Add function for finding what a InputStream or OutputStream is attached to

runtime/bin/socket_win.cc

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// 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/builtin.h"
 #include "bin/eventhandler.h"
+#include "bin/file.h"
 #include "bin/log.h"
 #include "bin/socket.h"
 
 bool Socket::Initialize() {
   int err;
   WSADATA winsock_data;
   WORD version_requested = MAKEWORD(1, 0);
   err = WSAStartup(version_requested, &winsock_data);
   if (err != 0) {
     Log::PrintErr("Unable to initialize Winsock: %d\n", WSAGetLastError());
@@ skipping 114 matching lines @@
   return reinterpret_cast<intptr_t>(client_socket);
 }
 
 
 void Socket::GetError(intptr_t fd, OSError* os_error) {
   Handle* handle = reinterpret_cast<Handle*>(fd);
   os_error->SetCodeAndMessage(OSError::kSystem, handle->last_error());
 }
 
 
+int Socket::GetType(intptr_t fd) {
+  Handle* handle = reinterpret_cast<Handle*>(fd);
+  switch (GetFileType(handle->handle())) {
+    case FILE_TYPE_CHAR: return File::kTerminal;
+    case FILE_TYPE_PIPE: return File::kPipe;
+    case FILE_TYPE_DISK: return File::kFile;
+    default: return GetLastError == NO_ERROR ? File::kOther : -1;
+  }
+}
+
+
 intptr_t Socket::GetStdioHandle(int num) {
   HANDLE handle;
   switch (num) {
     case 0:
       handle = GetStdHandle(STD_INPUT_HANDLE);
       break;
     case 1:
       handle = GetStdHandle(STD_OUTPUT_HANDLE);
       break;
     case 2:
@@ skipping 103 matching lines @@
   if (status == SOCKET_ERROR) {
     DWORD rc = WSAGetLastError();
     closesocket(s);
     SetLastError(rc);
     return -1;
   }
 
   ListenSocket* listen_socket = new ListenSocket(s);
   return reinterpret_cast<intptr_t>(listen_socket);
 }