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wp-content/plugins/jetpack/modules/sitemaps/sitemap-buffer-factory.php

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+<?php // phpcs:ignore WordPress.Files.FileName.InvalidClassFileName
+/**
+ * Factory class for creating sitemap buffers.
+ *
+ * @since 14.6
+ * @package automattic/jetpack
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit( 0 );
+}
+
+/**
+ * Creates the appropriate sitemap buffer based on available PHP extensions.
+ *
+ * @since 14.6
+ */
+class Jetpack_Sitemap_Buffer_Factory {
+
+	/**
+	 * Create a new sitemap buffer instance.
+	 *
+	 * @since 14.6
+	 *
+	 * @param string $type       The type of sitemap buffer ('page', 'image', 'video', etc.).
+	 * @param int    $item_limit The maximum number of items in the buffer.
+	 * @param int    $byte_limit The maximum number of bytes in the buffer.
+	 * @param string $time       The initial datetime of the buffer.
+	 *
+	 * @return Jetpack_Sitemap_Buffer|null The created buffer or null if type is invalid.
+	 */
+	public static function create( $type, $item_limit, $byte_limit, $time = '1970-01-01 00:00:00' ) {
+
+		/**
+		 * Hook to allow for XMLWriter usage.
+		 *
+		 * Temporary filter to disallow XMLWriter usage.
+		 *
+		 * @since 14.7
+		 * @since 15.2 Update default to true.
+		 * @module sitemaps
+		 *
+		 * @param bool $use_xmlwriter Whether to use XMLWriter. Current default is true.
+		 */
+		$use_xmlwriter = apply_filters( 'jetpack_sitemap_use_xmlwriter', true );
+
+		// First try XMLWriter if available
+		if ( $use_xmlwriter && class_exists( 'XMLWriter' ) ) {
+			$class_name = 'Jetpack_Sitemap_Buffer_' . ucfirst( $type ) . '_XMLWriter';
+			if ( class_exists( $class_name ) ) {
+				return new $class_name( $item_limit, $byte_limit, $time );
+			}
+		}
+
+		// Then try DOMDocument
+		if ( class_exists( 'DOMDocument' ) ) {
+			$class_name = 'Jetpack_Sitemap_Buffer_' . ucfirst( $type );
+			if ( class_exists( $class_name ) ) {
+				return new $class_name( $item_limit, $byte_limit, $time );
+			}
+		}
+
+		// Finally fall back to the basic implementation
+		$class_name = 'Jetpack_Sitemap_Buffer_' . ucfirst( $type ) . '_Fallback';
+		if ( class_exists( $class_name ) ) {
+			return new $class_name( $item_limit, $byte_limit, $time );
+		}
+
+		return null;
+	}
+}