GARbro-mirror/ArcFormats/ActiveSoft/ArcADPACK.cs

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//! \file ArcADPACK.cs
//! \date Sun Feb 15 09:25:28 2015
//! \brief A98SYS engine archive formats implementation.
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//
// 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 System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using GameRes.Utility;
namespace GameRes.Formats.AdPack
{
[Export(typeof(ArchiveFormat))]
public class PakOpener : ArchiveFormat
{
public override string Tag { get { return "A98"; } }
public override string Description { get { return "A98SYS Engine resource archive"; } }
public override uint Signature { get { return 0; } }
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public PakOpener ()
{
Extensions = new string[] { "pak" };
}
public override ArcFile TryOpen (ArcView file)
{
int count = file.View.ReadInt16 (0);
if (count <= 1)
return null;
if (0x4000 == count)
return TryOpenVoiceArchive (file);
long index_offset = 2;
uint index_size = (uint)(0x10 * count);
if (index_size > file.View.Reserve (index_offset, index_size))
return null;
--count;
var dir = new List<Entry> (count);
for (uint i = 0; i < count; ++i)
{
string name = ReadName (file, index_offset);
if (string.IsNullOrEmpty (name))
return null;
var entry = FormatCatalog.Instance.Create<Entry> (name);
uint offset = file.View.ReadUInt32 (index_offset+12);
uint next_offset = file.View.ReadUInt32 (index_offset+0x10+12);
entry.Size = next_offset - offset;
entry.Offset = offset;
if (offset < index_size || !entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 0x10;
}
return new ArcFile (file, this, dir);
}
ArcFile TryOpenVoiceArchive (ArcView file)
{
int count = file.View.ReadInt16 (2);
if (!IsSaneCount (count))
return null;
uint index_offset = 4;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
uint offset = file.View.ReadUInt32 (index_offset+4);
index_offset += 8;
if (offset == file.MaxOffset && i+1 == count)
break;
if (offset > file.MaxOffset)
return null;
var entry = new Entry { Offset = offset };
dir.Add (entry);
}
foreach (var entry in dir)
{
var name = ReadName (file, index_offset);
if (string.IsNullOrEmpty (name))
return null;
entry.Name = name;
entry.Type = FormatCatalog.Instance.GetTypeFromName (name);
entry.Size = file.View.ReadUInt32 (index_offset+0xC);
if (!entry.CheckPlacement (file.MaxOffset))
return null;
index_offset += 0x10;
}
return new ArcFile (file, this, dir);
}
string ReadName (ArcView file, long offset)
{
string name = file.View.ReadString (offset, 8).TrimEnd (null);
if (0 == name.Length)
return null;
string ext = file.View.ReadString (offset+8, 4).TrimEnd (null);
if (0 != ext.Length)
name += '.'+ext;
return name;
}
}
[Export(typeof(ArchiveFormat))]
public class Pak32Opener : ArchiveFormat
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{
public override string Tag { get { return "ADPACK32"; } }
public override string Description { get { return "Active Soft resource archive"; } }
public override uint Signature { get { return 0x41504441; } } // "ADPA"
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
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public Pak32Opener ()
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{
Extensions = new string[] { "pak" };
}
public override ArcFile TryOpen (ArcView file)
{
if (!file.View.AsciiEqual (4, "CK32"))
return null;
int count = file.View.ReadInt32 (12) - 1;
if (count <= 0 || count > 0xfffff)
return null;
uint index_size = (uint)(0x20 * count);
if (index_size > file.View.Reserve (0x10, index_size))
return null;
var dir = new List<Entry> (count);
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long index_offset = 0x10;
for (uint i = 0; i < count; ++i)
{
string name = file.View.ReadString (index_offset, 0x18);
var entry = FormatCatalog.Instance.Create<Entry> (name);
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uint offset = file.View.ReadUInt32 (index_offset+0x1c);
uint next_offset = file.View.ReadUInt32 (index_offset+0x20+0x1c);
entry.Size = next_offset - offset;
entry.Offset = offset;
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 0x20;
}
return new ArcFile (file, this, dir);
}
}
}