- Represent strings internally in UTF-16 format, this makes it

runtime/bin/file.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "bin/file.h"
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
 #include "bin/thread.h"
 #include "bin/utils.h"
@@ skipping 393 matching lines @@
 
 
 void FUNCTION_NAME(File_Directory)(Dart_NativeArguments args) {
   Dart_EnterScope();
   const char* str =
       DartUtils::GetStringValue(Dart_GetNativeArgument(args, 0));
   char* str_copy = strdup(str);
   char* path = File::GetContainingDirectory(str_copy);
   free(str_copy);
   if (path != NULL) {
-    Dart_SetReturnValue(args, Dart_NewString(path));
+    Dart_SetReturnValue(args, DartUtils::NewString(path));
     free(path);
   } else {
     Dart_Handle err = DartUtils::NewDartOSError();
     if (Dart_IsError(err)) Dart_PropagateError(err);
     Dart_SetReturnValue(args, err);
   }
   Dart_ExitScope();
 }
 
 
 void FUNCTION_NAME(File_FullPath)(Dart_NativeArguments args) {
   Dart_EnterScope();
   const char* str =
       DartUtils::GetStringValue(Dart_GetNativeArgument(args, 0));
   char* path = File::GetCanonicalPath(str);
   if (path != NULL) {
-    Dart_SetReturnValue(args, Dart_NewString(path));
+    Dart_SetReturnValue(args, DartUtils::NewString(path));
     free(path);
   } else {
     Dart_Handle err = DartUtils::NewDartOSError();
     if (Dart_IsError(err)) Dart_PropagateError(err);
     Dart_SetReturnValue(args, err);
   }
   Dart_ExitScope();
 }
 
 
@@ skipping 500 matching lines @@
   Dart_EnterScope();
   Dart_SetReturnValue(args, Dart_Null());
   Dart_Port service_port = File::GetServicePort();
   if (service_port != ILLEGAL_PORT) {
     // Return a send port for the service port.
     Dart_Handle send_port = Dart_NewSendPort(service_port);
     Dart_SetReturnValue(args, send_port);
   }
   Dart_ExitScope();
 }