GARbro-mirror/ArcFormats/MAGES/ArcARC20.cs
2023-12-05 23:24:09 +08:00

51 lines
1.9 KiB
C#

using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.Text;
namespace GameRes.Formats.MAGES
{
[Export(typeof(ArchiveFormat))]
public class ARC20Opener : ArchiveFormat
{
public override string Tag { get { return "ARC/Princess Soft ARC20"; } }
public override string Description { get { return "Princess Soft PS2 resource archive"; } }
public override uint Signature { get { return 0x20435241; } } // 'ARC\x20'
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public override ArcFile TryOpen(ArcView file)
{
int count = file.View.ReadInt32(4);
if (!IsSaneCount(count))
return null;
uint filename_end = file.View.ReadUInt32(8);
var dir = new List<Entry>(count);
uint index_offset;
for (int i = 0; i < count; ++i)
{
index_offset = file.View.ReadUInt32(16 * i + 16);
byte c;
List<byte> namebyte = new List<byte>();
while (true)
{
c = file.View.ReadByte((long)index_offset);
if (c == 0 | index_offset > filename_end) break;
namebyte.Add(c);
index_offset++;
}
var sjis = System.Text.Encoding.GetEncoding("Shift-JIS");
var name = sjis.GetString(namebyte.ToArray());
var entry = Create<Entry>(name);
entry.Offset = file.View.ReadUInt32(16 * i + 16 + 4) * 2048;
entry.Size = file.View.ReadUInt32(16 * i + 16 + 8);
if (!entry.CheckPlacement(file.MaxOffset))
return null;
dir.Add(entry);
}
return new ArcFile(file, this, dir);
}
}
}