public OverwriteDialogResult GetOverwrite(IVirtualItem source, IVirtualItem dest)
{
if (this.CompareOperator == Compare.Always)
{
return this.OverwriteResult;
}
if (((this.CompareOperator != Compare.Never) && (source != null)) && (dest != null))
{
int num;
if (!(source.IsPropertyAvailable(this.PropertyId) && dest.IsPropertyAvailable(this.PropertyId)))
{
return OverwriteDialogResult.None;
}
switch (this.PropertyId)
{
case 7:
case 8:
case 9:
{
DateTime time = (DateTime) source[8];
DateTime time2 = (DateTime) dest[8];
TimeSpan span = (TimeSpan) (time2 - time);
num = Math.Sign((long) (span.Ticks / 0x989680L));
break;
}
default:
num = Comparer.DefaultInvariant.Compare(dest[this.PropertyId], source[this.PropertyId]);
break;
}
switch (this.CompareOperator)
{
case Compare.Equal:
return ((num == 0) ? this.OverwriteResult : OverwriteDialogResult.None);
case Compare.Greater:
return ((num > 0) ? this.OverwriteResult : OverwriteDialogResult.None);
case Compare.GreaterEqual:
return ((num >= 0) ? this.OverwriteResult : OverwriteDialogResult.None);
case Compare.Less:
return ((num < 0) ? this.OverwriteResult : OverwriteDialogResult.None);
case Compare.LessEqual:
return ((num <= 0) ? this.OverwriteResult : OverwriteDialogResult.None);
case Compare.NotEqual:
return ((num != 0) ? this.OverwriteResult : OverwriteDialogResult.None);
}
}
return OverwriteDialogResult.None;
}
public OverwriteDialogResult GetOverwrite(IVirtualItem source, IVirtualItem dest)
{
if ((source != null) && (dest != null))
{
if (!(source.IsPropertyAvailable(this.PropertyId) && dest.IsPropertyAvailable(this.PropertyId)))
{
return OverwriteDialogResult.None;
}
object a = source[this.PropertyId];
if ((Comparer.DefaultInvariant.Compare(a, this.Value) == 0) && (Comparer.DefaultInvariant.Compare(a, dest[this.PropertyId]) == 0))
{
return this.OverwriteResult;
}
}
return OverwriteDialogResult.None;
}
private void CopyItem(IVirtualItem sourceItem, IVirtualFolder destFolder, IGetStream getSourceStream, List<IVirtualItem> skippedItems)
{
Exception exception;
object obj2;
CopyItemAction next = CopyItemAction.Next;
IChangeVirtualFile DestFile = null;
try
{
if (!(sourceItem is IChangeVirtualFile))
{
throw new ItemChangeNotSupportedException();
}
ICreateVirtualFile file = destFolder as ICreateVirtualFile;
if (file == null)
{
throw new WarningException(string.Format(Resources.sCannotCopyToBasicFolder, destFolder.FullName));
}
DestFile = file.CreateFile(this.CreateNewName(sourceItem));
OverwriteDialogResult Overwrite = OverwriteDialogResult.Overwrite;
do
{
string str;
Overwrite = this.BeforeCopy((IVirtualFile) sourceItem, DestFile, out str);
switch (Overwrite)
{
case OverwriteDialogResult.Rename:
DestFile = file.CreateFile(str);
break;
case OverwriteDialogResult.Skip:
skippedItems.Add(sourceItem);
lock ((obj2 = this.FSnapshotLock))
{
this.FSkippedCount++;
if (sourceItem.IsPropertyAvailable(3))
{
this.FTotalProcessed.AddProcessedSize(Convert.ToInt64(sourceItem[3]));
}
}
return;
case OverwriteDialogResult.Abort:
base.CancelAsync();
return;
}
}
while (((Overwrite != OverwriteDialogResult.Append) && (Overwrite != OverwriteDialogResult.Resume)) && (Overwrite != OverwriteDialogResult.Overwrite));
if (sourceItem.Equals(DestFile))
{
throw new WarningException(string.Format(Resources.sCannotCopyFileToItself, sourceItem.FullName));
}
IChangeVirtualFile CurrentFile = (IChangeVirtualFile) sourceItem;
IChangeVirtualItem item = sourceItem as IChangeVirtualItem;
IChangeVirtualItem destItem = DestFile as IChangeVirtualItem;
if ((this.CheckOption(CopyWorkerOptions.DeleteSource) && (item != null)) && item.CanMoveTo(destFolder))
{
if (this.MoveItem(item, destFolder) == null)
{
next = CopyItemAction.Skip;
}
lock ((obj2 = this.FSnapshotLock))
{
this.FTotalProcessed.AddProcessedSize(Convert.ToInt64(CurrentFile[3]));
}
}
else
{
if (!(!this.CheckOption(CopyWorkerOptions.CheckFreeSpace) || this.CheckDestFreeSpace(Overwrite, CurrentFile, DestFile, destFolder)))
{
next = CopyItemAction.Skip;
}
if (next == CopyItemAction.Next)
{
long num = 0L;
FileAttributes attributes = 0;
