+ /**
+ * Generate the appropriate line to enable the given extension or skin
+ *
+ * @param string $dir Either "extensions" or "skins"
+ * @param string $name Name of extension/skin
+ * @throws InvalidArgumentException
+ * @return string
+ */
+ private function generateExtEnableLine( $dir, $name ) {
+ if ( $dir === 'extensions' ) {
+ $jsonFile = 'extension.json';
+ $function = 'wfLoadExtension';
+ } elseif ( $dir === 'skins' ) {
+ $jsonFile = 'skin.json';
+ $function = 'wfLoadSkin';
+ } else {
+ throw new InvalidArgumentException( '$dir was not "extensions" or "skins' );
+ }
+
+ $encName = self::escapePhpString( $name );
+
+ if ( file_exists( "{$this->IP}/$dir/$encName/$jsonFile" ) ) {
+ return "$function( '$encName' );\n";
+ } else {
+ return "require_once \"\$IP/$dir/$encName/$encName.php\";\n";
+ }
+ }
+