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/* * Copyright 2010-2019 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 * * https://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.data.gemfire.test.support; import static org.springframework.data.gemfire.util.ArrayUtils.nullSafeArray; import static org.springframework.data.gemfire.util.CollectionUtils.nullSafeIterable; 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 {@link 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 org.springframework.data.gemfire.test.support.FileUtils * @see org.springframework.data.gemfire.test.support.IOUtils * @since 1.5.0 */ @SuppressWarnings("unused") public abstract class FileSystemUtils extends FileUtils { public static final File JAVA_HOME = new File(System.getProperty("java.home")); public static final File JAVA_EXE = new File(new File(JAVA_HOME, "bin"), "java"); public static final File TEMPORARY_DIRECTORY = new File(System.getProperty("java.io.tmpdir")); 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 final File[] NO_FILES = new File[0]; /* (non-Javadoc) */ public static boolean deleteRecursive(File path) { return deleteRecursive(path, AllFilesFilter.INSTANCE); } /* (non-Javadoc) */ public static boolean deleteRecursive(File path, FileFilter fileFilter) { boolean success = true; if (isDirectory(path)) { for (File file : safeListFiles(path, fileFilter)) { success &= deleteRecursive(file); } } return ((!exists(path) || path.delete()) && success); } public static boolean exists(File path) { return (path != null && path.exists()); } // returns sub-directory just below working directory public static File getRootRelativeToWorkingDirectoryOrPath(File path) { File localPath = path; if (isDirectory(localPath)) { while (localPath != null && !WORKING_DIRECTORY.equals(localPath.getParentFile())) { localPath = localPath.getParentFile(); } } return (localPath != null ? localPath : path); } /* (non-Javadoc) */ public static File[] listFiles(File directory, FileFilter fileFilter) { Assert.isTrue(isDirectory(directory), String.format("File [%s] does not refer to a valid directory", directory)); List<File> results = new ArrayList<File>(); for (File file : safeListFiles(directory, fileFilter)) { if (isDirectory(file)) { results.addAll(Arrays.asList(listFiles(file, fileFilter))); } else { results.add(file); } } return results.toArray(new File[results.size()]); } /* (non-Javadoc) */ public static File[] safeListFiles(File directory) { return safeListFiles(directory, AllFilesFilter.INSTANCE); } /* (non-Javadoc) */ public static File[] safeListFiles(File directory, FileFilter fileFilter) { FileFilter resolvedFileFilter = (fileFilter != null ? fileFilter : AllFilesFilter.INSTANCE); File[] files = (isDirectory(directory) ? directory.listFiles(resolvedFileFilter) : null); return (files != null ? files : NO_FILES); } public static class AllFilesFilter implements FileFilter { public static final AllFilesFilter INSTANCE = new AllFilesFilter(); @Override public boolean accept(File pathname) { return true; } } public static class CompositeFileFilter implements FileFilter { private final FileFilter fileFilterOne; private final FileFilter fileFilterTwo; private final LogicalOperator logicalOperator; private CompositeFileFilter(FileFilter fileFilterOne, LogicalOperator operator, FileFilter fileFilterTwo) { this.fileFilterOne = fileFilterOne; this.logicalOperator = operator; this.fileFilterTwo = fileFilterTwo; } protected static FileFilter compose(FileFilter fileFilterOne, LogicalOperator operator, FileFilter fileFilterTwo) { return (fileFilterOne == null ? fileFilterTwo : (fileFilterTwo == null ? fileFilterOne : new CompositeFileFilter(fileFilterOne, operator, fileFilterTwo))); } public static FileFilter and(FileFilter... fileFilters) { return and(Arrays.asList(nullSafeArray(fileFilters, FileFilter.class))); } public static FileFilter and(Iterable<FileFilter> fileFilters) { FileFilter current = null; for (FileFilter fileFilter : nullSafeIterable(fileFilters)) { current = compose(current, LogicalOperator.AND, fileFilter); } return current; } public static FileFilter or(FileFilter... fileFilters) { return or(Arrays.asList(nullSafeArray(fileFilters, FileFilter.class))); } public static FileFilter or(Iterable<FileFilter> fileFilters) { FileFilter current = null; for (FileFilter fileFilter : nullSafeIterable(fileFilters)) { current = compose(current, LogicalOperator.OR, fileFilter); } return current; } @Override public boolean accept(File pathname) { switch (this.logicalOperator) { case AND: return (fileFilterOne.accept(pathname) && fileFilterTwo.accept(pathname)); case OR: return (fileFilterOne.accept(pathname) || fileFilterTwo.accept(pathname)); default: throw new UnsupportedOperationException( String.format("Logical operator [%s] is unsupported", this.logicalOperator)); } } enum LogicalOperator { AND, OR; } } public static class DirectoryOnlyFilter implements FileFilter { public static final DirectoryOnlyFilter INSTANCE = new DirectoryOnlyFilter(); @Override public boolean accept(File pathname) { return isDirectory(pathname); } } public static final class FileExtensionFilter extends FileOnlyFilter { private final String fileExtension; public static FileExtensionFilter newFileExtensionFilter(String fileExtension) { return new FileExtensionFilter(fileExtension); } public FileExtensionFilter(String fileExtension) { Assert.hasText(fileExtension, String.format("File extension [%s] must be specified", fileExtension)); this.fileExtension = fileExtension; } @Override public boolean accept(File pathname) { return (super.accept(pathname) && pathname.getAbsolutePath().toLowerCase().endsWith(this.fileExtension)); } } public static class FileOnlyFilter implements FileFilter { public static final FileOnlyFilter INSTANCE = new FileOnlyFilter(); @Override public boolean accept(File pathname) { return isFile(pathname); } } public static class NegatingFileFilter implements FileFilter { private final FileFilter delegate; public static NegatingFileFilter newNegatingFileFilter(FileFilter delegate) { return new NegatingFileFilter(delegate); } public NegatingFileFilter(FileFilter delegate) { Assert.notNull(delegate, "FileFilter must not be null"); this.delegate = delegate; } @Override public boolean accept(File pathname) { return !this.delegate.accept(pathname); } } }