GARbro-mirror/ArcFormats/Tmr-Hiro/ArcPAC.cs

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//! \file ArcPAC.cs
//! \date Wed Dec 23 15:37:30 2015
//! \brief Tmr-Hiro ADV System archives.
//
// Copyright (C) 2015 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 GameRes.Utility;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
namespace GameRes.Formats.TmrHiro
{
[Export(typeof(ArchiveFormat))]
public class PacOpener : ArchiveFormat
{
public override string Tag { get { return "PAC/TMR-HIRO"; } }
public override string Description { get { return "Tmr-Hiro ADV System resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return false; } }
public PacOpener ()
{
Extensions = new string[] { "pac" };
}
public override ArcFile TryOpen (ArcView file)
{
int count = file.View.ReadInt16 (0);
if (!IsSaneCount (count))
return null;
uint name_length = file.View.ReadByte (2);
if (0 == name_length)
return null;
uint data_offset = file.View.ReadUInt32 (3);
if (data_offset >= file.MaxOffset)
return null;
int version;
uint index_size = 7 + (name_length + 8) * (uint)count;
if (data_offset == index_size)
version = 1;
else if (data_offset == index_size + 4 * (uint)count)
version = 2;
else
return null;
var dir = new List<Entry> (count);
uint index_offset = 7;
for (int i = 0; i < count; ++i)
{
var name = file.View.ReadString (index_offset, name_length);
index_offset += name_length;
var entry = new Entry { Name = name };
if (1 == version)
{
entry.Offset = file.View.ReadUInt32 (index_offset) + data_offset;
entry.Size = file.View.ReadUInt32 (index_offset+4);
index_offset += 8;
}
else
{
entry.Offset = file.View.ReadInt64 (index_offset) + data_offset;
entry.Size = file.View.ReadUInt32 (index_offset+8);
index_offset += 12;
}
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
}
var arc_name = Path.GetFileNameWithoutExtension (file.Name).ToLower();
foreach (var entry in dir)
{
var signature = file.View.ReadUInt32 (entry.Offset);
if (0x5367674F == signature) // 'OggS'
{
entry.Name = Path.ChangeExtension (entry.Name, "ogg");
entry.Type = "audio";
}
else if ((((signature & 0xFF) == 1 || (signature & 0xFF) == 2)) && arc_name.EndsWith ("grd"))
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{
entry.Name = Path.ChangeExtension (entry.Name, "grd");
entry.Type = "image";
}
else if (0x44 == (signature & 0xFF) && entry.Size-9 == file.View.ReadUInt32 (entry.Offset+5))
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{
entry.Type = "audio";
}
else if (6 == file.View.ReadInt16 (entry.Offset+4) && 0x140050 == file.View.ReadUInt32 (entry.Offset+6))
{
entry.Type = "script";
if ("srp" == arc_name)
entry.Name = Path.ChangeExtension (entry.Name, "srp");
}
}
return new ArcFile (file, this, dir);
}
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
if ("script" != entry.Type
|| 6 != arc.File.View.ReadInt16 (entry.Offset+4)
|| 0x140050 != arc.File.View.ReadUInt32 (entry.Offset+6))
return base.OpenEntry (arc, entry);
int record_count = arc.File.View.ReadInt32 (entry.Offset);
var data = arc.File.View.ReadBytes (entry.Offset, entry.Size);
int pos = 4;
for (int i = 0; i < record_count; ++i)
{
int chunk_size = LittleEndian.ToUInt16 (data, pos) - 4;
pos += 6;
if (pos + chunk_size > data.Length)
return base.OpenEntry (arc, entry);
for (int j = 0; j < chunk_size; ++j)
{
data[pos] = Binary.RotByteR (data[pos], 4);
++pos;
}
}
return new MemoryStream (data);
}
}
}