public static UserUnit operator *(UserUnit uu1, UserUnit uu2)
{
var uu = new UserUnit();
if (!String.IsNullOrWhiteSpace(uu1.NumeratorName))
{
uu.NumeratorName = String.IsNullOrWhiteSpace(uu.NumeratorName)? uu1.NumeratorName : uu.NumeratorName + "*" + uu1.NumeratorName;
}
if (!String.IsNullOrWhiteSpace(uu2.NumeratorName))
{
uu.NumeratorName = String.IsNullOrWhiteSpace(uu.NumeratorName) ? uu2.NumeratorName : uu.NumeratorName + "*" + uu2.NumeratorName;
}
if (!String.IsNullOrWhiteSpace(uu1.DenominatorName))
{
uu.DenominatorName = String.IsNullOrWhiteSpace(uu.DenominatorName) ? uu1.DenominatorName : uu.DenominatorName + "*" + uu1.DenominatorName;
}
if (!String.IsNullOrWhiteSpace(uu2.DenominatorName))
{
uu.DenominatorName = String.IsNullOrWhiteSpace(uu.DenominatorName) ? uu2.DenominatorName : uu.DenominatorName + "*" + uu2.DenominatorName;
}
uu.Numerator.AddRange(uu1.Numerator);
uu.Numerator.AddRange(uu2.Numerator);
uu.Denominator.AddRange(uu1.Denominator);
uu.Denominator.AddRange(uu2.Denominator);
uu.Multiplier = uu1.Multiplier * uu2.Multiplier;
uu.NumeratorPrefix = uu1.NumeratorPrefix * uu2.NumeratorPrefix;
uu.DenominatorPrefix = uu1.DenominatorPrefix * uu2.DenominatorPrefix;
uu.DimensionVector = uu1.DimensionVector + uu2.DimensionVector;
return(uu);
}
public async Task Subscribe(string topic, string toUnit, Func <string, object[], CancellationToken, Task> answerCallback)
{
this.topic = topic;
this.toUnit = await unitFactory.Parse(toUnit);
this.answerCallback = answerCallback;
FromUnit = await unitFactory.Parse(topic.Split("/").Last().Replace("%F2", "/"));
if (this.toUnit.DimensionVector != FromUnit.DimensionVector)
{
throw new InvalidOperationException("Units do not have the same dimension vector");
}
subscribtionId = await mqttClientManager.Subscribe(topic, HandleNewMessage);
}
private async Task <UserUnit> ParseSimpleUnit(string input)
{
FindPrefix(input, out var hasPrefix, out var prefixFactor);
if (hasPrefix)
{
input = input.Replace(prefixFactor?.Item1, "");
}
var dbUnit = await db.SelectUnit(input);
var uu = new UserUnit(name: input,
numeratorPrefixes: hasPrefix ? (prefixFactor?.Item2) : ConversionFactor.One,
denominatorPrefixes: ConversionFactor.One,
multiplier: dbUnit.ConversionMultiplier,
offset: dbUnit.ConversionOffset,
dv: dbUnit.DimensionVector);
return(uu);
}
private async Task <UserUnit> ParseFractionPart(string input, UserUnit uu, bool isNumerator)
{
var parts = input.Split("*");
foreach (var part in parts)
{
FindPrefix(part, out var hasPrefix, out var prefixFactor);
if (part.Contains("^"))
{
return(await SeperatePowers(uu, part, hasPrefix, prefixFactor, isNumerator));
}
else
{
string partToAdd = part;
if (hasPrefix)
{
partToAdd = part.Replace(prefixFactor?.Item1, "");
}
var dbUnit = await db.SelectUnit(partToAdd);
UserUnit newUU = new UserUnit(name: partToAdd,
numeratorPrefixes: hasPrefix ? (prefixFactor?.Item2) : ConversionFactor.One,
denominatorPrefixes: ConversionFactor.One,
multiplier: dbUnit.ConversionMultiplier,
offset: 0,
dv: dbUnit.DimensionVector);
if (isNumerator)
{
uu *= newUU;
}
else
{
uu /= newUU;
}
}
}
return(uu);
}
public async Task <UserUnit> Parse(string input)
{
var uu = new UserUnit();
input = input.Replace(" ", "").Replace("\t", "").ToUpperInvariant();
if (!input.Contains("/") && !input.Contains("*") && !input.Contains("^"))
{
uu = await ParseSimpleUnit(input);
}
else
{
uu = await ParseFractionPart(input.Split("/")[0], uu, true);
if (input.Contains("/"))
{
uu = await ParseFractionPart(input.Split("/")[1], uu, false);
}
}
return(uu);
}
private async Task <UserUnit> SeperatePowers(UserUnit uu, string part, bool hasPrefix, (string, ConversionFactor)?prefixFactor, bool isNumerator)
