to generate the response.
 729   * @param WP_REST_Server   $server  Server instance.
 730   * @return true
 731   */
 732  function _oembed_rest_pre_serve_request( $served, $result, $request, $server ) {
 733      $params = $request->get_params();
 734  
 735      if ( '/oembed/1.0/embed' !== $request->get_route() || 'GET' !== $request->get_method() ) {
 736          return $served;
 737      }
 738  
 739      if ( ! isset( $params['format'] ) || 'xml' !== $params['format'] ) {
 740          return $served;
 741      }
 742  
 743      // Embed links inside the request.
 744      $data = $server->response_to_data( $result, false );
 745  
 746      if ( ! class_exists( 'SimpleXMLElement' ) ) {
 747          status_header( 501 );
 748          die( get_status_header_desc( 501 ) );
 749      }
 750  
 751      $result = _oembed_create_xml( $data );
 752  
 753      // Bail if there's no XML.
 754      if ( ! $result ) {
 755          status_header( 501 );
 756          return get_status_header_desc( 501 );
 757      }
 758  
 759      if ( ! headers_sent() ) {
 760          $server->send_header( 'Content-Type', 'text/xml; charset=' . get_option( 'blog_charset' ) );
 761      }
 762  
 763      echo $result;
 764  
 765      return true;
 766  }
 767  
 768  /**
 769   * Creates an XML string from a given array.
 770   *
 771   * @since 4.4.0
 772   * @access private
 773   *
 774   * @param array            $data The original oEmbed response data.
 775   * @param SimpleXMLElement $node Optional. XML node to append the result to recursively.
 776   * @return string|false XML string on success, false on error.
 777   */
 778  function _oembed_create_xml( $data, $node = null ) {
 779      if ( ! is_array( $data ) || empty( $data ) ) {
 780          return false;
 781      }
 782  
 783      if ( null === $node ) {
 784          $node = new SimpleXMLElement( '<oembed></oembed>' );
 785      }
 786  
 787      foreach ( $data as $key => $value ) {
 788          if ( is_numeric( $key ) ) {
 789              $key = 'oembed';
 790          }
 791  
 792          if ( is_array( $value ) ) {
 793              $item = $node->addChild( $key );
 794              _oembed_create_xml( $value, $item );
 795          } else {
 796              $node->addChild( $key, esc_html( $value ) );
 797          }
 798      }
 799  
 800      return $node->asXML();
 801  }
 802  
 803  /**
 804   * Filters the given oEmbed HTML to make sure iframes have a title attribute.
 805   *
 806   * @since 5.2.0
 807   *
 808   * @param string $result The oEmbed HTML result.
 809   * @param object $data   A data object result from an oEmbed provider.
 810   * @param string $url    The URL of the content to be embedded.
 811   * @return string The filtered oEmbed result.
 812   */
 813  function wp_filter_oembed_iframe_title_attribute( $result, $data, $url ) {
 814      if ( false === $result || ! in_array( $data->type, array( 'rich', 'video' ), true ) ) {
 815          return $result;
 816      }
 817  
 818      $title = ! empty( $data->title ) ? $data->title : '';
 819  
 820      $pattern = '`<iframe([^>]*)>`i';
 821      if ( preg_match( $pattern, $result, $matches ) ) {
 822          $attrs = wp_kses_hair( $matches[1], wp_allowed_protocols() );
 823  
 824          foreach ( $attrs as $attr => $item ) {
 825              $lower_attr = strtolower( $attr );
 826              if ( $lower_attr === $attr ) {
 827                  continue;
 828              }
 829              if ( ! isset( $attrs[ $lower_attr ] ) ) {
 830                  $attrs[ $lower_attr ] = $item;
 831                  unset( $attrs[ $attr ] );
 832              }
 833          }
 834      }
 835  
 836      if ( ! empty( $attrs['title']['value'] ) ) {
 837          $title = $attrs['title']['value'];
 838      }
 839  
 840      /**
 841       * Filters the title attribute of the given oEmbed HTML iframe.
 842       *
 843       * @since 5.2.0
 844       *
 845       * @param string $title  The title attribute.
 846       * @param string $result The oEmbed HTML result.
 847       * @param object $data   A data object result from an oEmbed provider.
 848       * @param string $url    The URL of the content to be embedded.
