public static string GetString(int integer, int fractional100, CurrencyOption option)
{
if (!(0 <= fractional100 && fractional100 <= 99))
{
throw new ArgumentException($"The argument `{nameof(fractional100)}` must be between 0 and 99.");
}
int index;
switch (option.Target)
{
case CurrencyOption.ETarget.Lower: index = 0; break;
case CurrencyOption.ETarget.Upper: index = 1; break;
default: throw new NotSupportedException();
}
string GetPartString(char[] singles, string level)
{
if (!singles.Any())
{
return(string.Empty);
}
var sb = new StringBuilder();
var zero = false;
foreach (var kv in singles.AsKvPairs())
{
if (kv.Value != '0')
{
var value = NumberValues[index][kv.Value - '0'];
var singleNumberUnit = SingleNumberUnits[index][SingleNumberUnits[0].Length - singles.Length + kv.Key];
if (zero)
{
sb.Append($"{NumberValues[index][0]}{value}{singleNumberUnit}");
}
else
{
sb.Append($"{value}{singleNumberUnit}");
}
zero = false;
}
else
{
zero = true;
}
}
sb.Append(level);
return(sb.ToString());
}
//TODO: Use Linqsharp to calculate
var levelParts = integer.ToString()
.For(parts => parts.AsKvPairs()
.GroupBy(x => (x.Key + (4 - parts.Length % 4)) / 4)
.Select(g => g.Select(x => x.Value).ToArray()))
.ToArray();
var integerRet = levelParts.Select((v, i) => GetPartString(v, Levels[Levels.Length - levelParts.Length + i])).Join("");
if (option.IsSimplified && (integerRet.StartsWith("一十") || integerRet.StartsWith("壹拾")))
{
integerRet = integerRet.Substring(1);
}
if (fractional100 == 0)
{
return($"{integerRet}{UnitValues[index][0]}整");
}
else if (fractional100 % 10 == 0)
{
return($"{integerRet}{UnitValues[index][0]}{NumberValues[index][fractional100 / 10]}{UnitValues[index][1]}整");
}
else
{
return($"{integerRet}{UnitValues[index][0]}{NumberValues[index][fractional100 / 10]}{UnitValues[index][1]}{NumberValues[index][fractional100 % 10]}{UnitValues[index][2]}");
}
}
public static string GetString(double money, CurrencyOption option) => GetString((int)money, (int)(money * 100 % 100), option);
