HexDump.java
3.13 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
package com.sitech.ismp.ice.util;
import java.lang.*;
import java.io.*;
public class
HexDump
{
private static final int ROW_BYTES = 16;
private static final int ROW_QTR1 = 3;
private static final int ROW_HALF = 7;
private static final int ROW_QTR2 = 11;
public static void
dumpHexData( PrintStream out, String title, byte[] buf, int numBytes )
{
int rows, residue, i, j;
byte[] save_buf= new byte[ ROW_BYTES+2 ];
byte[] hex_buf = new byte[ 4 ];
byte[] idx_buf = new byte[ 8 ];
byte[] hex_chars = new byte[20];
hex_chars[0] = '0';
hex_chars[1] = '1';
hex_chars[2] = '2';
hex_chars[3] = '3';
hex_chars[4] = '4';
hex_chars[5] = '5';
hex_chars[6] = '6';
hex_chars[7] = '7';
hex_chars[8] = '8';
hex_chars[9] = '9';
hex_chars[10] = 'A';
hex_chars[11] = 'B';
hex_chars[12] = 'C';
hex_chars[13] = 'D';
hex_chars[14] = 'E';
hex_chars[15] = 'F';
out.println( title + " - " + numBytes + " bytes." );
rows = numBytes >> 4;
residue = numBytes & 0x0000000F;
for ( i = 0 ; i < rows ; i++ )
{
int hexVal = (i * ROW_BYTES);
idx_buf[0] = hex_chars[((hexVal >> 12) & 15)];
idx_buf[1] = hex_chars[((hexVal >> 8) & 15)];
idx_buf[2] = hex_chars[((hexVal >> 4) & 15)];
idx_buf[3] = hex_chars[(hexVal & 15)];
String idxStr = new String( idx_buf, 0, 4 );
out.print( idxStr + ": " );
for ( j = 0 ; j < ROW_BYTES ; j++ )
{
save_buf[j] = buf[(i * ROW_BYTES) + j];
hex_buf[0] = hex_chars[(save_buf[j] >> 4) & 0x0F];
hex_buf[1] = hex_chars[save_buf[j] & 0x0F];
out.print( (char)hex_buf[0] );
out.print( (char)hex_buf[1] );
out.print( ' ' );
if ( j == ROW_QTR1 || j == ROW_HALF || j == ROW_QTR2 )
out.print( " " );
if (save_buf[j] < 0x20 || save_buf[j] > 0xD9)
save_buf[j] = '.';
}
String saveStr = new String( save_buf, 0, j );
out.println( " | " + saveStr + " |" );
}
if ( residue > 0 )
{
int hexVal = (i * ROW_BYTES);
idx_buf[0] = hex_chars[((hexVal >> 12) & 15)];
idx_buf[1] = hex_chars[((hexVal >> 8) & 15)];
idx_buf[2] = hex_chars[((hexVal >> 4) & 15)];
idx_buf[3] = hex_chars[(hexVal & 15)];
String idxStr = new String( idx_buf, 0, 4 );
out.print( idxStr + ": " );
for ( j = 0 ; j < residue ; j++ )
{
save_buf[j] = buf[(i * ROW_BYTES) + j];
hex_buf[0] = hex_chars[(save_buf[j] >> 4) & 0x0F];
hex_buf[1] = hex_chars[save_buf[j] & 0x0F];
out.print( (char)hex_buf[0] );
out.print( (char)hex_buf[1] );
out.print( ' ' );
if ( j == ROW_QTR1 || j == ROW_HALF || j == ROW_QTR2 )
out.print( " " );
if (save_buf[j] < 0x20 || save_buf[j] > 0xD9)
save_buf[j] = '.';
}
for ( /*j INHERITED*/ ; j < ROW_BYTES ; j++)
{
save_buf[j] = ' ';
out.print( " " );
if ( j == ROW_QTR1 || j == ROW_HALF || j == ROW_QTR2 )
out.print( " " );
}
String saveStr = new String( save_buf, 0, j );
out.println( " | " + saveStr + " |" );
}
}
static public void
main( String[] args )
{
byte[] data = new byte[132];
for ( int i = 0 ; i < 132 ; ++i ) data[i] = (byte)i;
HexDump.dumpHexData( System.err, "Test HexDump", data, 132 );
}
}