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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  $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(d,l){"use strict";var e=!1,o=!1;if(l.querySelector)if(d.addEventListener)e=!0;if(d.wp=d.wp||{},!d.wp.receiveEmbedMessage)if(d.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)){var r,a,i,s,n,o=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),c=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]');for(r=0;r<c.length;r++)c[r].style.display="none";for(r=0;r<o.length;r++)if(a=o[r],e.source===a.contentWindow){if(a.removeAttribute("style"),"height"===t.message){if(1e3<(i=parseInt(t.value,10)))i=1e3;else if(~~i<200)i=200;a.height=i}if("link"===t.message)if(s=l.createElement("a"),n=l.createElement("a"),s.href=a.getAttribute("src"),n.href=t.value,n.host===s.host)if(l.activeElement===a)d.top.location.href=t.value}}},e)d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",t,!1),d.addEventListener("load",t,!1);function t(){if(!o){o=!0;var e,t,r,a,i=-1!==navigator.appVersion.indexOf("MSIE 10"),s=!!navigator.userAgent.match(/Trident.*rv:11\./),n=l.querySelectorAll("iframe.wp-embedded-content");for(t=0;t<n.length;t++){if(!(r=n[t]).getAttribute("data-secret"))a=Math.random().toString(36).substr(2,10),r.src+="#?secret="+a,r.setAttribute("data-secret",a);if(i||s)(e=r.cloneNode(!0)).removeAttribute("security"),r.parentNode.replaceChild(e,r)}}}}(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   */
 515  function get_oembed_response_data( $post, $width ) {
 516      $post  = get_post( $post );
 517      $width = absint( $width );
 518  
 519      if ( ! $post ) {
 520          return false;
 521      }
 522  
 523      if ( 'publish' !== get_post_status( $post ) ) {
 524          return false;
 525      }
 526  
 527      /**
 528       * Filters the allowed minimum and maximum widths for the oEmbed response.
 529       *
 530       * @since 4.4.0
 531       *
 532       * @param array $min_max_width {
 533       *     Minimum and maximum widths for the oEmbed response.
 534       *
 535       *     @type int $min Minimum width. Default 200.
 536       *     @type int $max Maximum width. Default 600.
 537       * }
 538       */
 539      $min_max_width = apply_filters(
 540          'oembed_min_max_width',
 541          array(
 542              'min' => 200,
 543              'max' => 600,
 544          )
 545      );
 546  
 547      $width  = min( max( $min_max_width['min'], $width ), $min_max_width['max'] );
 548      $height = max( ceil( $width / 16 * 9 ), 200 );
 549  
 550      $data = array(
 551          'version'       => '1.0',
 552          'provider_name' => get_bloginfo( 'name' ),
 553          'provider_url'  => get_home_url(),
 554          'author_name'   => get_bloginfo( 'name' ),
 555          'author_url'    => get_home_url(),
 556          'title'         => get_the_title( $post ),
 557          'type'          => 'link',
 558      );
 559  
 560      $author = get_userdata( $post->post_author );
 561  
 562      if ( $author ) {
 563          $data['author_name'] = $author->display_name;
 564          $data['author_url']  = get_author_posts_url( $author->ID );
 565      }
 566  
 567      /**
 568       * Filters the oEmbed response data.
 569       *
 570       * @since 4.4.0
 571       *
 572       * @param array   $data   The response data.
 573       * @param WP_Post $post   The post object.
 574       * @param int     $width  The requested width.
 575       * @param int     $height The calculated height.
 576       */
 577      return apply_filters( 'oembed_response_data', $data, $post, $width, $height );
 578  }
 579  
 580  
 581  /**
 582   * Retrieves the oEmbed response data for a given URL.
 583   *
 584   * @since 5.0.0
 585   *
 586   * @param string $url  The URL that should be inspected for discovery `<link>` tags.
 587   * @param array  $args oEmbed remote get arguments.
 588   * @return object|false oEmbed response data if the URL does belong to the current site. False otherwise.
