svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.utils / src / main / java / org / gvsig / tools / backup / DefaultBackupGenerator.java @ 40561
History | View | Annotate | Download (3.25 KB)
1 |
/**
|
---|---|
2 |
* gvSIG. Desktop Geographic Information System.
|
3 |
*
|
4 |
* Copyright (C) 2007-2013 gvSIG Association.
|
5 |
*
|
6 |
* This program is free software; you can redistribute it and/or
|
7 |
* modify it under the terms of the GNU General Public License
|
8 |
* as published by the Free Software Foundation; either version 3
|
9 |
* of the License, or (at your option) any later version.
|
10 |
*
|
11 |
* This program is distributed in the hope that it will be useful,
|
12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
14 |
* GNU General Public License for more details.
|
15 |
*
|
16 |
* You should have received a copy of the GNU General Public License
|
17 |
* along with this program; if not, write to the Free Software
|
18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
19 |
* MA 02110-1301, USA.
|
20 |
*
|
21 |
* For any additional information, do not hesitate to contact us
|
22 |
* at info AT gvsig.com, or visit our website www.gvsig.com.
|
23 |
*/
|
24 |
package org.gvsig.tools.backup; |
25 |
|
26 |
/* gvSIG. Geographic Information System of the Valencian Government
|
27 |
*
|
28 |
* Copyright (C) 2007-2008 Infrastructures and Transports Department
|
29 |
* of the Valencian Government (CIT)
|
30 |
*
|
31 |
* This program is free software; you can redistribute it and/or
|
32 |
* modify it under the terms of the GNU General Public License
|
33 |
* as published by the Free Software Foundation; either version 2
|
34 |
* of the License, or (at your option) any later version.
|
35 |
*
|
36 |
* This program is distributed in the hope that it will be useful,
|
37 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
38 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
39 |
* GNU General Public License for more details.
|
40 |
*
|
41 |
* You should have received a copy of the GNU General Public License
|
42 |
* along with this program; if not, write to the Free Software
|
43 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
44 |
* MA 02110-1301, USA.
|
45 |
*
|
46 |
*/
|
47 |
|
48 |
import java.io.File; |
49 |
import java.io.FileInputStream; |
50 |
import java.io.FileOutputStream; |
51 |
import java.nio.channels.FileChannel; |
52 |
|
53 |
import org.gvsig.tools.backup.exceptions.BackupException; |
54 |
|
55 |
|
56 |
/**
|
57 |
* <p>Performs a backup of a file, into another file at the same path (directory), with the file extension
|
58 |
* changed to <i>.bak</i>.</p>
|
59 |
*
|
60 |
* @author Jose Ignacio Yarza (jiyarza@opensistemas.com)
|
61 |
* @author Pablo Piqueras Bartolom? (pablo.piqueras@iver.es)
|
62 |
*/
|
63 |
public class DefaultBackupGenerator implements BackupGenerator { |
64 |
/*
|
65 |
* (non-Javadoc)
|
66 |
* @see com.iver.utiles.backup.BackupGenerator#backup(java.io.File)
|
67 |
*/
|
68 |
public void backup(File source) throws BackupException { |
69 |
try {
|
70 |
int index = source.getAbsolutePath().lastIndexOf("."); |
71 |
|
72 |
if (index == -1) |
73 |
return;
|
74 |
|
75 |
File dest = new File(source.getAbsolutePath().substring(0, index) + ".bak"); |
76 |
|
77 |
// Create channel on the source
|
78 |
FileChannel srcChannel = new FileInputStream(source).getChannel(); |
79 |
|
80 |
// Create channel on the destination
|
81 |
FileChannel dstChannel = new FileOutputStream(dest).getChannel(); |
82 |
|
83 |
// Copy file contents from source to destination
|
84 |
dstChannel.transferFrom(srcChannel, 0, srcChannel.size());
|
85 |
|
86 |
// Close the channels
|
87 |
srcChannel.close(); |
88 |
dstChannel.close(); |
89 |
} catch (Exception ex) { |
90 |
throw new BackupException(ex.getMessage(), ex, source); |
91 |
} |
92 |
} |
93 |
} |