71 lines
3.2 KiB
C#
71 lines
3.2 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.Text;
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using DiscUtils.Internal;
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namespace DiscUtils.Iso9660
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{
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internal struct PathTableRecord
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{
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////public byte ExtendedAttributeRecordLength;
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public uint LocationOfExtent;
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public ushort ParentDirectoryNumber;
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public string DirectoryIdentifier;
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////public static int ReadFrom(byte[] src, int offset, bool byteSwap, Encoding enc, out PathTableRecord record)
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////{
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//// byte directoryIdentifierLength = src[offset + 0];
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//// record.ExtendedAttributeRecordLength = src[offset + 1];
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//// record.LocationOfExtent = EndianUtilities.ToUInt32LittleEndian(src, offset + 2);
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//// record.ParentDirectoryNumber = EndianUtilities.ToUInt16LittleEndian(src, offset + 6);
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//// record.DirectoryIdentifier = IsoUtilities.ReadChars(src, offset + 8, directoryIdentifierLength, enc);
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////
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//// if (byteSwap)
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//// {
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//// record.LocationOfExtent = Utilities.BitSwap(record.LocationOfExtent);
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//// record.ParentDirectoryNumber = Utilities.BitSwap(record.ParentDirectoryNumber);
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//// }
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////
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//// return directoryIdentifierLength + 8 + (((directoryIdentifierLength & 1) == 1) ? 1 : 0);
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////}
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internal int Write(bool byteSwap, Encoding enc, byte[] buffer, int offset)
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{
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int nameBytes = enc.GetByteCount(DirectoryIdentifier);
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buffer[offset + 0] = (byte)nameBytes;
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buffer[offset + 1] = 0; // ExtendedAttributeRecordLength;
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IsoUtilities.ToBytesFromUInt32(buffer, offset + 2,
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byteSwap ? Utilities.BitSwap(LocationOfExtent) : LocationOfExtent);
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IsoUtilities.ToBytesFromUInt16(buffer, offset + 6,
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byteSwap ? Utilities.BitSwap(ParentDirectoryNumber) : ParentDirectoryNumber);
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IsoUtilities.WriteString(buffer, offset + 8, nameBytes, false, DirectoryIdentifier, enc);
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if ((nameBytes & 1) == 1)
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{
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buffer[offset + 8 + nameBytes] = 0;
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}
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return 8 + nameBytes + ((nameBytes & 0x1) == 1 ? 1 : 0);
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}
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}
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} |