GARbro-mirror/ArcFormats/NipponIchi/ArcCASN.cs
2023-12-06 23:58:24 +08:00

50 lines
2.0 KiB
C#

using GameRes.Utility;
using System.Collections.Generic;
using System.ComponentModel.Composition;
namespace GameRes.Formats.NipponIchi
{
[Export(typeof(ArchiveFormat))]
public class CASNOpener : ArchiveFormat
{
public override string Tag { get { return "DAT/CASN ShinHayarigami"; } }
public override string Description { get { return "Nippon Ichi Shin Hayarigami PS3 resource archive"; } }
public override uint Signature { get { return 0x4E534143; } } // 'CASN'
public override bool IsHierarchic { get { return false; } }
public override bool CanWrite { get { return false; } }
public override ArcFile TryOpen(ArcView file)
{
int count = Binary.BigEndian(file.View.ReadUInt16(6));
long index_offset = count * 10 + 30; //actually count*10 + 28, ignored two bytes of 000C or 000B
var dir = new List<Entry>(count);
for (int i = 0; i < count; ++i)
{
uint fstart = Binary.BigEndian(file.View.ReadUInt32(index_offset));
uint flength = Binary.BigEndian(file.View.ReadUInt32(index_offset + 4));
index_offset += 8;
byte c;
List<byte> namebyte = new List<byte>();
while (true)
{
c = file.View.ReadByte(index_offset);
if (c == 0) break;
namebyte.Add(c);
index_offset++;
}
index_offset += 3;
//var sjis = System.Text.Encoding.GetEncoding("Shift-JIS");
var name = System.Text.Encoding.ASCII.GetString(namebyte.ToArray());
var entry = Create<Entry>(name);
entry.Offset = fstart;
entry.Size = flength;
if (!entry.CheckPlacement(file.MaxOffset))
return null;
dir.Add(entry);
}
return new ArcFile(file, this, dir);
}
}
}