bool flag = false;
long position = 0L;
ISetOwnerWindow window = CurrentFile as ISetOwnerWindow;
if (window != null)
{
window.Owner = this.Owner;
}
try
{
if ((destItem != null) && destItem.Exists)
{
num = Convert.ToInt64(DestFile[3]);
attributes = DestFile.Attributes;
VirtualItemHelper.ResetSystemAttributes(DestFile);
}
else
{
Overwrite = OverwriteDialogResult.Overwrite;
}
bool flag2 = (((this.CheckOption(CopyWorkerOptions.UseSystemCopy) && OS.IsWinNT) && ((Overwrite == OverwriteDialogResult.Overwrite) && (getSourceStream == null))) && (CurrentFile is CustomFileSystemFile)) && (DestFile is CustomFileSystemFile);
if (flag2)
{
try
{
if (this.CopySystem(CurrentFile, DestFile))
{
VirtualItemHelper.ResetSystemAttributes(DestFile);
}
else
{
next = CopyItemAction.Skip;
}
}
catch (UnauthorizedAccessException)
{
IElevatable elevatable = CurrentFile as IElevatable;
bool flag3 = (elevatable != null) && elevatable.CanElevate;
if (!flag3)
{
elevatable = DestFile as IElevatable;
flag3 = (elevatable != null) && elevatable.CanElevate;
}
if (!flag3)
{
throw;
}
flag2 = false;
}
}
if (!flag2)
{
bool asyncCopy = this.CheckOption(CopyWorkerOptions.AsyncCopy);
if (this.CheckOption(CopyWorkerOptions.AutoAsyncCopy))
{
IGetVirtualVolume parent = CurrentFile.Parent as IGetVirtualVolume;
IGetVirtualVolume volume2 = destFolder as IGetVirtualVolume;
asyncCopy = ((volume2 != null) && (parent != null)) && ((volume2.Location != parent.Location) || (volume2.VolumeType != parent.VolumeType));
}
Stream InStream = null;
bool DoAsyncCopy = asyncCopy;
long StartOffset = 0L;
if (Overwrite == OverwriteDialogResult.Resume)
{
StartOffset = num;
}
next = this.OpenItemStream(sourceItem, sourceItem, DestFile, delegate {
if (getSourceStream != null)
{
InStream = getSourceStream.GetStream();
if (StartOffset > 0L)
{
InStream.Seek(StartOffset, SeekOrigin.Begin);
}
}
else
{
InStream = CurrentFile.Open(FileMode.Open, FileAccess.Read, FileShare.Read, FileOptions.SequentialScan | (DoAsyncCopy ? FileOptions.Asynchronous : FileOptions.None), StartOffset);
}
});
using (InStream)
{
if ((InStream != null) && (next == CopyItemAction.Next))
{
DoAsyncCopy = DoAsyncCopy && (!InStream.CanSeek || (InStream.Length > this.Buffer1.Length));
Stream OutStream = null;
next = this.OpenItemStream(DestFile, sourceItem, DestFile, delegate {
OutStream = DestFile.Open((Overwrite == OverwriteDialogResult.Overwrite) ? FileMode.Create : FileMode.Append, FileAccess.Write, FileShare.None, FileOptions.SequentialScan | (DoAsyncCopy ? FileOptions.Asynchronous : FileOptions.None), 0L);
});
using (OutStream)
{
if ((OutStream != null) && (next == CopyItemAction.Next))
{
flag = true;
FileStream stream = InStream as FileStream;
DoAsyncCopy &= ((stream == null) || stream.IsAsync) && (InStream != Stream.Null);
FileStream stream2 = OutStream as FileStream;
DoAsyncCopy &= ((stream2 == null) || stream2.IsAsync) && (OutStream != Stream.Null);
if (DoAsyncCopy)
{
next = this.CopyStreamAsync(InStream, OutStream, CurrentFile, DestFile);
}
else
{
next = this.CopyStream(InStream, OutStream, CurrentFile, DestFile);
}
if (OutStream.CanSeek)
{
if (Overwrite == OverwriteDialogResult.Append)
{
position = OutStream.Position - num;
}
else
{
position = OutStream.Position;
}
}
}
}
}
}
if (!((next != CopyItemAction.Next) || base.CancellationPending))
{
this.CopyAlternateStreams(CurrentFile, DestFile, asyncCopy);
}
}
if ((next == CopyItemAction.Next) && !base.CancellationPending)
{
if (destItem != null)
{
next = this.SetOutFileAttributes(sourceItem, destItem, true, this.CheckOption(CopyWorkerOptions.CopyItemTime));
}
if (((this.CheckOption(CopyWorkerOptions.DeleteSource) && (next == CopyItemAction.Next)) && (item != null)) && !this.DeleteItem(CurrentFile))
{
next = CopyItemAction.Skip;
}
this.RaiseAfterCopy(sourceItem, DestFile);
}
}
catch (AbortException)
{
next = CopyItemAction.SkipUndoDest;
base.CancelAsync();
}
catch (Exception exception3)
{
exception = exception3;
next = this.CopyItemError(null, sourceItem, DestFile, flag ? AvailableItemActions.CanUndoDestination : AvailableItemActions.None, exception);
