#ifndef BOOST_UNITS_UTILITY_HPP
#define BOOST_UNITS_UTILITY_HPP

#include <complex>
#include <iostream>
#include <string>

#include <boost/assert.hpp>
#include <boost/cstdint.hpp>
#include <boost/limits.hpp>
#include <boost/type_traits.hpp>

#ifdef MCS_USE_BOOST_REGEX_DEMANGLING
#include <boost/regex.hpp>
#define MCS_USE_DEMANGLING
#endif // MCS_USE_BOOST_REGEX_DEMANGLING

#ifdef MCS_USE_DEMANGLING

#ifdef __GNUC__
#include <cxxabi.h>
#endif // __GNUC__

namespace std {

inline
std::string
demangle(const char* name)
{
    #ifdef __GNUC__
    // need to demangle C++ symbols
    char*       realname;
    std::size_t len; 
    int         stat;
     
	realname = abi::__cxa_demangle(name,NULL,&len,&stat);
	
	if (realname != NULL)
	{
		const std::string	out(realname);
		free(realname);
		
		return out;
	}
	
	return std::string("demangle :: error - unable to demangle specified symbol");
    #else
    return name;
    #endif
}

} // namespace std

namespace boost {

namespace units {

template<class L>
std::string simplify_mpl_typename(const L& source)
{
    const std::string   demangled = std::demangle(typeid(source).name());
    
    #ifdef MCS_USE_BOOST_REGEX_DEMANGLING
    boost::regex    ns_regex("boost::|units::|mpl::|, mpl_::na|mpl_::"),
                    l_end_regex(", l_end"),
                    case_regex("[0-9]l");
    
    const std::string   tmp1(boost::regex_replace(demangled,ns_regex,"")),
                        tmp2(boost::regex_replace(tmp1,l_end_regex," "));
    
    return boost::regex_replace(tmp2,case_regex,"\\U$&\\E");
    #else // MCS_USE_BOOST_REGEX_DEMANGLING
    return demangled;
    #endif // MCS_USE_BOOST_REGEX_DEMANGLING
}

} // namespace units

} // namespace boost
#else // MCS_USE_DEMANGLING
namespace std {

inline
std::string
demangle(const char* name)
{
    return name;
}

} // namespace std

namespace boost {

namespace units {

template<class L>
std::string simplify_mpl_typename(const L& source)
{
    return std::string(typeid(source).name());
}

} // namespace units

} // namespace boost

#endif // MCS_USE_DEMANGLING

#endif // BOOST_UNITS_UTILITY_HPP