blob: 4b199bafe6a7d9c0335ac0891a611f8d755c36ca (
plain)
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
|
/*
*
* 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.util;
import java.io.UnsupportedEncodingException;
/**
* Strings
*
*/
public final class Strings
{
private static final byte[] EMPTY = new byte[0];
private static final ThreadLocal<char[]> charbuf = new ThreadLocal()
{
public char[] initialValue()
{
return new char[4096];
}
};
public static final byte[] toUTF8(String str)
{
if (str == null)
{
return EMPTY;
}
else
{
final int size = str.length();
char[] chars = charbuf.get();
if (size > chars.length)
{
chars = new char[Math.max(size, 2*chars.length)];
charbuf.set(chars);
}
str.getChars(0, size, chars, 0);
final byte[] bytes = new byte[size];
for (int i = 0; i < size; i++)
{
if (chars[i] > 127)
{
try
{
return str.getBytes("UTF-8");
}
catch (UnsupportedEncodingException e)
{
throw new RuntimeException(e);
}
}
bytes[i] = (byte) chars[i];
}
return bytes;
}
}
}
|
