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86 lines
2.4 KiB
C#
86 lines
2.4 KiB
C#
/* This file is part of libmspack.
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* (C) 2003-2004 Stuart Caie.
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*
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* libmspack is free software; you can redistribute it and/or modify it under
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* the terms of the GNU Lesser General Public License (LGPL) version 2.1
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*
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* For further details, see the file COPYING.LIB distributed with libmspack
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*/
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using System;
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namespace LibMSPackSharp.CHM
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{
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internal class _HeaderSection0
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{
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#region Fields
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/// <summary>
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/// UNKNOWN
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/// </summary>
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/// <remarks>0x0000</remarks>
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public uint Unknown1 { get; private set; }
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/// <summary>
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/// UNKNOWN
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/// </summary>
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/// <remarks>0x0004</remarks>
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public uint Unknown2 { get; private set; }
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/// <summary>
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/// The length of the CHM helpfile, in bytes.
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/// </summary>
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/// <remarks>0x0008</remarks>
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public long FileLength { get; private set; }
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/// <summary>
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/// UNKNOWN
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/// </summary>
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/// <remarks>0x0010</remarks>
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public uint Unknown3 { get; private set; }
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/// <summary>
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/// UNKNOWN
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/// </summary>
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/// <remarks>0x0014</remarks>
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public uint Unknown4 { get; private set; }
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/// <summary>
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/// Total size of the header section 0 in bytes
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/// </summary>
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public const int Size = 0x0018;
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#endregion
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/// <summary>
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/// Private constructor
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/// </summary>
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private _HeaderSection0() { }
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/// <summary>
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/// Create a _HeaderSection0 from a byte array, if possible
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/// </summary>
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public static Error Create(byte[] buffer, out _HeaderSection0 headerSection)
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{
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headerSection = null;
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if (buffer == null || buffer.Length < Size)
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return Error.MSPACK_ERR_READ;
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headerSection = new _HeaderSection0();
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headerSection.Unknown1 = BitConverter.ToUInt32(buffer, 0x0000);
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headerSection.Unknown2 = BitConverter.ToUInt32(buffer, 0x0004);
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headerSection.FileLength = BitConverter.ToInt64(buffer, 0x0008);
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// TODO: Is this supposed to be == 0?
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if (headerSection.FileLength != 0)
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return Error.MSPACK_ERR_DATAFORMAT;
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headerSection.Unknown3 = BitConverter.ToUInt32(buffer, 0x0010);
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headerSection.Unknown4 = BitConverter.ToUInt32(buffer, 0x0014);
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return Error.MSPACK_ERR_OK;
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}
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}
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}
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