org.apache.hudi.org.apache.commons.io.filefilter.CanExecuteFileFilter Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.commons.io.filefilter;
import java.io.File;
import java.io.Serializable;
import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.attribute.BasicFileAttributes;
/**
* This filter accepts {@code File}s that can be executed.
*
* Example, showing how to print out a list of the
* current directory's executable files:
*
* Using Classic IO
*
* File dir = new File(".");
* String[] files = dir.list(CanExecuteFileFilter.CAN_EXECUTE);
* for (String file : files) {
* System.out.println(file);
* }
*
*
*
* Example, showing how to print out a list of the
* current directory's non-executable files:
*
*
*
* File dir = new File(".");
* String[] files = dir.list(CanExecuteFileFilter.CANNOT_EXECUTE);
* for (int i = 0; i < files.length; i++) {
* System.out.println(files[i]);
* }
*
*
* @since 2.7
*/
public class CanExecuteFileFilter extends AbstractFileFilter implements Serializable {
/** Singleton instance of executable filter */
public static final IOFileFilter CAN_EXECUTE = new CanExecuteFileFilter();
/** Singleton instance of not executable filter */
public static final IOFileFilter CANNOT_EXECUTE = CAN_EXECUTE.negate();
private static final long serialVersionUID = 3179904805251622989L;
/**
* Restrictive constructor.
*/
protected CanExecuteFileFilter() {
// empty.
}
/**
* Checks to see if the file can be executed.
*
* @param file the File to check.
* @return {@code true} if the file can be executed, otherwise {@code false}.
*/
@Override
public boolean accept(final File file) {
return file.canExecute();
}
/**
* Checks to see if the file can be executed.
* @param file the File to check.
*
* @return {@code true} if the file can be executed, otherwise {@code false}.
* @since 2.9.0
*/
@Override
public FileVisitResult accept(final Path file, final BasicFileAttributes attributes) {
return toFileVisitResult(Files.isExecutable(file), file);
}
}