private static byte[] GetData(string file, bool wasCompressed, bool useCompression)
{
if (useCompression && wasCompressed)
{
var uncompressedData = File.ReadAllBytes(file);
var data = FalcomCompressor.Compress(uncompressedData);
return(data);
}
else
{
return(File.ReadAllBytes(file));
}
}
public static void Extract(string inputPath, string outputFolder)
{
var inputFolder = Path.GetDirectoryName(inputPath);
var fileName = Path.GetFileNameWithoutExtension(inputPath);
var dirFile = Path.Combine(inputFolder, $"{fileName}.dir");
if (!File.Exists(dirFile))
{
throw new FileNotFoundException($"No se ha encontrado el archivo {dirFile}");
}
Directory.CreateDirectory(outputFolder);
var logFile = Path.Combine(outputFolder, "Extract_Data.tf");
using (var dirFs = new FileStream(dirFile, FileMode.Open, FileAccess.Read, FileShare.Read))
using (var dirInput = new ExtendedBinaryReader(dirFs, Encoding.GetEncoding(1252)))
using (var datFs = new FileStream(inputPath, FileMode.Open, FileAccess.Read, FileShare.Read))
using (var datInput = new ExtendedBinaryReader(datFs, Encoding.UTF8))
using (var log = new ExtendedBinaryWriter(new FileStream(logFile, FileMode.Create), Encoding.GetEncoding(1252)))
{
var dirHeader = dirInput.ReadBytes(8);
var datHeader = datInput.ReadBytes(8);
if (!dirHeader.SequenceEqual(DIR_HEADER) || !datHeader.SequenceEqual(DAT_HEADER))
{
throw new InvalidDataException("El fichero no es válido");
}
var maxNumFiles = dirInput.ReadInt64();
log.Write(maxNumFiles);
var currentPos = dirInput.Position;
var endPos = dirInput.Length;
while (currentPos < endPos)
{
var name = dirInput.ReadString();
log.WriteString(name);
dirInput.Skip(3);
var compressedSize = dirInput.ReadInt32();
var maxSize = dirInput.ReadInt32();
var unknown2 = dirInput.ReadInt32();
var timestamp = dirInput.ReadInt32();
log.Write(compressedSize);
log.Write(maxSize);
log.Write(unknown2);
log.Write(timestamp);
var datOffset = dirInput.ReadInt32();
log.Write(datOffset);
if (datOffset != 0 && compressedSize != 0)
{
var outputFile = Path.Combine(outputFolder, name);
datInput.Seek(datOffset, SeekOrigin.Begin);
var data = datInput.ReadBytes(compressedSize);
try
{
var data2 = FalcomCompressor.Decompress(data);
File.WriteAllBytes(outputFile, data2);
log.Write(1); // Para saber si estaba comprimido o no
}
catch (Exception e)
{
File.WriteAllBytes(outputFile, data);
log.Write(0);
}
}
else
{
log.Write(0);
}
currentPos = dirInput.Position;
}
}
}
