private void extractToolStripMenuItem_Click(object sender, EventArgs e)
{
TreeNode node = this.resourceView.SelectedNode;
SCI32Resource res = null;
try
{
if (this.ResourceDirectories.TryGetResourceByFilename(node.Name, out res))
{
string ext = SCI32Resource.ExtentionFromResourceType(res.ResourceType);
saveFileDialog1.Filter = string.Format("SCI32 {0}|{1}", res.ResourceType, ext);
saveFileDialog1.FileName = res.FileName;
DialogResult result = saveFileDialog1.ShowDialog();
if (result == System.Windows.Forms.DialogResult.OK)
{
byte[] file = new byte[res.FileData.Length - 8];
Array.Copy(res.FileData, 8, file, 0, file.Length);
string _file = Encoding.Default.GetString(file);
try
{
bool compresed = res.CompressedLength != res.UnCompressedLength;
if (compresed)
{
LZWDecoder decoder = new LZWDecoder();
string sfile = decoder.Decode(_file);
//file = Encoding.ASCII.GetBytes(sfile);
}
File.WriteAllBytes(saveFileDialog1.FileName, file);
}
catch (Exception ex) { MessageBox.Show(string.Format("Unable to save file {0}, Error was {1}", res.FileName, ex.Message)); }
}
}
}
catch { }
}
/// <summary>
/// Reads from the specified stream.
/// </summary>
/// <param name="stream">The stream.</param>
/// <param name="descriptor">The descriptor.</param>
/// <returns>
/// The resulting FrameIndices object
/// </returns>
public static FrameIndices Read(Stream stream, ImageDescriptor descriptor)
{
var DataSize = stream.ReadByte();
var Decoder = new LZWDecoder(stream);
return(new FrameIndices(Decoder.Decode(descriptor.Width, descriptor.Height, DataSize), 0));
}
static void Main(string[] args)
{
Console.WriteLine("Generate ANSI table ...");
ANSI ascii = new ANSI();
ascii.WriteToFile();
Console.WriteLine("ANSI table generated.");
Console.WriteLine("Start encoding " + fileToCompress + " ...");
string text = File.ReadAllText(fileToCompress, System.Text.ASCIIEncoding.Default);
LZWEncoder encoder = new LZWEncoder();
byte[] b = encoder.EncodeToByteList(text);
File.WriteAllBytes(encodedFile, b);
Console.WriteLine("File " + fileToCompress + " encoded to " + encodedFile);
Console.WriteLine("Start decoding " + encodedFile);
LZWDecoder decoder = new LZWDecoder();
byte[] bo = File.ReadAllBytes(encodedFile);
string decodedOutput = decoder.DecodeFromCodes(bo);
File.WriteAllText(decodedFile, decodedOutput, System.Text.Encoding.Default);
Console.WriteLine("File " + encodedFile + " decoded to " + decodedFile);
}
public static byte[] decompress(byte[] compressed, CompressionMethod compId, int expectedByteCount)
{
switch (compId)
{
case CompressionMethod.UNCOMPRESSED:
return(compressed);
case CompressionMethod.LZW:
var lzwDecoder = new LZWDecoder();
string decompressed = lzwDecoder.Decode(compressed);
byte[] bytes = new byte[expectedByteCount];
for (int i = 0; i < bytes.Length; i++)
{
bytes[i] = (byte)decompressed[i];
}
return(bytes);
case CompressionMethod.DEFLATE:
case CompressionMethod.ADOBE_DEFLATE:
return(deflateDecompress(compressed, expectedByteCount));
case CompressionMethod.PACKBITS:
return(packbitsDecompress(compressed, expectedByteCount));
default:
throw new ReadFileException("Unsupported comnpression");
}
}
public static void Decode(string arquivo)
{
//Carrega arquivo comprimido
byte[] dados = Arquivo.AbrirEmBytes(arquivo);
BitArray bits = new BitArray(dados);
Console.WriteLine("Iniciada a decompressão");
DateTime dataInicial = DateTime.Now;
HuffmanTree huffman = new HuffmanTree();
//Decodificando a árvore huffman
string huffmanDecoded = huffman.Decode(bits);
LZWDecoder lZWDecoder = new LZWDecoder();
//Decodificando LZW
string conteudo = lZWDecoder.Decode(huffmanDecoded);
DateTime dataFinal = DateTime.Now;
string tempoDecorrido = (dataFinal - dataInicial).TotalSeconds.ToString("N2");
//Contabiliza apenas os tempos para decompressão. Igora tempo de IO
