public static void CreateDatabase(IEnumerable <Address> ips)
{
BinaryRoot = new BinaryNode()
{
NextHop = "Root"
};
CompressedRoot = new CompressedNode()
{
NextHop = "Root"
};
MultibitRoot = new MultibitNode()
{
Stride = MultibitStride
};
foreach (var ip in ips)
{
BinaryRoot.AddChild(ip.MaskedIPv4, ip.BinaryString);
CompressedRoot.AddChild(ip.MaskedIPv4, ip.BinaryString);
MultibitRoot.AddChild(ip.MaskedIPv4, ip.BinaryString);
}
CompressedRoot.Compress();
Main.UpdateTreeViews();
}
static void Main(string[] args)
{
// Create the tries
var binaryRoot = new BinaryNode("Root");
var compressedRoot = new CompressedNode("Root");
var multibitRoot = new MultibitNode()
{
Stride = 3
};
// Generate IPs
var gen = new AddressGenerator().GenerateAddress();
var db = gen.Take(10).ToArray();
// Add children to tries
foreach (var ip in db)
{
binaryRoot.AddChild(ip.MaskedIPv4, ip.BinaryString);
compressedRoot.AddChild(ip.MaskedIPv4, ip.BinaryString);
multibitRoot.AddChild(ip.MaskedIPv4, ip.BinaryString);
}
compressedRoot.Compress();
// Perform a lookup
var tosearch = new Address("132.15.162.33/17");
Console.WriteLine($"Binary: {binaryRoot.Lookup(tosearch.BinaryString)}");
Console.WriteLine($"Compressed: {compressedRoot.Lookup(tosearch.BinaryString)}");
Console.WriteLine($"Multibit: {multibitRoot.Lookup(tosearch.BinaryString, "Root")}");
Console.ReadLine();
}
/// <inheritdoc/>
public void AddChild(string prefix, string path)
{
switch (path.Length)
{
case 0:
break;
case 1:
if (path == "0")
{
Left = new CompressedNode(prefix);
}
else
{
Right = new CompressedNode(prefix);
}
break;
default:
if (path.StartsWith("0"))
{
if (Left == null)
{
Left = new CompressedNode();
}
Left.AddChild(prefix, path.Substring(1));
}
else
{
if (Right == null)
{
Right = new CompressedNode();
}
Right.AddChild(prefix, path.Substring(1));
}
break;
}
}
public void UpdateCompressedTreeView(CompressedNode root)
{
compressedTreeView.Items.Clear();
TreeViewItem child = new TreeViewItem();
child.Header = "Root";
child.Foreground = new SolidColorBrush(Colors.OrangeRed);
child.Tag = root;
compressedTreeView.Items.Add(child);
if (root.Left != null)
{
AddCompressedChild(root.Left, child, root.Left.NextHop != "" ? $"0 ({root.Left.NextHop})" : "0");
}
if (root.Right != null)
{
AddCompressedChild(root.Right, child, root.Right.NextHop != "" ? $"1 ({root.Right.NextHop})" : "1");
}
}
public void AddCompressedChild(CompressedNode node, TreeViewItem parentItem, string name)
{
var child = new TreeViewItem();
child.Header = name;
child.Tag = node;
if (node.NextHop != "")
{
child.Foreground = new SolidColorBrush(Colors.DodgerBlue);
}
if (node.Left != null)
{
AddCompressedChild(node.Left, child, node.Left.NextHop != "" ? $"0 ({node.Left.NextHop})" : "0");
}
if (node.Right != null)
{
AddCompressedChild(node.Right, child, node.Right.NextHop != "" ? $"1 ({node.Right.NextHop})" : "1");
}
parentItem.Items.Add(child);
}
private CompressedGraph CreateCompressedGraph(IGraph graph, int[] directGraphOfSimilaNode)
{
var compressedGraph = new CompressedGraph();
for (int i = 0; i < directGraphOfSimilaNode.Length; i++)
{
var nodeId = i;
var similarNodeId = directGraphOfSimilaNode[i];
var node = graph.GetNode(nodeId);
var compressedNode = new CompressedNode
{
Id = nodeId,
};
if (similarNodeId == -1)
{
compressedNode.ExtraNodes = new SortedSet <int>(node.Neighbors);
}
else
{
var similarNode = graph.GetNode(similarNodeId);
var referenceList = GetReferenceListAndExtraNodes(node, similarNode);
var extraNodes = GetExtraNodes(node, similarNode);
compressedNode.ReferenceList = referenceList;
compressedNode.ExtraNodes = extraNodes;
compressedNode.ReferenceId = similarNodeId;
}
compressedGraph.AddNode(compressedNode);
}
return(compressedGraph);
}
/// <summary>
/// Prints the compressed tree.
/// </summary>
/// <param name="root">The root node of the tree</param>
/// <param name="topMargin">The amount of lines to leave at the top of the tree</param>
/// <param name="leftMargin">The amount of spaces to leave at the left of the tree</param>
public static void Print(this CompressedNode root, int topMargin = 2, int leftMargin = 2)
{
if (root == null)
{
return;
}
int rootTop = Console.CursorTop + topMargin;
var last = new List <NodeInfo>();
var next = root;
for (int level = 0; next != null; level++)
{
var item = new NodeInfo {
Node = next, Text = next.NextHop == "" ? $" -- ({next.Segment}) " : $" {next.NextHop} ({next.Segment}) "
};
if (level < last.Count)
{
item.StartPos = last[level].EndPos + 1;
last[level] = item;
}
else
{
item.StartPos = leftMargin;
last.Add(item);
}
if (level > 0)
{
item.Parent = last[level - 1];
if (next == item.Parent.Node.Left)
{
item.Parent.Left = item;
item.EndPos = Math.Max(item.EndPos, item.Parent.StartPos);
}
else
{
item.Parent.Right = item;
item.StartPos = Math.Max(item.StartPos, item.Parent.EndPos);
}
}
next = next.Left ?? next.Right;
for (; next == null; item = item.Parent)
{
Print(item, rootTop + 2 * level);
if (--level < 0)
{
break;
}
if (item == item.Parent.Left)
{
item.Parent.StartPos = item.EndPos;
next = item.Parent.Node.Right;
}
else
{
if (item.Parent.Left == null)
{
item.Parent.EndPos = item.StartPos;
}
else
{
item.Parent.StartPos += (item.StartPos - item.Parent.EndPos) / 2;
}
}
}
}
Console.SetCursorPosition(0, rootTop + 2 * last.Count - 1);
}