Added IE string utility method for creating GUIDs

Author: jimevans

cpp/iedriver/StringUtilities.cpp

@@ -211,4 +211,29 @@ void StringUtilities::Split(const std::wstring& input,
   }
 }
 
-} // namespace webdriver
+std::wstring StringUtilities::CreateGuid() {
+  UUID guid;
+  RPC_WSTR guid_string = NULL;
+  RPC_STATUS status = ::UuidCreate(&guid);
+  if (status != RPC_S_OK) {
+    // If we encounter an error, not bloody much we can do about it.
+    // Just log it and continue.
+    // LOG(WARN) << "UuidCreate returned a status other then RPC_S_OK: " << status;
+  }
+  status = ::UuidToString(&guid, &guid_string);
+  if (status != RPC_S_OK) {
+    // If we encounter an error, not bloody much we can do about it.
+    // Just log it and continue.
+    // LOG(WARN) << "UuidToString returned a status other then RPC_S_OK: " << status;
+  }
+
+  // RPC_WSTR is currently typedef'd in RpcDce.h (pulled in by rpc.h)
+  // as unsigned short*. It needs to be typedef'd as wchar_t*
+  wchar_t* cast_guid_string = reinterpret_cast<wchar_t*>(guid_string);
+  std::wstring returned_guid(cast_guid_string);
+
+  ::RpcStringFree(&guid_string);
+  return returned_guid;
+}
+
+} // namespace webdriver

cpp/iedriver/StringUtilities.h

@@ -30,6 +30,8 @@ class StringUtilities {
   static std::wstring ToWString(const std::string& input);
   static std::string ToString(const std::wstring& input);
 
+  static std::wstring CreateGuid(void);
+
   static std::string Format(const char* format, ...);
   static std::wstring Format(const wchar_t* format, ...);
 
@@ -53,4 +55,4 @@ class StringUtilities {
 
 } // namespace webdriver
 
-#endif  // WEBDRIVER_IE_STRINGUTILITIES_H
+#endif  // WEBDRIVER_IE_STRINGUTILITIES_H