internal void ChangeTopic(User u, string newTopic)
{
if (TopicSet != null)
{
Trace.WriteLine("IRCLib/Channel/ChangeTopic: " + newTopic);
TopicSet.Invoke(u, newTopic);
}
}
/// <summary>
/// Finds Topic in TopicSet using TOpicInformation
/// </summary>
/// <param name="topicSet">Topic set</param>
/// <param name="topicInfo">Topic information</param>
/// <returns>Topic with name/namespaces the same as in topicInfo</returns>
/// <remarks>Used for firing events via EventControlService.</remarks>
public static Topic Find(TopicSet topicSet, TopicInformation topicInfo)
{
Topic topic = null;
string topicString = topicInfo.TopicString;
string[] topics = topicString.Split('/');
if (topics.Length > 0)
{
string rootTopic = topics[0];
string[] segments = rootTopic.Split(':');
if (segments.Length == 2)
{
string prefix = segments[0];
string name = segments[1];
string ns = topicInfo.Namespaces.Where(NS => NS.Prefix == prefix).FirstOrDefault().Namespace;
Topic root = null;
foreach (Topic t in topicSet.Topics)
{
if (t.Name == name && t.Namespace == ns)
{
root = t;
break;
}
}
Topic current = root;
string lastNs = ns;
if (current != null)
{
for (int i = 1; i < topics.Length; i++)
{
string nextPart = topics[i];
segments = nextPart.Split(':');
if (segments.Length == 1)
{
name = segments[0];
ns = null;
}
else
{
name = segments[1];
prefix = segments[0];
if (!string.IsNullOrEmpty(prefix))
{
ns = topicInfo.Namespaces.Where(NS => NS.Prefix == prefix).FirstOrDefault().Namespace;
}
else
{
ns = null;
}
}
Topic foundChild = null;
foreach (Topic child in current.SubTopics)
{
bool nsMatch = (string.IsNullOrEmpty(ns) && string.IsNullOrEmpty(child.Namespace)) || (child.Namespace == ns);
if (nsMatch && child.Name == name)
{
foundChild = child;
break;
}
}
current = foundChild;
if (foundChild == null)
{
break;
}
}
topic = current;
}
}
}
return(topic);
}