 589   */
 590  function get_oembed_response_data_for_url( $url, $args ) {
 591      $switched_blog = false;
 592  
 593      if ( is_multisite() ) {
 594          $url_parts = wp_parse_args(
 595              wp_parse_url( $url ),
 596              array(
 597                  'host' => '',
 598                  'path' => '/',
 599              )
 600          );
 601  
 602          $qv = array(
 603              'domain'                 => $url_parts['host'],
 604              'path'                   => '/',
 605              'update_site_meta_cache' => false,
 606          );
 607  
 608          // In case of subdirectory configs, set the path.
 609          if ( ! is_subdomain_install() ) {
 610              $path = explode( '/', ltrim( $url_parts['path'], '/' ) );
 611              $path = reset( $path );
 612  
 613              if ( $path ) {
 614                  $qv['path'] = get_network()->path . $path . '/';
 615              }
 616          }
 617  
 618          $sites = get_sites( $qv );
 619          $site  = reset( $sites );
 620  
 621          // Do not allow embeds for deleted/archived/spam sites.
 622          if ( ! empty( $site->deleted ) || ! empty( $site->spam ) || ! empty( $site->archived ) ) {
 623              return false;
 624          }
 625  
 626          if ( $site && get_current_blog_id() !== (int) $site->blog_id ) {
 627              switch_to_blog( $site->blog_id );
 628              $switched_blog = true;
 629          }
 630      }
 631  
 632      $post_id = url_to_postid( $url );
 633  
 634      /** This filter is documented in wp-includes/class-wp-oembed-controller.php */
 635      $post_id = apply_filters( 'oembed_request_post_id', $post_id, $url );
 636  
 637      if ( ! $post_id ) {
 638          if ( $switched_blog ) {
 639              restore_current_blog();
 640          }
 641  
 642          return false;
 643      }
 644  
 645      $width = isset( $args['width'] ) ? $args['width'] : 0;
 646  
 647      $data = get_oembed_response_data( $post_id, $width );
 648  
 649      if ( $switched_blog ) {
 650          restore_current_blog();
 651      }
 652  
 653      return $data ? (object) $data : false;
 654  }
 655  
 656  
 657  /**
 658   * Filters the oEmbed response data to return an iframe embed code.
 659   *
 660   * @since 4.4.0
 661   *
 662   * @param array   $data   The response data.
 663   * @param WP_Post $post   The post object.
 664   * @param int     $width  The requested width.
 665   * @param int     $height The calculated height.
 666   * @return array The modified response data.
 667   */
 668  function get_oembed_response_data_rich( $data, $post, $width, $height ) {
 669      $data['width']  = absint( $width );
 670      $data['height'] = absint( $height );
 671      $data['type']   = 'rich';
 672      $data['html']   = get_post_embed_html( $width, $height, $post );
 673  
 674      // Add post thumbnail to response if available.
 675      $thumbnail_id = false;
 676  
 677      if ( has_post_thumbnail( $post->ID ) ) {
 678          $thumbnail_id = get_post_thumbnail_id( $post->ID );
 679      }
 680  
 681      if ( 'attachment' === get_post_type( $post ) ) {
 682          if ( wp_attachment_is_image( $post ) ) {
 683              $thumbnail_id = $post->ID;
 684          } elseif ( wp_attachment_is( 'video', $post ) ) {
 685              $thumbnail_id = get_post_thumbnail_id( $post );
 686              $data['type'] = 'video';
 687          }
 688      }
 689  
 690      if ( $thumbnail_id ) {
 691          list( $thumbnail_url, $thumbnail_width, $thumbnail_height ) = wp_get_attachment_image_src( $thumbnail_id, array( $width, 99999 ) );
 692          $data['thumbnail_url']                                      = $thumbnail_url;
 693          $data['thumbnail_width']                                    = $thumbnail_width;
 694          $data['thumbnail_height']                                   = $thumbnail_height;
 695      }
 696  
 697      return $data;
 698  }
 699  
 700  /**
 701   * Ensures that the specified format is either 'json' or 'xml'.
 702   *
 703   * @since 4.4.0
 704   *
 705   * @param string $format The oEmbed response format. Accepts 'json' or 'xml'.
