GARbro-mirror/ArcFormats/Cherry/ArcCherry.cs

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2015-06-25 09:40:55 +08:00
//! \file ArcCherry.cs
//! \date Wed Jun 24 21:22:56 2015
//! \brief Cherry Soft archives implementation.
//
// 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 System.Linq;
using GameRes.Utility;
namespace GameRes.Formats.Cherry
{
[Export(typeof(ArchiveFormat))]
public class PakOpener : ArchiveFormat
{
public override string Tag { get { return "PAK/CHERRY"; } }
public override string Description { get { return "Cherry Soft resource archive"; } }
public override uint Signature { get { return 0x52454843; } } // 'CHER'
public override bool IsHierarchic { get { return false; } }
public override bool CanCreate { get { return false; } }
public PakOpener ()
{
Extensions = new string[] { "pak" };
Signatures = new uint[] { 0x52454843, 0 };
}
public override ArcFile TryOpen (ArcView file)
{
int index_offset = 0;
if (file.View.AsciiEqual (0, "CHERRY PACK 2.0"))
index_offset = 0x14;
int count = file.View.ReadInt32 (index_offset);
if (count <= 0 || count > 0xfffff)
return null;
long base_offset = file.View.ReadUInt32 (index_offset+4);
index_offset += 8;
uint index_size = (uint)count * 0x18u;
if (index_size > file.View.Reserve (index_offset, index_size))
return null;
string arc_name = Path.GetFileNameWithoutExtension (file.Name);
bool is_grp = arc_name.EndsWith ("GRP", StringComparison.InvariantCultureIgnoreCase);
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
string name = file.View.ReadString (index_offset, 0x10);
if (0 == name.Length)
return null;
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var offset = base_offset + file.View.ReadUInt32 (index_offset+0x10);
Entry entry;
if (is_grp)
{
entry = new Entry {
Name = Path.ChangeExtension (name, "grp"),
Type = "image",
Offset = offset
};
}
else
{
entry = AutoEntry.Create (file, offset, name);
}
entry.Size = file.View.ReadUInt32 (index_offset+0x14);
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 0x18;
}
return new ArcFile (file, this, dir);
}
}
}