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107 lines
4.5 KiB
C#
107 lines
4.5 KiB
C#
//! \file ArcMBL.cs
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//! \date Fri Mar 27 23:11:19 2015
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//! \brief Marble Engine archive implementation.
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//
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// Copyright (C) 2015 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 System.Linq;
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using GameRes.Utility;
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namespace GameRes.Formats.Marble
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{
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[Export(typeof(ArchiveFormat))]
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public class MblOpener : ArchiveFormat
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{
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public override string Tag { get { return "MBL"; } }
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public override string Description { get { return "Marble engine 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 CanCreate { get { return false; } }
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public override ArcFile TryOpen (ArcView file)
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{
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int count = file.View.ReadInt32 (0);
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if (count <= 0 || count > 0xfffff)
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return null;
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ArcFile arc = null;
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uint filename_len = file.View.ReadUInt32 (4);
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if (filename_len > 0 && filename_len <= 0xff)
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arc = ReadIndex (file, count, filename_len, 8);
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if (null == arc)
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arc = ReadIndex (file, count, 0x10, 4);
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if (null == arc)
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arc = ReadIndex (file, count, 0x38, 4);
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return arc;
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}
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private ArcFile ReadIndex (ArcView file, int count, uint filename_len, uint index_offset)
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{
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uint index_size = (8u + filename_len) * (uint)count;
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if (index_size > file.View.Reserve (index_offset, index_size))
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return null;
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try
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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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string name = file.View.ReadString (index_offset, filename_len);
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if (0 == name.Length)
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return null;
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if (filename_len-name.Length > 1)
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{
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string ext = file.View.ReadString (index_offset+name.Length+1, filename_len-(uint)name.Length-1);
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if (0 != ext.Length)
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name = Path.ChangeExtension (name, ext);
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}
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name = name.ToLowerInvariant();
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index_offset += (uint)filename_len;
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uint offset = file.View.ReadUInt32 (index_offset);
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var entry = new AutoEntry (name, () => {
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uint signature = file.View.ReadUInt32 (offset);
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var res = FormatCatalog.Instance.LookupSignature (signature);
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if (!res.Any() && 0x4259 == (0xffff & signature))
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res = FormatCatalog.Instance.ImageFormats.Where (x => x.Tag == "PRS");
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return res.FirstOrDefault();
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});
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entry.Offset = offset;
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entry.Size = file.View.ReadUInt32 (index_offset+4);
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if (offset < index_size || !entry.CheckPlacement (file.MaxOffset))
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return null;
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dir.Add (entry);
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index_offset += 8;
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}
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if (0 == dir.Count)
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return null;
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return new ArcFile (file, this, dir);
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}
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catch
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{
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return null;
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}
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}
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}
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}
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