 849       */
 850      $title = apply_filters( 'oembed_iframe_title_attribute', $title, $result, $data, $url );
 851  
 852      if ( '' === $title ) {
 853          return $result;
 854      }
 855  
 856      if ( isset( $attrs['title'] ) ) {
 857          unset( $attrs['title'] );
 858          $attr_string = implode( ' ', wp_list_pluck( $attrs, 'whole' ) );
 859          $result      = str_replace( $matches[0], '<iframe ' . trim( $attr_string ) . '>', $result );
 860      }
 861      return str_ireplace( '<iframe ', sprintf( '<iframe title="%s" ', esc_attr( $title ) ), $result );
 862  }
 863  
 864  
 865  /**
 866   * Filters the given oEmbed HTML.
 867   *
 868   * If the `$url` isn't on the trusted providers list,
 869   * we need to filter the HTML heavily for security.
 870   *
 871   * Only filters 'rich' and 'video' response types.
 872   *
 873   * @since 4.4.0
 874   *
 875   * @param string $result The oEmbed HTML result.
 876   * @param object $data   A data object result from an oEmbed provider.
 877   * @param string $url    The URL of the content to be embedded.
 878   * @return string The filtered and sanitized oEmbed result.
 879   */
 880  function wp_filter_oembed_result( $result, $data, $url ) {
 881      if ( false === $result || ! in_array( $data->type, array( 'rich', 'video' ), true ) ) {
 882          return $result;
 883      }
 884  
 885      $wp_oembed = _wp_oembed_get_object();
 886  
 887      // Don't modify the HTML for trusted providers.
 888      if ( false !== $wp_oembed->get_provider( $url, array( 'discover' => false ) ) ) {
 889          return $result;
 890      }
 891  
 892      $allowed_html = array(
 893          'a'          => array(
 894              'href' => true,
 895          ),
 896          'blockquote' => array(),
 897          'iframe'     => array(
 898              'src'          => true,
 899              'width'        => true,
 900              'height'       => true,
 901              'frameborder'  => true,
 902              'marginwidth'  => true,
 903              'marginheight' => true,
 904              'scrolling'    => true,
 905              'title'        => true,
 906          ),
 907      );
 908  
 909      $html = wp_kses( $result, $allowed_html );
 910  
 911      preg_match( '|(<blockquote>.*?</blockquote>)?.*(<iframe.*?></iframe>)|ms', $html, $content );
 912      // We require at least the iframe to exist.
 913      if ( empty( $content[2] ) ) {
 914          return false;
 915      }
 916      $html = $content[1] . $content[2];
 917  
 918      preg_match( '/ src=([\'"])(.*?)\1/', $html, $results );
 919  
 920      if ( ! empty( $results ) ) {
 921          $secret = wp_generate_password( 10, false );
 922  
 923          $url = esc_url( "{$results[2]}#?secret=$secret" );
 924          $q   = $results[1];
 925  
 926          $html = str_replace( $results[0], ' src=' . $q . $url . $q . ' data-secret=' . $q . $secret . $q, $html );
 927          $html = str_replace( '<blockquote', "<blockquote data-secret=\"$secret\"", $html );
 928      }
 929  
 930      $allowed_html['blockquote']['data-secret'] = true;
 931      $allowed_html['iframe']['data-secret']     = true;
 932  
 933      $html = wp_kses( $html, $allowed_html );
 934  
 935      if ( ! empty( $content[1] ) ) {
 936          // We have a blockquote to fall back on. Hide the iframe by default.
 937          $html = str_replace( '<iframe', '<iframe style="position: absolute; clip: rect(1px, 1px, 1px, 1px);"', $html );
 938          $html = str_replace( '<blockquote', '<blockquote class="wp-embedded-content"', $html );
 939      }
 940  
 941      $html = str_ireplace( '<iframe', '<iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted"', $html );
 942  
 943      return $html;
 944  }
 945  
 946  /**
 947   * Filters the string in the 'more' link displayed after a trimmed excerpt.
 948   *
 949   * Replaces '[...]' (appended to automatically generated excerpts) with an
 950   * ellipsis and a "Continue reading" link in the embed template.
 951   *
 952   * @since 4.4.0
 953   *
 954   * @param string $more_string Default 'more' string.
 955   * @return string 'Continue reading' link prepended with an ellipsis.
