private string GetResult(double value, Unit unit, Unit toUnit)
{
var sb = new StringBuilder();
foreach (var conversion in Units.Conversions)
{
if (conversion.From == unit && conversion.To == toUnit)
{
var result = GetResult(value, conversion);
sb.Append(result);
}
}
if (sb.Length == 0)
{
Conversion first = null;
Conversion second = null;
// no direct conversion, try 2-step chain
foreach (var conversion in Units.Conversions)
{
if (conversion.From == unit)
{
first = conversion;
}
if (conversion.To == toUnit)
{
second = conversion;
}
}
if (first != null && second != null && first.To == second.From)
{
var composite = new Conversion(first.From, second.To, v => second.Converter(first.Converter(v)));
sb.Append(GetResult(value, composite));
}
}
return sb.ToString();
}
private string GetResult(double value, Unit unit)
{
var sb = new StringBuilder();
foreach (var conversion in Units.Conversions)
{
if (conversion.From == unit)
{
var result = GetResult(value, conversion);
sb.Append(result);
}
}
if (sb.Length == 0)
{
return null;
}
return sb.ToString();
}
public Conversion(Unit from, Unit to, Func<double, double> converter)
{
From = from;
To = to;
Converter = converter;
}