mirror of
https://github.com/crskycode/GARbro.git
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522 lines
17 KiB
C#
522 lines
17 KiB
C#
//! \file ArcMPK.cs
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//! \date 2017 Dec 19
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//! \brief Kurumi resource archive.
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//
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// Copyright (C) 2017 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// 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 DEALINGS
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// IN THE SOFTWARE.
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//
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.IO;
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using GameRes.Utility;
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namespace GameRes.Formats.Kurumi
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{
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[Export(typeof(ArchiveFormat))]
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public class MpkOpener : ArchiveFormat
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{
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public override string Tag { get { return "MPK/KURUMI"; } }
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public override string Description { get { return "Kurumi resource archive"; } }
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public override uint Signature { get { return 0; } }
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public override bool IsHierarchic { get { return false; } }
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public override bool CanWrite { get { return false; } }
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public override ArcFile TryOpen (ArcView file)
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{
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if (!file.View.AsciiEqual (0, "MP"))
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return null;
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int version = file.View.ReadByte (2);
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if (version > 1)
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return null;
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int count = file.View.ReadInt32 (4);
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if (!IsSaneCount (count))
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return null;
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uint data_offset = file.View.ReadUInt32 (8);
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if (data_offset <= 12 || data_offset >= file.MaxOffset)
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return null;
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using (var index = Decompress (file, 12, data_offset-12))
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{
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var dir = new List<Entry> (count);
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for (int i = 0; i < count; ++i)
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{
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var name = index.ReadCString (0xF8);
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var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
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entry.Offset = index.ReadUInt32() + data_offset;
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entry.Size = index.ReadUInt32();
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entry.UnpackedSize = index.ReadUInt32();
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if (!entry.CheckPlacement (file.MaxOffset))
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return null;
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entry.IsPacked = true;
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dir.Add (entry);
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}
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return new ArcFile (file, this, dir);
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}
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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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var pent = entry as PackedEntry;
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if (null == pent || !pent.IsPacked)
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return base.OpenEntry (arc, entry);
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return Decompress (arc.File, entry.Offset, entry.Size).AsStream;
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}
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IBinaryStream Decompress (ArcView file, long offset, uint packed_size)
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{
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uint unpacked_size = Binary.BigEndian (file.View.ReadUInt32 (offset));
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bool is_packed = file.View.ReadByte (offset+8) != 0;
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if (!is_packed)
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return file.CreateStream (offset+9, unpacked_size);
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using (var input = file.CreateStream (offset+9, packed_size-9))
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{
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var compr = new MpkCompression (input, (int)unpacked_size);
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var data = compr.Unpack();
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return new BinMemoryStream (data);
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}
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}
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}
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internal sealed class MpkCompression
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{
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IBinaryStream m_input;
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byte[] m_output;
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public MpkCompression (IBinaryStream input, int unpacked_size)
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{
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m_input = input;
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m_output = new byte[unpacked_size];
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}
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public byte[] Unpack ()
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{
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var data = CreateBuffer();
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int dst = 0;
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while (dst < m_output.Length)
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{
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int count = sub_429D50();
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if (0 == count)
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break;
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Buffer.BlockCopy (data, 0, m_output, dst, count);
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dst += count;
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}
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return m_output;
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}
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byte[] CreateBuffer ()
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{
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word_471CEC = 16;
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if (null == m_buffer)
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{
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dword_471D04 = new ushort[0x1000];
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dword_471D54 = new ushort[0x100];
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InitTree (15);
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m_buffer = new byte[m_buffer_size];
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}
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word_471D6C = 0;
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m_eof = false;
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InitBits();
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return m_buffer;
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}
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int m_bits_avail;
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int m_bits;
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bool m_eof;
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int word_471CE8;
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int m_buffer_size;
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ushort word_471CEC;
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short word_471D00;
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short word_471D4E;
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int word_471D6C;
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ushort word_471D58;
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ushort m_tree_size;
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ushort word_471D60;
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byte[] m_buffer;
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ushort[] m_lhs_nodes;
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ushort[] m_rhs_nodes;
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byte[] dword_471CFC;
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ushort[] dword_471D04;
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ushort[] dword_471D54;
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byte[] dword_471D64;
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void InitTree (short depth)
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{
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word_471D4E = depth;
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m_tree_size = 0x1FE;
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word_471D58 = (ushort)(depth + 1);
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m_buffer_size = 1 << depth;
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dword_471D64 = new byte[0x1FE];
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dword_471CFC = new byte[Math.Max (0x13, depth + 1)];
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m_lhs_nodes = new ushort[2 * m_tree_size - 1];
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m_rhs_nodes = new ushort[2 * m_tree_size - 1];
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}
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int InitBits ()
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{
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m_bits_avail = 0;
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m_bits = 0;
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word_471D60 = 0;
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word_471D00 = 0;
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return LoadBits (word_471CEC);
