public override Stream OpenEntry(ArcFile arc, Entry entry)
{
var input = arc.File.CreateStream(entry.Offset, entry.Size);
var packed_entry = entry as HypEntry;
if (null == packed_entry || !packed_entry.IsPacked)
{
return(input);
}
if (packed_entry.CompressionType > 3)
{
Trace.WriteLine(string.Format("{1}: Unknown compression type {0}",
packed_entry.CompressionType, packed_entry.Name),
"Kogado.PakOpener.OpenEntry");
return(input);
}
if (3 == packed_entry.CompressionType)
{
return(new InputCryptoStream(input, new NotTransform()));
}
try
{
if (2 == packed_entry.CompressionType)
{
var decoded = new MemoryStream((int)packed_entry.UnpackedSize);
try
{
var cocotte = new CocotteEncoder();
if (!cocotte.Decode(input, decoded))
{
throw new InvalidFormatException("Invalid Cocotte-encoded stream");
}
decoded.Position = 0;
return(decoded);
}
catch
{
decoded.Dispose();
throw;
}
}
// if (1 == packed_entry.CompressionType)
var unpacked = new byte[packed_entry.UnpackedSize];
var mariel = new MarielEncoder();
mariel.Unpack(input, unpacked, unpacked.Length);
return(new BinMemoryStream(unpacked, entry.Name));
}
finally
{
input.Dispose();
}
}
public override Stream OpenEntry(ArcFile arc, Entry entry)
{
var input = arc.File.CreateStream (entry.Offset, entry.Size);
var packed_entry = entry as KogadoEntry;
if (null == packed_entry || !packed_entry.IsPacked)
return input;
if (packed_entry.CompressionType > 3)
{
Trace.WriteLine (string.Format ("{1}: Unknown compression type {0}",
packed_entry.CompressionType, packed_entry.Name),
"Kogado.PakOpener.OpenEntry");
return input;
}
if (3 == packed_entry.CompressionType)
return new CryptoStream (input, new NotTransform(), CryptoStreamMode.Read);
try
{
if (2 == packed_entry.CompressionType)
{
var decoded = new MemoryStream ((int)packed_entry.UnpackedSize);
try
{
var cocotte = new CocotteEncoder();
if (!cocotte.Decode (input, decoded))
throw new InvalidFormatException ("Invalid Cocotte-encoded stream");
decoded.Position = 0;
return decoded;
}
catch
{
decoded.Dispose();
throw;
}
}
// if (1 == packed_entry.CompressionType)
var unpacked = new byte[packed_entry.UnpackedSize];
var mariel = new MarielEncoder();
mariel.Unpack (input, unpacked, unpacked.Length);
return new MemoryStream (unpacked);
}
finally
{
input.Dispose();
}
}
