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diff --git a/native/dicttoolkit/src/utils/command_utils.h b/native/dicttoolkit/src/utils/command_utils.h
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+++ b/native/dicttoolkit/src/utils/command_utils.h
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+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef LATINIME_DICT_TOOLKIT_COMMAND_UTILS_H
+#define LATINIME_DICT_TOOLKIT_COMMAND_UTILS_H
+
+#include <functional>
+#include <memory>
+#include <string>
+
+#include "dict_toolkit_defines.h"
+
+namespace latinime {
+namespace dicttoolkit {
+
+enum class CommandType : int {
+    Info,
+    Diff,
+    Makedict,
+    Header,
+    Help,
+    Unknown
+};
+
+class CommandUtils {
+public:
+    static CommandType getCommandType(const std::string &commandName);
+    static void printCommandUnknownMessage(const std::string &programName,
+            const std::string &commandName);
+    static std::function<int(int, char **)> getCommandExecutor(const CommandType commandType);
+
+private:
+    DISALLOW_IMPLICIT_CONSTRUCTORS(CommandUtils);
+};
+} // namespace dicttoolkit
+} // namespace latinime
+#endif // LATINIME_DICT_TOOLKIT_COMMAND_UTILS_H