1 /* 2 * Copyright (C) 2013 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 package com.example.android.vault; 18 19 import android.os.ParcelFileDescriptor; 20 21 import java.io.ByteArrayOutputStream; 22 import java.io.Closeable; 23 import java.io.File; 24 import java.io.FileInputStream; 25 import java.io.FileOutputStream; 26 import java.io.IOException; 27 import java.io.InputStream; 28 import java.io.OutputStream; 29 30 public class Utils { closeQuietly(Closeable closable)31 public static void closeQuietly(Closeable closable) { 32 if (closable != null) { 33 try { 34 closable.close(); 35 } catch (IOException ignored) { 36 } 37 } 38 } 39 closeWithErrorQuietly(ParcelFileDescriptor pfd, String msg)40 public static void closeWithErrorQuietly(ParcelFileDescriptor pfd, String msg) { 41 if (pfd != null) { 42 try { 43 pfd.closeWithError(msg); 44 } catch (IOException ignored) { 45 } 46 } 47 } 48 writeFully(File file, byte[] data)49 public static void writeFully(File file, byte[] data) throws IOException { 50 final OutputStream out = new FileOutputStream(file); 51 try { 52 out.write(data); 53 } finally { 54 out.close(); 55 } 56 } 57 readFully(File file)58 public static byte[] readFully(File file) throws IOException { 59 final InputStream in = new FileInputStream(file); 60 try { 61 ByteArrayOutputStream bytes = new ByteArrayOutputStream(); 62 byte[] buffer = new byte[1024]; 63 int count; 64 while ((count = in.read(buffer)) != -1) { 65 bytes.write(buffer, 0, count); 66 } 67 return bytes.toByteArray(); 68 } finally { 69 in.close(); 70 } 71 } 72 } 73