installed plugin W3 Total Cache version 2.3.2

wp-content/plugins/w3-total-cache/CdnEngine.php

@@ -0,0 +1,104 @@
+<?php
+namespace W3TC;
+
+/**
+ * class CdnEngine
+ */
+class CdnEngine {
+	/**
+	 * Returns CdnEngine_Base instance
+	 *
+	 * @param string  $engine
+	 * @param array   $config
+	 * @return CdnEngine_Base
+	 */
+	static function instance( $engine, $config = array() ) {
+		static $instances = array();
+
+		$instance_key = sprintf( '%s_%s', $engine, md5( serialize( $config ) ) );
+
+		if ( !isset( $instances[$instance_key] ) ) {
+			switch ( $engine ) {
+			case 'akamai':
+				$instances[$instance_key] = new CdnEngine_Mirror_Akamai( $config );
+				break;
+
+			case 'att':
+				$instances[$instance_key] = new CdnEngine_Mirror_Att( $config );
+				break;
+
+			case 'azure':
+				$instances[$instance_key] = new CdnEngine_Azure( $config );
+				break;
+
+			case 'cf':
+				$instances[$instance_key] = new CdnEngine_CloudFront( $config );
+				break;
+
+			case 'cf2':
+				$instances[$instance_key] = new CdnEngine_Mirror_CloudFront( $config );
+				break;
+
+			case 'cotendo':
+				$instances[$instance_key] = new CdnEngine_Mirror_Cotendo( $config );
+				break;
+
+			case 'edgecast':
+				$instances[$instance_key] = new CdnEngine_Mirror_Edgecast( $config );
+				break;
+
+			case 'ftp':
+				$instances[$instance_key] = new CdnEngine_Ftp( $config );
+				break;
+
+			case 'google_drive':
+				$instances[$instance_key] = new CdnEngine_GoogleDrive( $config );
+				break;
+
+			case 'highwinds':
+				$instances[$instance_key] = new CdnEngine_Mirror_Highwinds( $config );
+				break;
+
+			case 'limelight':
+				$instances[$instance_key] = new CdnEngine_Mirror_LimeLight( $config );
+				break;
+
+			case 'mirror':
+				$instances[$instance_key] = new CdnEngine_Mirror( $config );
+				break;
+
+			case 'rackspace_cdn':
+				$instances[$instance_key] = new CdnEngine_Mirror_RackSpaceCdn( $config );
+				break;
+
+			case 'rscf':
+				$instances[$instance_key] =
+					new CdnEngine_RackSpaceCloudFiles( $config );
+				break;
+
+			case 's3':
+				$instances[$instance_key] = new CdnEngine_S3( $config );
+				break;
+
+			case 's3_compatible':
+				$instances[$instance_key] = new CdnEngine_S3_Compatible( $config );
+				break;
+
+			case 'stackpath':
+				$instances[$instance_key] = new CdnEngine_Mirror_StackPath( $config );
+				break;
+
+			case 'stackpath2':
+				$instances[$instance_key] = new CdnEngine_Mirror_StackPath2( $config );
+				break;
+
+			default :
+				trigger_error( 'Incorrect CDN engine', E_USER_WARNING );
+				$instances[$instance_key] = new CdnEngine_Base();
+				break;
+			}
+		}
+
+		return $instances[$instance_key];
+	}
+}