forked from cgvr/DeltaVR
99 lines
2.0 KiB
C#
99 lines
2.0 KiB
C#
//
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// Author:
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// Jb Evain (jbevain@gmail.com)
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//
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// Copyright (c) 2008 - 2015 Jb Evain
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// Copyright (c) 2008 - 2011 Novell, Inc.
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//
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// Licensed under the MIT/X11 license.
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//
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using System;
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using System.IO;
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namespace MonoFN.Cecil {
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public sealed class EmbeddedResource : Resource {
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readonly MetadataReader reader;
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uint? offset;
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byte [] data;
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Stream stream;
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public override ResourceType ResourceType {
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get { return ResourceType.Embedded; }
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}
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public EmbeddedResource (string name, ManifestResourceAttributes attributes, byte [] data) :
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base (name, attributes)
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{
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this.data = data;
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}
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public EmbeddedResource (string name, ManifestResourceAttributes attributes, Stream stream) :
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base (name, attributes)
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{
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this.stream = stream;
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}
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internal EmbeddedResource (string name, ManifestResourceAttributes attributes, uint offset, MetadataReader reader)
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: base (name, attributes)
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{
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this.offset = offset;
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this.reader = reader;
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}
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public Stream GetResourceStream ()
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{
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if (stream != null)
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return stream;
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if (data != null)
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return new MemoryStream (data);
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if (offset.HasValue)
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return new MemoryStream (reader.GetManagedResource (offset.Value));
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throw new InvalidOperationException ();
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}
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public byte [] GetResourceData ()
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{
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if (stream != null)
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return ReadStream (stream);
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if (data != null)
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return data;
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if (offset.HasValue)
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return reader.GetManagedResource (offset.Value);
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throw new InvalidOperationException ();
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}
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static byte [] ReadStream (Stream stream)
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{
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int read;
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if (stream.CanSeek) {
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var length = (int)stream.Length;
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var data = new byte [length];
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int offset = 0;
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while ((read = stream.Read (data, offset, length - offset)) > 0)
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offset += read;
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return data;
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}
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var buffer = new byte [1024 * 8];
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var memory = new MemoryStream ();
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while ((read = stream.Read (buffer, 0, buffer.Length)) > 0)
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memory.Write (buffer, 0, read);
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return memory.ToArray ();
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}
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}
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}
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