public void FindMaxSequenceTest()
{
var data = new byte[] {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
7, 8, 9, 10, 12, 13,
7, 8, 9, 10, 11, 16
};
var LzMatcher = new LzMatcher(data, data.Length - 6, 0x1000, 3, 16, true);
var Result = LzMatcher.FindMaxSequence();
Assert.AreEqual("LzMatcher.FindSequenceResult(Offset=7, Size=5)", Result.ToString());
}
static public void HandleLzRle(byte[] Input, int StartPosition, int MinLzLength, int MaxLzLength, int MaxLzDistance, int MinRleLength, int MaxRleLength, bool AllowOverlapping, Action<int, byte> ByteCallback, Action<int, int, int> LzCallback, Action<int, byte, int> RleCallback)
{
bool UseRle = (RleCallback != null) && (MaxRleLength > 0);
var LzMatcher = new LzMatcher(Input, StartPosition, MaxLzDistance, MinLzLength, MaxLzLength, AllowOverlapping);
var RleMatcher = UseRle ? new RleMatcher(Input, StartPosition) : null;
for (int n = StartPosition; n < Input.Length; )
{
//Console.WriteLine("{0}", n);
var Result = LzMatcher.FindMaxSequence();
int RleLength = -1;
if (UseRle)
{
RleLength = RleMatcher.Length;
if (RleLength < MinRleLength) RleLength = 0;
if (RleLength > MaxRleLength) RleLength = MaxRleLength;
}
if (Result.Found && (!UseRle || (Result.Size > RleLength)))
{
//Console.WriteLine("RLE: {0}", RleLength);
LzCallback(n, Result.Offset - n, Result.Size);
n += Result.Size;
LzMatcher.Skip(Result.Size);
//Console.WriteLine(Result.Size);
if (UseRle) RleMatcher.Skip(Result.Size);
continue;
}
if (UseRle && (RleLength >= MinRleLength))
{
RleCallback(n, Input[n], RleLength);
n += RleLength;
//Console.WriteLine(RleLength);
LzMatcher.Skip(RleLength);
RleMatcher.Skip(RleLength);
continue;
}
ByteCallback(n, Input[n]);
n += 1;
LzMatcher.Skip(1);
if (UseRle) RleMatcher.Skip(1);
}
}