TagAndLength.java

/*
 * Copyright (C) 2013 MILLAU Julien
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.github.devnied.emvnfccard.iso7816emv;

/*
 * Copyright 2010 sasc
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.Arrays;

/**
 * 
 * @author sasc
 */
public class TagAndLength {
	private ITag tag;
	private int length;

	public TagAndLength(final ITag tag, final int length) {
		this.tag = tag;
		this.length = length;
	}

	public ITag getTag() {
		return tag;
	}

	public int getLength() {
		return length;
	}

	public byte[] getBytes() {
		byte[] tagBytes = tag.getTagBytes();
		byte[] tagAndLengthBytes = Arrays.copyOf(tagBytes, tagBytes.length + 1);
		tagAndLengthBytes[tagAndLengthBytes.length - 1] = (byte) length;
		return tagAndLengthBytes;
	}

	@Override
	public String toString() {
		return tag.toString() + " length: " + length;
	}

}