public void ExtractData(string path, string name, int size, string onlyExt)
{
int magic = reader.ReadInt32BE (); // BLTE (raw)
if (magic != 0x424c5445) {
Console.WriteLine ("Wrong Magic pos: {0}, start: {1} ", reader.BaseStream.Position, startPos);
throw new Exception ();
return;
}
int compDataOffset = reader.ReadInt32BE ();
int chunkCount = 0;
if (compDataOffset != 0) {
int unk1 = reader.ReadInt16BE ();
chunkCount = reader.ReadInt16BE ();
}
BLTEChunk[] chunks;
if (compDataOffset == 0) { //if this is 0 there's just one chunk with no chunk-headers
chunkCount = 1;
chunks = new BLTEChunk[chunkCount];
chunks [0] = new BLTEChunk ();
chunks [0].compSize = size - 38; // no idea why.
chunks [0].hash = null;
chunks [0].decompSize = Int32.MaxValue; // we need to find a way to properly handle these :/ No idea about the file size
} else {
if (chunkCount < 0) {
Console.WriteLine ("No chunks found, compDataOffset: {0}, unk1: {1}, chunkCount: {2}, pos: {3}, start: {4}", compDataOffset, false, chunkCount, reader.BaseStream.Position, startPos);
return;
}
chunks = new BLTEChunk[chunkCount];
for (int i = 0; i < chunkCount; ++i) {
chunks [i] = new BLTEChunk ();
chunks [i].compSize = reader.ReadInt32BE ();
chunks [i].decompSize = reader.ReadInt32BE ();
chunks [i].hash = reader.ReadBytes (16);
}
}
if (!Directory.Exists(path))
Directory.CreateDirectory(path);
string ext = ".tmp";
string tmpName = path + "/" + name + ext;
var f = File.Open (tmpName, FileMode.Create);
for (int i = 0; i < chunkCount; ++i) {
chunks [i].data = reader.ReadBytes (chunks [i].compSize);
byte[] hh = md5.ComputeHash (chunks [i].data);
if (compDataOffset != 0 && !hh.VerifyHash (chunks [i].hash)) {
Console.WriteLine ("MD5 missmatch!");
return;
}
switch (chunks [i].data [0]) {
case 0x4E: // Not compressed;
{
if ((i == 0 || i == 0)) {
ext = GetFileExt (chunks [i].data, 1);
}
if (chunks [i].data.Length - 1 != chunks [i].decompSize) {
Console.WriteLine ("Possible error (1) !");
}
f.Write (chunks [i].data, 1, chunks [i].decompSize);
}
break;
case 0x5A:
{
byte[] dec = Decompress (chunks [i].data);
if ((i == 0 || i == 0)) {
ext = GetFileExt (dec, 0);
}
f.Write (dec, 0, dec.Length);
}
break;
default:
Console.WriteLine ("Unknown byte {0:X2} at {1:X8}", chunks [i].data [0], reader.BaseStream.Position - chunks [i].data.Length);
break;
}
}
string finalName = path + "/" + name + "." + ext;
if (onlyExt == null || ext == onlyExt) {
Console.WriteLine ("Writing file {0}", finalName);
f.Close ();
if (File.Exists (finalName))
File.Delete (finalName);
File.Move (tmpName, finalName);
} else {
f.Close ();
if (File.Exists (tmpName))
File.Delete (tmpName);
}
}
public void ExtractData(string path, string name, int size, string onlyExt)
{
int magic = reader.ReadInt32BE(); // BLTE (raw)
if (magic != 0x424c5445)
{
Console.WriteLine("Wrong Magic,name: {3} size: {2} pos: {0}, start: {1}", reader.BaseStream.Position, startPos, size, name);
throw new Exception();
return;
}
int compDataOffset = reader.ReadInt32BE();
int chunkCount = 0;
if (compDataOffset != 0)
{
int unk1 = reader.ReadInt16BE();
chunkCount = reader.ReadInt16BE();
}
BLTEChunk[] chunks;
if (compDataOffset == 0) //if this is 0 there's just one chunk with no chunk-headers
{
chunkCount = 1;
chunks = new BLTEChunk[chunkCount];
chunks [0] = new BLTEChunk();
chunks [0].compSize = size - 38; // no idea why.
chunks [0].hash = null;
chunks [0].decompSize = Int32.MaxValue; // we need to find a way to properly handle these :/ No idea about the file size
}
else
{
if (chunkCount < 0)
{
Console.WriteLine("No chunks found, compDataOffset: {0}, unk1: {1}, chunkCount: {2}, pos: {3}, start: {4}", compDataOffset, false, chunkCount, reader.BaseStream.Position, startPos);
return;
}
chunks = new BLTEChunk[chunkCount];
for (int i = 0; i < chunkCount; ++i)
{
chunks [i] = new BLTEChunk();
chunks [i].compSize = reader.ReadInt32BE();
chunks [i].decompSize = reader.ReadInt32BE();
chunks [i].hash = reader.ReadBytes(16);
}
}
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
string ext = ".tmp";
string tmpName = path + "/" + name + ext;
var f = File.Open(tmpName, FileMode.Create);
for (int i = 0; i < chunkCount; ++i)
{
chunks [i].data = reader.ReadBytes(chunks [i].compSize);
byte[] hh = md5.ComputeHash(chunks [i].data);
if (compDataOffset != 0 && !hh.VerifyHash(chunks [i].hash))
{
Console.WriteLine("MD5 missmatch!");
return;
}
switch (chunks [i].data [0])
{
case 0x4E: // Not compressed;
{
if ((i == 0 || i == 0))
{
ext = GetFileExt(chunks [i].data, 1);
}
if (chunks [i].data.Length - 1 != chunks [i].decompSize)
{
Console.WriteLine("Possible error (1) !");
}
if (onlyExt == null || ext == onlyExt)
{
f.Write(chunks [i].data, 1, chunks [i].decompSize);
}
}
break;
case 0x5A:
{
byte[] dec = Decompress(chunks [i].data);
if ((i == 0 || i == 0))
{
ext = GetFileExt(dec, 0);
}
if (onlyExt == null || ext == onlyExt)
{
f.Write(dec, 0, dec.Length);
}
}
break;
default:
Console.WriteLine("Unknown byte {0:X2} at {1:X8}", chunks [i].data [0], reader.BaseStream.Position - chunks [i].data.Length);
break;
}
}
string finalName = path + "/" + name + "." + ext;
if (onlyExt == null || ext == onlyExt)
{
Console.WriteLine("Writing file {0}", finalName);
f.Close();
if (File.Exists(finalName))
{
File.Delete(finalName);
}
File.Move(tmpName, finalName);
}
else
{
f.Close();
if (File.Exists(tmpName))
{
File.Delete(tmpName);
}
}
}
