private void Enumerate(ref PortableDeviceApiLib.IPortableDeviceContent pContent, string parentID, PortableDeviceContainerObject node)
{
PortableDeviceApiLib.IPortableDeviceProperties properties;
pContent.Properties(out properties);
PortableDeviceApiLib.IEnumPortableDeviceObjectIDs pEnum;
pContent.EnumObjects(0, parentID, null, out pEnum);
uint cFetched = 0;
PortableDeviceObject current;
do
{
string objectID;
pEnum.Next(1, out objectID, ref cFetched);
if (cFetched > 0)
{
current = this.ExtractInformation(properties, objectID);
node.AddChild(current);
if (current is PortableDeviceContainerObject)
Enumerate(ref pContent, objectID, (PortableDeviceContainerObject)current);
}
} while (cFetched > 0);
}
internal void Enumerate(ref IPortableDeviceContent pContent, string parentID, PortableDeviceContainerObject node, IObjectEnumerateHelper helper, bool detectNewObjects = false)
{
IPortableDeviceProperties properties;
pContent.Properties(out properties);
foreach (var objectID in ExtractObjectIds(pContent, parentID))
{
if (detectNewObjects && ParentContainsChildsId(node, objectID))
continue;
PortableDeviceObject current = ExtractInformation(properties, objectID);
if(!helper.IsObjectMatching(current))
continue;
node.AddChild(current);
if (!helper.IsLastNode && current is PortableDeviceContainerObject)
Enumerate(ref pContent, objectID, (PortableDeviceContainerObject)current, helper.Next(), detectNewObjects);
}
}
private static bool ParentContainsChildsId(PortableDeviceContainerObject node, string objectID)
{
string copyId = objectID; // to remove different behavior in compiled code of nested foreach
var q = from child in node.Childs
where child.ID == copyId
select child;
return q.Any();
}
public void Update(ref IPortableDeviceContent pContent, PortableDeviceContainerObject parent)
{
lock (dispatcher)
{
Enumerate(ref pContent, parent.ID, parent, enumerateHelper, detectNewObjects: true);
}
}
/// <summary>
/// Inspired by http://cgeers.com/2012/04/17/wpd-transfer-content-to-a-device/
/// </summary>
/// <param name="parentObject"></param>
/// <param name="sourceStream"></param>
/// <param name="name"></param>
/// <param name="originalFileName"></param>
/// <param name="size"></param>
public PortableDeviceObject Push(PortableDeviceContainerObject parentObject, Stream sourceStream, string name, string originalFileName, ulong size)
{
IPortableDeviceContent content;
portableDeviceClass.Content(out content);
IPortableDeviceValues values = GetRequiredPropertiesForPush(parentObject, name, originalFileName, size);
IStream tempStream;
uint optimalTransferSizeBytes = 0;
content.CreateObjectWithPropertiesAndData(values, out tempStream, ref optimalTransferSizeBytes, null);
var targetStream = (System.Runtime.InteropServices.ComTypes.IStream) tempStream;
try
{
var buffer = new byte[optimalTransferSizeBytes];
int bytesRead;
do
{
bytesRead = sourceStream.Read(buffer, 0, (int) optimalTransferSizeBytes);
IntPtr pcbWritten = IntPtr.Zero;
if (bytesRead < (int) optimalTransferSizeBytes)
targetStream.Write(buffer, bytesRead, pcbWritten);
else
targetStream.Write(buffer, (int) optimalTransferSizeBytes, pcbWritten);
} while (bytesRead > 0);
targetStream.Commit(0);
device.Update(ref content, parentObject);
// TODO There is no IPortableDeviceDataStream in C# port to get ID, so we will make a bicycle
return Find("^" + originalFileName + "$", parentObject).First();
}
finally
{
Marshal.ReleaseComObject(tempStream);
}
}
public PortableDeviceObject Push(PortableDeviceContainerObject parentObject, Stream sourceStream, string originalFileName, ulong size)
{
return Push(parentObject, sourceStream, originalFileName, originalFileName, size);
}
public PortableDeviceObject Mkdir(PortableDeviceContainerObject parentObject, string name)
{
IPortableDeviceContent content;
portableDeviceClass.Content(out content);
var values = (IPortableDeviceValues) new PortableDeviceValues();
values.SetStringValue(PortableDevicePKeys.WPD_OBJECT_PARENT_ID, parentObject.ID);
values.SetStringValue(PortableDevicePKeys.WPD_OBJECT_ORIGINAL_FILE_NAME, name);
values.SetGuidValue(PortableDevicePKeys.WPD_OBJECT_CONTENT_TYPE, PortableDeviceGuids.WPD_CONTENT_TYPE_FOLDER);
string objId = String.Empty;
content.CreateObjectWithPropertiesOnly(values, ref objId);
device.Update(ref content, parentObject);
var q = from obj in parentObject.Childs
where obj.ID == objId
select obj;
return q.First();
}
/// <summary>
/// Finds collection of specified objects in specific storage service of WPD device
/// /android/music/mp3
/// /.*/.*/mp3
/// /android/sic
/// </summary>
/// <param name="path">Represents a '/' delimeted path; each node can be RegEx pattern, not wildcard pattern; </param>
/// <param name="storage"></param>
/// <returns></returns>
public IEnumerable<PortableDeviceObject> Find(string path, PortableDeviceContainerObject parent)
{
return FindInternal(parent.Childs, new PathEnumerateHelper(path));
}
