001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache license, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the license for the specific language governing permissions and 015 * limitations under the license. 016 */ 017package org.apache.logging.log4j.core.config.plugins.convert; 018 019/** 020 * Converts Strings to hex. This is used in place of java.xml.bind.DataTypeConverter which is not available by 021 * default in Java 9. 022 * 023 * @Since 2.9 024 */ 025public class HexConverter { 026 027 public static byte[] parseHexBinary(final String s) { 028 final int len = s.length(); 029 final byte[] data = new byte[len / 2]; 030 for (int i = 0; i < len; i += 2) { 031 data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) 032 + Character.digit(s.charAt(i+1), 16)); 033 } 034 return data; 035 } 036}