ASURA-Dat-Extractor/Program.cs

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2024-03-17 03:56:01 +01:00
//Written for ASURA. https://store.steampowered.com/app/2293900/
using System.IO.Compression;
FileStream input = File.OpenRead(args[0]);
BinaryReader br = new(input);
if (new string(br.ReadChars(7)) != "D-PACK2")
throw new Exception("Not a ASURA dat file.");
br.ReadByte();
int fileCount = br.ReadInt32();
int size = br.ReadInt32();
List<SUBFILE> subfiles = [];
for (int i = 0; i < fileCount; i++)
{
subfiles.Add(new()
{
unknown = br.ReadSingle(),
start = br.ReadInt32(),
sizeUncompressed = br.ReadInt32(),
sizeCompressed = br.ReadInt32(),
name = i
});
}
Directory.CreateDirectory(Path.GetDirectoryName(args[0]) + "\\" + Path.GetFileNameWithoutExtension(args[0]));
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foreach (SUBFILE subfile in subfiles)
{
br.BaseStream.Position = subfile.start;
using FileStream FS = File.Create(Path.GetDirectoryName(args[0]) + "\\" + Path.GetFileNameWithoutExtension(args[0]) + "\\" + subfile.name);
BinaryWriter bw = new(FS);
MemoryStream ms = new();
br.ReadInt16();
using (var ds = new DeflateStream(new MemoryStream(br.ReadBytes(subfile.sizeCompressed - 2)), CompressionMode.Decompress))
ds.CopyTo(ms);
br = new(ms);
br.BaseStream.Position = 0;
bw.Write(br.ReadBytes(subfile.sizeUncompressed));
bw.Close();
br = new(input);
}
class SUBFILE
{
public float unknown;
public int start;
public int sizeUncompressed;
public int sizeCompressed;
public int name;
}