br.com.objectos.io.Directory Maven / Gradle / Ivy

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/*
 * Copyright 2013-present Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.io;

import java.io.File;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Objects;
import java.util.stream.Stream;

/**
 * @author [email protected] (Marcio Endo)
 */
public final class Directory extends Node {

  public static final Directory JAVA_IO_TMPDIR = fromSystemProperty("java.io.tmpdir");

  public static final Directory USER_HOME = fromSystemProperty("user.home");

  private Directory(Path dir) {
    super(dir);
  }

  public static Directory at(String path) {
    File dir = new File(path);
    return at(dir);
  }

  public static Directory at(File dir) {
    dir.mkdirs();
    return new Directory(dir.toPath());
  }

  public static Directory parentOf(File child) {
    File parent = child.getParentFile();
    return new Directory(parent.toPath());
  }

  private static Directory fromSystemProperty(String propertyName) {
    String property = System.getProperty(propertyName);
    return Directory.at(property);
  }

  public void clear() throws IOException {
    stream().forEach(Node::deleteUnchecked);
  }

  @Override
  public void delete() {
    rm_rf();
  }

  public Directory dirAt(String child) {
    File dir = new File(delegate().toFile(), child);
    dir.mkdirs();
    return new Directory(dir.toPath());
  }

  public br.com.objectos.io.File fileAt(String child) {
    Objects.requireNonNull(child);
    Path path = Paths.get(delegate().toString(), child);
    return br.com.objectos.io.File.of(path);
  }

  @Override
  public boolean isDirectory() {
    return true;
  }

  public void rm_rf() {
    rm_rf0(delegate().toFile());
  }

  public Stream stream() {
    try {
      return exists()
          ? Files.walk(delegate())
              .filter(o -> !o.equals(delegate()))
              .map(Node::of)
          : Stream.empty();
    } catch (IOException e) {
      throw new UncheckedIOException(e);
    }
  }

  public String getAbsolutePath() {
    return toString();
  }

  File getParent() {
    return delegate().toFile();
  }

  private void rm_rf0(File dir) {
    File[] list = dir.listFiles();
    if (list != null) {
      for (File child : list) {
        if (child.isDirectory()) {
          rm_rf0(child);
        }

        child.delete();
      }
    }

    dir.delete();
  }

}