/* * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package org.openjdk.asmtools.asmutils; /** * */ public class HexUtils { /*======================================================== Hex */ private static final String hexString = "0123456789ABCDEF"; private static final char hexTable[] = hexString.toCharArray(); public static String toHex(long val, int width) { StringBuffer s = new StringBuffer(); for (int i = width - 1; i >= 0; i--) { s.append(hexTable[((int) (val >> (4 * i))) & 0xF]); } return "0x" + s.toString(); } public static String toHex(long val) { int width; for (width = 16; width > 0; width--) { if ((val >> (width - 1) * 4) != 0) { break; } } return toHex(val, width); } public static String toHex(int val) { int width; for (width = 8; width > 0; width--) { if ((val >> (width - 1) * 4) != 0) { break; } } return toHex(val, width); } }