public void CreateDirectory(string path)
{
if (string.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
var mtpDevice = MtpDeviceManager.GetPortableDevice(path);
var folderOnlyPath = path.Replace($"{MtpPathInterpreter.GetMtpDeviceName(path)}{Path.DirectorySeparatorChar}",
string.Empty);
string lastExistentFolderPath = folderOnlyPath;
var mtpFolder =
mtpDevice.GetLastExistentFolder(ref lastExistentFolderPath);
if (lastExistentFolderPath == folderOnlyPath)
{
return;
}
if (mtpFolder == null || string.IsNullOrEmpty(lastExistentFolderPath))
{
mtpDevice.Disconnect();
throw new IOException();
}
var newMtpFolder = PortableDeviceFolder.Create(mtpDevice, mtpFolder, folderOnlyPath.Replace($"{lastExistentFolderPath}{Path.DirectorySeparatorChar}", String.Empty));
if (newMtpFolder == null)
{
mtpDevice.Disconnect();
throw new IOException();
}
}
public bool Exists(string path)
{
if (string.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
PortableDevice mtpDevice;
try
{
mtpDevice = MtpDeviceManager.GetPortableDevice(path);
}
catch (Exception e)
{
LoggingManager.LogSciendoSystemError(e);
return(false);
}
var mtpFile = mtpDevice.GetObject(path.Replace(MtpPathInterpreter.GetMtpDeviceName(path), string.Empty)) as PortableDeviceFile;
if (mtpFile == null)
{
mtpDevice.Disconnect();
return(false);
}
return(true);
}
public byte[] Read(string path)
{
if (string.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
var mtpDevice = MtpDeviceManager.GetPortableDevice(path);
if (!Exists(path))
{
throw new ArgumentException("Path does not exist.");
}
var mtpFile = mtpDevice.GetObject(path.Replace(MtpPathInterpreter.GetMtpDeviceName(path), string.Empty)) as PortableDeviceFile;
if (mtpFile == null)
{
mtpDevice.Disconnect();
throw new IOException("Path not accessible.");
}
IPortableDeviceResources resources;
mtpDevice.Content.Transfer(out resources);
PortableDeviceApiLib.IStream wpdStream;
uint optimalTransferSize = 0;
resources.GetStream(mtpFile.Id, ref PortableDevicePKeys.WPD_RESOURCE_DEFAULT, 0, ref optimalTransferSize, out wpdStream);
System.Runtime.InteropServices.ComTypes.IStream sourceStream = (System.Runtime.InteropServices.ComTypes.IStream)wpdStream;
MemoryStream targetStream = new MemoryStream();
unsafe
{
var buffer = new byte[1024];
int bytesRead;
do
{
sourceStream.Read(buffer, 1024, new IntPtr(&bytesRead));
targetStream.Write(buffer, 0, bytesRead);
} while (bytesRead > 0);
}
var len = targetStream.Length;
byte[] result = new byte[len];
targetStream.Position = 0;
targetStream.Read(result, 0, (int)len);
targetStream.Close();
resources.Cancel();
mtpDevice.Disconnect();
return(result);
}
private static PortableDevice GetMtpDevice(string path)
{
PortableDevice mtpDevice;
try
{
mtpDevice = MtpDeviceManager.GetPortableDevice(path);
}
catch (Exception e)
{
LoggingManager.LogSciendoSystemError(e);
return(null);
}
return(mtpDevice);
}
public void Delete(string path, bool contentsAlso)
{
if (string.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
var mtpDevice = MtpDeviceManager.GetPortableDevice(path);
var mtpFolder = mtpDevice.GetObject(path.Replace(MtpPathInterpreter.GetMtpDeviceName(path), string.Empty)) as PortableDeviceFolder;
if (mtpFolder == null)
{
mtpDevice.Disconnect();
return;
}
mtpFolder.Delete(mtpDevice, contentsAlso);
}
public void Create(string path, byte[] body)
{
if (string.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
var mtpDevice = MtpDeviceManager.GetPortableDevice(path);
if (Exists(path))
{
return;
}
new MtpDirectory().CreateDirectory(Path.GetDirectoryName(path));
var folderOnlyPath = Path.GetDirectoryName(path.Replace($"{MtpPathInterpreter.GetMtpDeviceName(path)}{Path.DirectorySeparatorChar}",
string.Empty));
string lastExistentFolderPath = folderOnlyPath;
var mtpFolder =
mtpDevice.GetLastExistentFolder(ref lastExistentFolderPath);
if (lastExistentFolderPath != folderOnlyPath)
{
throw new IOException();
}
if (mtpFolder == null || string.IsNullOrEmpty(lastExistentFolderPath))
{
mtpDevice.Disconnect();
throw new IOException();
}
try
{
PortableDeviceFile.Create(mtpDevice, mtpFolder, Path.GetFileName(path), body);
}
catch (Exception)
{
mtpDevice.Disconnect();
throw;
}
}
private static MtpDeviceManager CreateInstance()
{
return(_mtpDeviceManager ?? (_mtpDeviceManager = new MtpDeviceManager()));
}
