private void _Unpack(string path)
{
string dir = $"{path}.files";
if (Directory.Exists(dir))
{
form.UpdateProgress(form.Controls["lblProgress"], "Removing Existing Directory");
Directory.Delete(dir, true);
}
Directory.CreateDirectory(dir);
PCKStream stream = new PCKStream(path);
stream.Seek(-4, SeekOrigin.End);
version = stream.ReadInt16();
events = new CountdownEvent(GetFilesCount(stream));
IEnumerator <PCKFileEntry> enumerator;
//Select wich version to read
if (version == 3)
{
enumerator = ReadFileV3(stream).GetEnumerator();
}
else
{
enumerator = ReadFileV2(stream).GetEnumerator();
}
while (enumerator.MoveNext())
{
string p = Path.Combine(dir, Path.GetDirectoryName(enumerator.Current.Path));
if (!Directory.Exists(p))
{
Directory.CreateDirectory(p);
}
form.UpdateProgress(form.Controls["lblProgress"],
$"Unpacking " +
$"{(form.Controls["progBar"] as ProgressBar).Value}" +
$"/{(form.Controls["progBar"] as ProgressBar).Maximum}: " +
$"{ enumerator.Current.Path }");
stream.Seek(enumerator.Current.Offset, SeekOrigin.Begin);
byte[] file = stream.ReadBytes(enumerator.Current.CompressedSize);
ThreadPool.QueueUserWorkItem(x => {
byte[] buffer = (x as object[])[0] as byte[];
PCKFileEntry entry = (x as object[])[1] as PCKFileEntry;
File.WriteAllBytes(Path.Combine(dir, entry.Path), buffer.Length < entry.Size ? PCKZlib.Decompress(buffer, entry.Size) : buffer);
events.Signal();
}, new object[] { file, enumerator.Current });
form.UpdateProgressBar(form.Controls["progBar"], "value", ((ProgressBar)form.Controls["progBar"]).Value + 1);
}
form.UpdateProgress(form.Controls["lblProgress"], "WaitThreads");
events.Wait();
stream.Dispose();
form.UpdateProgressBar(form.Controls["progBar"], "value", 0);
form.UpdateProgress(form.Controls["lblProgress"], "Ready");
}
public IEnumerable <PCKFileEntry> ReadFileV3(PCKStream stream)
{
stream.Seek(-8, SeekOrigin.End);
int FilesCount = stream.ReadInt32();
form.UpdateProgressBar(form.Controls["progBar"], "max", FilesCount);
stream.Seek(-280, SeekOrigin.End);
long FileTableOffset = stream.ReadInt64() ^ stream.key.KEY_1;
stream.Seek(FileTableOffset, SeekOrigin.Begin);
BinaryReader TableStream = new BinaryReader(new MemoryStream(stream.ReadBytes((int)(stream.GetLenght() - FileTableOffset - 288))));
for (int i = 0; i < FilesCount; ++i)
{
int EntrySize = TableStream.ReadInt32() ^ stream.key.KEY_1;
TableStream.ReadInt32();
yield return(new PCKFileEntry(TableStream.ReadBytes(EntrySize), version));
}
}
public byte[] ReadFile(PCKStream stream, PCKFileEntry file)
{
stream.Seek(file.Offset, SeekOrigin.Begin);
byte[] bytes = stream.ReadBytes(file.CompressedSize);
return(file.CompressedSize < file.Size ? PCKZlib.Decompress(bytes, file.Size) : bytes);
}
