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<?php |
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3
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require_once( AMP__ROOT__ . '/includes/sanitizers/class-amp-base-sanitizer.php' ); |
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4
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5
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class AMP_Audio_Sanitizer extends AMP_Base_Sanitizer { |
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public static $tag = 'audio'; |
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private static $script_slug = 'amp-audio'; |
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private static $script_src = 'https://cdn.ampproject.org/v0/amp-audio-0.1.js'; |
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public function get_scripts() { |
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if ( ! $this->did_convert_elements ) { |
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return array(); |
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} |
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return array( self::$script_slug => self::$script_src ); |
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} |
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public function sanitize() { |
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$nodes = $this->dom->getElementsByTagName( self::$tag ); |
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$num_nodes = $nodes->length; |
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if ( 0 === $num_nodes ) { |
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return; |
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} |
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for ( $i = $num_nodes - 1; $i >= 0; $i-- ) { |
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$node = $nodes->item( $i ); |
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$old_attributes = AMP_DOM_Utils::get_node_attributes_as_assoc_array( $node ); |
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$new_attributes = $this->filter_attributes( $old_attributes ); |
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$new_node = AMP_DOM_Utils::create_node( $this->dom, 'amp-audio', $new_attributes ); |
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// TODO: `source` does not have closing tag, and DOMDocument doesn't handle it well. |
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35
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View Code Duplication |
foreach ( $node->childNodes as $child_node ) { |
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$new_child_node = $child_node->cloneNode( true ); |
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$old_child_attributes = AMP_DOM_Utils::get_node_attributes_as_assoc_array( $new_child_node ); |
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$new_child_attributes = $this->filter_attributes( $old_child_attributes ); |
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// Only append source tags with a valid src attribute |
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if ( ! empty( $new_child_attributes['src'] ) && 'source' === $new_child_node->tagName ) { |
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$new_node->appendChild( $new_child_node ); |
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} |
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} |
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// If the node has at least one valid source, replace the old node with it. |
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// Otherwise, just remove the node. |
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// |
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// TODO: Add a fallback handler. |
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// See: https://github.com/ampproject/amphtml/issues/2261 |
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View Code Duplication |
if ( 0 === $new_node->childNodes->length && empty( $new_attributes['src'] ) ) { |
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$node->parentNode->removeChild( $node ); |
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} else { |
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$node->parentNode->replaceChild( $new_node, $node ); |
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} |
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$this->did_convert_elements = true; |
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} |
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} |
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private function filter_attributes( $attributes ) { |
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$out = array(); |
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foreach ( $attributes as $name => $value ) { |
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switch ( $name ) { |
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case 'src': |
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$out[ $name ] = $this->maybe_enforce_https_src( $value ); |
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break; |
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case 'width': |
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case 'height': |
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$out[ $name ] = $this->sanitize_dimension( $value, $name ); |
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break; |
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case 'class': |
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$out[ $name ] = $value; |
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break; |
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case 'loop': |
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case 'muted': |
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case 'autoplay': |
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if ( 'false' !== $value ) { |
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$out[ $name ] = ''; |
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} |
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break; |
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default; |
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break; |
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} |
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} |
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return $out; |
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} |
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} |
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Automattic /
jetpack
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