001 /*
002 * Copyright (C) 2012 eXo Platform SAS.
003 *
004 * This is free software; you can redistribute it and/or modify it
005 * under the terms of the GNU Lesser General Public License as
006 * published by the Free Software Foundation; either version 2.1 of
007 * the License, or (at your option) any later version.
008 *
009 * This software is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * You should have received a copy of the GNU Lesser General Public
015 * License along with this software; if not, write to the Free
016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018 */
019 package org.crsh.util;
020
021 import java.io.ByteArrayOutputStream;
022 import java.io.IOException;
023 import java.io.InputStream;
024 import java.io.OutputStream;
025
026 public class IO {
027
028 public static byte[] readAsBytes(InputStream in) throws IOException {
029 return read(in).toByteArray();
030 }
031
032 public static String readAsUTF8(InputStream in) {
033 try {
034 ByteArrayOutputStream baos = read(in);
035 return baos.toString("UTF-8");
036 }
037 catch (IOException e) {
038 e.printStackTrace();
039 return null;
040 }
041 }
042
043 public static void copy(InputStream in, OutputStream out) throws IOException {
044 if (in == null) {
045 throw new NullPointerException();
046 }
047 try {
048 byte[] buffer = new byte[256];
049 for (int l = in.read(buffer); l != -1; l = in.read(buffer)) {
050 out.write(buffer, 0, l);
051 }
052 }
053 finally {
054 Safe.close(in);
055 }
056 }
057
058 private static ByteArrayOutputStream read(InputStream in) throws IOException {
059 if (in == null) {
060 throw new NullPointerException();
061 }
062 ByteArrayOutputStream baos = new ByteArrayOutputStream();
063 copy(in, baos);
064 return baos;
065 }
066 }