diff --git a/TODO.txt b/TODO.txt
new file mode 100644
index 0000000..5c9c8e9
--- /dev/null
+++ b/TODO.txt
@@ -0,0 +1,6 @@
+TODO Items:
+ - making all the smae nampespace
+ - removing useless parameters. NOT NEEDED, no extra there.
+ - removing old class
+ - removing redefinition warning 
+ - eq - ineq matrices should be general not symmetric 
diff --git a/bounded2smp.cpp b/bounded2smp.cpp
index cbac3e6..543c4ab 100644
--- a/bounded2smp.cpp
+++ b/bounded2smp.cpp
@@ -8,7 +8,7 @@
 
 using namespace format;
 
-int main(int argc, char *argv[]){
+int main(int argc, const char *argv[]){
 
  std::map<std::string,std::string> qp_args;
  parse_args_bounded(argc, argv, qp_args);
diff --git a/cxxopts.hpp b/cxxopts.hpp
new file mode 100644
index 0000000..995b893
--- /dev/null
+++ b/cxxopts.hpp
@@ -0,0 +1,2231 @@
+/*
+
+Copyright (c) 2014, 2015, 2016, 2017 Jarryd Beck
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+*/
+
+#ifndef CXXOPTS_HPP_INCLUDED
+#define CXXOPTS_HPP_INCLUDED
+
+#include <cctype>
+#include <cstring>
+#include <exception>
+#include <iostream>
+#include <limits>
+#include <map>
+#include <memory>
+#include <regex>
+#include <sstream>
+#include <string>
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+#include <vector>
+
+#ifdef __cpp_lib_optional
+#include <optional>
+#define CXXOPTS_HAS_OPTIONAL
+#endif
+
+#if __cplusplus >= 201603L
+#define CXXOPTS_NODISCARD [[nodiscard]]
+#else
+#define CXXOPTS_NODISCARD
+#endif
+
+#ifndef CXXOPTS_VECTOR_DELIMITER
+#define CXXOPTS_VECTOR_DELIMITER ','
+#endif
+
+#define CXXOPTS__VERSION_MAJOR 2
+#define CXXOPTS__VERSION_MINOR 2
+#define CXXOPTS__VERSION_PATCH 0
+
+namespace cxxopts
+{
+  static constexpr struct {
+    uint8_t major, minor, patch;
+  } version = {
+    CXXOPTS__VERSION_MAJOR,
+    CXXOPTS__VERSION_MINOR,
+    CXXOPTS__VERSION_PATCH
+  };
+} // namespace cxxopts
+
+//when we ask cxxopts to use Unicode, help strings are processed using ICU,
+//which results in the correct lengths being computed for strings when they
+//are formatted for the help output
+//it is necessary to make sure that <unicode/unistr.h> can be found by the
+//compiler, and that icu-uc is linked in to the binary.
+
+#ifdef CXXOPTS_USE_UNICODE
+#include <unicode/unistr.h>
+
+namespace cxxopts
+{
+  typedef icu::UnicodeString String;
+
+  inline
+  String
+  toLocalString(std::string s)
+  {
+    return icu::UnicodeString::fromUTF8(std::move(s));
+  }
+
+  class UnicodeStringIterator : public
+    std::iterator<std::forward_iterator_tag, int32_t>
+  {
+    public:
+
+    UnicodeStringIterator(const icu::UnicodeString* string, int32_t pos)
+    : s(string)
+    , i(pos)
+    {
+    }
+
+    value_type
+    operator*() const
+    {
+      return s->char32At(i);
+    }
+
+    bool
+    operator==(const UnicodeStringIterator& rhs) const
+    {
+      return s == rhs.s && i == rhs.i;
+    }
+
+    bool
+    operator!=(const UnicodeStringIterator& rhs) const
+    {
+      return !(*this == rhs);
+    }
+
+    UnicodeStringIterator&
+    operator++()
+    {
+      ++i;
+      return *this;
+    }
+
+    UnicodeStringIterator
+    operator+(int32_t v)
+    {
+      return UnicodeStringIterator(s, i + v);
+    }
+
+    private:
+    const icu::UnicodeString* s;
+    int32_t i;
+  };
+
+  inline
+  String&
+  stringAppend(String&s, String a)
+  {
+    return s.append(std::move(a));
+  }
+
+  inline
+  String&
+  stringAppend(String& s, int n, UChar32 c)
+  {
+    for (int i = 0; i != n; ++i)
+    {
+      s.append(c);
+    }
+
+    return s;
+  }
+
+  template <typename Iterator>
+  String&
+  stringAppend(String& s, Iterator begin, Iterator end)
+  {
+    while (begin != end)
+    {
+      s.append(*begin);
+      ++begin;
+    }
+
+    return s;
+  }
+
+  inline
+  size_t
+  stringLength(const String& s)
+  {
+    return s.length();
+  }
+
+  inline
+  std::string
+  toUTF8String(const String& s)
+  {
+    std::string result;
+    s.toUTF8String(result);
+
+    return result;
+  }
+
+  inline
+  bool
+  empty(const String& s)
+  {
+    return s.isEmpty();
+  }
+}
+
+namespace std
+{
+  inline
+  cxxopts::UnicodeStringIterator
+  begin(const icu::UnicodeString& s)
+  {
+    return cxxopts::UnicodeStringIterator(&s, 0);
+  }
+
+  inline
+  cxxopts::UnicodeStringIterator
+  end(const icu::UnicodeString& s)
+  {
+    return cxxopts::UnicodeStringIterator(&s, s.length());
+  }
+}
+
+//ifdef CXXOPTS_USE_UNICODE
+#else
+
+namespace cxxopts
+{
+  typedef std::string String;
+
+  template <typename T>
+  T
+  toLocalString(T&& t)
+  {
+    return std::forward<T>(t);
+  }
+
+  inline
+  size_t
+  stringLength(const String& s)
+  {
+    return s.length();
+  }
+
+  inline
+  String&
+  stringAppend(String&s, const String& a)
+  {
+    return s.append(a);
+  }
+
+  inline
+  String&
+  stringAppend(String& s, size_t n, char c)
+  {
+    return s.append(n, c);
+  }
+
+  template <typename Iterator>
+  String&
+  stringAppend(String& s, Iterator begin, Iterator end)
+  {
+    return s.append(begin, end);
+  }
+
+  template <typename T>
+  std::string
+  toUTF8String(T&& t)
+  {
+    return std::forward<T>(t);
+  }
+
+  inline
+  bool
+  empty(const std::string& s)
+  {
+    return s.empty();
+  }
+} // namespace cxxopts
+
+//ifdef CXXOPTS_USE_UNICODE
+#endif
+
+namespace cxxopts
+{
+  namespace
+  {
+#ifdef _WIN32
+    const std::string LQUOTE("\'");
+    const std::string RQUOTE("\'");
+#else
+    const std::string LQUOTE("‘");
+    const std::string RQUOTE("’");
+#endif
+  } // namespace
+
+  class Value : public std::enable_shared_from_this<Value>
+  {
+    public:
+
+    virtual ~Value() = default;
+
+    virtual
+    std::shared_ptr<Value>
+    clone() const = 0;
+
+    virtual void
+    parse(const std::string& text) const = 0;
+
+    virtual void
+    parse() const = 0;
+
+    virtual bool
+    has_default() const = 0;
+
+    virtual bool
+    is_container() const = 0;
+
+    virtual bool
+    has_implicit() const = 0;
+
+    virtual std::string
+    get_default_value() const = 0;
+
+    virtual std::string
+    get_implicit_value() const = 0;
+
+    virtual std::shared_ptr<Value>
+    default_value(const std::string& value) = 0;
+
+    virtual std::shared_ptr<Value>
+    implicit_value(const std::string& value) = 0;
+
+    virtual std::shared_ptr<Value>
+    no_implicit_value() = 0;
+
+    virtual bool
+    is_boolean() const = 0;
+  };
+
+  class OptionException : public std::exception
+  {
+    public:
+    explicit OptionException(std::string  message)
+    : m_message(std::move(message))
+    {
+    }
+
+    CXXOPTS_NODISCARD
+    const char*
+    what() const noexcept override
+    {
+      return m_message.c_str();
+    }
+
+    private:
+    std::string m_message;
+  };
+
+  class OptionSpecException : public OptionException
+  {
+    public:
+
+    explicit OptionSpecException(const std::string& message)
+    : OptionException(message)
+    {
+    }
+  };
+
+  class OptionParseException : public OptionException
+  {
+    public:
+    explicit OptionParseException(const std::string& message)
+    : OptionException(message)
+    {
+    }
+  };
+
+  class option_exists_error : public OptionSpecException
+  {
+    public:
+    explicit option_exists_error(const std::string& option)
+    : OptionSpecException("Option " + LQUOTE + option + RQUOTE + " already exists")
+    {
+    }
+  };
+
+  class invalid_option_format_error : public OptionSpecException
+  {
+    public:
+    explicit invalid_option_format_error(const std::string& format)
+    : OptionSpecException("Invalid option format " + LQUOTE + format + RQUOTE)
+    {
+    }
+  };
+
+  class option_syntax_exception : public OptionParseException {
+    public:
+    explicit option_syntax_exception(const std::string& text)
+    : OptionParseException("Argument " + LQUOTE + text + RQUOTE +
+        " starts with a - but has incorrect syntax")
+    {
+    }
+  };
+
+  class option_not_exists_exception : public OptionParseException
+  {
+    public:
+    explicit option_not_exists_exception(const std::string& option)
