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
|
/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.qpid.transport.util;
import java.nio.ByteBuffer;
import static java.lang.Math.min;
/**
* Functions
*
* @author Rafael H. Schloming
*/
public final class Functions
{
private Functions()
{
}
public static final int mod(int n, int m)
{
int r = n % m;
return r < 0 ? m + r : r;
}
public static final byte lsb(int i)
{
return (byte) (0xFF & i);
}
public static final byte lsb(long l)
{
return (byte) (0xFF & l);
}
public static final String str(ByteBuffer buf)
{
return str(buf, buf.remaining());
}
public static final String str(ByteBuffer buf, int limit)
{
return str(buf, limit,buf.position());
}
public static final String str(ByteBuffer buf, int limit,int start)
{
StringBuilder str = new StringBuilder();
str.append('"');
for (int i = start; i < min(buf.limit(), limit); i++)
{
byte c = buf.get(i);
if (c > 31 && c < 127 && c != '\\')
{
str.append((char)c);
}
else
{
str.append(String.format("\\x%02x", c));
}
}
str.append('"');
if (limit < buf.remaining())
{
str.append("...");
}
return str.toString();
}
public static final String str(byte[] bytes)
{
return str(ByteBuffer.wrap(bytes));
}
public static final String str(byte[] bytes, int limit)
{
return str(ByteBuffer.wrap(bytes), limit);
}
}
|