 956   */
 957  function wp_embed_excerpt_more( $more_string ) {
 958      if ( ! is_embed() ) {
 959          return $more_string;
 960      }
 961  
 962      $link = sprintf(
 963          '<a href="%1$s" class="wp-embed-more" target="_top">%2$s</a>',
 964          esc_url( get_permalink() ),
 965          /* translators: %s: Post title. */
 966          sprintf( __( 'Continue reading %s' ), '<span class="screen-reader-text">' . get_the_title() . '</span>' )
 967      );
 968      return ' &hellip; ' . $link;
 969  }
 970  
 971  /**
 972   * Displays the post excerpt for the embed template.
 973   *
 974   * Intended to be used in 'The Loop'.
 975   *
 976   * @since 4.4.0
 977   */
 978  function the_excerpt_embed() {
 979      $output = get_the_excerpt();
 980  
 981      /**
 982       * Filters the post excerpt for the embed template.
 983       *
 984       * @since 4.4.0
 985       *
 986       * @param string $output The current post excerpt.
 987       */
 988      echo apply_filters( 'the_excerpt_embed', $output );
 989  }
 990  
 991  /**
 992   * Filters the post excerpt for the embed template.
 993   *
 994   * Shows players for video and audio attachments.
 995   *
 996   * @since 4.4.0
 997   *
 998   * @param string $content The current post excerpt.
 999   * @return string The modified post excerpt.
1000   */
1001  function wp_embed_excerpt_attachment( $content ) {
1002      if ( is_attachment() ) {
1003          return prepend_attachment( '' );
1004      }
1005  
1006      return $content;
1007  }
1008  
1009  /**
1010   * Enqueues embed iframe default CSS and JS.
1011   *
1012   * Enqueue PNG fallback CSS for embed iframe for legacy versions of IE.
1013   *
1014   * Allows plugins to queue scripts for the embed iframe end using wp_enqueue_script().
1015   * Runs first in oembed_head().
1016   *
1017   * @since 4.4.0
1018   */
1019  function enqueue_embed_scripts() {
1020      wp_enqueue_style( 'wp-embed-template-ie' );
1021  
1022      /**
1023       * Fires when scripts and styles are enqueued for the embed iframe.
1024       *
1025       * @since 4.4.0
1026       */
1027      do_action( 'enqueue_embed_scripts' );
1028  }
1029  
1030  /**
1031   * Prints the CSS in the embed iframe header.
1032   *
1033   * @since 4.4.0
1034   */
1035  function print_embed_styles() {
1036      $type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/css"';
1037      ?>
1038      <style<?php echo $type_attr; ?>>
1039      <?php
1040      if ( SCRIPT_DEBUG ) {
1041          readfile( ABSPATH . WPINC . '/css/wp-embed-template.css' );
1042      } else {
1043          /*
1044           * If you're looking at a src version of this file, you'll see an "include"
1045           * statement below. This is used by the `npm run build` process to directly
1046           * include a minified version of wp-oembed-embed.css, instead of using the
1047           * readfile() method from above.
1048           *
1049           * If you're looking at a build version of this file, you'll see a string of
1050           * minified CSS. If you need to debug it, please turn on SCRIPT_DEBUG
1051           * and edit wp-embed-template.css directly.
