dart:io | Add FileSystemEntity.stat() and FileStat class.

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 564 matching lines @@
   } else  {
     Dart_Handle err = DartUtils::NewDartArgumentError(
         "Non-string argument to FileSystemEntity.type");
     if (Dart_IsError(err)) Dart_PropagateError(err);
     Dart_SetReturnValue(args, err);
   }
   Dart_ExitScope();
 }
 
 
+void FUNCTION_NAME(File_Stat)(Dart_NativeArguments args) {
+  Dart_EnterScope();
+  if (Dart_IsString(Dart_GetNativeArgument(args, 0))) {
+    const char* path =
+        DartUtils::GetStringValue(Dart_GetNativeArgument(args, 0));
+
+    int64_t stat_data[File::kStatSize];
+    File::Stat(path, stat_data);
+    Dart_Handle returned_data = Dart_NewTypedData(kInt64, File::kStatSize);
+    if (Dart_IsError(returned_data)) Dart_PropagateError(returned_data);
+    Dart_TypedData_Type data_type_unused;
+    void* data_location;
+    intptr_t data_length_unused;
+    Dart_Handle status = Dart_TypedDataAcquireData(returned_data,
+                                                   &data_type_unused,
+                                                   &data_location,
+                                                   &data_length_unused);
+    if (Dart_IsError(status)) Dart_PropagateError(status);
+    memmove(data_location, stat_data, File::kStatSize * sizeof(int64_t));
+    status = Dart_TypedDataReleaseData(returned_data);
+    if (Dart_IsError(status)) Dart_PropagateError(status);
+    Dart_SetReturnValue(args, returned_data);
+  } else {
+    Dart_Handle err = DartUtils::NewDartArgumentError(
+        "Non-string argument to FileSystemEntity.type");
+    if (Dart_IsError(err)) Dart_PropagateError(err);
+    Dart_SetReturnValue(args, err);
+  }
+  Dart_ExitScope();
+}
+
+
 void FUNCTION_NAME(File_AreIdentical)(Dart_NativeArguments args) {
   Dart_EnterScope();
   if (Dart_IsString(Dart_GetNativeArgument(args, 0)) &&
       Dart_IsString(Dart_GetNativeArgument(args, 1))) {
     const char* path_1 =
         DartUtils::GetStringValue(Dart_GetNativeArgument(args, 0));
     const char* path_2 =
         DartUtils::GetStringValue(Dart_GetNativeArgument(args, 1));
     File::Identical result = File::AreIdentical(path_1, path_2);
     if (result == File::kError) {
@@ skipping 520 matching lines @@
     } else if (result == File::kIdentical) {
       return CObject::True();
     } else {
       return CObject::False();
     }
   }
   return CObject::IllegalArgumentError();
 }
 
 
+static CObject* FileStatRequest(const CObjectArray& request) {
+  if (request.Length() == 2 &&
+      request[1]->IsString()) {
+    int64_t data[File::kStatSize];
+    CObjectString path(request[1]);
+    File::Stat(path.CString(), data);
+    CObjectArray* result =
+        new CObjectArray(CObject::NewArray(File::kStatSize));
+    for (int i = 0; i < File::kStatSize; ++i) {
+      result->SetAt(i, new CObjectInt64(CObject::NewInt64(data[i])));
+    }
+    CObjectArray* wrapper = new CObjectArray(CObject::NewArray(2));
+    wrapper->SetAt(0, new CObjectInt32(CObject::NewInt32(CObject::kSuccess)));
+    wrapper->SetAt(1, result);
+    return wrapper;
+  }
+  return CObject::IllegalArgumentError();
+}
+
+
 static void FileService(Dart_Port dest_port_id,
                  Dart_Port reply_port_id,
                  Dart_CObject* message) {
   CObject* response = CObject::IllegalArgumentError();
   CObjectArray request(message);
   if (message->type == Dart_CObject::kArray) {
     if (request.Length() > 1 && request[0]->IsInt32()) {
       CObjectInt32 requestType(request[0]);
       switch (requestType.Value()) {
         case File::kExistsRequest:
@@ skipping 61 matching lines @@
           break;
         case File::kLinkTargetRequest:
           response = FileLinkTargetRequest(request);
           break;
         case File::kTypeRequest:
           response = FileTypeRequest(request);
           break;
         case File::kIdenticalRequest:
           response = FileIdenticalRequest(request);
           break;
+        case File::kStatRequest:
+          response = FileStatRequest(request);
+          break;
         default:
           UNREACHABLE();
       }
     }
   }
 
   Dart_PostCObject(reply_port_id, response->AsApiCObject());
 }
 
 
 Dart_Port File::GetServicePort() {
   return file_service_.GetServicePort();
 }
 
 
 void FUNCTION_NAME(File_NewServicePort)(Dart_NativeArguments args) {
   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();
 }
 
 }  // namespace bin
 }  // namespace dart