public static WeightAmount ParseWeight(string weight)
{
if (string.IsNullOrEmpty(weight))
{
return(null);
}
var match = Regex.Match(weight, @"(?<Value>\d+(\.\d{1,2})?)\s*(?<Unit>kg|g|lb|)", RegexOptions.IgnoreCase | RegexOptions.CultureInvariant | RegexOptions.ExplicitCapture);
if (!match.Success)
{
return(null);
}
int value;
if (!int.TryParse(match.Groups["Value"].Value.Replace(',', '.'), NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out value))
{
return(null);
}
var result = new WeightAmount {
Value = value
};
switch (match.Groups["Unit"].Value.ToLowerInvariant())
{
//case "kg":
default:
result.Unit = WeightUnit.Kilogram;
break;
case "g":
result.Value /= 1000;
result.Unit = WeightUnit.Kilogram;
break;
case "lb":
result.Unit = WeightUnit.Pounds;
break;
}
return(result);
}
public static string ToEditString(this WeightAmount @this)
{
if (@this == null)
{
return(string.Empty);
}
if (!string.IsNullOrEmpty(@this.Special))
{
return(@this.Special);
}
if (@this.Value < 1 && @this.Unit == WeightUnit.Kilogram)
{
return(string.Format("{0:0} g", @this.Value * 1000));
}
return(string.Format("{0} {1}", @this.Value, @this.Unit.ToDisplayString()));
}
