/// <summary>
/// Gets the value.
/// </summary>
/// <param name="sectionName">Name of the section.</param>
/// <param name="keyName">Name of the key.</param>
/// <param name="defaultValue">if set to <c>true</c> [default value].</param>
/// <param name="booleanConverter">The boolean converter.</param>
/// <returns></returns>
public virtual bool GetValue(string sectionName, string keyName, bool defaultValue,
BooleanConverter booleanConverter = null)
{
booleanConverter = booleanConverter ?? Settings.BooleanConverter;
var booleanValue = GetRawValue <string>(sectionName, keyName, null);
if (string.IsNullOrWhiteSpace(booleanValue))
{
SetValue(sectionName, keyName,
null == booleanConverter
// if some day Boolean.ToString(IFormatProvider) will work
// https://msdn.microsoft.com/en-us/library/s802ct92(v=vs.110).aspx#Anchor_1
? defaultValue.ToString(Settings.Culture).ToLowerInvariant()
: booleanConverter.ConvertToString(defaultValue));
return(defaultValue);
}
#pragma warning disable IDE0046 // Convert to conditional expression
foreach (var converter in YesNoBoolConverters)
{
if (converter.Yes.Equals(booleanValue.Trim(), StringComparison.InvariantCultureIgnoreCase) ||
converter.No.Equals(booleanValue.Trim(), StringComparison.InvariantCultureIgnoreCase))
{
return(converter.Yes.Equals(booleanValue, StringComparison.InvariantCultureIgnoreCase));
}
}
#pragma warning restore IDE0046 // Convert to conditional expression
if (bool.TryParse(booleanValue, out var parseBoolean))
{
return(parseBoolean);
}
// if some day Boolean.ToString(IFormatProvider) will work
// https://msdn.microsoft.com/en-us/library/s802ct92(v=vs.110).aspx#Anchor_1
if (true.ToString(Settings.Culture).ToLowerInvariant().Equals(booleanValue, StringComparison.InvariantCultureIgnoreCase))
{
return(true);
}
if (booleanConverter == null || !booleanConverter.CanConvertFrom(typeof(string)))
{
return(defaultValue);
}
var value = booleanConverter.ConvertFrom(booleanValue);
return(value is bool convertedBoolean
? convertedBoolean
: defaultValue);
}
/// <summary>
/// Converts the string value to a boolean. Int32 values are able to be
/// parsed.
/// </summary>
/// <typeparam name = "T"></typeparam>
/// <param name = "value"></param>
/// <returns></returns>
private static T ConvertToBool <T>(string value)
{
// see if an int was used. 0 = false, anything else is true.
int result;
if (Int32.TryParse(value, out result))
{
return((T)(object)(result != 0));
}
// didn't use an int, pass off the the BooleanConverter. The
// BooleanConverter can't handle numbers and it is faster to check
// if it is an int than deal with the exception that the
// BooleanConverter would throw and then deal with converting from
// int.
var converter = new BooleanConverter();
return((T)converter.ConvertFrom(value));
}