 706   * @return string The format, either 'xml' or 'json'. Default 'json'.
 707   */
 708  function wp_oembed_ensure_format( $format ) {
 709      if ( ! in_array( $format, array( 'json', 'xml' ), true ) ) {
 710          return 'json';
 711      }
 712  
 713      return $format;
 714  }
 715  
 716  /**
 717   * Hooks into the REST API output to print XML instead of JSON.
 718   *
 719   * This is only done for the oEmbed API endpoint,
 720   * which supports both formats.
 721   *
 722   * @access private
 723   * @since 4.4.0
 724   *
 725   * @param bool                      $served  Whether the request has already been served.
 726   * @param WP_HTTP_ResponseInterface $result  Result to send to the client. Usually a WP_REST_Response.
 727   * @param WP_REST_Request           $request Request used to generate the response.
 728   * @param WP_REST_Server            $server  Server instance.
 729   * @return true
 730   */
 731  function _oembed_rest_pre_serve_request( $served, $result, $request, $server ) {
 732      $params = $request->get_params();
 733  
 734      if ( '/oembed/1.0/embed' !== $request->get_route() || 'GET' !== $request->get_method() ) {
 735          return $served;
 736      }
 737  
 738      if ( ! isset( $params['format'] ) || 'xml' !== $params['format'] ) {
 739          return $served;
 740      }
 741  
 742      // Embed links inside the request.
 743      $data = $server->response_to_data( $result, false );
 744  
 745      if ( ! class_exists( 'SimpleXMLElement' ) ) {
 746          status_header( 501 );
 747          die( get_status_header_desc( 501 ) );
 748      }
 749  
 750      $result = _oembed_create_xml( $data );
 751  
 752      // Bail if there's no XML.
 753      if ( ! $result ) {
 754          status_header( 501 );
 755          return get_status_header_desc( 501 );
 756      }
 757  
 758      if ( ! headers_sent() ) {
 759          $server->send_header( 'Content-Type', 'text/xml; charset=' . get_option( 'blog_charset' ) );
 760      }
 761  
 762      echo $result;
 763  
 764      return true;
 765  }
 766  
 767  /**
 768   * Creates an XML string from a given array.
 769   *
 770   * @since 4.4.0
 771   * @access private
 772   *
 773   * @param array            $data The original oEmbed response data.
 774   * @param SimpleXMLElement $node Optional. XML node to append the result to recursively.
 775   * @return string|false XML string on success, false on error.
 776   */
 777  function _oembed_create_xml( $data, $node = null ) {
 778      if ( ! is_array( $data ) || empty( $data ) ) {
 779          return false;
 780      }
 781  
 782      if ( null === $node ) {
 783          $node = new SimpleXMLElement( '<oembed></oembed>' );
 784      }
 785  
 786      foreach ( $data as $key => $value ) {
 787          if ( is_numeric( $key ) ) {
 788              $key = 'oembed';
 789          }
 790  
 791          if ( is_array( $value ) ) {
 792              $item = $node->addChild( $key );
 793              _oembed_create_xml( $value, $item );
 794          } else {
 795              $node->addChild( $key, esc_html( $value ) );
 796          }
 797      }
 798  
 799      return $node->asXML();
 800  }
 801  
 802  /**
 803   * Filters the given oEmbed HTML to make sure iframes have a title attribute.
 804   *
 805   * @since 5.2.0
 806   *
 807   * @param string $result The oEmbed HTML result.
 808   * @param object $data   A data object result from an oEmbed provider.
 809   * @param string $url    The URL of the content to be embedded.
 810   * @return string The filtered oEmbed result.