1052           */
1053          ?>
1054              /*! This file is auto-generated */
1055              body,html{padding:0;margin:0}body{font-family:sans-serif}.screen-reader-text{border:0;clip:rect(1px,1px,1px,1px);-webkit-clip-path:inset(50%);clip-path:inset(50%);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px;word-wrap:normal!important}.dashicons{display:inline-block;width:20px;height:20px;background-color:transparent;background-repeat:no-repeat;background-size:20px;background-position:center;transition:background .1s 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.dashicons-share{display:inline-block}.wp-embed-share-dialog-open:hover .dashicons-share{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20viewBox%3D%270%200%2020%2020%27%3E%3Cpath%20d%3D%27M14.5%2012q1.24%200%202.12.88T17.5%2015t-.88%202.12-2.12.88-2.12-.88T11.5%2015q0-.34.09-.69l-4.38-2.3Q6.32%2013%205%2013q-1.24%200-2.12-.88T2%2010t.88-2.12T5%207q1.3%200%202.21.99l4.38-2.3q-.09-.35-.09-.69%200-1.24.88-2.12T14.5%202t2.12.88T17.5%205t-.88%202.12T14.5%208q-1.3%200-2.21-.99l-4.38%202.3Q8%209.66%208%2010t-.09.69l4.38%202.3q.89-.99%202.21-.99z%27%20fill%3D%27%230073aa%27%2F%3E%3C%2Fsvg%3E")}.wp-embed{padding:25px;font-size:14px;font-weight:400;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen-Sans,Ubuntu,Cantarell,"Helvetica Neue",sans-serif;line-height:1.5;color:#8c8f94;background:#fff;border:1px solid #dcdcde;box-shadow:0 1px 1px rgba(0,0,0,.05);overflow:auto;zoom:1}.wp-embed a{color:#8c8f94;text-decoration:none}.wp-embed a:hover{text-decoration:underline}.wp-embed-featured-image{margin-bottom:20px}.wp-embed-featured-image img{width:100%;height:auto;border:none}.wp-embed-featured-image.square{float:left;max-width:160px;margin-right:20px}.wp-embed p{margin:0}p.wp-embed-heading{margin:0 0 15px;font-weight:600;font-size:22px;line-height:1.3}.wp-embed-heading a{color:#2c3338}.wp-embed .wp-embed-more{color:#c3c4c7}.wp-embed-footer{display:table;width:100%;margin-top:30px}.wp-embed-site-icon{position:absolute;top:50%;left:0;transform:translateY(-50%);height:25px;width:25px;border:0}.wp-embed-site-title{font-weight:600;line-height:1.78571428}.wp-embed-site-title a{position:relative;display:inline-block;padding-left:35px}.wp-embed-meta,.wp-embed-site-title{display:table-cell}.wp-embed-meta{text-align:right;white-space:nowrap;vertical-align:middle}.wp-embed-comments,.wp-embed-share{display:inline}.wp-embed-meta a:hover{text-decoration:none;color:#2271b1}.wp-embed-comments a{line-height:1.78571428;display:inline-block}.wp-embed-comments+.wp-embed-share{margin-left:10px}.wp-embed-share-dialog{position:absolute;top:0;left:0;right:0;bottom:0;background-color:#1d2327;background-color:rgba(0,0,0,.9);color:#fff;opacity:1;transition:opacity .25s ease-in-out}.wp-embed-share-dialog.hidden{opacity:0;visibility:hidden}.wp-embed-share-dialog-close,.wp-embed-share-dialog-open{margin:-8px 0 0;padding:0;background:0 0;border:none;cursor:pointer;outline:0}.wp-embed-share-dialog-close .dashicons,.wp-embed-share-dialog-open .dashicons{padding:4px}.wp-embed-share-dialog-open .dashicons{top:8px}.wp-embed-share-dialog-close:focus .dashicons,.wp-embed-share-dialog-open:focus .dashicons{box-shadow:0 0 0 1px #4f94d4,0 0 2px 1px rgba(79,148,212,.8);border-radius:100%}.wp-embed-share-dialog-close{position:absolute;top:20px;right:20px;font-size:22px}.wp-embed-share-dialog-close:hover{text-decoration:none}.wp-embed-share-dialog-close .dashicons{height:24px;width:24px;background-size:24px}.wp-embed-share-dialog-content{height:100%;transform-style:preserve-3d;overflow:hidden}.wp-embed-share-dialog-text{margin-top:25px;padding:20px}.wp-embed-share-tabs{margin:0 0 20px;padding:0;list-style:none}.wp-embed-share-tab-button{display:inline-block}.wp-embed-share-tab-button button{margin:0;padding:0;border:none;background:0 0;font-size:16px;line-height:1.3;color:#a7aaad;cursor:pointer;transition:color .1s ease-in}.wp-embed-share-tab-button [aria-selected=true]{color:#fff}.wp-embed-share-tab-button button:hover{color:#fff}.wp-embed-share-tab-button+.wp-embed-share-tab-button{margin:0 0 0 10px;padding:0 0 0 11px;border-left:1px solid #a7aaad}.wp-embed-share-tab[aria-hidden=true]{display:none}p.wp-embed-share-description{margin:0;font-size:14px;line-height:1;font-style:italic;color:#a7aaad}.wp-embed-share-input{box-sizing:border-box;width:100%;border:none;height:28px;margin:0 0 10px;padding:0 5px;font-size:14px;font-weight:400;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen-Sans,Ubuntu,Cantarell,"Helvetica Neue",sans-serif;line-height:1.5;resize:none;cursor:text}textarea.wp-embed-share-input{height:72px}html[dir=rtl] .wp-embed-featured-image.square{float:right;margin-right:0;margin-left:20px}html[dir=rtl] .wp-embed-site-title a{padding-left:0;padding-right:35px}html[dir=rtl] .wp-embed-site-icon{margin-right:0;margin-left:10px;left:auto;right:0}html[dir=rtl] .wp-embed-meta{text-align:left}html[dir=rtl] .wp-embed-share{margin-left:0;margin-right:10px}html[dir=rtl] .wp-embed-share-dialog-close{right:auto;left:20px}html[dir=rtl] .wp-embed-share-tab-button+.wp-embed-share-tab-button{margin:0 10px 0 0;padding:0 11px 0 0;border-left:none;border-right:1px solid #a7aaad}
1056          <?php
1057      }
1058      ?>
1059      </style>
1060      <?php
1061  }
1062  
1063  /**
1064   * Prints the JavaScript in the embed iframe header.
