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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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#ifndef SAL_CONVERTER_CACHE_HXX_
#define SAL_CONVERTER_CACHE_HXX_

#include <salunx.h>
#include <rtl/tencinfo.h>
#include <rtl/textcvt.h>

#include <map>

extern "C" const char*
pGetEncodingName( rtl_TextEncoding nEncoding );

//
// Cache TextToUnicode and UnicodeToText converter and conversion info which is
// used in DrawXYZ routines and in the Event loop
//

class SalConverterCache {

    public:
                        SalConverterCache();
                        ~SalConverterCache();
        Bool            EncodingHasChar(
                                rtl_TextEncoding nEncoding, sal_Unicode nChar );
        rtl_UnicodeToTextConverter
                        GetU2TConverter( rtl_TextEncoding nEncoding );
        rtl_TextToUnicodeConverter
                        GetT2UConverter( rtl_TextEncoding nEncoding );
        Bool            IsSingleByteEncoding( rtl_TextEncoding nEncoding );
        sal_Size        ConvertStringUTF16( const sal_Unicode *pText, int nTextLen,
                                sal_Char *pBuffer, sal_Size nBufferSize,
                                rtl_TextEncoding nEncoding);

        static SalConverterCache*
                        GetInstance ();

    private:

        struct ConverterT {
            rtl_UnicodeToTextConverter  mpU2T;
            rtl_TextToUnicodeConverter  mpT2U;
            Bool                        mbSingleByteEncoding;
            Bool                        mbValid;
            ConverterT() :
                    mpU2T( NULL ),
                    mpT2U( NULL ),
                    mbSingleByteEncoding( False ),
                    mbValid( False )
            {
            }
            ~ConverterT()
            {
                if( mpU2T )
                    rtl_destroyUnicodeToTextConverter( mpU2T );
                if( mpT2U )
                    rtl_destroyTextToUnicodeConverter( mpT2U );
            }
        };

    std::map< rtl_TextEncoding, ConverterT >        m_aConverters;
};



#endif /* SAL_CONVERTER_CACHE_HXX_ */