| /* |
| * 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. |
| */ |
| |
| /* |
| Extracted from commons-codec |
| */ |
| package com.coremedia.iso; |
| |
| import java.io.ByteArrayOutputStream; |
| |
| /** |
| * Converts hexadecimal Strings. |
| */ |
| public class Hex { |
| private static final char[] DIGITS = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'}; |
| |
| public static String encodeHex(byte[] data) { |
| return encodeHex(data, 0); |
| } |
| |
| public static String encodeHex(byte[] data, int group) { |
| int l = data.length; |
| char[] out = new char[(l << 1) + (group > 0 ? (l / group) : 0)]; |
| // two characters form the hex value. |
| for (int i = 0, j = 0; i < l; i++) { |
| if ((group > 0) && ((i % group) == 0) && j > 0) { |
| out[j++] = '-'; |
| } |
| |
| out[j++] = DIGITS[(0xF0 & data[i]) >>> 4]; |
| out[j++] = DIGITS[0x0F & data[i]]; |
| } |
| return new String(out); |
| } |
| |
| public static byte[] decodeHex(String hexString) { |
| ByteArrayOutputStream bas = new ByteArrayOutputStream(); |
| for (int i = 0; i < hexString.length(); i += 2) { |
| int b = Integer.parseInt(hexString.substring(i, i + 2), 16); |
| bas.write(b); |
| } |
| return bas.toByteArray(); |
| } |
| } |