 811   */
 812  function wp_filter_oembed_iframe_title_attribute( $result, $data, $url ) {
 813      if ( false === $result || ! in_array( $data->type, array( 'rich', 'video' ), true ) ) {
 814          return $result;
 815      }
 816  
 817      $title = ! empty( $data->title ) ? $data->title : '';
 818  
 819      $pattern = '`<iframe([^>]*)>`i';
 820      if ( preg_match( $pattern, $result, $matches ) ) {
 821          $attrs = wp_kses_hair( $matches[1], wp_allowed_protocols() );
 822  
 823          foreach ( $attrs as $attr => $item ) {
 824              $lower_attr = strtolower( $attr );
 825              if ( $lower_attr === $attr ) {
 826                  continue;
 827              }
 828              if ( ! isset( $attrs[ $lower_attr ] ) ) {
 829                  $attrs[ $lower_attr ] = $item;
 830                  unset( $attrs[ $attr ] );
 831              }
 832          }
 833      }
 834  
 835      if ( ! empty( $attrs['title']['value'] ) ) {
 836          $title = $attrs['title']['value'];
 837      }
 838  
 839      /**
 840       * Filters the title attribute of the given oEmbed HTML iframe.
 841       *
 842       * @since 5.2.0
 843       *
 844       * @param string $title  The title attribute.
 845       * @param string $result The oEmbed HTML result.
 846       * @param object $data   A data object result from an oEmbed provider.
 847       * @param string $url    The URL of the content to be embedded.
 848       */
 849      $title = apply_filters( 'oembed_iframe_title_attribute', $title, $result, $data, $url );
 850  
 851      if ( '' === $title ) {
 852          return $result;
 853      }
 854  
 855      if ( isset( $attrs['title'] ) ) {
 856          unset( $attrs['title'] );
 857          $attr_string = implode( ' ', wp_list_pluck( $attrs, 'whole' ) );
 858          $result      = str_replace( $matches[0], '<iframe ' . trim( $attr_string ) . '>', $result );
 859      }
 860      return str_ireplace( '<iframe ', sprintf( '<iframe title="%s" ', esc_attr( $title ) ), $result );
 861  }
 862  
 863  
 864  /**
 865   * Filters the given oEmbed HTML.
 866   *
 867   * If the `$url` isn't on the trusted providers list,
 868   * we need to filter the HTML heavily for security.
 869   *
 870   * Only filters 'rich' and 'video' response types.
 871   *
 872   * @since 4.4.0
 873   *
 874   * @param string $result The oEmbed HTML result.
 875   * @param object $data   A data object result from an oEmbed provider.
 876   * @param string $url    The URL of the content to be embedded.
 877   * @return string The filtered and sanitized oEmbed result.
 878   */
 879  function wp_filter_oembed_result( $result, $data, $url ) {
 880      if ( false === $result || ! in_array( $data->type, array( 'rich', 'video' ), true ) ) {
 881          return $result;
 882      }
 883  
 884      $wp_oembed = _wp_oembed_get_object();
 885  
 886      // Don't modify the HTML for trusted providers.
 887      if ( false !== $wp_oembed->get_provider( $url, array( 'discover' => false ) ) ) {
 888          return $result;
 889      }
 890  
 891      $allowed_html = array(
 892          'a'          => array(
 893              'href' => true,
 894          ),
 895          'blockquote' => array(),
 896          'iframe'     => array(
 897              'src'          => true,
 898              'width'        => true,
 899              'height'       => true,
 900              'frameborder'  => true,
 901              'marginwidth'  => true,
 902              'marginheight' => true,
 903              'scrolling'    => true,
 904              'title'        => true,
 905          ),
 906      );
 907  
 908      $html = wp_kses( $result, $allowed_html );
 909  
 910      preg_match( '|(<blockquote>.*?</blockquote>)?.*(<iframe.*?></iframe>)|ms', $html, $content );
 911      // We require at least the iframe to exist.
 912      if ( empty( $content[2] ) ) {
 913          return false;
 914      }
 915      $html = $content[1] . $content[2];
 916  
 917      preg_match( '/ src=([\'"])(.*?)\1/', $html, $results );
 918  
 919      if ( ! empty( $results ) ) {
 920          $secret = wp_generate_password( 10, false );
 921  
 922          $url = esc_url( "{$results[2]}#?secret=$secret" );
 923          $q   = $results[1];
 924  
 925          $html = str_replace( $results[0], ' src=' . $q . $url . $q . ' data-secret=' . $q . $secret . $q, $html );
 926          $html = str_replace( '<blockquote', "<blockquote data-secret=\"$secret\"", $html );
 927      }
 928  
 929      $allowed_html['blockquote']['data-secret'] = true;
 930      $allowed_html['iframe']['data-secret']     = true;
 931  
 932      $html = wp_kses( $html, $allowed_html );
 933  
 934      if ( ! empty( $content[1] ) ) {
 935          // We have a blockquote to fall back on. Hide the iframe by default.
