1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18 package org.apache.commons.io.file;
19
20 import java.io.IOException;
21 import java.nio.file.FileVisitResult;
22 import java.nio.file.Files;
23 import java.nio.file.LinkOption;
24 import java.nio.file.Path;
25 import java.nio.file.attribute.BasicFileAttributes;
26 import java.util.Arrays;
27 import java.util.Objects;
28
29 import org.apache.commons.io.file.Counters.PathCounters;
30
31
32
33
34
35
36 public class CleaningPathVisitor extends CountingPathVisitor {
37
38
39
40
41
42
43 public static CountingPathVisitor withBigIntegerCounters() {
44 return new CleaningPathVisitor(Counters.bigIntegerPathCounters());
45 }
46
47
48
49
50
51
52 public static CountingPathVisitor withLongCounters() {
53 return new CleaningPathVisitor(Counters.longPathCounters());
54 }
55
56 private final String[] skip;
57 private final boolean overrideReadOnly;
58
59
60
61
62
63
64
65
66
67 public CleaningPathVisitor(final PathCounters pathCounter, final DeleteOption[] deleteOption, final String... skip) {
68 super(pathCounter);
69 final String[] temp = skip != null ? skip.clone() : EMPTY_STRING_ARRAY;
70 Arrays.sort(temp);
71 this.skip = temp;
72 this.overrideReadOnly = StandardDeleteOption.overrideReadOnly(deleteOption);
73 }
74
75
76
77
78
79
80
81 public CleaningPathVisitor(final PathCounters pathCounter, final String... skip) {
82 this(pathCounter, PathUtils.EMPTY_DELETE_OPTION_ARRAY, skip);
83 }
84
85
86
87
88
89
90
91 private boolean accept(final Path path) {
92 return Arrays.binarySearch(skip, PathUtils.getFileNameString(path)) < 0;
93 }
94
95 @Override
96 public boolean equals(final Object obj) {
97 if (this == obj) {
98 return true;
99 }
100 if (!super.equals(obj)) {
101 return false;
102 }
103 if (getClass() != obj.getClass()) {
104 return false;
105 }
106 final CleaningPathVisitor other = (CleaningPathVisitor) obj;
107 return overrideReadOnly == other.overrideReadOnly && Arrays.equals(skip, other.skip);
108 }
109
110 @Override
111 public int hashCode() {
112 final int prime = 31;
113 int result = super.hashCode();
114 result = prime * result + Arrays.hashCode(skip);
115 result = prime * result + Objects.hash(overrideReadOnly);
116 return result;
117 }
118
119 @Override
120 public FileVisitResult preVisitDirectory(final Path dir, final BasicFileAttributes attributes) throws IOException {
121 super.preVisitDirectory(dir, attributes);
122 return accept(dir) ? FileVisitResult.CONTINUE : FileVisitResult.SKIP_SUBTREE;
123 }
124
125 @Override
126 public FileVisitResult visitFile(final Path file, final BasicFileAttributes attributes) throws IOException {
127
128 if (accept(file) && Files.exists(file, LinkOption.NOFOLLOW_LINKS)) {
129 if (overrideReadOnly) {
130 PathUtils.setReadOnly(file, false, LinkOption.NOFOLLOW_LINKS);
131 }
132 Files.deleteIfExists(file);
133 }
134 updateFileCounters(file, attributes);
135 return FileVisitResult.CONTINUE;
136 }
137 }