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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/*
* Copyright 2000-2013 JetBrains s.r.o.
*
* 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 com.intellij.dvcs.repo;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.util.Condition;
import com.intellij.openapi.util.Disposer;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.vfs.VfsUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.util.Consumer;
import com.intellij.util.Processor;
import com.intellij.util.containers.ContainerUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.io.File;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.concurrent.Callable;
/**
* @author Nadya Zabrodina
*/
public class RepositoryUtil {
private static final Logger LOGGER = Logger.getInstance(RepositoryUtil.class);
private static final int IO_RETRIES = 3; // number of retries before fail if an IOException happens during file read.
public static void assertFileExists(File file, String message) {
if (!file.exists()) {
throw new RepoStateException(message);
}
}
/**
* Loads the file content.
* Tries 3 times, then a {@link RepoStateException} is thrown.
* Content is then trimmed and line separators get converted.
*
* @param file File to read.
* @return file content.
*/
@NotNull
public static String tryLoadFile(@NotNull final File file) {
return tryOrThrow(new Callable<String>() {
@Override
public String call() throws Exception {
return StringUtil.convertLineSeparators(FileUtil.loadFile(file).trim());
}
}, file);
}
/**
* Tries to execute the given action.
* If an IOException happens, tries again up to 3 times, and then throws a {@link RepoStateException}.
* If an other exception happens, rethrows it as a {@link RepoStateException}.
* In the case of success returns the result of the task execution.
*/
public static <T> T tryOrThrow(Callable<T> actionToTry, File fileToLoad) {
IOException cause = null;
for (int i = 0; i < IO_RETRIES; i++) {
try {
return actionToTry.call();
}
catch (IOException e) {
LOGGER.info("IOException while loading " + fileToLoad, e);
cause = e;
}
catch (Exception e) { // this shouldn't happen since only IOExceptions are thrown in clients.
throw new RepoStateException("Couldn't load file " + fileToLoad, e);
}
}
throw new RepoStateException("Couldn't load file " + fileToLoad, cause);
}
public static void visitVcsDirVfs(@NotNull VirtualFile gitDir, @NotNull Collection<String> subDirs) {
gitDir.getChildren();
for (String subdir : subDirs) {
VirtualFile dir = gitDir.findFileByRelativePath(subdir);
// process recursively, because we need to visit all branches under refs/heads and refs/remotes
visitAllChildrenRecursively(dir);
}
}
public static void visitAllChildrenRecursively(@Nullable VirtualFile dir) {
if (dir == null) {
return;
}
VfsUtil.processFilesRecursively(dir, new Processor<VirtualFile>() {
@Override
public boolean process(VirtualFile virtualFile) {
return true;
}
});
}
public static class Updater implements Consumer<Object> {
private final Repository myRepository;
public Updater(Repository repository) {
myRepository = repository;
}
@Override
public void consume(Object dummy) {
if (!Disposer.isDisposed(myRepository)) {
myRepository.update();
}
}
}
public static <T extends Repository> List<T> sortRepositories(@NotNull Collection<T> repositories) {
List<T> repos = ContainerUtil.filter(repositories, new Condition<T>() {
@Override
public boolean value(T t) {
return t.getRoot().isValid();
}
});
Collections.sort(repos, new Comparator<Repository>() {
@Override
public int compare(Repository o1, Repository o2) {
return o1.getPresentableUrl().compareTo(o2.getPresentableUrl());
}
});
return repos;
}
}
|
