1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 import java.util.Collection; 18 import java.util.List; 19 20 /** 21 * Factory for filesystem commands. 22 */ 23 class Filesystem { 24 move(String source, String target)25 public void move(String source, String target) { 26 new Command("mv", source, target).execute(); 27 } 28 29 /** 30 * Moves all of the files in {@code source} to {@code target}, one at a 31 * time. Unlike {@code move}, this approach works even if the target 32 * directory is nonempty. 33 */ moveContents(String source, String target)34 public int moveContents(String source, String target) { 35 List<String> files = new Command("find", source, "-type", "f") .execute(); 36 for (String file : files) { 37 String targetFile = target + "/" + file.substring(source.length()); 38 mkdir(parent(targetFile)); 39 new Command("mv", "-i", file, targetFile).execute(); 40 } 41 return files.size(); 42 } 43 parent(String file)44 private String parent(String file) { 45 return file.substring(0, file.lastIndexOf('/')); 46 } 47 mkdir(String dir)48 public void mkdir(String dir) { 49 new Command("mkdir", "-p", dir).execute(); 50 } 51 find(String where, String name)52 public List<String> find(String where, String name) { 53 return new Command("find", where, "-name", name).execute(); 54 } 55 rm(Collection<String> files)56 public void rm(Collection<String> files) { 57 new Command.Builder().args("rm", "-r").args(files).execute(); 58 } 59 rm(String file)60 public void rm(String file) { 61 new Command("rm", "-r", file).execute(); 62 } 63 } 64