private static bool RetrieveForkData(this Device device, ExecuteDeviceCommandAsyncTaskData data, IEnumerable <Fork> forksToRetrieve, string destinationDirectory, IEnumerable <string> fileNames)
{
var configuration = SingleInstanceApplication.Instance.GetConfiguration <Configuration>();
var succeeded = false;
var numForks = forksToRetrieve.Count();
var forkFilenames = fileNames == null ? null : fileNames.ToList();
var forkBeingRetrieved = 0;
foreach (var fork in forksToRetrieve)
{
if (data.AcceptCancelIfRequested())
{
break;
}
++forkBeingRetrieved;
if (data != null)
{
data.UpdateTaskProgress((double)forkBeingRetrieved / numForks, string.Format(Resources.Strings.DeviceMultistageCommand_BackupFileSystem_RetrievingFiles_Format, forkBeingRetrieved, numForks));
}
var bytesRemaining = (int)fork.Size;
var offset = 0;
succeeded = false;
using (var memory = new System.IO.MemoryStream())
{
do
{
const uint Address = 0u;
var bytesToRead = System.Math.Min(bytesRemaining, Device.TotalRAMSize);
succeeded = ReadForkToRam.Create(Address, fork.GlobalForkNumber, (uint)offset, bytesToRead).Execute <bool>(device.Port, data);
byte[] dataRead = null;
if (succeeded)
{
dataRead = (byte[])DownloadDataBlockFromRam.Create(Address, bytesToRead).Execute(device.Port, data, out succeeded);
}
if (succeeded)
{
memory.Write(dataRead, offset, bytesToRead);
bytesRemaining -= bytesToRead;
offset += bytesToRead;
}
}while (succeeded && (bytesRemaining > 0));
if (data != null)
{
data.UpdateTaskProgress((double)forkBeingRetrieved / numForks, string.Format(Resources.Strings.DeviceMultistageCommand_BackupFileSystem_SavingFiles_Format, forkBeingRetrieved, numForks));
}
memory.Seek(0, System.IO.SeekOrigin.Begin);
using (var tempFile = FileSystemFile.Inflate(memory))
{
var fileName = (forkFilenames == null) ? configuration.GetForkDataFileName(fork.GlobalForkNumber) : forkFilenames[forkBeingRetrieved - 1];
var forkPath = System.IO.Path.Combine(destinationDirectory, fileName);
forkPath = forkPath.EnsureUniqueFileName();
data.FailureMessage = forkPath;
System.IO.Directory.CreateDirectory(System.IO.Path.GetDirectoryName(forkPath));
try
{
// Test to see if this is a Fork containing a LUIGI file.
memory.Seek(0, System.IO.SeekOrigin.Begin);
LuigiFileHeader.Inflate(memory);
forkPath = System.IO.Path.ChangeExtension(forkPath, ProgramFileKind.LuigiFile.FileExtension());
}
catch (INTV.Core.UnexpectedFileTypeException)
{
// This is OK... we only want to execute certain functions if the file is a LUIGI file.
}
if (System.IO.File.Exists(forkPath))
{
var crcOfTarget = Crc32.OfFile(forkPath);
var crcOfSource = Crc32.OfFile(tempFile.FileInfo.FullName);
if (crcOfTarget != crcOfSource)
{
forkPath = forkPath.EnsureUniqueFileName();
System.IO.File.Copy(tempFile.FileInfo.FullName, forkPath);
}
}
else
{
System.IO.File.Copy(tempFile.FileInfo.FullName, forkPath);
}
fork.FilePath = forkPath;
}
}
if (!succeeded)
{
break;
}
}
return(succeeded);
}