public DataFile Decompress(DataFile dataFile)
{
var inputBytes = dataFile.GetAllBytes();
var outputList = new LZDecoderList();
var lzByteConverter = new LZByteConverter();
var bitIndexer = new BitIndexer(inputBytes);
while (!bitIndexer.AtEnd())
{
// Calculate the UnevenByte length in bits
var ubLength =
lzByteConverter.GetUnevenByteLength(bitIndexer.GetNext());
bitIndexer.GoToPrevious(); // Unread the bit
// If it cannot fit within the remaining bits, we must be done
if (ubLength > bitIndexer.Remaining)
{
break;
}
// Get the bits
var ub = bitIndexer.GetNextRange(ubLength);
// Convert UnevenByte to EncodedLZByte
var eb = lzByteConverter.ToEncodedByte(ub);
// Decode and add encoded byte to list
outputList.DecodeAndAddEncodedByte(eb);
}
// Turn the list into an array and return it
return(new DataFile(outputList.ToArray()));
}
public DataFile Compress(DataFile input)
{
var slidingWindow = new SlidingWindow(input.GetAllBytes());
var lzByteConverter = new LZByteConverter();
var bitString = new BitString();
while (!slidingWindow.AtEnd())
{
// Encode the next byte
var eb = slidingWindow.Slide();
// Convert to UnevenByte
var ub = lzByteConverter.ToUnevenByte(eb);
// Add to bitString
bitString.Append(ub);
}
return(new DataFile(bitString.ToArray()));
}