UPDATE 2.2

src/org/kne/io/VarDataInputStream.java

@@ -0,0 +1,80 @@
+package org.kne.io;
+
+import java.io.DataInputStream;
+import java.io.EOFException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.Charset;
+
+public class VarDataInputStream extends DataInputStream {
+
+	public VarDataInputStream(InputStream in) {
+		super(in);
+		
+	}
+	public byte[] readPacketVarBytes() throws IOException {
+		
+		int i;
+		try {
+		i=readVarInt();
+		}catch(Exception e) {
+			return null;
+		}
+		byte[]b=new byte[i];
+		readFully(b);
+		return b;
+	}
+	public byte[] readVarBytes() throws IOException {
+		
+		int i=readVarInt();
+		byte[]b=new byte[i];
+		readFully(b);
+		return b;
+	}
+	public String readVarUTF8() throws IOException {
+		return new String(readVarBytes(), Charset.forName("UTF-8"));
+	}
+	int cache=0;
+	public int readVarInt_addd()throws IOException {
+		cache+=readVarInt();
+		return cache;
+	}
+	public int readVarInt() throws IOException {
+		int i = 0;
+		int j = 0;
+
+		while (true) {
+			byte b0 = this.readByte();
+			i |= (b0 & 127) << j++ * 7;
+
+			if (j > 5) {
+				throw new RuntimeException("VarInt too big");
+			}
+
+			if ((b0 & 128) != 128) {
+				break;
+			}
+		}
+
+		return i;
+	}
+	public long readVarLong() throws IOException {
+		long i = 0L;
+		int j = 0;
+
+		while (true) {
+			byte b0 = this.readByte();
+			i |= (long) (b0 & 127) << j++ * 7;
+
+			if (j > 10) {
+				throw new RuntimeException("VarLong too big");
+			}
+
+			if ((b0 & 128) != 128) {
+				break;
+			}
+		}
+
+		return i;
+	}
+}

src/org/kne/io/VarDataOutputStream.java

@@ -0,0 +1,43 @@
+package org.kne.io;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.nio.charset.Charset;
+
+public class VarDataOutputStream extends DataOutputStream {
+
+	public VarDataOutputStream(OutputStream out) {
+		super(out);
+	}
+	int cache=0;
+	public void writeVarInt_add(int input)throws IOException{
+		writeVarInt (input-cache);
+		cache=input;
+	}
+	public void writeVarBytes(byte[]b) throws IOException {
+		writeVarInt(b.length);
+		write(b);
+	}
+	public void writeVarUTF8(String str) throws IOException {
+		writeVarBytes(str.getBytes(Charset.forName("UTF-8")));
+	}
+	public void writeVarInt(int input) throws IOException {
+		while ((input & -128) != 0) {
+			this.out.write(input & 127 | 128);
+			input >>>= 7;
+		}
+
+		this.out.write(input);
+	}
+
+
+	public void writeVarLong(long value) throws IOException {
+		while ((value & -128L) != 0L) {
+			this.writeByte((int) (value & 127L) | 128);
+			value >>>= 7;
+		}
+
+		this.writeByte((int) value);
+	}
+}