public object Clone()
{
var clone = new CompressedData()
{
Data = this.Data != null ? (byte[])this.Data.Clone() : null,
};
clone._Blocks.AddRange(this._Blocks);
return(clone);
}
public static CompressedData Pack(Stream input)
{
var compressedData = new CompressedData();
using (var output = new MemoryStream())
{
uint virtualOffset = 0;
uint realOffset = 4;
while (input.Position < input.Length)
{
var length = (uint)Math.Min(0x40000, input.Length - input.Position);
using (var block = new MemoryStream())
{
var zlib = new DeflaterOutputStream(block); //, new Deflater(9, false));
zlib.WriteFromStream(input, length);
zlib.Finish();
compressedData.Blocks.Add(new Block()
{
VirtualOffset = virtualOffset,
FileOffset = realOffset,
IsCompressed = true,
});
block.Position = 0;
output.WriteFromStream(block, block.Length);
realOffset += (uint)block.Length;
}
virtualOffset += length;
}
output.Position = 0;
compressedData.Data = new byte[output.Length];
output.Read(compressedData.Data, 0, compressedData.Data.Length);
compressedData.Blocks.Add(new Block()
{
VirtualOffset = virtualOffset,
FileOffset = realOffset,
IsCompressed = true,
});
}
return(compressedData);
}
public void Deserialize(Stream input, Endian endian)
{
var baseOffset = input.Position;
var magic = input.ReadValueU32(endian);
if (magic != Signature)
{
throw new FormatException();
}
this.Version = input.ReadValueU32(endian);
if (this.Version != 1)
{
throw new FormatException();
}
uint offsetData = input.ReadValueU32(endian);
uint offsetHeader = input.ReadValueU32(endian);
uint offsetDescriptor = input.ReadValueU32(endian);
if (offsetData != 20)
{
throw new FormatException();
}
this.Data = new CompressedData();
this.Data.Deserialize(input, endian);
if (baseOffset + offsetHeader != input.Position)
{
throw new FormatException();
}
this.Header = new CompressedData();
this.Header.Deserialize(input, endian);
if (baseOffset + offsetDescriptor != input.Position)
{
throw new FormatException();
}
this.Descriptor = new CompressedData();
this.Descriptor.Deserialize(input, endian);
}