1065   *
1066   * @since 4.4.0
1067   */
1068  function print_embed_scripts() {
1069      $type_attr = current_theme_supports( 'html5', 'script' ) ? '' : ' type="text/javascript"';
1070      ?>
1071      <script<?php echo $type_attr; ?>>
1072      <?php
1073      if ( SCRIPT_DEBUG ) {
1074          readfile( ABSPATH . WPINC . '/js/wp-embed-template.js' );
1075      } else {
1076          /*
1077           * If you're looking at a src version of this file, you'll see an "include"
1078           * statement below. This is used by the `npm run build` process to directly
1079           * include a minified version of wp-embed-template.js, instead of using the
1080           * readfile() method from above.
1081           *
1082           * If you're looking at a build version of this file, you'll see a string of
1083           * minified JavaScript. If you need to debug it, please turn on SCRIPT_DEBUG
1084           * and edit wp-embed-template.js directly.
1085           */
1086          ?>
1087              /*! This file is auto-generated */
1088              !function(c,u){"use strict";var r,t,e,n=u.querySelector&&c.addEventListener,b=!1;function f(e,t){c.parent.postMessage({message:e,value:t,secret:r},"*")}function i(){if(!b){b=!0;var e,r=u.querySelector(".wp-embed-share-dialog"),t=u.querySelector(".wp-embed-share-dialog-open"),n=u.querySelector(".wp-embed-share-dialog-close"),i=u.querySelectorAll(".wp-embed-share-input"),a=u.querySelectorAll(".wp-embed-share-tab-button button"),o=u.querySelector(".wp-embed-featured-image img");if(i)for(e=0;e<i.length;e++)i[e].addEventListener("click",function(e){e.target.select()});if(t&&t.addEventListener("click",function(){r.className=r.className.replace("hidden",""),u.querySelector('.wp-embed-share-tab-button [aria-selected="true"]').focus()}),n&&n.addEventListener("click",function(){l()}),a)for(e=0;e<a.length;e++)a[e].addEventListener("click",s),a[e].addEventListener("keydown",d);u.addEventListener("keydown",function(e){var t;27===e.keyCode&&-1===r.className.indexOf("hidden")?l():9===e.keyCode&&(t=e,e=u.querySelector('.wp-embed-share-tab-button [aria-selected="true"]'),n!==t.target||t.shiftKey?e===t.target&&t.shiftKey&&(n.focus(),t.preventDefault()):(e.focus(),t.preventDefault()))},!1),c.self!==c.top&&(f("height",Math.ceil(u.body.getBoundingClientRect().height)),o&&o.addEventListener("load",function(){f("height",Math.ceil(u.body.getBoundingClientRect().height))}),u.addEventListener("click",function(e){var t=((t=e.target).hasAttribute("href")?t:t.parentElement).getAttribute("href");event.altKey||event.ctrlKey||event.metaKey||event.shiftKey||t&&(f("link",t),e.preventDefault())}))}function l(){r.className+=" hidden",u.querySelector(".wp-embed-share-dialog-open").focus()}function s(e){var t=u.querySelector('.wp-embed-share-tab-button [aria-selected="true"]');t.setAttribute("aria-selected","false"),u.querySelector("#"+t.getAttribute("aria-controls")).setAttribute("aria-hidden","true"),e.target.setAttribute("aria-selected","true"),u.querySelector("#"+e.target.getAttribute("aria-controls")).setAttribute("aria-hidden","false")}function d(e){var t,r=e.target,n=r.parentElement.previousElementSibling,i=r.parentElement.nextElementSibling;if(37===e.keyCode)t=n;else{if(39!