66 lines
2.2 KiB
C#
66 lines
2.2 KiB
C#
//
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// Copyright (c) 2008-2011, Kenneth Bell
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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using System.IO;
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using DiscUtils.Partitions;
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using DiscUtils.Streams;
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namespace DiscUtils.ApplePartitionMap
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{
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[PartitionTableFactory]
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internal sealed class PartitionMapFactory : PartitionTableFactory
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{
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public override bool DetectIsPartitioned(Stream s)
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{
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if (s.Length < 1024)
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{
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return false;
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}
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s.Position = 0;
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byte[] initialBytes = StreamUtilities.ReadExact(s, 1024);
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BlockZero b0 = new BlockZero();
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b0.ReadFrom(initialBytes, 0);
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if (b0.Signature != 0x4552)
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{
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return false;
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}
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PartitionMapEntry initialPart = new PartitionMapEntry(s);
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initialPart.ReadFrom(initialBytes, 512);
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return initialPart.Signature == 0x504d;
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}
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public override PartitionTable DetectPartitionTable(VirtualDisk disk)
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{
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if (!DetectIsPartitioned(disk.Content))
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{
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return null;
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}
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return new PartitionMap(disk.Content);
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}
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}
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} |