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(Tactics): another old archive format.

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morkt 2017-12-29 01:18:22 +04:00
parent 409a992a0d
commit 0f8c5ce023
1 changed files with 105 additions and 0 deletions
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ArcFormats/Tactics/ArcYU.cs Normal file
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//! \file ArcYU.cs
//! \date 2017 Dec 28
//! \brief Old Tactics resource archive.
//
// Copyright (C) 2017 by morkt
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Linq;
using GameRes.Utility;
namespace GameRes.Formats.Tactics
{
internal class YuEntry : Entry
{
public byte ContentType;
}
[Export(typeof(ArchiveFormat))]
public class YuOpener : ArchiveFormat
{
public override string Tag { get { return "ARC/Tactics/0"; } }
public override string Description { get { return "Tactics resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
const byte DefaultKey = 0x55;
static readonly string[] IndexExtensions = new string[] { ".dll" };
static readonly string[] KnownTypes = new string[] { "bmp", "jpg" };
public override ArcFile TryOpen (ArcView file)
{
string lst_name = IndexExtensions.Select (ext => file.Name + ext)
.FirstOrDefault (name => VFS.FileExists (name));
if (null == lst_name)
return null;
using (var lst = VFS.OpenBinaryStream (lst_name))
{
const int name_length = 0x41;
var dir = new List<Entry>();
var name_buffer = new byte[name_length];
while (lst.Read (name_buffer, 0, name_length) == name_length)
{
int name_end;
for (name_end = 0; name_end < name_length; ++name_end)
{
if (0 == name_buffer[name_end])
break;
name_buffer[name_end] ^= DefaultKey;
}
var name = Binary.GetCString (name_buffer, 0, name_end);
uint offset = lst.ReadUInt32();
if (offset > file.MaxOffset)
return null;
byte type = lst.ReadUInt8();
if (type < KnownTypes.Length)
name = Path.ChangeExtension (name, KnownTypes[type]);
var entry = FormatCatalog.Instance.Create<YuEntry> (name);
entry.Offset = offset;
entry.ContentType = type;
dir.Add (entry);
}
if (0 == dir.Count)
return null;
for (int i = 0; i < dir.Count; ++i)
{
long next_offset = i + 1 == dir.Count ? file.MaxOffset : dir[i+1].Offset;
dir[i].Size = (uint)(next_offset - dir[i].Offset);
}
return new ArcFile (file, this, dir);
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var input = arc.File.CreateStream (entry.Offset, entry.Size);
var yent = entry as YuEntry;
if (null == yent || yent.ContentType != 3)
return input;
return new XoredStream (input, DefaultKey);
}
}
}