/// <summary>
/// Returns the right part from the first ocurrence of the given substring (without the substring).
/// </summary>
/// <remarks>
/// Features driven by this set of rules:
/// <list type="bullet">
/// <item><description>null.RightFromFirst(*) --> null</description></item>
/// <item><description>null and string.Empty are always substrings of a not null string</description></item>
/// /// <item><description>string.Empty only contains itself and null</description></item>
/// <item><description>*.RightFromFirst(notFound) --> null</description></item>
/// </list>
/// </remarks>
public static string RightFromFirst(this SubstrExtensionPoint sp, string substring, StringComparison comparison = StringComparison.Ordinal)
{
string e = sp.ExtendedValue;
return(e.Safe(s =>
{
substring = substring.EmptyIfNull();
int indexOfSubstringEnd = s.IndexOf(substring, comparison) >= 0 ?
s.IndexOf(substring, comparison) + substring.Length :
-1;
return indexOfSubstringEnd < 0 ? null : sp.Right(s.Length - indexOfSubstringEnd);
}));
}
