]*>(.*)<\/h[3,4,5,6]>/sU', '

$1

', $content ); return $content; } function ampforwp_fbia_address_tag($content){ $content = preg_replace( '/]*>(.*)<\/address>/sU', '

$1

', $content ); return $content; } function ampforwp_fbia_filter_dom($content){ $DOMDocument = ampforwp_fbia_get_content_DOM($content); $DOMDocument = apply_filters("ampforwp_fbia_content_dom", $DOMDocument); $content = ampforwp_fbia_get_content_from_DOM($DOMDocument); return $content; } function ampforwp_ia_modify_gutenburg_gallery($content){ $allMatches = preg_replace_callback('/(.*?)<\/ul>/', function($matches) { return '
'.$matches[3].'
'; }, $content); $fbiagallery = preg_replace_callback('/
<\/figure><\/li>/', function($match) { return '
'; }, $allMatches); return $fbiagallery; } function ampforwp_gallery_shortcode_markup_modify( $output, $attr, $instance ){ global $wp; $post = get_post(ampforwp_get_the_ID()); if ( is_feed() && isset($wp->query_vars['feed']) && 'instant_articles' == $wp->query_vars['feed'] ) { $atts = shortcode_atts( array( 'order' => 'ASC', 'orderby' => 'menu_order ID', 'id' => $post ? $post->ID : 0, 'itemtag' => 'figure', 'icontag' => 'div', 'captiontag' => 'figcaption', 'columns' => 3, 'size' => 'thumbnail', 'include' => '', 'exclude' => '', 'link' => '' ), $attr, 'gallery' ); if ( ! empty( $atts['include'] ) ) { $_attachments = get_posts( array( 'include' => $atts['include'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) ); $attachments = array(); foreach ( $_attachments as $key => $val ) { $attachments[$val->ID] = $_attachments[$key]; } } elseif ( ! empty( $atts['exclude'] ) ) { $attachments = get_children( array( 'post_parent' => $id, 'exclude' => $atts['exclude'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) ); } else { $attachments = get_children( array( 'post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) ); } if ( empty( $attachments ) ) { return ''; } // Build the gallery html output $output = "
"; // Iterate over the available images $i = 0; foreach ( $attachments as $id => $attachment ) { $attr = ( trim( $attachment->post_excerpt ) ) ? array( 'aria-describedby' => "gallery-$id" ) : ''; $image_output = wp_get_attachment_image( $id, "full", false, $attr ); $image_meta = wp_get_attachment_metadata( $id ); $orientation = ''; if ( isset( $image_meta['height'], $image_meta['width'] ) ) { $orientation = ( $image_meta['height'] > $image_meta['width'] ) ? 'portrait' : 'landscape'; } $output .= "
"; $output .= $image_output; if ( trim($attachment->post_excerpt) ) { // $output .= " //
// " . wptexturize($attachment->post_excerpt) . " //
"; } $output .= "
"; } $output .= "
"; return $output; } return $output; } function ampforwp_fbia_get_content_DOM($content){ $libxml_previous_state = libxml_use_internal_errors( true ); $DOMDocument = new DOMDocument( '1.0', get_option( 'blog_charset' ) ); // DOMDocument isn’t handling encodings too well, so let’s help it a little if ( function_exists( 'mb_convert_encoding' ) ) { $content = mb_convert_encoding( $content, 'HTML-ENTITIES', get_option( 'blog_charset' ) ); } $result = $DOMDocument->loadHTML( '' . utf8_decode( $content ) . '' ); libxml_clear_errors(); libxml_use_internal_errors( $libxml_previous_state ); return $DOMDocument; } function ampforwp_fbia_get_content_from_DOM($DOMDocument){ $body = $DOMDocument->getElementsByTagName( 'body' )->item( 0 ); $filtered_content = ''; foreach ( $body->childNodes as $node ) { if ( method_exists( $DOMDocument, 'saveHTML' ) && version_compare(phpversion(), '5.3.6', '>=') ) { $filtered_content .= $DOMDocument->saveHTML( $node );// Requires PHP 5.3.6 } else { $temp_content = $DOMDocument->saveXML( $node ); $iframe_pattern = "#]+)/>#is"; // self-closing iframe element $temp_content = preg_replace( $iframe_pattern, "", $temp_content ); $filtered_content .= $temp_content; } } //Instagram embeds are not loading on the Facebook instance Article #5066 if (preg_match('/
