public override void HashConfigValues(Action <object> write)
{
write(Delimiter);
write(TextQualifier);
write(Header);
TrueStrings?.WriteToConfigHash(write);
FalseStrings?.WriteToConfigHash(write);
NullStrings?.WriteToConfigHash(write);
}
internal override object ConvertStringToType(string stringToConvert, Type targetType, IFormatProvider formatProvider)
{
if (targetType != typeof(bool))
{
throw new InvalidCastException($"{nameof(DataColumnBooleanAttribute)} can only be used on attributes of type {typeof(bool)}.");
}
if (TrueStrings == null && FalseStrings == null)
{
// No preconfigured strings exists, use regular conversion
return(Convert.ChangeType(stringToConvert, targetType, formatProvider));
}
var foundTrueStringMatch = TrueStrings?.Any(x => x.ToLower() == stringToConvert.ToLower());
var foundFalseStringMatch = FalseStrings?.Any(x => x.ToLower() == stringToConvert.ToLower());
if (foundTrueStringMatch.HasValue && foundFalseStringMatch.HasValue)
{
if (foundTrueStringMatch.Value && foundFalseStringMatch.Value)
{
throw new InvalidCastException($"Ambiguous configuration: Both true and false string contains the value {stringToConvert}.");
}
else if (!foundTrueStringMatch.Value && !foundFalseStringMatch.Value)
{
throw new InvalidCastException($"No matching conversion was found for value {stringToConvert}.");
}
}
if (foundTrueStringMatch.HasValue)
{
return(foundTrueStringMatch);
}
else
{
return(!foundFalseStringMatch);
}
}