==e.keyCode)return!1;t=i}(t="rtl"===u.documentElement.getAttribute("dir")?t===n?i:n:t)&&(t=t.firstElementChild,r.setAttribute("tabindex","-1"),r.setAttribute("aria-selected",!1),u.querySelector("#"+r.getAttribute("aria-controls")).setAttribute("aria-hidden","true"),t.setAttribute("tabindex","0"),t.setAttribute("aria-selected","true"),t.focus(),u.querySelector("#"+t.getAttribute("aria-controls")).setAttribute("aria-hidden","false"))}}n&&(!function e(){c.self===c.top||r||(r=c.location.hash.replace(/.*secret=([\d\w]{10}).*/,"$1"),clearTimeout(t),t=setTimeout(function(){e()},100))}(),u.documentElement.className=u.documentElement.className.replace(/\bno-js\b/,"")+" js",u.addEventListener("DOMContentLoaded",i,!1),c.addEventListener("load",i,!1),c.addEventListener("resize",function(){c.self!==c.top&&(clearTimeout(e),e=setTimeout(function(){f("height",Math.ceil(u.body.getBoundingClientRect().height))},100))},!1))}(window,document);
1089          <?php
1090      }
1091      ?>
1092      </script>
1093      <?php
1094  }
1095  
1096  /**
1097   * Prepare the oembed HTML to be displayed in an RSS feed.
1098   *
1099   * @since 4.4.0
1100   * @access private
1101   *
1102   * @param string $content The content to filter.
1103   * @return string The filtered content.
1104   */
1105  function _oembed_filter_feed_content( $content ) {
1106      return str_replace( '<iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted" style="position: absolute; clip: rect(1px, 1px, 1px, 1px);"', '<iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted"', $content );
1107  }
1108  
1109  /**
1110   * Prints the necessary markup for the embed comments button.
1111   *
1112   * @since 4.4.0
1113   */
1114  function print_embed_comments_button() {
1115      if ( is_404() || ! ( get_comments_number() || comments_open() ) ) {
1116          return;
1117      }
1118      ?>
1119      <div class="wp-embed-comments">
1120          <a href="<?php comments_link(); ?>" target="_top">
1121              <span class="dashicons dashicons-admin-comments"></span>
1122              <?php
1123              printf(
1124                  /* translators: %s: Number of comments. */
1125                  _n(
1126                      '%s <span class="screen-reader-text">Comment</span>',
1127                      '%s <span class="screen-reader-text">Comments</span>',
1128                      get_comments_number()
1129                  ),
1130                  number_format_i18n( get_comments_number() )
1131              );
1132              ?>
1133          </a>
1134      </div>
1135      <?php
1136  }
1137  
1138  /**
1139   * Prints the necessary markup for the embed sharing button.
1140   *
1141   * @since 4.4.0
1142   */
1143  function print_embed_sharing_button() {
1144      if ( is_404() ) {
1145          return;
1146      }
1147      ?>
1148      <div class="wp-embed-share">
1149          <button type="button" class="wp-embed-share-dialog-open" aria-label="<?php esc_attr_e( 'Open sharing dialog' ); ?>">
1150              <span class="dashicons dashicons-share"></span>
1151          </button>
1152      </div>
1153      <?php
1154  }
1155  
1156  /**
1157   * Prints the necessary markup for the embed sharing dialog.
