/// <summary>
/// Method to retrieve list of URL on the page
/// </summary>
/// <param name="pageText">HTML content of the page</param>
/// <param name="sourceUrl">URL of the page</param>
public void ParseLinks(string pageText, Uri sourceUrl)
{
MatchCollection matches = Regex.Matches(pageText, _LINK_REGEX);
for (int i = 0; i <= matches.Count - 1; i++)
{
Match anchorMatch = matches[i];
if (anchorMatch.Value != String.Empty)
{
string foundHref = null;
try
{
foundHref = anchorMatch.Value.Replace("href=\"", "");
foundHref = foundHref.Substring(0, foundHref.IndexOf("\""));
}
catch (Exception)
{
// add code to find the list of broken url's
}
Uri uriFoundHref = new Uri(foundHref);
if (!ValidUrls.Contains(uriFoundHref))
{
if (foundHref != "/")
{
if (IsExternalUrl(foundHref))
{
_externalUrls.Add(uriFoundHref);
}
else if (!IsAWebPage(foundHref))
{
_otherUrls.Add(uriFoundHref);
}
else
{
if (foundHref.Substring(foundHref.Length - 1) != "/")
{
foundHref = foundHref + "/";
}
if (!ValidUrls.Contains(uriFoundHref))
{
ValidUrls.Add(uriFoundHref);
}
}
}
}
}
}
}
private void Ready()
{
ColorConsole.WriteLine($"{UrlTrackerActorName} has become Ready", ConsoleColor.Red);
Receive <UnprocessedUrlsMessage>(message =>
{
List <Uri> distinctUrls = message.Urls.Distinct().ToList(); // TODO Can ToLower() be implemented? or will it result in false positives when visiting the Urls later? And what about case sensitive urls?
foreach (var url in distinctUrls)
{
#region Checks if url is valid
bool isUrlFromProjectDomain = url.OriginalString.Contains(ProjectDefinition.Domain.OriginalString);
// bool doesUrlContainAnyDisallowedWords = disallowedWords.Any(url.ToString().Contains); //TODO Add check for disallowed words?
if (isUrlFromProjectDomain == false ||
ValidUrls.Contains(url) == true)
{
continue;
}
ValidUrls.Add(url);
#endregion
#region Creates messages based on the project definition.
if (ProjectDefinition.IsFixedListOfUrls) // Move to 'Shepherd' Actor?!
{
if (ProjectDefinition.StartUrls.Contains(url))
{
Context.ActorSelection(ActorPaths.Browser).Tell(new UrlForUrlAndObjectParsingMessage(url)); // BrowserActor is load balancer
}
else
{
Context.ActorSelection(ActorPaths.Browser).Tell(new UrlForObjectParsingMessage(url)); // BrowserActor is load balancer
}
}
else
{
Context.ActorSelection(ActorPaths.Browser).Tell(new UrlForUrlAndObjectParsingMessage(url)); // BrowserActor is load balancer
}
#endregion
}
});
Receive <ProcessedUrlMessage>(message =>
{
ProcessedUrls.Add(message.Url);
});
Receive <UrlForUrlAndObjectParsingMessage>(message =>
{
});
}