public static AFSFile fromStream(Stream data)
{
// Reading AFS file header
var br = new BinaryReader(data);
var nf = new AFSFile()
{
header = br.ReadInt32(),
sectionCount = br.ReadInt32(),
};
if (nf.header != magic)
{
throw new InvalidDataException("Data is not an AFS file");
}
nf.sections = new AFSSection[nf.sectionCount];
for (int i = 0; i < nf.sectionCount; i++)
{
nf.sections[i] = new AFSSection()
{
offset = br.ReadInt32(),
length = br.ReadInt32()
};
}
var w = nf.sections[0].offset;
br.BaseStream.Position = w - 0x8; // hacks
var filetableOffset = br.ReadInt32();
var filetableLength = br.ReadInt32();
var filetableCount = filetableLength / 0x30; // The AFSFileDescriptor structure is 48 bytes long.
if (filetableOffset > 0 & filetableLength > 0)
{
cbug.write($"Filetable is at {filetableOffset:X} with {filetableCount:X} entries.");
nf.files = new AFSFileDescriptor[filetableCount];
br.BaseStream.Position = filetableOffset;
for (int i = 0; i < filetableCount; i++)
{
nf.files[i] = new AFSFileDescriptor()
{
name = br.ReadBytes(16),
un0 = br.ReadInt64(),
un1 = br.ReadInt64(),
un2 = br.ReadInt32(),
un3 = br.ReadInt16(),
un4 = br.ReadInt16(),
un5 = br.ReadInt32(),
length = br.ReadInt32()
};
}
}
return(nf);
}
static void Main(string[] args)
{
Console.WriteLine("jgrex");
var w = File.OpenRead("DEMO30.afs");
var afs = AFSFile.fromStream(w);
for (int i = 0; i < afs.sections.Length; i++)
{
cbug.write($"Entry {i} is at 0x{afs.sections[i].offset:X} of length {afs.sections[i].length:X}");
}
for (int i = 0; i < afs.files.Length; i++)
{
var fileName = Encoding.ASCII.GetString(afs.files[i].name);
cbug.write($"FileEntry {i}({fileName}) is length {afs.files[i].length:X}");
}
}