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(Mugi): Mugi's resource archive.
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ArcFormats/Mugi/ArcBIN.cs
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ArcFormats/Mugi/ArcBIN.cs
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//! \file ArcBIN.cs
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//! \date 2023 Sep 03
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//! \brief Mugi's resource archive.
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//
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// Copyright (C) 2023 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 GameRes.Compression;
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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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// [070323][schoolzone] Cosplay! Kyonyuu Mahjong
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namespace GameRes.Formats.Mugi
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{
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[Export(typeof(ArchiveFormat))]
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public class BinOpener : ArchiveFormat
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{
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public override string Tag { get => "BIN/MUGI"; }
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public override string Description { get => "Mugi's resource archive"; }
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public override uint Signature { get => 0; }
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public override bool IsHierarchic { get => false; }
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public override bool CanWrite { get => false; }
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public override ArcFile TryOpen (ArcView file)
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{
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const uint index_size = 0x8000 + 0x4000;
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if (file.MaxOffset <= index_size)
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return null;
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file.View.Reserve (0, index_size);
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uint index_pos = 0x8000;
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uint offset = file.View.ReadUInt32 (index_pos);
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if (offset != index_size)
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return null;
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uint[] offsets = new uint[0x800];
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int count = 0;
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while (offset != file.MaxOffset)
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{
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if (count == offsets.Length)
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return null;
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offsets[count++] = offset;
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index_pos += 4;
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offset = file.View.ReadUInt32 (index_pos);
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if (offset < offsets[count-1] || offset > file.MaxOffset)
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return null;
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}
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offsets[count--] = offset;
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uint name_pos = 0;
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uint size_pos = 0xA000;
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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 = file.View.ReadString (name_pos, 0x10);
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var entry = Create<PackedEntry> (name);
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entry.Offset = offsets[i];
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entry.Size = (uint)(offsets[i+1] - offsets[i]);
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entry.UnpackedSize = file.View.ReadUInt32 (size_pos);
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entry.IsPacked = entry.Size != entry.UnpackedSize;
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dir.Add (entry);
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name_pos += 0x10;
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size_pos += 4;
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}
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return new ArcFile (file, this, dir);
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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 = (PackedEntry)entry;
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Stream input = arc.File.CreateStream (entry.Offset, entry.Size);
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if (pent.IsPacked)
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input = new LzssStream (input);
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return input;
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}
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}
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}
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