(.*?)<\/blockquote><\/iframe><\/figure>(.*?)<\/script>/s', '
$2
$3', $filtered_content ); } return $filtered_content; } function ampforwp_fbia_list_items_with_content($DOMDocument){ // A set of inline tags, that are allowed within the li element $allowed_tags = array( "p", "b", "u", "i", "em", "span", "strong", "#text", "a" ); // Find all the list items $elements = $DOMDocument->getElementsByTagName( 'li' ); // Iterate over all the list items for ( $i = 0; $i < $elements->length; ++$i ) { $element = $elements->item( $i ); // If the list item has more than one child node, we might get a conflict, so wrap if($element->childNodes->length > 1){ // Iterate over all child nodes for ( $n = 0; $n < $element->childNodes->length; ++$n ) { $childNode = $element->childNodes->item($n); // If this child node is not one of the allowed tags remove from the DOM tree if(!in_array($childNode->nodeName, $allowed_tags)){ $element->removeChild($childNode); } } } } return $DOMDocument; } function ampforwp_fbia_validate_images($DOMDocument){ // Find all the image items $elements = $DOMDocument->getElementsByTagName( 'img' ); // Iterate over all the list items for ( $i = 0; $i < $elements->length; ++$i ) { $element = $elements->item( $i ); if($element->parentNode->nodeName == "figure"){ // This element is already wrapped in a figure tag, we only need to make sure it's placed right $element = $element->parentNode; if ( ampforwp_get_setting('fb-instant-feedback') ) { $element->setAttribute( 'data-feedback', 'fb:likes, fb:comments' ); } if ( 'figure' == $element->parentNode->nodeName && 'op-slideshow' == $element->parentNode->getAttribute('class') ) { return $DOMDocument; } } else { // Wrap this image into a figure tag $figure = $DOMDocument->createElement('figure'); $element->parentNode->replaceChild($figure, $element); $figure->appendChild($element); // Let's continue working with the figure tag $element = $figure; } if ( ampforwp_get_setting('fb-instant-feedback') ) { $element->setAttribute( 'data-feedback', 'fb:likes, fb:comments' ); } if($element->parentNode->nodeName != "body"){ // Let's find the highest container if it does not reside in the body already $highestParent = $element->parentNode; while($highestParent->parentNode->nodeName != "body"){ $highestParent = $highestParent->parentNode; } // Insert the figure tag before the highest parent which is not the body tag $highestParent->parentNode->insertBefore($element, $highestParent); } } return $DOMDocument; } function ampforwp_fbia_resize_images($DOMDocument){ $default_image_size = apply_filters('fbia_default_image_size', 'full'); // Find all the images $elements = $DOMDocument->getElementsByTagName( 'img' ); // Iterate over all the list items for ( $i = 0; $i < $elements->length; ++$i ) { $image = $elements->item( $i ); // Find the "wp-image" class, as it is a safe indicator for WP images and delivers the attachment ID if(preg_match("/.*wp-image-(\d*).*/", $image->getAttribute("class"), $matches)){ if($matches[1]){ $id = intval($matches[1]); // Find the attachment for the ID $desired_size = wp_get_attachment_image_src($id, $default_image_size); // If we have a valid attachment we change the attributes if($desired_size){ $image->setAttribute("src", $desired_size[0]); $image->setAttribute("width", $desired_size[1]); $image->setAttribute("height", $desired_size[2]); } } } } return $DOMDocument; } function ampforwp_fbia_no_empty_p_tags($DOMDocument){ $allowed_tags = array( "p", "b", "u", "i", "em", "span", "strong", "#text", "a" ); // Find all the paragraph items $elements = $DOMDocument->getElementsByTagName( 'p' ); // Iterate over all the paragraph items for ( $i = 0; $i < $elements->length; ++$i ) { $element = $elements->item( $i ); if($element->childNodes->length == 0){ // This element is empty like