Console.WriteLine($"Arquivo descomprimido em {tempoDecorrido} segundos");
Arquivo.Gravar(conteudo, $"{arquivo.Split('.')[0]} - Descomprimido.txt");
}
private byte[] ReadFrameIndices(GifImageDescriptor imageDescriptor)
{
int dataSize = _stream.ReadByte();
LZWDecoder lzwDecoder = new LZWDecoder(_stream);
byte[] indices = lzwDecoder.DecodePixels(imageDescriptor.Width, imageDescriptor.Height, dataSize);
return(indices);
}
public static void decode(string filename)
{
var fileContent = FileWrapper.openInBytes(filename);
var deltaDecoded = Delta.decode(fileContent);
var decoder = new LZWDecoder();
var lzwDecoded = decoder.Decode(deltaDecoded);
FileWrapper.write(lzwDecoded, getDecodedFilename(filename));
}
public override byte[] Decompress(Stream s, int dataLen, uint key)
{
var sb = new List <byte>();
var decoder = new LZWDecoder();
while (sb.Count < dataLen)
{
sb.AddRange(decoder.Decode(s.ReadBytes(s.ReadInt32())));
}
return(sb.ToArray());
}
public override byte[] Decompress(Stream s, int dataLen, uint key)
{
var sb = new List<byte>();
var decoder = new LZWDecoder();
while (sb.Count < dataLen)
{
sb.AddRange(decoder.Decode(s.ReadBytes(s.ReadInt32())));
}
return sb.ToArray();
}
private void btnUnpack_Click(object sender, EventArgs e)
{
OpenFileDialog opf = new OpenFileDialog();
opf.Filter = "*.lzw|*.lzw";
if (opf.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
txtPath.Text = opf.FileName;
var buffer = File.ReadAllBytes(opf.FileName);
LZWDecoder decoder = new LZWDecoder();
var text = decoder.DecodeFromCodes(buffer);
File.WriteAllText(opf.FileName.Replace(".lzw", ""), text, System.Text.Encoding.Default);
MessageBox.Show("Decoding complete.");
}
}
private void Decompress(object sender, RoutedEventArgs e)
{
if (!filenameCom.fileIsEmpty())
{
string noteCompressed = @"D:\RealEncAndCom\noteCompressed.txt";
string noteDecompressed = @"D:\RealEncAndCom\noteDecompressed" + fileExtension;
File.Delete(noteDecompressed);
LZWDecoder decoder = new LZWDecoder();
byte[] bo = File.ReadAllBytes(noteCompressed);
string decodedOutput = decoder.DecodeFromCodes(bo);
File.WriteAllText(noteDecompressed, decodedOutput, System.Text.Encoding.Default);
decomLabel1.Content = "Файл был распакован!";
}
else
{
decomLabel1.Content = "Файл не был распокван!";
}
}
public static void Do()
{
Console.WriteLine("Generate ANSI table ...");
var ascii = new Ansi();
ascii.WriteToFile();
Console.WriteLine("ANSI table generated.");
Console.WriteLine("Start encoding " + _fileToCompress + " ...");
var text = File.ReadAllText(_fileToCompress);
var encoder = new LZWEncoder();
var b = encoder.EncodeToByteList(text);
File.WriteAllBytes(_encodedFile, b);
Console.WriteLine("File " + _fileToCompress + " encoded to " + _encodedFile);
Console.WriteLine("Start decoding " + _encodedFile);
var decoder = new LZWDecoder();
var bo = File.ReadAllBytes(_encodedFile);
var decodedOutput = decoder.DecodeFromCodes(bo);
File.WriteAllText(_decodedFile, decodedOutput, Encoding.Default);
Console.WriteLine("File " + _encodedFile + " decoded to " + _decodedFile);
}
public static byte[] LzwDecode(byte[] data)
{
try
{
LZWDecoder lzw = new LZWDecoder();
MemoryStream stream = new MemoryStream();
lzw.Decode(data, stream);
return stream.GetBuffer();
}
catch (Exception e)
{
MessageBox.Show(e.ToString() );
}
return new byte[0];
}
static List <HashTableElement> LoadFile(string path, int fileId)
{
using (var br = new BinaryReader(File.OpenRead(path)))
{
if ("ARCH000" != Encoding.ASCII.GetString(br.ReadBytes(7)))
{
Console.WriteLine("Not a TBAR file");
Environment.Exit(1);
}
bool compressed = br.ReadByte() == 1;
int offset = br.ReadInt32();
short amount = br.ReadInt16();
br.BaseStream.Position = offset;
List <HashTableElement> elements = new List <HashTableElement>(amount);
for (var i = 0; i < amount; i++)
{
var element = new HashTableElement();
