//
// AssemblyPart.cs
//
// Contact:
// Moonlight List (moonlight-list@lists.ximian.com)
//
// Copyright 2008-2009 Novell, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.IO;
using System.Reflection;
using Mono;
namespace System.Windows{
public sealed partial class AssemblyPart : DependencyObject {
static AssemblyPart ()
{
SourceProperty = DependencyProperty.Lookup (Kind.ASSEMBLYPART, "Source", typeof (string));
}
static Type MemoryStreamType = typeof (MemoryStream);
byte[] StreamToBuffer (Stream assemblyStream)
{
// it's normally bad to depend on Stream.Length since some stream (e.g. NetworkStream)
// don't implement them. However it is safe in this case (i.e. SL2 depends on Length too)
var buffer = new byte [assemblyStream.Length];
using (assemblyStream) {
int length = buffer.Length;
int offset = 0;
while (length > 0) {
int read = assemblyStream.Read (buffer, offset, length);
if (read == 0)
break;
length -= read;
offset += read;
}
}
return buffer;
}
public Assembly Load (Stream assemblyStream)
{
// SL2 throws a NullReferenceException if assemblyStream is null
// but returns null if the stream is empty (e.g. Stream.Null)
if (assemblyStream.Length == 0)
return null;
byte[] buffer = null;
// avoid extra step for MemoryStream (but not any stream that inherits from it)
if (assemblyStream.GetType () == MemoryStreamType)
buffer = (assemblyStream as MemoryStream).ToArray ();
else
buffer = StreamToBuffer (assemblyStream);
try {
Assembly result = Assembly.Load (buffer);
if (!Deployment.Current.Assemblies.Contains (result))
Deployment.Current.Assemblies.Add (result);
return result;
}
catch {
return null;
}
}
}
}
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