| 1 | /* |
| 2 | * $Id: DumpBytes.java,v 1.1 2005/11/30 06:58:48 hastings Exp $ |
| 3 | * |
| 4 | * (c) Copyright, Moebius Solutions, Inc., 2004 |
| 5 | * |
| 6 | * All Rights Reserved |
| 7 | * |
| 8 | * This material may be reproduced by or for the U. S. Government |
| 9 | * pursuant to the copyright license under the clause at |
| 10 | * DFARS 252.227-7014 (OCT 2001). |
| 11 | */ |
| 12 | package com.moesol.util; |
| 13 | |
| 14 | import java.io.PrintStream; |
| 15 | import java.io.PrintWriter; |
| 16 | import java.nio.ByteBuffer; |
| 17 | |
| 18 | /** |
| 19 | * Dump an array of bytes to output as hex and ascii. |
| 20 | * Since jSegue treats unsigned char as short to hold |
| 21 | * the range 0 - 255 dumpBytes also has a short[] form. |
| 22 | * |
| 23 | * @author Hastings |
| 24 | */ |
| 25 | public class DumpBytes { |
| 26 | public static void dumpBytes(PrintStream ps, byte[] b) { |
| 27 | PrintWriter pw = new PrintWriter(ps); |
| 28 | dumpBytes(pw, b); |
| 29 | pw.flush(); |
| 30 | } |
| 31 | public static void dumpBytes(PrintStream ps, short[] bytes) { |
| 32 | PrintWriter pw = new PrintWriter(ps); |
| 33 | dumpBytes(pw, bytes); |
| 34 | pw.flush(); |
| 35 | } |
| 36 | public static void dumpBytes(PrintWriter out, byte[] b) { |
| 37 | for (int i = 0; i < b.length; i += 16) { |
| 38 | dumpInt(out, i); |
| 39 | out.print(": "); |
| 40 | dumpHexRow(out, b, i); |
| 41 | } |
| 42 | } |
| 43 | public static void dumpBytes(PrintWriter out, ByteBuffer bb) { |
| 44 | for (int i = bb.position(); i < bb.limit(); i += 16) { |
| 45 | dumpInt(out, i); |
| 46 | out.print(": "); |
| 47 | dumpHexRow(out, bb, i); |
| 48 | } |
| 49 | } |
| 50 | public static void dumpBytes(PrintWriter out, short[] bytes) { |
| 51 | for (int i = 0; i < bytes.length; i += 16) { |
| 52 | dumpInt(out, i); |
| 53 | out.print(": "); |
| 54 | dumpHexRow(out, bytes, i); |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | public static void dumpHexRow(PrintWriter out, byte[] b, int current) { |
| 59 | dumpHexRow(out, ByteBuffer.wrap(b), current); |
| 60 | } |
| 61 | |
| 62 | public static void dumpHexRow(PrintWriter out, ByteBuffer bb, int current) { |
| 63 | int num_bytes = Math.min(16, bb.limit() - current); |
| 64 | |
| 65 | for (int i = 0; i < num_bytes; i++) { |
| 66 | dumpByte(out, bb.get(current + i)); |
| 67 | out.print(' '); |
| 68 | } |
| 69 | for (int i = 0; i < num_bytes; i++) { |
| 70 | if (isPrintable(bb.get(current + i))) { |
| 71 | out.print( (char) bb.get(current + i)); |
| 72 | } else { |
| 73 | out.print('.'); |
| 74 | } |
| 75 | } |
| 76 | out.println(); |
| 77 | } |
| 78 | public static void dumpHexRow(PrintWriter out, short[] bytes, int current) { |
| 79 | int num_bytes = Math.min(16, bytes.length - current); |
| 80 | |
| 81 | for (int i = 0; i < num_bytes; i++) { |
| 82 | dumpByte(out, (byte)bytes[current + i]); |
| 83 | out.print(' '); |
| 84 | } |
| 85 | for (int i = 0; i < num_bytes; i++) { |
| 86 | if (isPrintable((byte)bytes[current + i])) { |
| 87 | out.print( (char) bytes[current + i]); |
| 88 | } else { |
| 89 | out.print('.'); |
| 90 | } |
| 91 | } |
| 92 | out.println(); |
| 93 | } |
| 94 | public static boolean isPrintable(byte v) { |
| 95 | char ch = (char)(v & 0xFF); |
| 96 | return (ch >= ' ' && ch <= '~'); |
| 97 | } |
| 98 | public static void dumpByte(PrintWriter out, byte v) { |
| 99 | dumpInt(out, v & 0xFF, 2); |
| 100 | } |
| 101 | public static void dumpByte(PrintStream ps, byte v) { |
| 102 | PrintWriter pw = new PrintWriter(ps); |
| 103 | dumpByte(pw, v); |
| 104 | pw.flush(); |
| 105 | } |
| 106 | public static void dumpInt(PrintWriter out, int v) { |
| 107 | dumpInt(out, v, 4); |
| 108 | } |
| 109 | public static void dumpInt(PrintWriter out, int v, int width) { |
| 110 | String s = Integer.toHexString(v); |
| 111 | while (s.length() < width) { |
| 112 | s = "0" + s; |
| 113 | } |
| 114 | out.print(s); |
| 115 | } |
| 116 | } |