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266 lines
10 KiB
C#
266 lines
10 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.Compression;
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using GameRes.Formats.Properties;
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using GameRes.Formats.Strings;
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namespace GameRes.Formats.Marble
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{
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public class MblOptions : ResourceOptions
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{
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public string PassPhrase;
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}
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public class MblArchive : ArcFile
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{
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public readonly byte[] Key;
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public MblArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, string password)
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: base (arc, impl, dir)
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{
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Key = Encodings.cp932.GetBytes (password);
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}
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}
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[Serializable]
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public class MblScheme : ResourceScheme
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{
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public Dictionary<string, string> KnownKeys;
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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 CanWrite { 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 (!IsSaneCount (count))
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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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static readonly Lazy<ImageFormat> PrsFormat = new Lazy<ImageFormat> (() => ImageFormat.FindByTag ("PRS"));
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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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bool contains_scripts = false;
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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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break;
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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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string type = null;
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if (name.EndsWith (".s"))
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{
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type = "script";
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contains_scripts = true;
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}
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else if (4 == Path.GetExtension (name).Length)
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{
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type = FormatCatalog.Instance.GetTypeFromName (name);
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}
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Entry entry;
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if (string.IsNullOrEmpty (type))
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{
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entry = new AutoEntry (name, () => {
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uint signature = file.View.ReadUInt32 (offset);
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if (0x4259 == (0xffff & signature))
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return PrsFormat.Value;
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else if (0 != signature)
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return FormatCatalog.Instance.LookupSignature (signature).FirstOrDefault();
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else
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return null;
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});
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}
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else
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{
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entry = new Entry { Name = name, Type = type };
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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 || (1 == dir.Count && count > 1))
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return null;
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if (contains_scripts)
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{
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var password = QueryPassPhrase (file.Name);
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if (!string.IsNullOrEmpty (password))
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return new MblArchive (file, this, dir, password);
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}
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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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public static Dictionary<string, string> KnownKeys = new Dictionary<string, string>();
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public override ResourceScheme Scheme
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{
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get { return new MblScheme { KnownKeys = KnownKeys }; }
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set { KnownKeys = ((MblScheme)value).KnownKeys; }
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}
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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if (entry.Type != "script")
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return arc.File.CreateStream (entry.Offset, entry.Size);
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var marc = arc as MblArchive;
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var data = arc.File.View.ReadBytes (entry.Offset, entry.Size);
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if (null == marc || null == marc.Key)
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{
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for (int i = 0; i < data.Length; ++i)
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{
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data[i] = (byte)-data[i];
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}
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}
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else if (marc.Key.Length > 0)
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{
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for (int i = 0; i < data.Length; ++i)
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{
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data[i] ^= marc.Key[i % marc.Key.Length];
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}
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}
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return new BinMemoryStream (data, entry.Name);
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}
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string QueryPassPhrase (string arc_name)
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{
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var title = FormatCatalog.Instance.LookupGame (arc_name);
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if (!string.IsNullOrEmpty (title) && KnownKeys.ContainsKey (title))
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return KnownKeys[title];
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var options = Query<MblOptions> (arcStrings.MBLNotice);
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return options.PassPhrase;
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}
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public override ResourceOptions GetDefaultOptions ()
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{
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return new MblOptions { PassPhrase = Settings.Default.MBLPassPhrase };
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}
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public override object GetAccessWidget ()
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{
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return new GUI.WidgetMBL();
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}
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}
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[Export(typeof(ArchiveFormat))]
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public class GraMblOpener : ArchiveFormat
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{
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public override string Tag { get { return "MBL/GRA"; } }
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public override string Description { get { return "Marble engine graphics 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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uint filename_len = file.View.ReadUInt32 (0);
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int count = file.View.ReadInt32 (4);
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if (filename_len < 8 || filename_len > 0x40 || !IsSaneCount (count))
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return null;
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var arc_name = Path.GetFileNameWithoutExtension (file.Name);
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if (!arc_name.Equals ("mg_gra", StringComparison.InvariantCultureIgnoreCase))
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return null;
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uint index_offset = 8;
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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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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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break;
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name = name.ToLowerInvariant();
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index_offset += filename_len;
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var entry = new Entry {
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Name = Path.ChangeExtension (name, "bmp"),
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Type = "image",
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Offset = file.View.ReadUInt32 (index_offset),
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Size = file.View.ReadUInt32 (index_offset+4),
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};
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if (entry.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 || (1 == dir.Count && count > 1))
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return null;
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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 input = arc.File.CreateStream (entry.Offset, entry.Size);
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if (input.PeekByte() != 0x78)
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return input;
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return new ZLibStream (input, CompressionMode.Decompress);
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}
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}
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}
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