/*
* Copyright 2010-2013 the original author or authors.
*
* 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 org.springframework.cloud.stream.modules.test.gemfire.support;
import java.io.File;
import java.io.FileFilter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.springframework.util.Assert;
/**
* The FileSystemUtils class is a utility class encapsulating functionality to process file system directories
* and files collectively.
* @author John Blum
* @see java.io.File
* @see java.io.FileFilter
* @see IOUtils
* @since 1.5.0
*/
public abstract class FileSystemUtils {
public static final File JAVA_HOME = new File(System.getProperty("java.home"));
public static final File USER_HOME = new File(System.getProperty("user.home"));
public static final File WORKING_DIRECTORY = new File(System.getProperty("user.dir"));
public static boolean deleteRecursive(final File path) {
assert path != null;
boolean success = true;
if (path.isDirectory()) {
for (File file : safeListFiles(path)) {
success &= deleteRecursive(file);
}
}
return (path.delete() && success);
}
public static File getRootRelativeToWorkingDirectoryOrPath(final File path) {
File localPath = path;
if (localPath != null && localPath.isDirectory()) {
while (localPath != null && !WORKING_DIRECTORY.equals(localPath.getParentFile())) {
localPath = localPath.getParentFile();
}
}
return (localPath != null ? localPath : path);
}
public static File[] listFiles(final File directory, final FileFilter fileFilter) {
Assert.isTrue(directory != null && directory.isDirectory(), String.format(
"The File (%1$s) does not refer to a valid directory!", directory));
List<File> results = new ArrayList<File>();
for (File file : safeListFiles(directory, fileFilter)) {
if (file.isDirectory()) {
results.addAll(Arrays.asList(listFiles(file, fileFilter)));
}
else {
results.add(file);
}
}
return results.toArray(new File[results.size()]);
}
private static File[] safeListFiles(final File directory) {
return safeListFiles(directory, AllFiles.INSTANCE);
}
private static File[] safeListFiles(final File directory, final FileFilter fileFilter) {
File[] files = (directory != null ? directory.listFiles(fileFilter) : new File[0]);
return (files != null ? files : new File[0]);
}
public static final class AllFiles implements FileFilter {
public static final AllFiles INSTANCE = new AllFiles();
@Override
public boolean accept(final File pathname) {
return true;
}
}
}