GARbro-mirror/ArcFormats/Ucom/ArcDATA.cs

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//! \file ArcDATA.cs
//! \date 2017 Nov 22
//! \brief For/Ucom scripts 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;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Text.RegularExpressions;
namespace GameRes.Formats.Ucom
{
[Export(typeof(ArchiveFormat))]
public class DataOpener : ArchiveFormat
{
public override string Tag { get { return "DATA/UCOM"; } }
public override string Description { get { return "For/Ucom scripts archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public DataOpener ()
{
Extensions = new string[] { "" };
}
public override ArcFile TryOpen (ArcView file)
{
if (!file.View.AsciiEqual (0, "PF"))
return null;
var base_name = Path.GetFileName (file.Name);
if (!base_name.Equals ("data02", StringComparison.InvariantCultureIgnoreCase))
return null;
var index_name = VFS.CombinePath (VFS.GetDirectoryName (file.Name), "data01");
if (!VFS.FileExists (index_name))
return null;
using (var index = VFS.OpenView (index_name))
{
if (!index.View.AsciiEqual (0, "IF"))
return null;
int count = index.View.ReadInt16 (2);
if (!IsSaneCount (count) || 4 + 0x18 * count > index.MaxOffset)
return null;
uint index_offset = 4;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var name = index.View.ReadString (index_offset, 0x10);
var entry = FormatCatalog.Instance.Create<Entry> (name);
entry.Offset = index.View.ReadUInt32 (index_offset+0x10);
entry.Size = index.View.ReadUInt32 (index_offset+0x14);
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 0x18;
}
return new ArcFile (file, this, dir);
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
var data = arc.File.View.ReadBytes (entry.Offset, entry.Size);
for (int i = 0; i < data.Length; ++i)
{
if ((i % 5) != 0)
data[i] ^= 0x45;
}
return new BinMemoryStream (data, entry.Name);
}
}
}