 936          $html = str_replace( '<iframe', '<iframe style="position: absolute; clip: rect(1px, 1px, 1px, 1px);"', $html );
 937          $html = str_replace( '<blockquote', '<blockquote class="wp-embedded-content"', $html );
 938      }
 939  
 940      $html = str_ireplace( '<iframe', '<iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted"', $html );
 941  
 942      return $html;
 943  }
 944  
 945  /**
 946   * Filters the string in the 'more' link displayed after a trimmed excerpt.
 947   *
 948   * Replaces '[...]' (appended to automatically generated excerpts) with an
 949   * ellipsis and a "Continue reading" link in the embed template.
 950   *
 951   * @since 4.4.0
 952   *
 953   * @param string $more_string Default 'more' string.
 954   * @return string 'Continue reading' link prepended with an ellipsis.
 955   */
 956  function wp_embed_excerpt_more( $more_string ) {
 957      if ( ! is_embed() ) {
 958          return $more_string;
 959      }
 960  
 961      $link = sprintf(
 962          '<a href="%1$s" class="wp-embed-more" target="_top">%2$s</a>',
 963          esc_url( get_permalink() ),
 964          /* translators: %s: Post title. */
 965          sprintf( __( 'Continue reading %s' ), '<span class="screen-reader-text">' . get_the_title() . '</span>' )
 966      );
 967      return ' &hellip; ' . $link;
 968  }
 969  
 970  /**
 971   * Displays the post excerpt for the embed template.
 972   *
 973   * Intended to be used in 'The Loop'.
 974   *
 975   * @since 4.4.0
 976   */
 977  function the_excerpt_embed() {
 978      $output = get_the_excerpt();
 979  
 980      /**
 981       * Filters the post excerpt for the embed template.
 982       *
 983       * @since 4.4.0
 984       *
 985       * @param string $output The current post excerpt.
 986       */
 987      echo apply_filters( 'the_excerpt_embed', $output );
 988  }
 989  
 990  /**
 991   * Filters the post excerpt for the embed template.
 992   *
 993   * Shows players for video and audio attachments.
 994   *
 995   * @since 4.4.0
 996   *
 997   * @param string $content The current post excerpt.
 998   * @return string The modified post excerpt.
 999   */
1000  function wp_embed_excerpt_attachment( $content ) {
1001      if ( is_attachment() ) {
1002          return prepend_attachment( '' );
1003      }
1004  
1005      return $content;
1006  }
1007  
1008  /**
1009   * Enqueues embed iframe default CSS and JS.
1010   *
1011   * Enqueue PNG fallback CSS for embed iframe for legacy versions of IE.
1012   *
1013   * Allows plugins to queue scripts for the embed iframe end using wp_enqueue_script().
1014   * Runs first in oembed_head().
1015   *
1016   * @since 4.4.0
1017   */
1018  function enqueue_embed_scripts() {
1019      wp_enqueue_style( 'wp-embed-template-ie' );
1020  
1021      /**
1022       * Fires when scripts and styles are enqueued for the embed iframe.
1023       *
1024       * @since 4.4.0
1025       */
1026      do_action( 'enqueue_embed_scripts' );
1027  }
1028  
1029  /**
1030   * Prints the CSS in the embed iframe header.
1031   *
1032   * @since 4.4.0
1033   */
1034  function print_embed_styles() {
1035      $type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/css"';
1036      ?>
1037      <style<?php echo $type_attr; ?>>
1038      <?php
1039      if ( SCRIPT_DEBUG ) {
1040          readfile( ABSPATH . WPINC . '/css/wp-embed-template.css' );
1041      } else {
1042          /*
1043           * If you're looking at a src version of this file, you'll see an "include"
1044           * statement below. This is used by the `npm run build` process to directly
1045           * include a minified version of wp-oembed-embed.css, instead of using the
1046           * readfile() method from above.