+    : OptionParseException("Option " + LQUOTE + option + RQUOTE + " does not exist")
+    {
+    }
+  };
+
+  class missing_argument_exception : public OptionParseException
+  {
+    public:
+    explicit missing_argument_exception(const std::string& option)
+    : OptionParseException(
+        "Option " + LQUOTE + option + RQUOTE + " is missing an argument"
+      )
+    {
+    }
+  };
+
+  class option_requires_argument_exception : public OptionParseException
+  {
+    public:
+    explicit option_requires_argument_exception(const std::string& option)
+    : OptionParseException(
+        "Option " + LQUOTE + option + RQUOTE + " requires an argument"
+      )
+    {
+    }
+  };
+
+  class option_not_has_argument_exception : public OptionParseException
+  {
+    public:
+    option_not_has_argument_exception
+    (
+      const std::string& option,
+      const std::string& arg
+    )
+    : OptionParseException(
+        "Option " + LQUOTE + option + RQUOTE +
+        " does not take an argument, but argument " +
+        LQUOTE + arg + RQUOTE + " given"
+      )
+    {
+    }
+  };
+
+  class option_not_present_exception : public OptionParseException
+  {
+    public:
+    explicit option_not_present_exception(const std::string& option)
+    : OptionParseException("Option " + LQUOTE + option + RQUOTE + " not present")
+    {
+    }
+  };
+
+  class option_has_no_value_exception : public OptionException
+  {
+    public:
+    explicit option_has_no_value_exception(const std::string& option)
+    : OptionException(
+        option.empty() ?
+        ("Option " + LQUOTE + option + RQUOTE + " has no value") :
+        "Option has no value")
+    {
+    }
+  };
+
+  class argument_incorrect_type : public OptionParseException
+  {
+    public:
+    explicit argument_incorrect_type
+    (
+      const std::string& arg
+    )
+    : OptionParseException(
+        "Argument " + LQUOTE + arg + RQUOTE + " failed to parse"
+      )
+    {
+    }
+  };
+
+  class option_required_exception : public OptionParseException
+  {
+    public:
+    explicit option_required_exception(const std::string& option)
+    : OptionParseException(
+        "Option " + LQUOTE + option + RQUOTE + " is required but not present"
+      )
+    {
+    }
+  };
+
+  template <typename T>
+  void throw_or_mimic(const std::string& text)
+  {
+    static_assert(std::is_base_of<std::exception, T>::value,
+                  "throw_or_mimic only works on std::exception and "
+                  "deriving classes");
+
+#ifndef CXXOPTS_NO_EXCEPTIONS
+    // If CXXOPTS_NO_EXCEPTIONS is not defined, just throw
+    throw T{text};
+#else
+    // Otherwise manually instantiate the exception, print what() to stderr,
+    // and exit
+    T exception{text};
+    std::cerr << exception.what() << std::endl;
+    std::exit(EXIT_FAILURE);
+#endif
+  }
+
+  namespace values
+  {
+    namespace
+    {
+      std::basic_regex<char> integer_pattern
+        ("(-)?(0x)?([0-9a-zA-Z]+)|((0x)?0)");
+      std::basic_regex<char> truthy_pattern
+        ("(t|T)(rue)?|1");
+      std::basic_regex<char> falsy_pattern
+        ("(f|F)(alse)?|0");
+    } // namespace
+
+    namespace detail
+    {
+      template <typename T, bool B>
+      struct SignedCheck;
+
+      template <typename T>
+      struct SignedCheck<T, true>
+      {
+        template <typename U>
+        void
+        operator()(bool negative, U u, const std::string& text)
+        {
+          if (negative)
+          {
+            if (u > static_cast<U>((std::numeric_limits<T>::min)()))
+            {
+              throw_or_mimic<argument_incorrect_type>(text);
+            }
+          }
+          else
+          {
+            if (u > static_cast<U>((std::numeric_limits<T>::max)()))
+            {
+              throw_or_mimic<argument_incorrect_type>(text);
+            }
+          }
+        }
+      };
+
+      template <typename T>
+      struct SignedCheck<T, false>
+      {
+        template <typename U>
+        void
+        operator()(bool, U, const std::string&) {}
+      };
+
+      template <typename T, typename U>
+      void
+      check_signed_range(bool negative, U value, const std::string& text)
+      {
+        SignedCheck<T, std::numeric_limits<T>::is_signed>()(negative, value, text);
+      }
+    } // namespace detail
+
+    template <typename R, typename T>
+    R
+    checked_negate(T&& t, const std::string&, std::true_type)
+    {
+      // if we got to here, then `t` is a positive number that fits into
+      // `R`. So to avoid MSVC C4146, we first cast it to `R`.
+      // See https://github.com/jarro2783/cxxopts/issues/62 for more details.
+      return static_cast<R>(-static_cast<R>(t-1)-1);
+    }
+
+    template <typename R, typename T>
+    T
+    checked_negate(T&& t, const std::string& text, std::false_type)
+    {
+      throw_or_mimic<argument_incorrect_type>(text);
+      return t;
+    }
+
+    template <typename T>
+    void
+    integer_parser(const std::string& text, T& value)
+    {
+      std::smatch match;
+      std::regex_match(text, match, integer_pattern);
+
+      if (match.length() == 0)
+      {
+        throw_or_mimic<argument_incorrect_type>(text);
+      }
+
+      if (match.length(4) > 0)
+      {
+        value = 0;
+        return;
+      }
+
+      using US = typename std::make_unsigned<T>::type;
+
+      constexpr bool is_signed = std::numeric_limits<T>::is_signed;
+      const bool negative = match.length(1) > 0;
+      const uint8_t base = match.length(2) > 0 ? 16 : 10;
+
+      auto value_match = match[3];
+
+      US result = 0;
+
+      for (auto iter = value_match.first; iter != value_match.second; ++iter)
+      {
+        US digit = 0;
+
+        if (*iter >= '0' && *iter <= '9')
+        {
+          digit = static_cast<US>(*iter - '0');
+        }
+        else if (base == 16 && *iter >= 'a' && *iter <= 'f')
+        {
+          digit = static_cast<US>(*iter - 'a' + 10);
+        }
+        else if (base == 16 && *iter >= 'A' && *iter <= 'F')
+        {
+          digit = static_cast<US>(*iter - 'A' + 10);
+        }
+        else
+        {
+          throw_or_mimic<argument_incorrect_type>(text);
+        }
+
+        const US next = static_cast<US>(result * base + digit);
+        if (result > next)
+        {
+          throw_or_mimic<argument_incorrect_type>(text);
+        }
+
+        result = next;
+      }
+
+      detail::check_signed_range<T>(negative, result, text);
+
+      if (negative)
+      {
+        value = checked_negate<T>(result,
+          text,
+          std::integral_constant<bool, is_signed>());
+      }
+      else
+      {
+        value = static_cast<T>(result);
+      }
+    }
+
+    template <typename T>
+    void stringstream_parser(const std::string& text, T& value)
+    {
+      std::stringstream in(text);
+      in >> value;
+      if (!in) {
+        throw_or_mimic<argument_incorrect_type>(text);
+      }
+    }
+
+    inline
+    void
+    parse_value(const std::string& text, uint8_t& value)
+    {
+      integer_parser(text, value);
+    }
+
+    inline
+    void
+    parse_value(const std::string& text, int8_t& value)
+    {
+      integer_parser(text, value);
+    }
+
+    inline
+    void
+    parse_value(const std::string& text, uint16_t& value)
+    {
+      integer_parser(text, value);
+    }
+
+    inline
+    void
+    parse_value(const std::string& text, int16_t& value)
+    {
+      integer_parser(text, value);
+    }
+
+    inline
+    void
+    parse_value(const std::string& text, uint32_t& value)
+    {
+      integer_parser(text, value);
+    }
+
+    inline
+    void
+    parse_value(const std::string& text, int32_t& value)
+    {
+      integer_parser(text, value);
+    }
+
+    inline
+    void
+    parse_value(const std::string& text, uint64_t& value)
+    {
+      integer_parser(text, value);
+    }
+
+    inline
+    void
+    parse_value(const std::string& text, int64_t& value)
+    {
+      integer_parser(text, value);
+    }
+
+    inline
+    void
+    parse_value(const std::string& text, bool& value)
