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wp-content/plugins/jetpack/extensions/blocks/gif/gif.php

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+<?php
+/**
+ * GIF Block.
+ *
+ * @since 7.0.0
+ *
+ * @package automattic/jetpack
+ */
+
+namespace Automattic\Jetpack\Extensions\Gif;
+
+use Automattic\Jetpack\Blocks;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit( 0 );
+}
+
+/**
+ * Registers the block for use in Gutenberg
+ * This is done via an action so that we can disable
+ * registration if we need to.
+ */
+function register_block() {
+	Blocks::jetpack_register_block(
+		__DIR__,
+		array( 'render_callback' => __NAMESPACE__ . '\render_block' )
+	);
+}
+add_action( 'init', __NAMESPACE__ . '\register_block' );
+
+/**
+ * Gif block registration/dependency declaration.
+ *
+ * The render implementation lives in render.php and is only loaded when the
+ * block is actually rendered, keeping it out of the eager front-end path.
+ *
+ * @param array $attr - Array containing the gif block attributes.
+ *
+ * @return string
+ */
+function render_block( $attr ) {
+	require_once __DIR__ . '/render.php';
+	return render_implementation( $attr );
+}

wp-content/plugins/jetpack/extensions/blocks/gif/render.php

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+<?php
+/**
+ * Gif block render implementation.
+ *
+ * Loaded lazily from gif.php only when the block is rendered, to keep
+ * the render body out of the eager front-end PHP/opcache footprint.
+ *
+ * @package automattic/jetpack
+ */
+
+namespace Automattic\Jetpack\Extensions\Gif;
+
+use Automattic\Jetpack\Blocks;
+use Jetpack_Gutenberg;
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit( 0 );
+}
+
+/**
+ * Dynamic rendering of the block.
+ *
+ * @param array $attr - Array containing the gif block attributes.
+ *
+ * @return string
+ */
+function render_implementation( $attr ) {
+	$padding_top = $attr['paddingTop'] ?? 0;
+	$style       = 'padding-top:' . $padding_top;
+	$giphy_url   = isset( $attr['giphyUrl'] )
+		? Jetpack_Gutenberg::validate_block_embed_url( $attr['giphyUrl'], array( 'giphy.com' ) )
+		: null;
+	$search_text = $attr['searchText'] ?? '';
+	$caption     = $attr['caption'] ?? null;
+
+	if ( ! $giphy_url ) {
+		return null;
+	}
+
+	$classes = Blocks::classes( Blocks::get_block_feature( __DIR__ ), $attr );
+
+	$placeholder = sprintf( '<a href="%s">%s</a>', esc_url( $giphy_url ), esc_attr( $search_text ) );
+
+	ob_start();
+	?>
+	<div class="<?php echo esc_attr( $classes ); ?>">
+		<figure>
+			<?php if ( Blocks::is_amp_request() ) : ?>
+				<amp-iframe src="<?php echo esc_url( $giphy_url ); ?>" width="100" height="<?php echo absint( $padding_top ); ?>" sandbox="allow-scripts allow-same-origin" layout="responsive">
+					<div placeholder>
+						<?php echo wp_kses_post( $placeholder ); ?>
+					</div>
+				</amp-iframe>
+			<?php else : ?>
+				<div class="wp-block-jetpack-gif-wrapper" style="<?php echo esc_attr( $style ); ?>">
+					<iframe src="<?php echo esc_url( $giphy_url ); ?>" title="<?php echo esc_attr( $search_text ); ?>"></iframe>
+				</div>
+			<?php endif; ?>
+			<?php if ( $caption ) : ?>
+				<figcaption class="wp-block-jetpack-gif-caption gallery-caption"><?php echo wp_kses_post( $caption ); ?></figcaption>
+			<?php endif; ?>
+		</figure>
+	</div>
+	<?php
+	$html = ob_get_clean();
+
+	Jetpack_Gutenberg::load_assets_as_required( __DIR__ );
+
+	return $html;
+}