1047           *
1048           * If you're looking at a build version of this file, you'll see a string of
1049           * minified CSS. If you need to debug it, please turn on SCRIPT_DEBUG
1050           * and edit wp-embed-template.css directly.
1051           */
1052          ?>
1053              /*! This file is auto-generated */
1054              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:#82878c;background:#fff;border:1px solid #e5e5e5;box-shadow:0 1px 1px rgba(0,0,0,.05);overflow:auto;zoom:1}.wp-embed a{color:#82878c;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:#32373c}.wp-embed .wp-embed-more{color:#b4b9be}.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:#0073aa}.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:#222;background-color:rgba(10,10,10,.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 #5b9dd9,0 0 2px 1px rgba(30,140,190,.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:#aaa;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 #aaa}.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:#aaa}.wp-embed-share-input{box-sizing:border-box;width:100%;border:none;height:28px;margin:0 0 10px 0;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 #aaa}
1055          <?php
1056      }
1057      ?>
1058      </style>
1059      <?php
1060  }
1061  
1062  /**
1063   * Prints the JavaScript in the embed iframe header.
1064   *
1065   * @since 4.4.0
1066   */
1067  function print_embed_scripts() {
1068      $type_attr = current_theme_supports( 'html5', 'script' ) ? '' : ' type="text/javascript"';
1069      ?>
1070      <script<?php echo $type_attr; ?>>
1071      <?php
1072      if ( SCRIPT_DEBUG ) {
1073          readfile( ABSPATH . WPINC . '/js/wp-embed-template.js' );
1074      } else {
1075          /*
1076           * If you're looking at a src version of this file, you'll see an "include"
1077           * statement below. This is used by the `npm run build` process to directly
1078           * include a minified version of wp-embed-template.js, instead of using the
1079           * readfile() method from above.
1080           *
1081           * If you're looking at a build version of this file, you'll see a string of
1082           * minified JavaScript. If you need to debug it, please turn on SCRIPT_DEBUG
1083           * and edit wp-embed-template.js directly.
1084           */
1085          ?>
1086              /*! This file is auto-generated */
1087              !function(u,c){"use strict";var r,t,e,n=c.querySelector&&u.addEventListener,f=!1;function b(e,t){u.parent.postMessage({message:e,value:t,secret:r},"*")}function i(){if(!f){f=!0;var e,t=c.querySelector(".wp-embed-share-dialog"),r=c.querySelector(".wp-embed-share-dialog-open"),n=c.querySelector(".wp-embed-share-dialog-close"),i=c.querySelectorAll(".wp-embed-share-input"),a=c.querySelectorAll(".wp-embed-share-tab-button button"),o=c.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(r&&r.addEventListener("click",function(){t.className=t.className.replace("hidden",""),c.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);c.addEventListener("keydown",function(e){27===e.keyCode&&-1===t.className.indexOf("hidden")?l():9===e.keyCode&&function(e){var t=c.querySelector('.wp-embed-share-tab-button [aria-selected="true"]');n!==e.target||e.shiftKey?t===e.target&&e.shiftKey&&(n.focus(),e.preventDefault()):(t.focus(),e.preventDefault())}(e)},!1),u.self!