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Utililty classes for Maverick Synergy and Maverick Legacy SSH APIs

There is a newer version: 3.1.2

/**
 * (c) 2002-2021 JADAPTIVE Limited. All Rights Reserved.
 *
 * This file is part of the Maverick Synergy Java SSH API.
 *
 * Maverick Synergy is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Maverick Synergy 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Maverick Synergy.  If not, see .
 */
/* HEADER */
package com.sshtools.common.util;

import java.io.ByteArrayOutputStream;

/**
 *
 *
 * @author $author$
 */
public class SimpleASNWriter {
  private ByteArrayOutputStream data;

  /**
   * Creates a new SimpleASNWriter object.
   */
  public SimpleASNWriter() {
    this.data = new ByteArrayOutputStream();
  }

  /**
   *
   *
   * @param b
   */
  public void writeByte(int b) {
    data.write(b);
  }

  
  public void write(byte[] b) {
	  data.write(b, 0, b.length);
  }
  
  /**
   *
   *
   * @param b
   */
  public void writeData(byte[] b) {
    writeLength(b.length);
    this.data.write(b, 0, b.length);
  }

  /**
   *
   *
   * @param length
   */
  public void writeLength(int length) {
    if (length < 0x80) {
      data.write(length);
    }
    else {
      if (length < 0x100) {
        data.write(0x81);
        data.write(length);
      }
      else if (length < 0x10000) {
        data.write(0x82);
        data.write(length >>> 8);
        data.write(length);
      }
      else if (length < 0x1000000) {
        data.write(0x83);
        data.write(length >>> 16);
        data.write(length >>> 8);
        data.write(length);
      }
      else {
        data.write(0x84);
        data.write(length >>> 24);
        data.write(length >>> 16);
        data.write(length >>> 8);
        data.write(length);
      }
    }
  }

  /**
   *
   *
   * @return
   */
  public byte[] toByteArray() {
    return data.toByteArray();
  }
}