public FormattedUnit FindUnitFromUrl(string url)
{
// from "https://www.unitcandy.com?12.345m"
// find 12.345 meters
FormattedUnit result = null;
int posQuestionMark = url.IndexOf('?');
int posAmpersand = url.IndexOf('&');
string inputstring = string.Empty;
if (posQuestionMark >= 0)
{
if (posAmpersand < 0)
{
inputstring = url.Substring(posQuestionMark).TrimStart('?');
}
else if (posAmpersand > posQuestionMark)
{
inputstring = url.Substring(posQuestionMark, posAmpersand - posQuestionMark).TrimStart('?');
}
}
if (!string.IsNullOrWhiteSpace(inputstring))
{
result = FindUnit(inputstring, null);
}
return(result);
}
public FormattedUnit FindUnit(string inputstring, string unitName)
{
FormattedUnit result = null;
if (!string.IsNullOrWhiteSpace(unitName))
{
string remainder;
var number = UnitConverterUtility.ParseDouble(inputstring, out remainder);
if (number.HasValue)
{
if (string.IsNullOrWhiteSpace(remainder))
{
inputstring = inputstring + unitName;
}
else
{
inputstring = inputstring.Replace(remainder, unitName);
}
}
}
IEnumerable <IUnit> units;
UnitConverterUtility.TryParseUnits(inputstring, out units);
if (units != null)
{
if (units.Any())
{
result = (FormattedUnit)(Unit)units.First();
}
}
return(result);
}
public List <FormattedUnit> RecalculateString(string unitName, string unitValue)
{
var result = new List <FormattedUnit>();
// ensure that the unit name and unit value is okay
if (string.IsNullOrEmpty(unitName) || string.IsNullOrEmpty(unitValue))
{
throw new Exception("The unit name or the unit value is empty!");
}
UnitID?unitID = unitName.GetUnitID();
if (unitID.HasValue == false)
{
throw new Exception(string.Format("The unit name '{0}' is unknown!", unitName));
}
// find the source unit and all other units of the same type
var sourceUnit = WebManager.GetUnit(unitID.Value);
var unitType = WebManager.GetUnit(unitID.Value).Type;
// if user entered a number, recalculate all other units
int?roundToDecimals = null;
sourceUnit.Magnitude = double.NaN;
var units = WebManager.GetUnits(unitType);
var parts = WebManager.GetStringParts(unitValue);
foreach (IUnit unit in units)
{
string unitvalue = string.Empty;
foreach (var part in parts)
{
string text = part.Item1;
bool isNumber = part.Item2;
if (isNumber)
{
sourceUnit.Magnitude = double.Parse(text);
roundToDecimals = sourceUnit.GetDecimalPlaces() + 4;
var currentUnit = WebManager.Recalculate(sourceUnit).First(p => p.ID == unit.ID) as Unit;
if (roundToDecimals.HasValue)
{
var placesBeforeDecimalPoint = currentUnit.GetPlacesBeforeDecimalPoint();
if (placesBeforeDecimalPoint > 4)
{
roundToDecimals = placesBeforeDecimalPoint;
}
var scientific = currentUnit.ToScientificNotation(roundToDecimals.Value);
currentUnit.Magnitude = scientific.ToDouble();
}
unitvalue += ((FormattedUnit)currentUnit).UnitValue;
}
else
{
unitvalue += text;
}
}
FormattedUnit formattedUnit = (FormattedUnit)(Unit)unit;
formattedUnit.UnitValue = unitvalue;
result.Add(formattedUnit);
}
return(result);
}
