public static IEnumerable <IRecordedMessage> InTopic(this IEnumerable <IRecordedMessage> messages, string topicNamePattern)
{
if (RosNameRegex.IsGlobalPattern(topicNamePattern))
{
return(InGlobalTopic(messages, topicNamePattern));
}
else
{
return(InRelativeTopic(messages, topicNamePattern));
}
}
public static IEnumerable <IGrouping <string, IRecordedMessage <TType> > > GroupByNamespace <TType>(this IEnumerable <IRecordedMessage <TType> > messages, string namespacePattern)
{
// Do not use NamespacePattern here because we need an exact match on the namespace
// and not on a topic in the namespace.
var regex = RosNameRegex.Create(namespacePattern);
var filteredNamespaces = messages
.GroupByNamespace()
.Where(g => regex.IsMatch(g.Key));
return(filteredNamespaces);
}
private void InitializeRegex()
{
var namespacePattern = Pattern;
if (!namespacePattern.EndsWith(RosNameRegex.AnyPlaceholder))
{
if (!namespacePattern.EndsWith("/"))
{
namespacePattern += "/";
}
namespacePattern += RosNameRegex.AnyPlaceholder;
}
_regex = RosNameRegex.Create(namespacePattern);
}
public static bool IsInTopic(this IRecordedMessage message, string topicNamePattern)
{
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
if (RosNameRegex.IsGlobalPattern(topicNamePattern))
{
return(IsInGlobalTopic(message, topicNamePattern));
}
else
{
return(IsInRelativeTopic(message, topicNamePattern));
}
}
private static bool IsInRelativeTopic(this IRecordedMessage message, string relativeTopicNamePattern,
RosNameRegexCache regexCache = null)
{
var scopedMessage = message as INamespaceScopedTopicMessage <IRecordedMessage>;
if (scopedMessage == null)
{
throw new InvalidRosNamePatternException(
"Relative topic name patterns are only supported if messages were filtered by namespace before.");
}
var globalName = scopedMessage.NamespacePattern + "/" + relativeTopicNamePattern;
var regex = regexCache != null
? regexCache.GetOrCreate(globalName)
: RosNameRegex.Create(globalName);
return(regex.IsMatch(message.Topic));
}
private static IEnumerable <IRecordedMessage> InGlobalTopic(IEnumerable <IRecordedMessage> messages, string globalTopicPattern)
{
var regex = RosNameRegex.Create(globalTopicPattern);
return(messages.Where(m => regex.IsMatch(m.Topic)));
}
private static bool IsInGlobalTopic(this IRecordedMessage message, string globalTopicNamePattern)
{
var regex = RosNameRegex.Create(globalTopicNamePattern);
return(regex.IsMatch(message.Topic));
}