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}
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short GetBits (short a1)
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{
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int v1 = word_471D60 >> (word_471CEC - a1);
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LoadBits (a1);
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return (short)v1;
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}
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ushort LoadBits (int count)
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{
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word_471D60 <<= count;
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if (count > m_bits_avail)
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{
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do
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{
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count -= m_bits_avail;
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word_471D60 |= (ushort)(m_bits << count);
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int bits = m_input.ReadByte();
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if (-1 == bits)
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{
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bits = 0;
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m_eof = true;
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}
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m_bits = bits;
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m_bits_avail = 8;
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}
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while (count > 8);
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}
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int v = m_bits_avail - count;
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ushort result = (ushort)(m_bits >> v);
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m_bits_avail = v;
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word_471D60 |= result;
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return result;
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}
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int sub_429D50 ()
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{
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int dst = 0;
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while (--word_471D6C >= 0)
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{
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m_buffer[dst++ & 0xFFFF] = m_buffer[word_471CE8];
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word_471CE8 = (word_471CE8 + 1) & (m_buffer_size - 1);
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if (dst == m_buffer_size)
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return dst;
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}
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while (!m_eof || word_471D00 != 0)
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{
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ushort v4 = sub_42A090();
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if (v4 > 0xFF)
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{
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short offset = sub_42A490();
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word_471D6C = v4 - 254;
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word_471CE8 = (dst - offset - 1) & (m_buffer_size - 1);
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if (word_471D6C >= 0)
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{
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do
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{
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m_buffer[dst++ & 0xFFFF] = m_buffer[word_471CE8];
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word_471CE8 = (word_471CE8 + 1) & (m_buffer_size - 1);
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if (dst == m_buffer_size)
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return dst;
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}
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while (--word_471D6C >= 0);
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}
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}
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else
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{
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m_buffer[dst++ & 0xFFFF] = (byte)v4;
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if (dst == m_buffer_size)
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break;
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}
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}
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return dst;
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}
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ushort sub_42A090 ()
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{
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if (0 == word_471D00)
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{
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word_471D00 = GetBits (16);
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sub_42A1A0 (19, 5, 3);
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sub_42A2E0();
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sub_42A1A0 (word_471D58, 4, 0xFFFF);
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}
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--word_471D00;
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ushort v1 = dword_471D04[word_471D60 >> (word_471CEC - 12)];
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int v2 = 1 << (word_471CEC - 13);
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while (v1 >= m_tree_size)
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{
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if (0 != (word_471D60 & v2))
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v1 = m_rhs_nodes[v1];
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else
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v1 = m_lhs_nodes[v1];
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v2 >>= 1;
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}
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LoadBits (dword_471D64[v1]);
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return v1;
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}
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void sub_42A1A0 (int a1, short a2, ushort a3)
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{
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short v3 = GetBits (a2);
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if (0 == v3)
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{
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short v5 = GetBits (a2);
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for (int i = 0; i < a1; ++i)
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{
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dword_471CFC[i] = 0;
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}
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for (int i = 0; i < 256; ++i)
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{
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dword_471D54[i] = (ushort)v5;
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}
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return;
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}
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for (int v10 = 0; v10 < v3; )
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{
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int v11 = word_471D60 >> (word_471CEC - 3);
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if (v11 == 7)
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{
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int v14 = 1 << (word_471CEC - 4);
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while (0 != (word_471D60 & v14))
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{
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v14 >>= 1;
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++v11;
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}
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LoadBits (v11 - 3);
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}
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else if (v11 < 7)
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{
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LoadBits (3);
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}
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else
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LoadBits (v11 - 3);
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dword_471CFC[v10++] = (byte)v11;
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if (v10 == a3)
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{
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for (int count = GetBits (2); count > 0; --count)
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{
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dword_471CFC[v10++] = 0;
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}
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}
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}
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int n = v3;
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for (int count = a1 - v3; count > 0; --count)
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{
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dword_471CFC[n++] = 0;
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}
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sub_42A540 (a1, dword_471CFC, 8, dword_471D54);
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}
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void sub_42A2E0 ()
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{
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short v0 = GetBits(9);
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if (v0 != 0)
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{
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int v8 = 0;
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while (v8 < v0)
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{
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int v9 = dword_471D54[word_471D60 >> (word_471CEC - 8)];
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int v10 = 1 << (word_471CEC - 9);
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while (v9 >= 19)
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{
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if (0 != (word_471D60 & v10))
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v9 = m_rhs_nodes[v9];
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else
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v9 = m_lhs_nodes[v9];
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v10 >>= 1;
