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1
33
34 package com.internetcds.util;
35
36
37
43 public class HexDump
44 {
45 public static final String  cvsVersion = "$Id: HexDump.java,v 1.1 2006/06/23 10:39:30 sinisa Exp $";
46
47 static String byteToHexString(byte b)
48 {
49 return intToHexString(b, 2, '0');
50 }
51
52 static String intToHexString(int num, int width, char fill)
53 {
54 String result = "";
55 int i;
56
57 if (num==0)
58 {
59 result = "0";
60 width--;
61 }
62 else
63 {
64 while(num!=0 && width>0)
65 {
66 String tmp = Integer.toHexString(num & 0xf);
67 result = tmp + result;
68 num = (num>>4);
69 width--;
70 }
71 }
72 for(; width>0; width--)
73 {
74 result = fill + result;
75 }
76 return result;
77 }
78
79 public static String hexDump(byte data[])
80 {
81 return hexDump(data, data.length);
82 }
83
84
85 public static String hexDump(byte data[], int length)
86 {
87 String str;
88 int i;
89 int j;
90 final int bytesPerLine = 16;
91 String result = "";
92
93
94 for(i=0; i<length; i+=bytesPerLine)
95 {
96 result = result + intToHexString(i, 4, '0') + " ";
98
99 for(j=i; j<length && (j-i)<bytesPerLine; j++)
101 {
102 result = result + byteToHexString(data[j]) + " ";
103 }
104
105 for(; 0!=(j % bytesPerLine); j++)
107 {
108 result = result + " ";
109 }
110 result = result + " |";
111
112 for(j=i; j<length && (j-i)<bytesPerLine; j++)
114 {
115 if (((data[j] & 0xff) > 0x001f) && ((data[j] & 0xff) < 0x007f))
116 {
117 Character ch = new Character ((char) data[j]);
118 result = result + ch;
119 }
120 else
121 {
122 result = result + ".";
123 }
124 }
125 result = result + "|\n";
126 }
127 return result;
128 }
129 }
130 |
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