public static LZNT1_Literal GenerateFromLZ77Literal(LZ77Literal literal, ref int processedBytes)
{
var result = new LZNT1_Literal();
result.Literal = literal.Literal;
processedBytes++;
return(result);
}
/// <summary>
/// Encode data into LZ77 symbols.
/// </summary>
/// <param name="data">Byte array containing data to be encoded.</param>
/// <returns>Array containing LZ77 symbols.</returns>
public List <LZ77Symbol> Encode(byte[] data)
{
var hash = new LZ77HashTable();
int i = 0;
var result = new List <LZ77Symbol>();
while (i < data.Length)
{
LZ77Symbol symbol;
int location = hash.Match(data, i);
var distance = i - location;
if (distance > 0 && distance <= MaximumMatchDistance)
{
int len = 0;
int k = location;
for (int j = i; j < data.Length; j++)
{
if (len > MaximumMatchLength)
{
break;
}
if (data[k] == data[j])
{
hash.Match(data, j);
k++;
len++;
}
else
{
break;
}
}
symbol = new LZ77Match()
{
Length = len, Distance = distance
};
i += len;
}
else
{
symbol = new LZ77Literal()
{
Literal = data[i]
};
i++;
}
result.Add(symbol);
}
var eof = new LZ77EOF();
result.Add(eof);
return(result);
}
public override LZ77Symbol ParseToLZ77Symbol(ref int processedBytes)
{
var result = new LZ77Literal()
{
Literal = Literal
};
processedBytes++;
return(result);
}