==u.top&&(b("height",Math.ceil(c.body.getBoundingClientRect().height)),o&&o.addEventListener("load",function(){b("height",Math.ceil(c.body.getBoundingClientRect().height))}),c.addEventListener("click",function(e){var t,r=e.target;t=r.hasAttribute("href")?r.getAttribute("href"):r.parentElement.getAttribute("href"),event.altKey||event.ctrlKey||event.metaKey||event.shiftKey||t&&(b("link",t),e.preventDefault())}))}function l(){t.className+=" hidden",c.querySelector(".wp-embed-share-dialog-open").focus()}function s(e){var t=c.querySelector('.wp-embed-share-tab-button [aria-selected="true"]');t.setAttribute("aria-selected","false"),c.querySelector("#"+t.getAttribute("aria-controls")).setAttribute("aria-hidden","true"),e.target.setAttribute("aria-selected","true"),c.querySelector("#"+e.target.getAttribute("aria-controls")).setAttribute("aria-hidden","false")}function d(e){var t,r,n=e.target,i=n.parentElement.previousElementSibling,a=n.parentElement.nextElementSibling;if(37===e.keyCode)t=i;else{if(39!==e.keyCode)return!1;t=a}"rtl"===c.documentElement.getAttribute("dir")&&(t=t===i?a:i),t&&(r=t.firstElementChild,n.setAttribute("tabindex","-1"),n.setAttribute("aria-selected",!1),c.querySelector("#"+n.getAttribute("aria-controls")).setAttribute("aria-hidden","true"),r.setAttribute("tabindex","0"),r.setAttribute("aria-selected","true"),r.focus(),c.querySelector("#"+r.getAttribute("aria-controls")).setAttribute("aria-hidden","false"))}}n&&(!function e(){u.self===u.top||r||(r=u.location.hash.replace(/.*secret=([\d\w]{10}).*/,"$1"),clearTimeout(t),t=setTimeout(function(){e()},100))}(),c.documentElement.className=c.documentElement.className.replace(/\bno-js\b/,"")+" js",c.addEventListener("DOMContentLoaded",i,!1),u.addEventListener("load",i,!1),u.addEventListener("resize",function(){u.self!==u.top&&(clearTimeout(e),e=setTimeout(function(){b("height",Math.ceil(c.body.getBoundingClientRect().height))},100))},!1))}(window,document);
1088          <?php
1089      }
1090      ?>
1091      </script>
1092      <?php
1093  }
1094  
1095  /**
1096   * Prepare the oembed HTML to be displayed in an RSS feed.
1097   *
1098   * @since 4.4.0
1099   * @access private
1100   *
1101   * @param string $content The content to filter.
1102   * @return string The filtered content.
1103   */
1104  function _oembed_filter_feed_content( $content ) {
1105      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 );
1106  }
1107  
1108  /**
1109   * Prints the necessary markup for the embed comments button.
1110   *
1111   * @since 4.4.0
1112   */
1113  function print_embed_comments_button() {
1114      if ( is_404() || ! ( get_comments_number() || comments_open() ) ) {
1115          return;
1116      }
1117      ?>
1118      <div class="wp-embed-comments">
1119          <a href="<?php comments_link(); ?>" target="_top">
1120              <span class="dashicons dashicons-admin-comments"></span>
1121              <?php
1122              printf(
1123                  /* translators: %s: Number of comments. */
1124                  _n(
1125                      '%s <span class="screen-reader-text">Comment</span>',
1126                      '%s <span class="screen-reader-text">Comments</span>',
1127                      get_comments_number()
1128                  ),
1129                  number_format_i18n( get_comments_number() )
1130              );
1131              ?>
1132          </a>
1133      </div>
1134      <?php
1135  }
1136  
1137  /**
1138   * Prints the necessary markup for the embed sharing button.
1139   *
1140   * @since 4.4.0
1141   */
1142  function print_embed_sharing_button() {
1143      if ( is_404() ) {
1144          return;
1145      }
1146      ?>
1147      <div class="wp-embed-share">
1148          <button type="button" class="wp-embed-share-dialog-open" aria-label="<?php esc_attr_e( 'Open sharing dialog' ); ?>">
1149              <span class="dashicons dashicons-share"></span>
1150          </button>
1151      </div>
1152      <?php
1153  }
1154  
1155  /**
1156   * Prints the necessary markup for the embed sharing dialog.
