private string Format(Length length, IFormatProvider formatProvider, CustomLengthFormatInfo formatInfo)
{
var formattedLength = formatInfo.LengthConverter(length);
string valueStr = formattedLength.Value.ToString(formatInfo.ValueFormat, ResolveValueFormatProvider(formatProvider));
var unitFormatter = formatProvider.GetFormat <ICustomFormatter <LengthUnit> >();
string unitStr = unitFormatter != null
? unitFormatter.Format(formatInfo.UnitFormat, formattedLength.Unit, ResolveUnitFormatProvider(formatProvider))
: formattedLength.Unit.ToString();
return(string.Concat(valueStr, " ", unitStr));
}
private bool TryGetFormatInfo(string format, IFormatProvider formatProvider, out CustomLengthFormatInfo formatInfo)
{
Converter <Length, Length> lengthConverter = e => e;
string valueFormat = "0.########";
string unitFormat = "s";
int index = 0;
while (index < format.Length)
{
string token;
if (IsTokenSeparator(format, index, out string separator))
{
index += separator.Length;
continue;
}
else if (MatchesAnyFormattableUnitToken(format, index, out token, out var unit))
{
lengthConverter = e => e.Convert(unit);
}
else if (MatchesTokenBegin(format, index, "v", CanReadTokenUntilNextSeparator, out token))
{
valueFormat = token.Substring(1);
}
else if (MatchesTokenBegin(format, index, "u", CanReadTokenUntilNextSeparator, out token))
{
unitFormat = token.Substring(1);
}
else
{
token = new string(format[index], 1);
}
index += token.Length;
}
formatInfo = new CustomLengthFormatInfo(lengthConverter, valueFormat, unitFormat);
return(true);
}
