public Stream ContentFile(PadStream padStream, long position, long bytesCount)
{
padStream.keys = new byte[] { 63 };
padStream.Position = position;
byte[] buffer = new byte[bytesCount];
for (long i = 0; i < bytesCount; i++)
{
buffer[i] = (byte)padStream.ReadByte();
}
MemoryStream memoryStream = new MemoryStream(buffer, false);
padStream.keys = this.keys;
return(memoryStream);
}
public UnPak(string pakFile)
{
if (!File.Exists(pakFile))
{
throw new FileNotFoundException("文件不存在！");
}
string pakDirectory = Path.GetDirectoryName(pakFile) + "/" + Path.GetFileNameWithoutExtension(pakFile);
Stream stream = new FileStream(pakFile, FileMode.Open);
PadStream padStream = new PadStream(stream, this.keys);
BinaryReader binaryReader = new BinaryReader(padStream, Encoding.UTF8, true);
byte[] array = new byte[4];
if (stream.Read(array, 0, array.Length) != array.Length || array[0] != (byte)'P' || array[1] != (byte)'K' || array[2] != (byte)'2' || array[3] != (byte)'\0')
{
throw new FileLoadException("该文件不是Survivalcraft2(2.2)的PAK文件！");
}
long num = binaryReader.ReadInt64();
int num2 = binaryReader.ReadInt32();
List <PakInfo> listFileStream = new List <PakInfo>(num2);
for (int i = 0; i < num2; i++)
{
string fileName = binaryReader.ReadString();
string typeName = binaryReader.ReadString();
long num3 = binaryReader.ReadInt64() + num;
long num4 = binaryReader.ReadInt64();
//Console.WriteLine($"{i}: {typeName},{fileName},{num3},{num4}");
long position = binaryReader.BaseStream.Position;
listFileStream.Add(new PakInfo
{
fileStream = ContentFile(padStream, num3, num4),
fileName = fileName,
typeName = typeName
});
binaryReader.BaseStream.Position = position;
}
Load(listFileStream, pakDirectory);
binaryReader.Dispose();
padStream.Dispose();
}
public Pak(string PakDirectory)
{
if (!Directory.Exists(PakDirectory))
{
throw new DirectoryNotFoundException("将要封包的文件夹不存在");
}
List <ContentFileInfo> list = new List <ContentFileInfo>();
list = ContentFiles(list, PakDirectory);
List <long> list2 = new List <long>();
new DirectoryInfo(PakDirectory);
if (PakDirectory.EndsWith("/") || PakDirectory.EndsWith("\\"))
{
PakDirectory = PakDirectory.Substring(0, PakDirectory.Length - 1);
}
FileStream fileStream;
if (File.Exists(PakDirectory + ".pak"))
{
if (File.Exists(PakDirectory + ".pak.bak"))
{
File.Delete(PakDirectory + ".pak.bak");
}
File.Move(PakDirectory + ".pak", PakDirectory + ".pak.bak");
}
fileStream = new FileStream(PakDirectory + ".pak", FileMode.Create);
PadStream myStream = new PadStream(fileStream, this.keys);
BinaryWriter binaryWriter = new BinaryWriter(myStream, Encoding.UTF8, true);
fileStream.WriteByte((byte)'P');
fileStream.WriteByte((byte)'K');
fileStream.WriteByte((byte)'2');
fileStream.WriteByte((byte)'\0');
binaryWriter.Write((long)0);
binaryWriter.Write(list.Count);
foreach (ContentFileInfo current in list)
{
binaryWriter.Write(current.fileName.Substring(PakDirectory.Length + 1, current.fileName.Length - PakDirectory.Length - 1));
binaryWriter.Write(current.typeName);
list2.Add(binaryWriter.BaseStream.Position);
binaryWriter.Write((long)0);
binaryWriter.Write((long)0);
}
long position = binaryWriter.BaseStream.Position;
binaryWriter.BaseStream.Position = 4L;
binaryWriter.Write(position);
long num = position;
int num2 = 0;
long num3;
foreach (ContentFileInfo info in list)
{
binaryWriter.BaseStream.Position = num;
binaryWriter.Write((byte)222);
binaryWriter.Write((byte)173);
binaryWriter.Write((byte)190);
binaryWriter.Write((byte)239);
num3 = binaryWriter.BaseStream.Position;
PadStream myStream2 = new PadStream(Load(info.fileName, info.typeName), new byte[] { 63 });
byte[] buffer = new byte[myStream2.Length];
myStream2.Read(buffer, 0, buffer.Length);
for (int i = 0; i < buffer.Length; i++)
{
fileStream.WriteByte(buffer[i]);
}
num = binaryWriter.BaseStream.Position;
binaryWriter.BaseStream.Position = list2[num2++];
binaryWriter.Write(num3 - position);
binaryWriter.Write(myStream2.Length);
}
binaryWriter.Dispose();
fileStream.Dispose();
}