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}
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LoadBits (dword_471CFC[v9]);
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if (v9 <= 2)
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{
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int count;
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if (0 == v9)
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count = 1;
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else if (1 == v9)
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count = GetBits (4) + 3;
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else
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count = GetBits (9) + 20;
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while (count --> 0)
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{
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dword_471D64[v8++] = 0;
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}
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}
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else
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{
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dword_471D64[v8++] = (byte)(v9 - 2);
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}
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}
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while (v8 < m_tree_size)
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{
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dword_471D64[v8++] = 0;
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}
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sub_42A540 (m_tree_size, dword_471D64, 12, dword_471D04);
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}
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else
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{
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short v3 = GetBits (9);
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for (int i = 0; i < m_tree_size; ++i)
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{
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dword_471D64[i] = 0;
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}
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for (int i = 0; i < 0x1000; ++i)
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{
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dword_471D04[i] = (ushort)v3;
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}
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}
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}
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short sub_42A490()
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{
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var v0 = dword_471D54[word_471D60 >> (word_471CEC - 8)];
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int v1 = 1 << (word_471CEC - 9);
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while (v0 >= word_471D58)
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{
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if (0 != (word_471D60 & v1))
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v0 = m_rhs_nodes[v0];
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else
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v0 = m_lhs_nodes[v0];
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v1 >>= 1;
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}
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LoadBits (dword_471CFC[v0]);
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if (0 == v0)
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return 0;
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short v2 = GetBits ((short)(v0 - 1));
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return (short)((1 << (v0 - 1)) + v2);
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}
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ushort[] v33 = new ushort[36];
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int sub_42A540 (int a1, byte[] a2, ushort a3, ushort[] a4)
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{
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for (int i = 1; i <= 0x10; ++i)
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v33[i] = 0;
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for (int i = 0; i < a1; ++i)
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++v33[a2[i]];
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v33[19] = 0;
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int v6 = 15;
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for (int v7 = 0; v7 < 16; ++v7)
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{
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int v10 = v33[v7 + 1] << v6--;
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v33[v7 + 20] = (ushort)(v33[v7 + 19] + v10);
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}
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if (v33[35] != 0)
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throw new InvalidFormatException();
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int v11 = 1;
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int v12 = 16 - a3;
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while (v11 <= a3)
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{
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v33[v11 + 18] = (ushort)(v33[v11 + 18] >> v12);
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v33[v11] = (ushort)(1 << (a3 - v11));
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++v11;
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}
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if (v11 <= 0x10)
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{
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int v14 = v11;
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int v15 = 17 - v11;
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int v16 = v11; // within v33
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do
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{
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v11 = 1 << (16 - v14++);
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v33[v16++] = (ushort)v11;
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--v15;
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}
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while (v15 > 0);
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}
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v11 = v33[a3 + 19] >> v12;
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if (v11 != 0)
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{
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while (v11 != (1 << a3))
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{
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a4[v11++] = 0;
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}
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}
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int v18 = a1;
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int v19 = 0;
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int result = 0;
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while (v19 < a1)
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{
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int v21 = a2[result];
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if (v21 != 0)
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{
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int v32 = v21 + 18; // within v33
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int v22 = v33[v32];
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int v24 = v22 + v33[v21];
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if (v21 > a3)
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{
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int v23 = v22;
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var v26 = new ArrayPtr<ushort> (a4, v22 >> (16 - a3));
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for (int count = v21 - a3; count != 0; --count)
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{
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if (0 == v26.Value)
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{
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m_lhs_nodes[v18] = 0;
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m_rhs_nodes[v18] = 0;
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v26.Value = (ushort)v18;
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++v18;
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}
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if (0 != ((1 << (15 - a3)) & v23))
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v26 = new ArrayPtr<ushort> (m_rhs_nodes, v26.Value);
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else
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v26 = new ArrayPtr<ushort> (m_lhs_nodes, v26.Value);
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v23 <<= 1;
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}
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v26.Value = (ushort)v19;
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}
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else
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{
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while (v22 < v24)
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{
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a4[v22++] = (ushort)v19;
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}
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}
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v33[v32] = (ushort)v24;
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}
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result = ++v19;
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}
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return result;
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}
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}
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internal struct ArrayPtr<T>
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{
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T[] m_array;
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int m_index;
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public T Value
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{
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get { return m_array[m_index]; }
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set { m_array[m_index] = value; }
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}
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public ArrayPtr (T[] array, int index)
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{
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m_array = array;
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m_index = index;
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}
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}
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}
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