public ReadError Open(string filename)
{
if (!File.Exists(filename))
{
return(ReadError.FileDoesntExist);
}
directories = new List <FO1Dir>();
fileStream = File.OpenRead(filename);
var r = new BinaryBigEndian(fileStream);
dirCount = r.ReadInt32();
unknown = r.ReadInt32();
unknown2 = r.ReadInt32();
unknown3 = r.ReadInt32();
if (unknown != 0x5E && unknown2 != 0)
{
return(ReadError.NotValidMasterDat);
}
for (var i = 0; i < dirCount; i++)
{
directories.Add(new FO1Dir()
{
name = ReadString(r)
});
}
for (var i = 0; i < dirCount; i++)
{
var dir = directories[i];
dir.fileCount = r.ReadInt32();
r.ReadInt32(); // unknown4
r.ReadInt32(); // unknown5
r.ReadInt32(); // unknown6
for (var y = 0; y < dir.fileCount; y++)
{
var name = ReadString(r);
var packed = r.ReadInt32() == 0x40;
var offset = r.ReadInt32();
var size = r.ReadInt32();
var sizePacked = r.ReadInt32();
dir.files.Add(new FO1File
{
packed = packed,
name = name,
fullPath = dir.name + "\\" + name,
offset = offset,
size = size,
packedSize = sizePacked
});
}
}
//this.memStream = new MemoryStream();
this.fileStream.Position = 0;
//this.fileStream.CopyTo(this.memStream);
return(ReadError.Success);
}
public byte[] getBytes(FileStream stream) //MemoryStream
{
var r = new BinaryBigEndian(stream);
r.BaseStream.Seek(offset, SeekOrigin.Begin);
return(r.ReadBytes(size));
}
public byte[] getCompressedBytes(FileStream stream)
{
// Create a new stream so that we are thread safe.
var s = new MemoryStream();
BinaryBigEndian r;
stream.Seek(offset, SeekOrigin.Begin);
// Copy packedSize amount of bytes from the original dat stream to our new memory stream.
for (int i = 0; i < packedSize; i++)
{
s.WriteByte((byte)stream.ReadByte());
}
r = new BinaryBigEndian(s);
r.BaseStream.Seek(0, SeekOrigin.Begin);
var LZSS = new FO1LZSS(r, size);
var bytes = LZSS.Decompress();
s.Dispose();
r.Dispose();
GC.Collect();
return(bytes);
}
private string ReadString(BinaryBigEndian r)
{
var len = r.ReadByte();
return(Encoding.ASCII.GetString(r.ReadBytes(len)));
}
byte FL; // Flags indicating the compression status of up to 8 next characters.
public FO1LZSS(BinaryBigEndian stream, int uncompressedSize)
{
this.uncompressedSize = uncompressedSize;
this.stream = stream;
}