+    {
+      std::smatch result;
+      std::regex_match(text, result, truthy_pattern);
+
+      if (!result.empty())
+      {
+        value = true;
+        return;
+      }
+
+      std::regex_match(text, result, falsy_pattern);
+      if (!result.empty())
+      {
+        value = false;
+        return;
+      }
+
+      throw_or_mimic<argument_incorrect_type>(text);
+    }
+
+    inline
+    void
+    parse_value(const std::string& text, std::string& value)
+    {
+      value = text;
+    }
+
+    // The fallback parser. It uses the stringstream parser to parse all types
+    // that have not been overloaded explicitly.  It has to be placed in the
+    // source code before all other more specialized templates.
+    template <typename T>
+    void
+    parse_value(const std::string& text, T& value) {
+      stringstream_parser(text, value);
+    }
+
+    template <typename T>
+    void
+    parse_value(const std::string& text, std::vector<T>& value)
+    {
+      std::stringstream in(text);
+      std::string token;
+      while(!in.eof() && std::getline(in, token, CXXOPTS_VECTOR_DELIMITER)) {
+        T v;
+        parse_value(token, v);
+        value.emplace_back(std::move(v));
+      }
+    }
+
+#ifdef CXXOPTS_HAS_OPTIONAL
+    template <typename T>
+    void
+    parse_value(const std::string& text, std::optional<T>& value)
+    {
+      T result;
+      parse_value(text, result);
+      value = std::move(result);
+    }
+#endif
+
+    inline
+    void parse_value(const std::string& text, char& c)
+    {
+      if (text.length() != 1)
+      {
+        throw_or_mimic<argument_incorrect_type>(text);
+      }
+
+      c = text[0];
+    }
+
+    template <typename T>
+    struct type_is_container
+    {
+      static constexpr bool value = false;
+    };
+
+    template <typename T>
+    struct type_is_container<std::vector<T>>
+    {
+      static constexpr bool value = true;
+    };
+
+    template <typename T>
+    class abstract_value : public Value
+    {
+      using Self = abstract_value<T>;
+
+      public:
+      abstract_value()
+      : m_result(std::make_shared<T>())
+      , m_store(m_result.get())
+      {
+      }
+
+      explicit abstract_value(T* t)
+      : m_store(t)
+      {
+      }
+
+      ~abstract_value() override = default;
+
+      abstract_value(const abstract_value& rhs)
+      {
+        if (rhs.m_result)
+        {
+          m_result = std::make_shared<T>();
+          m_store = m_result.get();
+        }
+        else
+        {
+          m_store = rhs.m_store;
+        }
+
+        m_default = rhs.m_default;
+        m_implicit = rhs.m_implicit;
+        m_default_value = rhs.m_default_value;
+        m_implicit_value = rhs.m_implicit_value;
+      }
+
+      void
+      parse(const std::string& text) const override
+      {
+        parse_value(text, *m_store);
+      }
+
+      bool
+      is_container() const override
+      {
+        return type_is_container<T>::value;
+      }
+
+      void
+      parse() const override
+      {
+        parse_value(m_default_value, *m_store);
+      }
+
+      bool
+      has_default() const override
+      {
+        return m_default;
+      }
+
+      bool
+      has_implicit() const override
+      {
+        return m_implicit;
+      }
+
+      std::shared_ptr<Value>
+      default_value(const std::string& value) override
+      {
+        m_default = true;
+        m_default_value = value;
+        return shared_from_this();
+      }
+
+      std::shared_ptr<Value>
+      implicit_value(const std::string& value) override
+      {
+        m_implicit = true;
+        m_implicit_value = value;
+        return shared_from_this();
+      }
+
+      std::shared_ptr<Value>
+      no_implicit_value() override
+      {
+        m_implicit = false;
+        return shared_from_this();
+      }
+
+      std::string
+      get_default_value() const override
+      {
+        return m_default_value;
+      }
+
+      std::string
+      get_implicit_value() const override
+      {
+        return m_implicit_value;
+      }
+
+      bool
+      is_boolean() const override
+      {
+        return std::is_same<T, bool>::value;
+      }
+
+      const T&
+      get() const
+      {
+        if (m_store == nullptr)
+        {
+          return *m_result;
+        }
+        return *m_store;
+      }
+
+      protected:
+      std::shared_ptr<T> m_result;
+      T* m_store;
+
+      bool m_default = false;
+      bool m_implicit = false;
+
+      std::string m_default_value;
+      std::string m_implicit_value;
+    };
+
+    template <typename T>
+    class standard_value : public abstract_value<T>
+    {
+      public:
+      using abstract_value<T>::abstract_value;
+
+      CXXOPTS_NODISCARD
+      std::shared_ptr<Value>
+      clone() const
+      {
+        return std::make_shared<standard_value<T>>(*this);
+      }
+    };
+
+    template <>
+    class standard_value<bool> : public abstract_value<bool>
+    {
+      public:
+      ~standard_value() override = default;
+
+      standard_value()
+      {
+        set_default_and_implicit();
+      }
+
+      explicit standard_value(bool* b)
+      : abstract_value(b)
+      {
+        set_default_and_implicit();
+      }
+
+      std::shared_ptr<Value>
+      clone() const override
+      {
+        return std::make_shared<standard_value<bool>>(*this);
+      }
+
+      private:
+
+      void
+      set_default_and_implicit()
+      {
+        m_default = true;
+        m_default_value = "false";
+        m_implicit = true;
+        m_implicit_value = "true";
+      }
+    };
+  } // namespace values
+
+  template <typename T>
+  std::shared_ptr<Value>
+  value()
+  {
+    return std::make_shared<values::standard_value<T>>();
+  }
+
+  template <typename T>
+  std::shared_ptr<Value>
+  value(T& t)
+  {
+    return std::make_shared<values::standard_value<T>>(&t);
+  }
+
+  class OptionAdder;
+
+  class OptionDetails
+  {
+    public:
+    OptionDetails
+    (
+      std::string short_,
+      std::string long_,
+      String desc,
+      std::shared_ptr<const Value> val
+    )
+    : m_short(std::move(short_))
+    , m_long(std::move(long_))
+    , m_desc(std::move(desc))
+    , m_value(std::move(val))
+    , m_count(0)
+    {
+    }
+
+    OptionDetails(const OptionDetails& rhs)
+    : m_desc(rhs.m_desc)
+    , m_count(rhs.m_count)
+    {
+      m_value = rhs.m_value->clone();
+    }
+
+    OptionDetails(OptionDetails&& rhs) = default;
+
+    CXXOPTS_NODISCARD
+    const String&
+    description() const
+    {
+      return m_desc;
+    }
+
+    CXXOPTS_NODISCARD
+    const Value&
+    value() const {
+        return *m_value;
+    }
+
+    CXXOPTS_NODISCARD
+    std::shared_ptr<Value>
+    make_storage() const
+    {
+      return m_value->clone();
+    }
+
+    CXXOPTS_NODISCARD
+    const std::string&
+    short_name() const
+    {
+      return m_short;
+    }
+
+    CXXOPTS_NODISCARD
+    const std::string&
+    long_name() const
+    {
+      return m_long;
+    }
+
+    private:
+    std::string m_short;
+    std::string m_long;
+    String m_desc;
+    std::shared_ptr<const Value> m_value;
+    int m_count;
+  };
+
+  struct HelpOptionDetails
+  {
+    std::string s;
+    std::string l;
+    String desc;
+    bool has_default;
+    std::string default_value;
+    bool has_implicit;
+    std::string implicit_value;
+    std::string arg_help;
+    bool is_container;
+    bool is_boolean;
+  };
+
+  struct HelpGroupDetails
+  {
+    std::string name;
+    std::string description;
+    std::vector<HelpOptionDetails> options;
+  };
+
+  class OptionValue
+  {
+    public:
+    void
+    parse
+    (
+      const std::shared_ptr<const OptionDetails>& details,
+      const std::string& text
+    )
+    {
+      ensure_value(details);
+      ++m_count;
+      m_value->parse(text);
+      m_long_name = &details->long_name();
+    }
+
+    void
+    parse_default(const std::shared_ptr<const OptionDetails>& details)
+    {
+      ensure_value(details);
+      m_default = true;
