assimp.assimp/samples/SharedCode/UTFConverter.h

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#ifndef ASSIMP_SAMPLES_SHARED_CODE_UTFCONVERTER_H
#define ASSIMP_SAMPLES_SHARED_CODE_UTFCONVERTER_H

#include <string>
#include <locale>
#include <codecvt>

namespace AssimpSamples {
namespace SharedCode {

// Used to convert between multibyte and unicode strings.
class UTFConverter {
    using UTFConverterImpl = std::wstring_convert<std::codecvt_utf8<wchar_t>, wchar_t>;
public:
    UTFConverter(const char* s) :
        s_(s),
        ws_(impl_.from_bytes(s)) {
    }
    UTFConverter(const wchar_t* s) :
        s_(impl_.to_bytes(s)),
        ws_(s) {
    }
    UTFConverter(const std::string& s) :
        s_(s),
        ws_(impl_.from_bytes(s)) {
    }
    UTFConverter(const std::wstring& s) :
        s_(impl_.to_bytes(s)),
        ws_(s) {
    }
    inline const char* c_str() const {
        return s_.c_str();
    }
    inline const std::string& str() const {
        return s_;
    }
    inline const wchar_t* c_wstr() const {
        return ws_.c_str();
    }
private:
    static UTFConverterImpl impl_;
    std::string s_;
    std::wstring ws_;
};

}
}

#endif // ASSIMP_SAMPLES_SHARED_CODE_UTFCONVERTER_H