public void Crawl()
{
SpiderProcess.Seed2Queue(urlQueue, Setting);
while (true)
{
Workers.WorkersFreeEvent.WaitOne();
if (!urlQueue.HasValue)
{
break;
}
}
}
public void WorkerAction()
{
var result = urlQueue.DeQueue();
if (result != null)
{
if (result.Depth < Setting.Depth)
{
try
{
var pageData = SpiderProcess.UrlRead(result.Url, Setting);
OnDataReceivedEventHandler(this, new Event.DataReceivedEventArgs(result.Url));
Regex r = new Regex(pattern, RegexOptions.IgnoreCase);
MatchCollection m = r.Matches(pageData);
foreach (var url in m)
{
var U = url.ToString();
if (SpiderProcess.UrlFilter(U, Setting))
{
continue;
}
if (SpiderProcess.UrlMatch(U, Setting))
{
OnAddUrlEventHandler(this, new Event.AddUrlEventArgs(U, result.Depth));
}
}
}
catch (Exception e)
{
if (ErrorEventHandler != null)
{
OnErrorEventHandler(this, new Event.ErrorEventArgs(result.Url, e.Message));
}
}
}
}
}
public void WorkerAction()
{
var result = urlQueue.DeQueue();
if (result != null)
{
if (result.Depth < Setting.Depth)
{
try
{
string pageData = null;
using (var dataStream = SpiderProcess.UrlReadData(result.Url, Setting))
{
const int buffSize = 40960;
var buff = new byte[buffSize];
int bytes = 0;
List <byte> recv = new List <byte>();
while ((bytes = dataStream.Read(buff, 0, buffSize)) != 0)
{
if (bytes != buffSize)
{
var ToBuff = new byte[bytes];
Array.Copy(buff, ToBuff, bytes);
recv.AddRange(ToBuff);
}
else
{
recv.AddRange(buff);
}
}
var data = recv.ToArray();
OnDataReceivedEventHandler(this, new Event.DataReceivedEventArgs(result.Url, data));
pageData = Encoding.UTF8.GetString(data);
}
Regex r = new Regex(pattern, RegexOptions.IgnoreCase);
MatchCollection m = r.Matches(pageData);
foreach (var url in m)
{
var U = url.ToString();
if (SpiderProcess.UrlFilter(U, Setting))
{
continue;
}
if (SpiderProcess.UrlMatch(U, Setting))
{
OnAddUrlEventHandler(this, new Event.AddUrlEventArgs(U, result.Depth));
}
}
}
catch (Exception e)
{
if (ErrorEventHandler != null)
{
OnErrorEventHandler(this, new Event.ErrorEventArgs(result.Url, e.Message));
}
}
}
}
}
