/*

  * Copyright 2008 the original author or authors.

  *

  * 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 org.mockftpserver.core.util;

 import java.io.ByteArrayOutputStream;

 import java.io.IOException;

 import java.io.InputStream;

 /**

  * Contains static I/O-related utility methods.

  *

  * @author Chris Mair

  * @version $Revision: 182 $ - $Date: 2008-11-30 21:37:49 -0500 (Sun, 30 Nov 2008) $

  */

 public class IoUtil {

     /**

      * Read the contents of the InputStream and return as a byte[].

      *

      * @param input - the InputStream to read

      * @return the contents of the InputStream as a byte[]

      * @throws AssertFailedException - if the InputStream is null

      * @throws java.io.IOException   - if an error occurs reading the bytes

      */

     public static byte[] readBytes(InputStream input) throws IOException {

         Assert.notNull(input, "input");

         ByteArrayOutputStream outBytes = new ByteArrayOutputStream();

         try {

             while (true) {

                 int b = input.read();

                 if (b == -1) {

                     break;

                 }

                 outBytes.write(b);

             }

         }

         finally {

             input.close();

         }

         return outBytes.toByteArray();

     }

     /**

      * Private constructor to prevent instantiation. All members are static.

      */

     private IoUtil() {

     }

 }