1158   *
1159   * @since 4.4.0
1160   */
1161  function print_embed_sharing_dialog() {
1162      if ( is_404() ) {
1163          return;
1164      }
1165      ?>
1166      <div class="wp-embed-share-dialog hidden" role="dialog" aria-label="<?php esc_attr_e( 'Sharing options' ); ?>">
1167          <div class="wp-embed-share-dialog-content">
1168              <div class="wp-embed-share-dialog-text">
1169                  <ul class="wp-embed-share-tabs" role="tablist">
1170                      <li class="wp-embed-share-tab-button wp-embed-share-tab-button-wordpress" role="presentation">
1171                          <button type="button" role="tab" aria-controls="wp-embed-share-tab-wordpress" aria-selected="true" tabindex="0"><?php esc_html_e( 'WordPress Embed' ); ?></button>
1172                      </li>
1173                      <li class="wp-embed-share-tab-button wp-embed-share-tab-button-html" role="presentation">
1174                          <button type="button" role="tab" aria-controls="wp-embed-share-tab-html" aria-selected="false" tabindex="-1"><?php esc_html_e( 'HTML Embed' ); ?></button>
1175                      </li>
1176                  </ul>
1177                  <div id="wp-embed-share-tab-wordpress" class="wp-embed-share-tab" role="tabpanel" aria-hidden="false">
1178                      <input type="text" value="<?php the_permalink(); ?>" class="wp-embed-share-input" aria-describedby="wp-embed-share-description-wordpress" tabindex="0" readonly/>
1179  
1180                      <p class="wp-embed-share-description" id="wp-embed-share-description-wordpress">
1181                          <?php _e( 'Copy and paste this URL into your WordPress site to embed' ); ?>
1182                      </p>
1183                  </div>
1184                  <div id="wp-embed-share-tab-html" class="wp-embed-share-tab" role="tabpanel" aria-hidden="true">
1185                      <textarea class="wp-embed-share-input" aria-describedby="wp-embed-share-description-html" tabindex="0" readonly><?php echo esc_textarea( get_post_embed_html( 600, 400 ) ); ?></textarea>
1186  
1187                      <p class="wp-embed-share-description" id="wp-embed-share-description-html">
1188                          <?php _e( 'Copy and paste this code into your site to embed' ); ?>
1189                      </p>
1190                  </div>
1191              </div>
1192  
1193              <button type="button" class="wp-embed-share-dialog-close" aria-label="<?php esc_attr_e( 'Close sharing dialog' ); ?>">
1194                  <span class="dashicons dashicons-no"></span>
1195              </button>
1196          </div>
1197      </div>
1198      <?php
1199  }
1200  
1201  /**
1202   * Prints the necessary markup for the site title in an embed template.
1203   *
1204   * @since 4.5.0
1205   */
1206  function the_embed_site_title() {
1207      $site_title = sprintf(
1208          '<a href="%s" target="_top"><img src="%s" srcset="%s 2x" width="32" height="32" alt="" class="wp-embed-site-icon" /><span>%s</span></a>',
1209          esc_url( home_url() ),
1210          esc_url( get_site_icon_url( 32, includes_url( 'images/w-logo-blue.png' ) ) ),
1211          esc_url( get_site_icon_url( 64, includes_url( 'images/w-logo-blue.png' ) ) ),
1212          esc_html( get_bloginfo( 'name' ) )
1213      );
1214  
1215      $site_title = '<div class="wp-embed-site-title">' . $site_title . '</div>';
1216  
1217      /**
1218       * Filters the site title HTML in the embed footer.
1219       *
1220       * @since 4.4.0
1221       *
1222       * @param string $site_title The site title HTML.
1223       */
1224      echo apply_filters( 'embed_site_title_html', $site_title );
1225  }
1226  
1227  /**
1228   * Filters the oEmbed result before any HTTP requests are made.
1229   *
1230   * If the URL belongs to the current site, the result is fetched directly instead of
1231   * going through the oEmbed discovery process.
1232   *
1233   * @since 4.5.3
1234   *
1235   * @param null|string $result The UNSANITIZED (and potentially unsafe) HTML that should be used to embed. Default null.
1236   * @param string      $url    The URL that should be inspected for discovery `<link>` tags.
1237   * @param array       $args   oEmbed remote get arguments.
1238   * @return null|string The UNSANITIZED (and potentially unsafe) HTML that should be used to embed.
1239   *                     Null if the URL does not belong to the current site.
1240   */
1241  function wp_filter_pre_oembed_result( $result, $url, $args ) {
1242      $data = get_oembed_response_data_for_url( $url, $args );
1243  
1244      if ( $data ) {
1245          return _wp_oembed_get_object()->data2html( $data, $url );
1246      }
1247  
1248      return $result;
1249  }


Generated: Sun Sep 19 01:00:04 2021 Cross-referenced by PHPXref 0.7.1