me.bigteddy98.mcproxy.protocol.BufferUtils.java Source code

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Here is the source code for me.bigteddy98.mcproxy.protocol.BufferUtils.java

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/* 
 * MCProxy
 * Copyright (C) 2014 Sander Gielisse
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package me.bigteddy98.mcproxy.protocol;

import io.netty.buffer.ByteBuf;
import me.bigteddy98.mcproxy.ProxyLogger;

public class BufferUtils {

    public static void printBufferHex(String name, ByteBuf buf) {
        buf.markReaderIndex();
        byte[] array = new byte[buf.readableBytes()];
        buf.readBytes(array, 0, buf.readableBytes());
        ProxyLogger.debug("Buffer hex data for name " + name + " " + getHexString(array));
        buf.resetReaderIndex();
    }

    private static final char[] hex = "0123456789ABCDEF".toCharArray();

    public static String getHexString(byte[] hexArray) {
        char[] hexChars = new char[hexArray.length * 3];
        int v;
        for (int j = 0; j < hexArray.length; j++) {
            v = hexArray[j] & 0xFF;
            hexChars[j * 3] = hex[v >>> 4];
            hexChars[j * 3 + 1] = hex[v & 0x0F];
            hexChars[j * 3 + 2] = ' ';
        }
        return new String(hexChars);
    }
}