/// <summary>
/// Set the compression method to the best.
/// </summary>
public void SetBestCompression()
{
//Best method.
PackCompression best = (PackCompression)0;
uint least = uint.MaxValue;
//Try each compression.
foreach (var v in Enum.GetValues(typeof(PackCompression)))
{
CompressionMethod = (PackCompression)v;
byte[] b = Write();
if (b.Length < least)
{
best = CompressionMethod;
least = (uint)b.Length;
}
}
//Set method.
CompressionMethod = best;
}
/// <summary>
/// Read the pack.
/// </summary>
/// <param name="r">The reader.</param>
public override void Read(FileReader r)
{
//Try to reset stream.
try {
FileReader.BaseStream.Dispose();
FileReader.Dispose();
} catch { }
//Read the data.
r.ReadUInt32();
CompressionMethod = (PackCompression)r.ReadUInt32();
uint size = r.ReadUInt32();
r.ReadUInt32();
MemoryStream src = new MemoryStream(r.ReadBytes((int)size));
MemoryStream o = new MemoryStream();
//Decompress data.
switch (CompressionMethod)
{
case PackCompression.Gzip:
GZip.Decompress(src, o, false);
break;
case PackCompression.Bzip2:
BZip2.Decompress(src, o, false);
break;
case PackCompression.Lzma:
byte[] lzmaTemp = LZMA.Engine.Decompress(src.ToArray());
o.Write(lzmaTemp, 0, lzmaTemp.Length);
break;
}
//Clean up.
FileReader = new FileReader(o);
src.Dispose();
}
