1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache license, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the license for the specific language governing permissions and
15 * limitations under the license.
16 */
17 package org.apache.logging.log4j.core.config.plugins.convert;
18
19 /**
20 * Converts Strings to hex. This is used in place of java.xml.bind.DataTypeConverter which is not available by
21 * default in Java 9.
22 *
23 * @Since 2.9
24 */
25 public class HexConverter {
26
27 public static byte[] parseHexBinary(final String s) {
28 final int len = s.length();
29 final byte[] data = new byte[len / 2];
30 for (int i = 0; i < len; i += 2) {
31 data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4)
32 + Character.digit(s.charAt(i+1), 16));
33 }
34 return data;
35 }
36 }