1/* 2 * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * utility class 26 */ 27 28public class TestUtility { 29 30 private static final String DIGITS = "0123456789abcdef"; 31 32 private TestUtility() { 33 34 } 35 36 public static String hexDump(byte[] bytes) { 37 38 StringBuilder buf = new StringBuilder(bytes.length * 2); 39 int i; 40 41 buf.append(" "); // four spaces 42 for (i = 0; i < bytes.length; i++) { 43 buf.append(DIGITS.charAt(bytes[i] >> 4 & 0x0f)); 44 buf.append(DIGITS.charAt(bytes[i] & 0x0f)); 45 if ((i + 1) % 32 == 0) { 46 if (i + 1 != bytes.length) { 47 buf.append("\n "); // line after four words 48 } 49 } else if ((i + 1) % 4 == 0) { 50 buf.append(' '); // space between words 51 } 52 } 53 return buf.toString(); 54 } 55 56 public static String hexDump(byte[] bytes, int index) { 57 StringBuilder buf = new StringBuilder(bytes.length * 2); 58 int i; 59 60 buf.append(" "); // four spaces 61 buf.append(DIGITS.charAt(bytes[index] >> 4 & 0x0f)); 62 buf.append(DIGITS.charAt(bytes[index] & 0x0f)); 63 return buf.toString(); 64 } 65 66 public static boolean equalsBlock(byte[] b1, byte[] b2) { 67 68 if (b1.length != b2.length) { 69 return false; 70 } 71 72 for (int i = 0; i < b1.length; i++) { 73 if (b1[i] != b2[i]) { 74 return false; 75 } 76 } 77 78 return true; 79 } 80 81 public static boolean equalsBlock(byte[] b1, byte[] b2, int len) { 82 83 for (int i = 0; i < len; i++) { 84 if (b1[i] != b2[i]) { 85 return false; 86 } 87 } 88 89 return true; 90 } 91 92} 93