UndefinedTag.java

// Copyright 2001, FreeHEP.
package org.freehep.util.io;

import java.io.IOException;

/**
 * Tag to hold the data for an Undefined Tag for the TaggedIn/OutputStreams. The
 * data is read in and written as the number of bytes is known.
 * 
 * @author Mark Donszelmann
 * @author Charles Loomis
 * @version $Id: src/main/java/org/freehep/util/io/UndefinedTag.java
 *          96b41b903496 2005/11/21 19:50:18 duns $
 */
public class UndefinedTag extends Tag {

	private int[] bytes;

	/**
	 * Create Undefined Tag with 0 length.
	 */
	public UndefinedTag() {
		this(DEFAULT_TAG, new int[0]);
	}

	/**
	 * Create Undefined Tag.
	 * 
	 * @param tagID
	 *            undefined tagID
	 * @param bytes
	 *            bytes that follow the undefined tag
	 */
	public UndefinedTag(int tagID, int[] bytes) {
		super(tagID, 3);
		this.bytes = bytes;
	}

	@Override
	public int getTagType() {
		return 0;
	}

	@Override
	public Tag read(int tagID, TaggedInputStream input, int len)
			throws IOException {

		int[] bytes = input.readUnsignedByte(len);
		UndefinedTag tag = new UndefinedTag(tagID, bytes);
		return tag;
	}

	@Override
	public void write(int tagID, TaggedOutputStream output) throws IOException {

		output.writeUnsignedByte(bytes);
	}

	@Override
	public String toString() {
		return ("UNDEFINED TAG: " + getTag() + " length: " + bytes.length);
	}
}