+      m_long_name = &details->long_name();
+      m_value->parse();
+    }
+
+    CXXOPTS_NODISCARD
+    size_t
+    count() const noexcept
+    {
+      return m_count;
+    }
+
+    // TODO: maybe default options should count towards the number of arguments
+    CXXOPTS_NODISCARD
+    bool
+    has_default() const noexcept
+    {
+      return m_default;
+    }
+
+    template <typename T>
+    const T&
+    as() const
+    {
+      if (m_value == nullptr) {
+          throw_or_mimic<option_has_no_value_exception>(
+              m_long_name == nullptr ? "" : *m_long_name);
+      }
+
+#ifdef CXXOPTS_NO_RTTI
+      return static_cast<const values::standard_value<T>&>(*m_value).get();
+#else
+      return dynamic_cast<const values::standard_value<T>&>(*m_value).get();
+#endif
+    }
+
+    private:
+    void
+    ensure_value(const std::shared_ptr<const OptionDetails>& details)
+    {
+      if (m_value == nullptr)
+      {
+        m_value = details->make_storage();
+      }
+    }
+
+    const std::string* m_long_name = nullptr;
+        // Holding this pointer is safe, since OptionValue's only exist in key-value pairs,
+        // where the key has the string we point to.
+    std::shared_ptr<Value> m_value;
+    size_t m_count = 0;
+    bool m_default = false;
+  };
+
+  class KeyValue
+  {
+    public:
+    KeyValue(std::string key_, std::string value_)
+    : m_key(std::move(key_))
+    , m_value(std::move(value_))
+    {
+    }
+
+    CXXOPTS_NODISCARD
+    const std::string&
+    key() const
+    {
+      return m_key;
+    }
+
+    CXXOPTS_NODISCARD
+    const std::string&
+    value() const
+    {
+      return m_value;
+    }
+
+    template <typename T>
+    T
+    as() const
+    {
+      T result;
+      values::parse_value(m_value, result);
+      return result;
+    }
+
+    private:
+    std::string m_key;
+    std::string m_value;
+  };
+
+  class ParseResult
+  {
+    public:
+
+    ParseResult(
+      std::shared_ptr<
+        std::unordered_map<std::string, std::shared_ptr<OptionDetails>>
+      >,
+      std::vector<std::string>,
+      bool allow_unrecognised,
+      int&, const char**&);
+
+    size_t
+    count(const std::string& o) const
+    {
+      auto iter = m_options->find(o);
+      if (iter == m_options->end())
+      {
+        return 0;
+      }
+
+      auto riter = m_results.find(iter->second);
+
+      return riter->second.count();
+    }
+
+    const OptionValue&
+    operator[](const std::string& option) const
+    {
+      auto iter = m_options->find(option);
+
+      if (iter == m_options->end())
+      {
+        throw_or_mimic<option_not_present_exception>(option);
+      }
+
+      auto riter = m_results.find(iter->second);
+
+      return riter->second;
+    }
+
+    const std::vector<KeyValue>&
+    arguments() const
+    {
+      return m_sequential;
+    }
+
+    private:
+
+    void
+    parse(int& argc, const char**& argv);
+
+    void
+    add_to_option(const std::string& option, const std::string& arg);
+
+    bool
+    consume_positional(const std::string& a);
+
+    void
+    parse_option
+    (
+      const std::shared_ptr<OptionDetails>& value,
+      const std::string& name,
+      const std::string& arg = ""
+    );
+
+    void
+    parse_default(const std::shared_ptr<OptionDetails>& details);
+
+    void
+    checked_parse_arg
+    (
+      int argc,
+      const char* argv[],
+      int& current,
+      const std::shared_ptr<OptionDetails>& value,
+      const std::string& name
+    );
+
+    const std::shared_ptr<
+      std::unordered_map<std::string, std::shared_ptr<OptionDetails>>
+    > m_options;
+    std::vector<std::string> m_positional;
+    std::vector<std::string>::iterator m_next_positional;
+    std::unordered_set<std::string> m_positional_set;
+    std::unordered_map<std::shared_ptr<OptionDetails>, OptionValue> m_results;
+
+    bool m_allow_unrecognised;
+
+    std::vector<KeyValue> m_sequential;
+  };
+
+  struct Option
+  {
+    Option
+    (
+      std::string opts,
+      std::string desc,
+      std::shared_ptr<const Value>  value = ::cxxopts::value<bool>(),
+      std::string arg_help = ""
+    )
+    : opts_(std::move(opts))
+    , desc_(std::move(desc))
+    , value_(std::move(value))
+    , arg_help_(std::move(arg_help))
+    {
+    }
+
+    std::string opts_;
+    std::string desc_;
+    std::shared_ptr<const Value> value_;
+    std::string arg_help_;
+  };
+
+  class Options
+  {
+    using OptionMap = std::unordered_map<std::string, std::shared_ptr<OptionDetails>>;
+    public:
+
+    explicit Options(std::string program, std::string help_string = "")
+    : m_program(std::move(program))
+    , m_help_string(toLocalString(std::move(help_string)))
+    , m_custom_help("[OPTION...]")
+    , m_positional_help("positional parameters")
+    , m_show_positional(false)
+    , m_allow_unrecognised(false)
+    , m_options(std::make_shared<OptionMap>())
+    , m_next_positional(m_positional.end())
+    {
+    }
+
+    Options&
+    positional_help(std::string help_text)
+    {
+      m_positional_help = std::move(help_text);
+      return *this;
+    }
+
+    Options&
+    custom_help(std::string help_text)
+    {
+      m_custom_help = std::move(help_text);
+      return *this;
+    }
+
+    Options&
+    show_positional_help()
+    {
+      m_show_positional = true;
+      return *this;
+    }
+
+    Options&
+    allow_unrecognised_options()
+    {
+      m_allow_unrecognised = true;
+      return *this;
+    }
+
+    ParseResult
+    parse(int& argc, const char**& argv);
+
+    OptionAdder
+    add_options(std::string group = "");
+
+    void
+    add_options
+    (
+      const std::string& group,
+      std::initializer_list<Option> options
+    );
+
+    void
+    add_option
+    (
+      const std::string& group,
+      const Option& option
+    );
+
+    void
+    add_option
+    (
+      const std::string& group,
+      const std::string& s,
+      const std::string& l,
+      std::string desc,
+      const std::shared_ptr<const Value>& value,
+      std::string arg_help
+    );
+
+    //parse positional arguments into the given option
+    void
+    parse_positional(std::string option);
+
+    void
+    parse_positional(std::vector<std::string> options);
+
+    void
+    parse_positional(std::initializer_list<std::string> options);
+
+    template <typename Iterator>
+    void
+    parse_positional(Iterator begin, Iterator end) {
+      parse_positional(std::vector<std::string>{begin, end});
+    }
+
+    std::string
+    help(const std::vector<std::string>& groups = {}) const;
+
+    std::vector<std::string>
+    groups() const;
+
+    const HelpGroupDetails&
+    group_help(const std::string& group) const;
+
+    private:
+
+    void
+    add_one_option
+    (
+      const std::string& option,
+      const std::shared_ptr<OptionDetails>& details
+    );
+
+    String
+    help_one_group(const std::string& group) const;
+
+    void
+    generate_group_help
+    (
+      String& result,
+      const std::vector<std::string>& groups
+    ) const;
+
+    void
+    generate_all_groups_help(String& result) const;
+
+    std::string m_program;
+    String m_help_string;
+    std::string m_custom_help;
+    std::string m_positional_help;
+    bool m_show_positional;
+    bool m_allow_unrecognised;
+
+    std::shared_ptr<OptionMap> m_options;
+    std::vector<std::string> m_positional;
+    std::vector<std::string>::iterator m_next_positional;
+    std::unordered_set<std::string> m_positional_set;
+
+    //mapping from groups to help options
+    std::map<std::string, HelpGroupDetails> m_help;
+  };
+
+  class OptionAdder
+  {
+    public:
+
+    OptionAdder(Options& options, std::string group)
+    : m_options(options), m_group(std::move(group))
+    {
+    }
+
+    OptionAdder&
+    operator()
+    (
+      const std::string& opts,
+      const std::string& desc,
+      const std::shared_ptr<const Value>& value
+        = ::cxxopts::value<bool>(),
+      std::string arg_help = ""
+    );
+
+    private:
+    Options& m_options;
+    std::string m_group;
