public PackFile(string fileName)
{
FileName = fileName;
Entries = new Dictionary <string, PackEntry>();
stream = File.OpenRead(fileName);
br = new BinaryReader(stream);
string magic = Encoding.ASCII.GetString(br.ReadBytes(4));
if (magic != "PACK")
{
throw new FormatException($"Invalid PAK file: got {magic}, expected PACK");
}
int dirOffset = br.ReadInt32();
int dirSize = br.ReadInt32();
stream.Seek(dirOffset, SeekOrigin.Begin);
for (var i = 0; i < dirSize / 64; i++)
{
string file = Encoding.ASCII.GetString(br.ReadBytes(56));
int offset = br.ReadInt32();
int size = br.ReadInt32();
PackEntry e = new PackEntry(file, offset, size);
Entries.Add(e.FileName, e);
}
}
public Stream GetFile(string path)
{
PackEntry e = Entries[path];
stream.Seek(e.Offset, SeekOrigin.Begin);
byte[] bytes = new byte[e.Size];
stream.Read(bytes, 0, e.Size);
return(new MemoryStream(bytes));
}