/**
This routine is used to convert Arabic-Indic, Eastern Arabic-Indic
or Devanagari digits to European digits. 

@param aDes Parameter to change
*/
void CResourceLoader::LanguageSpecificNumberConverter::ConvertToWesternNumbers( TDes &aDes )
    {   
    const TChar toArea = 0x030;
    const TInt KLastDevanagariDigit = 0x96F;
    const TInt KFirstDevanagariDigit = 0x966;
    const TInt length = aDes.Length();

    for( TInt i=0; i<length; i++ )
        {
        TChar character = aDes[i];
        TChar fromArea = NumberToBase( character );
        TChar::TBdCategory cat = character.GetBdCategory();

        if ( cat == TChar::EArabicNumber || cat == TChar::EEuropeanNumber ||
           ( KFirstDevanagariDigit <= character && character <= KLastDevanagariDigit ) )
            {
            character += toArea;
            character -= fromArea;
            aDes[i] = TUint16( character );    
            }        
        }
    }
/**
This routine is used to convert between European digits and 
Arabic-Indic, Eastern Arabic-Indic, Devanagari or Thai digits 
based on existing digit type setting. 

@param aDes  Parameter to change
*/
void CResourceLoader::LanguageSpecificNumberConverter::Convert( TDes &aDes )
    {   
    TLocale locale;
    locale.Refresh();
    const TDigitType digitType = locale.DigitType();
    TChar toArea = 0x030;
    switch( digitType )
        {
        case EDigitTypeWestern:
        case EDigitTypeArabicIndic:
        case EDigitTypeEasternArabicIndic:
        case EDigitTypeDevanagari:
        case EDigitTypeThai:
            toArea = digitType;
            break;
        case EDigitTypeUnknown:
        case EDigitTypeAllTypes:
            return;
        }
    
    const TInt length = aDes.Length();
    for( TInt i = 0; i < length; i++ )
        {
        TChar character = aDes[i];
        TChar fromArea = NumberToBase( character );
        TChar::TBdCategory cat = character.GetBdCategory();
        switch( cat )
            {
            case TChar::EArabicNumber:
            case TChar::EEuropeanNumber:
                character += toArea;
                character -= fromArea;
                aDes[i] = TUint16( character );
                break;
            default: 
                break;
            }
        }
    }