优化代码，性能暴涨

2025-01-29 14:01:11 +08:00
parent e243203535
commit 6de65562be
130 changed files with 9138 additions and 1020 deletions
@@ -0,0 +1,93 @@
+package org.kne.cloud.network.ipv6;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.Arrays;
+import java.util.Objects;
+
+public class Inet6AddressGroup implements Comparable<Inet6AddressGroup>{
+	private static final byte[][] maskTransf=new byte[129][16];
+	static {
+		for (int i = 0; i < 129; i++) {
+			for(int j=0;j<i;j++) {
+				maskTransf[i][j/8]=(byte) (((0b10000000)>>>j%8)|maskTransf[i][j/8]);
+			}
+		}
+	/*	for (int i = 0; i < maskTransf.length; i++) {
+			try {
+				System.out.println(InetAddress.getByAddress(maskTransf[i]));
+			} catch (UnknownHostException e) {
+				e.printStackTrace();
+			}
+		}*/
+	}
+	public Inet6AddressGroup(Inet6Address address) {
+		this(address, 128);
+	}
+	@Override
+	public String toString() {
+		return address.getHostAddress()+"/"+prefixLength;
+	}
+	@Override
+	public int hashCode() {
+		return Objects.hash(address, prefixLength);
+	}
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		Inet6AddressGroup other = (Inet6AddressGroup) obj;
+		return Objects.equals(address, other.address) && prefixLength == other.prefixLength;
+	}
+	public Inet6AddressGroup(Inet6Address address, int prefixLength) {
+		super();
+		this.address = address;
+		this.prefixLength = prefixLength;
+	}
+	public Inet6AddressGroup(DataInputStream in) throws IOException {
+		readFromStream(in);
+	}
+	private Inet6Address address;
+	private int  prefixLength=128;
+	public Inet6Address getAddress() {
+		return address;
+	}
+	public int getPrefixLength() {
+		return prefixLength;
+	}
+	public boolean checkMatch(Inet6Address ia) {
+		byte[]mask=maskTransf[prefixLength];
+		byte[]andj=and0(mask,ia.getAddress());
+		byte[]andm=and0(mask ,address.getAddress());
+		return Arrays.equals(andj,andm);
+	}
+	private byte[] and0(byte[] bs, byte[] address2) {
+		byte[]rez=new byte[bs.length];
+		for (int i = 0; i < rez.length; i++) {
+			rez[i]=(byte) (bs[i]&address2[i]);
+		}
+		return rez;
+	}
+	@Override
+	public int compareTo(Inet6AddressGroup o) {
+		return -Integer.compare(prefixLength, o.prefixLength);
+	}
+	public void writeToStream(DataOutputStream out) throws IOException {
+		out.write(address.getAddress());
+		out.write(prefixLength);
+	}
+	public void readFromStream(DataInputStream in) throws IOException {
+		byte[]b=new byte[16];
+		in.readFully(b);
+		address=(Inet6Address) Inet6Address.getByAddress(b);
+		prefixLength=in.read();
+	}
+}