/// <summary>
/// Add <paramref name="tldRule"/> to <paramref name="structure"/>.
/// </summary>
/// <param name="structure">The structure to appened the rule.</param>
/// <param name="tldRule">The rule to append.</param>
public static void AddRule(this DomainDataStructure structure, [NotNull] TldRule tldRule)
{
List <string> parts = tldRule.Name.Split('.').Reverse().ToList();
for (int i = 0; i < parts.Count; i++)
{
string domainPart = parts[i];
if (parts.Count - 1 > i)
{
//Check if domain exists
if (!structure.Nested.ContainsKey(domainPart))
{
structure.Nested.Add(domainPart, new DomainDataStructure(domainPart));
}
structure = structure.Nested[domainPart];
continue;
}
//Check if domain exists
if (structure.Nested.ContainsKey(domainPart))
{
structure.Nested[domainPart].TldRule = tldRule;
continue;
}
structure.Nested.Add(domainPart, new DomainDataStructure(domainPart, tldRule));
}
}
/// <summary>
/// Add all the rules in <paramref name="tldRules"/> to <paramref name="structure"/>.
/// </summary>
/// <param name="structure">The structure to appened the rule.</param>
/// <param name="tldRules">The rules to append.</param>
public static void AddRules(this DomainDataStructure structure, [NotNull] IEnumerable <TldRule> tldRules)
{
foreach (TldRule tldRule in tldRules)
{
structure.AddRule(tldRule);
}
}
private DomainName GetDomainFromParts(string domain, [NotNull] List <string> parts)
{
if (parts == null || parts.Count == 0 || parts.Any(x => x.Equals(string.Empty)))
{
throw new ParseException("Invalid domain part detected");
}
DomainDataStructure structure = _domainDataStructure;
List <TldRule> matches = new List <TldRule>();
FindMatches(parts, structure, matches);
//Sort so exceptions are first, then by biggest label count (with wildcards at bottom)
IOrderedEnumerable <TldRule> sortedMatches = matches.OrderByDescending(x => x.Type == TldRuleType.WildcardException ? 1 : 0)
.ThenByDescending(x => x.LabelCount)
.ThenByDescending(x => x.Name);
TldRule winningRule = sortedMatches.FirstOrDefault();
//Domain is TLD
if (winningRule != null && parts.Count == winningRule.LabelCount)
{
parts.Reverse();
string tld = string.Join(".", parts);
if (winningRule.Type == TldRuleType.Wildcard)
{
if (tld.EndsWith(winningRule.Name.Substring(1)))
{
throw new ParseException("Domain is a TLD according public suffix", winningRule);
}
}
else
{
if (tld.Equals(winningRule.Name))
{
throw new ParseException("Domain is a TLD according public suffix", winningRule);
}
}
throw new ParseException($"Unknown domain {domain}");
}
return(new DomainName(domain, winningRule));
}
private static void FindMatches([NotNull] IEnumerable <string> parts, [NotNull] DomainDataStructure structure, List <TldRule> matches)
{
if (structure.TldRule != null)
{
matches.Add(structure.TldRule);
}
string part = parts.FirstOrDefault();
if (string.IsNullOrEmpty(part))
{
return;
}
if (structure.Nested.TryGetValue(part, out DomainDataStructure foundStructure))
{
FindMatches(parts.Skip(1), foundStructure, matches);
}
if (structure.Nested.TryGetValue("*", out foundStructure))
{
FindMatches(parts.Skip(1), foundStructure, matches);
}
}
/// <summary>
/// Creates a DomainParser based on an already initialized tree.
/// </summary>
/// <param name="initializedDataStructure">An already initialized tree.</param>
/// <param name="domainNormalizer">An <see cref="IDomainNormalizer"/>.</param>
public DomainParser(DomainDataStructure initializedDataStructure, IDomainNormalizer domainNormalizer = null)
: this(domainNormalizer)
{
_domainDataStructure = initializedDataStructure;
}