/// <summary>
/// Converts an integer into a roman numeral string.
/// </summary>
/// <param name="x"></param>
/// <returns></returns>
/// <remarks></remarks>
public static string ToNumerals(int x, RomanNumeralStyle style = RomanNumeralStyle.Modern)
{
if (x == 0)
{
return("NVL");
}
if (x < 0)
{
x = -x;
}
string s = "" + x;
string @out = "";
char[] ch = s.ToCharArray();
switch (ch.Length)
{
case 1:
{
return(FirstToNum(ch[0], style));
}
case 2:
{
return(SecondToNum(ch[0], style) + FirstToNum(ch[1], style));
}
case 3:
{
return(ThirdToNum(ch[0], style) + SecondToNum(ch[1], style) + FirstToNum(ch[2], style));
}
case var @case when @case >= 4:
{
return(FourthToNum(s) + ThirdToNum(ch[1], style) + SecondToNum(ch[2], style) + FirstToNum(ch[3], style));
}
}
return(null);
}
/// <summary>
/// Converts the third integer (from right-to-left) into a roman numeral.
/// </summary>
/// <param name="ch"></param>
/// <returns></returns>
/// <remarks></remarks>
private static string ThirdToNum(char ch, RomanNumeralStyle style = RomanNumeralStyle.Modern)
{
return(style == RomanNumeralStyle.Antique ? ThirdNumsAntique[int.Parse(Conversions.ToString(ch))] : ThirdNums[int.Parse(Conversions.ToString(ch))]);
}