public static List<DATFile> FindFiles(DAT dat, BinaryReader br)
{
List<DATFile> DatFiles = new List<DATFile>();
uint FileIndex = 0;
br.BaseStream.Seek(-(dat.TreeSize + 4), SeekOrigin.End);
while (FileIndex < dat.FilesTotal)
{
DATFile file = new DATFile();
file.br = br;
file.FileNameSize = br.ReadInt32();
char[] namebuf = new Char[file.FileNameSize];
br.Read(namebuf, 0, (int)file.FileNameSize);
file.Path = new String(namebuf, 0, namebuf.Length);
file.FileName = Path.GetFileName(file.Path);
file.Compression = br.ReadByte();
file.UnpackedSize = br.ReadInt32();
file.PackedSize = br.ReadInt32();
if (file.Compression==0x00&&(file.UnpackedSize != file.PackedSize))
file.Compression = 1;
file.Offset = br.ReadInt32();
long oldoffset = br.BaseStream.Position;
// Read whole file into a buffer
br.BaseStream.Position = file.Offset;
file.Buffer = new Byte[file.PackedSize];
br.Read(file.Buffer, 0, file.PackedSize);
br.BaseStream.Position = oldoffset;
DatFiles.Add(file);
FileIndex++;
}
return DatFiles;
}
// Based on code by Dims
public static DAT ReadDat(string filename, out DatReaderError error)
{
if (String.IsNullOrEmpty(filename))
{
error = new DatReaderError(DatError.IOError, "Invalid filename: '" + filename + "'");
return(null);
}
List <string> dirs = new List <string>();
DAT dat = new DAT();
dat.DatFileName = filename;
BinaryReader br = null;
try
{
br = new BinaryReader(File.Open(filename, FileMode.Open));
}
catch (IOException io)
{
error = new DatReaderError(DatError.IOError, io.Message);
return(null);
}
dat.br = br;
br.BaseStream.Seek(-8, SeekOrigin.End);
dat.TreeSize = br.ReadInt32();
dat.FileSizeFromDat = br.ReadInt32();
br.BaseStream.Seek(0, SeekOrigin.Begin);
ulong F1DirCount = ToLittleEndian((ulong)br.ReadInt32());
if (F1DirCount == 0x01 || F1DirCount == 0x33) // Check if it's Fallout 1 dat
{
error = new DatReaderError(DatError.IOError, "Fallout 1 DATs not supported.");
return(null);
}
if (br.BaseStream.Length != dat.FileSizeFromDat)
{
error = new DatReaderError(DatError.WrongSize, "Size is incorrect.");
return(null);
}
br.BaseStream.Seek(-(dat.TreeSize + 8), SeekOrigin.End);
dat.FilesTotal = br.ReadInt32();
byte[] buff = new byte[dat.TreeSize];
br.Read(buff, 0, (int)(dat.TreeSize - 4));
dat.FileList = FindFiles(dat, br);
error = new DatReaderError(DatError.Success, "");
return(dat);
}
// Based on code by Dims
public static DAT ReadDat(string filename, out DatReaderError error)
{
if (String.IsNullOrEmpty(filename))
{
error = new DatReaderError(DatError.IOError, "Invalid filename: '" + filename + "'");
return null;
}
List<string> dirs = new List<string>();
DAT dat = new DAT();
dat.DatFileName = filename;
BinaryReader br=null;
try
{
br = new BinaryReader(File.Open(filename, FileMode.Open));
}
catch (IOException io)
{
error = new DatReaderError(DatError.IOError, io.Message);
return null;
}
dat.br = br;
br.BaseStream.Seek(-8, SeekOrigin.End);
dat.TreeSize = br.ReadInt32();
dat.FileSizeFromDat = br.ReadInt32();
br.BaseStream.Seek(0, SeekOrigin.Begin);
ulong F1DirCount = ToLittleEndian((ulong)br.ReadInt32());
if (F1DirCount == 0x01 || F1DirCount == 0x33) // Check if it's Fallout 1 dat
{
error = new DatReaderError(DatError.IOError, "Fallout 1 DATs not supported.");
return null;
}
if (br.BaseStream.Length != dat.FileSizeFromDat)
{
error = new DatReaderError(DatError.WrongSize, "Size is incorrect.");
return null;
}
br.BaseStream.Seek(-(dat.TreeSize+8), SeekOrigin.End);
dat.FilesTotal = br.ReadInt32();
byte[] buff = new byte[dat.TreeSize];
br.Read(buff, 0, (int)(dat.TreeSize - 4));
dat.FileList = FindFiles(dat, br);
error = new DatReaderError(DatError.Success, "");
return dat;
}
public static List <DATFile> FindFiles(DAT dat, BinaryReader br)
{
List <DATFile> DatFiles = new List <DATFile>();
uint FileIndex = 0;
br.BaseStream.Seek(-(dat.TreeSize + 4), SeekOrigin.End);
while (FileIndex < dat.FilesTotal)
{
DATFile file = new DATFile();
file.br = br;
file.FileNameSize = br.ReadInt32();
char[] namebuf = new Char[file.FileNameSize];
br.Read(namebuf, 0, (int)file.FileNameSize);
file.Path = new String(namebuf, 0, namebuf.Length);
file.FileName = Path.GetFileName(file.Path);
file.Compression = br.ReadByte();
file.UnpackedSize = br.ReadInt32();
file.PackedSize = br.ReadInt32();
if (file.Compression == 0x00 && (file.UnpackedSize != file.PackedSize))
{
file.Compression = 1;
}
file.Offset = br.ReadInt32();
long oldoffset = br.BaseStream.Position;
// Read whole file into a buffer
br.BaseStream.Position = file.Offset;
file.Buffer = new Byte[file.PackedSize];
br.Read(file.Buffer, 0, file.PackedSize);
br.BaseStream.Position = oldoffset;
DatFiles.Add(file);
FileIndex++;
}
return(DatFiles);
}
private bool FileExists(DAT dat, string fileName)
{
return dat.FileList.Exists(x => x.FileName.ToLower() == fileName);
}
public static void WriteDat(DAT dat, string filename)
{
dat.br.Close();
BinaryWriter bw = new BinaryWriter(File.Open(filename, FileMode.Create));
int i=0;
while (i < dat.FilesTotal) // Write DataBlock
{
dat.FileList[i].Offset = (int)bw.BaseStream.Position;
bw.Write(dat.FileList[i].Buffer, 0, dat.FileList[i].Buffer.Length);
i++;
}
bw.Write((int)dat.FilesTotal);
i=0;
int treeSize = (int)bw.BaseStream.Position;
while (i < dat.FilesTotal) // Write DirTree
{
bw.Write((int)dat.FileList[i].FileNameSize);
bw.Write(dat.FileList[i].Path.ToCharArray(0, dat.FileList[i].Path.Length));
bw.Write(dat.FileList[i].Compression);
bw.Write(dat.FileList[i].UnpackedSize);
bw.Write(dat.FileList[i].PackedSize);
bw.Write(dat.FileList[i].Offset);
i++;
}
bw.Write((int)(bw.BaseStream.Position - treeSize) + 4);
bw.Write((int)bw.BaseStream.Position+4);
}
