org.argeo.util/src/org/argeo/util/FsUtils.java

   1 package org.argeo.util;
   2
   3 import java.io.IOException;
   4 import java.nio.file.FileVisitResult;
   5 import java.nio.file.Files;
   6 import java.nio.file.Path;
   7 import java.nio.file.SimpleFileVisitor;
   8 import java.nio.file.attribute.BasicFileAttributes;
   9
  10 /** Utilities around the standard Java file abstractions. */
  11 public class FsUtils {
  12         /**
  13          * Deletes this path, recursively if needed. Does nothing if the path does not
  14          * exist.
  15          */
  16         public static void delete(Path path) {
  17                 try {
  18                         if (!Files.exists(path))
  19                                 return;
  20                         Files.walkFileTree(path, new SimpleFileVisitor<Path>() {
  21                                 @Override
  22                                 public FileVisitResult postVisitDirectory(Path directory, IOException e) throws IOException {
  23                                         if (e != null)
  24                                                 throw e;
  25                                         Files.delete(directory);
  26                                         return FileVisitResult.CONTINUE;
  27                                 }
  28
  29                                 @Override
  30                                 public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
  31                                         Files.delete(file);
  32                                         return FileVisitResult.CONTINUE;
  33                                 }
  34                         });
  35                 } catch (IOException e) {
  36                         throw new RuntimeException("Cannot delete " + path, e);
  37                 }
  38         }
  39
  40         /** Singleton. */
  41         private FsUtils() {
  42         }
  43
  44 }