private static void PrefixCodes(HuffmanNode Node, string Route)
{
if (Node.IsLeaf())
{
CharacterTable.Add(Node.Fact, Route);
}
else
{
if (Node.LeftNode != null)
{
PrefixCodes(Node.LeftNode, Route + "0");
}
if (Node.RightNode != null)
{
PrefixCodes(Node.RightNode, Route + "1");
}
}
}
private static void PrefixCodes(HuffmanNode Node, string traversal)
{
if (Node.IsLeaf())
{
CharacterTable.Add(traversal, Node.Fact); return;
}
else
{
if (Node.LeftNode != null)
{
PrefixCodes(Node.LeftNode, traversal + "0");
}
if (Node.RightNode != null)
{
PrefixCodes(Node.RightNode, traversal + "1");
}
}
}
static void HuffmanTree(string path)
{
using var nameJumper = new StreamReader(path);
var position = nameJumper.ReadLine().Length;
nameJumper.Close();
using (var File = new FileStream(path, FileMode.Open))
{
File.Position = position + 1;
int separator1 = 0;
var buffer = new byte[BufferLenght];
string Data_Lenght1 = "";
string frequency = "";
string Datamount = "";
int final = 0;
byte bit = new byte();
using (var reader = new BinaryReader(File))
{
while (reader.BaseStream.Position != reader.BaseStream.Length)
{
buffer = reader.ReadBytes(BufferLenght);
foreach (var item in buffer)
{
if (separator1 == 0)
{
if (Convert.ToChar(item) == '|' || Convert.ToChar(item) == 'ÿ' || Convert.ToChar(item) == 'ß')
{
separator1 = 1;
if (Convert.ToChar(item) == '|')
{
Separator = '|';
}
else if (Convert.ToChar(item) == 'ÿ')
{
Separator = 'ÿ';
}
else
{
Separator = 'ß';
}
}
else
{
Data_Lenght1 += Convert.ToChar(item).ToString();
}
}
else if (separator1 == 2)
{
break;
}
else
{
if (final == 1 && Convert.ToChar(item) == Separator)
{
final = 2;
separator1 = 2;
}
else
{
final = 0;
}
if (Datamount == "")
{
Datamount = Convert.ToChar(item).ToString(); bit = item;
}
else if (Convert.ToChar(item) == Separator && final == 0)
{
FrequencyTable.Add(bit, Convert.ToInt32(frequency));
Datamount = "";
frequency = "";
final = 1;
}
else
{
frequency += Convert.ToChar(item).ToString();
}
}
}
}
}
DataLenght = Convert.ToDecimal(Data_Lenght1);
}
List <HuffmanNode> FrequencyList = new List <HuffmanNode>();
foreach (KeyValuePair <byte, int> Nodes in FrequencyTable)
{
FrequencyList.Add(new HuffmanNode(Nodes.Key, Convert.ToDecimal(Nodes.Value) / DataLenght));
}
FrequencyList = FrequencyList.OrderBy(x => x.Probability).ToList();
while (FrequencyList.Count > 1)
{
FrequencyList = FrequencyList.OrderBy(x => x.Probability).ToList();
HuffmanNode Link = LinkNodes(FrequencyList[1], FrequencyList[0]);
FrequencyList.RemoveRange(0, 2);
FrequencyList.Add(Link);
}
Root = FrequencyList[0];
}