+  };
+
+  namespace
+  {
+    constexpr int OPTION_LONGEST = 30;
+    constexpr int OPTION_DESC_GAP = 2;
+
+    std::basic_regex<char> option_matcher
+      ("--([[:alnum:]][-_[:alnum:]]+)(=(.*))?|-([[:alnum:]]+)");
+
+    std::basic_regex<char> option_specifier
+      ("(([[:alnum:]]),)?[ ]*([[:alnum:]][-_[:alnum:]]*)?");
+
+    String
+    format_option
+    (
+      const HelpOptionDetails& o
+    )
+    {
+      const auto& s = o.s;
+      const auto& l = o.l;
+
+      String result = "  ";
+
+      if (!s.empty())
+      {
+        result += "-" + toLocalString(s);
+        if (!l.empty())
+        {
+          result += ",";
+        }
+      }
+      else
+      {
+        result += "   ";
+      }
+
+      if (!l.empty())
+      {
+        result += " --" + toLocalString(l);
+      }
+
+      auto arg = !o.arg_help.empty() ? toLocalString(o.arg_help) : "arg";
+
+      if (!o.is_boolean)
+      {
+        if (o.has_implicit)
+        {
+          result += " [=" + arg + "(=" + toLocalString(o.implicit_value) + ")]";
+        }
+        else
+        {
+          result += " " + arg;
+        }
+      }
+
+      return result;
+    }
+
+    String
+    format_description
+    (
+      const HelpOptionDetails& o,
+      size_t start,
+      size_t width
+    )
+    {
+      auto desc = o.desc;
+
+      if (o.has_default && (!o.is_boolean || o.default_value != "false"))
+      {
+        if(!o.default_value.empty())
+        {
+          desc += toLocalString(" (default: " + o.default_value + ")");
+        }
+        else
+        {
+          desc += toLocalString(" (default: \"\")");
+        }
+      }
+
+      String result;
+
+      auto current = std::begin(desc);
+      auto startLine = current;
+      auto lastSpace = current;
+
+      auto size = size_t{};
+
+      while (current != std::end(desc))
+      {
+        if (*current == ' ')
+        {
+          lastSpace = current;
+        }
+
+        if (*current == '\n')
+        {
+          startLine = current + 1;
+          lastSpace = startLine;
+        }
+        else if (size > width)
+        {
+          if (lastSpace == startLine)
+          {
+            stringAppend(result, startLine, current + 1);
+            stringAppend(result, "\n");
+            stringAppend(result, start, ' ');
+            startLine = current + 1;
+            lastSpace = startLine;
+          }
+          else
+          {
+            stringAppend(result, startLine, lastSpace);
+            stringAppend(result, "\n");
+            stringAppend(result, start, ' ');
+            startLine = lastSpace + 1;
+            lastSpace = startLine;
+          }
+          size = 0;
+        }
+        else
+        {
+          ++size;
+        }
+
+        ++current;
+      }
+
+      //append whatever is left
+      stringAppend(result, startLine, current);
+
+      return result;
+    }
+  } // namespace
+
+inline
+ParseResult::ParseResult
+(
+  std::shared_ptr<
+    std::unordered_map<std::string, std::shared_ptr<OptionDetails>>
+  > options,
+  std::vector<std::string> positional,
+  bool allow_unrecognised,
+  int& argc, const char**& argv
+)
+: m_options(std::move(options))
+, m_positional(std::move(positional))
+, m_next_positional(m_positional.begin())
+, m_allow_unrecognised(allow_unrecognised)
+{
+  parse(argc, argv);
+}
+
+inline
+void
+Options::add_options
+(
+  const std::string &group,
+  std::initializer_list<Option> options
+)
+{
+ OptionAdder option_adder(*this, group);
+ for (const auto &option: options)
+ {
+   option_adder(option.opts_, option.desc_, option.value_, option.arg_help_);
+ }
+}
+
+inline
+OptionAdder
+Options::add_options(std::string group)
+{
+  return OptionAdder(*this, std::move(group));
+}
+
+inline
+OptionAdder&
+OptionAdder::operator()
+(
+  const std::string& opts,
+  const std::string& desc,
+  const std::shared_ptr<const Value>& value,
+  std::string arg_help
+)
+{
+  std::match_results<const char*> result;
+  std::regex_match(opts.c_str(), result, option_specifier);
+
+  if (result.empty())
+  {
+    throw_or_mimic<invalid_option_format_error>(opts);
+  }
+
+  const auto& short_match = result[2];
+  const auto& long_match = result[3];
+
+  if (!short_match.length() && !long_match.length())
+  {
+    throw_or_mimic<invalid_option_format_error>(opts);
+  } else if (long_match.length() == 1 && short_match.length())
+  {
+    throw_or_mimic<invalid_option_format_error>(opts);
+  }
+
+  auto option_names = []
+  (
+    const std::sub_match<const char*>& short_,
+    const std::sub_match<const char*>& long_
+  )
+  {
+    if (long_.length() == 1)
+    {
+      return std::make_tuple(long_.str(), short_.str());
+    }
+    return std::make_tuple(short_.str(), long_.str());
+  }(short_match, long_match);
+
+  m_options.add_option
+  (
+    m_group,
+    std::get<0>(option_names),
+    std::get<1>(option_names),
+    desc,
+    value,
+    std::move(arg_help)
+  );
+
+  return *this;
+}
+
+inline
+void
+ParseResult::parse_default(const std::shared_ptr<OptionDetails>& details)
+{
+  m_results[details].parse_default(details);
+}
+
+inline
+void
+ParseResult::parse_option
+(
+  const std::shared_ptr<OptionDetails>& value,
+  const std::string& /*name*/,
+  const std::string& arg
+)
+{
+  auto& result = m_results[value];
+  result.parse(value, arg);
+
+  m_sequential.emplace_back(value->long_name(), arg);
+}
+
+inline
+void
+ParseResult::checked_parse_arg
+(
+  int argc,
+  const char* argv[],
+  int& current,
+  const std::shared_ptr<OptionDetails>& value,
+  const std::string& name
+)
+{
+  if (current + 1 >= argc)
+  {
+    if (value->value().has_implicit())
+    {
+      parse_option(value, name, value->value().get_implicit_value());
+    }
+    else
+    {
+      throw_or_mimic<missing_argument_exception>(name);
+    }
+  }
+  else
+  {
+    if (value->value().has_implicit())
+    {
+      parse_option(value, name, value->value().get_implicit_value());
+    }
+    else
+    {
+      parse_option(value, name, argv[current + 1]);
+      ++current;
+    }
+  }
+}
+
+inline
+void
+ParseResult::add_to_option(const std::string& option, const std::string& arg)
+{
+  auto iter = m_options->find(option);
+
+  if (iter == m_options->end())
+  {
+    throw_or_mimic<option_not_exists_exception>(option);
+  }
+
+  parse_option(iter->second, option, arg);
+}
+
+inline
+bool
+ParseResult::consume_positional(const std::string& a)
+{
+  while (m_next_positional != m_positional.end())
+  {
+    auto iter = m_options->find(*m_next_positional);
+    if (iter != m_options->end())
+    {
+      auto& result = m_results[iter->second];
+      if (!iter->second->value().is_container())
+      {
+        if (result.count() == 0)
+        {
+          add_to_option(*m_next_positional, a);
+          ++m_next_positional;
+          return true;
+        }
+        ++m_next_positional;
+        continue;
+      }
+      add_to_option(*m_next_positional, a);
+      return true;
+    }
+    throw_or_mimic<option_not_exists_exception>(*m_next_positional);
+  }
+
+  return false;
+}
+
+inline
+void
+Options::parse_positional(std::string option)
+{
+  parse_positional(std::vector<std::string>{std::move(option)});
+}
+
+inline
+void
+Options::parse_positional(std::vector<std::string> options)
+{
+  m_positional = std::move(options);
+  m_next_positional = m_positional.begin();
+
+  m_positional_set.insert(m_positional.begin(), m_positional.end());
+}
+
+inline
+void
+Options::parse_positional(std::initializer_list<std::string> options)
+{
+  parse_positional(std::vector<std::string>(options));
+}
+
+inline
+ParseResult
+Options::parse(int& argc, const char**& argv)
+{
+  ParseResult result(m_options, m_positional, m_allow_unrecognised, argc, argv);
+  return result;
+}
+
+inline
+void
+ParseResult::parse(int& argc, const char**& argv)
+{
+  int current = 1;
+
+  int nextKeep = 1;
+
+  bool consume_remaining = false;
+
+  while (current != argc)
+  {
+    if (strcmp(argv[current], "--") == 0)
+    {
+      consume_remaining = true;
+      ++current;
+      break;