}
if ((next != CopyItemAction.Next) && CurrentFile.IsPropertyAvailable(3))
{
lock ((obj2 = this.FSnapshotLock))
{
this.FTotalProcessed.AddProcessedSize(Convert.ToInt64(CurrentFile[3]) - position);
}
}
if (flag && (next == CopyItemAction.SkipUndoDest))
{
if (Overwrite != OverwriteDialogResult.Overwrite)
{
using (Stream stream3 = DestFile.Open(FileMode.Open, FileAccess.Write, FileShare.None, FileOptions.None, 0L))
{
if (stream3.CanSeek && stream3.CanWrite)
{
stream3.SetLength(num);
}
}
if ((destItem != null) && destItem.CanSetProperty(6))
{
destItem[6] = attributes;
}
}
else if (destItem != null)
{
destItem.Delete(false);
}
}
}
}
}
catch (Exception exception4)
{
exception = exception4;
next = this.CopyItemError(null, sourceItem, DestFile, AvailableItemActions.None, exception);
}
if (next != CopyItemAction.Next)
{
skippedItems.Add(sourceItem);
lock ((obj2 = this.FSnapshotLock))
{
this.FSkippedCount++;
}
}
else
{
lock ((obj2 = this.FSnapshotLock))
{
this.FProcessedCount++;
}
}
}
private static void SetProperty(IVirtualItem sourceItem, IChangeVirtualItem destItem, int property)
{
if (destItem.CanSetProperty(property) && sourceItem.IsPropertyAvailable(property))
{
object obj2 = sourceItem[property];
if (obj2 != null)
{
destItem[property] = obj2;
}
}
}
private CopyItemAction SetOutFileAttributes(IVirtualItem sourceItem, IChangeVirtualItem destItem, bool setAttributes, bool setTime)
{
ChangeItemAction action;
Debug.Assert(setAttributes || setTime);
Label_000F:;
try
{
IUpdateVirtualProperty property = destItem as IUpdateVirtualProperty;
if (property != null)
{
property.BeginUpdate();
}
if (setAttributes)
{
if (destItem.CanSetProperty(6))
{
FileAttributes normal = FileAttributes.Normal;
if (sourceItem.IsPropertyAvailable(6))
{
normal = sourceItem.Attributes & ~(FileAttributes.Encrypted | FileAttributes.Compressed);
if (this.CheckOption(CopyWorkerOptions.ClearROFromCD))
{
IGetVirtualVolume parent = sourceItem.Parent as IGetVirtualVolume;
if ((parent != null) && (parent.VolumeType == DriveType.CDRom))
{
normal &= ~FileAttributes.ReadOnly;
}
}
}
destItem[6] = normal | (destItem.Attributes & (FileAttributes.Encrypted | FileAttributes.Compressed));
}
if (this.CheckOption(CopyWorkerOptions.CopyACL))
{
SetProperty(sourceItem, destItem, 14);
}
}
if (setTime)
{
SetProperty(sourceItem, destItem, 7);
SetProperty(sourceItem, destItem, 9);
SetProperty(sourceItem, destItem, 8);
}
if (property != null)
{
property.EndUpdate();
}
return CopyItemAction.Next;
}
catch (UnauthorizedAccessException exception)
{
action = this.ChangeItemError(destItem, sourceItem, destItem, AvailableItemActions.CanRetryOrIgnore, exception);
}
catch (IOException exception2)
{
action = this.ChangeItemError(destItem, sourceItem, destItem, AvailableItemActions.CanRetryOrIgnore, exception2);
}
switch (action)
{
case ChangeItemAction.Retry:
goto Label_000F;
case ChangeItemAction.Ignore:
return CopyItemAction.Next;
case ChangeItemAction.Skip:
return CopyItemAction.Skip;
case ChangeItemAction.Cancel:
base.CancelAsync();
return CopyItemAction.Skip;
}
throw new InvalidEnumArgumentException();
}
private void UpdateTotalSize(IVirtualItem item)
{
object obj2 = item[3];
if (obj2 != null)
{
this.TotalSize += Convert.ToInt64(obj2);
}
if (item.IsPropertyAvailable(5))
{
obj2 = item[5];
}
if (obj2 != null)
{
this.TotalCompressedSize += Convert.ToInt64(obj2);
}
}
private static CompareResult CompareProperties(IVirtualItem a, IVirtualItem b, int propertyId)
{
int num;
if (!((((a != null) && (b != null)) && a.IsPropertyAvailable(propertyId)) && b.IsPropertyAvailable(propertyId)))
{
return CompareResult.Unknown;
}
switch (propertyId)
{
case 7:
case 8:
case 9:
{
DateTime time = (DateTime) a[8];
DateTime time2 = (DateTime) b[8];
TimeSpan span = (TimeSpan) (time - time2);
num = Math.Sign((long) (span.Ticks / 0x989680L));
break;
}
default:
num = Comparer.DefaultInvariant.Compare(a[propertyId], b[propertyId]);
break;
}
if (num < 0)
{
return CompareResult.Less;
}
if (num > 0)
{
return CompareResult.Greater;
}
return CompareResult.Equal;
}