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 */
019package org.crsh.util;
020
021import java.io.ByteArrayOutputStream;
022import java.io.IOException;
023import java.io.InputStream;
024import java.io.OutputStream;
025
026public 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}