element.fileId = fileId;
element.elementId = br.ReadInt32();
element.specialHash = br.ReadUInt32();
element.offsetInFile = br.ReadInt32();
element.sizeInFile = br.ReadInt32();
element.checksum = br.ReadInt32();
elements.Add(element);
}
for (var i = 0; i < amount; i++)
{
var element = elements[i];
br.BaseStream.Position = element.offsetInFile;
element.contents = br.ReadBytes(element.sizeInFile);
elements[i] = element;
byte[] cleanData;
if (compressed)
{
uint hur = (uint)(element.elementId);
//if (hur != (uint)402372392)
// continue;
File.WriteAllBytes(Path.Combine("output", hur + "_RAW.bin"), element.contents);
cleanData = new byte[4];
int cleanDataOffset = 0;
LZWDecoder decoder = new LZWDecoder();
bool nosave = false;
string buffertje = "";
for (var j = 0; j < element.sizeInFile;)
{
try
{
int len = BitConverter.ToInt32(element.contents, j);
j += 4;
byte[] blah = new byte[len];
Console.WriteLine("Reading blob {0} - {1}", j, j + len);
Buffer.BlockCopy(element.contents, j, blah, 0, len);
j += len;
var output = decoder.DecodeFromCodes(blah);
buffertje += output;
if (cleanData.Length < (cleanDataOffset + output.Length))
{
Array.Resize <byte>(ref cleanData, cleanDataOffset + output.Length);
}
for (var k = 0; k < output.Length; k++)
{
cleanData[cleanDataOffset++] = (byte)output[k];
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
nosave = true;
break;
}
//Console.WriteLine(output);
//File.AppendAllText(filename, output);
//break;
}
//if (nosave)
// continue;
File.WriteAllText(Path.Combine("output", hur + "_text.txt"), buffertje);
}
else
{
cleanData = new byte[element.sizeInFile];
uint derp = (uint)(element.specialHash ^ 0xF9524287 | 1);
for (var j = 0; j < element.sizeInFile; j += 1024)
{
var blobsize = Math.Min(element.sizeInFile - j, 1024);
byte[] blah = new byte[1024];
Buffer.BlockCopy(element.contents, j, blah, 0, blobsize);
derp = Crypto(derp, blah);
Buffer.BlockCopy(blah, 0, cleanData, j, blobsize);
}
}
string ext = ".bin";
if (cleanData[0] == 0x89 && cleanData[1] == 0x50 && cleanData[2] == 0x4E && cleanData[3] == 0x47)
{
ext = ".png";
}
else if (cleanData[0] == 0x4F && cleanData[1] == 0x67 && cleanData[2] == 0x67)
{
ext = ".ogg";
}
else if (cleanData[0] == 0x42 && cleanData[1] == 0x4D && cleanData[2] == 0x46)
{
ext = ".bmf";
}
else if (cleanData[0] == 0x52 && cleanData[1] == 0x49 && cleanData[2] == 0x46 && cleanData[3] == 0x46)
{
ext = ".wav";
}
if (compressed)
{
ext = "_compressed" + ext;
}
var filename = Path.Combine("output", (uint)(element.elementId) + ext);
File.WriteAllBytes(filename, cleanData);
}
return(elements);
}
}
static void ReadImage(StreamHelper streamHelper, Stream fs, GifImage gifImage, List<GraphicEx> graphics, int frameCount)
{
ImageDescriptor imgDes = streamHelper.GetImageDescriptor(fs);
GifFrame frame = new GifFrame();
frame.ImageDescriptor = imgDes;
frame.LocalColorTable = gifImage.GlobalColorTable;
if (imgDes.LctFlag)
{
frame.LocalColorTable = streamHelper.ReadByte(imgDes.LctSize*3);
}
LZWDecoder lzwDecoder = new LZWDecoder(fs);
int dataSize = streamHelper.Read();
frame.ColorDepth = dataSize;
byte[] piexel = lzwDecoder.DecodeImageData(imgDes.Width, imgDes.Height, dataSize);
frame.IndexedPixel = piexel;
int blockSize = streamHelper.Read();
DataStruct data = new DataStruct(blockSize, fs);
GraphicEx graphicEx = graphics[frameCount];
frame.GraphicExtension = graphicEx;
Bitmap img = GetImageFromPixel(piexel, frame.Palette, imgDes.InterlaceFlag, imgDes.Width, imgDes.Height);
frame.Image = img;
gifImage.Frames.Add(frame);
}
private byte[] ReadFrameIndices(GifImageDescriptor imageDescriptor)
{
int dataSize = _stream.ReadByte();
LZWDecoder lzwDecoder = new LZWDecoder(_stream);
byte[] indices = lzwDecoder.DecodePixels(imageDescriptor.Width, imageDescriptor.Height, dataSize);
return indices;
}
