/// <summary>
/// A <see cref="ParseEmbeddedObject" /> or <see cref="ParseLinkedObject" /> always contain
/// a presentation object, this is used to present the embedded link or object in the host
/// application. This method will extract this data.
/// </summary>
/// <param name="binaryReader"></param>
public void GetAndSetPresentationObject(BinaryReader binaryReader)
{
var po = new Ole10(binaryReader);
Width = po.Width;
Height = po.Height;
StringFormat = po.StringFormat;
ClipboardFormat = po.ClipboardFormat;
PresentationData = po.PresentationData;
}
/// <summary>
/// Extracts a Outlook File Attachment object from the given <paramref name="stream"/>
/// </summary>
/// <param name="stream"></param>
/// <param name="outputFolder">The output folder</param>
internal static string ExtractOutlookAttachmentObject(Stream stream, string outputFolder)
{
// Outlook attachments embedded in RTF are firstly embedded in an OLE v1.0 object
var ole10 = new Ole10(stream);
// After that it is wrapped in a compound document
using (var internalStream = new MemoryStream(ole10.NativeData))
using (var compoundFile = new CompoundFile(internalStream))
{
string fileName = null;
if (compoundFile.RootStorage.ExistsStream("AttachDesc"))
{
var attachDescStream = compoundFile.RootStorage.GetStream("AttachDesc") as CFStream;
fileName = GetFileNameFromAttachDescStream(attachDescStream);
}
if (string.IsNullOrEmpty(fileName))
fileName = Extraction.DefaultEmbeddedObjectName;
fileName = FileManager.RemoveInvalidFileNameChars(fileName);
fileName = Path.Combine(outputFolder, fileName);
fileName = FileManager.FileExistsMakeNew(fileName);
if (compoundFile.RootStorage.ExistsStream("AttachContents"))
{
var data = compoundFile.RootStorage.GetStream("AttachContents").GetData();
return Extraction.SaveByteArrayToFile(data, fileName);
}
if (compoundFile.RootStorage.ExistsStorage("MAPIMessage"))
{
fileName = Path.Combine(outputFolder, fileName);
var storage = compoundFile.RootStorage.GetStorage("MAPIMessage") as CFStorage;
return Extraction.SaveStorageTreeToCompoundFile(storage, fileName);
}
return null;
}
}
/// <summary>
/// Extracts a OLE v1.0 object from the given <paramref name="stream"/>
/// </summary>
/// <param name="stream"></param>
/// <param name="outputFolder">The output folder</param>
internal static string ExtractOle10(Stream stream, string outputFolder)
{
var ole10 = new Ole10(stream);
if (ole10.Format != OleFormat.File) return null;
switch (ole10.ClassName)
{
case "Package":
var package = new Package(ole10.NativeData);
if (package.Format == OleFormat.Link) return null;
var fileName = Path.GetFileName(package.FileName);
if (string.IsNullOrWhiteSpace(fileName))
fileName = Extraction.DefaultEmbeddedObjectName;
fileName = Path.Combine(outputFolder, fileName);
return Extraction.SaveByteArrayToFile(package.Data, fileName);
default:
if (Extraction.IsCompoundFile(ole10.NativeData))
return Extraction.SaveFromStorageNode(ole10.NativeData, outputFolder, ole10.ItemName);
throw new OEObjectTypeNotSupported("Unsupported OleNative ClassName '" +
ole10.ClassName + "' found");
}
}
/// <summary>
/// A <see cref="ParseEmbeddedObject" /> or <see cref="ParseLinkedObject" /> always contain
/// a presentation object, this is used to present the embedded link or object in the host
/// application. This method will extract this data.
/// </summary>
/// <param name="binaryReader"></param>
public void GetAndSetPresentationObject(BinaryReader binaryReader)
{
var po = new Ole10(binaryReader);
Width = po.Width;
Height = po.Height;
StringFormat = po.StringFormat;
ClipboardFormat = po.ClipboardFormat;
PresentationData = po.PresentationData;
}
