| /* |
| * 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.VfsUtilCore; |
| 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) { |
| //noinspection unchecked |
| VfsUtilCore.processFilesRecursively(dir, Processor.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; |
| } |
| } |