[dart:io] Adds Platform.operatingSystemVersion

runtime/bin/platform.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/platform.h"
 
 #include "bin/file.h"
 #include "bin/utils.h"
 #include "include/dart_api.h"
 
 namespace dart {
 namespace bin {
 
 void FUNCTION_NAME(Platform_NumberOfProcessors)(Dart_NativeArguments args) {
   Dart_SetReturnValue(args, Dart_NewInteger(Platform::NumberOfProcessors()));
 }
 
 void FUNCTION_NAME(Platform_OperatingSystem)(Dart_NativeArguments args) {
   Dart_SetReturnValue(args, DartUtils::NewString(Platform::OperatingSystem()));
 }
 
+void FUNCTION_NAME(Platform_OperatingSystemVersion)(Dart_NativeArguments args) {
+  const char* version = Platform::OperatingSystemVersion();
+  if (version == NULL) {
+    Dart_SetReturnValue(args, DartUtils::NewDartOSError());
+  } else {
+    Dart_SetReturnValue(args, DartUtils::NewString(version));
+  }
+}
+
 void FUNCTION_NAME(Platform_PathSeparator)(Dart_NativeArguments args) {
   Dart_SetReturnValue(args, DartUtils::NewString(File::PathSeparator()));
 }
 
 void FUNCTION_NAME(Platform_LocalHostname)(Dart_NativeArguments args) {
   const intptr_t HOSTNAME_LENGTH = 256;
   char hostname[HOSTNAME_LENGTH];
   if (Platform::LocalHostname(hostname, HOSTNAME_LENGTH)) {
     Dart_SetReturnValue(args, DartUtils::NewString(hostname));
   } else {
@@ skipping 71 matching lines @@
   const char* locale = Platform::LocaleName();
   if (locale == NULL) {
     Dart_SetReturnValue(args, DartUtils::NewDartOSError());
   } else {
     Dart_SetReturnValue(args, Dart_NewStringFromCString(locale));
   }
 }
 
 }  // namespace bin
 }  // namespace dart