+    }
+
+    std::match_results<const char*> result;
+    std::regex_match(argv[current], result, option_matcher);
+
+    if (result.empty())
+    {
+      //not a flag
+
+      // but if it starts with a `-`, then it's an error
+      if (argv[current][0] == '-' && argv[current][1] != '\0') {
+        if (!m_allow_unrecognised) {
+          throw_or_mimic<option_syntax_exception>(argv[current]);
+        }
+      }
+
+      //if true is returned here then it was consumed, otherwise it is
+      //ignored
+      if (consume_positional(argv[current]))
+      {
+      }
+      else
+      {
+        argv[nextKeep] = argv[current];
+        ++nextKeep;
+      }
+      //if we return from here then it was parsed successfully, so continue
+    }
+    else
+    {
+      //short or long option?
+      if (result[4].length() != 0)
+      {
+        const std::string& s = result[4];
+
+        for (std::size_t i = 0; i != s.size(); ++i)
+        {
+          std::string name(1, s[i]);
+          auto iter = m_options->find(name);
+
+          if (iter == m_options->end())
+          {
+            if (m_allow_unrecognised)
+            {
+              continue;
+            }
+            //error
+            throw_or_mimic<option_not_exists_exception>(name);
+          }
+
+          auto value = iter->second;
+
+          if (i + 1 == s.size())
+          {
+            //it must be the last argument
+            checked_parse_arg(argc, argv, current, value, name);
+          }
+          else if (value->value().has_implicit())
+          {
+            parse_option(value, name, value->value().get_implicit_value());
+          }
+          else
+          {
+            //error
+            throw_or_mimic<option_requires_argument_exception>(name);
+          }
+        }
+      }
+      else if (result[1].length() != 0)
+      {
+        const std::string& name = result[1];
+
+        auto iter = m_options->find(name);
+
+        if (iter == m_options->end())
+        {
+          if (m_allow_unrecognised)
+          {
+            // keep unrecognised options in argument list, skip to next argument
+            argv[nextKeep] = argv[current];
+            ++nextKeep;
+            ++current;
+            continue;
+          }
+          //error
+          throw_or_mimic<option_not_exists_exception>(name);
+        }
+
+        auto opt = iter->second;
+
+        //equals provided for long option?
+        if (result[2].length() != 0)
+        {
+          //parse the option given
+
+          parse_option(opt, name, result[3]);
+        }
+        else
+        {
+          //parse the next argument
+          checked_parse_arg(argc, argv, current, opt, name);
+        }
+      }
+
+    }
+
+    ++current;
+  }
+
+  for (auto& opt : *m_options)
+  {
+    auto& detail = opt.second;
+    const auto& value = detail->value();
+
+    auto& store = m_results[detail];
+
+    if(value.has_default() && !store.count() && !store.has_default()){
+      parse_default(detail);
+    }
+  }
+
+  if (consume_remaining)
+  {
+    while (current < argc)
+    {
+      if (!consume_positional(argv[current])) {
+        break;
+      }
+      ++current;
+    }
+
+    //adjust argv for any that couldn't be swallowed
+    while (current != argc) {
+      argv[nextKeep] = argv[current];
+      ++nextKeep;
+      ++current;
+    }
+  }
+
+  argc = nextKeep;
+
+}
+
+inline
+void
+Options::add_option
+(
+  const std::string& group,
+  const Option& option
+)
+{
+    add_options(group, {option});
+}
+
+inline
+void
+Options::add_option
+(
+  const std::string& group,
+  const std::string& s,
+  const std::string& l,
+  std::string desc,
+  const std::shared_ptr<const Value>& value,
+  std::string arg_help
+)
+{
+  auto stringDesc = toLocalString(std::move(desc));
+  auto option = std::make_shared<OptionDetails>(s, l, stringDesc, value);
+
+  if (!s.empty())
+  {
+    add_one_option(s, option);
+  }
+
+  if (!l.empty())
+  {
+    add_one_option(l, option);
+  }
+
+  //add the help details
+  auto& options = m_help[group];
+
+  options.options.emplace_back(HelpOptionDetails{s, l, stringDesc,
+      value->has_default(), value->get_default_value(),
+      value->has_implicit(), value->get_implicit_value(),
+      std::move(arg_help),
+      value->is_container(),
+      value->is_boolean()});
+}
+
+inline
+void
+Options::add_one_option
+(
+  const std::string& option,
+  const std::shared_ptr<OptionDetails>& details
+)
+{
+  auto in = m_options->emplace(option, details);
+
+  if (!in.second)
+  {
+    throw_or_mimic<option_exists_error>(option);
+  }
+}
+
+inline
+String
+Options::help_one_group(const std::string& g) const
+{
+  using OptionHelp = std::vector<std::pair<String, String>>;
+
+  auto group = m_help.find(g);
+  if (group == m_help.end())
+  {
+    return "";
+  }
+
+  OptionHelp format;
+
+  size_t longest = 0;
+
+  String result;
+
+  if (!g.empty())
+  {
+    result += toLocalString(" " + g + " options:\n");
+  }
+
+  for (const auto& o : group->second.options)
+  {
+    if (m_positional_set.find(o.l) != m_positional_set.end() &&
+        !m_show_positional)
+    {
+      continue;
+    }
+
+    auto s = format_option(o);
+    longest = (std::max)(longest, stringLength(s));
+    format.push_back(std::make_pair(s, String()));
+  }
+
+  longest = (std::min)(longest, static_cast<size_t>(OPTION_LONGEST));
+
+  //widest allowed description
+  auto allowed = size_t{76} - longest - OPTION_DESC_GAP;
+
+  auto fiter = format.begin();
+  for (const auto& o : group->second.options)
+  {
+    if (m_positional_set.find(o.l) != m_positional_set.end() &&
+        !m_show_positional)
+    {
+      continue;
+    }
+
+    auto d = format_description(o, longest + OPTION_DESC_GAP, allowed);
+
+    result += fiter->first;
+    if (stringLength(fiter->first) > longest)
+    {
+      result += '\n';
+      result += toLocalString(std::string(longest + OPTION_DESC_GAP, ' '));
+    }
+    else
+    {
+      result += toLocalString(std::string(longest + OPTION_DESC_GAP -
+        stringLength(fiter->first),
+        ' '));
+    }
+    result += d;
+    result += '\n';
+
+    ++fiter;
+  }
+
+  return result;
+}
+
+inline
+void
+Options::generate_group_help
+(
+  String& result,
+  const std::vector<std::string>& print_groups
+) const
+{
+  for (size_t i = 0; i != print_groups.size(); ++i)
+  {
+    const String& group_help_text = help_one_group(print_groups[i]);
+    if (empty(group_help_text))
+    {
+      continue;
+    }
+    result += group_help_text;
+    if (i < print_groups.size() - 1)
+    {
+      result += '\n';
+    }
+  }
+}
+
+inline
+void
+Options::generate_all_groups_help(String& result) const
+{
+  std::vector<std::string> all_groups;
+  all_groups.reserve(m_help.size());
+
+  for (const auto& group : m_help)
+  {
+    all_groups.push_back(group.first);
+  }
+
+  generate_group_help(result, all_groups);
+}
+
+inline
+std::string
+Options::help(const std::vector<std::string>& help_groups) const
+{
+  String result = m_help_string + "\nUsage:\n  " +
+    toLocalString(m_program) + " " + toLocalString(m_custom_help);
+
+  if (!m_positional.empty() && !m_positional_help.empty()) {
+    result += " " + toLocalString(m_positional_help);
+  }
+
+  result += "\n\n";
+
+  if (help_groups.empty())
+  {
+    generate_all_groups_help(result);
+  }
+  else
+  {
+    generate_group_help(result, help_groups);
+  }
+
+  return toUTF8String(result);
+}
+
+inline
+std::vector<std::string>
+Options::groups() const
+{
+  std::vector<std::string> g;
+
+  std::transform(
+    m_help.begin(),
+    m_help.end(),
+    std::back_inserter(g),
+    [] (const std::map<std::string, HelpGroupDetails>::value_type& pair)
+    {
+      return pair.first;
+    }
+  );
+
+  return g;
+}
+
+inline
+const HelpGroupDetails&
+Options::group_help(const std::string& group) const
+{
+  return m_help.at(group);
+}
+
+} // namespace cxxopts
+
+#endif //CXXOPTS_HPP_INCLUDED
diff --git a/ie2smp.cpp b/ie2smp.cpp
index e739bac..1a7e258 100644
--- a/ie2smp.cpp
+++ b/ie2smp.cpp
@@ -9,7 +9,7 @@
 
