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92 lines
3.9 KiB
C#
92 lines
3.9 KiB
C#
//! \file ArcDAT.cs
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//! \date 2017 Nov 24
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//! \brief BELL-DA 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.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.IO;
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using GameRes.Compression;
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namespace GameRes.Formats.BellDa
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{
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[Export(typeof(ArchiveFormat))]
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public sealed class BldOpener : ArchiveFormat
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{
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public override string Tag { get { return "DAT/BLD"; } }
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public override string Description { get { return "BELL-DA resource archive"; } }
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public override uint Signature { get { return 0x30444C42; } } // 'BLD0'
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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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var version_str = file.View.ReadString (4, 4).TrimEnd ('\x1A');
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if (version_str != "0" && version_str != "1" && version_str != "12" && version_str != "3")
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return null;
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int count = file.View.ReadInt16 (8);
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if (!IsSaneCount (count))
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return null;
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uint index_offset = file.View.ReadUInt32 (0xA);
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if (index_offset >= file.MaxOffset)
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return null;
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uint data_offset = 0x10;
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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 (index_offset, 0xC);
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var entry = Create<PackedEntry> (name);
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entry.Offset = data_offset;
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entry.Size = file.View.ReadUInt32 (index_offset+0xC);
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if (!entry.CheckPlacement (file.MaxOffset))
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return null;
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index_offset += 0x10;
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data_offset += entry.Size;
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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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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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// XXX compression method identical to Maika.Mk2Opener
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var pent = (PackedEntry)entry;
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if (null == pent || !pent.IsPacked)
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{
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var id_str = arc.File.View.ReadString (entry.Offset, 2);
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if (id_str != "B1" && id_str != "C1" && id_str != "D1" && id_str != "E1")
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return base.OpenEntry (arc, entry);
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uint packed_size = arc.File.View.ReadUInt32 (entry.Offset+2);
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if (packed_size != entry.Size - 10)
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return base.OpenEntry (arc, entry);
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pent.Size = packed_size;
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pent.UnpackedSize = arc.File.View.ReadUInt32 (entry.Offset+6);
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pent.Offset += 10;
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pent.IsPacked = true;
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}
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var input = arc.File.CreateStream (entry.Offset, entry.Size);
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return new LzssStream (input);
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}
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}
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}
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