IoUtil.java revision fba2635c088b01af59300e8a02611bb788ee3bff
1/* 2 * Copyright 2008 the original author or authors. 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 */ 16package org.mockftpserver.core.util; 17 18import java.io.ByteArrayOutputStream; 19import java.io.IOException; 20import java.io.InputStream; 21 22/** 23 * Contains static I/O-related utility methods. 24 * 25 * @author Chris Mair 26 * @version $Revision$ - $Date$ 27 */ 28public class IoUtil { 29 30 /** 31 * Read the contents of the InputStream and return as a byte[]. 32 * 33 * @param input - the InputStream to read 34 * @return the contents of the InputStream as a byte[] 35 * @throws AssertFailedException - if the InputStream is null 36 * @throws java.io.IOException - if an error occurs reading the bytes 37 */ 38 public static byte[] readBytes(InputStream input) throws IOException { 39 Assert.notNull(input, "input"); 40 ByteArrayOutputStream outBytes = new ByteArrayOutputStream(); 41 42 try { 43 while (true) { 44 int b = input.read(); 45 if (b == -1) { 46 break; 47 } 48 outBytes.write(b); 49 } 50 } 51 finally { 52 input.close(); 53 } 54 return outBytes.toByteArray(); 55 } 56 57 /** 58 * Private constructor to prevent instantiation. All members are static. 59 */ 60 private IoUtil() { 61 } 62 63} 64