forked from cgvr/DeltaVR
55 lines
1.0 KiB
C#
55 lines
1.0 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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namespace MonoFN.Cecil.Metadata {
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sealed class BlobHeap : Heap {
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public BlobHeap (byte [] data)
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: base (data)
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{
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}
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public byte [] Read (uint index)
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{
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if (index == 0 || index > this.data.Length - 1)
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return Empty<byte>.Array;
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int position = (int)index;
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int length = (int)data.ReadCompressedUInt32 (ref position);
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if (length > data.Length - position)
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return Empty<byte>.Array;
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var buffer = new byte [length];
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Buffer.BlockCopy (data, position, buffer, 0, length);
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return buffer;
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}
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public void GetView (uint signature, out byte [] buffer, out int index, out int length)
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{
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if (signature == 0 || signature > data.Length - 1) {
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buffer = null;
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index = length = 0;
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return;
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}
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buffer = data;
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index = (int)signature;
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length = (int)buffer.ReadCompressedUInt32 (ref index);
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}
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}
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}
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