1157   *
1158   * @since 4.4.0
1159   */
1160  function print_embed_sharing_dialog() {
1161      if ( is_404() ) {
1162          return;
1163      }
1164      ?>
1165      <div class="wp-embed-share-dialog hidden" role="dialog" aria-label="<?php esc_attr_e( 'Sharing options' ); ?>">
1166          <div class="wp-embed-share-dialog-content">
1167              <div class="wp-embed-share-dialog-text">
1168                  <ul class="wp-embed-share-tabs" role="tablist">
1169                      <li class="wp-embed-share-tab-button wp-embed-share-tab-button-wordpress" role="presentation">
1170                          <button type="button" role="tab" aria-controls="wp-embed-share-tab-wordpress" aria-selected="true" tabindex="0"><?php esc_html_e( 'WordPress Embed' ); ?></button>
1171                      </li>
1172                      <li class="wp-embed-share-tab-button wp-embed-share-tab-button-html" role="presentation">
1173                          <button type="button" role="tab" aria-controls="wp-embed-share-tab-html" aria-selected="false" tabindex="-1"><?php esc_html_e( 'HTML Embed' ); ?></button>
1174                      </li>
1175                  </ul>
1176                  <div id="wp-embed-share-tab-wordpress" class="wp-embed-share-tab" role="tabpanel" aria-hidden="false">
1177                      <input type="text" value="<?php the_permalink(); ?>" class="wp-embed-share-input" aria-describedby="wp-embed-share-description-wordpress" tabindex="0" readonly/>
1178  
1179                      <p class="wp-embed-share-description" id="wp-embed-share-description-wordpress">
1180                          <?php _e( 'Copy and paste this URL into your WordPress site to embed' ); ?>
1181                      </p>
1182                  </div>
1183                  <div id="wp-embed-share-tab-html" class="wp-embed-share-tab" role="tabpanel" aria-hidden="true">
1184                      <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>
1185  
1186                      <p class="wp-embed-share-description" id="wp-embed-share-description-html">
1187                          <?php _e( 'Copy and paste this code into your site to embed' ); ?>
1188                      </p>
1189                  </div>
1190              </div>
1191  
1192              <button type="button" class="wp-embed-share-dialog-close" aria-label="<?php esc_attr_e( 'Close sharing dialog' ); ?>">
1193                  <span class="dashicons dashicons-no"></span>
1194              </button>
1195          </div>
1196      </div>
1197      <?php
1198  }
1199  
1200  /**
1201   * Prints the necessary markup for the site title in an embed template.
1202   *
1203   * @since 4.5.0
1204   */
1205  function the_embed_site_title() {
1206      $site_title = sprintf(
1207          '<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>',
1208          esc_url( home_url() ),
1209          esc_url( get_site_icon_url( 32, includes_url( 'images/w-logo-blue.png' ) ) ),
1210          esc_url( get_site_icon_url( 64, includes_url( 'images/w-logo-blue.png' ) ) ),
1211          esc_html( get_bloginfo( 'name' ) )
1212      );
1213  
1214      $site_title = '<div class="wp-embed-site-title">' . $site_title . '</div>';
1215  
1216      /**
1217       * Filters the site title HTML in the embed footer.
1218       *
1219       * @since 4.4.0
1220       *
1221       * @param string $site_title The site title HTML.
1222       */
1223      echo apply_filters( 'embed_site_title_html', $site_title );
1224  }
1225  
1226  /**
1227   * Filters the oEmbed result before any HTTP requests are made.
1228   *
1229   * If the URL belongs to the current site, the result is fetched directly instead of
1230   * going through the oEmbed discovery process.
1231   *
1232   * @since 4.5.3
1233   *
1234   * @param null|string $result The UNSANITIZED (and potentially unsafe) HTML that should be used to embed. Default null.
1235   * @param string      $url    The URL that should be inspected for discovery `<link>` tags.
1236   * @param array       $args   oEmbed remote get arguments.
1237   * @return null|string The UNSANITIZED (and potentially unsafe) HTML that should be used to embed.
1238   *                     Null if the URL does not belong to the current site.
1239   */
1240  function wp_filter_pre_oembed_result( $result, $url, $args ) {
1241      $data = get_oembed_response_data_for_url( $url, $args );
1242  
1243      if ( $data ) {
1244          return _wp_oembed_get_object()->data2html( $data, $url );
1245      }
1246  
1247      return $result;
1248  }


Generated: Thu Dec 3 01:00:04 2020 Cross-referenced by PHPXref 0.7.1