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diff --git a/native/dicttoolkit/src/utils/arguments_parser.h b/native/dicttoolkit/src/utils/arguments_parser.h
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+++ b/native/dicttoolkit/src/utils/arguments_parser.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_ARGUMENTS_PARSER_H
+#define LATINIME_DICT_TOOLKIT_ARGUMENTS_PARSER_H
+
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include "dict_toolkit_defines.h"
+#include "utils/arguments_and_options.h"
+
+namespace latinime {
+namespace dicttoolkit {
+
+class OptionSpec {
+ public:
+    // Default constructor and assignment operator is enabled to be used with std::unordered_map.
+    OptionSpec() = default;
+    OptionSpec &operator=(const OptionSpec &) = default;
+
+    static OptionSpec keyValueOption(const std::string &valueName, const std::string &defaultValue,
+            const std::string &description) {
+        return OptionSpec(true /* takeValue */, valueName, defaultValue, description);
+    }
+
+    static OptionSpec switchOption(const std::string &description) {
+        return OptionSpec(false /* takeValue */, "" /* valueName */, "" /* defaultValue */,
+                description);
+    }
+
+    bool takeValue() const { return mTakeValue; }
+    const std::string &getValueName() const { return mValueName; }
+    const std::string &getDefaultValue() const { return mDefaultValue; }
+    const std::string &getDescription() const { return mDescription; }
+
+ private:
+    OptionSpec(const bool takeValue, const std::string &valueName, const std::string &defaultValue,
+            const std::string &description)
+            : mTakeValue(takeValue), mValueName(valueName), mDefaultValue(defaultValue),
+              mDescription(description) {}
+
+    // Whether the option have to be used with a value or just a switch.
+    // e.g. 'f' in "command -f /path/to/file" is mTakeValue == true.
+    //      'f' in "command -f -t" is mTakeValue == false.
+    bool mTakeValue;
+    // Name of the value used to show usage.
+    std::string mValueName;
+    std::string mDefaultValue;
+    std::string mDescription;
+};
+
+class ArgumentSpec {
+ public:
+    static const int UNLIMITED_COUNT;
+
+    static ArgumentSpec singleArgument(const std::string &name, const std::string &description) {
+        return ArgumentSpec(name, 1 /* minCount */, 1 /* maxCount */, description);
+    }
+
+    static ArgumentSpec variableLengthArguments(const std::string &name, const int minCount,
+            const int maxCount, const std::string &description) {
+        return ArgumentSpec(name, minCount, maxCount, description);
+    }
+
+    const std::string &getName() const { return mName; }
+    int getMinCount() const { return mMinCount; }
+    int getMaxCount() const { return mMaxCount; }
+    const std::string &getDescription() const { return mDescription; }
+
+ private:
+    DISALLOW_DEFAULT_CONSTRUCTOR(ArgumentSpec);
+
+    ArgumentSpec(const std::string &name, const int minCount, const int maxCount,
+            const std::string &description)
+            : mName(name), mMinCount(minCount), mMaxCount(maxCount), mDescription(description) {}
+
+    const std::string mName;
+    const int mMinCount;
+    const int mMaxCount;
+    const std::string mDescription;
+};
+
+class ArgumentsParser {
+ public:
+    ArgumentsParser(std::unordered_map<std::string, OptionSpec> &&optionSpecs,
+            std::vector<ArgumentSpec> &&argumentSpecs)
+            : mOptionSpecs(std::move(optionSpecs)), mArgumentSpecs(std::move(argumentSpecs)) {}
+
+    const ArgumentsAndOptions parseArguments(const int argc, char **argv) const;
+    bool validateSpecs() const;
+    void printUsage(const std::string &commandName, const std::string &description) const;
+
+ private:
+    DISALLOW_DEFAULT_CONSTRUCTOR(ArgumentsParser);
+    DISALLOW_ASSIGNMENT_OPERATOR(ArgumentsParser);
+
+    const std::unordered_map<std::string, OptionSpec> mOptionSpecs;
+    const std::vector<ArgumentSpec> mArgumentSpecs;
+};
+
+} // namespace dicttoolkit
+} // namespace latinime
+#endif // LATINIME_DICT_TOOLKIT_ARGUMENTS_PARSER_H