$element->parentNode->removeChild($element); } elseif( $element->childNodes->length >= 1 ) { // This element actually has children, let's see if it has text $elementHasText = false; // Iterate over all child nodes for ( $n = 0; $n < $element->childNodes->length; ++$n ) { $childNode = $element->childNodes->item($n); if(in_array($childNode->nodeName, $allowed_tags)){ // If the child node has text, check if it is empty text // isset($childNode->childNodes->length) || !isset($childNode->nodeValue) || trim($childNode->nodeValue,chr(0xC2).chr(0xA0)) == false if( (!isset($childNode->childNodes) || $childNode->childNodes->length == 0) && (isset($childNode->nodeValue) && !trim($childNode->nodeValue,chr(0xC2).chr(0xA0)))){ // this node is empty $element->removeChild($childNode); } else { $elementHasText = true; } } } if(!$elementHasText){ // The element has child nodes, but no text $fragment = $DOMDocument->createDocumentFragment(); // move all child nodes into a fragment while($element->hasChildNodes()){ $fragment->appendChild( $element->childNodes->item( 0 ) ); } // replace the (now empty) p tag with the fragment $element->parentNode->replaceChild($fragment, $element); } } } return $DOMDocument; } function ampforwp_fbia_wrap_elements( $DOMDocument ){ $figure_object = $DOMDocument->createElement( 'figure' ); $figure_object->setAttribute( 'class', 'op-interactive' ); // The elements to wrap. $elements_to_wrap = array( 'iframe', 'table' ); foreach ( $elements_to_wrap as $element_to_wrap ) { foreach ( $elements = $DOMDocument->getElementsByTagName( $element_to_wrap ) as $element ) { if ( 'figure' !== $element->parentNode->tagName ) { $figure_template = clone $figure_object; $element->parentNode->replaceChild( $figure_template, $element ); $figure_template->appendChild( $element ); } } } return $DOMDocument; } // Video Element function ampforwp_fbia_video_element( $DOMDocument ){ $video_elements = $DOMDocument->getElementsByTagName( 'video' ); // Iterate over all the video items for ( $i = 0; $i < $video_elements->length; ++$i ) { $video = $video_elements->item( $i ); if($video->parentNode->nodeName == "figure"){ // This element is already wrapped in a figure tag, we only need to make sure it's placed right $video = $video->parentNode; } else { // Wrap this video into a figure tag $figure = $DOMDocument->createElement('figure'); $video->parentNode->replaceChild($figure, $video); $figure->appendChild($video); $video = $figure; } if ( ampforwp_get_setting('fb-instant-feedback') ) { $video->setAttribute( 'data-feedback', 'fb:likes, fb:comments' ); } } return $DOMDocument; } // Embeds Sanitizer function ampforwp_fbia_wrap_embed_elements( $DOMDocument ) { $figure_object = $DOMDocument->createElement( 'figure' ); $figure_object->setAttribute( 'class', 'op-interactive' ); $iframe_object = $DOMDocument->createElement( 'iframe' ); $body = $DOMDocument->getElementsByTagName( 'body' )->item( 0 ); $xpath = new DOMXPath($DOMDocument); // Instagram $class_name = 'instagram-media'; $blockquotes = $xpath->query("//*[contains(@class,'$class_name')]"); foreach($blockquotes as $instagram_media){ if ( 'iframe' !== $instagram_media->parentNode->tagName ) { $iframe = clone $iframe_object; $instagram_media->parentNode->replaceChild( $iframe, $instagram_media ); $iframe->appendChild( $instagram_media ); if ( 'figure' !== $iframe->parentNode->tagName ) { $figure_template = clone $figure_object; $iframe->parentNode->replaceChild( $figure_template, $iframe ); $figure_template->appendChild( $iframe ); } } } return $DOMDocument; } function ampforwp_get_ia_placement_id(){ global $redux_builder_amp; $instant_article_ad_id = $redux_builder_amp['fb-instant-article-ad-id']; return $instant_article_ad_id; } function ampforwp_get_ia_ad_density(){ global $redux_builder_amp; $instant_article_ad_density = $redux_builder_amp['fb-instant-article-ad-density-setup']; return $instant_article_ad_density; } function ampforwp_get_ia_analytics_code(){ global $redux_builder_amp; $instant_article_analytics_code = $redux_builder_amp['fb-instant-article-analytics-code']; return $instant_article_analytics_code; }