 using namespace format;
 
-int main(int argc, char *argv[]){
+int main(int argc, const char *argv[]){
 
  std::map<std::string,std::string> qp_args;
  parse_args_ie(argc, argv, qp_args);
diff --git a/smp_convertor.cpp b/smp_convertor.cpp
index 07d962b..a4d1cd0 100644
--- a/smp_convertor.cpp
+++ b/smp_convertor.cpp
@@ -13,11 +13,12 @@
 
 using namespace format;
 
-int main(int argc, char *argv[]){
+int main(int argc,const char *argv[]){
 
  std::map<std::string,std::string> qp_args;
  parse_args(argc, argv, qp_args);
-
+  if(qp_args.find("input") == qp_args.end())
+   return 0;
  /*SMP *smp = new SMP(qp_args["H"]);
  smp->load();
  std::cout<<"\n";
@@ -26,7 +27,7 @@ int main(int argc, char *argv[]){
  Description test;
  std::string dtes=test.get_desc();
  auto *qfc = new QPFormatConverter();
- qfc->load_smp(qp_args["H"]);
+ qfc->load_smp(qp_args["input"]);
 //qfc->smp_->write("tmp2.yml");
 qfc->smp_to_bounded();
 
@@ -44,7 +45,7 @@ qfc->smp_to_bounded();
 
 
  auto *qfc3 = new QPFormatConverter();
- qfc3->load_smp(qp_args["H"]);
+ qfc3->load_smp(qp_args["input"]);
 //qfc->smp_->write("tmp2.yml");
  qfc3->smp_to_ie();
 
@@ -59,7 +60,7 @@ qfc->smp_to_bounded();
 //  std::cout<<"WRONG conversion\n";
 
  qfc3->smp_->set_description(dtes);
- qfc3->smp_->write("temp3.yml");
+ qfc3->smp_->write(qp_args["output"]);
 
  delete qfc3;
  delete qfc4;
diff --git a/utils.h b/utils.h
index a737bcd..d372b55 100644
--- a/utils.h
+++ b/utils.h
@@ -5,15 +5,78 @@
 #ifndef SCO_CONVERTOR_UTILS_H
 #define SCO_CONVERTOR_UTILS_H
 
-#include <getopt.h>
 #include <algorithm>
 #include <iomanip>
 #include <fstream>
 #include <map>
 #include <iostream>
+#include "cxxopts.hpp"
 
 namespace format{
 
+
+bool parse_args_bounded(int argc, const char *argv[], std::map<std::string, std::string> &qp_args) {
+  auto print_help = [](){std::cout<<"Input argument is wrong, you need at least an input QP file ";};
+  try
+  {
+   cxxopts::Options options(argv[0], " - example command line options");
+   options
+     .positional_help("[optional args]")
+     .show_positional_help();
+
+   options
+     .allow_unrecognised_options()
+     .add_options()
+       ("p,quadratic", "Quadratic matrix",  cxxopts::value<std::string>())
+       ("q,linear", "linear vector",  cxxopts::value<std::string>())
+       ("a,constraints", "Constraint matrix",  cxxopts::value<std::string>() )
+       ("l,lbounds", "Lower bounds", cxxopts::value<std::string>())
+       ("u,ubounds", "Upper bounds", cxxopts::value<std::string>())
+       ("o,output", "Output path of SMP", cxxopts::value<std::string>())
+       ("help", "Print help")
+     ;
+
+   auto result = options.parse(argc, argv);
+   if(result.count("p"))
+    qp_args.insert(std::pair<std::string, std::string>("quadratic",
+      result["p"].as<std::string>()));
+
+   if(result.count("q"))
+    qp_args.insert(std::pair<std::string, std::string>("linear",
+      result["q"].as<std::string>()));
+
+   if(result.count("a"))
+    qp_args.insert(std::pair<std::string, std::string>("constraints",
+      result["a"].as<std::string>()));
+
+   if(result.count("l"))
+    qp_args.insert(std::pair<std::string, std::string>("l-bounds",
+                                                       result["l"].as<std::string>()));
+
+   if(result.count("u"))
+    qp_args.insert(std::pair<std::string, std::string>("u-bounds",
+                                                       result["u"].as<std::string>()));
+
+   if(result.count("o"))
+    qp_args.insert(std::pair<std::string, std::string>("output",
+                                                       result["o"].as<std::string>()));
+
+   if (result.count("h"))
+   {
+    std::cout << "needs to write it! :|" << std::endl;
+    exit(0);
+   }
+  }
+  catch (const cxxopts::OptionException& e)
+  {
+   std::cout << "error parsing options: " << e.what() << std::endl;
+   exit(1);
+  }
+  return true;
+ }
+
+
+/*
  void parse_args_bounded(int argc, char **argv, std::map<std::string, std::string> &qp_args){
   const char* const short_opts = "p:q:a:l:u:o:h";
   const option long_opts[] = {
@@ -62,7 +125,76 @@ namespace format{
    }
   }
  }
+*/
+
+
+ bool parse_args_ie(int argc, const char *argv[], std::map<std::string, std::string> &qp_args) {
+  auto print_help = [](){std::cout<<"Input argument is wrong, you need at least an input QP file ";};
+  try
+  {
+   cxxopts::Options options(argv[0], " - example command line options");
+   options
+     .positional_help("[optional args]")
+     .show_positional_help();
+
+   options
+     .allow_unrecognised_options()
+     .add_options()
+       ("p,quadratic", "Quadratic matrix",  cxxopts::value<std::string>())
+       ("q,linear", "linear vector",  cxxopts::value<std::string>())
+       ("a,eq", "Eq constraint matrix",  cxxopts::value<std::string>() )
+       ("b,eqbounds", "Eq bounds", cxxopts::value<std::string>())
+       ("c,ineq", "Inequality matrix", cxxopts::value<std::string>())
+       ("d,ineqbounds", "Ineq bounds", cxxopts::value<std::string>())
+       ("o,output", "Output path of SMP", cxxopts::value<std::string>())
+       ("help", "Print help")
+     ;
+
+   auto result = options.parse(argc, argv);
+   if(result.count("p"))
+    qp_args.insert(std::pair<std::string, std::string>("quadratic",
+      result["p"].as<std::string>()));
+
+   if(result.count("q"))
+    qp_args.insert(std::pair<std::string, std::string>("linear",
+      result["q"].as<std::string>()));
 
