public override void Run()
{
long x;
string id;
IFile destTemp;
ITempIdentityFileService destTempService;
IFile dest;
Stream srcStream = null, destStream = null;
IFileHashingService hasher;
string sourceHash, destTempHash;
try
{
lock (this.SyncLock)
{
m_TaskThread = Thread.CurrentThread;
if (m_TransferState != TransferState.NotStarted)
{
throw new InvalidOperationException();
}
SetTransferState(TransferState.Preparing);
ProcessTaskStateRequest();
}
id = m_Source.Address.Uri + m_Source.Length.ToString()
+ (m_Source.Attributes.CreationTime ?? DateTime.MinValue).ToBinary().ToString();
destTempService = (ITempIdentityFileService)m_Destination.GetService(new TempIdentityFileServiceType(id));
destTemp = destTempService.GetTempFile();
for (;;)
{
try
{
x = destTemp.Length;
}
catch (FileNotFoundException)
{
x = 0;
}
dest = m_Destination.ParentDirectory.ResolveFile("$TMP_" + m_Destination.Address.Name + "_" + Guid.NewGuid().ToString("N"));
try
{
if (x == m_Source.Length)
{
try
{
if (m_Source.IdenticalTo(destTemp, FileComparingFlags.CompareContents))
{
SetTransferState(TransferState.Copying);
ProcessTaskStateRequest();
m_Progress.RaiseValueChanged(m_Progress.CurrentValue, 0);
destTemp.MoveTo(dest, true);
if (!m_Source.IdenticalTo(dest, FileComparingFlags.CompareContents))
{
continue;
}
dest.RenameTo(m_Destination.Address.NameAndQuery, true);
m_BytesTransferred = m_Destination.Length;
m_Progress.RaiseValueChanged(m_Progress.CurrentValue, m_BytesTransferred);
SetTransferState(TransferState.Finished);
ProcessTaskStateRequest();
return;
}
}
catch (IOException)
{
}
}
srcStream = m_Source.GetContent().GetInputStream(FileShare.Read);
if (!srcStream.CanSeek)
{
destStream = destTemp.GetContent().GetOutputStream(FileMode.Create, FileShare.Read);
}
else
{
destStream = destTemp.GetContent().GetOutputStream(FileMode.Append, FileShare.Read);
SetTransferState(TransferState.Comparing);
ProcessTaskStateRequest();
hasher = (IFileHashingService)m_Source.GetService(new FileHashingServiceType("md5"));
sourceHash = hasher.ComputeHash(0, destStream.Length).TextValue;
hasher = (IFileHashingService)destTemp.GetService(new FileHashingServiceType("md5"));
destTempHash = hasher.ComputeHash().TextValue;
if (sourceHash != destTempHash)
{
destStream.Close();
destStream = destTemp.GetContent().GetOutputStream(FileMode.Create, FileShare.Read);
}
else
{
m_Offset = destStream.Length;
if (m_Offset > 0)
{
srcStream = new PartialStream(srcStream, m_Offset);
}
}
}
m_Progress.RaiseValueChanged(0, m_Offset);
ProcessTaskStateRequest();
m_Pump = new StreamPump(srcStream, destStream, true, false, m_ServiceType.BufferSize);
m_Pump.TaskStateChanged += new TaskEventHandler(Pump_TaskStateChanged);
SetTransferState(TransferState.Transferring);
ProcessTaskStateRequest();
m_Pump.Run();
if (m_Pump.TaskState == TaskState.Stopped)
{
throw new StopRequestedException();
}
SetTransferState(TransferState.Copying);
ProcessTaskStateRequest();
}
finally
{
if (srcStream != null)
{
Routines.IgnoreExceptions(delegate
{
srcStream.Close();
});
}
if (destStream != null)
{
Routines.IgnoreExceptions(delegate
{
destStream.Close();
});
}
}
break;
}
SetTransferState(TransferState.Tidying);
destTemp.MoveTo(dest, true);
///
/// Aquire an UpdateContext for the attributes
/// so that all updates to the attributes are
/// commited in a single operation
///
using (dest.Attributes.AquireUpdateContext())
{
foreach (string s in this.m_ServiceType.AttributesToTransfer)
{
dest.Attributes[s] = m_Source.Attributes[s];
}
}
dest.RenameTo(m_Destination.Address.Name, true);
SetTransferState(TransferState.Finished);
}
finally
{
if (m_TransferState != TransferState.Stopped)
{
SetTransferState(TransferState.Finished);
}
}
}
