public void Extract(PAKEntry file, string destination)
{
if (!Directory.Exists(destination)) { Directory.CreateDirectory(destination); }
using (BinaryWriter bw = new BinaryWriter(new FileStream(destination + "\\" + file.Name, FileMode.Create)))
using (FileStream fs = new FileStream(location + name + ".pak", FileMode.Open))
{
fs.Seek(file.Offset, SeekOrigin.Begin);
if (file.Size >= 8)
{
if ((fs.ReadByte() ^ fs.ReadByte()) == 122 && (fs.ReadByte() ^ fs.ReadByte()) == 14)
{
int a, b, c, d;
a = fs.ReadByte();
b = fs.ReadByte();
c = fs.ReadByte();
d = fs.ReadByte();
a = 1 * (a ^ d);
b = 256 * (b ^ d);
c = 65536 * (c ^ d);
d = 16777216 * (d ^ d);
file.Size = (a + b + c + d);
// Compressed!
fs.Seek(2, SeekOrigin.Current);
byte[] buff = new byte[file.Size];
using (DeflateStream ds = new DeflateStream(fs, CompressionMode.Decompress))
{
ds.Read(buff, 0, file.Size);
bw.Write(buff);
buff = null;
}
}
else
{
// Uncompressed!
fs.Seek(file.Offset, SeekOrigin.Begin);
byte[] buff = new byte[file.Size];
fs.Read(buff, 0, file.Size);
bw.Write(buff);
buff = null;
}
}
}
}
public static PAK Load(string path)
{
FileInfo fi = new FileInfo(path);
Logger.LogToFile(Logger.LogLevel.Info, "{0}", path);
PAK pak = new PAK();
pak.name = Path.GetFileNameWithoutExtension(path);
pak.location = Path.GetDirectoryName(path) + "\\";
char[] filename = new char[255];
bool[] rollback = new bool[255];
byte code = 0;
int i = 0;
string sBase = "";
using (BinaryReader brDir = new BinaryReader(fi.OpenRead()))
{
i = 0;
while (brDir.BaseStream.Position < brDir.BaseStream.Length)
{
do
{
filename[i] = (char)brDir.ReadByte();
code = brDir.ReadByte();
if (code == 136) { sBase = new string(filename, 0, i); }
if (code == 192) { rollback[i] = true; }
i++;
}
while ((code & 8) != 8);
var entry = new PAKEntry();
entry.Name = new string(filename, 0, i);
entry.Offset = (int)brDir.ReadUInt32();
entry.Size = (int)brDir.ReadUInt32();
pak.contents.Add(entry);
switch (code)
{
case 72:
// do nothing
break;
case 136:
i = sBase.Length;
break;
case 200:
rollback[i - 1] = true;
break;
default:
i = Array.LastIndexOf(rollback, true);
if (i > -1) { rollback[i] = false; }
break;
}
}
}
return pak;
}
public void Extract(PAKEntry file, string destination)
{
if (!Directory.Exists(destination)) { Directory.CreateDirectory(destination); }
using (BinaryWriter bw = new BinaryWriter(new FileStream(destination + "\\" + file.Name, FileMode.Create)))
{
using (FileStream fs = new FileStream(this.location + this.name + ".pak", FileMode.Open))
{
fs.Seek(file.Offset, SeekOrigin.Begin);
if (file.Size >= 8)
{
if ((fs.ReadByte() ^ fs.ReadByte()) == 122 && (fs.ReadByte() ^ fs.ReadByte()) == 14)
{
int a, b, c, d;
a = fs.ReadByte();
b = fs.ReadByte();
c = fs.ReadByte();
d = fs.ReadByte();
a = 1 * (a ^ d);
b = 256 * (b ^ d);
c = 65536 * (c ^ d);
d = 16777216 * (d ^ d);
file.Size = (a + b + c + d);
// Compressed!
fs.Seek(2, SeekOrigin.Current);
byte[] buff = new byte[file.Size];
using (DeflateStream ds = new DeflateStream(fs, CompressionMode.Decompress))
{
ds.Read(buff, 0, file.Size);
bw.Write(buff);
buff = null;
}
}
else
{
// Uncompressed!
fs.Seek(file.Offset, SeekOrigin.Begin);
byte[] buff = new byte[file.Size];
fs.Read(buff, 0, file.Size);
bw.Write(buff);
buff = null;
}
}
}
}
}
public static PAK Load(string path)
{
FileInfo fi = new FileInfo(path);
Logger.LogToFile(Logger.LogLevel.Info, "{0}", path);
PAK pak = new PAK()
{
name = Path.GetFileNameWithoutExtension(path),
location = Path.GetDirectoryName(path) + "\\"
};
char[] filename = new char[255];
bool[] rollback = new bool[255];
byte code = 0;
int i = 0;
string sBase = "";
using (BinaryReader brDir = new BinaryReader(fi.OpenRead()))
{
i = 0;
while (brDir.BaseStream.Position < brDir.BaseStream.Length)
{
do
{
filename[i] = (char)brDir.ReadByte();
code = brDir.ReadByte();
if (code == 136) { sBase = new string(filename, 0, i); }
if (code == 192) { rollback[i] = true; }
i++;
}
while ((code & 8) != 8);
PAKEntry entry = new PAKEntry()
{
Name = new string(filename, 0, i),
Offset = (int)brDir.ReadUInt32(),
Size = (int)brDir.ReadUInt32()
};
pak.contents.Add(entry);
switch (code)
{
case 72:
// do nothing
break;
case 136:
i = sBase.Length;
break;
case 200:
rollback[i - 1] = true;
break;
default:
i = Array.LastIndexOf(rollback, true);
if (i > -1) { rollback[i] = false; }
break;
}
}
}
return pak;
}
