Del all files
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HaHaWTH
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package fr.xephi.authme.util;
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import com.google.common.io.Files;
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import fr.xephi.authme.AuthMe;
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import fr.xephi.authme.ConsoleLogger;
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import fr.xephi.authme.output.ConsoleLoggerFactory;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.time.LocalDateTime;
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import java.time.format.DateTimeFormatter;
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import static java.lang.String.format;
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/**
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* File utilities.
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*/
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public final class FileUtils {
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private static final DateTimeFormatter CURRENT_DATE_STRING_FORMATTER =
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DateTimeFormatter.ofPattern("yyyyMMdd_HHmm");
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private static ConsoleLogger logger = ConsoleLoggerFactory.get(FileUtils.class);
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// Utility class
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private FileUtils() {
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}
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/**
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* Copy a resource file (from the JAR) to the given file if it doesn't exist.
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*
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* @param destinationFile The file to check and copy to (outside of JAR)
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* @param resourcePath Local path to the resource file (path to file within JAR)
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*
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* @return False if the file does not exist and could not be copied, true otherwise
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*/
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public static boolean copyFileFromResource(File destinationFile, String resourcePath) {
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if (destinationFile.exists()) {
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return true;
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} else if (!createDirectory(destinationFile.getParentFile())) {
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logger.warning("Cannot create parent directories for '" + destinationFile + "'");
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return false;
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}
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try (InputStream is = getResourceFromJar(resourcePath)) {
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if (is == null) {
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logger.warning(format("Cannot copy resource '%s' to file '%s': cannot load resource",
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resourcePath, destinationFile.getPath()));
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} else {
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java.nio.file.Files.copy(is, destinationFile.toPath());
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return true;
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}
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} catch (IOException e) {
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logger.logException(format("Cannot copy resource '%s' to file '%s':",
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resourcePath, destinationFile.getPath()), e);
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}
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return false;
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}
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/**
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* Creates the given directory.
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*
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* @param dir the directory to create
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* @return true upon success, false otherwise
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*/
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public static boolean createDirectory(File dir) {
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if (!dir.exists() && !dir.mkdirs()) {
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logger.warning("Could not create directory '" + dir + "'");
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return false;
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}
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return dir.isDirectory();
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}
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/**
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* Returns a JAR file as stream. Returns null if it doesn't exist.
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*
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* @param path the local path (starting from resources project, e.g. "config.yml" for 'resources/config.yml')
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* @return the stream if the file exists, or false otherwise
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*/
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public static InputStream getResourceFromJar(String path) {
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// ClassLoader#getResourceAsStream does not deal with the '\' path separator: replace to '/'
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final String normalizedPath = path.replace("\\", "/");
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return AuthMe.class.getClassLoader().getResourceAsStream(normalizedPath);
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}
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/**
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* Delete a given directory and all its content.
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*
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* @param directory The directory to remove
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*/
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public static void purgeDirectory(File directory) {
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if (!directory.isDirectory()) {
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return;
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}
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File[] files = directory.listFiles();
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if (files == null) {
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return;
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}
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for (File target : files) {
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if (target.isDirectory()) {
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purgeDirectory(target);
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}
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delete(target);
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}
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}
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/**
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* Delete the given file or directory and log a message if it was unsuccessful.
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* Method is null safe and does nothing when null is passed.
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*
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* @param file the file to delete
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*/
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public static void delete(File file) {
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if (file != null) {
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boolean result = file.delete();
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if (!result) {
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logger.warning("Could not delete file '" + file + "'");
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}
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}
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}
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/**
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* Creates the given file or throws an exception.
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*
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* @param file the file to create
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*/
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public static void create(File file) {
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try {
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boolean result = file.createNewFile();
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if (!result) {
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throw new IllegalStateException("Could not create file '" + file + "'");
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}
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} catch (IOException e) {
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throw new IllegalStateException("Error while creating file '" + file + "'", e);
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}
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}
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/**
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* Construct a file path from the given elements, i.e. separate the given elements by the file separator.
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*
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* @param elements The elements to create a path with
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*
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* @return The created path
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*/
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public static String makePath(String... elements) {
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return String.join(File.separator, elements);
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}
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/**
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* Creates a textual representation of the current time (including minutes), e.g. useful for
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* automatically generated backup files.
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*
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* @return string of the current time for use in file names
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*/
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public static String createCurrentTimeString() {
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return LocalDateTime.now().format(CURRENT_DATE_STRING_FORMATTER);
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}
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/**
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* Returns a path to a new file (which doesn't exist yet) with a timestamp in the name in the same
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* folder as the given file and containing the given file's filename.
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*
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* @param file the file based on which a new file path should be created
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* @return path to a file suitably named for storing a backup
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*/
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public static String createBackupFilePath(File file) {
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String filename = "backup_" + Files.getNameWithoutExtension(file.getName())
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+ "_" + createCurrentTimeString()
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+ "." + Files.getFileExtension(file.getName());
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return makePath(file.getParent(), filename);
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}
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}
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