public static File[] Extract(Stream Packget)
{
StructReader Reader = new StructReader(Packget, Encoding: Encoding.ASCII);//not sure
PACHeader Header = new PACHeader();
Reader.ReadStruct(ref Header);
if (Header.Signature != "PAC ")
{
throw new Exception("Bad Signature");
}
File[] Files = new File[Header.FileCount + 1];
Files[0] = new File()
{
FileName = HeaderInfo,
Content = new MemoryStream(Header.Dummy)
};
for (int i = 1; i < Files.Length; i++)
{
Files[i] = new File();
Reader.ReadStruct(ref Files[i]);
Files[i].FileName = Files[i].FileName.TrimEnd('\x0');
Files[i].Content = new VirtStream(Reader.BaseStream, Files[i].Offset, Files[i].Length);
}
return(Files);
}
public static void Repack(File[] Files, Stream Output, bool CloseStreams = true)
{
if ((from x in Files where x.FileName == HeaderInfo select x).Count() != 1)
{
throw new Exception("Header Info Not Found");
}
byte[] HInfo = new byte[0x7F8];
File tmp = (from x in Files where x.FileName == HeaderInfo select x).First();
tmp.Content.Read(HInfo, 0, HInfo.Length);
tmp.Content.Close();
Files = (from x in Files where x.FileName != HeaderInfo select x).ToArray();
StructWriter Writer = new StructWriter(Output, Encoding: Encoding.ASCII);
PACHeader Header = new PACHeader()
{
Signature = "PAC ",
FileCount = (uint)Files.Length,
Dummy = HInfo
};
Writer.WriteStruct(ref Header);
uint TotalHeaderLen = (uint)((Tools.GetStructLength(new File()) * Files.Length) + Tools.GetStructLength(Header));
for (uint i = 0, x = 0; i < Files.Length; i++)
{
tmp = new File()
{
FileName = Files[i].FileName,
Length = (uint)Files[i].Content.Length,
Offset = x + TotalHeaderLen
};
Writer.WriteStruct(ref tmp);
x += tmp.Length;
}
for (uint i = 0; i < Files.Length; i++)
{
Files[i].Content.CopyTo(Writer.BaseStream);
if (CloseStreams)
{
Files[i].Content.Close();
}
}
Writer.Flush();
if (CloseStreams)
{
Writer.Close();
}
}