-
Notifications
You must be signed in to change notification settings - Fork 17
Expand file tree
/
Copy pathTreeCopier.java
More file actions
111 lines (100 loc) · 4.26 KB
/
Copy pathTreeCopier.java
File metadata and controls
111 lines (100 loc) · 4.26 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
package rprocessing;
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted
* provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice, this list of conditions
* and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright notice, this list of
* conditions and the following disclaimer in the documentation and/or other materials provided with
* the distribution.
*
* - Neither the name of Oracle nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import static java.nio.file.FileVisitResult.CONTINUE;
import static java.nio.file.FileVisitResult.SKIP_SUBTREE;
import static java.nio.file.StandardCopyOption.COPY_ATTRIBUTES;
import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
import java.io.IOException;
import java.nio.file.FileAlreadyExistsException;
import java.nio.file.FileSystemLoopException;
import java.nio.file.FileVisitResult;
import java.nio.file.FileVisitor;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.attribute.BasicFileAttributes;
import java.nio.file.attribute.FileTime;
class TreeCopier implements FileVisitor<Path> {
private final Path source;
private final Path target;
/**
* Copy source file to target location.
*/
private static void copyFile(final Path source, final Path target) {
try {
Files.copy(source, target, COPY_ATTRIBUTES, REPLACE_EXISTING);
} catch (final IOException ioException) {
System.err.format("Unable to copy: %s: %s%n", source, ioException);
}
}
TreeCopier(final Path source, final Path target) {
this.source = source;
this.target = target;
}
@Override
public FileVisitResult preVisitDirectory(final Path dir, final BasicFileAttributes attrs) {
// before visiting entries in a directory we copy the directory
// (okay if directory already exists).
final Path newdir = target.resolve(source.relativize(dir));
try {
Files.copy(dir, newdir, COPY_ATTRIBUTES);
} catch (final FileAlreadyExistsException exception) {
// ignore
} catch (final IOException ioException) {
System.err.format("Unable to create: %s: %s%n", newdir, ioException);
return SKIP_SUBTREE;
}
return CONTINUE;
}
@Override
public FileVisitResult visitFile(final Path file, final BasicFileAttributes attrs) {
copyFile(file, target.resolve(source.relativize(file)));
return CONTINUE;
}
@Override
public FileVisitResult postVisitDirectory(final Path dir, final IOException exc) {
// fix up modification time of directory when done
if (exc == null) {
final Path newdir = target.resolve(source.relativize(dir));
try {
final FileTime time = Files.getLastModifiedTime(dir);
Files.setLastModifiedTime(newdir, time);
} catch (final IOException ioException) {
System.err.format("Unable to copy all attributes to: %s: %s%n", newdir, ioException);
}
}
return CONTINUE;
}
@Override
public FileVisitResult visitFileFailed(final Path file, final IOException exc) {
if (exc instanceof FileSystemLoopException) {
System.err.println("cycle detected: " + file);
} else {
System.err.format("Unable to copy: %s: %s%n", file, exc);
}
return CONTINUE;
}
}