Change File.directory to not do any IO

runtime/bin/file.cc

 // Copyright (c) 2013, 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/io_buffer.h"
 #include "bin/thread.h"
@@ skipping 488 matching lines @@
     Dart_SetReturnValue(args, Dart_NewBoolean(result));
   } else {
     Dart_Handle err = DartUtils::NewDartOSError();
     if (Dart_IsError(err)) Dart_PropagateError(err);
     Dart_SetReturnValue(args, err);
   }
   Dart_ExitScope();
 }
 
 
-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, 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, DartUtils::NewString(path));
     free(path);
   } else {
     Dart_Handle err = DartUtils::NewDartOSError();
@@ skipping 190 matching lines @@
       free(result);
       return path;
     } else {
       return CObject::NewOSError();
     }
   }
   return CObject::IllegalArgumentError();
 }
 
 
-static CObject* FileDirectoryRequest(const CObjectArray& request) {
-  if (request.Length() == 2 && request[1]->IsString()) {
-    CObjectString filename(request[1]);
-    char* str_copy = strdup(filename.CString());
-    char* path = File::GetContainingDirectory(str_copy);
-    free(str_copy);
-    if (path != NULL) {
-      CObject* result = new CObjectString(CObject::NewString(path));
-      free(path);
-      return result;
-    } else {
-      return CObject::NewOSError();
-    }
-  }
-  return CObject::Null();
-}
-
-
 static CObject* FileCloseRequest(const CObjectArray& request) {
   intptr_t return_value = -1;
   if (request.Length() == 2 && request[1]->IsIntptr()) {
     File* file = CObjectToFilePointer(request[1]);
     ASSERT(file != NULL);
     delete file;
     return_value = 0;
   }
   return new CObjectIntptr(CObject::NewIntptr(return_value));
 }
@@ skipping 425 matching lines @@
           break;
         case File::kOpenRequest:
           response = FileOpenRequest(request);
           break;
         case File::kDeleteRequest:
           response = FileDeleteRequest(request);
           break;
         case File::kFullPathRequest:
           response = FileFullPathRequest(request);
           break;
-        case File::kDirectoryRequest:
-          response = FileDirectoryRequest(request);
-          break;
         case File::kCloseRequest:
           response = FileCloseRequest(request);
           break;
         case File::kPositionRequest:
           response = FilePositionRequest(request);
           break;
         case File::kSetPositionRequest:
           response = FileSetPositionRequest(request);
           break;
         case File::kTruncateRequest:
@@ skipping 66 matching lines @@
   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();
 }
 
 }  // namespace bin
 }  // namespace dart