/**
 *
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.agfa.hap.sdo.impl;


public class BytesTypeConverter extends TypeConverter<byte[]>{
	//TODO suboptimal implementation
	@Override
	public byte[] parse(String hexString) {
		byte[] bytes = new byte[hexString.length()/3];
		for (int i = 0; i < bytes.length; i++){
			String hexFor1Byte = hexString.substring(i*3, i*3+3);
			if (hexFor1Byte.startsWith("0")){ //strip zero for -
				hexFor1Byte = hexFor1Byte.substring(1);
			}
			bytes[i] = (byte) Integer.parseInt(hexFor1Byte, 16);
		}
		return bytes;
	}

	@Override
	public String toString(byte[] instance) {		
		StringBuilder sb = new StringBuilder(instance.length * 2);
		for(int x = 0 ; x < instance.length ; x++)
		{
		   String hex = Integer.toString(instance[x], 16);
		   for (int i = hex.length(); i < 3; i++){
			   sb.append("0");
		   }
		   sb.append(hex);
		}
		return sb.toString();
	}        	
}