+   if(result.count("a"))
+    qp_args.insert(std::pair<std::string, std::string>("equalities",
+      result["a"].as<std::string>()));
+
+   if(result.count("b"))
+    qp_args.insert(std::pair<std::string, std::string>("equality bounds",
+      result["b"].as<std::string>()));
+
+   if(result.count("c"))
+    qp_args.insert(std::pair<std::string, std::string>("inequalities",
+      result["c"].as<std::string>()));
+
+   if(result.count("d"))
+    qp_args.insert(std::pair<std::string, std::string>("inequality bounds",
+      result["d"].as<std::string>()));
+
+   if(result.count("o"))
+    qp_args.insert(std::pair<std::string, std::string>("output",
+                                                       result["o"].as<std::string>()));
+
+   if (result.count("h"))
+   {
+    std::cout << "needs to write it! :|" << std::endl;
+    exit(0);
+   }
+  }
+  catch (const cxxopts::OptionException& e)
+  {
+   std::cout << "error parsing options: " << e.what() << std::endl;
+   exit(1);
+  }
+  return true;
+ }
+
+
+/*
  void parse_args_ie(int argc, char **argv, std::map<std::string, std::string> &qp_args){
   const char* const short_opts = "p:q:a:b:c:d:o:h";
   const option long_opts[] = {
@@ -115,6 +247,116 @@ namespace format{
    }
   }
  }
+*/
+
+ bool parse_args(int argc, const char *argv[], std::map<std::string, std::string> &qp_args) {
+  auto print_help = [](){std::cout<<"Input argument is wrong, you need at least an input QP file ";};
+  try
+  {
+   cxxopts::Options options(argv[0], " - example command line options");
+   options
+     .positional_help("[optional args]")
+     .show_positional_help();
+
+   options
+     .allow_unrecognised_options()
+     .add_options()
+       ("v,variant", "NASOQ Variant", cxxopts::value<std::string>())
+       ("i,input", "Input SMP format", cxxopts::value<std::string>()) //nasoq driver
+       ("u,output", "Output SMP format", cxxopts::value<std::string>()) // not imp
+       ("d,header", "Print CSV header", cxxopts::value<std::string>()) // only for nasoq driver
+       ("o,objective", "Quadratic matrix",  cxxopts::value<std::string>())
+       ("l,linear", "linear vector",  cxxopts::value<std::string>())
+       ("a,eq", "Equality matrix",  cxxopts::value<std::string>() )
+       ("b,eqb", "Equality vector", cxxopts::value<std::string>())
+       ("c,ineq", "Inequality matrix", cxxopts::value<std::string>())
+       ("g,ineqb", "Inequality vector", cxxopts::value<std::string>())
+       ("p,perturb", "Pertubation power value",
+        cxxopts::value<std::string>())
+       ("r,refinement", "Refinement iterations",
+        cxxopts::value<std::string>())
+       ("e,epsilon", "Accuracy threshold power",
+        cxxopts::value<std::string>())
+       ("t,toli", "Iterative refinement threshold",
+        cxxopts::value<std::string>())
+       ("help", "Print help")
+#ifdef CXXOPTS_USE_UNICODE
+    ("unicode", u8"A help option with non-ascii: à. Here the size of the"
+        " string should be correct")
+#endif
+     ;
+
+   auto result = options.parse(argc, argv);
+   if(result.count("v"))
+    qp_args.insert(std::pair<std::string, std::string>("variant",
+                                                       result["v"].as<std::string>()));
+
+   if(result.count("i"))
+    qp_args.insert(std::pair<std::string, std::string>("input",
+                                                       result["i"].as<std::string>()));
+
+   if(result.count("o"))
+    qp_args.insert(std::pair<std::string, std::string>("H",
+                                                       result["o"].as<std::string>()));
+
+   if(result.count("l"))
+    qp_args.insert(std::pair<std::string, std::string>("q",
+                                                       result["l"].as<std::string>()));
+
+   if(result.count("a"))
+    qp_args.insert(std::pair<std::string, std::string>("A",
+                                                       result["a"].as<std::string>()));
+
+   if(result.count("b"))
+    qp_args.insert(std::pair<std::string, std::string>("b",
+                                                       result["b"].as<std::string>()));
+
+   if(result.count("c"))
+    qp_args.insert(std::pair<std::string, std::string>("C",
+                                                       result["c"].as<std::string>()));
+
+   if(result.count("g"))
+    qp_args.insert(std::pair<std::string, std::string>("d",
+                                                       result["g"].as<std::string>()));
+
+   if(result.count("p"))
+    qp_args.insert(std::pair<std::string, std::string>("perturbation",
+                                                       result["p"].as<std::string>()));
+
+   if(result.count("e"))
+    qp_args.insert(std::pair<std::string, std::string>("epsilon",
+                                                       result["e"].as<std::string>()));
+
+   if(result.count("r"))
+    qp_args.insert(std::pair<std::string, std::string>("iterations",
+                                                       result["r"].as<std::string>()));
+
+   if(result.count("t"))
+    qp_args.insert(std::pair<std::string, std::string>("tolerance",
+                                                       result["t"].as<std::string>()));
+
+   if(result.count("d"))
+    qp_args.insert(std::pair<std::string, std::string>("header",
+                                                       result["d"].as<std::string>()));
+
+   if(result.count("u"))
+    qp_args.insert(std::pair<std::string, std::string>("output",
+                                                       result["u"].as<std::string>()));
+   if (result.count("h"))
+   {
+    std::cout << "needs to write it! :|" << std::endl;
+    exit(0);
+   }
+  }
+  catch (const cxxopts::OptionException& e)
+  {
+   std::cout << "error parsing options: " << e.what() << std::endl;
+   exit(1);
+  }
+  return true;
+ }
+
+/*
 
  void parse_args(int argc, char **argv, std::map<std::string, std::string> &qp_args){
   const char* const short_opts = "m:o:l:a:b:c:d:n:p:r:e:t:h";
@@ -188,6 +430,7 @@ namespace format{
    }
   }
  }
+*/
 
  // trim from start (in place)
  static inline void ltrim(std::string &s) {