/** Called by our worker thread, this function handles a single item in the queue. */
protected void WorkerCompute(QueueItem item)
{
// is it a directory?
if (Directory.Exists(item.fullpath))
{
string[] files = Directory.GetFileSystemEntries(item.fullpath);
foreach (string f in files)
{
//QueueItem(f,item.partialpath+"\\"+JustTheFileName(f));
Enqueue(new QueueItem(f, item.partialpath + "\\" + JustTheFileName(f)));
this.Invoke(new UpdateEnqueuedLabelDelegate(UpdateEnqueuedLabel), new object[1] {
queue.Count()
});
}
return;
}
// Console.WriteLine(item.partialpath);
// it's not a directory. Is it a md5 file?
if (IsMD5File(item.fullpath))
{
//Console.WriteLine("caught md5 file");
StreamReader sr = new StreamReader(item.fullpath);
string s;
// read each lkine. If the line looks like an md5 hash, add it
// to the database.
while ((s = sr.ReadLine()) != null)
{
Match m = Regex.Match(s, @"^([0-9a-fA-F]{32})\s+(.+)$", RegexOptions.None);
if (m.Success && m.Groups.Count == 3)
{
string p = m.Groups[2].Value.Trim();
string path = p.Replace("/", "\\");
string hash = m.Groups[1].Value.Trim().ToLower();
kb.AddRecord(path, hash);
}
}
sr.Close();
listView.Invoke(new EventHandler(this.ReverifyAllItems));
// don't return; we also compute the hash of the md5sum file. (why not?)
}
// compute the md5 hash
FileStream fsr = null;
try
{
currentlyProcessingLabel.Invoke(new SetCurrentlyProcessingDelegate(SetCurrentlyProcessing), new object[] { item.partialpath });
fsr = new FileStream(item.fullpath, FileMode.Open, FileAccess.Read);
item.size = fsr.Length;
// wrap the file system's stream in our progress stream. The progress stream
// updates the thermometer/progress bar as the file is read.
progStream = new ProgressStream(fsr, progressBar);
// compute the hash
// Is it just me, or is this MD5 routine slow?
System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
md5.Initialize();
byte[] hash = md5.ComputeHash(progStream);
progStream = null;
// we're done. Add the data to the screen
listView.Invoke(new AddFileToGridDelegate(AddFileToGrid), new object[] { item, ByteArrayToHexadecimalString(hash) });
md5.Clear();
}
catch (Exception e)
{
// did they click the abort button?
if (e.Message.Equals("aborted"))
{
queue.Clear();
this.Invoke(new UpdateEnqueuedLabelDelegate(UpdateEnqueuedLabel), new object[1] {
queue.Count()
});
}
else if (!quitting)
{
ReportError("Couldn't process " + item.fullpath + "\r\n\r\nIs it open by another application?");
}
return;
}
finally
{
currentlyProcessingLabel.Invoke(new SetCurrentlyProcessingDelegate(SetCurrentlyProcessing), new object[] { "(idle)" });
if (fsr != null)
{
fsr.Close();
}
}
}