blob: 54fe06728460f53973a1b1698dd0c1a379eace04 (
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
|
/*
* Jitsi, the OpenSource Java VoIP and Instant Messaging client.
*
* Copyright @ 2015 Atlassian Pty Ltd
*
* Licensed 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 net.java.sip.communicator.util.launchutils;
import java.io.*;
import java.util.*;
/**
* In the fashion of <tt>java.io.DeleteOnExitHook</tt>, provides a way to delete
* files when <tt>Runtime.halt(int)</tt> is to be invoked.
*
* @author Lyubomir Marinov
*/
public class DeleteOnHaltHook
{
/**
* The set of files to be deleted when <tt>Runtime.halt(int)</tt> is to be
* invoked.
*/
private static Set<String> files = new LinkedHashSet<String>();
/**
* Adds a file to the set of files to be deleted when
* <tt>Runtime.halt(int)</tt> is to be invoked.
*
* @param file the name of the file to be deleted when
* <tt>Runtime.halt(int)</tt> is to be invoked
*/
public static synchronized void add(String file)
{
if (files == null)
throw new IllegalStateException("Shutdown in progress.");
else
files.add(file);
}
/**
* Deletes the files which have been registered for deletion when
* <tt>Runtime.halt(int)</tt> is to be invoked.
*/
public static void runHooks()
{
Set<String> files;
synchronized (DeleteOnHaltHook.class)
{
files = DeleteOnHaltHook.files;
DeleteOnHaltHook.files = null;
}
if (files != null)
{
List<String> toBeDeleted = new ArrayList<String>(files);
Collections.reverse(toBeDeleted);
for (String filename : toBeDeleted)
new File(filename).delete();
}
}
/** Prevents the initialization of <tt>DeleteOnHaltHook</tt> instances. */
private DeleteOnHaltHook() {}
}
|
